att j-yng-fy15-fac 2002-tank 2002-final.pdf

SUMMARY OF INSPECTION

RECOMMENDATIONS

API 653, Tank Inspect and Repair, Tank Group #16

Youngstown ARS, OH – Tank 2002

Prepared for:

U.S. Army Corps of Engineers

(USACE)

Prepared by:

Weston Solutions, Inc.

1435 Garrison Street

Suite 100 Lakewood, CO 80215

Contract Number: W9128F-10-D-0072 Task Order Number: 0004

March 2015

Youngstown-Warren ARS Tank 2002 Page 1 of 7

Storage Tank No. 2002

SUMMARY OF INSPECTION RECOMMENDATIONS

API 653 Out-of-Service Tank Inspection or Internal Inspection with External Checklist

Contract No. W9128F-10-D-0072 / TO0004 Youngstown-Warren Air Reserve Station (ARS)

Youngstown, OH

Tank No. 2002 was inspected February 26, 2015. An API 653 out-of-service inspection or Internal Inspection with External Checklist was performed by Powers Engineering & Inspection, Inc. for Weston Solutions, Inc. (WESTON), under contract to United States Army Corps of Engineers (USACOE).

TANK DATA

Diameter 30’- 0” Height 40’- 6” Nominal Capacity 208,866 (Calculated), 4973 Barrels (From API 653 Nameplate) Product Stored Jet A Construction Field-erected vertical welded steel AST with aluminum dome roof Built 1953. Repaired and altered by Witherup Fabrication and Erection in 1993.

Construction Std. API 12C, 10th Edition Foundation Concrete ringwall

INSPECTION

Type API 653 out-of-service Shell UT thickness and visual inspection Bottom MFE scan, UT thickness and visual inspection Roof UT thickness and visual inspection General General visual inspection and settlement survey

INSPECTION INTERVALS

UFC 3-460-03 require API 653 out of-service inspection every 10 years. In-service and out-of-service inspection intervals allowable per API 653 will be included in the final inspection report.

Inspection Type Interval Complete no later than:

API In-Service (external) 5 years February 2020 UFC Out-of-Service (internal) 10 years February 2025 API Out-of-Service 20 years February 2035

Youngstown-Warren ARS Tank 2002 Page 2 of 7

MANDATORY RECOMMENDATIONS

Mandatory items are repairs or other actions necessary to preserve or restore the structural or hydraulic integrity of the tank, or to comply with applicable codes, standards and regulations.

1. During tank to tank transfer of 10,000 gallons of product, AST was manually gauged and determined that existing one 6-inch Class 150 and two 8-inch Class 150 Double Block and Bleed valves allowed bypass of fuel.

Perform service maintenance of one 6-inch Class 150 (M-2) and two 8-inch Class 150 Double Block and Bleed valves (M-3 and M-6) before return to service. (See Photo Log Photo 1)

2. 6-inch receipt and 8-inch issue shell course nozzles to centerline distances are not IAW API 650.

Provide NDE examination (Magnetic Particle (MT)) IAW API 653 Section 4.3.9.1 of shell welds closer than spacing requirements. If welds have no rejectable defects or indications, accept spacing of welds IAW API 653 Section 4.3.9.1.

3. The internal floating roof is equipped with a mechanical shoe with fabric primary wiper.

Replace internal floating roof mechanical shoe seal with a double wiper seal IAW UFGS 33 56 13.13 “Steel Tanks with Fixed Roofs” Para. 2.13.2. (See Photo Log Photo 26) If the steel IFR is replaced as recommended in item 17, incorporate the double wiper seal installation into the new aluminum IFR.

4. AST 2002 piping will not be equipped for tank-to-tank transfer to AST 2001, if hydraulic high level shut-off control valve (HLV) is provided as Recommended Repair 23.

Provide engineering assessment to determine piping and valving modification for tank-to-tank transfer.

NEAR TERM RECOMMENDATIONS

Near-Term recommendations are repairs and upgrades based on good engineering and maintenance practices or compliance with policy or criteria.

5. Tell-tale hole size for two 36-inch manways, 6-inch issue and 8-inch receipt shell reinforcement plates are not ¼-inch and not IAW API 653.

Recommend to provide ¼-inch tell tales IAW API 653 Figure 9.7. After providing tell-tales, perform pneumatic test IAW API 650 Section 7.3.4 by applying 15 lbf/in2 pneumatic pressure between the reinforcement plate and tank shell by applying pressure thru tell-tale holes, pack with white petroleum grease after acceptance of pneumatic tests. (See Photo Log Photo 2)

6. Fifty eight stairs bottoms are not seal welded at shell to stairway tread attachment.

Recommend seal welding stair bottoms. (See Photo Log Photo 3) g6cdxmdc Sticky Note SP-C: Nonconcur; base maintenance

POL-TCX: Concur with SP-C g6cdxmdc Sticky Note SP-C: POL-TCX Review

POL-TCX: Concur g6cdxmdc Sticky Note SP-C: Nonconcur; in SOW

POL-TCX: Concur, in SOW.

g6cdxmdc Sticky Note SP-C: POL-TCX Review

POL-TCX: Concur, we need to ensure piping and valves will be adequate for both the installation of the HLV and the continued capability of tank-to-tank transfer.

g6cdxmdc Sticky Note SP-C: Concur

POL-TCX: Concur g6cdxmdc Sticky Note SP-C: Review POL-TCX

POL-TCX: Leave as-is

Youngstown-Warren ARS Tank 2002 Page 3 of 7

7. Four tank grounds consist of a bolted connection to tank shell and do not have reinforcement plates under the ground lug. The ground wires are not exothermically welded to the grounding lug IAW API 650 and AW 78-24-27.

Recommend to remove existing tank shell ground connections and provide tank grounding IAW AW 78-24-27 Drawing Sheet D.11/Detail A1. (See Photo Log Photo 4)

8. Circumferential stairway ground cable is grounded by conductor wire wrapped around a stairway hand rail and connected to a shell ground connector.

Provide ground cable attached to circumferential stairway IAW AW 78-24-27 Drawing Sheet D.11/Detail A1. (See Photo Log Photo 5)

9. No extension of the stairway exists for access at the high and high-high level controls.

Provide extension to twelve stair treads at the calculated level of high and high-high level controls after insertion of stilling wells and internal repairs IAW AW 78-24-27 Drawing Sheet G.04 Item G. 2. d. thru k. and AW 78-24-27 Drawing Sheet D.12/Detail A3.

