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ENGC Calculation M-734, Rev. 2

CALCULATION COVER SHEET PILGRIM NUCLEAR POWER STATION-Ente-y

CALC. NO. M-734 REV. 2 Responsible Discipline: SR ED RTYPE

I I Mechanical Engineering NSR 0 B4.01 Title: RHR and Core Spray Pump Suction Strainer

Debris Head Loss NPSH Evaluation Vendor Calculation Yes 0

Discipline Dept. Manager: Thomas F. White Jr. No 0

ApprovaVs/: Date; Safety Design Basis Yes CD

A'~ I No 0

Independent Reviewer: George E. O'Connor /s/ . statement Attached VL

By:. Philip D. Hadzi Ch'k'd: Patrick J. Doody Page(s) Date: Date: All /s

A. Statement of Problem Attachment 1 = I Pgs B. Summary of Results Attachment 2 = L Pgs C. Method of Solution D. Input Data and Assumptions E. Calculations I Analyses F. References G. List of Attachments

Note:

Revision I provides analysis for 75°F heat sink per License Amendment 173.

Revision 2 is based on updated LOCA debris analysis in response to NRC Bulletin 96-03.

Total Pages Sections A to G = 60 Pgs Total Pages Attachments = --?, Pgs

PDC Yes 0 PDC No. IF this calculation involves a design change, Required No EI THEN the implementing PDC must be indicated.

Safety Yes 10 SE No. IF this calculation affects the Safety Design Basis for Evaluation No C) Attach the Preliminary a system or affects station procedures with respect to a Required Evaluation Checklist safety function, THEN a Safety Evaluation is required.

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A. Statement of Problem It is necessary to evaluate the head loss due to LOCA-generated debris on the suction strainers for the RHR and Core Spray Pumps to determine whether there is adequate NPSH margin to accommodate the additional debris head loss. The quantity of debris is a conservatively postulated value for the bounding Design Basis Loss of Coolant Accident (DBA-LOCA) that displaces and transports the largest volume of fiberglass pipe insulation and other debris materials. The postulated debris head loss is evaluated by comparison with the total available NPSH margin for the RHR and Core Spray Pumps. The NPSH margin is determined based on the bounding Suppression Pool temperature profile for the DBA-LOCA. A new FSAR allowable pressure profile to be imposed on NPSH evaluations is verified by comparison with the calculated containment pressure required to provide adequate NPSH with the debris head loss.

This calculation is based on the following principal criteria:

1. The containment pressure available to provide adequate NPSH will be derived from: a. The thermal equilibrium calculation method for NPSH analysis described in the

FSAR and reviewed by the NRC under License Amendment 173. b. The initial conditions, inputs, and assumptions described in the FSAR and evaluated by the NRC under License Amendment 173. c. The DBA-LOCA accident response scenario described in the FSAR and evaluated

by the NRC under License Amendment 173.

2. The NPSH analysis shall be based on a bounding profile for suction strainer head loss due to LOCA generated debris conservatively calculated in accordance with NRC Bulletin 96-03 and Regulatory Guide 1.82, Revision 2.

3. The analysis shall specifically identify the magnitude and duration of containment positive pressure (overpressure) required to provide adequate NPSH. It is required that these updated values for containment pressure used in NPSH analysis be submitted to the NRC in an application for license amendment and that the approved values be identified in the FSAR. The Safety Evaluation referenced on the cover sheet of this calculation identifies the acceptance of the updated FSAR allowable containment pressure values.

4. To ensure that the RHR and Core Spray Pumps can perform the initial recovery of core cooling without cavitation, the original design specifications for the RHR and Core Spray systems required that at maximum flow (runout), the available NPSH shall be based on 130'F water with containment at atmospheric pressure. The Suppression Pool will reach approximately 130°F during the initial reflood following a DBA-LOCA blowdown of the reactor vessel into primary containment. The analysis shall verify the pumps can operate under these conditions without cavitation.

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5. For clean suction strainer conditions and for conditions degraded by the maximum postulated debris, the ana!ysis shall determine the following for the DBA-LOCA:

a. Available Containmennt Pressure b. NPSH Available c. NPSH Margin d. Minimum required containment pressure to provide adequate NPSH.

6. The analysis based on the DBA-LOCA shall also ensure that adequate NPSH is available for all potential design basis events for which the RHR and Core Spray Pumps are required to operate and perform the core and/or containment cooling functions.

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B. Summary of Results

The minimum containment pressure available following the DBA-LOCA with a 75°F SSW heat sink, based on the thermal equilibrium method from Calculation M-662, is given in Table 1. The total available NPSH margin for the limiting Core Spray Pump is given in Table 2 and is greater than the postulated suction strainer head loss due to LOCA-generated debris from [Ref. 1] and included in the table. The total available NPSH margin for the RHR Pumps is also greater than the postulated debris head loss following a DBA-LOCA and is less limiting than the Core Spray Pumps as shown in Table 3. These NPSH calculations are based on the Suppression Pool temperature profile for the DBA-LOCA with a 750F SSW heat sink, which has a peak pool temperature of 182.3°F. In addition, NPSH was evaluated separately at the design peak Suppression Pool temperature of 185°F and the available margin for the RHR and Core Spray Pumps is greater than the DBA-LOCA debris head loss.

The strainer head loss is based on the application of the debris following a DBA-LOCA applied to one strainer with two RHR and one Core Spray Pump operating at maximum flow for the first two hours followed by one RHR and one Core Spray Pump operating at maximum flow for the remainder. There is adequate NPSH margin to accommodate the bounding debris loading without affecting pump performance for either the RHR or Core Spray Pumps. Only one loop of RHR and Core Spray is assumed to function for the DBA-LOCA. If both loops are operating, the conditions are more favorable both for debris accumulation and Suppression Pool temperature and therefore the NPSH margin will be significantly greater.

These NPSH analyses were performed using a methodology that has been previously reviewed by the NRC as part of License Amendment 173 [Ref. 7]. The Safety Evaluation Report (SER) related to Amendment 173 (dated July 3, 1997) describes the results from a review of Calculation M-662, which is the Pilgrim design basis for available NPSH to the RHR and Core Spray Pumps. The thermal equilibrium method used in M-662 for containment pressure and NPSH available is consistent with the original Pilgrim FSAR. The current M-662 [Ref. 5] is based on the Suppression Pool temperature profile from the containment analysis using two-sigma decay heat [Ref. 8] per the requirements of Amendment 173. This calculation evaluates the effect of the new suction strainer debris head loss on RHR and Core Spray Pump NPSH.

The RHR and Core Spray Pumps are not degraded by the postulated suction strainer debris head loss since there is adequate NPSH margin available to accommodate the head loss without causing pump cavitation when the calculated containment pressure is used for the NPSH analysis. The new debris head loss nonetheless constituted a Nonconforming Condition because the allowable containment pressure that may be assumed for NPSH analysis per FSAR Section 14.5.3.1.3 did not provide sufficient NPSH margin. The FSAR allowable pressure profile that was approved by Amendment 173 does not accommodate the updated debris head loss. The basis for the previous

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FSAR allowable pressure profile was an earlier debris analysis that postulated a lower strainer head loss and, consequently, a lesser amount of containment pressure was required. This calculation provides the updated debris analysis and containment pressure requirements.

The containment pressure that may be assumed in pump NPSH evaluations will be limited to the following FSAR allowable pressure profile:

Time After Accident Containment Pressure (sec) (hour) (psig) (psia)

0 to 1,200 0.00 to 0.33 0.0 14.7 1,200 to 1,800 0.33 to 0.50 1.9 16.6 1,800 to 3,600 0.50 to 1.0 3.0 17.7 3,600 to 57,600 1.0 to 16.0 5.0 19.7

57,600 to 108,000 16.0 to 30.0 2.5 17.2 108,000 to 172,800 30.0 to 48.0 1.0 15.7 172,800 to 864,000 48.0 to 240.0 0.0 14.7

This containment pressure profile is completely enveloped by the containment pressure calculated using the conservative equilibrium method to determine the available NPSH. Containment pressure within this FSAR pressure profile provides adequate NPSH margin to accommodate the suction strainer debris head loss for the RHR and Core Spray Pumps following a DBA-LOCA.

The first time step for which positive containment pressure (overpressure) is assumed is at 1200 seconds (20 minutes). This ensures that the RHR Pumps in the LPCI mode and a Core Spray Pump can perform the initial recovery of core cooling without requiring any containment pressurization during the initial 1200 seconds for the bounding DBA-LOCA. This is consistent with the analysis reviewed for Amendment 173.

The design basis loss-of-coolant-accident (DBA-LOCA) is the reactor recirculation system line break, which results in the most rapid heatup of the Suppression Pool to its highest peak temperature. The DBA-LOCA case provides a bounding analysis with respect to NPSH. The containment heatup analysis that produces the Suppression Pool temperature profile was performed using the GE computer code SHEX for primary containment thermodynamic analysis [Ref. 8]. The containment modeling and assumptions were set to maximize the pool temperature. The DBA-LOCA pool profile is based on a singe loop of containment heat removal, the highest ultimate heat sink temperature (75°F), ANSI/ANS 5.1 two-sigma decay heat, and initial conditions for power level, operating history, containment conditions, flow rates, and heat exchanger performance that maximize pool temperature.

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The results from the DBA-LOCA NPSH analysis are illustrated in attached Figures I and 2. Figure I shows the containment pressure available and the pressure required to provide adequate NPSH to the RHR and Core Spray Pumps with a clean strainer and with the new debris head loss included. The new FSAR allowable pressure profile is also shown on Figure 1. The Core Spray Pumps are more limiting for NPSH than the RHR Pumps. Figure 2 shows, in units of feet, the corresponding total available NPSH margin with a clean strainer, the postulated debris head loss, and the margin available for the Core Spray Pump based on the new FSAR allowable pressure profile. The total available NPSH margin depicted in the figures is based on the conservative lower bounding containment pressure existing due to thermal equilibrium principles for an enclosed volume (primary containment) as described in FSAR Section 14.5.3.1.3.

As illustrated in Figures I and 2, the new FSAR allowable pressure profile provides sufficient NPSH margin to accommodate the new debris head loss. The new FSAR allowable pressure profile is equal to or less than the available containment pressure determined using the thermal equilibrium method. These NPSH calculations are based on the Suppression Pool temperature profile for the DBA-LOCA with a 75°F SSW heat sink, which has a peak pool temperature of 182.3 0F. In addition, NPSH was evaluated at the design peak Suppression Pool temperature of 185°F and the 5.0 psig limit provides sufficient margin for the RHR and Core Spray Pumps with the DBA-LOCA debris head loss at that point in time.

It is also shown on Figure 2 that the new FSAR allowable pressure profile will not, at all points in time, provide the additional two feet of NPSH margin that is allocated to uncertainty and pump In-Service Testing (IST) as described in Calculation M-662. There is a two foot or greater NPSH margin between the debris head loss profile and the margin provided by the containment pressure as determined in Calculation M-662 using the FSAR thermal equilibrium method up to and through the peak pool temperature and at all times during the first 48 hours after a DBA-LOCA. The 48 hour period of time is significant because containment positive pressure (overpressure) is credited for providing adequate NPSH up to 48 hours. The NPSH margin based on the new FSAR allowable pressure profile is intended to envelop the bounding DBA-LOCA strainer debris head loss. The two foot head loss represents additional margin provided to account for uncertainty in the calculation of containment pressurization and initial strainer conditions and it is demonstrated that this unused margin exists during the period of time that containment pressure greater than atmospheric is credited.

The suction strainer head loss caused by debris is less than or equal to the total available NPSH margin provided by the new FSAR allowable pressure profile. Also, during the period of time in the accident response that any pressure greater than atmospheric is credited (i.e., 48 hours), the total available NPSH margin based on the equilibrium method is at least two feet more than the debris head loss. This criteria is summarized as follows:

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FSAR Debris FSAR Equilibrium Method Head < Pressure Limit < NPSH Margin Loss NPSH Margin 2ft Above Debris

First 48 Hours

The DBA-LOCA includes an immediate blowdown of the reactor vessel to primary containment resulting in the most rapid initial heatup of the Suppression Pool to approximately 130°F. The subsequent transfer of heat from the reactor core to the pool is also maximized by the continuous core flooding provided by the operation of one Core Spray and two RHR Pumps at maximum flow for the first two hours. In addition, the DBA-LOCA provides the maximum generation, transport, and accumulation of debris on the suction strainer.

The assumption of three ECCS pumps operating for two hours on a common suction strainer provides the maximum debris accumulation and head loss on the strainer. That is, the accumulation of debris from the pool is essentially maximized at the two hour point and no further debris is present to accumulate on the strainer. At that point in time, it is assumed that one RHR Pump is shut off and a mode of LPCI with Heat Rejection with one RHR Pump begins and is maintained for the duration of the recovery. As shown on Figure 2, the debris head loss drops from the peak of 9.9 feet to 5.4 feet at the two hour cutoff of the second RHR Pump due to the decrease in the total flow through the common strainer. The debris head loss remains at 5.4 feet until the peak pool temperature has passed and the long term cooldown begins. The steady increase in debris head loss that begins after 8 hours is due solely to the effect of viscosity increasing as the pool temperature drops.

At approximately 73 hours after the DBA-LOCA, the containment equilibrium pressure decreases to atmospheric pressure and the NPSH margin is at its minimum point for the entire event. The pool temperature is 1320F at the point of minimum NPSH margin and atmospheric pressure. At the minimum point, there is 9.4 feet of total available NPSH margin and 7.7 feet of debris head loss. From the minimum margin point onward, the NPSH and debris head loss increase in approximately equal proportion such that there is adequate NPSH out to the final 240 hour (10 day) point at which the pool temperature is 1 12°F. Based on the data up to the 240 hour point, this trend will continue as the pool cools down to lower temperatures. After the minimum margin point at 73 hours, the containment remains at atmospheric pressure and there is adequate NPSH as the pool temperature decreases from 132°F at atmospheric pressure (i.e., without overpressure). The requirement for containment pressurization exists only for the first 48 hours after the accident, after which only atmospheric pressure may be assumed.

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Figures I and 2 show that there is adequate NPSH assuming the FSAR limiting condition of atmospheric pressure in containment at 48 hours after the accident, which occurs at a pool temperature of 142 0F. Therefore, containment pressurization is only a necessary consideration for pump NPSH when the Suppression Pool is above 142°F with one RHR and one Core Spray Pump operating and maximum debris loading.

If two RHR and one Core Spray Pump are allowed to operate up to the two hour point at water temperatures less than the 176.8°F given in Table 2, the debris head loss may be higher than 9.9 feet due solely to the increase in viscosity at lower temperatures. However, by shutting down one RHR Pump, the head loss decreases to as shown on Figure 2 from 9.9 feet to 5.4 feet at the two hour point. There is adequate NPSH with one RHR and one Core Spray Pump operating and maximum debris loading at all pool temperatures.

Calculation M-662 determined the minimum NPSH Available (NPSHA) to the RHR and Core Spray Pumps for the bounding DBA-LOCA. The equilibrium method produced more limiting results than a complex computerized analysis that used detailed models of the heat transfer mechanisms in primary containment. The DBA-LOCA and steam line break accidents were evaluated for NPSH using a computerized model of primary containment done with the GE computer code SHEX [Ref. 8]. The NPSH analysis was part of the updated containment heatup analysis using two-sigma decay heat per Amendment 173. The effects from containment leakage and passive heat sinks in the drywell, wetwell, and Suppression Pool are incorporated into the SHEX model for NPSH evaluations. The mechanistic analysis for the steam line break cases was done using containment spray as the means of transferring heat from the steam atmosphere to the Suppression Pool with only makeup water added to the reactor vessel by a Core Spray Pump. For the steam line breaks, the reactor core continuously produces steam that pressurizes the containment and the containment spray flow from the RHR Pump is required to transfer heat to the Suppression Pool.

During the long-term recirculation period for the DBA-LOCA, the water exiting the reactor vessel is always subcooled (no steam production) since the vessel is continuously flooded by both the Core Spray and RHR Pumps. Transfer of heat by subcooled liquid at relatively high flow rates, as compared to steam line break events, flushes the heat energy from the primary system faster and results in a higher pool temperature at lower containment pressure, thereby making the recirculation pipe break DBA-LOCA the most limiting event for NPSH analysis.

The DBA-LOCA analysis is based on maximizing Suppression Pool temperature while the containment atmosphere is assumed to be in thermal equilibrium with the pool. This provides the most limiting case for NPSH analysis when conservative assumptions are used for the operation of the ECCS pumps. If the assumptions are changed to maximize cooling, lower the heat sink temperature, and/or minimize decay heat, this analysis remains controlling for NPSH. Lower Suppression Pool temperatures are preferable and

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constitute a less challenging condition for accident recovery. However, there are operational considerations with respect to NPSH that may arise at lower pool temperatures.

The FSAR analysis method does not require that containment pressure be greater than the minimum value that is inherently established by the containment being an enclosed airspace in thermal equilibrium with the Suppression Pool. These assumptions are applicable for the DBA-LOCA and all other events and transients that do not include the use of containment spray for containment cooling. The use of containment sprays, when appropriate for steam line breaks, has been evaluated mechanistically, as described above, and shown to be less limiting for NPSH analysis than the DBA-LOCA. Other reactor shutdown and isolation events produce less debris, lower pool temperatures, and utilize single RHR Pump operation in torus cooling rather than the LPCI with heat rejection mode.

There are potential sets of conditions that, although they are more favorable than the severe conditions of the DBA-LOCA, may require that containment spray be controlled in response to operator observations. A small steam line break with maximized cooling and a low temperature heat sink can result in the containment atmosphere being reduced to a temperature below that of the Suppression Pool by the continuous use of containment spray. Under these conditions, the available NPSH margin will be reduced below the equilibrium value for the given pool temperature. However, if pump cavitation should occur, operators will recognize the condition and stop the use of spray thus restoring adequate NPSH. These low temperature cases are less challenging, in terms of accident mitigation, than the cases analyzed with maximized Suppression Pool temperature. It is concluded that the NPSH analysis as performed for the DBA-LOCA is conservative and bounding. The basis for this conclusion is that the NPSH margin for the DBA-LOCA is restricted by the limitations that the severe conditions impose on plant operators. That is, there are no options available except to maximize cooling with the remaining single loop of containment heat removal under the DBA-LOCA conditions. For other cases with lower pool temperatures, the NPSH margin can be improved by operator actions that would be allowed under the circumstances.

