DJA Report Port Oil Tank 3

7/26/2019 DJA Report Port Oil Tank 3

1/49

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 GORDONAPI Certificate #34922STI Certificate #AC 19910

Copies: Port Oil 3File - 1

Dependable Judicious ffordable


2/49

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 madeby DJA Inspection

Services, Inc.

It is the missionof DJA Inspection Servicesto 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 customers 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.


3/49

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 tothe storage tank industry, to be known for quality and detailed inspections throughthe dedication and experience of our team and to provide the service worldwide aswell as to the individual tank owner.


4/49

PORT OIL

PORTLAND, 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 mostly

soil with stone and asphalt covering the soil. The containment area has poor drainage away

from 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 is

approximately 8" below the surrounding grade. The foundation material has allowed the tank

to have significant settlement.

LEAK DETECTION - None.

SECONDARY CONTAINMENT - None.

SETTLEMENT SURVEYS - An out-of-plane settlement survey and an edge settlement

survey 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 not

have a seal. The ultrasound thickness readings found no serious conditions.

SHELL - The visual inspection found an external belly band patch has been installed around

the bottom 1' of the shell. The belly band does not meet API guidelines for length or weld

spacing. 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, the

maximum facility fill height (33' 1") should be lowered to 24.65', which facilitates enough

remaining 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 of

1.0 (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. The

visual 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 has

no signs of significant corrosion, so the chime does not require repair at this time. The owner

should be aware that, if the chime was corroded beyond the belly band weld that repair would

be required.


5/49

BOTTOM - The bottom was visually inspected, thickness readings were taken, and an MFE

bottom 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 the

bottom. The visual inspection found the center column is 1.5" off the bottom, and has no

bearing plate or horizontal restraints.

MFE SCANNER - Magnetic Flux Leakage Examination Scanner is set up using MFE

Enterprises 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 " diameter simulated soilside pit stair-

stepped to 40% wall loss. The unit is then adjusted to bottom actual thickness with coating, if

present.

EXTERNAL DETERIORATION PROTECTION - The shell has active corrosion at the

chime and belly band patch.

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

service.

CATHODIC PROTECTION - Not installed.

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

PIPING - Not inspected.


6/49

PORT OIL

PORTLAND, CT

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, the

maximum facility fill height (33' 1") should be lowered to 24.65', which facilitates enough

remaining 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 of

1.0 (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.


7/49

PORT OIL

PORTLAND, CT

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.


8/49

Procedures

THICKNESS TESTING - Thickness readings were obtained by the use of an ultrasonic

thickness 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 are

to 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 the

shell 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 inspection

was aided by the use of a flashlight being held parallel to the tanks surface.

MAGNETIC FLUX LEAKAGE - The floor was scanned for topside and soilside pitting using

a magnetic flux leakage tester.


9/49

SPREADSHEETS

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 throughthe dedication and experience of our team and to provide the service worldwide aswell as to the individual tank owner.


10/49

Tank Data Summary

Customer : PORT OIL Location : PORTLAND, CT

Tank # : 3 Serial # : UNAVAILABLE

Manufacturer : CBI Year Built : 1934

Tank Description : LAP WELDED Diameter : 35.00 feet

Product : #2 FUEL OIL Height : 37.90 feet

Code : UNKNOWN Design Capacity : 272,800 gal

Product Specific Grav. : 0.910 6500 bbl

Maximum Filling Height Used by Facility : 24.65 feet

Calculated Filling Height Using S.G.: 26.03 feet

Is vessel on original location? : Y

Vessel drawings? : N Normal Venting Evaluation:

Is vessel modified? : N

Any previous inspecti on records? : N Venting, Sq in :

Any mai ntenance records? : N Fill openings, Sq in :

Any weld exami nat ion records? : N Outlets, Sq in :

Any leak tes t records? : N

Any mi ll test records? : N

Pressure, operating/design (psig) : ATMOS./UNKNOWN

Temperature, operating/design (F) : AMBIENT/UNKNOWN

Shell Material Spec : UNKNOWN

Roof type : STEEL CONE

Floating roof? : N

If so, description : NONE

Type of seals :

Primary : NONE

Secondary : NONE

Floating Roof access? :

If so, description : NONE

Bottom construction : CONE UP

Second bottom? : Y Flow Rates :

If so, year installed : 1990 Max Flow Rate: UNKNOWN

External finish : BLUE PAINT Current Flow Rate: UNKNOWN

Internal lining : N

Insulation type : NA


11/49

Date of Inspectio n

Tank #: 3

Client: PORT OIL

Location: PORTLAND, CT Original thicknesses of Shell and Nozzles are assumed for calculations.

