emr-87003 t-87003 full - reviewed

SuperChemsTM Report

Welcome to SuperChems Version 6.50mp -- September 20, 2012

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Contents

RELIEF SYSTEM SUMMARY (System 1 of 1)PART 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1PART 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

EQUIPMENT SUMMARYT-87003 - PHENOLIC WATER TANK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

RELIEF DEVICE SUMMARYEMR-87003 - Mechanical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4EMR-87003 - Piping Layout Table (EMR-87003 PIPING) . . . . . . . . . . . . . . . . . . . . 5EMR-87003 - Relief Flow Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

OVERPRESSURE SCENARIO REPORTEMR-87003 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

SCENARIOS AND CALCULATIONSEMR-87003_T-87003-01A - FIRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11EMR-87003_T-87003-09A.1 - INDIVIDUAL CONTROL VALVE OPEN-CLOSE . . . . . . . 13

Relief System Summary (System 1 of 1)Part 1

PROTECTIVE RELIEF DEVICES

TAG DEVICE LOCATION P&IDEMR-87003 Top of Tank T-87003 E-93298-08

EQUIPMENT PROTECTED

TAG DESCRIPTION P&IDT-87003 - PHENOLIC WATER TANK Phenolic Water Tank E-93298-08

The currently installed relief system is adequate

OVERPRESSURE SCENARIOS REQUIRING RELIEFKEY SCENARIO YES NO NA KEY01A EXTERNAL FIRE EXPOSURE X 01A02A INCORRECT VALVE POSITION OR CLOSED OUTLETS X 02A03A OVERFILLING X 03A03B OUTBREATHING X 03B04B INBREATHING X 04B05A THERMAL EXPANSION, INCLUDING SOLAR HEATING X 05A06A LOSS OF COOLING X 06A07A LOSS OF HEATING X 07A08A POWER FAILURE X 08A09A INSTRUMENT FAILURE OR FAILURE OF AUTOMATIC CONTROLS X 09A10A UTILITY FAILURE X 10A11A ABNORMAL HEAT INPUT X 11A12A ABNORMAL FLOW INPUT X 12A13A EXCHANGER TUBE FAILURE X 13A14A PROCESS INDUCED RUNAWAY REACTION X 14A15A ACCUMULATION OF NON-CONDENSABLES X 15A15B LOSS OF REFLUX - TOWER TOP X 15B15C LOSS OF REFLUX - SIDE STREAM X 15C18A MIXING OF HOT, REACTIVE, AND HIGHLY VOLATILE MATERIALS X 18A20A ABSORBENT FLOW FAILURE X 20A22A INTERNAL EXPLOSION OR DEFLAGRATION X 22A99A OTHER X 99A

(C) iOiQ LLC. SuperChems Expert v7.21mp (09-30-2013) Page 1 of 14

EMR-87003_T-87003.cor January 28, 2014

Relief System Summary (System 1 of 1)Part 2

RELIEF SYSTEM COMMENTS

Relief device: EMR-87003, vessel: T-87003 - PHENOLIC WATER TANK

1 EMR-87003 provides adequate overpressure protec on for all iden ed overpressure con ngencies a ec ng the EQUIPMENT (T-87003).

RELIEF SYSTEM CALCULATIONS SUMMARY

Overpressure Scenario PRD TagVapor

QualityRequired

Relief Rate(lb/h)

Device Capacity

(lb/h)

Required Area(in²)

Actual Area(in²)

Inlet P. Loss

(% of Set P.)

Back P.(% of Set P.)

EMR-87003_T-87003-01A -FIRE

EMR-87003 1.00 3,511.26 7,265.76 7.1285 28.8902 NA NA

EMR-87003_T-87003-09A.1 - INDIVIDUAL CONTROL VALVE OPEN-CLOSE

EMR-87003 1.00 896.36 5,828.88 1.3352 28.8902 NA NA

An inherent 5% tolerance is incorporated in the inlet pressure drop and backpressure


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Only two overpressure scenarios here. The rest point towards goosenecks so they will need to be imported to this file.

