d j a inspection services, inc. - integrated · pdf filed j a inspection services, inc....

D J A INSPECTION SERVICES, INC. Storage Tank Management & Inspection

814-676-3663 P. O. Box 384 Reno, PA 16343 661-363-5453 P. O. Box 544 Edison, CA 93220

PORT OIL PORTLAND, CT

Tank #3

Date of Out - of - Service Inspection: September 3, 2010

Inspector: COLLIN GORDON API Certificate #34922 STI Certificate #AC 19910 Copies: Port Oil – 3 File - 1

Dependable • Judicious • Affordable

DJA Inspection Service, Inc. Purpose

This report is given to enable one to assess the serviceability of this tank. The report is of an API-653 inspection made by DJA InspectionServices, Inc. It is the mission of DJA Inspection Services to provide full service tank inspections to the storage tank industry, to be known for quality and detailed inspections through the dedication and experience of our team and to provide the service worldwide as well as to the individual tank owner. DJA obtains this through the use of proper instrumentation, equipment, and trained inspectors. DJA also insists on its minimum inspection requirements being fulfilled even if they exceed the customer’s request. With DJA, the report content and context is weighted heavily in all inspections. DJA intends to provide this service at a reasonable rate and provide reports in a timely manner.

SUMMARY/RECOMMENDATIONS

Recommendations found in this report made by DJA Inspection Services, Inc. are for report purposes only. Actual repair needs are to be determined and designed by the tank owner after review of the entire report.

MISSION STATEMENT “It is the mission of DJA Inspection Services, Inc. to provide full service tank inspections to the storage tank industry, to be known for quality and detailed inspections through the dedication and experience of our team and to provide the service worldwide as well as to the individual tank owner.”

PORT OILPORTLAND, CT

TANK #3

Out-of-Service Inspection of 09/03/2010

Summary:

CONTAINMENT AREA - The visual inspection of the concrete walls found minor cracks. The cracks need to be sealed to stop product in the event of a tank failure. The base is mostlysoil with stone and asphalt covering the soil. The containment area has poor drainage awayfrom the tank. The containment base should be lowered to improved the drainage.

FOUNDATION - The tank is on a soil foundation. The foundation has no berm. The tank isapproximately 8" below the surrounding grade. The foundation material has allowed the tankto have significant settlement.

LEAK DETECTION - None.

SECONDARY CONTAINMENT - None.

SETTLEMENT SURVEYS - An out-of-plane settlement survey and an edge settlementsurvey were performed on the tank. Both are within the acceptable limits per API-653.

FIXED ROOF - The steel cone roof was visually inspected and thickness readings were taken. The visual inspection found the center vent does not have a screen. The gauge hatch does nothave a seal. The ultrasound thickness readings found no serious conditions.

SHELL - The visual inspection found an external belly band patch has been installed aroundthe bottom 1' of the shell. The belly band does not meet API guidelines for length or weldspacing. The ultrasound thickness readings found corrosion losses on the bottom shell course. Due to corrosion rate and remaining corrosion allowance of the first shell course, themaximum facility fill height (33' 1") should be lowered to 24.65', which facilitates enoughremaining corrosion allowance for a 5.0 year next in-service inspection interval per API-653(this calculation is for the current product, #2 fuel oil, specific gravity = .910). At a gravity of1.0 (water), the facility fill height would need to be lowered to 22.45' for a 5.0 year next in-service inspection interval per API-653.

NOZZLES - The nozzles were visually inspected and thickness readings were taken. Thevisual inspection found the nozzle reinforcement pads do not have tell-tale holes installed. The ultrasound thickness readings found no serious conditions.

CHIME - The chime is partially covered by the belly band patch on the shell. The chime hasno signs of significant corrosion, so the chime does not require repair at this time. The ownershould be aware that, if the chime was corroded beyond the belly band weld that repair wouldbe required.

BOTTOM - The bottom was visually inspected, thickness readings were taken, and an MFEbottom scan was performed. The MFE bottom scan found 5 soilside pits ranging from .127"to .230" remaining wall thickness. The inspection was limited due to product and scale on thebottom. The visual inspection found the center column is 1.5" off the bottom, and has nobearing plate or horizontal restraints.

MFE SCANNER - Magnetic Flux Leakage Examination Scanner is set up using MFEEnterprises function test plate. The test plate is 0.25" thickness with two simulated flaws. Flaw #1 is a 3/16" diameter hole and Flaw #2 is a ½" diameter simulated soilside pit stair-stepped to 40% wall loss. The unit is then adjusted to bottom actual thickness with coating, ifpresent.