10. External shell, coatings have failed on approximately 200 SF of localized coated failure.

Recoat areas of external localized coating failure IAW UFGS 09 97 13.27 or other approved coating specifications. (See Photo Log Photo 6 and 7)

11. Internal floating roof penetration seals are highly worn and/or damaged.

Provide new internal floating roof penetration gaskets for 8-inch manual gauge stilling well/ ladder combination, 24-inch IFR manway and 8-inch ATG stilling well.

12. Internal tank bottom contains approximately 30 SF of localized coating failure at bottom reinforcement plates and tank bottom.

Recoat areas of internal localized coating failure IAW UFGS 09 97 13.17 or other approved coating specifications. (See Photo Log Photo 8)

13. The epoxy coating sealant installed between the concrete ringwall foundation and tank bottom is cracked and is failed.

Install backer road and a fuel resistant sealant on 360° circumference (95 LF) of the concrete ringwall foundation to tank bottom. (See Photo Log Photo 9)

14. 8-inch external issue line penetration to Pump House and 8-inch transfer line to AST 2001 penetrations thru the common dike wall between AST 2001 and AST 2002 is cracked and deteriorated and contains no mechanical seals.

Remove existing sealant and provide two new mechanical seals and fuel resistant sealants at two 8-inch dike penetrations.

15. Six internal bottom reinforcement plates (three plates for 1-inch water draw off and three plates for the suction line) are equipped with square corners and not IAW API 653 Figure 9.13.

Remove six existing non-compliant bottom reinforcement plates and provide six bottom reinforcement plates IAW API 653 Figure 9.13. (See Photo Log Photo 10)

SP-C: POL-TCX Review;

POL-TCX: Concur g6cdxmdc Sticky Note SP-C: Concur

POL-TCX: Concur g6cdxmdc Sticky Note SP-C: Nonconcur; in SOW

POL-TCX: Concur, in SOW; ensure 22" tread clearance from obstruction.

g6cdxmdc Sticky Note SP-C: Concur

POL-TCX: Concur g6cdxmdc Sticky Note SP-C: Nonconcur; in SOW

POL-TCX: Concur, in SOW.

g6cdxmdc Sticky Note SP-C: Concur

POL-TCX: Concur, coating shall be iaw UFGS 09 97 13.15.

g6cdxmdc Sticky Note SP-C: Concur

POL-TCX: Concur, but install buna-n gasket and polysulfide mastic sealant. Backer rod will pull out over time.

g6cdxmdc Sticky Note SP-C: POL-TCX Review

POL-TCX: Concur g6cdxmdc Sticky Note SP-C: POL-TCX Review

POL-TCX: Non-concur; Provide NDE testing of the welds.

Youngstown-Warren ARS Tank 2002 Page 4 of 7

16. Tank has improper identification, NFPA placards and labeling.

Provide new labeling to Jet-A service tank identification IAW MIL-STD 161G, NFPA 30 and NFPA 704. (See Photo Log Photo 11)

LONG TERM RECOMMENDATIONS

Repairs and upgrades intended to extend the service life of the tank, ensure continued compliance with codes, standards and regulations, and discretionary improvements.

17. Continue providing API 653 inspection at required intervals.

Provide in accordance with API 653, and Service Headquarters policy.

18. Replace carbon steel internal floating roof with an aluminum floating roof pan, IFR penetration seals, and anti-rotation cables.

Remove and replace existing internal carbon steel floating roof, provide IFR seal, anti-rotation cables IAW AW 78-24-27 Drawing G.04 General Note G “Tank Sizing Sequence / Procedure (Tanks with Floating Pan)”, API 653 Para. 9.12 and UFGS 33 56 13.13 “Steel Tanks with Fixed Roofs” Section 2.13. Perform internal repairs IAW API 653 Section 9, perform NDE IAW API 653 Section 12, and provide touch up coating IAW UFGS 09 97

13.17 “Three Coat Epoxy Coating of Welded Steel Petroleum Fuel Tanks.”

19. The tank is not equipped with anti-rotation devices.

If the IFR is not replaced IAW item 17 install three anti-rotation devices IAW UFGS 33 56 13.1.

20. Double bottom does not contain leak detection tell-tale piping or cathodic protection IAW

AW 78-24-27.

Provide leak detection tall-tale piping IAW AW 78-24-27 Drawing Sheet D.02 and D.03 and cathodic protection IAW AW 78-24-27 Drawing Sheet D.15.

21. 8-inch issue, 6-inch receipt lines and two 36-inch manways have reinforcement pad heights and widths are not IAW API 653 Table 5-6b.

Continue to monitor reinforcement pad heights or widths during future API 653 inspections.

22. 8-inch issue and 6-inch nozzle neck lengths are not IAW API 653 Table 5-6b.

Continue to monitor reinforcement pad heights or widths during future API 653 inspections.

23. 8-inch receipt nozzle thickness is not IAW API 653 Table 5-6b.

Continue to monitor 8-inch receipt nozzle thickness during future API 653 inspections.

RECOMMENDED REPAIRS FOR NON-COMPLIANCE WITH DoD STANDARDS Repairs and upgrades based on UFC 3-460-01, UFGS, AW 78-24-27 and DoD standards, practices or compliance with policy or criteria.

24. AST 6-inch receipt line is not equipped with hydraulic high level shut-off control valve

(HLV) IAW AW 78-24-27.

g6cdxmdc Sticky Note SP-C: Concur

POL-TCX: Concur g6cdxmdc Sticky Note SP-C: Concur

POL-TCX: Concur.

g6cdxmdc Sticky Note SP-C: POL-TCX Review

POL-TCX: Leave as is.

g6cdxmdc Sticky Note SP-C: Nonconcur; Recommend install only two cables

POL-TCX: Install 2 anti-rotation cables.

g6cdxmdc Sticky Note SP-C: Concur

POL-TCX: Non-concur; this would require replacement of the tank bottom which is not required at this time.

g6cdxmdc Sticky Note SP-C: Concur

POL-TCX: Perform NDE testing of welds for repads not in compliance with API 650.

g6cdxmdc Sticky Note SP-C: Concur

POL-TCX: Concur g6cdxmdc Sticky Note SP-C: Concur

POL-TCX: Concur g6cdxmdc Sticky Note SP-C: Nonconcur; in SOW

POL-TCX: Concur, in SOW.

Youngstown-Warren ARS Tank 2002 Page 5 of 7

Provide new 6-inch hydraulic high level control valve, solenoid, control tubing from HLV to high level control valve, shell supports, 200 LF of conduit and electrical conductors from high level and HLV to electrical control pane IAW AW 78-24-27 Drawing Sheet D.12/Detail A1. (See Photo Log Photo 2)

25. 1-inch water draw off nozzle is threaded and contains 1-inch carbon steel threaded ball valve.