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EQUIPMENT SUMMARYT-87003 - PHENOLIC WATER TANK

Vessel Built Per API-650Vessel Shape Ver cal Cylindrical; User de ned headsP&ID E-93298-08

MECHANICAL DATADesign Pressure / MAWP 1.00 psig Design Temperature / MAWT 250.00 °FDesign Vacuum -0.07 psig MDMT -20.00 °FMaximum Opera ng Pressure 0.00 psig Maximum Opera ng Temperature 120.00 °FStraight Side Length 11.83 Top Head Type ConicalInner Diameter 11.00 Bo om Head Type Flat

**VESSEL IS EXPOSED TO FIREFire Flux 101.87 BTU/hr/in²Dura on 2.00 hBo om Eleva on Above Where Liquids Can Pool 0.00Vessel We ed Area 58,886.01 in²Addi onal User Speci ed We ed Area 0.00 in²API 2000 Mi ga on Factor 1Frac on of Vessel Area Exposed to Fire 0.6823Top head and bo om head were removed from we ed area es mate

EQUIPMENT NOTES

Design Condi ons from P&ID (E-93298-08).

Dimensions from (E-93298-08).

Opera ng Condi ons from Process Flow Diagram (E-100456-00).

PROTECTIVE RELIEF DEVICES

TAG LOCATION P&IDEMR-87003 Top of Tank T-87003 E-93298-08


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RELIEF DEVICE SUMMARYEMR-87003

Loca on Top of Tank T-87003P&ID E-93298-08

RELIEF VALVE DATAManufacturer Protectoseal Set Pressure 1.00 psigModel 7806H Ori ce Le erType Pressure vent Actual Ori ce Area 28.890 in²Size 6 x 6 Design Ori ce Area 28.890 in²Flange Class 150 RF x 150 RF Blowdown 7.00 %Code Associated Rupture Disk NoStamp Required? Mul ple Relief Devices? NoVapor Kd 1.000 Discharge Loca on AtmosphereTwo Phase Kd Design Basis EXTERNAL FIRE EXPOSURELiquid Kd Flow Area Basis Other

MATERIALS OF CONSTRUCTIONBody Disk HolderBonnet BellowsNozzle SpindleNozzle Ring Balanced PistonDisk or Seat DiaphragmO-Ring RetainerGuide Bol ngGuide Ring So GoodsSpring GasketsSpring Coa ng Comply with NACE MR 0175? No

ACCESSORIESCap Screwed Test Gag Not RequiredLi ing Lever Plain Vent with Bug Screen Not Required

PROTECTED EQUIPMENT

TAG DESCRIPTION PIDT-87003 - PHENOLIC WATER TANK Phenolic Water Tank E-93298-08


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The information for EMR-87003 seems to indicate it is a 4" size device. Consider correcting this information.

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Aluminum

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None

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None

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4" size

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Yes

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Assume the flow area is approximated by a 4 NPS sch 40 pipe... which is 12.73026449 in2.



PIPING LAYOUT EMR-87003 PIPING

Number of Segments 1Number of Rupture Disks 0Number of Relief Valves 1

Inlet Outlet Length( )

Roughness( )

No. of Fi ngsSegment Name NPS Schd. NPS Schd. Angle Fi ng Type K1 Kinf kd

EMR-87003


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DESIGN BASISScenario EMR-87003_T-87003-01A - FIRE Required Flow Rate 3,511.26 lb/h Required Area 7.1285 in²System Capacity 7,265.76 lb/h Device Actual Area 28.8902 in²Inlet Pressure Drop NA Total Backpressure NARelief Pressure 1.20 psig Backpressure Correc on Factor 1.00Relief Temperature 215.39 °F Percent Overpressure 20.00 %Fluid DEFAULT PRD Outlet Temperature 202.39 °FFluid Phase VAPOR Vapor MW / Liquid Speci c Gravity Mw, v = 18.015Mass Percent Vapor at PRD Inlet 100.00 % Liquid Latent Heat of Vaporiza on 971.76 BTU/lbViscosity at Relief Temperature Vap = 0.012 cP Isentropic Expansion Coe cient K,v = 1.323Vapor Compressibility Factor Z,v = 0.991 Maximum Reac on Force(in / out) / 458.23 lbfSpeci c Heat Ra o Cp/Cv = 1.325 Exit Mach Number 0.35