EXTERNAL DETERIORATION PROTECTION - The shell has active corrosion at thechime and belly band patch.

BRITTLE FRACTURE - A hydrostatic test should be performed if the tank is going to changeservice.

CATHODIC PROTECTION - Not installed.

OVERFILL PREVENTION - Installed; an auto gauge and an electronic gauge.

PIPING - Not inspected.


TANK #3


Recommendations:

1. Seal the large containment wall cracks.

2. Repair the 5 soilside pits on the bottom.

3. Install a pad under the center column with restraints.

4. Lengthen the center column to reach the bottom.

5. Install a screen in the roof vent.

6. If there is a product change, perform a hydrostatic test.

7. Attach the grounding.

8. Due to corrosion rate and remaining corrosion allowance of the first shell course, themaximum facility fill height (33' 1") should be lowered to 24.65', which facilitates enoughremaining corrosion allowance for a 5.0 year next in-service inspection interval per API-653(this calculation is for the current product, #2 fuel oil, specific gravity = .910). At a gravity of1.0 (water), the facility fill height would need to be lowered to 22.45' for a 5.0 year next in-service inspection interval per API-653.


TANK #3


Suggestions:

1. Lower the containment base and improve drainage away from the tank.

2. Level the tank.

3. Install a seal in the gauge hatch.

4. Blast the chime and belly band, and repaint.

5. Install a foundation berm after the containment base is lowered.

Procedures

THICKNESS TESTING - Thickness readings were obtained by the use of an ultrasonicthickness tester. The calibration was checked before starting each day of inspection.

LEVEL AND SETTLEMENT SURVEY - The settlement and / or levelness of the tankfoundation was determined with the use of transit level and measuring rod.

ROOF LAYOUT - Roof plates were measured with a measuring wheel and reports are to scale. The roof was visually inspected and thickness readings were taken.

BOTTOM LAYOUT - Bottom plates were measured with a measuring wheel and reports areto scale. The bottom was visually inspected and thickness readings were taken.

NOZZLE LAYOUT - Nozzles were measured as to an X,Y, coordinate in relationship to theshell plate in which they are located. The nozzles size is listed as well as identified by a letter. The nozzles were inspected visually from the internal side of the tank and thicknessmeasurements were obtained by the use of an ultrasonic thickness tester.

PIT MEASUREMENT - Pit depth was measured with the use of a pit gauge.

VISUAL - A visual inspection was made of the tank and its components. Internal inspectionwas aided by the use of a flashlight being held parallel to the tank’s surface.

MAGNETIC FLUX LEAKAGE - The floor was scanned for topside and soilside pitting usinga magnetic flux leakage tester.

SPREADSHEETS


Tank Data Summary

Customer : PORT OIL Location : PORTLAND, CTTank # : 3 Serial # : UNAVAILABLEManufacturer : CBI Year Built : 1934Tank Description : LAP WELDED Diameter : 35.00 feetProduct : #2 FUEL OIL Height : 37.90 feetCode : UNKNOWN Design Capacity : 272,800 galProduct Specific Grav. : 0.910 6500 bbl

Maximum Filling Height Used by Facility : 24.65 feetCalculated Filling Height Using S.G.: 26.03 feet

Is vessel on original location? : YVessel drawings? : N Normal Venting Evaluation:Is vessel modified? : NAny previous inspection records? : N Venting, Sq in :Any maintenance records? : N Fill openings, Sq in :Any weld examination records? : N Outlets, Sq in :Any leak test records? : NAny mill test records? : N

Pressure, operating/design (psig) : ATMOS./UNKNOWNTemperature, operating/design (°F) : AMBIENT/UNKNOWN

Shell Material Spec : UNKNOWN

Roof type : STEEL CONEFloating roof? : NIf so, description : NONEType of seals :

Primary : NONESecondary : NONE

Floating Roof access? :If so, description : NONE

Bottom construction : CONE UPSecond bottom? : Y Flow Rates :If so, year installed : 1990 Max Flow Rate: UNKNOWNExternal finish : BLUE PAINT Current Flow Rate: UNKNOWNInternal lining : NInsulation type : NA

Date of Inspection Date Taken: 9/3/2010

Tank #: 3Client: PORT OILLocation: PORTLAND, CT Original thicknesses of Shell and Nozzles are assumed for calculations.