The methodology, assumptions, and results presented in this calculation have been submitted to the NRC as part of a license amendment application. The new FSAR allowable pressure profile for NPSH analysis that is verified in this calculation will be incorporated into the FSAR after NRC approval. The cover sheet for this calculation identifies the Safety Evaluation that documents the NRC approval of these methods, assumptions, and results.

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C. Method of Solution

The postulated LOCA debris head loss was taken from the Calculation M-897 [Ref. 1] analysis prepared in accordance with NUREG/CR-6224 [Ref. 2] in response to NRC Bulletin 96-03 [Ref. 3] and NRC Regulatory Guide 1.82 Revision 2 [Ref. 4]. The head loss is compared with the total available NPSH margin based on the containment pressure determined by the methodology presented in Calculation M-662 [Ref. 5]. The thermal equilibrium methodology in Calculation M-662, the containment initial conditions assumed, and the DBA-LOCA accident response scenario were evaluated by the NRC in the Safety Evaluation Report (SER) for License Amendment 173 [Ref. 7]. Lower allowable values for containment pressure were approved in License Amendment 173 based on the previous debris analysis that postulated much lower strainer head losses.

A number of variables determine the total available NPSH margin. Principally they are:

Suppression Pool water level, temperature, and density. Wetwell pressure. Vapor Pressure of the Suppression Pool water. Pump suction line head loss which is principally a function of geometry and flowrate

(includes the clean suction strainer head loss).

Available containment pressure is a function of the Suppression Pool temperature profile, the initial mass of air or nitrogen, and the containment leakage rate. The methodology in Calculation M-662 is based on the assumption that the Drywell and Wetwell atmosphere is in thermal equilibrium with the Suppression Pool resulting in containment pressurization as the pool temperature increases. The containment pressure is determined in this calculation using the same methodology as Calculation M-662 (see Section E).

The Suppression Pool temperature profile used is from the containment heatup analysis for the DBA-LOCA [Ref. 8], which is the largest recirculation line break event. The DBA-LOCA produces the Suppression Pool temperature profile used in Calculation M-662 and in this analysis to determine the most limiting NPSH requirements. The NPSH calculations are performed using the Suppression Pool temperature profile extending out 240 hours (10 days) after the accident. During the 240 hour period, the pool profile peaks (at about 6 hours) and then cools down continuously for the remaining time. The long-term containment pressure peak corresponds to the pool temperature peak, after which it steadily decreases until the pressure equals atmospheric. The point of minimum NPSH margin will always occur at the point where the containment pressure has decreased to atmospheric.

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In addition to the NPSH calculation using the Suppression Pool temperature profile, the NPSH is also evaluated at the design peak pool temperature of 185TF. Although the peak Suppression Pool temperature calculated for any event is 182.3°F from the DBA-LOCA, the current design peak pool temperature is defined as 185TF.

The suction line and clean strainer head losses were determined in Calculation M-662. The containment initial mass of air or nitrogen is the same value as is used in Calculation M-662, which was derived in Calculation M-748 [Ref. 6].

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D. Input Data and Assumptions

1. The RHR and Core Spray Pumps are operating at their maximum runout flow rates. 2. The greatest head loss occurs when 2 RHR Pumps and 1 Core Spray Pump are operating

on one suction strainer.

The following maximum pump flow rates will be used, consistent with Calculation M-662:

RHR = 5,600 gpm x 2 = 11,200 gpm Core Spray = 4,950 gpm x 1 = 4,950 gpm

Total Flow = 16,150 gpm

3. At two hours after the start of the accident, a transition is made from the two pump LPCI with Heat Rejection mode to the one pump LPCI with Heat Rejection mode to maximize the heat removal function of the RHR system. Rated heat removal from the containment is obtained using the LPCI with Heat Rejection mode by removal of one RHR pump from LPCI service and closure of the RHR heat exchanger bypass valve while maintaining maximum LPCI injection flow from the single RHR pump. One pump LPCI with Heat Rejection mode is assumed to run continuously throughout the remainder of the accident response. These operator actions are consistent with the FSAR description of the DBALOCA analysis [Ref. 9 & 10] and the applicable operating procedures [Ref. 1 I].

4. The Suppression Pool temperature profile is for the DBA-LOCA with a 75*F heat sink and the updated two-sigma (2c;) decay heat [Ref. 8] consistent with Calculation M-662.

5. Suction line losses (Hsl) and elevation head (Hz) are from Calculation M-662. 6. The initial mass of dry air or nitrogen in containment is 16,315 Ibm per [Ref. 6]. 7. For the containment pressure (Pc) calculations, free drywell volume (Vd) is 147,000 ft3

and the free air space volume in the wetwell (Vs) is 124,500 ft3. 8. The strainer head loss due to LOCA debris is from Attachments B and E to [Ref. 1]

increased by a factor of 1.072, as described in [Ref. 1], to account for interference between the debris bed and the structures in the Suppression Pool. The debris head loss profile versus time was adjusted by interpolation to match the time steps used in the NPSH calculation.

9. The minimum available margin (NPSHM) that can be assumed for LOCA debris is determined by the Design Basis LOCA Suppression Pool profile with a 75*F heat sink and at the 185*F design peak Suppression Pool temperature.

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E. Calculations / Analyses

Defimition of Terms Hz Elevation of Suppression Pool water surface above the pump centerline, ft Hsl Suction line losses, ft Hdebris Suction strainer debris head loss, ft LT Reference mass leakage rate at reference pressure PT, lbm/sec Mt Initial mass of dry air inside the Drywell and Wetwell, Ibm Mt* Mass of dry air remaining inside the Drywell and Wetwell after leakage, Ibm rgas Mass of air/nitrogen in mixture, Ibm mleak Mass leakage rate from containment, Ibm/sec mwater Mass of water vapor in mixture, Ibm NPSHA Net positive suction head available, feet NPSHM Net positive suction head margin, feet NPSHR Net positive suction head required, feet Pc Primary containment pressure, psia Pc Allow Primary containment pressure as limited by the FSAR for NPSH analysis, psia Pc DBA Primary containment pressure required to provide NPSHR w/ LOCA debris, psia Pc Req 'd Primary containment pressure required to provide NPSHR w/ clean strainer, psia Pgas Pressure of gas in a mixture of gas and water vapor, psia

PT Reference pressure for mass leakage rate LT, 45 psig or 59.7 psia Pvp Saturation vapor pressure, psia R or Rgas Specific gas constant for airlnitrogen, 53.3 ft-lbf/lbm-0 R Rwater Specific gas constant for water vapor, 85.8ft-lbf/lbm-0 R AT Length of time step, sec Tp Temperature of Suppression Pool water, *F Vs Volume offree air space in Wetwell, ft? Vd Free Drywell volume, ftY p Density of water in pool, lbmlft3

0• Relative Humidity ( Humidity Ratio, Ibm water/lbm dry air

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The following methods and equations were extracted from Calculation M-662 [Ref. 5]. The equations below are referenced by number in the attached tables.

The initial mass of dry air or nitrogen in containment is 16,315 Ibm per Calculation M-662 and M-748 [Ref. 6].

Equation I calculates containment leakage mass flow as a function of pressure relative to an assumed leakage rate of 5% mass per day at the test pressure of 45 psig:

0.5

1_(14.7

Eq. I mleak = LT 1-21 )

]_14.7) PTj

Only a portion of the mass leaked from the containment is gas since the mixture leaking from containment is a mixture of water vapor and noncondensible gas. The humidity ratio (mc) can be used to determine the amount of dry gas contained in the vapor/gas mixture. This ratio is derived from the ideal gas law since the water vapor and gas are homogeneously mixed in the containment volume (Drywell and Wetwell) and both the water vapor and gas are at the Suppression Pool temperature. Also, the containment atmosphere is assumed to be at 100% relative humidity (saturated) after the event has been initiated. Equation 2 which provides the humidity ratio based on the ratio of gas and water vapor pressure is derived from the ideal gas law as follows:

w0 mwater= Rgas Pep 53.3 Pvp mgas Rwater egas 85.8 Pgas

(0 0.622Pvp

Pgas P a=Pc-Pv Pgas c vp

P. Eq. 2 (9 = 0.622 P

Pc -PVP

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Since "mleak" from Equation 1 is a gas and water vapor mixture where:

mleak = mwater + mgas

and 0) = mwater

mgas

Solving for m~water:

mwater = C) mgas

Substituting O) Mas for Mwater in the first equation yields:

mleak = 00 mgas + mgas

Solving for mgas yields:

Eq. 3 gas -mleak rgas (co+ 1)

Equation 3 provides the mass of noncondensible gas in a mixture with total mass equal to mleak and a hurnidity ratio W0.

The noncondensible gas remaining in containment at any time after the containment isolates is the initial mass minus the mass of noncondrnsible gas that has leaked. The remaining mass (Mt*) is calculated by the following formula:

Eq. 4 Mt* = Mt - I mleak W) (co + 1)

Equation 5 is used to calculate the containment pressure at any time as the sum of the partial pressure of the remaining noncondensible gas and the vapor pressure corresponding to the Suppression Pool temperature.

Eq. 5 PC = Mt * R TP in2 + PVP Vd + Vs 14in

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NPSHA is defined by the following terms:

Eq. 6 NPSHA = (Pc - Pvp) ft + Hz - Hsl p

The term (Pc-Pvp) represents the net pressure above the vapor pressure provided by the noncondensible gas inside containment. Therefore:

Eq. 7 Pgas = (Pc- Pvp) NPSHA is calculated as follows, where Pgas is converted to feet of water:

(144T:)

Eq. 8 NPSHA = Pgas , 2) + Hz- Hsl p

The containment pressure required to provide adequate NPSH is derived using Equation 6 by letting NPSHA equal NPSHR and solving for the containment pressure Pc. When NPSHA equals NPSHR the containment pressure is by definition equal to the required containment pressure Pc Req'd.

Eq. 9 Pc Req'd = Pvp + (NPSHR- Hz + Hsl) P 2

(144 f

The NPSH margin is the difference between the containment pressure that is available and the containment pressure required.

144 in2

Eq. 10 NPSHM =(Pc- Pc Req'd) ft p

or NPSHM = NPSHA - NPSHR

The updated debris analysis [Ref. 1] determined the maximum volume of shredded fiberglass, sludge, dirt/dust, rust flakes, and paint chips generated from the bounding DBA-LOCA line break inside primary containment. This debris adds significantly to the RHR and Core Spray suction strainer head loss. The containment pressure required to

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CALM. # M-734 CHECKED BY:


SHEET 17 OF -0

provide adequate NPSH under these conditions is obtained using Equation 9 for Pc Req'd

with the additional strainer debris head loss included.

Eq. 11 Containment pressure required wI LOCA debris head loss included:

Pc DBA = Pvp + (NPSHR - Hz + Hsl + Hdebris) "

The new FSAR containment pressure limits on the amount of containment pressure that can be assumed in the NPSH analysis are included in Tables 2 and 3. The NPSH margin with containment pressure at these allowable values is calculated using Equation 10 with the allowable pressure substituted for the previously calculated equilibrium pressure.

Eq. 12 NPSH margin using FSAR allowable pressure profile:

(144in2J

NPSHM = (Pc Allow - Pc Req' d) ft p

Applying the new FSAR allowable pressure profile for NPSH analysis to the design peak pool temperature of 185"F, only 5.0 PSIG can be used. The NPSH margin for the limiting Core Spray Pump at 185"F pool temperature and 5.0 PSIG is as follows:

Elevation Head Hz = 12.5 ft

Suction Head Loss HSL = 3.00 ft

NPSH Required NPSHR = 29 ft Vapor Pressure @ 185"F Pvp = 8.3855 PSIA

Density @ 185*F p = 60.456 lbm/ft3

Allowable Pressure @ 185"F Pc = 5.0 PSIG = 19.7 PSIA

NPSHM = (Pc - Pvp) ft + Hz - Hsl - NPSHR P

•.. NPSHM @ 185"F = 7.45 ft

CAMC. # M-734 CHECKED BY:


SHEET 19 OF 60

The debris head loss during the time period from 2 to 8 hours after the DBA-LOCA, during which the peak pool temperature occurs, does not exceed 5.4 ft. Therefore, there is adequate NPSH margin at 185*F to accommodate the postulated debris without affecting Core Spray Pump performance.

For the RHR Pump, there is additional NPSH margin because the NPSHR for the RHR Pump is less than for the Core Spray Pump. Using the same methodology, the NPSH margin for the RHR Pump at 185*F pool temperature is as follows:

Elevation Head Hz = 12.5 ft

Suction Head Loss HSL = 3.20 ft NPSH Required NPSHR = 27 ft Vapor Pressure @ 185°F Pvp = 8.3855 PSIA

Density @ 185°F p = 60.456 lbm/ft3

Allowable Pressure @ 185*F Pc = 5.0 PSIG = 19.7 PSIA

.. NPSHM @ 185°F = 9.25 ft

Therefore, there is adequate NPSH margin at 185°F to accommodate the postulated debris without affecting RHR Pump performance, and the RHR Pump NPSH requirements are bounded by the Core Spray Pump.

From Table 2, the minimum total available NPSH margin for the limiting Core Spray Pump is:

NPSHM = 9.4 ft @ 132°F @ Pc = 14.7 PSIA @ 73 Hours

This minimum NPSH margin is based on a Suppression Pool temperature of 132°F, which is the highest pool temperature at which the containment pressure will decrease to 0 PSIG following a DBA-LOCA with the assumption of equilibrium conditions at the higher pool temperatures earlier in the event. The containment pressure decreases to 0 PSIG at approximately 73 hours after the DBA-LOCA due to the cooldown of the Suppression Pool and the effect from containment leakage. At that point in time (73 hours), the debris head loss is 7.7 ft. Therefore, there is adequate NPSH margin with a Suppression Pool temperature of 132°F and 0 PSIG to accommodate the postulated debris without affecting Core Spray Pump performance. As before, the RHR Pump NPSH requirements are bounded by the Core Spray Pump

CALCULATION SHEET PREPARED BY:

CALCULATION SHEET

CALC. # M-734


SHEEr OF -V -

PREPARED BY:

CHECKED BY:

0.1 1.0 10.0 100.0

Time After Accident (hours)

NPSH Availability for RHR and Core Spray Pumps After a DBA-LOCA w/Debris

Figure I

26

24

22

20

18

16

14

12

10

8

W a .4

aq "t0

Based onSuppression Pool ... . ..... . .. ... ... ... . .... .. . ' ' "i' i '*, fii4 Temperature Curve Figure 14.5-17 750F Seawater Temperature I I . Suppression Pool ..... .. . .. ... .......... Suppression Pool ' '

.. ..... .... . ...... ..1 ....... .. ..... 4 -4 " .. ........ ... .. .. .. ... ... . .... ........ em re• . . .

Containent Presure IContainment Prssr

... ........

w/ekge S

S............. .. .. .. ......... . -. • . . . .. .. . ... ............. .. " """ " -+ . + , . .•-- ... ....... ........ .... ...... . .. .L .-. . _.

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I i iIIIII • i : ! ' *

.... ......................f............. I ....... fo

......... NP M ......... .'-t''' ~"

.....

~~. .. .... ........ .... ,

SforCSHR CeanNPSHR "• •••••

. . . .. . .. ..... . .... . . . .. . .... . for N C lea N P S R• .. ........ . . .•.............., . . .. +

190

180

170

160

150

140

130

120

110

100

.00.0

CL

0l.

0 Gn

1000

PREPARED BY: R.' +

CALC. # M-734


SHEET 20 OF (00

CHECKED BY:

Based on Suppression Pool

Temperature Curve Figurel 14.5-17 750F Seawater Temperature

........... . . . ... 1 ... .. . l i i i i ! i i it

........................

.................... ........... .. .4 . .. .... ... ...... ,,

... ... ...

........ .... .. . , .. .. i

I I I : : : 1*

S......... . . .... i ....... .... i - i" i i • - '

S...... ......... . ... .. - .- -- - - ..- . "- . .... .. ......... .

.CS PUmp Margin for Deb s ............... ........... FS A Lim its

-4N

.4.

*

0.1

S..... .. ............ i. ..... .....; ......... .i .. ,,4 .Ii,

...... ............. ,•........ .. ... ...... '"l " " -t

................... ........... -- --- -... ...... -------

S....

......... .. .4

4

Debris Head Loss i .... ..

.. .. .. .. .. ....... ....

S. ....... . . ............ .. ... ' ' . ' # ' " i" . .... ....... ;.. .. . .' '' ; --• " • "

................ .. • ... --- ---. . RM R Pump Margin ..-i.. .. ..5...... ,0/o/Day Leakage i ..... . .... = -4 ..... i ..._... ..i..i .... ................ . .. . ..... " " " '

Si i i iCS PUMP nMargin . ...... .•- '......, ,,'.-:. -•- rH... ..... ..... ....... r..... ----- --

S.......... .. .......• ...... ..... V ~ S..... .....l'"• -" • "i'-- • .... ..;• . ..... i ... ..-..•.-. -

..V..t

................... . .. ............ t..

..... ..". . "

L.4

C - * C * C - * - C - C S N - i - C - C C -

1.0 10.0 100.0 1000.0

Time After Accident (hours)

NPSH Margin for RHR and Core Spray Pumps After a DBA-LOCA w/Debris

Figure 2

20

15

10I

W1

5

0

0.0

- . . .4 -.----..---.------ *...- � - I. - -. - * . - $ . - I. - I -f-- I - I - *

.. . . .i - 4 . . i .

......... .. . .. . .. . . . .. . . . . . . . , .

....... .. ...... [... . .. .! .. S. ... .. .. .... . .. . [ .. . . i .. . . S................... . ......

I Y

I

dALCULATION SHEET

i il iil

..........