NON-DESIGN SIZINGScenario EMR-87003_T-87003-09A.1 - INDIVIDUAL CONTROL VALVE OPEN-CLOSERequired Flow Rate 896.36 lb/h Required Area 1.3352 in²System Capacity 5,828.88 lb/h Device Actual Area 28.8902 in²Inlet Pressure Drop NA Total Backpressure NARelief Pressure 1.10 psig Backpressure Correc on Factor 1.00Relief Temperature 80.00 °F Percent Overpressure 10.00 %Fluid NITROGEN PRD Outlet Temperature 69.00 °FFluid Phase VAPOR Vapor MW / Liquid Speci c Gravity Mw, v = 28.014Mass Percent Vapor at PRD Inlet 100.00 % Liquid Latent Heat of Vaporiza on NAViscosity at Relief Temperature Vap = 0.018 cP Isentropic Expansion Coe cient K,v = 1.401Vapor Compressibility Factor Z,v = 1.000 Maximum Reac on Force(in / out) / 443.20 lbfSpeci c Heat Ra o Cp/Cv = 1.400 Exit Mach Number 0.32


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OVERPRESSURE SCENARIO REPORTEMR-87003

Overpressure Scenario Applicability

EMR-87003_T-87003-01A - FIRE Applicable

Fire exposure may result in overpressure due to vaporiza on of residing liquid. Note that the equipment is located in a re zone and is within the re exposure height of 30 feet.

EMR-87003_T-87003-02A.1 - MANUAL VALVE OPERATION OPEN-CLOSE Applicable

*** VAPOR ***

Source: [Line 2"-1BC1P-N-0047-0.0"-N from Nitrogen Header on P&ID E-93298-08]:

Blocked vapor outlet may result in overpressure. The upstream pressure is limited to 235 PSIG maximum normal opera ng pressure in the Nitrogen header, which is greater than the design pressure of T-87003 (1.0 psig). See 09A.1-FV-8686 fail open for calcula ons.

The vapor outlet may become blocked in due to any number of events, including the following:

1. Inadvertent closure of the manual valve on the vapor outlet line (6"-1SA0G-AV-3006-0.0"-N) on P&ID E-93305-07.

*** LIQUID ***

Source: [Line 2"-1SA0G-DM-0058-1.5"-FET from P-87919 & P-87920, Demin Water Pumps on P&ID E-93334-08]:

Over lling may result in overpressure. The upstream pressure is limited to the discharge pressure of the upstream PUMP (P-87919 & P-87920 on P&ID E-93334-08; 125 psig) which is greater than the design pressure of V-87003 (1.0 psig). The ow rate of DM through the control valve, LV-8687B and its Bypass Valve, is the unknown and is the largest feed ow to T-87003.

According to the tank datasheet, the maximum feed rate to T-87003 is 1680 gal/h. It will take less than 15 mins to over ll the tank. Over lling is considered a credible overpressure con ngency.

Refer to Gooseneck-87003 for calcula ons.

Source: [Line 1"-1SA0G-PHE-2173-1.5"-EC from E-87020 on P&ID E-93231-04]:

Over lling may result in overpressure. The upstream pressure is limited to 1.7 psig by the maximum normal opera ng pressure in the jet condensate header, which is greater than the design pressure of T-87003 (1.0 psig). The ow rate of this line is 0.1 GPM and is unlikely to cause over lling.





Source: [Line 2"-1SA0G-HC-5083-1.5"-EC from E-87514 on P&ID E-93282-05]:



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merge calculation

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Demineralized water?

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reword.

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reword to "the maximum normal operating pressure (235 psig)"

Source: [Line 2"-1SA0G-HC-3087-1.5"-EC from E-87309 on P&ID E-93248-05]:


The liquid outlet may become blocked in due to any number of events, including the following:

1. Inadvertent closure of the manual valve on the outlet line (LINE 2"-1SA0G-PHE-0053-0.0"-N)

2. Shut-down of the downstream pump (P-87045 & P-87046; PID E-93298-08)

EMR-87003_T-87003-02A.2 - REMOTE BLOCKED OUTLET DUE TO CHECK VALVE FAILURE Not Applicable

[2" TYPE bypass valve around LV-8687B on line 2"-1SA0G-DM-0058-1.5"-FET from P-87919 & P-87920 Demin Water Pumps; P&ID E-93334-08]: Normal opera ng pressure upstream of the listed valve is 125 psig according to the control valve data sheet for OPERATIONS, which is greater than the design pressure of T-87003 (1.0 psig); therefore, inadvertently opening the listed valve may result in overpressure and over lling.