In-Service Out-of-Service In-Service Out-of-ServiceRemaining Remaining Inspection Inspection Inspection Inspection

Minimum Inspection Corrosion Corrosion Corrosion Date Based Date Based Date Based Date BasedItem Thickness Date Thickness Date Rate Allowance Life in Days on ¼ Life on ½ Life on 5 Years on 20 Years

Roof 0.188 1/1/1934 0.173 9/3/2010 5E-07 0.083 160298.7586 23-May-2120 11-Feb-2230 3-Sep-2015 3-Sep-2030

Shell Course 1 0.313 1/1/1934 0.261 9/3/2010 1.83902E-06 0.014 7515.369119 25-Oct-2015 16-Dec-2020 3-Sep-2015 3-Sep-2030Shell Course 2 0.250 1/1/1934 0.235 9/3/2010 5.35638E-07 0.051 95203.31387 1-Nov-2075 31-Dec-2140 3-Sep-2015 3-Sep-2030Shell Course 3 0.250 1/1/1934 0.251 9/3/2010 1E-105 0.141 1.4118E+104 ############### ############### 3-Sep-2015 3-Sep-2030Shell Course 4 0.250 1/1/1934 0.250 9/3/2010 1E-105 0.150 1.5E+104 ############### ############### 3-Sep-2015 3-Sep-2030Shell Course 5 0.250 1/1/1934 0.248 9/3/2010 7.14184E-08 0.148 2072296 10-Feb-3429 20-Jul-4847 3-Sep-2015 3-Sep-2030Shell Course 6 0.250 1/1/1934 0.245 9/3/2010 1.78546E-07 0.145 812116 19-Jul-2566 4-Jun-3122 3-Sep-2015 3-Sep-2030

Bottom 9/3/2010 3-Sep-2030

Nozzle A - 20 " 0.469 1/1/1934 0.442 9/3/2010 9.55221E-07 0.342 358032.4486 27-Sep-2255 20-Oct-2500 3-Sep-2015 3-Sep-2030Nozzle B - 2 " 0.313 1/1/1934 0.297 9/3/2010 5.53492E-07 0.197 355921.8065 17-Apr-2254 28-Nov-2497 3-Sep-2015 3-Sep-2030Nozzle C - 6 " 0.625 1/1/1934 0.613 9/3/2010 4.2851E-07 0.513 1197171 8-Feb-2830 17-Jul-3649 3-Sep-2015 3-Sep-2030Nozzle D - 6 " 0.625 1/1/1934 0.613 9/3/2010 4.2851E-07 0.513 1197171 8-Feb-2830 17-Jul-3649 3-Sep-2015 3-Sep-2030Nozzle E - 1 " 0.179 1/1/1934 0.165 9/3/2010 4.99929E-07 0.065 130018.5714 31-Aug-2099 29-Aug-2188 3-Sep-2015 3-Sep-2030Nozzle F - 5 " 0.500 1/1/1934 0.530 9/3/2010 1E-105 0.430 4.3E+104 ############### ############### 3-Sep-2015 3-Sep-2030

Remaining Service Life of Tank Bottom based on API-653 Section 4.4.7and allowable minimum bottom thicknesses.Tank #: 3Client: PORT OILLocation: PORTLAND, CT

Formula: OR1 = RTip - MRTStPr+UPr

OR2 = RTbc - MRTStPr+UPr

See API-653 Section 2.4.7 for definitions. After Repair

Bottom lined (Y/N): N NLiner > 50 mils thickness(Y/N): N NLeak detection (Y/N): N NSecondary containment (Y/N): N NCathodic protection (Y/N): N NAge of bottom 20.0 yearsOriginal thickness 0.250 inchesMeasured min avg thickness 0.250 inches

StPm, max internal pit depth 0.059 inches 0.059 inches

Are these values corrected to original tank bottom (Y/N): Y

UPm, max underside pit depth 0.019 inches

0.10 inches

StPr = 0.0030 inches/year

UPr = 0.0010 inches/year

Overall corrosion rate = 0.0039 inches/year

Calculated remaining service life :After Repair:Or1 : Exceeds 20 year inspection interval requirement.Or2 : Exceeds 20 year inspection interval requirement.