........... wow

.. .......... .. .... ... ........

rT.........i

PREPARED BY: pi:1-

CALC. # M-734


SHEET 21 OF -6

CHECKED BY:

/ (•drd

Mt= 16,315Ibm Pr = 59.70 psia

Case=; 5.00 %/day TLr= 815.8Ibm/day SLT = 0.009441Ibm/sec

Table 1 - Containment Pressure Available @ 5%/Day Leakage Rate - 75°F Seawater F14.5-17 Eq. I Eq. 2 Eq. 3 Eq. 4 q.5

Time Time Tp Tp Pvp mMK Co MGAS A T Mt* PC (sec) I(hour) (*11RI (psia) Ilbm/sec) (n/a) (Ibm/sec) (sec) (lbm) (psia)

130.0 590.0 2.223 16315 15.35 312 0.09 133.7 593.7 2.453 0.00280 0.105 0.00253 312 16314 15.66 557 0.15 139.5 599.5 2.853 0.00335 0.116 0.00301 245 16313 16.19 588 0.16 140.6 600.6 2.935 0.00408 0.133 0.00360 31 16313 16.29 619 0.17 141.3 601.3 2.988 0.00420 0.137 0.00370 31 16313 16.36 656 0.18 142.0 602.0 3.041 0.00428 0.139 0.00375 37 16313 16.43 969 0.27 147.8 607.8 3.521 0.00435 0.141 0.00381 313 16312 17.04

01,133 . .. - _151.0 611.0 3.812 0.00492 0.162 0.00424 230 16311 17.40 1,200 - 0.33 151.0 611.0 3.812 0.00521 0.175 0.00444 I 16311 17.40 1,281 0.36 152.1 612.1 3.916 0.00521 0.175 0.00444 81 16311 17.53 1,594 0.44 155.3 615.3 4.235 0.00531 0.179 0.00450 313 16309 17.92 1,799 0.50 157.1 617.1 4.424 0.00557 0.193 0.00467 205 16308 18.14 1,800 ( 0.50 157.1 617.1 4.424 0.00571 0.201 0.00476 i 16308 18.14 1,906 0.53 158.0 618.0 4.520 0.00571 0.201 0.00476 106 16308 18.26 2,219 0.62 160.1 620.1 4.753 0.00578 0.205 0.00480 313 16306 18.54 2,531 0.70 162.0 622.0 4.972 0.00594 0.214 0.00489 313 16305 18.80 2,844 0.79 163.7 623.7 5.176 0.00607 0.224 0.00496 313 16303 19.04 3,156 0.88 165.4 625.4 5.387 0.00619 0.232 0.00502 313 16302 19.29

RHR/CS Calc 30-SEP-99 File = NPSH75MM.XLS Page 1 of 7

C•ALCULATION SHEET

CALCULATION SHEET

CALM. # M-734

PREPARED BY: PT•1•

CHECKED BY: 0&-/. C-


SHEET 22 OF 6Q

Table 1. Containment Pressure Available @ 5%/Day Leakage Rate - 75"F Seawater F14.5-17 PA. I Eq. 2 ... Eq. 3 Eq. 4 1 . 5

Time Time Tp Tp Pvp ntYAK 0) maAS A T Mt* PC isec) (hour) (OF) (*R) (psia) (Ibm/sec) (n/a) (lbm/sec) (sec) ilbm) (psia) 3,469 0.96 166.9 626.9 5.579 0.00631 0.241 0.00508 313 16300 19.51

03.599 I.() 167.4 627.4 5.644 0.00641 0.249 0.00513 130 16299 19.59 3.600 1.0) 167.4 627.4 5.644 0.00644 0.252 0.00514 1 16299 19.59 3,781 1.05 168.2 628.2 5.749 0.00644 0.252 0.00514 181 16298 19.71 4,094 1.14 169.4 629.4 5.9i2 0.00649 0.256 0.00517 313 16297 19.90 4,406 1.22 170.4 630.4 6.049 0.00656 0.263 0.00520 313 16295 20.05 4,719 1.31 171.3 631.3 6.175 0.00663 0.269 0.00522 313 16293 20.20 5,031 1.40 172.2 632.2 6.303 0.00668 0.274 0.Q0524 313 16292 20.34 5,344 1.48 173.0 633.0 6.420 0.00673 0.279 0.00526 313 16290 20.48 5,656 1.57 173.7 633.7 6.522 0.00678 0.284 0.00528 313 16289 20.59 5,969 1.66 174.4 634.4 6.626 0.00682 0.288 0.00530 313 16287 20.71 5,*999 1.67 174.5 634.5 6.641 0.00686 0.293 0.00531 30 16287 20.73

L 6,000 1.67 174.5 634.5 6.641 0.00687 0.293 0.00531 I 16287 20.73 6,281 1.74 175.0 635.0 6.717 0.00687 0.293 0.00531 281 16285 20.82 6,594 1.83 175.7 635.7 6.823 0.00690 0.296 0.00532 313 16284 20.94 6,906 1.92 176.2 636.2 6.901 0.00694 0.301 0.00533 313 16282 21.02 7,157 1.99 176.7 636.7 6.979 0.00696 0.304 0.00534 251 16281 21.11 7,188 2.00 176.8 636.8 6.995 0.00699 0.307 0.00535 31 16280 21.13 7.199 2.00 176.8 636.8 6.995 0.00700 0.308 0.00535 I1 16280 21.13 7,2(X) 2.0() 176.8 636.8 6.995 0.00700 0.308 0.00535 1 16280 21.13 9,033 i 2.51 178.8 638.8 7.315 0.00700 0.308 0.00535 1,833 16271 21.48 12,498 3.47 181.0 641.0 7.681 0.00710 0.321 0.00538 3,465 16252 21.88 15,848 4.40 182.0 642.0 7.850 0.00722 0.336 0.00540 3,350 16234 22.06 19,325 5.37 182.3 642.3 7.903 0.00726 0.344 0.00541 3,477 16215 22.10 22,924 6.37 182.2 642.2 7.885 0.00727 0.346 0.00540 3,599 16196 22.06

1 26,735 7.43 181.7 641.7 7.799 0.00726 0.346 0.00540 3,811 16175 21.95


CALCULATION SHEET

CALC. # M-734


SHEET 23 OF 6O

PREPARED BY: (>

CHECKED BY:

Table 1 - Containment Pressure Available @ 5%/Da r Leakage Rate - 75TF Seawater 171!4.5.17 Eq Iq q.3E.

Time Time Tp Tp PVp mA (0 mofAS A T Mt* PC (sec) (hour) (OF) (OR) (psia) ,Ibm/sec) (n/a) (Ilbm/sec) k(ecbm) (pia)

30,495 8.47 181.0 641.0 7.681 0.00723 0.343 0.00539 3,760 16155 21.80 34,328 1 9.54 180.1 640.1 7.528 0.00719 0.338 0.00537 3,834 16134 21.61 38,118 ; 10.59 179.0 639.0 7.348 0.00714 0.333 0.00536 3,790 16114 21.39 42,011 1 11.67 177.7 637.7 7.137 0.00708 0.326 0.00534 3,892 16093 21.13 45,918 12.75 176.3 636.3 6.916 0.00700 0.317 0.00531 3,907 16072 20.86 49,869 13.85 174.8 634.8 6.687 0.00691 0.309 0.00528 3,952 16051 20.58 53,881 14.97 173.3 633.3 6.463 0.00682 0.299 0.00525 4,012 16030 20.30 57.599 16.00 171.9 631.9 6.260 0.00672 0.290 0.00521 3,718 16011 20.05 57.600 i 16.00 171.9 631.9 6.260 0.00663 0.282 0.00517 1 16011 20.05

'_57,880 16.08 171.8 631.8 6.246 0.00663 0.282 0.00517 280 16010 20.04 61,998 17.22 170.3 630.3 6.035 0.00662 0.282 0.00516 4,118 15988 19.77 66,179 18.38 168.7 628.7 5.817 0.00652 0.273 0.00512 4,181 15967 19.50 70,369 19.55 167.2 627.2 5.618 0.00640 0.264 0.00506 4,191 15946 19.25 74,594 20.72 165.7 625.7 5.425 0.00629 0.256 0.00501 4,225 15925 19.01 78,915 21.92 164.2 624.2 5.237 0.00618 0.248 0.00495 4,321 15903 18.77 83,272 23.13 162.8 622.8 5.068 0.00606 0.241 0.00488 4,357 15882 18.55 86,399 24.00 161.8 621.8 4.949 0.00594 0.234 0.00482 3,127 15867 18.40 86,4(X) 24.00 161.8 621.8 4.949 0.00586 0.229 0.00477 I 15867 18.40 87,590 24.33 161.4 621.4 4.903 0.00586 0.229 0.00477 1,190 15861 18.34 91,959 25.54 160.0 620.0 4.741 0.00582 0.227 0.00475 4,369 15840 18.13 96,315 26.75 158.7 618.7 4.597 0.00570 0.220 0.00467 4,355 15820 17.94

i 100,723 27.98 157.5 617.5 4.466 0.00558 0.214 0.00460 4,409 15800 17.77 105,128 29.20 156.3 616.3 4.339 0.00547 0.209 0.00453 4,405 15780 17.60 107,999 30.00 155.5 615.5 4.256 0.00535 0.204 0.00445 2,871 15767 17.49 108.000 30.00 155.5 615.5 4.256 0.00528 0.200 0.00440 1 15767 17.49 109,611 i 30.45 155.1 615.1 4.215 0.00528 0.200 0.00440 1,611 15760 17.43


CALCULATION SHEET

CALC. # M-734

PREPARED BY: e'JlF1CHECKED BY:

7Z7


SHEET If- OF ý0

Table 1 - Containment Pressure Available @ 5%/Day Leakage Rate - 75°F Seawater F14.5-17 _ I Eq.2 E .3 E4 Eq.5

Mme Time Tp Tp Pvp mMK 0) mau AT Mt* PC (sec) L hour ° (pOia) (!bm/sec) (n/a) !bm/sec) (sec) Ibm) (pia)

114,124 31.70 154.0 614.0 4.103 0.00523 0.198 0.00437 4,512 15740 17.28 118,662 32.96 153.0 613.0 4.005 0.00512 0.194 0.00429 4,539 15721 17.14 123,306 34.25 151.9 611.9 3.897 0.00501 0.190 0.00421 4,644 15701 17.00 127,955 35.54 151.0 611.0 3.812 0.00489 0.185 0.00413 4,649 15682 16.88

L 132,637 36.84 150.0 610.0 3.718 0.00478 0.182 0.00405 4,682 15663 16.74 137,298 38.14 149.0 609.0 3.628 0.00466 0.178 0.00396 4,662 15645 16.62 141,980 39.44 148.1 608.1 3.547 0.00454 0.174 0.00387 4,682 15627 16.50 143,999 40.0) 147.7 607.7 3.512 0.00443 0.170 0.00378 2,019 15619 16.45 I 144.000 1 40.00 147.7 607.7 3.512 0.00437 0.169 0.00374 1 15619 16.45 146,749 1 40.76 147.1 607.1 3.460 0.00437 0.169 0.00374 2,749 15609 16.38 1 51,545 42.10 146.2 606.2 3.383 0.00430 0.167 0.00368 4,796 15591 16.27 156,333 43.43 145.3 605.3 3.307 0.00417 0.163 0.00359 4,789 15574 16.16 161,157 44.77 144.5 604.5 3.241 0.00405 0.160 0.00349 4,823 15557 16.06 165,970 46.10 143.7 603.7 3.176 0.00393 0.157 0.00339 4,813 15541 15.97 170,814 47.45 142.9 602.9 3.112 0.00380 0.154 0.00329 4,844 15525 15.87 172,799 48A.0) 142.6 602.6 3.089 0.00367 0.152 0.00319 1,985 15518 15.84 172.800( 48.0() 142.6 602.6 3.089 0.00363 0.151 0.00315 I 15518 15.84 176,400 49.00 142.2 602.2 3.054 0.00363 0.151 0.00315 3,600 15507 15.78 180,000 50.00 141.7 601.7 3.020 0.00355 0.149 0.00309 3,600 15496 15.73 183,600 51.00 141.3 601.3 2.987 0.00347 0.148 0.00302 3,600 15485 15.68 187,200 52.00 140.8 600.8 2.954 0.00339 0.146 0.00296 3,600 15474 15.63 190,800 53.00 140.4 600.4 2.921 0.00331 0.145 0.00289 3,600 15464 15.58 194,400 I 54.00 140.0 600.0 2.887 0.00323 0.144 0.00282 3,600 15454 15.53 198,000 55.00 139.5 599.5 2.856 0.00314 0.142 0.00275 3,600 15444 15.48 201,600 56.00 139.1 599.1 2.824 0.00305 0.141 0.00267 3,600 15434 15.43 205,200 57.00 138.7 598.7 2.792 0.00296 0.139 0.00260 3,600 15425 15.38


6ALCULATION SHEET

CALC. # M-734

PREPARED BY: •x•"

CHECKED BY:


SHEET 25' OF 6(

Table 1 - Containment Pressure Available @ 5%/Day Leakage Rate - 75°F SeawaterF14.5-17 Eq. I Eq. 2 Eq. 3 -FA. 4 Eq. 5

Time Time Tp Tp Pvp mZK 0D mAS A T Mt* Pc (Sec) (hour) (OF) (OR ) psia ( (Ibmtsec) (nfa) Ilbm/sec) (l (bm) (psia) 208,800 58.00 138.2 598.2 2.760 0.00287 0.138 0.00252 3,600 15416 15.33

212,400 i 59.00 137.8 597.8 2.729 0.00277 0.137 0.00244 3,600 15407 15.29 216,000 60.00 137.3 597.3 2.699 0.00267 0.135 0.00235 3,600 15399 15.24 219,600 61.00 136.9 596.9 2.668 0.00257 0.134 0.00226 3,600 15390 15.19 223,200 62.00 136.5 596.5 2.638 0.00246 0.133 0.00217 3,600 15383 15.15 226,800 63.00 136.0 596.0 2.607 0.00235 0.131 0.00208 3,600 15375 15.10 230,400 64.00 135.6 595.6 2.578 0.00223 0.130 0.00197 3,600 15368 15.06 234,000 65.00 135.2 595.2 2.549 0.00211 0.129 0.00187 3,600 15361 15.01 237,600 66.00 134.7 594.7 2.520 0.00198 0.127 0.00176 3,600 15355 14.97 241,200 67.00 134.3 594.3 2.491 0.00184 0.126 0.00163 3,600 15349 14.93 244,800 68.00 133.8 593.8 2.462 0.00169 0.125 0.00150 3,600 15344 14.88 248,400 69.00 133.4 593.4 2.434 0.00153 0.123 0.00136 3,600 15339 14.84 252,000 70.00 133.0 593.0 2.407 0.00135 0.122 0.00120 3,600 15334 14.80 255,600 i 71.00 132.5 592.5 2.379 0.00115 0.121 0.00102 3,600 15331 14.76 259,200 72.00 132.1 592.1 2.351 0.00090 0.119 0.00080 3,600 15328 14.72

1 2O2,80U 73.00 266,400i 74.00

131.9 591.9 2.337 0.000551� I + 4-

131.7 591.7 2.324 0.000240.118

I ..... ....... ... .v v~ v i •w v .. ,.p ,s~• -'T.fIV

270,000 75.00 131.5 591.5 2.311 0.00000 0.117 0.00000 3,600 15325 14.70 1 273,600 76.00 131.2 591.2 2.298 0.00000 0.116 0.00000 3,600 15325 14.70

277,200 77.00 131.0 591.0 2.285 0.00000 0.115 0.00000 3,600 15325 14.70 280,800 78.00 130.8 590.8 2.272 0.00000 0.114 0.00000 3,600 15325 14.70 _284,400 79.00 130.6 590.6 2.258 0.00000 0.114 0.00000 3,600 15325 14.70 288,000 80.00 130.4 590.4 2.245 0.00000 0.113 0.00000 3,600 15325 14.70 291,6001 81.00 130.2 590.2 2.232 0.00000 0.112 0.00000 3,600 15325 14.70 295,200 1 82.00 129.9 589.9 2.219 0.00000 0.111 0.00000 3,600 15325 14.70 298,800 183.00 29.7 589.7 2.207 0.00000 0.111 0.00000 3,600 15325 14.70

0.000493,600 15326 1 1- 4. 14.70


O.IIR

3,600 15326 14.70{) Nt)N'• I I•lq• IA •N

CALCULATION SHEET

CALC. # M-734


SHEET 2

PREPARED BY: & 4'

CHECKED BY:

OF 6O

Table 1 - Containment Pressure Available @ 5%/Day Leakage Rate - 75°F Seawater F14.5-17 Eq. I Eq. 2 Eq. 3 Eq. 4 Eq. 5

Time Time Tp Tp Pvp muEA 0) rA A T Mt* PC (sec) I hour) (F (l*RI) (psia) (Ibmlsec) (n/a) (Ibm/sec) Sec) (psia)