[1.5" check valve on line 1.5"-1SA0G-PHE-0057-1.5"-FET from P-87045 & P-87046 to V-87204; P&ID E-93234-16]: Normal opera ng pressure downstream of the listed check valve is 13.5 psig according to H&MB which is greater than the design pressure of upstream T-87003 (1.0 psig); therefore, latent failure of the check valve followed by shut-down of P-87045 & P-87046 may result in overpressure due to back ow. There is at leastone block valve upstream or downstream of the check valve, refer to scenario: T-87003_STORAGE TANK-02A.1 - MANUAL VALVE OPERATION OPEN-CLOSE

[1.5" check valve on line 1.5"-1SA0G-PHE-0056-1.5"-FET from P-87045 & P-87046 to V-87205; P&ID E-93235-15]: Normal opera ng pressure downstream of the listed check valve is 7.5 psig according to H&MB which is greater than the design pressure of upstream T-87003 (1.0 psig); therefore, latent failure of the check valve followed by shut-down of P-87045 & P-87046 may result in overpressure due to back ow. There is at leastone block valve upstream or downstream of the check valve, refer to scenario: T-87003_STORAGE TANK-02A.1 - MANUAL VALVE OPERATION OPEN-CLOSE

[1.5" check valve on line 1.5"-1SA0G-PHE-0056-1.5"-FET from P-87045 & P-87046 to T-87000; P&ID E-93294-16]: Normal opera ng pressure downstream of the listed check valve is 0.0 psig according to H&MB which is less than the design pressure of upstream T-87003 (1.0 psig); therefore, latent failure of the check valve followed by shut-down of P-87045 & P-87046 WILL NOT result in overpressure due to back ow. There is at least one block valve upstream or downstream of the check valve, refer to scenario: T-87003_STORAGE TANK-02A.1 - MANUAL VALVE OPERATION OPEN-CLOSE

EMR-87003_T-87003-02A.3 - REMOTE IMPROPER VALVE SEQUENCING Not Applicable

RVVB-87003 discharges into to the atmosphere and improper valve sequencing would have no e ect on RVVB-87003.

EMR-87003_T-87003-03A - REMOTE INEFFECTIVE OPERATOR INTERVENTION Not Applicable

No credit for operator interven on was applied to any of the listed scenarios.

EMR-87003_T-87003-04A - OUTBREATHING Applicable

Outbreathing may result in overpressure due to the in ow of liquid to the tank T-87003 or due to expansion and vaporiza on of the liquid inventory (FLUID) caused by an increase in ambient condi ons.

The following feeds to T-87003 are:

1"-1SA0G-PHE-2173-1.5"-EC from E-87020 on P&ID E-93231-04 is only 0.1 GPM (0.0134 CFM) which is unlikely to require Outbreathing as line 3"-1SA0G-AV-0042-0.0"-N is open to E-87006 on P&ID E-93305-07.



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LV-8687B

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how is this not applicable?


2"-1SA0G-HC-5083-1.5"-EC from E-87514 on P&ID E-93282-05 is only 0.8 GPM (0.11 CFM) which is unlikely to require Outbreathing as line 3"-1SA0G-AV-0042-0.0"-N is open to E-87006 on P&ID E-93305-07.

2"-1SA0G-HC-3087-1.5"-EC from E-87309 on P&ID E-93248-05 is only 0.2 GPM (0.027 CFM) which is unlikely to require Outbreathing as line 3"-1SA0G-AV-0042-0.0"-N is open to E-87006 on P&ID E-93305-07.

2"-1SA0G-DM-0058-1.5"-FET from P-87919 & P-87920 on P&ID E-93334-08 is of UNKNOWN FLOW RATE which is likely to require Outbreathing. THE FLOW RATE FROM THE DM HEADER MUST BE ESTIMATED

Refer to RVVB-87003 Scenario-04B for calcula ons.

EMR-87003_T-87003-04B - VACUUM CREDIBLE INBREATHING Applicable

Inbreathing as a result of the contrac on or condensa on of vapors caused by a decrease in ambient temperature or as a result of the ou low of FLUID from the tank (TAG) may result in underpressure.