RTbc = minimum remaining thickness from bottom side corrosion after repairsRTip = minimum remaining thickness from internal corrosion after repairsStPr = maximum rate of corrosion not repaired on the top side. StPr = 0 for coated areas of the bottom. The expected life of the coating must equal or exceed the next inspection interval to use StPr = 0.UPr = maximum rate of corrosion on the bottom side.

See API-653 Sections 4.3.3 and 4.3.4 Data taken: 9/3/2010

Tank No. : 3 Course Ht, FTClient : PORT OIL 1 6.30

Location : PORTLAND, CT 2 6.303 6.30

TANK DIAMETER, D : 35.00 FT 4 6.30SHELL HEIGHT : 37.90 FT 5 6.30FACILITY FILL HT : 24.65 FT 6 6.40G, PRODUCT SP. GRAV.: 0.910 (water = 1.0) 7Y, YIELD STRENGTH : 30,000 PSI 8T, TENSILE STRNGTH: 55,000 PSI 9JOINT TYPE : LAP 10

E, JOINT EFFICIENCY: PER CODE OR USE DESIGN VALUE1.0 FOR CORRODED PLATE CALC.

t, MINIMUM MEASURED SHELL THICKNESS, INCHESS, MAXIMUM ALLOWABLE STRESS, PSI COURSE 1-2: 23,595 PSI (SMALLER OF 0.80Y OR 0.429T) COURSE 3-11: 25,960 PSI (SMALLER OF 0.88Y OR 0.472T)RCA, REMAINING CORROSION ALLOWANCE, INCHESREQUIRED THICKNESS FORMULA FROM API-653 t = {2.6D(H)G}/{SE} OR, REARRANGING TERMS: H = {t(SE)/(2.6DG)}SHELL READINGS, CONSTRUCTION, AND RESULTS

FILL HEIGHTS, FTSHELL MIN. AVG. RCA, JOINT JOINT (BASED ON S.G. = 0.910 )

COURSE THK, IN THK, IN in. EFF. , E TYPE ALLOW'D CAL'D1 0.261 0.270 0.014 35% LAP 26.03 26.032 0.235 0.246 0.051 35% LAP 29.74 29.743 0.251 0.254 0.141 35% LAP 37.90 40.144 0.250 0.254 0.150 35% LAP 37.90 46.335 0.248 0.251 0.148 35% LAP 37.90 52.416 0.245 0.249 0.145 35% LAP 37.90 58.38

Controlling fill height based on product S. G. is 26.03 for Shell Course 1 (Fill ht based on S.G.=1.0 is 23.69 ft).RCA based on Facility FIll Ht and Product S.G.

Nozzle Reinforcement Calcs

See API-653 Section 8.5Tank #: 3 NOTE:Client: PORT OIL TThis column indicates whether the height of the nozzle meets theLocation: PORTLAND, CT present API-650 normal height requirement, but does not indicateTHE REINFORCING CROSS-SECTIONAL AREA ( X x Y) MUST BE LESS THAN THE FOLLOWING: whether it is in violation of API-653.(SEE NEXT PAGE FOR DEFINITIONS)

X(Y) < (A)(B-X) + (4)(T)(T)(2) + (2)(T)(Y)Reference Template NR-1

Size Sheet Re-pad X x Y Reinf Area Approv'd Nozz HtTag in. Service ID Tag X-Axis Y-Axis Top Left Btm Right Thk, in B, in X, in Y, in A, in T, in Sq. in. Sq. in. per API-653 per API-650A 20 MANWAY SC0101 4.4 2.60 0.449 0.445 0.442 0.443 0.487 31.2 20.0 0.26 0.49 0.44 5.22 7.25 YES YESB 2 WATER DRAW SC0102 6.6 0.40 0.297 2.4 0.27 0.00 0.65 Not Req'd ==NO==C 6 PRODUCT SC0102 9.0 1.20 0.613 0.616 0.614 0.614 0.613 12 6.6 0.27 0.61 0.61 1.81 6.64 YES YESD 6 PRODUCT SC0103 25.0 1.20 0.614 0.613 0.613 0.614 0.669 12 6.6 0.27 0.67 0.61 1.78 6.93 YES YESE 1 TI SC0104 1.6 5.30 0.165 1.3 0.27 0.00 0.36 Not Req'd YESF 5 PRODUCT SC0104 25.0 1.10 0.531 0.531 0.532 0.530 0.439 10.8 5.6 0.27 0.44 0.53 1.50 4.83 YES YESGHIJKLMNOPQRSTUVWXYZ

Co-ord., ft Nozzle Thick, inches

Nozzle Ht. Per API-650 column is for informational purposes only.

