Attachment J - Barksdale-Fac 6350-1 FINAL 2021.pdf

API 653 In-Service Inspection Report Barksdale Air Force Base, Bossier City, LA

Facility ID: 6350.01/Tank ID: Tank 1

Prepared for:

US Army Corps of Engineers Center of Expertise for Petroleum, Oils and Lubricants

(USACE POL-MCX)

08/12/2021

Inspection Report Prepared by:

API Standard 653 recommends this document containing valuable historical information be retained for the life of the tank.

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Table of Contents

ACRONYMS AND ABBREVIATIONS

GENERAL SUMMARY

INSPECTION DATE

STATE REGULATIONS

PREVIOUS INSPECTION DATES

RECOMMENDED FUTURE INSPECTION DATES (CALCULATIONS ARE PROVIDED)

GENERAL TANK INFORMATION

A. GENERAL PROJECT INFORMATION

1. API 653 Inspection

2. Site Information

B. TANK INSPECTION COMMENTS

1. Tank Construction / Shell

2. Tank Foundation

3. Tank Shell

4. Tank Appurtenances

5. Tank Coating

6. Tank Piping System

7. Fire Protection System

8. Secondary Containment

FINDINGS AND RECOMMENDATIONS

1. MANDATORY REPAIRS per API 653, UFC 3-460-01, or AW 78-24-27 Standards

2. REQUIRED REPAIRS to Fully Comply with API 653, UFC 3-460-01, or AW 78-24-27 Standards

3. RECOMMENDED REPAIRS as Part of Regular Maintenance

APPENDIX A: ENGINEERING CALCULATIONS AND DRAWINGS SHELL SETTLEMENT SURVEY

SHELL SETTLEMENT SURVEY

SHELL THICKNESS CALCULATION

SHELL UT MEASUREMENTS

ROOF UT MEASUREMENTS

SHELL NOZZLE / REPAD UT MEASUREMENTS

CRITICAL ZONE SHELL THICKNESS

SHELL DROP UT MEASUREMENTS

OSHA ACCESS STRUCTURE REPORT

APPENDIX B: 3-D DOCUMENTATION AND ANALYSIS

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ISOLATED SHELL DISTORTION

APPENDIX C: TANK DRAWINGS

APPENDIX D: API 653 CHECKLISTS FOR TANK INSPECTIONS

APPENDIX E: PHOTOGRAPHS

ACRONYMS AND ABBREVIATIONS

API American Petroleum Institute ASME American Society of Mechanical Engineers ASNT American Society of Non-Destructive Testing ATG Automatic Tank Gauge BBL Barrel CFR Code of Federal Regulations CP Cathodic Protection DFT Dry Film Thickness HLA High Level Alarm HLCS High Level Control Shutoff HHLA High-High Level Alarm LLA Low Level Alarm LLLA Low-Low Level Alarm MFL Magnetic Flux Leakage MT Magnetic Particle Testing NACE National Association of Corrosion Engineers NDT Non-Destructive Testing NFPA National Fire Protection Association PSI Pounds per Square Inch PT Penetrant Testing P/V Pressure/Vacuum RP Recommended Practice PST Product Saver Tank RT Radiography Testing TML Thickness Measurement Location TRV Thermal Relief Valve UFC Unified Facilities Criteria UFGS Unified Facilities Guide Specifications ULS Ultra Low Sulfur UT Ultrasonic Testing VT Visual Testing

GENERAL SUMMARY

An API 653 In-Service inspection of Tank #6350.01 was completed on July 21, 2021 to evaluate the tank’s integrity, collect data, and establish a database for future inspections and evaluations. The tank meets the requirements for structural integrity in accordance with the API 653. The project scope required the inspection to include the evaluation of many aspects of the tank and its ancillary equipment to address tank integrity, including but not limited to, secondary containment, spill prevention, military standards related issues as directed by UFC 3-460-01 Table 8-1 and other applicable industry standards.

API 653 provides inspection and evaluation criteria required to determine the suitability for continued service of an AST until the next scheduled inspection. The purpose of conducting inspections is to identify the condition of and changes to the AST.

INSPECTION DATE

API In-Service (External) Inspection Date: 21 July 2021 Equipment Used:

Manufacturer: Olympus Model Number:38DL Calibration Method:

Steel Calibration Wedge SN 107514

Manufacturer: Trimble Model Number: SX10 Calibration Method: N/A

Manufacturer: Spectra Precision Model Number: LL300N Calibration Method: Self Leveling

Inspector(s): Daniel Elliott, Erik Eskelsen

STATE REGULATIONS

State Regulation for API In-Service Tank Inspections N/A State Regulation for API Out-of-Service Tank Inspections N/A

NOTE: If there are no state regulations for tank inspections then N/A shall reside in-place of the number of years between inspections. If state regulations reside, the recommended future inspections dates shall be based on whichever is more stringent between the API inspector’s calculations and the State regulations.

PREVIOUS INSPECTION DATES

API Out-of-Service (Internal) Inspection Date: March 2011 (Assumed) API In-Service (External) Inspection Date: Unknown

RECOMMENDED FUTURE INSPECTION DATES (CALCULATIONS ARE PROVIDED)

API Out-of-Service (Internal) Inspection Date: December 2031 API 653: 653 6.4.2.1 / UFC 3-460-03: 8-4.1(e)

API Ultrasonic Thickness Inspection Date: July 2036

API 653: API 653 6.3.3.2 / UFC 3-460-03: N/A

API In-Service (External) Inspection Date: July 2026 API 653: 6.3.2.1 / UFC 3-460-03: 8-4.1(d)

Daniel Elliott Project Manager Pacific Engineering & Consulting, Inc.