302,400 84.00 129.5 589.5 2.194 0.00000 0.110 0.00000 3,600 15325 14.70

306,000 i 85.00 129.3 589.3 2.181 0.00000 0.109 0.00000 3,600 15325 14.70 309,600 86.00 129.1 589.1 2.169 0.00000 0.108 0.00000 3,600 15325 14.70 313,200 87.00 128.9 588.9 2.156 0.00000 0.108 0.00000 3,600 15325 14.70 316,800 i 88.00 128.6 588.6 2.144 0.00000 0.107 0.00000 3,600 15325 14.70 320,400 89.00 128.4 588.4 2.131 0.00000 0.106 0.00000 3,600 15325 14.70 324,000 90.00 128.2 588.2 2.118 0.00000 0.105 0.00000 3,600 15325 14.70 327,600 91.00 128.0 588.0 2.106 0.00000 0.105 0.00000 3,600 15325 14.70 331,200 92.00 127.8 587.8 2.094 0.00000 0.104 0.00000 3,600 15325 14.70 334,800 93.00 127.6 587.6 2.082 0.00000 0.103 0.00000 3,600 15325 14.70 338,400 94.00 127.3 587.3 2.070 0.00000 0.103 0.00000 3,600 15325 14.70 342,000 95.00 127.1 587.1 2.058 0.00000 0.102 0.00000 3,600 15325 14.70 345,600 96.00 126.9 586.9 2.046 0.00000 0.101 0.00000 3,600 15325 14.70 349,200 97.00 126.7 586.7 2.036 0.00000 0.101 0.00000 3,600 15325 14.70 352,800 98.00 126.6 586.6 2.027 0.00000 0.100 0.00000 3,600 15325 14.70 356,400 99.00 126.4 586.4 2.017 0.00000 0.099 0.00000 3,600 15325 14.70 360,000 100.00 126.2 586.2 2.008 0.00000 0.099 0.00000 3,600 15325 14.70 363,600 101.00 126.0 586.0 1.998 0.00000 0.098 0.00000 3,600 15325 14.70 367,200 102.00 125.9 585.9 1.989 0.00000 0.098 0.00000 3,600 15325 14.70 370,800 103.00 125.7 585.7 1.980 0.00000 0.097 0.00000 3,600 15325 14.70 374,400 104.00 125.5 585.5 1.971 0.00000 0.097 0.00000 3,600 15325 14.70 378,000 105.00 125.4 585.4 1.962 0.00000 0.096 0.00000 3,600 15325 14.70 381,600 106.00 125.2 585.2 1.953 0.00000 0.096 0.00000 3,600 15325 14.70 385,200 107.00 125.0 585.0 1.944 0.00000 0.095 0.00000 3,600 15325 14.70 388,800 108.00 124.9 584.9 1.935 0.00000 0.095 0.00000 3,600 15325 14.70 392,400 109.00 124.7 584.7 1.926 0.00000 0.094 0.00000 3,600 15325 14.70


CALCULATION SHEET

CALC. # M-734

PREPARED BY: P_9 *

CHECKED BY: __ _ _ _ _

REV. 2 DATE 30-SEP-"9

SHEET 27 OF 6O

Table 1 - Containment Pressure Available @ 5%/Day Leakatee Rate - 75°1F Seawnte-F14.5-17 [Eq. I Eq. 2 Eq. 3 Eq. 4 Eq. 5

Time Time Tp Tp Pvp mK (0 moA0 A T Mt* PC (sec) (hour) (OF) (OR) (pia ,, (lbDmsec) Wa) (ibm"sec (sec) (Ibm) (psia)

396,000 I 110.00 124.5 584.5 1.917 0.00000 0.094 0.00000 3,600 15325 14.70 399,600 111.00 124.3 584.3 1.908 0.00000 0.093 0.00000 3,600 15325 14.70 403,200 I 112.00 124.2 584.2 1.899 0.00000 0.093 0.00000 3,600 15325 14.70 406,800 113.00 124.0 584.0 1.890 0.00000 0.092 0.00000 3,600 15325 14.70 410,400 114.00 123.8 583.8 1.881 0.00000 0.092 0.00000 3,600 15325 14.70 414,000 i 115.00 123.7 583.7 1.873 0.00000 0.091 0.00000 3,600 15325 14.70 417,600 116.00 123.5 583.5 1.864 0.00000 0.091 0.00000 3,600 15325 14.70 421,200 117.00 123.3 583.3 1.855 0.00000 0.090 0.00000 3,600 15325 14.70 424,800 118.00 123.1 583.1 1.847 0.00000 0.090 0.00000 3,600 15325 14.70 428,400 119.00 123.0 583.0 1.838 0.00000 0.089 0.00000 3,600 15325 14.70 432,000 120.00 122.8 582.8 1.830 0.00000 0.089 0.00000 3,600 15325 14.70 518,400 144.00 120.2 580.2 1.702 0.00000 0.088 0.00000 86,400 15325 14.70 604,800 168.00 118.2 578.2 1.610 0.00000 0.081 0.00000 86,400 15325 14.70 691,200 192.00 116.2 576.2 1.522 0.00000 0.077 0.00000 86,400 15325 14.70 777,600 216.00 114.3 574.3 1.442 0.00000 0.072 0.00000 86,400 15325 14.70A 0.,UUU : z4U.UU I IZi 1 3(2 I0.00000 0.068

0.00 640 15325 17


0"Y/2.3 I 0.00000 86,400 15325 14.70

CALCULATION SHEET

CALC. # M-734


SHEET ZB OF ýQ

PREPARED BY: PH"

CHECKED BY:

Table 2 Core Spray Pump with 5%/Day Leakage Rate - 75*F Seawater F14.5-17 Lookup Lookup Eq. 5 -q. 7 Eq. 8 Eq. 9 Eq. 10

Clean Clean Total Strainer Strainer Available

Time Time Tp Density Pvp Pc Pgas Hz Hsi NPSHA Pc Req'd Margin (sec) (hour) I(F) (lbm/fte) (psia) I(psia) (feet) (feet) (feet) (feet) (psia) (feet)

Plotted Plotted Plotted Plotted on Fig I on Fig I on Fig I on Fig 2

312 0.09 133.7 61.49 2.453 15.66 30.92 12.50 3.00 40.4 10.78 11.4 557 0.15 139.5 61.38 2.853 16.19 31.28 12.50 3.00 40.8 11.17 11.8 588 0.16 140.6 61.36 2.935 16.29 31.34 12.50 3.00 40.8 11.24 11.8 619 .0.17 141.3 61.35 2.988 16.36 31.39 12.50 3.00 40.9 11.30 11.9 656 0.18 142.0 61.34 3.041 16.43 31.43 12.50 3.00 40.9 11.35 11.9 969 0.27 147.8 61.23 3.521 17.04 31.79 12.50 3.00 41.3 11.81 12.3 L-199 0.33 151.0 61.17 3.812 17.40 31.98 12.50 3.00 41.5 12.10 12.5 1.200 0.33 151.0 61.17 3.812 17.40 31.98 12.50 3.00 41.5 12.10 12.5 1,281 0.36 152.1 61.15 3.916 17.53 32.05 12.50 3.00 41.6 12.20 12.6 1,594 0.44 155.3 61.09 4.235 17.92 32.25 12.50 3.00 41.7 12.51 12.7 1.799 0.50 157.1 61.05 4.424 18.14 32.36 12.50 3.00 41.9 12.69 12.9 1.8(0)0 0.50 157.1 61.05 4.424 18.14 32.36 12'.50 3.00 41.9 12.69 12.9 1,906 0.53 158.0 61.04 4.520 18.26 32.42 12.50 3.00 41.9 12.78 12.9 2,219 0.62 160.1 60.99 4.753 18.54 32.55 12.50 3.00 42.0 13.01 13.0 2,531 0.70 162.0 60.95 4.972 18.80 32.66 12.50 3.00 42.2 13.23 13.2 2,844 0.79 163.7 60.92 5.176 19.04 32.77 12.50 3.00 42.3 13.43 13.3 3,156 1 0.88 165.4 60.88 5.387 19.29 32.87 12.50 3.00 42.4 13.63 13.4 3,469 0.96 166.9 60.85 5.579 19.51 32.97 12.50 3.00 42.5 13.82 13.5 3.599 1.00 167.4 60.84 5.644 19.59 33.00 12.50 3.00 42.5 13.88 13.5 .3.600 1.00 167.4 60.84 5.644 19.59 33.00 12.50 3.00 42.5 13.88 13.5 3,781 1.05 168.2 60.82 5.749 19.71 33.05 12.50 3.00 42.5 13.99 13.5

RHR/CS Calc 30-SEP-99 File = NPSH75MM.XLS Page I of 16

4CALCULATION SHEET

CALC. # M-734

PREPARED BY: P- PD.N

CHECKED BY: .4 (5-


SHEET 29 OF 0

Table 2 Core Spray Pump with 5%/Day Leakage Rate - 75°F Seawater F14.5-17 Lookup Lookup Eq. 5 Eq. 7 Eq. 8 Eq. 9 Eq. 10

Clean Clean Total Strainer Strainer Available Time Time Tp Density Pvp Pc Pgas Hz Hsl NPSHA Pc Req'd Margin

(sec) (hour) (0F) (lbm/nf 3) (psia) (psia) (feet) (feet) (feet) (feet) (pia _ _fee

Plotted Plotted Plotted Plotted I on Fig I on Fig I on Fig I on Fig 2 4,094 1.14 169.4 60.80 5.912 19.90 33.12 12.50 3.00 42.6 14.14 13.6 4,406 1.22 170.4 60.78 6.049 20.05 33.18 12.50 3.00 42.7 14.28 13.7 4,719 1.31 171.3 60.76 6.175 20.20 33.24 12.50 3.00 42.7 14.40 13.7 5,031 1.40 172.2 60.74 6.303 20.34 33.29 12.50 3.00 42.8 14.53 13.8

I 5,344 1.48 173.0 60.72 6.420 20.48 33.34 12.50 3.00 42.8 14.64 13.8 5,656 1.57 173.7 60.71 6.522 20.59 33.38 12.50-1 3.00 42.9 14.74 13.9 5,969 1.66 174.4 60.69 6.626 20.71 33.42 12.50 3.00 42.9 14.85 13.9 5.999 1.67 174.5 60.69 6.641 20.73 33.43 12.50 3.00 42.9 14.86 13.9 6,5(X) i 1.67 174.5 60.69 6.641 20.73 33.43 12.50 3.00 42.9 14.86 13.9 6,281 1.74 175.0 60.68 6.717 20.82 33.46 12.50 3.00 43.0 14.93 14.0 6,594 1.83 175.7 60.66 6.823 20.94 33.50 12.50 3.00 43.0 15.04 14.0 6,906 1.92 176.2 60.65 6.901 21.02 33.53 1 2.50. 3.00 43.0 15.11 14.0 7,157 1.99 l76.7 60.64 6.979 21.11 33.56 12.50 3.00 43.1 15.19 14.1 7,188 2.00 176.8 60.64 6.995 21.13 33.56 12.50 3.00 43.1 15.21 14.1 7.199 2.(0) 176.8 60.64 6.995 21.13 33.56 12.50 3.00 43.1 15.21 14.1 7,20(X) 2.00 176.8 60.64 6.995 21.13 33.56 12.50 3.00 43.1 15.21 14.1 9,033 2.51 178.8 60.60 7.315 21.48 33.67 12.50 3.00 43.2 15.52 14.2 12,498 3.47 181.0 60.55 7.681 21.88 33.78 12.50 3.00 43.3 15.88 14.3 15,848 4.40 182.0 60.53 7.850 22.06 33.80 12.50 3.00 43.3 16.05 14.3 19,325 5.37 182.3 60.52 7.903 22.10 33.78 12.50 3.00 43.3 16.10 14.3 22,924 6.37 182.2 60.52 7.885 22.06 33.74 12.50 3.00 43.2 16.08 14.2

RHR/CS Calc 30-SEP-99 File = NPSH75MM.XLSPage 2 of 16

CALCULATION SHEET

CALC. # M-734

PREPARED BY: __ _ __ _

CHECKED BY: / ,C-0REV. 2 DATE 30-SEP-"9

SHEET 3C) OF 60

Table 2 Core Spra Pump with 5%/Day Leakage Rate - 75F Seawater 11F4.5-17 Lookup Lookup Eq.5 Eq. 7 Eq. 8 Eq. 9 Eq. 10

Clean Clean Total Strainer Strainer AvailAble

Time Time Tp Density Pvp Pc Pgas Hz Hsl NPSHA Pc Req'd Margin (sec)I (hour) I OF (Ibm/ft') (psia) (psia) (feet) (feet) (feet) (feet- (pia) (feet)

Plotted Plotted Plotted Plotted I on Fig I on Fig I on Fig I on Fig 2

26,735 7.43 181.7 60.53 7.799 21.95 33.66 12.50 3.00 43.2 16.00 14.2 30,495 8.47 181.0 60.55 7.681 21.80 33.58 12.50 3.00 43.1 15.88 14.1 34,328 9.54 180.1 60.57 7.528 21.61 33.47 12.50 3.00 43.0 15.73 14.0 38,118 10.59 179.0 60.59 7.348 21.39 33.36 12.50 3.00 42.9 15.55 13.9

1 42,011 11.67 177.7 60.62 7.137 21.13 33.24 12.50 3.00 42.7 15.35 13.7 45,918 i 12.75 176.3 60.65 6.916 20.86 33.10 12.50 3.00 42.6 15.13 13.6 49,869 13.85 174.8 60.68 6.687 20.58 32.96 12.50 3.00 42.5 14.90 13.5 53,881 14.97 173.3 60.72 6.463 20.30 32.83 12.50 3.00 42.3 14.69 13.3 57.599 j 16.A) 171.9 60.74 6.260 20.05 32.70 12.50 3.00 42.2 14.49 13.2 57,600 16.00 171.9 60.74 6.260 20.05 32.70 12.50 3.00 42.2 14.49 13.2 57,880 16.08 171.8 60.75 6.246 20.04 32.69 12.50 3.00 42.2 14.47 13.2 61,998 17.22 170.3 60.78 6.035 19.77 32.55 12.50 3.00 42.0 14.27 13.0 66,179 18.38 168.7 60.81 5.817 19.50 32.41 12.50 3.00 41.9 14.05 12.9 70,369 19.55 167.2 60.85 5.618 19.25 32.27 12.50 3.00 41.8 13.86 12.8 74,594 20.72 165.7 60.88 5.425 19.01 32.13 12.50 3.00 41.6 13.67 12.6 78,915 21.92 164.2 60.91 5.237 18.77 32.00 12.50 3.00 41.5 13.49 12.5 83,272 23.13 162.8 60.94 5.068 18.55 31.87 12.50 3.00 41.4 13.32 12.4 86,399 24.00 161.8 60.96 4.949 18.40 31.77 12.50 3.00 41.3 13.20 12.3 j 86,400 24.(X) 161.8 60.96 4.949 18.40 31.77 12.50 3.00 41.3 13.20 12.3 87,590 24.33 161.4 60.97 4.903 18.34 31.74 12.50 3.00 41.2 13.16 12.2 91,959 25.54 160.0 60.99 4.741 18.13 31.61 12.50 3.00 41.1 13.00 12.1


'CALCULATION SHEET

CALC. # M-734


SHEET .?/ OF 60

PREPARED BY:

CHECKED BY:

Table 2 Core Spray Pump with 5%/Day Leakage Rate - 75OF Seawater FI4.5-17 Lookup Lookup Eq. 5 Eq. 7 Eq. 8 Eq. 9 Eq. 10


Time Time Tp Density Pvp PC Pgas Hz Hsi NPSHA Pc Req'd Margin (sec) (hour)I (F) (Ibm/fk3) (psia) (psia) (feet) (feet) (feet) (feet) (psia) (feet)

Plotted Plotted Plotted Plotted __ __ _ on Fig I on Fig I on Fig I on Fig 2 96,315 26.75 158.7 61.02 4.597 17.94 31.49 12.50 3.00 41.0 12.86 12.0 100,723 27.98 157.5 61.04 4.466 17.77 31.38 12.50 3.00 40.9 12.73 11.9 105,128 9.20 156.3 61.07 4.339 17.60 31.26 12.50 3.00 40.8 12.61 11.8 107,999 30.00 155.5 61.08 4.256 17.49 31.19 12.50 3.00 40.7 12.53 11.7 108,0(X) 30.00 155.5 61.08 4.256 17.49 31.19 12.50 3.00 40.7 12.53 11.7 109,611 30.45 155.1 61.09 4.215 17.43 31.15 12.50 3.00 40.7 12.49 11.7 114,124 31.70 154.0 61.11 4.103 17.28 31.05 12.50 3.00 40.5 12.38 11.5 118,662 32.96 153.0 61.13 4.005 17.14 30.95 12.50 3.00 40.4 12.28 11.4 123,306 34.25 151.9 61.15 3.897 17.00 30.84 12.50 3.00 40.3 12.18 11.3 127,955 35.54 151.0 61.17 3.812 16.88 30.75 12.50 3.00 40.3 12.10 11.3 132,637 36.84 150.0 61.19 3.718 16.74 30.65 12.50 3.00 40.2 12.00 11.2 137,298 38.14 149.0 61.21 3.628 16.62 30.56 12.50 3.00 40.1 11.92 i1.1 141,980 39.44 148.1 61.23 3.547 16.50 30.47 12.50 3.00 40.0 11.84 11.0 143.999 40.00 147.7 61.24 3.512 16.45 30.43 12.50 3.00 39.9 11.80 10.9 144,0(W) i 40.00 147.7 61.24 3.512 16.45 30.43 12.50 3.00 39.9 11.80 10.9 146,749 40.76 147.1 61.25 3.460 16.38 30.37 12.50 3.00 39.9 11.75 10.9 151,545 42.10 146.2 61.26 3.383 16.27 30.29 12.50 3.00 39.8 11.68 10.8 156,333 43.43 145.3 61.28 3.307 16.16 30.20 12.50 3.00 39.7 11.61 10.7 161,157 i 44.77 144.5 61.30 3.241 16.06 30.12 12.50 3.00 39.6 11.54 10.6 165,970 46.10 143.7 61.31 3.176 15.97 30.04 12.50 3.00 39.5 11.48 10.5 170,814 47.45 142.9 61.32 3.112 15.87 29.96 12.50 3.00 39.5 11.42 10.5


CALCULATION SHEET

CAMC. # M-734

REV. 2 DATE 30-SEP-"9

SHEET

PREPARED BY: P•*

CHECKED BY: Q

"/ ,

OF (o

Table 2 Core Spr y Pump with M%/Day Leakage Rate - 75*F Seawater F14.5-17 Lookup Lookup Eq. 5 Eq. 7 Eq. 8 FA-9 E9. 10


Time Time Tp Density Pvp PC Pgas Hz Hsl NPSHA Pc Req'd Margin (sec) (hour) (OF) (Ibm/ft3) (psia) (psia) (feet) (feet) (feet) (feet) (psia) (feet)

Plotted Plotted Plotted Plotted on Fig I on Fig I on Fig! on Fig 2 172.799 1 48.00 142.6 61.33 3.089 15.84 29.93 12.50 3.00 39.4 11.39 10.4