Nozzle Reinforcement Pad LayoutClient: PORT OILTank #: 3Location: PORTLAND, CT Reference Template RPT-1

Nozzle RepadLetter Type A B C D R

A 3 2.60C 3 1.00D 3 1.00F 3 0.90

Measurement Location-measurement in feet

Roof Plate Thickness Readings Readings in thousandths of an inchTank #: 3 Overall Min: 173 Data taken: Client: PORT OIL Overall Max: 185Location: PORTLAND, CT Overall Avg: 181.1 Reference Template RTR-1

Roof Point===> Plate Roof Point===> Plate Roof Point===> Plate Roof Point===> PlatePlate # 01 02 03 04 05 06 Type Plate # 01 02 03 04 05 06 Type Plate # 01 02 03 04 05 06 Type Plate # 01 02 03 04 05 06 Type

T-1 176 179 180 C T-31 T-61 T-91T-2 179 181 180 181 182 G T-32 T-62 T-92T-3 180 182 181 173 179 G T-33 T-63 T-93T-4 181 179 183 179 183 G T-34 T-64 T-94T-5 183 177 182 A T-35 T-65 T-95T-6 179 180 178 180 182 E T-36 T-66 T-96T-7 183 181 178 185 183 E T-37 T-67 T-97T-8 181 183 184 179 182 E T-38 T-68 T-98T-9 181 183 185 183 181 E T-39 T-69 T-99T-10 183 181 184 179 185 E T-40 T-70 T-100T-11 182 183 184 182 182 E T-41 T-71 T-101T-12 184 180 183 182 183 E T-42 T-72 T-102T-13 178 183 182 181 178 E T-43 T-73 T-103T-14 177 182 182 F T-44 T-74 T-104T-15 181 183 180 182 181 G T-45 T-75 T-105T-16 183 182 181 182 184 G T-46 T-76 T-106T-17 185 183 181 179 179 G T-47 T-77 T-107T-18 174 176 182 D T-48 T-78 T-108T-19 T-49 T-79 T-109T-20 T-50 T-80 T-110T-21 T-51 T-81 T-111T-22 T-52 T-82 T-112T-23 T-53 T-83 T-113T-24 T-54 T-84 T-114T-25 T-55 T-85 T-115T-26 T-56 T-86 T-116T-27 T-57 T-87 T-117T-28 T-58 T-88 T-118T-29 T-59 T-89 T-119T-30 T-60 T-90 T-120

9/3/10

Shell Vertical Thickness ReadingsTank #: 3 Reference TemplateClient: PORT OIL STV-1 or STVR-1Location: PORTLAND, CT Data taken:

Shell Drop Point No. V - ===> Readings in thousandths of an inchCourse No. 01 02 03 04 05 06 07 08 09 10 11SC-1 MAX: 286 MIN: 222 AVG: 270.3

1 227 283 286 284 283 281 2762 223 279 282 281 279 276 2653 222 278 283 285 284 284 2664 227 273 273 275 275 272 265

SC-2 MAX: 256 MIN: 235 AVG: 246.31 246 244 248 245 247 249 2532 244 246 252 251 256 252 2543 235 238 239 244 246 245 2464 242 243 245 246 248 249 243

SC-3 MAX: 257 MIN: 251 AVG: 253.71 252 251 253 257 256 254 253234

SC-4 MAX: 261 MIN: 250 AVG: 254.11 254 253 261 258 252 250 251234

SC-5 MAX: 255 MIN: 248 AVG: 250.91 250 252 249 248 251 255 251234

SC-6 MAX: 251 MIN: 245 AVG: 248.71 245 251 250 249 248 250 248234

9/3/2010

Shell Horizontal Thickness Readings Reference Template STR-1 or STR-2Tank #: 3Client: PORT OILLocation: PORTLAND, CT Data taken:

Shell Sht Point No.===> Readings in thousandths of an inchCourse No. 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35

SC-1 MAX = 296 MIN = 261 AVG = 277 1 271 275 273 275 276 277 276 275 266 261 2 273 275 277 282 279 277 280 275 276 275 3 268 268 273 277 279 279 277 284 274 273 4 278 277 270 288 289 296 290 283 286 284 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

9/3/2010

Bottom Plate Thickness Readings Readings in thousandths of an inchTank #: 3 Overall Min: 240 Data taken:Client: PORT OIL Overall Max: 267Location: PORTLAND, CT Overall Avg: 251.7 Reference Template AR-1, AR-2, BP-1, or BP-2