API 653 Certified Inspector No. 70788

Jared Shuman, PE Principal Engineer Pacific Engineering & Consulting, Inc.

API 653 Certified Inspector No. 56100

GENERAL TANK INFORMATION

ITEM DESCRIPTION

Owner U.S. Air Force Location Barksdale Air Force Base Facility Number Tank No. 6350.01 Tank Number Tank 1 State / Country Louisiana / U.S.A.

City Bossier City Inspection Date July 19th – July 21st 2021 Tank Manufacturer Woods Tank Inc.

Design Standard API 650 Date of Construction 1998 Tank Contents Jet Fuel F-24 Tank Serial Number Unknown Tank Diameter 32’ – 9 ½” Shell Height 39’ – 4” Product Height 20’ – 6” Tank Capacity 4,400 bbl Nominal Foundation Elevated Concrete Ring wall Construction Bottom Bottom Lap-welded, Cone down

Shell Shell (5) Butt-welded shell courses

Floating Roof Honeycomb pan Fixed Roof Lap-welded plates cone up plate

Material Bottom Carbon steel of unknown grade Shell Carbon steel, A36 (Per Tank Data Plate) Floating Roof Aluminum Fixed Roof Carbon Steel, A36

Cathodic Protection Impressed current per previous CP report Interior Coating System Unknown Exterior Coating System Standard epoxy coatings; date unknown Level Gauging Honeywell Enraf ATG System Overfill Protection None.

Piping Receipt 10” Carbon Steel

Issue 14” Carbon Steel Low Suction 4” Carbon steel Water Draw-Off 1” Carbon Steel

Level Alarms HHLA, HLA Type of Internal Floating Roof Aluminum honeycomb floating pan

A. GENERAL PROJECT INFORMATION

1. API 653 Inspection This project will perform API 653 Inspections of various tanks at facilities throughout the United States.

Additional consideration is given to Federal, State, and Local regulations as well as applicable Military Criteria and general industry standards.

For Tank 6350.01, an API Standard 653 In‐service (External) Inspection was performed.

2. Site Information On July 19, 2021 Pacific Engineering & Consulting, Inc. performed API 653 In‐Service (External) Inspection of Tank 6350.01 located at Barksdale Air Force Base, Bossier City, Louisiana. Barksdale AFB’s mission is to provide nuclear deterrence, combat power, and combat support anywhere at any time.

B. TANK INSPECTION COMMENTS

1. Tank Construction / Shell Tank 6350.01 is a nominal 4,400 bbl, 32’-9.5” diameter by 39’-4” tall, F-24 (Jet-A additized), aboveground vertical storage tank. The tank was constructed in 1998 by Woods Tank, Inc. to API 650 as indicated by the information on the tank data plate. The information stenciled on the manhole indicated that the tank was last inspected out-of-service and cleaned in 2011. As‐built drawings of the original construction were not available to the inspector.

2. Tank Foundation The tank rests on a raised concrete ring wall foundation with approximately 2’ feet visible above the containment floor. The foundation was visually evaluated for broken concrete, spalling, cracks, and vegetation against the bottom of the tank. The tank chime-to-foundation seal is deteriorating and must be replaced to prevent water intrusion. A tell-tale leak detection system is installed at the perimeter of the ring wall. Water was found during the inspection. A shell settlement survey, in accordance with Appendix B of API Standard 653, found settlement within tolerance. Settlement results are listed in Appendix A. The tank has an impressed current CP system.

3. Tank Shell The vertical and cylindrical shell consists of five butt‐welded courses constructed of A36 carbon steel.

The exterior of the shell was visually inspected and evaluated for plumbness, roundness, peaking and banding. A 3D-scan of the exterior tank shell demonstrated that roundness was within tolerances established by API 650 7.5.3 for most of the tank. Four (4) areas were slightly above the listed tolerance. Due to the length of time the tank has been in service and no apparent problems with the floating roof, this out-of-tolerance is not significantly impacting the tank. See Appendix B. The critical zone and accessible shell plates were examined using an ultrasonic thickness meter. No general corrosion issues were found during the inspection. The results are listed in Appendix A.

4. Tank Appurtenances

a. Tank Roof The coating system on the tank roof and appurtenances appear to be in good to moderate condition with moderate coating failure and corrosion observed on the roof, deck plate, inspection hatches, nozzle flanges, nuts, and bolts, etc. Evidence of water ponding was observed in isolated depressions along roof perimeter. The roof plates were examined using an ultrasonic thickness meter. No general corrosion issues were found during the inspection. The results are listed in Appendix A. No scaffold-cable supports, as described in API 650 Fig 5-22, are installed on the roof. UFC 3-460-01 Table 8-1 requires two (2) scaffold-cable supports. A floating roof and eight (8) perimeter vent/inspection hatches are installed on this tank. The four perimeter vents on the roof function as inspection hatches. The tank has a 12-inch atmospheric vent with a weather hood and bird screen installed. The vent is located in the center of the tank and the bird screen is well attached.

b. Gauging The tank has a Honeywell Enraf ATG installed through a 12‐inch aluminum gauge well. The tank also has a Vito water probe installed to monitor for the presence of water and temperature. The 10-inch manual gauge well/sample hatch was inspected. The tank no longer has a tape level gauge installed. Per base personnel the tape gauges were removed approximately three years ago.

c. Level Alarms The high and high-high level alarms are mounted on the tank shell, and are accessible from the circumferential stairway. There were no low or low-low level alarms mounted on the shell at the time of the investigation. However, there are shell nozzles in place to provide a low level alarm chamber. Automatic overfill prevention is not provided.

d. Manways

There are two (2) 36 inch manways on the shell located approximately 180 degrees across from each other.

e. Water Draw-Off A manual 1-inch low point water drain is provided for water/low product removal. The appurtenances was in the closed position and locked.

f. Stairs and Platforms The tank’s fixed steel roof is accessible by a circumferential stairway mounted on the shell of the tank. There are several areas of coating failure and corrosion on the stairway and the platforms. The bottom stair of the circumferential stairway is approximately 8.5 inches above the landing. OSHA requires the rise to be consistent with the rest of the stairs.

g. Grounding and Bonding There are four (4) grounding cables connected to ground lugs welded to the tank shell.