The 1-inch water draw off line does not contain a 2-inch nozzle with 2-inch Class 150 double block and bleed valve and does not have a separate product return line IAW AW 78-24-27.

Remove 1-inch threaded nozzle, threaded ball valve and piping and provide 2-inch Class 150 nozzle and 2-inch product return line IAW AW 78-24-27 Drawing D.10 / Detail C1;

and 2-inch Class 150 Double Block and Bleed valve, piping and appurtenances to product saver tank, IAW AW 78-24-27 Drawing Sheet D.13/Detail A1. (See Photo Log Photo 12)

26. Tank is not equipped with two roof scaffold cable supports IAW UFC 3-460-01.

Provide two scaffold cable supports IAW UFC 3-360-01 Item ff, AW 78-24-27 Drawing No. 100.02 Item v and API 650 Figure 5.22.

27. External pipe supports are saddle type supports and are not fixed and slider supports IAW UFC 3-460-01 Facility Plates 20 and 21.

Provide 14 for pipe supports UFC 3-460-01 Facility Plates 20 and 21 (See Photo Log Photo 15)

28. Two of four lockdown latches on roof circulation vents/inspection hatches are installed on the adjacent roof hand rails.

Provide four lockdown latches on roof circulation vents/inspection hatches. (See Photo Log Photo 16)

29. AST is not equipped with a 4-inch low suction line IAW AW 78-24-27.

Provide IAW AW 78-24-27 Drawing Sheets 100.01 and 100.02 approximately 15 LF of new 4-inch internal piping, internal pipe supports and Class 150 flanges, 4-inch Class 150 shell nozzle, 4-inch Class 150 DB&B valve, gaskets and fasteners IAW UFGS 33 52 43 “Aviation Fuel Distribution (Non-Hydrant).”

30. Low level controls and assemblies contain 1-inch threaded nozzles, joints and valves; and do not contain low-low level controls and assembly.

Provide new low and low-low level nozzles, controls and assembly IAW AW 78-24-27 Drawing Sheet D.12 / Detail C1. (See Photo Log Photo 17)

31. High and high-high level controls are not accessible from stairway and contain threaded nozzles, valves and piping and are not IAW AW 78-24-27.

Remove, relocate and replace high and high level control nozzles, valves, piping and appurtenances and replace IAW AW 78-24-27 Drawing Sheet D.12/Detail A3 and C3. (See Photo Log Photo 18)

32. Two 36-inch manways are not equipped with davit arms IAW AW 78-24-27 and UFGS 33 56 13.13.

g6cdxmdc Sticky Note SP-C: POL-TCX Review

POL-TCX: Concur g6cdxmdc Sticky Note SP-C: Concur

POL-TCX: Provide if coating repairs performed for this tank require use scaffold cable supports.

g6cdxmdc Sticky Note SP-C: POL-TCX Review

POL-TCX: Leave as-is.

g6cdxmdc Sticky Note SP-C: POL-TCX Review

POL-TCX: Concur. Only 2 lockdown latches are required if 2/4 already have them. Provide removeable stainless steel chain and clasp at mid-rail above circulation vents g6cdxmdc Sticky Note SP-C: Concur

POL-TCX: Concur.

g6cdxmdc Sticky Note SP-C: Nonconcur; in SOW

POL-TCX: Concur, in SOW.

g6cdxmdc Sticky Note SP-C: Nonconcur; in SOW

POL-TCX: Concur, in SOW.

g6cdxmdc Sticky Note SP-C: Concur

POL-TCX: Concur

Youngstown-Warren ARS Tank 2002 Page 6 of 7

Install davit arms on two 36-inch manways IAW AW 78-24-27 Drawing Sheet D.10 / Detail C4 and API 650. (See Photo Log Photo 19)

33. Internal 6-inch receipt diffuser is round, two diffuser pipe supports are attached to the bottom and does not conform IAW AW 78-24-27. 6-inch internal receipt line does not contain an internal flange set IAW API 650.

Remove and provide new 6-inch internal receipt diffuser IAW AW 78-24-27 Drawing Sheet D.08/Detail C1 and two pipe supports IAW AW 78-24-27 Drawing Sheet D.08 / Detail A4. Provide internal flanges IAW AW 78-24-27 Drawing Sheet D.10/Detail C1 and API 650 Table 5-6b. (See Photo Log Photo 20 and 21)

34. Shell second course is not equipped with 36-inch manway and davit arm for access to top of internal floating pan IAW AW 78-24-27.

Provide 36-inch manway and davit arm IAW AW 78-24-27 Drawing Sheet D.10/Detail A4 and C4. Provide shell repairs IAW API 653 Section 9 “Tank Repair and Alteration”, provide NDE IAW API 653 Section 12 “Examination and Testing” and coating repairs IAW UFGS 09 97 13.27 “Exterior Coating of Steel Structures.”

35. External perimeter at four roof circulation vents/inspection hatches are not equipped with roof midrails and the toe board is at ½-inch above the roof top and is not IAW AW 78-24-27 Drawing Sheet D.11/Detail A4 and OSHA 29 CFR 1926.502.

Provide OSHA compliant roof mid rails at four circulation vents/inspection hatches and complete perimeter roof toe boards require removal and reattachment at ¼-inch height IAW AW 78-24-27 Drawing Sheet D.11/Detail A4 and 29 CFR 1926.502 . (See Photo Log Photo 16)

36. Two pressure relief valves (PRVs) on the 8-inch issue and 8-inch issue lines contain threaded piping, contain stainless steel threaded pipe nipples connected to carbon steel threaded nozzles without insulating flange gaskets, one PRV contains a carbon steel test tee and two PRVs are not equipped with test tees IAW AW 78-24-27.

Remove threaded piping and ball valves, provide welded piping WNRF flanges, and stainless steel flanged test tees IAW AW 78-24-27 Drawing Sheet D.10/ Detail A3. (See Photo Log Photo 22)

37. AST is not equipped with an ATG water probe stilling well IAW AW 78-24-27.

Provide 6-inch ATG water probe stilling well and 8-inch roof nozzle and internal floating roof penetration IAW AW 78-24-27 Drawing Sheet D.07/Detail C4. Provide repairs IAW API 653 Figure 9.13, perform roof nozzle installation IAW API 653 Section 9, perform NDE IAW API 653 Section 12, and provide touch up coating IAW UFGS 09 97 13.27 “Exterior Coating of Steel Structures.”

38. Existing ATG system is installed in the existing 8-inch combination ladder/manual stilling well and stilling well is also used for a manual gauging stilling well not IAW AW 78-24-27.