Inbreathing will be caused by pumpout of liquids by P-87045 & P-87046 at rates of possibly 50 GPM according to PI&D informa on.

EMR-87003 DOES NOT PROTECT T-87003 from Inbreathing. See Scenario 04B for RVVB-87003 calcula ons pertaining to Inbreathing.

EMR-87003_T-87003-05A - THERMAL EXPANSION RELIEF Not Applicable

The equipment does not operate liquid-full during this mode of opera on; therefore, thermal expansion is not expected to result in overpressure.

EMR-87003_T-87003-06A.1 - GENERAL COOLING WATER FAILURE Not Applicable

No sources of externally supplied cooling were iden ed for considera on.

EMR-87003_T-87003-06A.2 - PARTIAL COOLING WATER FAILURE Not Applicable


EMR-87003_T-87003-06A.3 - INDIVIDUAL COOLING WATER FAILURE Not Applicable


EMR-87003_T-87003-08A - GENERAL POWER FAILURE Not Applicable

In the event of a power failure, power will be lost to the following equipment:

* EQUIPMENT (P-87045 & P-87046 on P&ID E-93298-08), resul ng in inability to pump out T-87003. Feed lines to T-87003 y gravity ow and will con nue, possibly leading to over lling T-87003. See Scenario 02A for calcula ons of over lling.

EMR-87003_T-87003-08B - INDIVIDUAL POWER FAILURE Not Applicable



EMR-87003_T-87003-08C - PARTIAL POWER FAILURE Not Applicable



EMR-87003_T-87003-09A.1 - INDIVIDUAL CONTROL VALVE OPEN-CLOSE Applicable

[PV-8686 (FAIL SAFE CLOSED) on line 2"-1BC1P-N-0047-0.0"-N from Ni rogen Header; P&ID E-93298-08]: Normal opera ng pressure upstream of the listed control valve is 235 psig according to OPERATIONS which is greater than the design pressure of T-87003 (1.0 psig); therefore, failure open of the listed control valve may result in overpressure.


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what, was this estimated?

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T-87003

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Water

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P&ID

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pertaining to

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if there is a calculation, it's applicable

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[LV-8687A (FAIL SAFE CLOSED) on line 2"-1SA0G-DM-0058-1.5"-FET from P-87919 & P-87920; P&ID E-93334-08]: Normal opera ng pressure upstream of the listed control valve is 125 psig according to / OPERATIONS which is greater than the design pressure of T-87003 (1.0 psig); thereforefailure open of the listed control valve may result in overpressure. Refer to scenario 02A and 03A for considera on of failure of control valve leading to over lling.

The over lling will be protected by the Gooseneck. See gooseneck T-87003 for calcula ons.

EMR-87003_T-87003-09A.1 - INDIVIDUAL CONTROL VALVE OPEN-CLOSE REQUIRED RELIEF RATE Applicable


[LV-8687A (FAIL SAFE CLOSED) on line 2"-1SA0G-DM-0058-1.5"-FET from P-87919 & P-87920; P&ID E-93334-08]: Normal opera ng pressure upstream of the listed control valve is 125 psig according to / OPERATIONS which is greater than the design pressure of T-87003 (1.0 psig); thereforefailure open of the listed control valve may result in overpressure. Refer to scenario 02A and 03A for considera on of failure of control valve leading to over lling.


EMR-87003_T-87003-09A.2 - REMOTE_ BOTH CONTROL VALVE AND BYPASS WIDE OPEN Applicable

LV-8687B (FAIL SAFE CLOSED) on line 2"-1SA0G-DM-0058-1.5"-FET from P-87919 & P-87920; P&ID E-93334-08: The listed control valve has a 2" bypass valve. Consider failure open of bypass with control valve in normal opera on.

EMR-87003_T-87003-10D - GENERAL INSTRUMENT FAILURE Not Applicable

No u lity failure situa ons were iden ed that adversely a ect the analyzed process system during this mode of opera on.

EMR-87003_T-87003-10E - STEAM FAILURE Not Applicable

No hea ng failure situa ons were iden ed that adversely a ect the analyzed process system during this mode of opera on.

EMR-87003_T-87003-12B - REMOTE VAPOR BREAKTHROUGH Not Applicable

There are no situa ons of remote vapor breakthrough.