5. Tank Coating The external coating system appeared to be a standard military coating system (epoxy-epoxy-polyurethane). Localized minor coating failure and corrosion was observed on the surface of the circumferential stairway, reinforcing plate weep holes, tank roof and roof appurtenances.

6. Tank Piping System Fuel is received through a 10‐inch carbon steel piping system from the truck off-loading area and is issued through a 14-inch carbon steel piping system. A low-suction system is installed.

The 10-inch receipt piping consists of one block valve. There is no high liquid level shut-off valve. A 1-inch carbon steel thermal relief system is installed to prevent thermal expansions. AW 078-24-27 requires stainless steel thermal relief piping. No blind flange for sidestream filtration as required by

AW 078-24-27.

The 14-inch carbon steel issue piping is equipped with a General Valve Twin Seal double-block and bleed valve. A 1-inch carbon steel thermal relief system is installed to prevent thermal expansions. AW 078-24-27 requires stainless steel thermal relief piping.

7. Fire Protection System There are fire hydrants noted within 300 feet of this tank.

8. Secondary Containment Secondary containment is providedconsists of vertical concrete dike walls. The secondary containment was visually evaluated during the inspection for structural damage and adequate drainage controls.

The containment appears to be of sufficient size to contain a total tank loss plus freeboard.

FINDINGS AND RECOMMENDATIONS

1. MANDATORY REPAIRS per API 653, UFC 3-460-01, or AW 78-24-27 Standards Mandatory repairs represent items that require immediate attention, in order to prevent imminent risk to system operators, equipment integrity, or the adjacent environment. The tank should remain out of service until these repairs are completed.

2. REQUIRED REPAIRS to Fully Comply with API 653, UFC 3-460-01, or AW 78-24-27 Standards Short-term Repairs that directly relate to the long-term preservation of the asset. Short-term repairs represent items that should be addressed in a timely manner in order to prevent future potential risks to system operators, equipment integrity, or the adjacent environment. These items may be required by Federal, State and Local Codes or by Military Criteria.

a. TITLE: Carbon Steel Thermal Relief Piping

OBSERVATION: Thermal Relief system on issue and receipt piping is not stainless steel.

REFERENCE: AW-78-24-27 Page D.10 Figure 4 RECOMMENDATION: Install thermal relief system as described in AW-78-24-27 Page D.10 Figure 4.

b. TITLE: Upgrade Water Draw-off Piping OBSERVATION: The water draw-off piping consists of a single 1-inch pipe with a ball valve.

REFERENCE: AW 78-24-27 Page G.05 Note 2 / AW 78-24-27 Page D.13 Figure 5 RECOMMENDATION: Add a 2-inch nozzle, enlarge the existing 1-inch nozzle to a 2-inch, and upgrade water draw-off system as indicated in AW 78-24-27 Page D.13 Figure 5.

c. TITLE: Provide Low-Low and Low Independent Level Alarms OBSERVATION: This tank does not have low-low or low independent level alarms.

REFERENCE: UFC 3-460-01, Table 8-1, Level Alarms (i)

AW 78-24-27 Page D.12 Figure 1.

RECOMMENDATION: Install independent low and low-low level alarms.

No Image Available

d. TITLE: No Scaffold Support OBSERVATION: No scaffold supports are provided on the tank.

REFERENCE: UFC 3-460-01 Table 8-1 Cable Supports (jj) RECOMMENDATION: Add two (2) scaffold supports per API 650 near the center of the tank.

(This can be a long-term repair)

No Image Available

e. TITLE: Install Tape Gauge OBSERVATION: No Tape Gauge is currently installed.

REFERENCE: UFC 3-460-01, Table 8-1 Gauge/Gauge Hatch/Stilling Wells (q)

AW 78-24-27 Page D.07 Figure 1.

RECOMMENDATION: A mechanical tape level gauge calibrated in 1/16-inch (2 mm) graduations mounted at 60 inches (1500 mm) above the walking surface must be installed.

f. TITLE: Install a Hydraulically Operated Diaphragm Control Valve

OBSERVATION: No Control Valve is currently installed.

REFERENCE: UFC 3-460-01, Table 8-1 Overfill Prevention (bb)

AW 78-24-27 Page G.05 Note 3 RECOMMENDATION: On vertical tanks, a hydraulically operated diaphragm control valve must be installed. The valve typically closes midway between high and high high levels, but ensure valve closes no later than on high-high level.

g. TITLE: Install davits on manholes OBSERVATION: No davits installed with manholes REFERENCE: UFC 3-460-01, Table 8-1 Manhole (f)

AW 78-24-27 Page D.10 Figure 3 RECOMMENDATION: The two (2) manways are required to be supported by davits.

h. TITLE: Enlarge center vent to 24” OBSERVATION: A 12” center vent is currently installed.

REFERENCE: AW 78-24-27 Page D.09 Note 2 RECOMMENDATION: On vertical tanks, a 24” center vent is required.