Provide separate 8-inch ATG stilling well and 10-inch Class 150 roof nozzle and internal floating roof penetration IAW AW 78-24-27 Drawing Sheet D.07/Detail A1. Provide repairs IAW API 653 Figure 9.13, perform roof nozzle installation IAW API 653 Section g6cdxmdc Sticky Note SP-C: POL-TCX Review

POL-TCX: Provid internal flange i.a.w. API 650. Reuse existing receipt line and diffuser.

g6cdxmdc Sticky Note SP-C: POL-TCX Review

POL-TCX: Leave as-is. The ladder can be used to access the top of the pan.

g6cdxmdc Sticky Note

POL-TCX: Provide removeable ss chain and clasp at mid-rails above the inspection hatches. Remove toeboard and reattach to provide a 1/4" clearance above the tank roof.

SP-C: POL-TCX Review

POL-TCX: Concur g6cdxmdc Sticky Note SP-C: Nonconcur; in SOW

POL-TCX: Concur, in SOW.

g6cdxmdc Sticky Note SP-C: Nonconcur; in SOW

POL-TCX: Concur, in SOW.

Youngstown-Warren ARS Tank 2002 Page 7 of 7

9, perform NDE IAW API 653 Section 12, and provide touch up coating IAW UFGS 09 97

13.17 “Three Coat Epoxy Coating of Welded Steel Petroleum Fuel Tanks.” (See Photo Log Photo 23)

39. Existing 8-inch combination ladder/manual stilling well base is not properly attached to bottom, is not slotted and does not contain a safety rail IAW AW 78-24-27.

Slot stilling well IAW AW 78-24-27 Drawing Sheet D.07/Detail C3. Remove attachment of 8-inch combination ladder/manual stilling well base to bottom and provide base attachment IAW AW 78-24-27 Drawing Sheet D.08/Detail C3. (See Photo Log Photos 24 and 25)

40. The downturn elbow of the 8-inch internal issue line is located at edge of center sump, pipe supports, and issue line is not equipped with an anti-vortex plate not IAW AW 78-24-27.

Internal issue line bottom reinforcement plate has square edges not IAW API 653.

Remove existing reinforcement plate, cut the 8-inch issue line to half the distance from the sump to internal shell (7.5-Feet), provide new anti-vortex plate (17.25-inch diameter) and two internal supports IAW AW 78-24-27 Drawing Sheet D.08/Details A1 and A4. Provide new bottom reinforcement plate IAW API 653 Figure 9.13. (See Photo Log Photo 24) g6cdxmdc Sticky Note SP-C: Nonconcur; in SOW

POL-TCX: The ladder shall not be used for the manual gauging well. Provide a separate 8" gauge well from the ladder for the manual gauging as indicated in the SOW. The ladder stilling well does not need to be slotted since it will no longer be used for gauging. The bottom connection shall not be altered. Provide a safety climbing device on the ladder.

g6cdxmdc Sticky Note

POL-TCX: Reduce the length of the issue line to 1/2 the tank radius. NDE existing pipe support pads. Pad removal is not necessary.

Project Title: Date:

Tank Group 16 Out-of-Service API 653 Inspection 03/19/2015

Location: Pages:

Youngtown ARS, OH 1 of 6

Weston Solutions Project Number Contract No. W9128F-10-D-0072, Youngstown

ARS, OH- Double Block and Bleed valves suspected of leaking by.

Photo 1/Deficiency #1

No. W9128F-10-D-0072, Youngstown ARS, OH – Reinforcement plate tell-tale holes are smaller than ¼-inch. No HLCV installed.

Photo 2/Deficiency #5 and #24

No. W9128F-10-D-0072, Youngstown ARS, OH – Underside of stairs are not seal welded.

Photo 3/Deficiency #6

No. W9128F-10-D-0072, Youngstown ARS, OH-Tank ground with bolted connection to the tank shell.

Photo 4/Deficiency #7

Youngtown ARS, OH 2 of 6

OH – Stairway ground wrapped around the handrail and connected the shell ground.

Photo 5/Deficiency #8

No. W9128F-10-D-0072, Youngstown ARS, OH – Corrosion on piping and tank shell and appurtenances

Photo 6/Deficiency #10

No. W9128F-10-D-0072, Youngstown ARS, OH – Corrosion around the tank identification plate

Photo 7/Deficiency #10

No. W9128F-10-D-0072, Youngstown ARS, OH – Coating failure on the interior tank bottom

Photo 8/Deficiency #12

Youngtown ARS, OH 3 of 6

OH – Tank ringwall/chime sealant failure.

Photo 9/Deficiency #13

No. W9128F-10-D-0072, Youngstown ARS, OH – Issue line pipe supports with square corners.

Photo 10/Deficiency #15

No. W9128F-10-D-0072, Youngstown ARS, OH – Improper tank makings (MIL

STD/NFPA)

Photo 11/Deficiency #16

Weston Solutions Project Number Contract No.

W9128F-10-D-0072, Youngstown ARS, OH –

Water draw off system with single draw line, no DBB valves, and threaded piping.

Photo 12/Deficiency #25

Youngtown ARS, OH 4 of 6

OH – External pipe supports on exterior piping.

Photo 15/Deficiency #27

No. W9128F-10-D-0072, Youngstown ARS, OH – Circulation/inspection vents with no lock down hatches and no intermediate chain railing.

Photo 16/Deficiency #28 and #35

No. W9128F-10-D-0072, Youngstown ARS, OH – Low level canister with no low-low level installed

Photo 17/Deficiency #30

No. W9128F-10-D-0072, Youngstown ARS, OH – High level assembly not accessible from the stairs.

Photo 18/Deficiency #31

Youngtown ARS, OH 5 of 6

OH – 36-inch manway with no davit arm.

Photo 19/Deficiency #32

No. W9128F-10-D-0072, Youngstown ARS, OH – Round diffuser with pipe supports welded to the diffuser.

Photo 20/Deficiency #33

No. W9128F-10-D-0072, Youngstown ARS, OH – Diffuser pipe with no internal flange connections.

Photo 21/Deficiency #33

No. W9128F-10-D-0072, Youngstown ARS, OH – PRV with threaded connections and no test tees.

Photo 22/Deficiency #36

Youngtown ARS, OH 6 of 6

OH – Combination ladder/stilling well open and not installed per DLA Policy.

Photo 23/Deficiency #38

No. W9128F-10-D-0072, Youngstown ARS, OH – Combination ladder stilling well is not attached to the tank bottom correctly and the suction line with no anti-vortex plate.