L172.800 48.00 142.6 61.33 3.089 15.84 29.93 12.50 3.00 39.4 11.39 10.4 176,400 49.00 142.2 61.34 3.054 15.78 29.89 12.50 3.00 39.4 11.36 10.4 180,000 50.00 141.7 61.34 3.020 15.73 29.84 12.50 3.00 39.3 11.33 10.3 183,600 51.00 141.3 61.35 2.987 15.68 29.79 12.50 3.00 39.3 11.30 10.3 187,200 52.00 140.8 61.36 2.954 15.63 29.75 12.50 3.00 39.2 11.26 10.2

1 190,800 53.00 140.4 61.37 2.921 15.58 29.70 12.50 3.00 39.2 11.23 10.2 194,400 54.00 140.0 61.38 2.887 15.53 29.66 12.50 3.00 39.2 11.20 10.2 198,000 55.00 139.5 61.38 2.856 15.48 29.61 12.50 3.00 39.1 11.17 10.1 201,600 56.00 139.1 61.39 2.824 15.43 29.57 12.50 3.00 39.1 11.14 10.1 L205,200 57.00 138.7 61.40 2.792 15.38 29.53 12.50 3.00 39.0 !1.11 10.0 208,800 58.00 138.2 61.41 2.760 15.33 29.48 12.50 3.00 39.0 11.08 10.0

212,400 59.00 137.8 61.41 2.729 15.29 29.44 12.50 3.00 38.9 11.05 9.9 216,000 60.00 137.3 61.42 2.699 15.24 29.40 12.50 3.00 38.9 11.02 9.9 219,600 61.00 136.9 61.43 2.668 15.19 29.36 12.50 3.00 38.9 10.99 9.9 223,200 62.00 136.5 61.44 2.638 15.15 29.32 12.50 3.00 38.8 10.96 9.8 226,800 1 63.00 136.0 61.45 2.607 15.10 29.28 12.50 3.00 38.8 10.93 9.8

1 230,400 64.00 135.6 61.45 2.578 15.06 29.24 12.50 3.00 38.7 10.90 9.7 234,000 65.00 135.2 61.46 2.549 15.01 29.20 12.50 3.00 38.7 10.87 9.7 237,600 I 66.00 134.7 61.47 2.520 14.97 29.17 12.50 3.00 38.7 10.84 9.7 241,200 67.00 134.3 61.48 2.491 14.93 29.13 12.50 3.00 38.6 10.82 9.6

RHR/CS Calc 30-SEP-99 File = NPSH75MM.XLSPage 5 of 16

CALCULATION SHEET

CALC. # M-734

PREPARED BY: P

CHECKED BY:


SHEET 33 OF 6O

Table 2 Core Spray Pump with 5%/Day Leakage Rate - 75°F Seawater F14.5-17 Lookup Lookup Eq. 5 Eq. 7 E_. 8 Eq. 9 Eq. 10

Clean Clean Total Strainer Strainer Available Time Time Tp Density Pvp PC Pgas Hz Hsl NPSHA Pc Reqd Margin

(sec) (hour) (°F) (Ibm/ft3) !pia) (psia) (feet) (feet) (feet) (feet) ia) (feet)

Plotted Plotted Plotted Plotted _______on FRIg on Fig)I on Fig!I on Fig 2

244,800 68.00 133.8 61.48 2.462 14.88 29.09 12.50 3.00 38.6 10.79 9.6 _248,400 69.00 133.4 61.49 2.434 14.84 29.06 12.50 3.00 38.6 10.76 9.6 252,000 70.00 133.0 61.50 2.407 14.80 29.03 12.50 3.00 38.5 10.73 9.5 255,600 71.00 132.5 61.51 2.379 14.76 28.99 12.50 3.00 38.5 10.71 9.5 259,200 72.00 132.1 61.51 2.351 14.72 28.96 12.50 3.00 38.5 10.68 9.5 262,800 73.00 131.9 61.52 2.337 14.70 28.95 12.50 3.00 38.4 10.67 9.4 266,400 74.00 131.7 61.52 2.324 14.70 28.97 12.50 3.00 38.5 10.66 9.5 270,000 75.00 131.5 61.53 2.311 14.70 29.00 12.50 3.00 38.5 10.64 9.5 273,600 76.00 131.2 61.53 2.298 14.70 29.03 12.50 3.00 38.5 10.63 9.5

L277,200 77.00 131.0 61.53 2.285 14.70 29.05 12.50 3.00 38.6 10.62 9.6 280,800 78.00 130.8 61.54 2.272 14.70 29.08 12.50 3.00 38.6 10.60 9.6 284,400 79.00 130.6 61.54 2.258 14.70 29.11 12.50 3.00 38.6 10.59 9.6 288,000 80.00 130.4 61.54 2.245 14.70 29.14 12.50 3.00 38.6 10.58 9.6 291,600 81.00 130.2 61.55 2.232 14.70 29.17 12.50 3.00 38.7 10.57 9.7 295,200 82.00 129.9 61.55 2.219 14.70 29.20 12.50 3.00 38.7 10.55 9.7 298,800 83.00 129.7 61.55 2.207 14.70 29.23 12.50 3.00 38.7 10.54 9.7 302,400 i 84.00 129.5 61.56 2.194 14.70 29.25 12.50 3.00 38.8 10.53 9.8 306,000 j 85.00 129.3 61.56 2.181 14.70 29.28 12.50 3.00 38.8 10.52 9.8 309,600 86.00 129.1 61.57 2.169 14.70 29.31 12.50 3.00 38.8 10.51 9.8 313,200 87.00 128.9 61.57 2.156 14.70 29.34 12.50 3.00 38.8 10.49 9.8 316,800 88.00 128.6 61.57 2.144 14.70 29.37 12.50 3.00 38.9 10.48 9.9

RHR/CS Caic 30-SEP-99 File = NPSH75MM.XLSPage 6 of 16

CALCULATION SHEET

CALC. # M-734

PREPARED BY: n______

CHECKED BY: A"9-


SHEET • OF GO

Table 2 Core Spray Pump with 5%/Day Leakage Rate - 75°F Seawater FI4.5-17 Lookup Lookup FA. 5 Eq. 7 Eq. 8 Eq. 9 Eq. 10


Time Time Tp Density Pvp PC Pgas Hz Hsl NPSHA Pc Req'd Margin (sec) (hour) (OF) (Ibm/ftO) (psia) (psia) (feet) (feet) (feet) (psia) (feet)

Plotted Plotted Plotted Plotted _ on Fig I on Fig! on Fig I on Fig 2

320,400 89.00 128.4 61.58 2.131 14.70 29.39 12.50 3.00 38.9 10.47 9.9 324,000 90.00 128.2 61.58 2.118 14.70 29.42 12.50 3.00 38.9 10.46 9.9

1 327,600 91.00 128.0 61.58 2.106 14.70 29.45 12.50 3.00 38.9 10.45 9.9 331,200 92.00 127.8 61.59 2.094 14.70 29.47 12.50 3.00 39.0 10.43 10.0 334,800 93.00 127.6 61.59 2.082 14.70 29.50 12.50 3.00 39.0 10.42 10.0 338,400 94.00 127.3 61.60 2.070 14.70 29.53 12.50 3.00 39.0 10.41 10.0 342,000 95.00 127.1 61.60 2.058 14.70 29.55 12.50 3.00 39.1 10.40 10.1

I 345,600 96.00 126.9 61.60 2.046 14.70 29.58 12.50 3.00 39.1 10.39 10.1 349,200 97.00 126.7 61.61 2.036 14.70 29.60 12.50 3.00 39.1 10.38 10.1 352,800 98.00 126.6 61.61 2.027 14.70 29.62 12.50 3.00 39.1 10.37 10.1 356400 99.00 126.4 61.61 2.017 14.70 29.64 12.50 3.00 39.1 10.36 10.1 360,000 100.00 126.2 61.61 2.008 14.70 29.66 12.50 3.00 39.2 10.35 10.2 363,600 101.00 126.0 61.62 1.998 14.70 29.68 12.50 3.00 39.2 10.34 10.2 367,200 102.00 125.9 61.62 1.989 14.70 29.70 12.50 3.00 39.2 10.33 10.2 370,800 103.00 125.7 61.62 1.980 14.70 29.72 12.50 3.00 39.2 10.32 10.2 374,400 104.00 125.5 61.63 1.971 14.70 29.74 12.50 3.00 39.2 10.32 10.2

..378,000 105.00 125.4 61.63 1.962 14.70 29.76 12.50 3.00 39.3 10.31 10.3 381,600 106.00 125.2 61.63 1.953 14.70 29.78 12.50 3.00 39.3 10.30 10.3 385,200 107.00 125.0 61.63 1.944 14.70 29.80 12.50 3.00 39.3 10.29 10.3 388,800 108.00 124.9 61.64 1.935 14.70 29.82 12.50 3.00 39.3 10.28 10.3 392,400 109.00 124.7 61.64 1.926 14.70 29.84 12.50 3.00 39.3 10.27 10.3


CALCULATION SHEET

CALC. # M-734


SHEET 357' OF 60

PREPARED BY: P HR

CHECKED BY:

Table 2 Core Spr y Pump with 5%/Day Leakage Rate - 75°F Seawater Fl 4.5-17 Lookup Lookup Eq. 5 Eq. 7 Eq. 8 Eq. 9 Eq. 10


Time Time Tp Density Pvp Pc Pgas Hz Hsi NPSHA Pc Reqd Margin (sec) (hour) (PF) (Ibm/ftl) (psia) (psia) I (feet) (feet) (feet) (feet) (psia) (feet)

(sec - efe)(sa

Plotted Plotted Plotted Plotted on Fig I_ on Fig I on Fig I on Fig 2

396,000 110.00 124.5 61.64 1.917 14.70 29.86 12.50 3.00 39.4 10.26 10.4 399,600 111.00 124.3 61.64 1.908 14.70 29.88 12.50 3.00 39.4 10.26 10.4 403,200 112.00 124.2 61.65 1.899 14.70 29.90 12.50 3.00 39.4 10.25 10.4 406,800 113.00 124.0 61.65 1.890 14.70 29.92 12.50 3.00 39.4 10.24 10.4 410,400 I 114.00 123.8 61.65 1.881 14.70 29.94 12.50 3.00 39.4 10.23 10.4 414,000 115.00 123.7 61.65 1.873 14.70 29.96 12.50 3.00 39.5 10.22 10.5 417,600 116.00 123.5 61.66 1.864 14.70 29.98 12.50 3.00 39.5 10.21 10.5 421,200 117.00 123.3 61.66 1.855 14.70 30.00 12.50 3.00 39.5 10.21 10.5 424,800 118.00 123.1 61.66 1.847 14.70 30.02 12.50 3.00 39.5 10.20 10.5 428,400 119.00 123.0 61.66 1.838 14.70 30.04 12.50 3.00 39.5 10.19 10.5

432,000 120.00 122.8 61.67 1.830 14.70 30.05 12.50 3.00 39.6 10.18 10.6 518,400 144.00 120.2 61.71 1.702 14.70 30.33 12.50 3.00 39.8 10.06 10.8 604,800 168.00 118.2 61.74 1.610 14.70 30.53 12.50 3.00 40.0 9.97 11.0 691,200 192.00 116.2 61.77 1.522 14.70 30.72 12.50 3.00 40.2 9.89 11.2 777,600 216.00 114.3 61.80 1.442 14.70 30.89 12.50 3.00 40.4 9.81 11.4 864,000 240.00 112.3 6I.83 1.362 14.70 31.06 12.50 3.00 40.6 9.73 11.6


CALCULATION SHEET

CALC. # M-734


SHEET .? OF ,Q

PREPARED BY: pi,*

CHECKED BY:

Table 2 Core Spray Pump with 5%/Day Leakage Rate - 75°F Seawater _...._ FI4.5-17 . Eq.II Eq. 12

LOCA Strainer Pc Allow NPSH Margin Debris w/ LOCA Debris per for Debris

Time Time Tp Head Loss Pc DBA FSAR w/Pc Allow

(sec) (hour) (en (feet),_ , (psia) (psig) (psia) (feet)

I Plotted Plotted Plotted Plotted Plotted _ _ _ _ on Fig ! on Fig 2 on Fig I on Fig I on Fig 2

312 0.09 133.7 0.1 10.81 0.00 14.70 9.2 1 557 0.15 139.5 0.1 11.22 0.00 14.70 8.3

588 0.16 140.6 0.1 11.31 0.00 14.70 8.1 619 0.17 141.3 0.2 11.36 0.00 14.70 8.0 656 0.18 142.0 0.2 11.42 0.00 14.70 7.9 969 0.27 147.8 1.2 12.34 0.00 14.70 6.8 1.199 0.33 151.0 2.2 13.03 0.00 14.70 6.1 1,2(X) 0.33 151.0 2.2 13.03 1.90 16.60 10.6 1,281 0.36 152.1 2.5 13.27 1.90 16.60 10.4

I 1,594 0.44 155.3 3.8 14.10 1.90 16.60 9.6 1.799 0.50 157.1 4.5 14.59 1.90 16.60 9.2 1.800 0.50 157.1 4.5 14.59 3.00 .... 17.70 11.8 1,906 0.53 158.0 4.8 14.83 3.00 17.70 11.6 2,219 0.62 160.1 5.7 15.42 3.00 17.70 11.1 2,531 0.70 162.0 6.4 15.92 3.00 17.70 10.6 2,844 0.79 163.7 6.9 16.34 3.00 17.70 10.1 3,156 0.88 165.4 7.4 16.77 3.00 17.70 9.6 3,469 0.96 166.9 7.9 17.14 3.00 17.70 9.2

1 3.599 1.00 167.4 8.0 17.27 3.00 17.70 9.0 3.600 1.00 167.4 8.0 17.27 5.00 19.70 13.8 3,781 i 1.05 168.2 8.2 17.46 5.00 19.70 13.5

RHRICS Calc 30-SEP-99 File = NPSH75MM.XLS Page 9 of 16

CALCULATION SHEET

CALC. # M-734

PREPARED BY: P¶) 0-

CHECKED BY:


SHEET 37 OF 60

- . - .- ., -- �--j.- �-.--,, ------ a- ____________________ Core SDrSV Pnmn with 5�IDiw Lenknp Rs�t� . 7�O1? �wntahpTable 2F 14.5-17 Eq. 11 Eq. 12


Time Time Tp Head Loss Pc DBA FSAR w/Pc Allow (sec) (hour) (OF) (feet) (psia) (psig) (psia) (feet)

I Plotted Plotted Plotted Plotted Plotted _ _ _ on Fig I on-Fig 2 on Fig on Fig I on Fig 2

4,094 1.14 169.4 8.5 17.75 5.00 19.70 13.2 1.22 170.4 8.8 17.98 5.00 19.70 12.8

i 4,719 1.31 171.3 9.0 18.19 5.00 19.70 12.6 5,031 !.40 172.2 9.2 18.39 5.00 19.70 12.3 5,344 1.48 173.0 9.3 18.56 5.00 19.70 12.0 5,656 1.57 173.7 9.4 18.70 5.00 19.70 11.8

i 5,969 1.66 174.4 9.5 18.84 5.00 19.70 11.5 5.999 1.67 174.5 9.5 18.86 5.00 19.70 11.5 6,(X0) 1.67 174.5 9.5 18.86 5.00 19.70 11.5 6,281 1.74 175.0 9.6 18.97 5.00 19.70 11.3 6,594 1.83 175.7 9.7 19.12 5.00 19.70 11.1 6,906 1.92 176.2 9.8 19.23 5.00 19.70 10.9 7,157 1.99 176.7 9.8 19.33 5.00 19.70 10.7 7,188 2.00 176.8 9.9 19.35 5.00 19.70 10.7 7.199 2.0() 176.8 9.9 19.36 5.00 19.70 10.7 7,200 2.00 176.9 5.3 17.44 5.00 19.70 10.7 9,033 2.51 178.8 5.4 17.78 5.00 19.70 9.9 12,498 3.47 181.0 5.4 18.14 5.00 19.70 9.1 15,848 4.40 182.0 5.4 18.30 5.00 19.70 8.7 19,325 5.37 182.3 5.3 18.33 5.00 19.70 8.6 22,924 6.37 182.2 5.3 18.32 5.00 19.70 8.6


•f•A _r.

CALCULATION SHEET

CALC. # M-734

PREPARED BY: e!> wCHECKED BY:


SHEET . OF 60

Table 2 Core �nrnv Puunrn wfth �0ZIflau J .naIrana Pa*n - '7C012' �

-F14.5-17 A.II 12 LOCA Strainer Pc Allow NPSH Margin Debris w/ LOCA Debris per for Debris


Plotted Plotted Plotted Plotted Plotted __ _ _ _ on Fig I on Fig 2 on Fig I on Fig I on Fig 2

F 26,735 7.43 181.7 5.4 18.25 5.00 19.70 8.8 30,495 8.47 181.0 5.4 18.15 5.00 19.70 9.1 34,328 9.54 180.1 5.4 18.01 5.00 19.70 9.4 38,118 10.59 179.0 5.5 17.85 5.00 19.70 9.9 42011 11.67 177.7 5.5 17.67 5.00 19.70 10.3 45:918 12.75 176.3 5.6 17.47 5.00 19.70 10.9 49,869 13.85 174.8 5.6 17.26 5.00 19.70 11.4 53,881 14.97 173.3 5.6 17.06 5.00 19.70 11.9 57.599 16.(X) 171.9 5.7 16.88 5.00 19.70 12.4 57,000 16.00 171.9 5.7 16.88 2.50 17.20 6.4 57,880 16.08 171.8 5.7 16.87 2.50 17.20 6.5 61,998 17.22 170.3 5.7 16.69 2.50 17.20 7.0 66,179 18.38 168.7 5.8 16.50 2.50 17.20 7.5 70,369 19.55 167.2 5.8 16.32 2.50 17.20 7.9 74,594 20.72 165.7 5.9 16.16 2.50 17.20 8.4 78,915 21.92 164.2 5.9 16.00 2.50 17.20 8.8 83,272 23.13 162.8 6.0 15.86 2.50 17.20 9.2 86,399 24.00 161.8 6.0 15.76 2.50 17.20 9.4 86,40W) 24(0) 161.8 6.0 15.76 2.50 17.20 9.4 87,590 24.33 161.4 6.1 15.73 2.50 17.20 9.5 91,959 25.54 160.0 6.1 15.60 2.50 17.20 9.9


dALCULATION SHEET

CALC. # M-734


PREPARED BY:

CHECKED BY:

SHEET 37 OF 60

Table 2 Core Snrav Pnmn with 5E�,Ifl,�v T�s�k�wru' RotA - '7�o1? �awafaiw.