3. RECOMMENDED REPAIRS as Part of Regular Maintenance Long-term Repairs that directly relate to repair/upgrade of an asset to bring it up to the current standard from the standard at time of construction. Long-term Repairs represent items that should be addressed in a timely manner in order to prevent future potential risks to system operators, equipment integrity, or the adjacent environment.

a. TITLE: Repair Coating System on Tank Roof, Roof Appurtenances, Stairway and Associated

Piping OBSERVATION: Localized minor coating failure and corrosion was observed on the surface of the circumferential stairway, tank roof and roof appurtenances, etc.

REFERENCE: UFC 3-460-01, Section 8-3.10, requires the exterior of fuel storage tanks and appurtenances to be coated.

RECOMMENDATION: Remove corrosion from all isolated areas of deterioration. Clean and prep all the areas that require coating repairs, approximately 25 sqft, and apply a compatible coating system that meets military criteria. Corroded nuts and bolts should be removed and replaced with corrosion resistant nuts and bolts.

b. TITLE: Monitor Roof Drainage

OBSERVATION: There is evidence of water ponding in areas on the roof.

REFERENCE: DoD AST Standard Design, AW 78-24-27 Page D.05 Note 1 requires roofs to be sloped to prevent water from ponding to prevent coating deterioration and plate corrosion.

RECOMMENDATION: Monitor the roof to ensure any water that may pond is not causing deterioration of the roof.

APPENDIX A: ENGINEERING CALCULATIONS

AND DRAWINGS SHELL SETTLEMENT

SURVEY

SHELL SETTLEMENT SURVEY

Tank Specification Unit D Diameter 32.75 ft.

C Circumference 102.887 ft.

H Height 39.33 ft.

ΔY Age 23 years N Data Point Taken 8

Nmin Minimum of Data Points required 8 API-653 12.5.2 L Arc Length between measurement points 12.861 ft.

Y Specified Minimum Yield Strength 36000 psi API 653 Table 4-1

R2 Coefficient of determination 0.9003 API 653 B.2.2.4(e)

|S|Max Maximum permissible out-of-plane deflection 0.0185 ft.

|S| Largest Calculated |S| 0.0059 ft.

Data Points, N

Actual (ft)

Optimum

(ft) Ui Ui+1 Ui-1 Si |S| Result

1 1.4115 1.4113 0.000158 -0.00092 -0.00191 0.001572 0.001572 PASS

2 1.4167 1.4176 -0.00092 0.003748 0.000158 -0.00287 0.002874 PASS

3 1.4271 1.4233 0.003748 -0.0033 -0.00092 0.005859 0.005859 PASS

4 1.4219 1.4252 -0.0033 -0.00016 0.003748 -0.0051 0.005097 PASS

5 1.4219 1.4220 -0.00016 0.000921 -0.0033 0.001032 0.001032 PASS

6 1.4167 1.4157 0.000921 0.00146 -0.00016 0.00027 0.00027 PASS

7 1.4115 1.4100 0.00146 -0.00191 0.000921 0.001953 0.001953 PASS

8 1.4063 1.4082 -0.00191 0.000158 0.00146 -0.00272 0.002716 PASS

1.41

1.42

1.43

1.42 1.42

1.42

1.41

1.41

1.41

1.4

1.41

1.42

1.43

1.44

1.45 1 2 3 4 5 6 7 8 1

N Data Points, Equally Sapced Apart Tank Circumference (πD)

Shell Settlement Evaluation

Actual Edge Settlement Optimum Cosine Curve

SHELL THICKNESS CALCULATION

Tank Information Reference Owner/Operator United States Air Force Facility ID 6350.01 Tank ID 1 Inspection Date 7/21/2021 Plate Specification A36 Material Carbon Steel Manufactured Date 1998

Tank Specification Units D Diameter 32.75 ft.

H Height 39.33 ft.

G Specific Gravity 0.84 N/A ΔY Age 23 years

Shell Plate Properties Units T Specified Minimum Tensile Strength 58000 psi API 653 Table 4-1 Y Specified Minimum Yield Strength 36000 psi API 653 Table 4-1 S Maximum Allowable Stress (Course 1 &2) 24900 psi API 653 Table 4-1 S Maximum Allowable Stress (All Other Courses) 27400 psi API 653 Table 4-1

Course No.

Plate Specification

Course Height (ft)

Product Height (ft)

Maximum Allowable Stress (psi)

Joint Efficiency

Previous Measured Thickness (in)

Current Measured Thickness (in)

Minimum Acceptable Thickness (in)

1 A36 8 40 24900 1 0.231 0.232 0.112 2 A36 8 32 24900 1 0.235 0.235 0.100 3 A36 8 24 27400 1 0.238 0.237 0.100 4 A36 8 16 27400 1 0.237 0.236 0.100 5 A36 8 8 27400 1 0.237 0.235 0.100

Corrosion Rate (in/yr)*

Remaining Life (yrs)

Next Visual Inspection (yrs)

Next Ultrasonic Inspection (yrs)

0.0002 599.86 5.00 15.00

0.0002 675.00 5.00 15.00

0.0002 685.00 5.00 15.00

0.0002 680.00 5.00 15.00

0.0002 675.00 5.00 15.00

*Let Cr=0.0002 inches per year for calculation purposes.