Btm Point===> Plate Btm Point===> Plate Btm Point===> Plate Btm Point===> PlatePlate No. 01 02 03 04 05 06 Type Plate No. 01 02 03 04 05 06 Type Plate No. 01 02 03 04 05 06 Type Plate No. 01 02 03 04 05 06 Type

B-1 264 258 253 C B-31 B-61 B-91B-2 255 254 255 A B-32 B-62 B-92B-3 267 264 261 263 258 E B-33 B-63 B-93B-4 241 240 242 248 257 E B-34 B-64 B-94B-5 261 250 248 252 253 E B-35 B-65 B-95B-6 244 246 247 250 248 E B-36 B-66 B-96B-7 245 248 250 243 244 E B-37 B-67 B-97B-8 251 250 249 252 255 E B-38 B-68 B-98B-9 253 251 252 254 256 E B-39 B-69 B-99B-10 246 253 245 248 254 E B-40 B-70 B-100B-11 254 249 250 F B-41 B-71 B-101B-12 256 255 248 D B-42 B-72 B-102B-13 B-43 B-73 B-103B-14 B-44 B-74 B-104B-15 B-45 B-75 B-105B-16 B-46 B-76 B-106B-17 B-47 B-77 B-107B-18 B-48 B-78 B-108B-19 B-49 B-79 B-109B-20 B-50 B-80 B-110B-21 B-51 B-81 B-111B-22 B-52 B-82 B-112B-23 B-53 B-83 B-113B-24 B-54 B-84 B-114B-25 B-55 B-85 B-115B-26 B-56 B-86 B-116B-27 B-57 B-87 B-117B-28 B-58 B-88 B-118B-29 B-59 B-89 B-119B-30 B-60 B-90 B-120

9/3/2010

Bottom Edge Thickness Readings Data Taken:Tank #: 3Client: PORT OILLocation: PORTLAND, CT Reference Template BER-1

Point No. E- Readings in thousandths of an inchPlate No. 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41

MAX = 279 MIN = 230 AVG = 262E-1 263 259 260 269 268 269 269 274 273 275 277 274 271 258 268 270 277 273 273 271 263 260 269 276 276 271 269 279E-2 274 261 276 258 264 258 234 241 238 241 241 230 252 244 252 250 238 262 266 266 246 258 248 256 247 263 269 268E-3 273 265 272 271 266 260 262 270 266 271 278 274 247 254 260 260 266 264 255 254 245 256 255 274 277 267 269 273E-4 278 279 263 275 278 264 273 254 267 258 249 231 243 247 262 261 265 264 250 260 265 264 259 255 254 262 269 267E-5E-6E-7E-8E-9E-10E-11E-12E-13E-14E-15E-16E-17E-18E-19E-20E-21E-22E-23E-24E-25E-26E-27E-28E-29E-30

Note: Readings taken approximately 2" from tank edge adjacent to shell sheets. E-1, E-2, ... E-max correspond to shell course sheets.

9/3/2010

Btm Edge Data Pg 1

Bottom Pitting Layout If you can not locate the respective pit, can not read a number, or do NOTE::Tank #: 3 not understand something on this page, please contact a DJAClient: PORT OIL representative. - 814-676-3663 or 661-363-5453 an inch.

Reference Template BPO-1Remaining Wall Pit In Critical Remaining Wall Pit In Critical

Sheet # Thickness Depth X Y Zone Sheet # Thickness Depth X Y Zone2 127 -1.60 6.50 N2 175 -2.50 6.00 N2 187 -2.80 6.30 N5 185 -4.90 3.80 N

11 230 5.00 -4.60 N

Remaining Wall Thickness (Soilside Pitting) andPit Depth (Topside Pitting) are in thousandths of

CORRECTED DATA - Readings in feet. NOTE: Elevations are based on lowest station

Tank #: 3 point at the shell being 0.00'Tank Dia: 35 ftMax Reading: 3.36 ft at edge, used to correct data

Distance across tank from edge ==> seam shell

1 0.302 0.153 0.024 0.005 0.116 0.277 0.428 0.429

101112131415161718192021222324

Data taken: Description of Benchmark :Elevation on Benchmark :

9/3/2010

Out-of-Plane Edge Deflection Analysis - API-653 Appendix BTank No.: 3Formula for Out-of-Plane Deflection: |S| < or = (L² x Y x 11) / [2(E x H) ]Where:S = deflection, in feetL = arc length, in feet 0.016 feet = 0.19 inchesY = yield strength, in psi L: 13.7 feetE = Young's modulus, in psi Y: 30,000 psiH = tank height, in feet E: 29.5 x 10^6 psi

H: 37.90 feetS allow: 0.028 feet

Out-of-Plane edge settlement is acceptable per API-653.Planar Tilt = 0.42'

Sequence Equiv. Data Cos AveragedNo. Station Angle, deg feet Curve Diff. Diff.