EMR-87003_T-87003-13A - REMOTE - HEAT EXCHANGER TUBE RUPTURE Not Applicable

No heat exchangers tube failure situa ons were iden ed that adversely a ect the analyzed relief system during this mode of opera on.

EMR-87003_T-87003-14A - REACTIVE HAZARDS Not Applicable

There are no apparent reac ve hazards which may result in an overpressure.


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SCENARIOS AND CALCULATIONSEMR-87003

Overpressure Scenario EMR-87003_T-87003-01A - FIRECalcula on Method(s) GAS/VAPOR RELIEF UNDER FIRE/USER HEATING USING CCPS/API 520; PIPES CONTAINING VAPOR

SCENARIO APPLICABILITY

Fire exposure may result in overpressure due to vaporiza on of residing liquid. Note that the equipment is located in a re zone and is within the re exposure height of 30 feet.

GAS/VAPOR RELIEF UNDER FIRE/USER HEATING USING CCPS/API 520 COMMENTS

The Vapor Relief Under Fire or External Hea ng Using CCPS and API 520 model is used to quan fy the required ow area in the event of an external re.

The Hea ng Load and relief requirement are based on the re ux calcula ons as described in the equipment notes.

The Ini al Vessel Liquid Temperature is the normal opera ng temperature based on vessel speci ca on sheet.

The Hea ng Load is calculated based on the re ux as described above.

The Set Pressure is the set pressure of the tank vent(EMR-87003; 1 psig).

The back pressure is 0 psig since the vent relieves to atmosphere.

The Discharge Coe cient is the discharge coe cient for the relief device (0.978).

The liquid inventory (water) is based on the Equipment Data Sheet, with uid proper es obtained f rom SuperChems.

GAS/VAPOR RELIEF UNDER FIRE/USER HEATING USING CCPS/API 520 INFORMATIONInputsHea ng rate 3,414,445.51 BTU/hrSet pressure 1.00 psigBack pressure 0.00 psigPercent overpressure 20.00 %Discharge coe cient 0.978OutputsTemperature at maximum pressure 216.06 °FCompressibility factor 0.99Density 0.01 lb/galHeat of vaporiza on 971.76 BTU/lbAverage Molecular Weight 18.02Speci c Volume Correc on Factor 1.00Correc on factor vapor density 0.01 lb/galCorrec on factor liquid density 7.97 lb/galBack pressure correc on factor (Kb) 1.00Flow is cri cal (choked) NoEvapora on/relief rate 3,511.26 lb/hVolumetric ow rate 72,727.13 SCFHRequired relief device ori ce area 7.129 in²

Ini al Vessel Liquid Inventory DataComponent Chemical Formula Mass Frac on Mole Frac on Molecular WeightWATER H2O 1.0000 1.0000 18.02

RELIEF CAPACITY COMMENTS - EMR-87003 PIPING

The Pipes Containing Vapor model is used to quan fy the relief system performance in the event of external re scenario .

The Inlet Pressure is the relief pressure based on the design pressure of the tank plus 20% allowable accumula on.

The Inlet Temperature is the relief temperature calculated in scenario EMR-87003-STORAGE TANK-T-87003-01A-FIRE.

The backpressure (Surroundings/Back Pressure) is 0 psig since the vent relieves to atmosphere.

Relief system piping (EMR-87003 piping layout) is based on a vent set on tank directly and relieves to atmosphere directly.


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The uid composion is water with uid proper es obtained from SuperChems.

RELIEF CAPACITY - EMR-87003 PIPINGRelief Condi ons:Temperature 215.39 °FPressure 1.20 psigSuperimposed backpressure 0.00 psigExit Condi ons:Exit Temperature 202.39 °FExit Pressure 0.00 psigExit Mach Number 0.35Pressure at device inlet 0.00 psigBackpressure 0.00 psigVapor Mass Flow Rate 7,265.76 lb/hVolumetric Flow Rate 150,488.59 SCFHRelief Device Flow Area 28.8902 in²

Vibra on Risk Analysis (IEC Acous c E ciency Used)Segment #, Type, Name D/t Maximum SPL

dBLimit SPL

dBSPL Di erence

dBVibra on Risk?