0.050

0.070

0.090

0.110

0.130

0.150

0.170

0.190

0.210

0.230

0.250

1 2 3 4 5

Th ic kn es s (in

Course

Shell Life Evaluation

Previous Measured Thickness (in)

Current Measured Thickness (in)

Minimum Acceptable Thickness (in)

SHELL UT MEASUREMENTS

Location No. Thickness (in) 1-1 0.251 1-1 0.246 1-1 0.247 1-1 0.252 1-1 0.253 1-2 0.253 1-2 0.248 1-2 0.240 1-2 0.251 1-2 0.241 1-3 0.249 1-3 0.243 1-3 0.243 1-3 0.243 1-3 0.243 1-4 0.238 1-4 0.239 1-4 0.241 1-4 0.241 1-4 0.240

ROOF UT MEASUREMENTS

Roof Ultrasonic Thickness Readings

Plate No

Thickness (in)

Plate Type Point Numbers

1 2 3 4 5 1-1 .237 .238 .237 .237 .237 A 1-2 .238 .237 .238 .239 .238 B 2-1 .237 .237 .237 .237 .237 E 2-2 .240 .239 .240 .241 .240 E 3-1 .254 .235 .254 .254 .254 E 3-2 .256 .254 .255 .256 .255 E 4-1 .238 .237 .239 .238 .238 E 4-2 .237 .237 .237 .238 .237 E 5-1 .250 .251 .249 .250 .251 C 5-2 .234 .235 .237 .235 .235 D

SHELL NOZZLE / REPAD UT MEASUREMENTS

Nozzle Size (in) Description 0° 90° 180° 270° Average

A 36 Manway 0.528 0.525 0.524 0.525 0.526 B 1.25 Plugged Nozzle 0.335 0.334 0.330 0.331 0.333 R 1.25 Plugged Nozzle 0.334 0.330 0.332 0.331 0.332 Q 36 Manway 0.536 0.540 0.535 0.352 0.491 L 1.25 Water Draw 0.318 0.325 0.320 0.316 0.320 D 4 Low Suction 0.383 0.400 0.395 0.390 0.392 E 14 Issue 0.585 0.570 0.572 0.580 0.577 F 10 Receipt 0.550 0.560 0.555 0.548 0.553

Nozzle Repad Repad Type Top Right Bottom Left Average

A 36 Yes E 0.350 0.354 0.351 0.354 B 1.25 No N/A N/A N/A N/A N/A R 1.25 No N/A N/A N/A N/A N/A Q 36 Yes E 0.350 0.352 0.349 0.352 L 1.25 No N/A N/A N/A N/A N/A D 4 Yes E 0.290 0.300 0.294 0.302 E 14 Yes E 0.280 0.280 0.283 0.285 F 10 Yes E 0.285 0.285 0.280 0.288

A B C D E

CRITICAL ZONE SHELL THICKNESS

1 0.257 2 0.252 3 0.244 4 0.244 5 0.237 6 0.237 7 0.237 8 0.243 9 0.243

10 0.243 11 0.247 12 0.241 13 0.241 14 0.241 15 0.241 16 0.240 17 0.240 18 0.240 19 0.240 20 0.238 21 0.238 22 0.238 23 0.238 24 0.248 25 0.248 26 0.251 27 0.251 28 0.251 29 0.251 30 0.238 31 0.238 32 0.238 33 0.238 34 0.238 35 0.237 36 0.237 37 0.237 38 0.242 39 0.242 40 0.242 41 0.242

Location No. Thickness (in) 42 0.242 43 0.242 44 0.238 45 0.238 46 0.238 47 0.238 48 0.240 49 0.240 50 0.240 51 0.243 52 0.243 53 0.240 54 0.240 55 0.246 56 0.246 57 0.246 58 0.240 59 0.240 60 0.241 61 0.241 62 0.241 63 0.251 64 0.251 65 0.251 66 0.251 67 0.242 68 0.242 69 0.242 70 0.242 71 0.242 72 0.242 73 0.240 74 0.240 75 0.240 76 0.240 77 0.240 78 0.240 79 0.243 80 0.243 81 0.243 82 0.240

Location No. Thickness (in) 83 0.240 84 0.244 85 0.244 86 0.244 87 0.241 88 0.241 89 0.241 90 0.249 91 0.249 92 0.249 93 0.252 94 0.252 95 0.252 96 0.252 97 0.240 98 0.240 99 0.240

100 0.244 101 0.244 102 0.244 103 0.244 104 0.244 105 0.244

SHELL DROP UT MEASUREMENTS

5-3 0.234 5-3 0.236 5-3 0.236 5-3 0.236 5-3 0.235 4-2 0.236 4-2 0.236 4-2 0.236 4-2 0.236 4-2 0.236 3-1 0.237 3-1 0.237 3-1 0.237 3-1 0.237 3-1 0.237 2-1 0.235 2-1 0.235 2-1 0.235 2-1 0.235 2-1 0.235 1-2 0.233 1-2 0.233 1-2 0.233 1-2 0.233 1-2 0.233

OSHA ACCESS STRUCTURE REPORT

OSHA Stairway Data

Handrail Actual (in) OSHA Req'd min (in) max (in)

Handrail Height 30 SAT 30 34 Step Width 26 SAT 22 N/A Step Rise 8.5 SAT N/A N/A Bottom Step Rise 8.5 SAT 6.5 9.5

APPENDIX B: 3-D DOCUMENTATION AND

ANALYSIS

The purpose of this study is to determine the tank shell locations of buckled areas, flat spots, and peaking and banding at weld joints. Shell distortion can be caused by many conditions such as foundation settlement, over- or under-pressuring, high wind, poor shell fabrication, or various repair techniques or tank modifications.