In -Servi ce Ou t-o f-Servi ce

Remaining Remaining Inspection Inspection

Minimum Inspection Corrosion Corrosion Corrosion Date Based Date Based

Item Thickness Date Thickness Date Rate Allowance Life in Days on Life on Life

Roof 0.188 1/1/1934 0.173 9/3/2010 5E-07 0.083 160298.7586 23-May -2120 11-Feb -22

Shell Course 1 0.313 1/1/1934 0.261 9/3/2010 1.83902E-06 0.014 7515.369119 25-Oc t-2015 16-Dec -20

Shell Course 2 0.250 1/1/1934 0.235 9/3/2010 5.35638E-07 0.051 95203.31387 1-Nov-2075 31-Dec -21

Shell Course 3 0.250 1/1/1934 0.251 9/3/2010 1E-105 0.141 1.4118E+104############### #############

Shell Course 4 0.250 1/1/1934 0.250 9/3/2010 1E-105 0.150 1.5E+104############### #############

Shell Course 5 0.250 1/1/1934 0.248 9/3/2010 7.14184E-08 0.148 2072296 10-Feb -3429 20-Jul -48

Shell Course 6 0.250 1/1/1934 0.245 9/3/2010 1.78546E-07 0.145 812116 19-Ju l-2566 4-Jun -31

Bottom 9/3/2010 3-Sep-20

Nozzle A - 20 " 0.469 1/1/1934 0.442 9/3/2010 9.55221E-07 0.342 358032.4486 27-Sep -2255 20-Oc t-25

Nozzle B - 2 " 0.313 1/1/1934 0.297 9/3/2010 5.53492E-07 0.197 355921.8065 17-Apr -2254 28-Nov-24

Nozzle C - 6 " 0.625 1/1/1934 0.613 9/3/2010 4.2851E-07 0.513 1197171 8-Feb -2830 17-Jul -36

Nozzle D - 6 " 0.625 1/1/1934 0.613 9/3/2010 4.2851E-07 0.513 1197171 8-Feb -2830 17-Jul -36

Nozzle E - 1 " 0.179 1/1/1934 0.165 9/3/2010 4.99929E-07 0.065 130018.5714 31-Aug -2099 29-Aug -21

Nozzle F - 5 " 0.500 1/1/1934 0.530 9/3/2010 1E-105 0.430 4.3E+104############### #############


12/49

Remaining Service Life of Tank Bottom based on API-653 Section 4.4.7

and allowable minimum bottom thicknesses.

Tank #: 3

Client: PORT OIL

Location: PORTLAND, CT

Formula: OR1 = RTip - MRT

StPr+UPr

OR2 = RTbc - MRT

StPr+UPr

See API-653 Section 2.4.7 for definitions. After Repair

Bottom lined (Y/N): N N

Liner > 50 mils thickness(Y/N): N N

Leak detection (Y/N): N N

Secondary containment (Y/N): N N

Cathodic protection (Y/N): N N

Age of bottom 20.0 years

Original thickness 0.250 inches

Measured 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 :

Aft er Repai r:

Or1 : Exceeds 20 year inspection interval requirement.

Or2 : Exceeds 20 year inspection interval requirement.

RTbc = minimum remaining thickness from bottom side corrosion after repairs

RTip = minimum remaining thickness from internal corrosion after repairs

StPr = 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.


13/49

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

Tank No. : 3 Course Ht, FT

Client : PORT OIL 1 6.30

Location : PORTLAND, CT 2 6.30

3 6.30

TANK DIAMETER, D : 35.00 FT 4 6.30

SHELL HEIGHT : 37.90 FT 5 6.30

FACILITY FILL HT : 24.65 FT 6 6.40

G, PRODUCT SP. GRAV.: 0.910 (water = 1.0) 7

Y, YIELD STRENGTH : 30,000 PSI 8T, TENSILE STRNGTH: 55,000 PSI 9

JOINT TYPE : LAP 10

E, JOINT EFFICIENCY: PER CODE OR USE DESIGN VALUE

1.0 FOR CORRODED PLATE CALC.

t, MINIMUM MEASURED SHELL THICKNESS, INCHES

S, 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, INCHES

REQUIRED 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, FT

SHELL MIN. AVG. RCA, JOINT JOINT (BASED ON S.G. = 0.910 )