FI4.5-17 Eq.I I__ Eq. 12


Time Time Tp Head Loss PC DBA FSAR w/Pc Allow (sec) (hour) (*F) (feet) (psia) (psig) (psia) (feet)

Plotted Plotted Plotted Plotted Plotted on Fig I on Fig 2 on Fig I on Fig I on Fig_2

96,315 26.75 158.7 6.2 15.48 2.50 17.20 10.2 100,723 27.98 157.5 6.2 15.38 2.50 17.20 10.5 105,128 29.20 156.3 6.3 15.28 2.50 17.20 10.8 107,999 i 30.00 155.5 6.3 15.22 2.50 17.20 11.0 I1W0O() 30.00 155.5 6.3 15.22 1.00 15.70 7.5 109,611 30.45 155.1 6.4 15.18 I.00 15.70 7.6 114,124 31.70 154.0 6.4 15.10 1.00 15.70 7.8 118,662 32.96 153.0 6.5 15.02 1.00 15.70 8.0 123,306 34.25 151.9 6.5 14.94 1.00 15.70 8.3 127,955 35.54 151.0 6.6 14.88 1.00 15.70 8.5 132,637 36.84 150.0 6.6 14.81 1.00 15.70 8.7 137,298 38.14 149.0 6.7 14.74 1.00 15.70 8.9 141,980 39.44 148.1 6.7 14.69 1.00 15.70 9.1 143.999 40.00 147.7 6.7 14.66 1.00 15.70 9.2

S144,(XX) 40.(X) 147.7 6.7 14.66 1.00 15.70 9.2 146,749 40.76 147.1 6.8 14.63 1.00 15.70 9.3 151,545 42.10 146.2 6.8 14.58 1.00 15.70 9.5 156,333 43.43 145.3 6.8 14.52 1.00 15.70 9.6 161,157 44.77 144.5 6.9 14.47 1.00 15.70 9.8 1 165,970 46.10 143.7 6.9 14.43 1.00 15.70 9.9 170,814 47.45 142.9 7.0 14.38 1.00 15.70 10.1


CALCULATION SHEET

CALC. # M-734

PREPARED BY:

CHECKED BY:


SHEET 4o OF ý0

Table 2 Core Snrav Pnmn with 5�II)sv Lenkaiw' Rate - 7�O1? s�ws�tArF14.5-17 _Eq. 11 Eq. 12

LOCA Strainer PC Allow NPSH Margin Debris w/ LOCA Debris per for Debris


Plotted Plotted Plotted Plotted Plotted on Fig I on Fig 2 on Fig I on Fig I on Fig 2 S172,799 ; 48.0(X. 142.6 .... 7.0 14.37 1.00 15.70 10.1

172.800 48.00 142.6 7.0 14.37 0.00 14.70 7.8 176,400 49.00 142.2 7.0 14.35 0.00 14.70 7.8

180,000 50.00 141.7 7.0 14.33 0.00 14.70 7.9 L183,600 51.00 141.3 7.1 14.31 0.00 14.70 8.0

187,200 52.00 140.8 7.1 14.29 0.00 14.70 8.1 190,800 53.00 140.4 7.1 14.27 0.00 14.70 8.1 194,400 54.00 140.0 7.2 14.25 0.00 14.70 8.2 198,000 55.00 139.5 7.2 14.23 0.00 14.70 8.3 201,600 56.00 139.1 7.2 14.21 0.00 14.70 8.4 205,200 57.00 138.7 7.2 14.19 0.00 14.70 8.4 208,800' 58.00 138.2 7.3 14.17 0.00 14.70 8.5 212,400 59.00 137.8 7.3 14.15 0.00 14.70 8.6 216,000 60.00 137.3 7.3 14.14 0.00 14.70 8.6 219,600 61.00 136.9 7.3 14.12 0.00 14.70 8.7 223,200 62.00 136.5 7.4 14.10 0.00 14.70 8.8 226,800 63.00 136.0 7.4 14.08 0.00 14.70 8.8 230,400 64.00 135.6 7.4 14.07 0.00 14.70 8.9 234,000 1 65.00 135.2 7.4 14.05 0.00 14.70 9.0 237,600 i 66.00 134.7 7.5 14.03 0.00 14.70 9.0 241,200 67.00 134.3 7.5 14.02 0.00 14.70 9.1


CALCULATION SHEET

CALC. # M-734

PREPARED BY: LIJI"-

CHECKED BY:


SHEET 41 OF (70

Table 2 Core Spray Pump with 5%/Day Leakage Rate - 75°F Seawater F14.5-17 FA_ 11 Eq. 12


Time Time Tp Head Loss PC DBA FSAR w/Pc Allow (sec) (hour) .(OF (feet) (psia) (psig) (psia) (feet)

Plotted Plotted Plotted Plotted Plotted Son Fig L on Fig 2 on Fig I on Fig I on Fig 2

244,800 68.00 133.8 7.5 14.00 0.00 14.70 9.2 248,400 69.00 133.4 7.6 13.99 0.00 14.70 9.2 252,000 70.00 133.0 7.6 13.97 0.00 14.70 9.3 255,600 71.00 132.5 7.6 13.96 0.00 14.70 9.3 259,200 72.00 132.1 7.6 13.94 0.00 14.70 9.4 262,800 73.00 131.9 7.7 13.94 0.00 14.70 9.4 266,400 i 74.00 131.7 7.7 13.93 0.00 14.70 9.5 270,000 75.00 131.5 7.7 13.93 0.00 14.70 9.5 273,600 76.00 131.2 7.7 13.92 0.00 14.70 9.5 277,200 77.00 131.0 7.7 13.92 0.00 14.70 9.6

1 280,800 78.00 130.8 7.7 13.91 0.00 14.70 9.6 284,400 79.00 130.6 7.7 13.90 0.00 14.70 9.6 288,000 i 80.00 130.4 7.8 13.90 0.00 14.70 9.6 291,600 81.00 130.2 7.8 13.89 0.00 14.70 9.7 295,200 82.00 129.9 7.8 13.89 0.00 14.70 9.7

1 298,800 83.00 129.7 7.8 13.88 0.00 14.70 9.7 302,400 84.00 129.5 7.8 13.87 0.00 14.70 9.8 306,000 85.00 129.3 7.8 13.87 0.00 14.70 9.8 309,600 86.00 129.1 7.9 13.86 0.00 14.70 9.8 313,200 i 87.00 128.9 7.9 13.86 0.00 14.70 9.8

i 316,800 88.00 128.6 7.9 13.85 0.00 14.70 9.9

RHR/CS Calc 30-SEP-99 File = NPSH75MM.XLS

4a&--

Page 14 of 16

CALCULATION SHEET

CALC. # M-734

PREPARED BY: PD 4CHECKED BY:


SHEET 412 OF

Table 2

60

Core Snrnv Pnnrn with 5'�,/I)sv Le�knwwe RItA - 7�0J� �enwtwfcwF14.5-17 Eq. 11 _Eq. 12



(sec) (hour) (OF) (feet) (psia) (psid (psia) (feet)

Plotted Plotted Plotted Plotted Plotted _ _on FigI on Fig 2 on Fig! I on Fig I on Fig 2

320,400 89.00 128.4 7.9 13.85 0.00 14.70 9.9 324,000 90.00 128.2 7.9 13.84 0.00 14.70 9.9 327,600 91.00 128.0 7.9 13.84 0.00 14.70 9.9 331,200 92.00 127.8 7.9 13.83 0.00 14.70 10.0 334,800 93.00 127.6 8.0 13.83 0.00 14.70 10.0 338,400 94.00 127.3 8.0 13.82 0.00 14.70 10.0 342,000 95.00 127.1 8.0 13.81 0.00 14.70 10.1 345,600 96.00 126.9 8.0 13.81 0.00 14.70 10.1 349,200 97.00 126.7 8.0 13.81 0.00 14.70 10.1 352,800 98.00 126.6 8.0 13.80 0.00 14.70 10.1 356,400 99.00 126.4 8.0 13.80 0.00 14.70 10.1 360,000 100.00 126.2 8T1 13.80 0.00 14.70 10.2 363,600 101.00 126.0 8.1 13.79 0.00 14.70 10.2 367,200 102.00 125.9 8.1 13.79 0.00 14.70 10.2 370,800 103.00 125.7 8.1 13.79 0.00 14.70 10.2 374,400 104.00 125.5 8.1 13.79 0.00 14.70 10.2 378,000 105.00 125.4 8.1 13.78 0.00 14.70 10.3 381,600 106.00 125.2 8.1 13.78 0.00 14.70 10.3 385,200 107.00 125.0 8.1 13.78 0.00 14.70 10.3 388,800 108.00 124.9 8.2 13.77 0.00 14.70 10.3 392,400 109.00 124.7 8.2 13.77 0.00 14.70 10.3


CALCULATION SHEET

CALC. # M-734


SHEET 4- OF - 60

PREPARED BY:

CHECKED BY:

/7 n,"t"p

Table 2 Core Spray Pump with 5%/Day Leakage Rate - 75°F Seawater F14.5-17 1Eq.1 I Eq.12


Time Time Tp Head Loss PC DBA FSAR w/Pc Allow (sec) (hour) 'IF) (feet) (Psia) (psig) , (psia) (feet)

Plotted Plotted Plotted Plotted Plotted I on Fig) on Fig 2 on Fig I on Fig) on Fig 2

396,000 I 110.00 124.5 8.2 13.77 0.00 14.70 10.4 399,600 111.00 124.3 8.2 13.76 0.00 14.70 10.4 403,200 112.00 124.2 8.2 13.76 0.00 14.70 10.4 406,800 113.00 124.0 8.2 13.76 0.00 14.70 10.4 410,400 114.00 123.8 8.2 13.75 0.00 14.70 10.4 414,000 115.00 123.7 8.2 13.75 0.00 14.70 10.5 417,600 116.00 123.5 8.2 13.74 0.00 14.70 10.5 421,200 117.00 123.3 8.3 13.74 0.00 14.70 10.5 424,800 118.00 123.1 8.3 13.73 0.00 14.70 10.5 428,400 119.00 123.0 8.3 13.73 0.00 14.70 10.5 432,000 120.00 122.8 .... 8.3 13.72 0.00 14.70 10.6 518,400 144.00 120.2 8.5 13.68 0.00 14.70 10.8 604,800 168.00 118.2 8.7 13.68 0.00 14.70 11.0 691,200 192.00 116.2 8.9 13.69 0.00 14.70 11.2

1 777,600 216.00 114.3 9.0 13.69 0.00 14.70 11.4 S864,000 240.00 112.3 9.2 13.69 0.00 14.70 11.6


CALCULATION SHEET

CALC. # M-734

PREPARED BY:

CHECKED BY: __


SHEET 44 OF 60

Table 3 RHR Pump with 5%/Day Leakage Rate - 75°F Seawater F14.5-17 Lookup Lookup Eq. 5 Eq. 7 Eq.8. Eq. 10


Time Time Tp Density Pvp Pc Pgas Hz Hsl NPSHA Pc Req'd Margin (sec) (hour) (OF) (Ibm/f 3) (sia) (psia) (feet) (feet) (feet) (feet) (Dsia) (feet)

Plotted Plotted Plotted Plotted on Fig I on Fig I or., Fig onFig 2

312 0.09 133.7 61.49 2.453 15.66 30.92 12.50 3.20 40.2 10.01 13.2 557 0.15 139.5 61.38 2.853 16.19 31.28 12.50 3.20 40.6 10.40 13.6 588 0.16 140.6 61.36 2.935 16.29 31.34 12.50 3.20 40.6 10.48 13.6 619 0.17 141.3 61.35 2.988 16.36 31.39 12.50 3.20 40.7 10.53 13.7 656 0.18 142.0 61.34 3.041 16.43 31.43 12.50 3.20 40.7 10.58 13.7 969 0.27 147.8 61.23 3.521 17.04 31.79 12.50 3.20 41.1 11.05 14.1 1.199 0.33 151.0 61.17 3.812 17.40 31.98 12.50 3.20 41.3 11.33 14.3 1,200 0.33 151.0 61.17 3.812 17.40 31.98 12.50 3.20 41.3 11.33 14.3 1,281 0.36 152.1 61.15 3.916 17.53 32.05 12.50 3.20 41.4 11.43 14.4 1,594 0.44 155.3 61.09 4.235 17.92 32.25 12.50 3.20 41.5 11.74 14.5

i 1.799 0.50 157.1 61.05 4.424 18.14 32.36 12.50 3.20 41.7 11.93 14.7 i1.800 0.50 157.1 61.05 4.424 18.14 32.36 12.50 3.20 41.7 11.93 14.7 1,906 0.53 158.0 61.04 4.520 18.26 32.42 12.50 3.20 41.7 12.02 14.7 2,219 0.62 160.1 60.99 4.753 18.54 32.55 12.50 3.20 41.8 12.25 14.8 2,531 0.70 162.0 60.95 4.972 18.80 32.66 12.50 3.20 42.0 12.46 15.0 2,844 0.79 163.7 60.92 5.176 19.04 32.77 12.50 3.20 42.1 12.66 15.1 3,156 0.88 165.4 60.88 5.387 19.29 32.87 12.50 3.20 42.2 12.87 15.2 3,469 0.96 166.9 60.85 5.579 19.51 32.97 12.50 3.20 42.3 13.06 15.3 3.5994 1.( 167.4 60.84 5.644 19.59 33.00 12.50 3.20 42.3 13.12 15.3 31600 3 10.) 167.4 60.84 5.644 19.59 33.00 12.50 3.20 42.3 13.12 15.3

3,781 1.05 168.2 60.82 5.749 19.71 33.05 12.50 3.20 42.3 13.23 15.3

RHR/CS Caic 30-SEP-99 File = NPSH75MM.XLS Page I of 16

CALCULATION SHEET

CALC. # M-734


SHEET A-4 OF 6O

PREPARED BY: M W

CHECKED BY: Z146/"P,

Table 3 RHR Pu p with 5%/Day Leakage Rate - 75°F Seawater FI4.5-17 Lookup Lookup .5 -Eq. 7 FA. 8 Eq. Eq. 10


Time Time Tp Density Pvp Pc Pgas Hz Hsi NPSHA Pc Reqd Margin (sec) (hour) (OF) Qlbm/ft3) piaI (psia) (feet)I (feet) (feet) (feet) (psia) (feet)


4,094 1.14 169.4 60.80 5.912 19.90 33.12 12.50 3.20 42.4 13.38 15.4 4,406 1.22 170.4 60.78 6.049 20.05 33.18 12.50 3.20 42.5 13.52 15.5 4,719 1.31 171.3 60.76 6.175 20.20 33.24 12.50 3.20 42.5 13.64 15.5 5,031 1.40 172.2 60.74 6.303 20.34 33.29 12.50 3.20 42.6 13.77 15.6 5,344 1.48 173.0 60.72 6.420 20.48 33.34 12.50 3.20 42.6 13.88 15.6 5,656 1 i.57 173.7 60.71 6.522 20.59 33.38 12.50 3.20 42.7 13.98 15.7 5,969 1.66 174.4 60.69 6.626 20.71 33.42 12.50 3.20 42.7 14.09 15.7 5,91"9 1.67 174.5 60.69 6.641 20.73 33.43 12.50 3.20 42.7 14.10 15.7 6,0(X) 1.67 174.5 60.69 6.641 20.73 33.43 12.50 3.20 42.7 14.10 15.7

L6,281 1.74 175.0 60.68 6.717 20.82 33.46 12.50 3.20 42.8 14.18 15.8 6,594 1.83 175.7 60.66 6.823 20.94 33.50 12.50 3.20 42.8 14.28 15.8 6,906 1.92 176.2 60.65 6.901 21.02 33.53 12.50 3.20 42.8 14.36 15.8 7,157 1.99 176.7 60.64 6.979 21.11 33.56 12.50 3.20 42.9 14.43 15.9 7,188 ... 2.00 176.8 60.64 6.995 21.13 33.56 12.50 3.20 42.9 14.45 15.9 7.199 2.00 176.8 60.64 6.995 21.13 33.56 12.50 3.20 42.9 14.45 15.9 7.200 2.00 176.8 60.64 6.995 21.13 33.56 12.50 3.20 42.9 14.45 15.9 9,033 2.51 178.8 60.60 7.315 21.A8 33.67 12.50 3.20 43.0 14.76 16.0 12,498 3.47 18.8 60.55 7.681 21.88 33.78 12.50 3.20 43.1 15.12 16.1 15,848 4.40 182.0 60.53 7.850 22.06 33.80 12.50 3.20 43.1 15.29 16.1 19,325 5.37 182.3 60.52 7.903 22.10 33.78 12.50 3.20 43.1 15.34 16.1

22,924 6.37 182.2 60.52 7.885 22.06 33.74 12.50 3.20 43.0 15.32 16.0


CALCULATION SHEET

CALC. # M-734


SHEET 46 OF 40

PREPARED BY: M 4CHECKED BY:

Table 3 RHR Pu p with 5%/Day Leakage Rate - 75*F Seawater F14.5-17 Lookup Lookup Eq. 5 Eq7 -Eq. 8 Eq. 9 Eq. 10


Time Time Tp Density Pvp Pc Pgas Hz Hsl NPSHA PC Req'd Margin (sec) -hour) ('F) (Ibm/ft3) (sia) (psia) (feet) (feet) (feet) (feet) (psia) (feet)

Plotted Plotted Plotted Plotted _ _ on Fig) I on Fig I on Fig onFig 2

26,735 7.43 181.7 60.53 7.799 21.95 33,66 12.50 3.20 43.0 15.24 16.0 30,495, 8.47 181.0 60.55 7.681 21.80 33.58 12.50 3.20 42.9 15.12 15.9 34,328 9.54 180.1 60.57 7.528 21.61 33.47 12.50 3.20 42.8 14.97 15.8 38,118 10.59 179.0 60.59 7.348 21.39 33.36 12.50 3.20 42.7 14.80 15.7 42,011 11.67 177.7 60.62 7.137 21.13 33.24 12.50 3.20 42.5 14.59 15.5