001, Pressure Relief Valve (ori ce), EMR-87003 21.66 138.04 172.93 -34.89 Not Likely

Sound Power Level Pro leIEC acous c e ciency used

Max SPL, dB SPL Limit, dB

Soun

d Po

wer

Lev

er, d

B

80

100

120

140

160

180

0 0.001 0.002 0.003 0.004 0.005 0.006

Axis Distance,

RELIEF STREAM DATAComponent Chemical Formula Mass Frac on Mole Frac on Molecular WeightWATER H2O 1.0000 1.0000 18.02


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SCENARIOS AND CALCULATIONSEMR-87003

Overpressure Scenario EMR-87003_T-87003-09A.1 - INDIVIDUAL CONTROL VALVE OPEN-CLOSECalcula on Method(s) IDEAL NOZZLE; PIPES CONTAINING VAPOR

SCENARIO APPLICABILITY


[LV-8687A (FAIL SAFE CLOSED) on line 2"-1SA0G-DM-0058-1.5"-FET from P-87919 & P-87920; P&ID E-93334-08]: Normal opera ng pressure upstream of the listed control valve is 125 psig according to / OPERATIONS which is greater than the design pressure of T-87003 (1.0 psig); therefore failure open of the listed control valve may result in overpressure. Refer to scenario 02A and 03A for considera on of failure of control valve leading to over lling.


IDEAL NOZZLE COMMENTS

The Ideal Nozzle model is used to quan fy the required ow area in the event of control valve PV-8686 wide open.

The relief temperature (nozzle inlet Temperature) is based on the normal opera ng temperature.

The relief pressure (nozzle inlet Pressure) is the design pressure of the tank plus 10% allowable accumula on.

The backpressure (Surroundings/Back Pressure) is 0 psig because the relief device discharges to atmosphere.

The relief requirement (Mass Flow Rate) is based on the required relief rate calcula on when PV-8686 wide open.

The Discharge Coe cient is 0.8 since the relief device is an emergency vent.

The uid composi on is nitrogen, with uid proper es obtained from SuperChems.

IDEAL NOZZLE INFORMATIONInput:Ini al Phase VAPORTemperature 80.00 °FPressure 1.10 psigSuperimposed Backpressure 0.00 psigMass Flow Rate 896.36 lb/hDischarge coe cient, Kd 1.000Outputs:Final Phase VAPORRequired Flow Area 1.335 in²

RELIEF CAPACITY COMMENTS - EMR-87003 PIPING

The Pipes Containing Vapor model is used to quan fy the capacity of the relief vent in the event of control valve PV-8685 wide open.

The inlet temperature (nozzle inlet Temperature) is based on the normal opera ng temperature.

The inlet pressure (nozzle inlet Pressure) is the relief pressure of the emergency vent.

The backpressure (Surroundings/Back Pressure) is 0 psig since the vent discharges to atmosphere.

The uid composi on is nitrogen, with uid proper es obtained from SuperChems.

RELIEF CAPACITY - EMR-87003 PIPINGRelief Condi ons:Temperature 80.00 °FPressure 1.10 psigSuperimposed backpressure 0.00 psigExit Condi ons:Exit Temperature 69.00 °F


EMR-87003_T-87003.cor January 28, 2014

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77 degF

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Exit Pressure 0.00 psigExit Mach Number 0.32Pressure at device inlet 0.00 psigBackpressure 0.00 psigVapor Mass Flow Rate 5,828.88 lb/hVolumetric Flow Rate 78,914.94 SCFHRelief Device Flow Area 28.8902 in²

Vibra on Risk Analysis (IEC Acous c E ciency Used)Segment #, Type, Name D/t Maximum SPL

dBLimit SPL

dBSPL Di erence

dBVibra on Risk?

001, Pressure Relief Valve (ori ce), EMR-87003 21.66 133.75 172.93 -39.18 Not Likely

Sound Power Level Pro leIEC acous c e ciency used

Max SPL, dB SPL Limit, dB

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0 0.001 0.002 0.003 0.004 0.005 0.006

Axis Distance,

RELIEF STREAM DATAComponent Chemical Formula Mass Frac on Mole Frac on Molecular WeightNITROGEN N2 1.0000 1.0000 28.01


EMR-87003_T-87003.cor January 28, 2014

emr-87003 t-87003 full - reviewed

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