ISOLATED SHELL DISTORTION

Roundness Report Course 1: Weld 1 +0.5000 ft

Station Radius Delta(ft) Pass/Fail 0.0417ft

1 0.0032 PASS

2 -0.0706 FAIL

3 -0.1325 FAIL

4 0.0171 PASS

5 0.0128 PASS

6 -0.0305 PASS

7 -0.0396 PASS

8 0.0381 PASS

9 0.0249 PASS

10 -0.0243 PASS

11 -0.0693 FAIL

12 -0.0063 PASS

13 0.0253 PASS

14 0.0302 PASS

15 0.0494 FAIL

16 0.0213 PASS

APPENDIX C: TANK DRAWINGS

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TANK 1/ FACILITY 6350.01 BARKSDALE AIR FORCE BASE

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SIZE A

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DWG NO

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AutoCAD SHX Text DRAWN Erik Eskelsen

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DATE 8/6/2021

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SCALE " = 1' 316" = 1'

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SHEET 1 OF 2

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JET FUEL F-24

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AutoCAD SHX Text 32'-9 "12"

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LEGEND

AutoCAD SHX Text A. 12" CENTER VENT 12" CENTER VENT B. 6" HONEY ENRAF VITO MTT 6" HONEY ENRAF VITO MTT INTERFACE MODEL 762 C. 12" HONEYWELL ENRAF MODEL 12" HONEYWELL ENRAF MODEL 854 ATG D. 36" MANWAY 36" MANWAY E. 10" GAUGE HATCH 10" GAUGE HATCH F. 26" X 74" ROOF ACCESS 26" X 74" ROOF ACCESS G. 1 " CAPPED NOZZLE 1 " CAPPED NOZZLE 14" CAPPED NOZZLE H. 1 " TAPE GAUGE NOZZLE 1 " TAPE GAUGE NOZZLE 12" TAPE GAUGE NOZZLE I. 2 " CAPPED NOZZLE 2 " CAPPED NOZZLE 12" CAPPED NOZZLE J. 30" ROOF VENT 30" ROOF VENT K. 8" HATCH8" HATCH

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TANK 1/ FACILITY 6350.01 BARKSDALE AIR FORCE BASE

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SIZE A

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DWG NO

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REV

AutoCAD SHX Text DRAWN Erik Eskelsen

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DATE 8/6/2021

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SCALE " = 1' 116" = 1'

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SHEET 2 OF 2

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JET FUEL F-24

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LEGEND

AutoCAD SHX Text A. 36" MANWAY 36" MANWAY B. 1 " PLUGGED NOZZLE 1 " PLUGGED NOZZLE 14" PLUGGED NOZZLE C. ADALET BRACKET ADALET BRACKET D. 4" LOW SUCTION 4" LOW SUCTION E. 14" ISSUE 14" ISSUE F. 10" RECEIPT 10" RECEIPT G. 1" HIGH LEVEL ALARM 1" HIGH LEVEL ALARM H. 1" PLUG NOZZLE 1" PLUG NOZZLE I. VENT VENT J. BRACKETS FOR PIPE GAUGE BRACKETS FOR PIPE GAUGE K. ATG BRACKET ATG BRACKET L. 1 " WATER DRAWOFF 1 " WATER DRAWOFF 14" WATER DRAWOFF M. BRACKET BRACKET N. GROUNDING WIRE BRACKET GROUNDING WIRE BRACKET O. ANCHOR CHAIRS ANCHOR CHAIRS P. STAIRS STAIRS Q. 36" MANWAY 36" MANWAY R. 1 " PLUGGED NOZZLE1 " PLUGGED NOZZLE14" PLUGGED NOZZLE

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5-4

APPENDIX D: API 653 CHECKLISTS FOR TANK

INSPECTIONS

Tank In-Service Inspection Checklist

Item Completed

X C.1.1 Foundation

Measure foundation levelness and bottom elevations (see Annex B for extent of measurements). X C.1.1.1 Concrete Ring a Inspect for broken concrete, spalling, and cracks, particularly under backup bars used in welding butt-welded annular rings under the shell.

X b Inspect drain openings in ring, back of waterdraw basins and top surface of ring for indications of bottom leakage. X c Inspect for cavities under foundation and vegetation against bottom of tank. X d Check that runoff rainwater from the shell drains away from tank. X e Check for settlement around perimeter of tank. X

C.1.1.2 Asphalt a Check for settling of tank into asphalt base which would direct runoff rain water under the tank instead of away from it.

b Look for areas where leaching of oil has left rock filler exposed, which indicates hydrocarbon leakage. N/A

C.1.1.3 Oiled Dirt or Sand

Check for settlement into the base which would direct runoff rain water under the tank rather than away from it.

N/A

C.1.1.4 Rock

Presence of crushed rock under the steel bottom usually results in severe underside corrosion.

Make a note to do additional bottom plate examination (ultrasonic, hammer testing, or turning of coupons) when the tank is out of service.

N/A

C.1.1.5 Site Drainage a Check site for drainage away from the tank and associated piping and manifolds. X b Check operating condition of the dike drains. X

C.1.1.6 Housekeeping Inspect the area for buildup of trash, vegetation, and other inflammables buildup. X

C.1.1.7 Cathodic Protection Review cathodic protection potential readings. X

C.1.2 Shells C.1.2.1 External Visual Inspection a Visually inspect for paint failures, pitting, and corrosion. X b Clean off the bottom angle area and inspect for corrosion and thinning on plate and weld. X c Inspect the bottom-to-foundation seal, if any. X

Completed

X C.1.2.2 Internal (Floating Roof Tank)

Visually inspect for grooving, corrosion, pitting, and coating failures. N/A C.1.2.3 Riveted Shell Inspection a Inspect external surface for rivet and seam leaks. N/A b Locate leaks by sketch or photo (location will be lost when shell is abrasive cleaned for painting). N/A c Inspect rivets for corrosion loss and wear. N/A d Inspect vertical seams to see if they have been full fillet lap-welded to increase joint efficiency. N/A e If no record exists of vertical riveted seams, dimension and sketch (or photograph) the rivet pattern: number of rows, rivet size, pitch length, and note whether the joint is butt-riveted or lap-riveted.