0 4 0 0.000 -0.007 -0.007 0.0051 5 45 0.110 0.106 -0.004 0.0062 6 90 0.270 0.280 0.010 0.0153 7 135 0.420 0.413 -0.007 0.0164 8 180 0.420 0.427 0.007 0.0045 1 225 0.300 0.314 0.014 0.0166 2 270 0.150 0.140 -0.010 0.0107 3 315 0.020 0.007 -0.013 0.0048 4 360 0.000 -0.007 -0.007 0.001

Out-of-Plane Edge Deflection

-0.050

0.000

0.050

0.100

0.150

0.200

0.250

0.300

0.350

0.400

0.450

4 5 6 7 8 1 2 3 4

Station No.

Dis

tanc

e ab

ove

low

poi

nt, f

t.

Measured DataCosine Curve

EDGE SETTLEMENT CALCULATIONS SIDE 1Calculations per API Standard 653 Section B.3.4

TANK #: 3CLIENT: PORT OIL

LOCATION: PORTLAND, CTReference Templates ES-1 and ED-1

Bottom Radius Edge B2 Center Tank Angle of B in B ConditionWeld of Bend Elevation Elevation Elevation Diameter Weld to Tank Inches Allowable

Reading Reading Reading RadiusA WELD 2 5.48 5.47 5.84 34.80 42 0.49 2.00 Edge Settlement is AcceptableB WELD 2 5.58 5.55 5.84 34.80 12 0.45 2.00 Edge Settlement is AcceptableC WELD 1 5.68 5.7 5.84 34.80 12 -0.22 2.00 Edge Settlement is AcceptableD WELD 1 5.76 5.78 5.84 34.80 39 -0.21 2.00 Edge Settlement is Acceptable

EDGE SETTLEMENT CALCULATIONS SIDE 2Calculations per API Standard 653 Seciton B.3.4


LOCATION: PORTLAND, CTReference Templates ES-1 and ED-1

Bottom Radius Edge B2 Center Tank Angle of B in B ConditionWeld of Bend Elevation Elevation Elevation Diameter Weld to Tank Inches Allowable

Reading Reading Reading RadiusA WELD 3 5.84 5.69 5.84 34.80 46 2.05 2.13 Edge Settlement is AcceptableB WELD 2 5.68 5.63 5.84 34.80 12 0.66 2.00 Edge Settlement is AcceptableC WELD 1 5.53 5.58 5.84 34.80 12 -0.56 2.00 Edge Settlement is AcceptableD WELD 1 5.38 5.45 5.84 34.80 39 -0.66 2.00 Edge Settlement is Acceptable

EDGE SETTLEMENT CALCULATIONS Calculations per API Standard 653 Section B.3.4


LOCATION: PORTLAND, CT

"A" Edge Calculations Reference Templates ES-1 and ED-1Bottom Radius Edge B2 Center Tank Angle of B in B ConditionWeld of Bend Elevation Elevation Elevation Diameter Weld to Tank Inches Allowable

Reading Reading Reading RadiusWELD A1 2 5.34 5.41 5.84 34.80 0 -0.84 2.00 Edge Settlement is Acceptable

"Last Row" Edge CalculationsBottom Radius Edge B2 Center Tank Angle of B in B ConditionWeld of Bend Elevation Elevation Elevation Diameter Weld to Tank Inches Allowable

Reading Reading Reading RadiusWELD LR1 3 5.88 5.82 5.84 34.80 0 0.72 2.41 Edge Settlement is Acceptable

TEMPLATES

For Templates, Please refer to Templates File


DRAWINGS


PHOTOS


CERTIFICATION

For Certifications, Please refer to Inspector Certification File


RAW DATA

Hand written field obtain data will be available upon request.


d j a inspection services, inc. - integrated · pdf filed j a inspection services, inc....

Documents