Photo 24/Deficiency #39 and 40

No. W9128F-10-D-0072, Youngstown ARS, OH – Combination ladder stilling well is not attached to the tank bottom correctly.

Photo 25/Deficiency #39

OH – Existing mechanical shoe/wiper seal.

Photo 26/Deficiency #3

API 653

Inspection Report

Out-Of-Service or Internal Inspection w/ External Checklist

Report Prepared For

YOUNGSTOWN-WARREN AIR RESERVE STATION

YOUNGSTOWN, OH

PRODUCT

JET A

Tank Number

Inspected on

February 26, 2015

Report Prepared By

PPPOOOWWWEEERRRSSS

ENGINEERING & INSPECTION, INC.

PO BOX 1928

BENICIA, CA 94510

TEL 707 334 3400

FAX 707 922 2284

WWW.POWERSEI.COM

Gary Powers, P.E.

Authorized Inspector 0691

ASNT Level II UT, PT, MT and VT API 653 Appendix G MFL Certified

California Civil Engineer 60589

Inspection History Constructed New Bottom Annular Plates External Inspection Internal Inspection Shell UT Inspection

1953 1993 N/A 2/26/2015 2/26/2015 2/26/2015

Next Inspection: 2020 2035 2020

Revisions

Rev. 0 3/14/15 Original Report Rev. 1 3/17/15 Minor Corrections

BENICIA, CA 94510

YOUNGSTOWN-WARREN AIR

RESERVE STATION

API 653 INTERNAL INSPECTION

ENGINEERING & INSPECTION, INC www.powersei.com Tank 2002

API653 Internal Youngstown-Waren ARS Tank 2002_2015 rev 1 © 2015 PE&I Inc.

Page 2 of 18 Date Printed: 3/17/15 7:05 PM

EXECUTIVE SUMMARY

Powers Engineering and Inspection, Inc. was contracted by Weston Solutions to provide an API 653 Internal Inspection for Tank 2002 at the Youngstown-Warren Air Reserve Station in Youngstown, OH.

The 30-ft dia. x 40.5-ft high cone roof tank was originally constructed in 1953 by Witherup Fabrication and Erection Inc. The tank has a 5/16-in butt-welded cone down double bottom and is equipped with an internal double deck pontoon floating roof. The tank is in Jet A product service.

The report and executive summary are based on field inspection and evaluation in accordance with the API 653 Standard. Before the tank is returned to service all the requirements of API 650 and 653 should be met.

Inspection

Methods Employed

Results

1 Identify any current leak paths resulting from corrosion, internal or external.

API 653

Appendix G MFL (Magnetic Flux Leakage) bottom corrosion survey.

100% Visual Inspection (VT) of shell, annular plate, corner weld and all bottom welds for defects cracks or corrosion Digital Camera Documentation.

1.1 The 5/16-in double bottom was inspected for soil side

corrosion utilizing the MFE 2412 Mark II scanner.

1.2 Several minor indications of magnetic flux leakage were

detected during the floor scan. The indications were proved up with a UT scrub with minimal soil side corrosion present. The lowest remaining soil side indication identified was 0.300-in. No corrective action is required.

1.3 100% visual inspection of the bottom was performed. No significant product-side pitting was identified.

1.4 All areas inaccessible to the scanner were 100% UT

scrubbed. No indication of soil-side corrosion was located.

1.5 At the time of inspection access to the upper deck of the floating roof was restricted and a thorough inspection of the upper deck and pontoons could not be conducted. However, via limited visual inspection of the upper deck conducted from the cone roof gauge pole access hatch, minor staining appeared to be present near the center of the floating roof adjacent to the access manway. Recommend conducting additional inspection and diesel testing along the floating roof and pontoons prior to return-to-service to determine if any leak paths are present along the floating roof, pontoons and welds.

1.6 The period-to-next formal API 653 Internal Inspection, utilizing the MRT method described in API 653 4th Edition may be extended to a maximum of 20 years per corrosion rate calculations. (However, more stringent governing regulatory intervals of inspection may supersede this interval).

2 Identify any risk areas for future leak path developm ent

Utilize Ultrasonic Testing (UT) to find areas of potential thinning or corrosion loss from internal corrosion.

Documentation of any brittle fracture concerns including nozzle weld spacing.

2.1 The 8-in suction piping elbow down nozzle is installed

approximately 6-in off the tank bottom directly over the center of the sump, no anti-vortex device is currently installed to the suction piping. Consider reworking interior suction piping so it is not directly over sump center to help mitigate the suction of water during pumping events.

2.2 The 30-in dia. x 18-in deep sump was UT scanned along

equally spaced sections along the circumference with an average wall thickness of 0.47-in.

2.3 UT readings were taken along each bottom plate with an

average bottom plate UT reading of 0.31-in.

2.4 UT readings were taken along the shell from the spiral

stairway. Readings were approximately nominal with no metal loss identified (see NDE report).

2.5 All tank shell nozzle repads are equipped with very small open tell tales (< ¼-in). Recommend installing ¼-in tell tales tapped for

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1/8-in pipe thread, then pressure test, followed by packing openings with heavy grease to prevent corrosion or water infiltration in the repad.

2.6 The product recovery piping and tank connected to the 1-in threaded water draw out piping has a combination of galvanized and stainless steel components, threaded joints and isolated minor coating failure along the galvanized nozzle. Consider replacing product recovery piping component with uniform schedule 80 piping with weld-o-let joints and/or per DoD/UFC standard design.

2.7 The inlet diffuser piping was not double flanged in the interior of the tank, and also had a rounded end instead of an oval IAW AW. Consider installing double flanged diffuser and oval IAW AW end per API 650/653, DoD standard design and UFC requirements.

2.8 There was no manhole located above the internal floating

pan’s high position to aid in venting the tank during cleaning and to provide access to the floating pan’s elastomeric wiper seals.

Consider installing manhole on tank shell above the internal floating pan per DoD Standard AW 78-24-27.

2.9 ) All of the tank exterior appurtenances running up and supported along the tank shell (Varec level gauge, alarm piping) are welded directly to the shell. Consider installing 100% seal welded repads along all supports.

2.10 Some nozzle & repad geometry and thicknesses were found

to be below API 650 requirements. As these components have been operating in-service at max capacity, no corrective action is required and brittle fracture risk is minimal. Monitor nozzles for signs of stress-induced damage along the shell to determine if corrective action is needed in the future. Consider modifying to meet requirements.

2.11 Rusting and minor corrosion was identified along the

nameplate mounting. (Recommendation) Clean rust and apply touch up coatings to help mitigate the spread of corrosion.