COURSE THK, IN THK, IN in. EFF. , E TYPE ALLOW'D CAL'D

1 0.261 0.270 0.014 35% LAP 26.03 26.03

2 0.235 0.246 0.051 35% LAP 29.74 29.74

3 0.251 0.254 0.141 35% LAP 37.90 40.14

4 0.250 0.254 0.150 35% LAP 37.90 46.33

5 0.248 0.251 0.148 35% LAP 37.90 52.41

6 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.


14/49

Nozzle Reinforcement Calcs

See API-653 Section 8.5

Tank #: 3 NOTE:

Client: PORT OIL This column indicates whether the

Location: PORTLAND, CT present API-650 normal height req

THE 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)

Size Sheet Re-pad X x Y

Tag 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.

A 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

B 2 WATER DRAW SC0102 6.6 0.40 0.297 2.4 0.27 0.00 0.65

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

D 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

E 1 TI SC0104 1.6 5.30 0.165 1.3 0.27 0.00 0.36

F 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

G

H

I

J

K

L

M

NO

P

Q

R

S

T

U

V

W

X

Y

Z

Co-ord., ft Nozzle Thick, inches

Nozzle Ht. Per API-650 column is


15/49

Nozzle Reinforcement Pad Layout

Client: PORT OIL

Tank #: 3

Location: PORTLAND, CT Reference Template RPT-1Nozzle Repad

Letter Type A B C D R

A 3 2.60

C 3 1.00

D 3 1.00

F 3 0.90

Measurement Location-measurement in feet


16/49

Roof Plate Thickness Readings Readings in thTank #: 3 Overall Min: 173 Data taken:

Client: PORT OIL Overall Max: 185

Location: PORTLAND, CT Overall Avg: 181.1

Roof Point===> Plate Roof Point===> Plate Roof Point===> Plate Roof Po

Plate # 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

T-1 176 179 180 C T-31 T-61 T-91

T-2 179 181 180 181 182 G T-32 T-62 T-92

T-3 180 182 181 173 179 G T-33 T-63 T-93

T-4 181 179 183 179 183 G T-34 T-64 T-94

T-5 183 177 182 A T-35 T-65 T-95

T-6 179 180 178 180 182 E T-36 T-66 T-96

T-7 183 181 178 185 183 E T-37 T-67 T-97

T-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-99

T-10 183 181 184 179 185 E T-40 T-70 T-100

T-11 182 183 184 182 182 E T-41 T-71 T-101

T-12 184 180 183 182 183 E T-42 T-72 T-102

T-13 178 183 182 181 178 E T-43 T-73 T-103

T-14 177 182 182 F T-44 T-74 T-104

T-15 181 183 180 182 181 G T-45 T-75 T-105

T-16 183 182 181 182 184 G T-46 T-76 T-106

T-17 185 183 181 179 179 G T-47 T-77 T-107

T-18 174 176 182 D T-48 T-78 T-108

T-19 T-49 T-79 T-109

T-20 T-50 T-80 T-110

T-21 T-51 T-81 T-111

T-22 T-52 T-82 T-112

T-23 T-53 T-83 T-113

T-24 T-54 T-84 T-114

T-25 T-55 T-85 T-115T-26 T-56 T-86 T-116

T-27 T-57 T-87 T-117

T-28 T-58 T-88 T-118

T-29 T-59 T-89 T-119

T-30 T-60 T-90 T-120


17/49

Shell Vertical Thickness Readings

Tank #: 3 Reference Template

Client: PORT OIL STV-1 or STVR-1

Location: PORTLAND, CT Data taken:Shell Drop Point No. V - ===> Readings in thousandths of an inch