N/A

C.1.2.4 Wind Girder (Floating Roof Tanks) a Inspect wind girder and handrail for corrosion damage (paint failure, pitting, corrosion product buildup), especially where it occurs at tack-welded junction, and for broken welds. N/A b Check support welds to shell for pitting, especially on shell plates. N/A c Note whether supports have reinforcing pads welded to shell. N/A

C.1.3 Shell Appurtenances C.1.3.1 Manways and Nozzles a Inspect for cracks or signs of leakage on weld joint at nozzles, manways, and reinforcing plates. X b Inspect for shell plate dimpling around nozzles, caused by excessive pipe deflection. X c Inspect for flange leaks and leaks around bolting. X d Inspect sealing of insulation around manways and nozzles. X e Check for inadequate manway flange and cover thickness on mixer manways. X

C.1.3.2 Tank Piping Manifolds a Inspect manifold piping, flanges, and valves for leaks. X b Inspect fire fighting system components. X c Check for anchored piping which would be hazardous to the tank shell or bottom connections during earth movement. X d Check for adequate thermal pressure relief of piping to the tank. X e Check operation of regulators for tanks with purge gas systems. N/A f Check sample connections for leaks and for proper valve operation. X g Check for damage and test the accuracy of temperature indicators. X h Check welds on shell-mounted davit clips above valves 6 in. and larger. N/A

C.1.3.3 Autogauge System a Inspect autogauge tape guide and lower sheave housing (floating swings) for leaks. N/A b Inspect autogauge head for damage. N/A c Bump the checker on autogauge head for proper movement of tape. N/A d Identify size and construction material of autogauge tape guide (floating roof tanks). N/A e Ask operator if tape tends to hang up during tank roof movement (floating roof tanks). N/A

Completed

X f Compare actual product level to the reading on the autogauge (maximum variation is 2 in.). N/A g On floating roof tanks, when the roof is in the lowest position, check that no more than two ft of tape are exposed at the end of the tape guide. N/A h Inspect condition of board and legibility of board-type autogauges. N/A i Test freedom of movement of marker and float. N/A

C.1.3.4 Shell-Mounted Sample Station a Inspect sample lines for function of valves and plugging of lines, including drain or return-to-tank line. X b Check circulation pump for leaks and operating problems. N/A c Test bracing and supports for sample lines and equipment. X

C.1.3.5 Heater (Shell Manway Mounted) Inspect condensate drain for presence of oil indicating leakage. N/A

C.1.3.6 Mixer a Inspect for proper mounting flange and support. N/A b Inspect for leakage. N/A c Inspect condition of power lines and connections to mixer. N/A

C.1.3.7 Swing Lines: Winch Operation a Nonfloating. Raise, then lower the swing line with the winch, and check for cable tightness to confirm that swing line lowered properly. N/A b Floating. With tank half full or more, lower the swing line, then let out cable and check if swing has pulled cable tight, indicating that the winch is operating properly. N/A c Indicator. Check that the indicator moves in the proper direction: Floating swing line indicators show a lower level as cable is wound up on the winch. Non-floating swing line indicators show the opposite.

N/A

C.1.3.8 Swing Lines: External Guide System Check for leaks at threaded and flanged joints. N/A

C.1.3.9 Swing Lines: Identify Ballast Varying Need Check for significant difference in stock specific gravity. N/A

C.1.3.10 Swing Lines: Cable Material and Condition a For nonstainless steel cable, check for corrosion over entire length. N/A b All cable: check for wear or fraying. N/A

C.1.3.11 Swing Lines: Product Sample Comparison Check for water or gravity differences that would indicate a leaking swing joint. N/A

C.1.3.12 Swing Lines: Target

Target should indicate direction of swing opening (up or down) and height above bottom where suction will be lost with swing on bottom support. N/A

Completed

X C.1.4 Roofs

C.1.4.1 Deck Plate Internal Corrosion

For safety, before accessing the roof, check with ultrasonic instrument or lightly use a ball peen hammer to test the deck plate near the edge of the roof for thinning. (Corrosion normally attacks the deck plate at the edge of a fixed roof and at the rafters in the center of the roof first.)

X

C.1.4.2 Deck Plate External Corrosion Visually inspect for paint failure, holes, pitting, and corrosion product on the roof deck. X

C.1.4.3 Roof Deck Drainage

Look for indication of standing water. (Significant sagging of fixed roof deck indicates potential rafter failure. Large standing water areas on a floating roof indicate inadequate drainage design or, if to one side, a nonlevel roof with possible leaking pontoons.)

C.1.4.4 Level of Floating Roof

At several locations, measure distance from roof rim to a horizontal weld seam above the roof. A variance in the readings indicates a nonlevel roof with possible shell out-of-round, out-of-plumb, leaking pontoons, or hang-up. On small diameter tanks, an unlevel condition can indicate unequal loading at that level.