3 Settlement Survey of the shell base for settlement.

Survey of the bottom for settlement.

3.1 The maximum out-of-plane settlement was approximately

0.75-in, which is within acceptable limits of API 653 Appendix B calculations for differential settlement. See survey results.

3.2 No significant edge settlement was identified.

3.3 The shell was inspected for verticality and distortion. No significant distortion was indicated. A minor inward dent was identified along the 2nd shell course. No action required, monitor these areas for any change.

3.4 The seismic loads were calculated utilizing the latest API 650 Appendix E (ASCE 7/ IBC 2009 methods). The risk of damage from a seismic event is minimal for all fill heights.

3.5 There was no water tight seal installed along the bottom

extension to concrete foundation interface. Currently an epoxy coating had been applied along the bottom extension and approximately 8-in of the concrete foundation, this coating is showing signs of failure and cracking along the interface.

Consider applying a water tight caulking/seal along the bottom extension to concrete interface to mitigate the infiltration of water under the bottom.

4 Venting VT of existing roof vents

4.1 The tank is equipped with one 24-in open mushroom vent, 4 hooded/circulation roof vents along the cone roof, and four shell overflow vents.

4.2 Minor coating failure and rusting were identified along the 24-in open cone roof vent flange. Consider cleaning and servicing

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Page 4 of 18 Date Printed: 3/17/15 7:05 PM vent and apply touch up coating as needed prior to return-to-service.

4.3 Two of the four cone roof hooded roof circulation vents were equipped with additional lock downs installed on the adjacent hand rails. Consider installing lock downs on all hooded roof circulation vents.

4.4 The floating roof is currently vented with one 6-in vacuum breaker (pop-up) vent.

4.5 Consider cleaning and servicing all vents prior to return-to-service.

5 Access Structure

VT of existing access structure.

5.1The spiral stairway access structure is installed with 33-in handrails, no toe board is installed along the bottom of the hand railing. Consider installing a new handrail system that meets the OSHA requirements.

5.2 The angle iron handrails, and upper platform appear to be fair condition and have only minor isolated areas of coating failure.

5.3 The cone roof is equipped with a 100% perimeter angle iron handrail which appears to be in good condition.

5.4 The access structure supports and stairway treads are welded directly to the shell. Consider installing 100% seal-welded repads.

6 Cone Roof VT of existing roof

6.1 At the time of inspection heavy snow and ice had accumulated along the cone roof. Limited visual inspection of the cone roof indicated that the roof is in good condition with only minor isolated areas of coating failures observed.

6.2 The cone roof and tank was equipped with only one gauge

well for monitoring mounted along the cone roof and gauge pole access hatch. Per DoD standard design and UFC requirements (UFC 3-460-01 Table 8-1 Gauge/Gauge Hatch/Stilling wells (n,o,q,r,s)) Consider install additional nozzles for gauging.

6.3 There was no bolted cover installed on the cone roof for

installation and removal of the internal floating pan. Consider installing bolted cover on cone roof.

6.4 The lockdown latch along the cone roof manway gauge pole

access hatch was rusted and frozen and appeared damaged.

Consider repairing/replacing damaged lockdown latch.

7 Floating Roof

VT of existing floating roof

7.1 The tank is equipped with double deck pontoon floating roof.

At the time of inspection access to the upper deck of the floating roof was restricted and a thorough inspection of the upper deck and pontoons could not be conducted. Limited visual inspection of the upper deck was performed from the cone roof manway gauge pole access hatch. Refer to section 1 of the executive summary.

7.2 The floating roof is equipped with a mechanical shoe with fabric primary wiper, and appears to be in good condition. Due to no access to the upper deck a secondary seal could not be confirmed.

7.3 The rim space varies from 7-in to 9.5-in.

7.4 The 8-in ladder combo gauge pole floating roof penetration well gasket seal appeared highly worn and/or damaged and do not fully seal. Recommend replacing the gasket seal.

7.5 The floating roof 24-in access manway gasket seal is not

properly seated and could be seen hanging down from the underside of the hatch. The hatch was bolted down at the time of inspection. Recommend replacing gasket seal.

8 Tank gauging overfill protection

VT of existing systems Is a Clay valve present?

8.1 The tank is currently equipped with just one 8-in gauge pole.

Per DoD standard design and UFC requirements (UFC 3-460-01 Table 8-1 Gauge/Gauge Hatch/Stilling wells (n,o,q,r,s)) Consider install additional nozzles and ATG for gauging.

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If the preferred gauging system present?

8.2 The 8-in gauge pole ladder combo is restrained with angle irons attached to seal-welded repads. The restraints allow for vertical movement but restrict horizontal movement.

8.3 A low level alarms is present along the bottom course and attached to the shell through 1-in threaded nozzles. Rework and Install low level components per DoD Standard design and UFC requirements.

8.4 The Hi level alarms are located approximately 48-in from the top of the shell and are attached to the shell with 1.5-in threaded nozzles directly above the low level and there was no access to the components. Rework and Install high alarm components per DoD standard design and UFC design requirements. The high level shut-off and alarms should be relocated to be accessed by stairway.

8.5 The tank is equipped with a Varec level gauge.

9 Dike VT of the existing Dike

9.1 The tank is surrounded by a concrete dike equipped with a liner. At the time of inspection a thorough visual inspection of the dike could not be conducted due to heavy accumulation of snow and ice. Recommend re-evaluating dike, linear and caulking/seal upon clearing/melting of snow and ice.

9.2 The dike drain could not be evaluated at the time of inspection due to the accumulation of ice and snow. Re-evaluate upon clearing/melting of snow.

9.3 None of the piping running through the dike wall appear to have link seals. At the time of inspection weather and snow conditions prevented thorough visual inspection of the containment dike, piping and components, however the 8-in suction line piping was exposed at the point it entered the dike wall and it was equipped with a rubber boot that has cracked and failed. Consider installing mechanical link seals along all piping interfaces through the dike wall.

10 Coatings VT of existing Coatings

10.1 The external shell, bottom extension, cone roof, and tank appurtenances coating appeared to be in good condition and had only minor isolated areas of coating failure. The majority of coating failure was identified along the tank appurtenances and piping (no more than 100 sq. ft.). (Recommendation) Apply touch-up coatings as needed to areas of damaged coatings.