Course No. 01 02 03 04 05 06 07 08 09 10 11

SC-1 MAX: 286 MIN: 222 AVG: 270.3

1 227 283 286 284 283 281 276

2 223 279 282 281 279 276 265

3 222 278 283 285 284 284 2664 227 273 273 275 275 272 265

SC-2 MAX: 256 MIN: 235 AVG: 246.3

1 246 244 248 245 247 249 253

2 244 246 252 251 256 252 254

3 235 238 239 244 246 245 246

4 242 243 245 246 248 249 243

SC-3 MAX: 257 MIN: 251 AVG: 253.7

1 252 251 253 257 256 254 253

2

3

4

SC-4 MAX: 261 MIN: 250 AVG: 254.11 254 253 261 258 252 250 251

2

3

4

SC-5 MAX: 255 MIN: 248 AVG: 250.9

1 250 252 249 248 251 255 251

2

3

4

SC-6 MAX: 251 MIN: 245 AVG: 248.7

1 245 251 250 249 248 250 248

23

4

9/3/2010


18/49

Shell Horizontal Thickness Readings

Tank #: 3

Client: PORT OIL

Location: PORTLAND, CTShell Sht Point No.===> Readings in thousandths of an inch

Course 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 26SC-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

78

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30


19/49

Bottom Plate Thickness Readings ReaTank #: 3 Overall Min: 240 Data

Client: PORT OIL Overall Max: 267

Location: PORTLAND, CT Overall Avg: 251.7

Btm Point===> Plate Btm Point===> Plate Btm Point===> Plate B

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 Plat

B-1 264 258 253 C B-31 B-61 B-91

B-2 255 254 255 A B-32 B-62 B-92

B-3 267 264 261 263 258 E B-33 B-63 B-93

B-4 241 240 242 248 257 E B-34 B-64 B-94

B-5 261 250 248 252 253 E B-35 B-65 B-95

B-6 244 246 247 250 248 E B-36 B-66 B-96

B-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-98

B-9 253 251 252 254 256 E B-39 B-69 B-99

B-10 246 253 245 248 254 E B-40 B-70 B-100

B-11 254 249 250 F B-41 B-71 B-101

B-12 256 255 248 D B-42 B-72 B-102

B-13 B-43 B-73 B-103

B-14 B-44 B-74 B-104

B-15 B-45 B-75 B-105

B-16 B-46 B-76 B-106

B-17 B-47 B-77 B-107

B-18 B-48 B-78 B-108

B-19 B-49 B-79 B-109

B-20 B-50 B-80 B-110

B-21 B-51 B-81 B-111

B-22 B-52 B-82 B-112

B-23 B-53 B-83 B-113

B-24 B-54 B-84 B-114

B-25 B-55 B-85 B-115

B-26 B-56 B-86 B-116

B-27 B-57 B-87 B-117

B-28 B-58 B-88 B-118

B-29 B-59 B-89 B-119

B-30 B-60 B-90 B-120


20/49

ottom Edge Thickness Readings Data Tak

ank #: 3

lient: PORT OIL

ocation: PORTLAND, CTPoint No. E- Readings in thousandths of an inch

Plate 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

MAX = 279 MIN = 230 AVG = 262

-1 263 259 260 269 268 269 269 274 273 275 277 274 271 258 268 270 277 273 273 271 263 260 269 276 276 271 269 279

-2 274 261 276 258 264 258 234 241 238 241 241 230 252 244 252 250 238 262 266 266 246 258 248 256 247 263 269 268

-3 273 265 272 271 266 260 262 270 266 271 278 274 247 254 260 260 266 264 255 254 245 256 255 274 277 267 269 273

-4 278 279 263 275 278 264 273 254 267 258 249 231 243 247 262 261 265 264 250 260 265 264 259 255 254 262 269 267

-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

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

Btm Edge Data Pg 1


21/49

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 DJA

Client: PORT OIL representative. - 814-676-3663 or 661-363-5453 an inch.

Remaining Wall Pit In Critical Remaining Wall Pit

Sheet # Thickness Depth X Y Zone Sheet # Thickness Depth

2 127 -1.60 6.50 N

2 175 -2.50 6.00 N

2 187 -2.80 6.30 N

5 185 -4.90 3.80 N

11 230 5.00 -4.60 N

Remaining Wall Th

Pit Depth (Topside


22/49

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

Tank #: 3 point at the shell being 0.00'

Tank Dia: 35 ft

Max Reading: 3.36 ft at edge, used to correct data

Distance across tank from edge ==>

seam shell

1 0.30

2 0.15

3 0.02

4 0.00

5 0.116 0.27

7 0.42

8 0.42

9

10

11

12

13

14

15

16

17

1819

20

21

22

23

24

Data taken: Description of Benchmark :