!45,918 1 12.75 176.3 60.65 6.916 20.86 33.10 12.50 3.20 42.4 14.37 15.4 49,869 i 13.85 174.8 60.68 6.687 20.58 32.96 12.50 3.20 42.3 14.15 15.3 53,881 14.97 173.3 60.72 6.463 20.30 32.83 12.50 3.20 42.1 13.93 15.1 57.599 16.(X) 171.9 60.74 6.260 20.05 32.70 12.50 3.20 42.0 13.73 15.0 57,6(X) 16.00 171.9 60.74 6.260 20.05 32.70 12.50 3.20 42.0 13.73 15.0 57,880 16.08 171.8 60.75 6.246 20.04 32.69 12.50 3.20 42.0 13.71 15.0 61,998 17.22 170.3 60.78 6.035 19.77 32.55 12.50 3.20 41.8 13.51 14.8 66,179 18.38 168.7 60.81 5.817 19.50 32.41 12.50 3.20 41.7 13.29 14.7 70,369 19.55 167.2 60.85 5.618 19.25 32.27 12.50 3.20 41.6 13.10 14.6 74,594 20.72 165.7 60.88 5.425 19.01 32.13 12.50 3.20 41.4 12.91 14.4 78,915 21.92 164.2 60.91 5.237 18.77 32.00 12.50 3.20 41.3 12.72 14.3 83,272 23.13 162.8 60.94 5.068 18.55 31.87 12.50 3.20 41.2 12.56 14.2 86,399 24.00 161.8 60.96 4.949 18.40 31.77 12.50 3.20 41.1 12.44 14.1 86,4W() 24.00 161.8 60.96 4.949 18.40 31.77 12.50 3.20 41.1 12.44 14.1 87,590 24.33 161.4 60.97 4.903 18.34 31.74 12.50 3.20 41.0 12.40 14.0 91,959 25.54 160.0 60.99 4.741 18.13 31.61 12.50 " 3.20 40.9 12.24 13.9


CALCULATION SHEET

CALC. # M-734

PREPARED BY: •?j)1t

CHECKED BY:


SHEET 47 OF -

Table 3 RHR Pump with 5%/Day Leakage Rate - 75°F Seawater Fl 4.5-17 Lookup Lookup .. Eq. 5 Eq. 7 Eq. 8 Eq. 9 Eq. 10


Time Time Tp Density Pvp Pc Pgas Hz HsI NPSHA Pc Req'd Margin (sec) (hour) (O) Ibm/ft3) (psia) .psia , (feet) - (feet) (feet) (psia) (feet)

Plotted Plotted Plotted Plotted _ on Fig I on Fig! on Fig I on Fig 2

96,315 26.75 158.7 61.02 4.597 17.94 31.49 12.50 3.20 40.8 12.10 13.8 100,723 27.98 157.5 61.04 4.466 17.77 31.38 12.50 3.20 40.7 11.97 13.7 105,128 29.20 156.3 61.07 4.339 17.60 31.26 12.50 3.20 40.6 11.84 13.6 _ 107,999 j 30.00 155.5 61.08 4.256 17.49 31.19 12.50 3.20 40.5 11.76 13.5

108,W0() 30.0) 155.5 61.08 4.256 17.49 31.19 12.50 3.20 40.5 11.76 13.5 L 109,611 30.45 155.1 61.09 4.215 17.43 31.15 12.50 3.20 40.5 11.72 13.5

114,124 31.70 154.0 61.11 4.103 17.28 31.05 12.50 3.20 40.3 11.61 13.3 118,662 32.96 153.0 61.13 4.005 17.14 30.95 12.50 3.20 40.2 11.52 13.2 123,306 34.25 151.9 61.15 3.897 17.00 30.84 12.50 3.20 40.1 11.41 13.1

I 127,955 35.54 151.0 61.17 3.812 16.88 30.75 12.50 3.20 40.1 11.33 13.1 [132,637 36.84 150.0 61.19 3.718 16.74 30.65 12.50 3.20 40.0 11.24 13.0 j137,298 38.14 149.0 61.21 3.628 16.62 30.56 12.50 3.20 39.9 11.15 12.9 1 141,980 39.44 148.1 61.23 3.547 16.50 30.47 12.50 3.20 39.8 11.07 12.8

143.999 40.00 147.7 61.24 3.512 16.45 30.43 12.50 3.20 39.7 11.04 12.7 144.0(0) 40.0( 147.7 61.24 3.512 16.45 30.43 12.50 3.20 39.7 11.04 12.7 146,749 40.76 147.1 61.25 3.460 16.38 30.37 12.50 3.20 39.7 10.99 12.7 151,545 42.10 146.2 61.26 3.383 16.27 30.29 12.50 3.20 39.6 10.91 12.6 156,333 43.43 145.3 61.28 3.307 16.16 30.20 12.50 3.20 39.5 10.84 12.5 161,157 44.77 144.5 61.30 3.241 16.06 30.12 12.50 3.20 39.4 10.78 12.4 165,970 46.10 143.7 61.31 3.176 15.97 30.04 12.50 3.20 39.3 10.71 12.3 170,814 47.45 142.9 61.32 3.112 15.87 29.96 12.50 3.20 39.3 10.65 12.3


I

CALCULATION SHEET

CALC. # M-734

PREPARED BY: I M

CHECKED BY: _


SHEET 4• OF 60

Table 3 RHR Pump with 5%/Day Leakage Rate - 75°F Seawater FI4.5-17 Lookup Lookup Eq. 5 Eq. 7 Eq. 8 E. Eq. 10


Time Time Tp Density Pvp Pc Pgas Hz Hsl NPSHA Pc Req'd Margin (sec) (hour) (OF) (Ibn/ft) (psia) (psia) (feet) (feet) (feet) I(feet) (psia) (feet)

77Plotted Plotted Plotted Plotted "_ _ _ _ on Fig I on Fig ) on Fig I on Fig 2

172,799 48.00 142.6 61.33 3.089 15.84 29.93 12.50 3.20 39.2 10.63 12.2 172.800" 48.00 142.6 61.33 3.089 15.84 29.93 12.50 3.20 39.2 10.63 12.2 176,400 49.00 142.2 61.34 3.054 15.78 29.89 12.50 3.20 39.2 10.59 12.2 180,000 50.00 141.7 61.34 3.020 15.73 29.84 12.50 3.20 39.1 10.56 12.1

1 183,600 51.00 141.3 61.35 2.987 15.68 29.79 12.50 3.20 39.1 10.53 12.1 187,200 52.00 140.8 61.36 2.954 15.63 29.75 12.50 3.20 39.0 10.50 12.0 190,800 53.00 140.4 61.37 2.921 15.58 29.70 12.50 3.20 39.0 10.46 12.0 1 94,400 54.00 140.0 61.38 2.887 15.53 29.66 12.50 3.20 39.0 10.43 12.0 198,000 55.00 139.5 61.38 2.856 15.48 29.61 12.50 3.20 38.9 10.40 11.9 201,600 56.00 139.1 61.39 2.824 15.43 29.57 12.50 3.20 38.9 10.37 11.9 205,200 57.00 138.7 61.40 2.792 15.38 29.53 12.50 3.20 38.8 10.34 1!.8

208,800 58.00 138.2 61.41 2.760 15.33 29.48 12.50 3.20 38.8 10.31 11.8 212,400 59.00 137.8 61.41 2.729 15.29 29.44 12.50 3.20 38.7 10.28 11.7 216,000 60.00 137.3 61.42 2.699 15.24 29.40 12.50 3.20 38.7 10.25 11.7 219,600 61.00 136.9 61.43 2.668 15.19 29.36 12.50 3.20 38.7 10.22 11.7 223,200 62.00 136.5 61.44 2.638 15.15 29.32 12.50 3.20 38.6 10.19 11.6 226,800 i 63.00 136.0 61.45 2.607 15.10 29.28 12.50 3.20 38.6 10.16 11.6 230,400 64.00 135.6 61.45 2.578 15.06 29.24 12.50 3.20 38.5 10.13 11.5 234,0001 65.00 135.2 61.46 2.549 15.01 29.20 12.50 3.20 38.5 10.10 11.5

237,600 66.00 134.7 61.47 2.520 14.97 29.17 12.50 3.20 38.5 10.08 11.5 241,200r 67.00 134.3 61.48 2.491 14.93 29.13 12.50 3.20 38.4 10.05 11.4


CALCULATION SHEET

CALC. # M-734


SHEET 4 OF 60

PREPARED BY: P bfI

CHECKED BY: / G-I

Table 3 RHR Pump with 5%/Day Leakage Rate - 75°F Seawater F14.5-17 Lookup Lookup Eq. 5 Eq. 7 Eq. 8 Eq. 9 Eq. 10


Time Time Tp Density Pvp PC Pgas Hz Hsl NPSHA Pc Req'd Margin (sec) (hour) - OF (Ibm/ft3 ) (psia) (psia)I (feet) (feet) (feet) (feet) (psia) (feet)


1 244,800 68.00 133.8 61.48 2.462 14.88 29.09 12.50 3.20 38.4 10.02 11.4 248,400 69.00 133.4 61.49 2.434 14.84 29.06 12.50 3.20 38.4 9.99 11.4 252,000 70.00 133.0 61.50 2.407 14.80 29.03 12.50 3.20 38.3 9.97 11.3 255,600 71.00 132.5 61.51 2.379 14.76 28.99 12.50 3.20 38.3 9.94 11.3 259,200 72.00 132.1 61.51 2.351 14.72 28.96 12.50 3.20 38.3 9.91 11.3 262,800 73.00 131.9 61.52 2.337 14.70 28.95 12.50 3.20 38.2 9.90 11.2 266,400 74.00 131.7 61.52 2.324 14.70 28.97 12.50 3.20 38.3 9.89 11.3 270,000 75.00 131.5 61.53 2.311 14.70 29.00 12.50 3.20 38.3 9.87 11.3 273,600 76.00 131.2 61.53 2.298 14.70 29.03 12.50 3.20 38.3 9.86 11.3 277,200 77.00 131.0 61.53 2.285 14.70 29.05 12.50 3.20 38.4 9.85 11.4 280,800 78.00 130.8 61.54 2.272 14.70 29.08 12.50 3.20 38.4 9.84 11.4 284,400 79.00 130.6 61.54 2.258 14.70 29.11 12.50 3.20 38.4 9.82 11.4 288,000 80.00 130.4 61.54 2.245 14.70 29.14 12.50 3.20 38.4 9.81 11.4 291,600 81.00 130.2 61.55 2.232 14.70 29.17 12.50 3.20 38.5 9.80 11.5 295,200 82.00 129.9 61.55 2.219 14.70 29.20 12.50 3.20 38.5 9.78 11.5 298,800 1 83.00 129.7 61.55 2.207 14.70 29.23 12.50 3.20 38.5 9.77 11.5 302,400 84.00 129.5 61.56 2.194 14.70 29.25 12.50 3.20 38.6 9.76 11.6 306,000 85.00 129.3 61.56 2.181 14.70 29.28 12.50 3.20 38.6 9.75 11.6 309,600 g 86.00 129.1 61.57 2.169 14.70 29.31 12.50 3.20 38.6 9.74 11.6 313,200 87.00 128.9 61.57 2.156 14.70 29.34 12.50 3.20 38.6 9.72 11.6 316,800 88.00 128.6 61.57 2.144 14.70 29.37 12.50 3.20 38.7 9.71 11.7


CALCULATION SHEET

CALC. # M-734

PREPARED BY: 9 W

CHECKED BY:


SHEET 570 OF 60

o/4

Table 3 RHR Pump with 5%/Day Leakage Rate - 75°F Seawater 11F4.5-17 Lookup Lookup 1Eq. 5 Eq. 7 Eq. 8 F. 9 Eq. 10


Time Time Tp Density Pvp Pc Pgas Hz Hsl NPSHA Pc Req'd Margin

(sec) (hour) , (*F lbJm/ft3) (psia) (psia) (feet) (feet) (feet) (feet) ( ia) (feet)

Plotted Plotted Plotted Plotted __ ... _ on Fig I on Fig) on Fig I on Fig 2 320,400 89.00 128.4 61.58 2.131 14.70 29.39 12.50 3.20 38.7 9.70 11.7 324,000 90.00 128.2 61.58 2.118 14.70 29.42 12.50 3.20 38.7 9.69 11.7 327,600 91.00 128.0 61.58 2.106 14.70 29.45 12.50 3.20 38.7 9.68 11.7 331,200 92.00 127.8 61.59 2.094 14.70 29.47 12.50 3.20 38.8 9.66 11.8 334,800 93.00 127.6 61.59 2.082 14.70 29.50 12.50 3.20 38.8 9.65 11.8

1 338,400 94.00 127.3 61.60 2.070 14.70 29.53 12.50 3.20 38.8 9.64 11.8 342,000 95.00 127.1 61.60 2.058 14.70 29.55 12.50 3.20 38.9 9.63 11.9 345,600 96.00 126.9 61.60 2.046 14.70 29.58 12.50 3.20 38.9 9.62 11.9 349,200 97.00 126.7 61.61 2.036 14.70 29.60 12.50 3.20 38.9 9.61 11.9 352,800 i 98.00 126.6 61.61 2.027 14.70 29.62 12.50 3.20 38.9 9.60 11.9

I356,400 99.00 126.4 61.61 2.017 14.70 29.64 12.50 3.20 38.9 9.59 11.9 360,000 100.00 126.2 61.61 2.008 14.70 29.66 12.50 3.20 39.0 9.58 12.0 363,600 101.00 126.0 61.62 1.998 14.70 29.68 12.50 3.20 39.0 9.57 12.0 367,200 102.00 125.9 61.62 1.989 14.70 29.70 12.50 3.20 39.0 9.56 12.0 370,800 103.00 125.7 61.62 1.980 14.70 29.72 12.50 3.20 39.0 9.55 12.0 374,400 104.00 125.5 61.63 1.971 14.70 29.74 12.50 3.20 39.0 9.55 12.0 378,000 105.00 125.4 61.63 1.962 14.70 29.76 12.50 3.20 39.1 9.54 12.1 381,600 106.00 125.2 61.63 1.953 14.70 29.78 12.50 3.20 39.1 9.53 12.1 385,200 107.00 125.0 61.63 1.944 14.70 29.80 12.50 3.20 39.1 9.52 12.1 388,800 108.00 124.9 61.64 1.935 14.70 29.82 12.50 3.20 39.1 9.51 12.1

' 392,400 109.00 124.7 61.64 1.926 14.70 29.84 12.50 3.20 39.1 9.50 12.1

RHR/CS Caic 30-SEP-99 File = NPSH75MM.XLS Page 7 of 16

CALCULATION SHEET

CALC. # M-734

PREPARED BY: 9 1.4

CHECKED BY: _____


SHEET 57 OF 60

Table 3 RHR Pu p with 5 %/Day Leakage Rate - 75*F Seawater F14.5-17 Lookup Lookup ._L .5 Eq. 7 Eq._8 Eq. 9 Eq. 10


Time Time Tp Density Pvp PC Pgas Hz Hsl NPSHA Pc Req'd Margin

(sec) (hour) ffl (Ibm/ft3) (psia) (psia) (feet) (feet) (feet) (feet) (psia) (feet)

Plotted Plotted Plotted Plotted t___on Fig I on Fig I on Fig I on Fig 2

396,000 110.00 124.5 61.64 1.917 14.70 29.86 12.50 3.20 39.2 9.49 12.2 399,600 111.00 124.3 61.64 1.908 14.70 29.88 12.50 3.20 39.2 9.48 12.2 403,200 112.00 124.2 61.65 1.899 14.70 29.90 12.50 3.20 39.2 9.48 12.2 406,800 113.00 124.0 61.65 1.890 14.70 29.92 12.50 3.20 39.2 9.47 12.2 410,400 114.00 123.8 61.65 1.881 14.70 29.94 12.50 3.20 39.2 9.46 12.2 414,000 115.00 123.7 61.65 1.873 14.70 29.96 12.50 3.20 39.3 9.45 12.3 417,600 116.00 123.5 61.66 1.864 14.70 29.98 12.50 3.20 39.3 9.44 12.3 421,200 117.00 123.3 61.66 1.855 14.70 30.00 12.50 3.20 39.3 9.43 12.3 424,800 118.00 123.1 61.66 1.847 14.70 30.02 12.50 3.20 39.3 9.43 12.3 428,400 119.00 123.0 61.66 1.838 14.70 30.04 12.50 3.20 39.3 9.42 12.3 432,000 120.00 122.8 61.67 [830 14.70 30.05 12.50 3.20 39.4 9.41 12.4 518,400 144.00 120.2 61.71 1.702 14.70 30.33 12.50 3.20 39.6 9.29 12.6 604,800 168.00 118.2 61.74 1.610 14.70 30.53 12.50 3.20 39.8 9.20 12.8 691,200 192.00 116.2 61.77 1.522 14.70 30.72 12.50 3.20 40.0 9.11 13.0 777,600 216.00 114.3 61.80 1.442 14.70 30.89 12.50 3.20 40.2 9.04 13.2

._864,000 240.00 112.3 61.83 1.362 14.70 31.06 12.50 3.20 40.4 8.96 13.4

RHRPCS Calc 30-SEP-99 File = NPSH75MM.XLS Page 8 of 16

CALCULATION SHEET

CALC. # M-734

PREPARED BY:

CHECKED BY:


SHEET 52 OF 6Q

1" I

Table 3 RHR Pump with 5%/Day Leakage Rate - 75°F Seawater F14.5-17 Eq.,_I I Eq. 12



(sec) (hour) (OF) (feet) (psia) (Msig) (Psia) (feet)

Plotted Plotted Plotted on Fig ) on Fig 2 on Fig I

312 0.09 133.7 0.1 10.04 0.00 14.70 11.0 557 0.15 139.5 0.1 10.46 0.00 14.70 10.1 588 0.16 140.6 0.1 10.54 0.00 14.70 9.9 619 0.17 141.3 0.2 10.59 0.00 14.70 9.8 656 0.18 142.0 0.2 10.65 0.00 14.70 9.7 969 0.27 147.8 1.2 11.58 0.00 14.70 8.6