10.2 The internal bottom coatings are in good condition with only minor isolated areas of coating failure observed.

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ACTION OR CRITICAL ITEMS

REQUIRED REPAIRS PRIOR TO RETURN TO SERVICE

(MANDATORY)

Listed below are the critical findings noted during the inspection that would prevent Tank 2002 from returning to service:

1. (Finding) At the time of inspection access to the upper deck of the floating roof was restricted and a thorough inspection of the upper deck and pontoons could not be conducted. However, via limited visual inspection of the upper deck conducted from the cone roof gauge pole access hatch, minor staining appeared to be present near the center of the floating roof adjacent to the access manway. (Recommendation) Conduct additional inspection and diesel testing along the floating roof prior to return-to-service to determine if any leak paths are present along the floating roof, pontoons and welds.

CONSIDERATIONS OR RECOMMENDED REPAIRS

RECOMMENDED REPAIRS PRIOR TO RETURN FOR SERVICE (NON-MANDATORY/NEAR

FUTURE)

The following are deficiencies identified during this inspection that the Inspector feels are mandatory items and should be addressed as soon as possible to insure continued safe operation of Tank 2002.

2. (Finding) The 8-in ladder combo gauge pole floating roof penetration well gasket seal appeared highly worn and/or damaged. (Recommendation) Replace gasket seal.

3. (Finding) The floating roof 24-in access manway gasket seal could be seen hanging down from the underside of the hatch. The hatch was bolted down at the time of inspection. (Recommendation) Replace gasket seal.

4. (Finding) The high and hi-hi alarm components were located directly above the low level components along the upper shell courses and there was no access to the components.

(Recommendation) Install high alarm components per DOD standard design and UFC design requirements, furthermore, high level shut-off and alarms should be relocated to be accessed by stairway.

5. (Findings) The 8-in suction piping elbow down nozzle is installed approximately 6-in off the tank bottom directly over the center of the sump, no anti-vortex device is currently installed to the suction piping. (Recommendation) Consider reworking interior suction piping so it is not directly over sump center to help mitigate the suction of water during pumping events.

6. (Findings) The product recovery piping and tank connected to the 1-in threaded water draw out piping has a combination of galvanized and stainless steel components, threaded joints and isolated minor coating failure along the galvanized nozzle. (Recommendation) Consider replacing product recovery piping component with uniform schedule 80 piping with weld-o-let joints and/or per DoD/UFC standard design.

7. (Finding) There was no water tight seal installed along the bottom extension to concrete foundation interface. Currently an epoxy coating had been applied along the bottom extension and approximately 8-in of the concrete foundation, this coating is showing signs of failure and cracking along the interface. (Recommendation) Consider applying a water tight caulking/seal along the bottom extension to concrete interface.

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8. (Finding) None of the piping running through the dike wall have link seals. At the time of inspection weather and snow conditions prevented thorough visual inspection of the containment dike and piping and components, however the 8-in suction line piping was exposed at the point it entered the dike wall and it was equipped with a rubber boot that has cracked and failed.

(Recommendation) Consider installing mechanical link seals along all piping interfaces through the dike wall.

9. (Findings) The spiral stairway access structure is installed with 33-in handrails, no toe board is installed along the bottom of the hand railing. (Recommendation) Consider installing a new handrail system that meets the OSHA requirements.

10. (Finding) All tank shell nozzle repads are equipped with very small open tell tales (< ¼-in).

(Recommendation) Install ¼-in tell tales tapped for 1/8-in pipe thread, then pressure test, followed by packing openings with heavy grease to prevent corrosion or water infiltration in the repad.

11. (Finding) The inlet diffuser piping was not double flanged in the interior of the tank.

(Recommendation) Consider installing double flanged diffuser per API 650/653, DoD standard design and UFC requirements.

12. (Finding) The tank was equipped with only one gauge well for monitoring mounted along the cone roof and gauge pole access hatch. (Recommendation) Install additional nozzles for gauging per DoD standard design and UFC requirements (UFC 3-460-01 Table 8-1 Gauge/Gauge Hatch/Stilling wells (n,o,q,r,s)).

13. (Finding) There was no bolted cover in the roof for installation and removal of the internal floating pan. (Recommendation) Consider installing bolted cover on cone roof.

14. (Finding) There was no manhole located above the internal floating pan’s high position to aid in venting the tank during cleaning and to provide access to the floating pan’s elastomeric wiper seals. (Recommendation) Consider installing manhole on tank shell above the internal floating pan per DoD Standard AW 78-24-27.

NON-MANDATORY ITEMS

15. (Finding) All of the tank exterior appurtenances running up and supported along the tank shell (Varec level gauge, alarm piping, access structure treads and supports) are welded directly to the shell. (Recommendation) Consider installing 100% seal welded repads along all supports.

16. (Findings) Some nozzle & repad geometry and thicknesses were found to be below API 650 requirements. As these components have been operating in-service at max capacity, no corrective action is required and brittle fracture risk is minimal. (Recommendations) Monitor nozzles for signs of stress-induced damage along the shell to determine if corrective action is needed in the future.

Consider modifying to meet requirements.

17. (Finding) The external shell, bottom extension, cone roof, and tank appurtenances coating appeared to be in good condition and had only minor isolated areas of coating failure. The majority of coating failure was identified along the tank appurtenances and piping (no more than 100 sq. ft.).

(Recommendation) Apply touch-up coatings as needed to areas of damaged coatings.

18. (Finding) Two of the four cone roof hooded roof circulation vents were equipped with additional lock downs installed on the adjacent hand rails. (Recommendation) Consider installing lock downs on all hooded roof circulation vents.

19. (Finding) The lockdown latch along the cone roof manway gauge pole access hatch was rusted and frozen and appeared damaged. (Recommendation) Consider repairing/replacing damaged lockdown latch.

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20. (Finding) Minor coating failure and rusting were identified along the 24-in open cone roof vent flange. (Recommendation) Consider cleaning and servicing vent and apply touch up coating as needed prior to return-to-service.

21. (Finding) Rusting and minor corrosion was identified along the nameplate mounting.

(Recommendation) Clean rust and apply touch up coatings to help mitigate the spread of corrosion.

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Table of Contents

Executive Summary Action or Critical Items

Required Repairs Prior to Return to Service (Mandatory) Considerations or Recommended Repairs

Recommended Repairs Prior to Return for Service (Non-Mandatory/Near Future) Non-Mandatory Items

Basic Tank Information Shell Settlement Survey Shell Thickness Calculation Shell Roll-Out Cone Roof Layout Floating Roof Bottom Lay-out Next Inspection Seismic

Appendix A API 653 Checklist Appendix B Photo’s

Initial Inspection Significant Photos Initial Inspection General Photos Appendix C Non-Destructive Examination (NDE) UT Report

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BASIC TANK INFORMATION

Tank Number: Owner: Location: Unit/Zone/Area:

US AIR FORCE

Youngstown-Warren, OH

LIQUID FUELS

Product: Diameter (ft): Height (ft): Capacity (bbls):

JET A

30-FT

40.5-FT

4,973

Type Tank:

Year Built: Design Standard: Manufacturer:

BUTT-WELDED CONE ROOF WITH

INTERNAL DOUBLE DECK PONTOON

FLOATING ROOF

1953 API 12C 10TH WITHERUP FABRICATION &

ERECTION INC.