Elevation on Benchmark :

9/3/2010


23/49

Out-of-Plane Edge Deflect ion Analysis - API-653 Appendix B

Tank No.: 3Formula for Out-of-Plane Deflection: |S| < or = (L x Y x 11) / [2(E x H) ]

Where:

S = deflection, in feet

L = arc length, in feet 0.016 feet = 0.19 inches

Y = yield strength, in psi L: 13.7 feet

E = Young's modulus, in psi Y: 30,000 psi

H = tank height, in feet E: 29.5 x 10^6 psi

H: 37.90 feet

S allow: 0.028 feet

Out-of-Plane edge settlement is acceptable per API-653.

Planar Tilt = 0.42'

Sequence Equiv. Data Cos Averaged

No. Station Angle, deg feet Curve Diff. Diff.

0 4 0 0.000 -0.007 -0.007 0.005

1 5 45 0.110 0.106 -0.004 0.006

2 6 90 0.270 0.280 0.010 0.015

3 7 135 0.420 0.413 -0.007 0.0164 8 180 0.420 0.427 0.007 0.004

5 1 225 0.300 0.314 0.014 0.016

6 2 270 0.150 0.140 -0.010 0.010

7 3 315 0.020 0.007 -0.013 0.004

8 4 360 0.000 -0.007 -0.007 0.001


24/49

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.

Distanceabovelowp

oint,ft.


25/49

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

TANK #: 3

CLIENT: PORT OIL

LOCATION: PORTLAND, CT

Bottom Radius Edge B2 Center Tank Angle of B in B Condition

Weld of Bend Elevation Elevation Elevation Diameter Weld to Tank Inches Allowable

Reading Reading Reading Radius

A WELD 2 5.48 5.47 5.84 34.80 42 0.49 2.00 Edge Settlement is Acceptable

B WELD 2 5.58 5.55 5.84 34.80 12 0.45 2.00 Edge Settlement is Acceptable

C WELD 1 5.68 5.7 5.84 34.80 12 -0.22 2.00 Edge Settlement is Acceptable

D WELD 1 5.76 5.78 5.84 34.80 39 -0.21 2.00 Edge Settlement is Acceptable


26/49

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

TANK #: 3

CLIENT: PORT OIL





A WELD 3 5.84 5.69 5.84 34.80 46 2.05 2.13 Edge Settlement is Acceptable

B WELD 2 5.68 5.63 5.84 34.80 12 0.66 2.00 Edge Settlement is Acceptable

C WELD 1 5.53 5.58 5.84 34.80 12 -0.56 2.00 Edge Settlement is Acceptable

D WELD 1 5.38 5.45 5.84 34.80 39 -0.66 2.00 Edge Settlement is Acceptable


27/49

EDGE SETTLEMENT CALCULATIONSCalculations per API Standard 653 Section B.3.4

TANK #: 3

CLIENT: PORT OIL


"A" Edge Calculations




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

"Last Row" Edge Calculations

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


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


28/49

TEMPLATES

For Templates, Please refer to

Templates File

MISSION STATEMENT

It is the mission of DJA Inspection Services, Inc. toprovide full service tank inspections tothe storage tank industry, to be known for quality and detailed inspections throughthe dedication and experience of our team and to provide the service worldwide aswell as to the individual tank owner.


29/49

DRAWINGS

MISSION STATEMENT




30/49


31/49


32/49


33/49


34/49


35/49


36/49


37/49


38/49


39/49


40/49

PHOTOS

MISSION STATEMENT




41/49


42/49


43/49


44/49


45/49


46/49


47/49


48/49

CERTIFICATION

For Certifications, Please refer to

Inspector Certification File

MISSION STATEMENT

It is the mission of DJA Inspection Services, Inc. to provide full service tank inspections tothe storage tank industry, to be known for quality and detailed inspections throughthe dedication and experience of our team and to provide the service worldwide aswell as to the individual tank owner.


49/49

RAW DATA

Hand written field obtain data will be

available upon request.

MISSION STATEMENT

It is the mission of DJA Inspection Services, Inc. to provide full service tank inspections to the storagetank industry, to be known for quality and detailed inspections through the dedication andexperience of our team and to provide the service worldwide as well as to the individual tankowner.

Documents

DJA Report Port Oil Tank 3