1.199 0.33 151.0 2.2 12.26 0.00 14.70 7.9 1.200) 0.33 151.0 2.2 12.26 1.90 16.60 12.4 1,281 0.36 152.1 2.5 12.51 1.90 16.60 12.2 1,594 0.44 155.3 3.8 13.34 1.90 16.60 11.4 1.799 0.50 157.1 4.5 13.83 1.90 16.60 11.0 1,800 0.50 157.1 4.5 13.83 3.00 17.70 13.6

I 1,906 0.53 158.0 4.8 14.07 3.00 17.70 13.4 2,219 0.62 160.1 5.7 14.65 3.00 17.70 12.9

F 2,531 i 0.70 162.0 6.4 15.15 3.00 17.70 12.4 2,844 0.79 163.7 6.9 15.58 3.00 17.70 11.9 3,156 0.88 165.4 7.4 16.01 3.00 17.70 11.4 3,469 0.96 166.9 7.9 16.38 3.00 17.70 11.0 3.599 i. 0() 167.4 8.0 16.51 3.00 17.70 10.8 3,600 1.00 167.4 8.0 16.51 5.00 19.70 15.6 3,781 1.05 168.2 8.2 16.70 5.00 19.70 15.3


CALCULATION SHEET

CALC. # M-734


SHEET 5 OF 60

PREPARED BY:

CHECKED BY:

Table 3 RHR Primo with 5%/Day Leaka,!e Rate - 750 F SeawaterF14.5-17 !!. 11 .12



(sec) (hour) (OF) (feet) (psia) (psig) (psia) (feet)

Plotted Plotted Plotted [ on Fig I on Fig 2 on Fig I 4,094 1.14 169.4 8.5 16.99 5.00 19.70 15.0 4,406 1.22 170.4 8.8 17.22 5.00 19.70 14.6

I 4,719 1.31 171.3 9.0 17.43 5.00 19.70 14.4 5,031 1.40 172.2 9.2 17.63 5.00 19.70 14.1 5.344 1.48 173.0 9.3 17.80 5.00 19.70 13.8 5,656 1.57 173.7 9.4 17.94 5.00 19.70 13.6 5,969 1.66 174.4 9.5 18.08 5.00 19.70 13.3

1 5.999 1.67 174.5 9.5 18.10 5.00 19.70 13.3 6,(XX) t 1.67 174.5 9.5 18.10 5.00 19.70 13.3 6,281 1.74 175.0 9.6 18.22 5.00 19.70 13.1 6,594 1.83 175.7 9.7 18.36 5.00 19.70 12.9 6,906 1.92 176.2 9.8 18.47 5.00 19.70 12.7 7,157 I 1.99 176.7 9.8 18.57 5.00 19.70 12.5 7,188 2.00 176.8 9.9 18.60 5.00 19.70 12.5 7.199 2.00 176.8 9.9 18.60 5.00 19.70 12.5 7,200 2.(X) 176.8 5.3 16.68 5.00 19.70 12.5 9,033 2.51 178.8 5.4 17.02 5.00 19.70 11.7 12,498! 3.47 181.0 5.4 17.38 5.00 19.70 10.9 15,848 1 4.40 182.0 5.4 17.54 5.00 19.70 10.5 19,325 5.37 182.3 5.3 17.58 5.00 19.70 10.4 22,924 6.37 182.2 5.3 17.56 5.00 19.70 10.4


CALCULATION SHEET

CALC. # M-734


SHEET { OF (0

PREPARED BY: Pt'M-'

CHECKED BY:

Table 3 RHR Pump with 5%/Day Leakage Rate - 75*F Seawater F14.5-17 Eq. 11 Eq. 12



(sec) (hour) (OF) (feet) (psia) (Psi) (sia) (feet)

Plotted Plotted Plotted , on Fig I on Fig 2 on Fig I

26,735 7.43 181.7 5.4 17.49 5.00 19.70 10.6 30,495 8.47 181.0 5.4 17.39 5.00 19.70 10.9 34,328 9.54 180.1 5.4 17.26 5.00 19.70 11.2 38,118 10.59 179.0 5.5 17.10 5.00 19.70 11.7 42,011 11.67 177.7 5.5 16.91 5.00 19.70 12.1 45,918 12.75 176.3 5.6 16.71 5.00 19.70 12.7 49,869 13.85 174.8 5.6 16.50 5.00 19.70 13.2 53,881 14.97 173.3 5.6 16.31 5.00 19.70 13.7 57.599 16.0) 171.9 5.7 16.12 5.00 19.70 14.2 57,600 i 16.00 171.9 5.7 16.12 2.50 17.20 8.2 57,880 16.08 171.8 5.7 16.11 2.50 17.20 8.3 61,998 : 17.22 170.3 5.7 15.93 2.50 17.20 8.8 66,179 i 18.38 168.7 5.8 15.73 2.50 17.20 9.3 70,369 19.55 167.2 5.8 15.56 2.50 17.20 9.7 74,594 20.72 165.7 5.9 15.40 2.50 17.20 10.2 78,915 21.92 164.2 5.9 15.24 2.50 17.20 10.6 83,272 23.13 162.8 6.0 15.10 2.50 17.20 11.0 86,399 24.00 161.8 6.0 15.00 2.50 17.20 11.2 86,430 i 24.00 161.8 6.0 15.00 2.50 17.20 11.2 87,590 24.33 161.4 6.1 14.96 2.50 17.20 11.3 91,959 25.54 160.0 6.1 14.83 2.50 17.20 11.7


CALCULATION SHEET

CALC. # M-734

PREPARED BY: __ _

CHECKED BY:


SHEET 65"- OF

Table 3

60

RHR Pnmn with 5%Iflav Lenkrnir�' Rnfr - 7�l? ��i�wfttArF14.5-17 FA]. 11 Eq. 12



(see) (hour) (OF) (feet) Mia), (psig) Ipia) (feet)

Plotted Plotted Plotted , on Fig I on Fig 2 on Fig )

96,315 26.75 158.7 6.2 14.72 2.50 17.20 12.0 100,723 27.98 157.5 6.2 14.62 2.50 17.20 12.3 105,128 29.20 156.3 6.3 14.52 2.50 17.20 12.6 107,999 30.00 155.5 6.3 14.45 2.50 17.20 12.8 I08,W(0) 30.00 155.5 6.3 14.45 1.00 15.70 9.3 109,611 30.45 155.1 6.4 14.42 1.00 15.70 9.4 114,124 31.70 154.0 6.4 14.33 1.00 15.70 9.6 118,662 1 32.96 153.0 6.5 14.26 1.00 15.70 9.8 123,306 34.25 151.9 6.5 14.17 1.00 15.70 10.1 127,955 35.54 151.0 6.6 14.11 1.00 15.70 10.3 132,637 36.84 150.0 6.6 14.04 1.00 15.70 10.5 137,298 38.14 149.0 6.7 13.98 1.00 15.70 10.7

i 141,980 39.44 148.1 6.7 13.92 1.00 15.70 10.9 1 143.999 40.00 147.7 6.7 13.90 1.00 15.70 11.0

144,000 40.00 147.7 6.7 13.90 1.00 15.70 11.0 S146,749 40.76 147.1 6.8 13.86 1.00 15.70 11.1

151,545 42.10 146.2 6.8 13.81 1.00 15.70 11.3 156,333 43.43 145.3 6.8 13.75 1.00 15.70 11.4 161,157 44.77 144.5 6.9 13.71 1.00 15.70 11.6 165,970 46.10 143.7 6.9 13.66 1.00 15.70 11.7 170,814 1 47.45 142.9 7.0 13.62 1.00 15.70 11.9


CALCULATION SHEET

CALC. # M-734


SHEET S .. OF 60O

PREPARED BY: . 2]II

CHECKED BY:

Table 3 RHR Pump with 5%/Day Leakage Rate - 75°F Seawater FI4.5-17 Eq. I I Eq. 12


Time Time Tp Head Loss PC DBA FSAR w/Pc Allow

(sec) (hour) (OF) (feet) p(sia , (psig) Ipsia) (feet)

Plotted Plotted Plotted _ on Fig I on Fig 2 on Fig I

.172,99 48.00 142.6 7.0 13.60 1.00 15.70 11.9 172.8(X) 48.00 142.6 7.0 13.60 0.00 14.70 9.6 176,400 49.00 142.2 7.0 13.58 0.00 14.70 9.6 180,000 50.00 141.7 7.0 13.56 0.00 14.70 9.7 183,600 51.00 141.3 7.1 13.54 0.00 14.70 9.8 187,200 52.00 140.8 7.1 13.52 0.00 14.70 9.9

1190,800 0 53.00 140.4 7.1 13.50 0.00 14.70 9.9 194,400 54.00 140.0 7.2 13.48 0.00 14.70 10.0 198,000 55.00 139.5 7.2 13.46 0.00 14.70 10.1

1201,600 56.00 139.1 7.2 13.44 0.00 14.70 10.2 205,200 57.00 138.7 7.2 13.42 0.00 14.70 10.2 208,800 58.00 138.2 7.3 13.41 0.00 14.70 10.3 212,400 59.00 137.8 7.3 13.39 0.00 14.70 10.4 216,000 60.00 137.3 7.3 13.37 0.00 14.70 10.4 219,600 61.00 136.9 7.3 13.35 0.00 14.70 10.5 223,200 62.00 136.5 7.4 13.33 0.00 14.70 10.6 226,800 63.00 136.0 7.4 13.32 0.00 14.70 10.6 230,400 64.00 135.6 7.4 13.30 0.00 14.70 10.7 234,000! 65.00 135.2 7.4 13.28 0.00 14.70 10.8 Y3'7,600 66.00 134.7 7.5 13.27 0.00 14.70 10.8 241,200 67.00 134.3 7.5 13.25 0.00 14.70 10.9

RHRICS Calc 30-SEP-99 File = NPSH75MM.XLS Page 13 of 16

6ALCULATION SHEET

CALC. # M-734

PREPARED BY: M'X W*

CHECKED BY:


SHEET , .7 OF 60

Table 3 RHR Pump with 5%/Day Leakage Rate - 75°F Seawater F14.5-17 Eq. 11 Eq. 12


Time Time Tp Head Loss PC DBA FSAR w/Pc Allow

(secI (hour) Il ( I(feet) I psia (psig) (pia) (feet)

Plotted Plotted Plotted on Fig I on Fig 2 on Fig I

244,800 68.00 133.8 7.5 13.23 0.00 14.70 11.0 248,400 69.00 133.4 7.6 13.22 0.00 14.70 11.0 252,000 70.00 133.0 7.6 13.20 0.00 14.70 11.1 255,600 71.00 132.5 7.6 13.19 0.00 14.70 11.1 259,200 72.00 132.1 7.6 13.17 0.00 14.70 11.1 225,00 I7.00 132.1 7.6 13.17 0.00 14.70 11.2 262,800 I 73.00 131.9 7.7 13.17 0.00 14.70 11.2 266,400 74.00 131.7 7.7 13.16 0.00 14.70 11.3 270,000 75.00 131.5 7.7 13.16 0.00 14.70 11.3 273,600 76.00 131.2 7.7 13.15 0.00 14.70 11.3 277,200 77.00 131.0 7.7 13.15 0.00 14.70 11.4 280,800! 78.00 130.8 7.7 13.14 0.00 14.70 11.4 284,400 79.00 130.6 7.7 13.13 0.00 14.70 11.4

288,00 80.00 130.4 7.8 13.13 0.00 14.70 11.4 2915600 81.00 130.2 7.8 13.12 0.00 14.70 11.5 295,200 82.00 129.9 7.8 13.12 0.00 14.70 11.5 298,800 83.00 129.7 7.8 13.11 0.00 14.70 11.5 306,000 85.00 129.5 7.8 13.11 0.00 14.70 11.6 30600 85.00 129.3 7.8 13.10 0.00 14.70 11.6 309,600 86.00 129.9 7.9 13.09 0.00 14.70 11.6 313,200 87.00 128.9 7.9 13.09 0.00 14.70 11.6 31!6,800 88.00 128.6 7.9 13.08 0.00 14.70 11!.7


CALCULATION SHEET

CALC. # M-734


SHEET 58

PREPARED BY:

CHECKED BY:

OF GO

Table 3 RHR Puvnn with 5�,/D�iv T�a�k�iw& Rs�t� - 7�OJ� �

F14.5-17 ,A. 11 Eq. 12 LOCA Strainer Pc Allow NPSH Margin Debris w/ LOCA Debris per for Debris

Time Time Tp Head Loss Pc DBA FSAR w/Pc Allow (sec) (hour) (°F) (feet) (psia) (psig) (psia) (feet)

Plotted Plotted Plotted on Fig I on Fig 2 on Fig)

320,400 89.00 128.4 7.9 13.08 0.00 14.70 11.7 324,000 90.00 128.2 7.9 13.07 0.00 14.70 11.7 327,600 91.00 128.0 7.9 13.07 0.00 1.-.70 11.7 331,200 92.00 127.8 7.9 13.06 0.00 14.70 11.8

i 334,800 93.00 127.6 8.0 13.06 0.00 14.70 11.8 338,400 94.00 127.3 8.0 13.05 0.00 .. 14.70 11.8 342,000 95.00 127.1 8.0 13.04 0.00 14.70 11.9 345,600 96.00 126.9 8.0 13.04 0.00 14.70 11.9 349,200 97.00 126.7 8.0 13.04 0.00 14.70 11.9 352,800 98.00 126.6 8.0 13.03 0.00 14.70 11.9 "356,400 99.00 126.4 8.0 13.03 0.00 14.70 11.9 360,000 100.00 126.2 8.1 13.03 0.00 14.70 12.0 363,600 101.00 126.0 8.1 13.02 0.00 14.70 12.0 367,200 102.00 125.9 8.1 13.02 0.00 14.70 12.0 370,800 103.00 125.7 8.1 13.02 0.00 14.70 12.0 374,400 104.00 125.5 8.1 13.02 0.00 14.70 12.0 378,000 105.00 125.4 8.1 13.01 0.00 14.70 12.1 3781,00 1I106.00 125.2 8.1 13.01 0.00 14.70 12.1 385,200 107.00 125.0 8.1 13.01 0.00 14.70 12.1 388,800 108.00 124.9 8.2 13.00 0.00 14.70 12.1 392,400 109.00 124.7 8.2 13.00 0.00 14.70 12.1

RHR/CS Calc 30-SEP-99 File = NPSH75MM.XLS Page IS of 16

CALCULATION SHEET

CALC. # M-734

PREPARED BY:

CHECKED BY:


SHEET .59 OF 60

Table 3 RHR Pump with 5%/Day Leakage Rate - 75°F Seawater 7FI4.5-17 Eq.I Eq. 12



Plotted Plotted Plotted Son Fig I on Fig 2 on Fig I

396,000 110.00 124.5 8.2 13.00 0.00 14.70 12.2 399,600 1 111.00 124.3 8.2 12.99 0.00 14.70 12.2 403,200 112.00 124.2 8.2 12.99 0.00 14.70 12.2 406,800 1 13.00 124.0 8.2 12.99 0.00 14.70 12.2 410,400 114.00 123.8 8.2 12.98 0.00 14.70 12.2 414,000 115.00 123.7 8.2 12.98 0.00 14.70 12.3 417,600 i 116.00 123.5 8.2 12.97 0.00 14.70 12.3 421,200 117.00 123.3 8.3 12.97 0.00 14.70 12.3 424,800 118.00 123.1 8.3 12.96 0.00 14.70 12.3 428,400 119.00 123.0 8.3 12.96 0.00 14.70 12.3 432,000 120.00 122.8 8.3 12.95 0.00 14.70 12.4

1 518,400 144.00 120.2 8.5 12.91 0.00 14.70 12.6 ".604,800 168.00 118.2 8.7 12.91 0.00 14.70 12.8 691,200 192.00 116.2 8.9 12.91 0.00 14.70 13.0 777,600 216.00 114.3 9.0 12.91 0.00 14.70 13.2

S864,000 240.00 112.3 9.2 12.91 0.00 14.70 13.4


PREPARED BY: 5P W•

CALC. # M-734 CHECKED BY: z 9 REV. 2 DATE 30-SEP-99

SHEET 60 OF 60

F. References

1. Calculation M-897 Rev. 3 "ECCS Strainer Performance Analysis", Duke Engineering Calculation No. 2552.F02-03 Rev. 3, SUDDS/RF # 98-145 Rev. 2.

2. NUREG/CR-6224, "Parametric Study of the Potential for BWR ECCS Strainer Blockage Due to LOCA Generated Debris", U.S. Nuclear Regulatory Commission, October 1995.

3. NRC IE Bulletin 96-03 "Potential Plugging of Emergency Core Cooling Suction Strainers by Debris in Boiling-Water Reactors".

4. Regulatory Guide 1.82 Rev. 2, "Water Sources for Long-Term Recirculation Cooling Following a Loss-of-Coolant Accident", U.S. Nuclear Regulatory Commission, May, 1996.

5. Calculation M-662 Rev. E4 "RHR and Core Spray Pump NPSH and Suction Pressure Drop".

6. Calculation M-748 Rev. 0 "Containment Temperature & Humidity Conditions and Nitrogen Mass".

7. NRC Letter 97.078 "Issuance of Amendment No. 173 to Facility Operating License No. DPR-35, Pilgrim Nuclear Power Station (TAC No. M97789), July 3, 1997.

8. GE Report GE-NE-T23-00749-01 "Containment Heatup Analysis with ANS 5.1 Plus 2 Sigma Decay Heat", December 1997 with Transmittal of Data Tables as Attachment, SUDDS/RF # 97-96.

9. FSAR Section 14.5.3 "Loss of Coolant Accident".

10. FSAR Section 14.5.3.1.3 "Core Standby Cooling System Pump Net Positive Suction Head".

11. PNPS Procedure 2.2.19.5 "RHR Modes of Operation for Transients".

G. List of Attachments

Attachment 1 = Independent Verification Statement Record

Attachment 2 = Preliminary Evaluation Checklist

CALCULATION SHEET

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