Type Shell: Type Roof: Type Foundation: Type Bottom:

BUTT-WELDED

CONE ROOF

CONCRETE RING

5/16-IN BUTT-WELDED

Type Floating Roof: Type Primary Seal: Type Secondary Seal: Roof Vents:

DOUBLE DECK

PONTOON

MECHINICAL SHOE

UNKNOWN

(NO ACCESS)

1:24-IN OPEN VENT

4: HOODED/

CIRCULATION VENTS

4: SHELL OVERFLOW

VENTS

Roof Access: Floating Roof Access: Floating Roof Vents: Roof Man ways:

SPIRAL STAIRWAY

24-IN FLOATING ROOF

MANWAY

1: 6-IN VACUUM

BREAKER

1: 36-IN DIA. GAUGE

POLE ACCESS HATCH

Pumping Rate: Suction Line: Receipt: Shell Man ways:

UNKNOWN

1:8-IN

1:6-IN

2:36-IN

Leak Detection: Secondary Containment: Cathodic Protection: Insulation:

DBL BOTTOM

TELL-TALE

CONCRETE DIKE

N/A

NONE

Shell Coatings: Roof Coatings: Bottom Coating:

YES

YES

EPOXY

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SHELL SETTLEMENT SURVEY

0 16 31 47 63 79 0

Actual 0.00 0.25 0.62 0.75 0.62 0.25 0.00

Cosine 0.00 0.19 0.56 0.75 0.56 0.19 0.00

0.00

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80 S

et tl em en t (i n

Circumferential Distance (ft)

Base of Shell Elevation for 8 point Survey

The settlement for the tank is planer or roughly approximates the shape of a cosine curve.

The evaluation of this “out-of-levelness” or settlement, utilizing the criterion for “out-of-plane distortion” as described in API 653 Appendix B.3.2, indicates that the settlement is well within the acceptable limits.

Applicable Standards:

Shell settlement surveys were conducted in accordance with the requirements of API 653 Figure B-1. These surveys were evaluated in accordance with the API 653 Appendix B.2.2 and compared with the acceptance criteria outlined in API 653 Appendix B.3.2.

Note:

Calculation of maximum permissible S or out-of-plane distortion per API 653 Appendix B.3.2 was made using:

Find: Shell Settement API 653 4th edition Addendum 1 Appendix B Methodology

Given: Tank Number 2002 Circumference 94.2 (ft)

Tank Diameter 30.0 (ft) Req'd Stations 94 / 32 = 3 ref API 653 12.5.1.2

1 Actual Stations 6

Sum of Sqr. Diff. 0.020

15.7 L < 32-ft OK

30,000 Y Survey Max 0.063 (ft)

29,000 E 0.75 (in)

40.5 H Curve Fit R^2 1.0000

Results: Allowable > Actual

Differential (ft) 0.035 > 0.005 Pass

(in) 0.416 > 0.062

Fit Cosine to Data

Spacing Between (ft)

Tank Height (ft)

Modulas of Elasticity (ksi)

Allowable Stress (psi)

Curve Fit OK R^2>=90%

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SHELL THICKNESS CALCULATION

Find: Minimum shell thickness (t min) for each shell course utilizing the API 653 standard for tanks less than 200 ft dia.

Given:

Variable Identifier Description Value Reference

H Fill height (ft) 39.00 Measured from the base of each shell course (see column H in the table below) D Tank Diameter (ft) 30.00 G Specific Gravity 0.82 S Allow stress (psi) Varies Reference API 653 Table 4-1 E Joint Efficiency Varies Reference API 653 table 4.2 for Welded and 4.3 for Riveted construction M 1.00 Temp Modifier Varies Reference API 650 Appendix M Elevated temperature modifier

H E S Actual Solution

2.6 ( H - 1) DG

SEM

(in) (ft) (ft) % (psi) (in) (in) OK?

Shell Corrosion Rate Calculations API 653 6.3 © POWERS Engineering and Inspection, Inc. 2015

A B N RCA

Calculated Prev Current As Built Prev Current t min Previous Current

(yr) (yr) (yr) (in) (in) (in) (in) (in/yr) (in/yr) (in) (yr) (yr)

1 1953 2015 2015 0.250 0.250 0.250 0.147 0.00000 0.0000 0.1029 5 15 2 1953 2015 2015 0.250 0.250 0.241 0.116 0.00000 0.0000 0.1248 5 15 3 1953 2015 2015 0.188 0.188 0.170 0.100 0.00000 0.0000 0.0700 5 15 4 1953 2015 2015 0.188 0.188 0.168 0.100 0.00000 0.0000 0.0680 5 15 5 1953 2015 2015 0.188 0.188 0.169 0.100 0.00000 0.0000 0.0690 5 15 6 1953 2015 2015 0.188 0.188 0.175 0.100 0.00000 0.0000 0.0750 5 15 7 1953 2015 2015 0.188 0.188 0.165 0.100 0.00000 0.0000 0.0650 5 15

RCA/4N Next External

API 653 6.3.2

RCA/2N Next

UT

Inspection

API 653 6.3.3

Date(s)

Year Built or

Replaced

Inspection Year Thickness

Measured

Corrosion Rate(s)

API 653 6.3.2.1

(A-B)

C ou rs e

0.1000 0.1650 Ok ( 25,960 x 0.70 x 1.00)

0.1000 0.1690 Ok ( 25,960 x 0.70 x 1.00)

2.6 x ( 6.00 - 1 ) x 30.00 x 0.82

0.1000 0.1750 Ok ( 25,960 x 0.70 x 1.00)

0.1000 0.1700 Ok ( 25,960 x 0.70 x 1.00)

2.6 x ( 18.00 - 1 ) x 30.00 x 0.82

0.1000 0.1680 Ok ( 25,960 x 0.70 x 1.00)

2.6 x ( 24.00 - 1 ) x 30.00 x 0.82

2.6 x ( 12.00 - 1 ) x 30.00 x 0.82

2.6 x ( 0.00 - 1 ) x 30.00 x 0.82

25,9600.70

Welded Unknown

Welded Unknown0.00

70% Butt Weld

70% Butt Weld17.00

1.4167

25,960

25,960

25,9600.70

72.00…