N/A

C.1.4.5 Gas Test Internal Floating Roof

Test for explosive gas on top of the internal floating roof. Readings could indicate a leaking roof, leaking seal system, or inadequate ventilation of the area above the internal floating roof. N/A

C.1.4.6 Roof Insulation a Visually inspect for cracks or leaks in the insulation weather coat where runoff rain water could penetrate the insulation. N/A b Inspect for wet insulation under the weather coat. N/A c Remove small test sections of insulation and check roof deck for corrosion and holes near the edge of the insulated area. N/A

C.1.4.7 Floating Roof Seal Systems a Inspect the condition of the seal, measure and record maximum rim spaces and seal to- shell gaps around the full roof circumference at the level of inspection. N/A

NOTE Inspection of the seal and measurement of the rim spaces and seal-to-shell gaps at more than one level may be necessary to more fully determine if any problems exist at other levels of tank operation).

Completed

X b Measure and record annular space at 30-ft spacing (minimum of four quadrants) around roof and record. Measurements should be taken in directly opposite pairs. N/A

1) _______ _______ Opposite pair 1. N/A

2) _______ _______ Opposite pair 2. N/A c Check if seal fabric on primary shoe seals is pulling shoes away from shell (fabric not wide enough). N/A d Inspect fabric for deterioration, holes, tears, and cracks. N/A e Inspect visible metallic parts for corrosion and wear. N/A f Inspect for openings in seals that would permit vapor emissions. N/A g Inspect for protruding bolt or rivet heads against the shell. N/A h Pull both primary and secondary seal systems back all around the shell to check their operation. N/A i Inspect secondary seals for signs of buckling or indications that their angle with the shell is too shallow. N/A j Inspect wedge-type wiper seals for flexibility, resilience, cracks, and tears. N/A C.1.5 Roof Appurtenances

C.1.5.1 Sample Hatch a Inspect condition and functioning of sample hatch cover. X b On tanks governed by Air Quality Monitoring District rules, check for the condition of seal inside hatch cover. N/A c Check for corrosion and plugging on thief and gauge hatch cover. X d Where sample hatch is used to reel gauge stock level, check for marker and tab stating hold-off distance. N/A e Check for reinforcing pad where sample hatch pipe penetrates the roof deck. X f On floating roof sample hatch and recoil systems, inspect operation of recoil reel and condition of rope. N/A g Test operation of system. N/A h On ultra clean stocks such as JP4, check for presence and condition of protective coating or liner inside sample hatch (preventing rust from pipe getting into sample). N/A

C.1.5.2 Gauge Well a Inspect visible portion of the gauge well for thinning, size of slots, and cover condition. X b Check for a hold-off distance marker and tab with hold-off distance (legible). N/A c On floating roofs, inspect condition of roof guide for gauge well, particularly the condition of the rollers for grooving. N/A d If accessible, check the distance from the gauge well pipe to the tank shell at different levels. N/A e If tank has a gauge well washer, check valve for leakage and for presence of a bull plug or blind flange. N/A

C.1.5.3 Fixed Roof Scaffold Support Inspect scaffold support for corrosion, wear, and structural soundness. X

C.1.5.4 Autogauge: Inspection Hatch and Guides (Fixed Roof) a Check the hatch for corrosion and missing bolts. X

Completed

X b Look for corrosion on the tape guide’s and float guide’s wire anchors. X

C.1.5.5 Autogauge: Float Well Cover a Inspect for corrosion. X b Check tape cable for wear or fraying caused by rubbing on the cover. X

C.1.5.6 Sample Hatch (Internal Floating Roof) a Check overall conditions. N/A b When equipped with a fabric seal, check for automatic sealing after sampling. N/A c When equipped with a recoil reel opening device, check for proper operations. N/A

C.1.5.7 Roof-mounted Vents (Internal Floating Roof) Check condition of screens, locking and pivot pins. N/A

C.1.5.8 Gauging Platform Drip Ring

On fixed roof tanks with drip rings under the gauging platform or sampling area, inspect for plugged drain return to the tank. N/A

C.1.5.9 Emergency Roof Drains

Inspect vapor plugs for emergency drain: that seal fabric discs are slightly smaller than the pipe ID and that fabric seal is above the liquid level. N/A

C.1.5.10 Removable Roof Leg Racks Check for leg racks on roof. N/A

C.1.5.11 Vacuum Breakers

Report size, number, and type of vacuum breakers. Inspect vacuum breakers. If high legs are set, check for setting of mechanical breaker in high leg position. N/A

C.1.5.12 Rim Vents a Check condition of the screen on the rim vent cover. N/A b Check for plating off or removal of rim vents where jurisdictional rules do not permit removal. N/A

C.1.5.13 Pontoon Inspection Hatches a Open pontoon inspection hatch covers and visually check inside for pontoon leakage. N/A b Test for explosive gas (an indicator of vapor space leaks). N/A c If pontoon hatches are equipped with locked down coves, check for vent tubes. Check that vent tubes are not plugged up. Inspect lock-down devices for condition and operation. N/A

C.1.6.1 Accessways See Tank Out-of-service Inspection Checklist, Item C.2.12. X

NOTES:

APPENDIX E: PHOTOGRAPHS

E.1: Tank 6350.01 North View E.2: Tank 6350.01 South View

E.3: Tank 6350.01 West View E.4: Tank 6350.01 East View

E.5: South Manway 36” Diameter E.6: North Manway 36” Diameter

E.7: 14” Issue E.8: 10” Receipt

E.9: 4” Low Suction E.10: 1¼”” Water Drawoff

E.11: Tank 1 Nameplate E.12: Ground Wire

E.13: Roof Vent E.14: 12” Center Vent

E.15: 10” Sample Gauge Hatch E.16: 12” Honeywell Enraf ATG

E.17: 6” Honeywell Enraf VITO MTT Interface E.18: 36” Manway/ Gauging Hatch

E.19: Roof Access