Attachment J1 - Previous Inspection Report 5016-Tank 1.pdf

US Army Corps of Engineers Omaha District

API 653 Out-of-Service Inspection Report

Moody Air Force Base Facility 5016

Tank 1

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

(USACE POL-MCX)

06/04/2020

API 653 Out-of-Service Inspection Report Moody AFB, Georgia

TABLE OF CONTENTS

ACRONYMS AND ABBREVIATIONS

GENERAL SUMMARY

INSPECTION DATE

STATE REGULATIONS

PREVIOUS INSPECTION DATES

RECOMMENDED FUTURE INSPECTION DATES

GENERAL TANK INFORMATION

A. GENERAL PROJECT INFORMATION

1. API 653 OOS (INTERNAL) INSPECTION

2. SITE INFORMATION

B. TANK INSPECTION COMMENTS

1. TANK CONSTRUCTION

2. TANK FOUNDATION

3. TANK BOTTOM

4. TANK SHELL

5. FIXED ROOF

6. TANK APPURTENANCES

7. TANK AND PIPING COATING

8. TANK PIPING SYSTEM

9. FIRE PROTECTION SYSTEM

10. SECONDARY CONTAINMENT

11. CATHODIC PROTECTION

C. FINDINGS AND RECOMMENDATIONS

1. MANDATORY REPAIRS PER API 650/653, UFC 3-460-01/3-460-03, OR DoD AW 78-24-27

2. SHORT-TERM RECOMMENDED REPAIRS

3. LONG-TERM RECOMMENDED REPAIRS

APPENDIX A: ENGINEERING CALCULATIONS AND DRAWINGS

NEXT INSPECTION

API/OSHA ACCESS STRUCTURE REPORT

APPENDIX B: API 653 CHECKLISTS FOR TANK INSPECTIONS

APPENDIX C: PHOTOGRAPHS

ACRONYMS AND ABBREVIATIONS

AFB Air Force Base

AFFF Aqueous Film Forming Foam

API American Petroleum Institute

ATG Automatic Tank Gauge

BBL Barrel

BMP Best Management Practices

CP Cathodic Protection

DB&B Double Block and Bleed

DFT Dry Film Thickness

DoD Department of Defense

FML Flexible Membrane Liner

HHLA High-High Level Alarm

HLA High Level Alarm

HLCV High Level Control Valve

IAW In Accordance With

ICCP Impressed Current Cathodic Protection

IFR Internal Floating Roof

LLA Low Level Alarm

LLLA Low-Low Level Alarm

MFL Magnetic Flux Leakage

MT Magnetic Particle Testing

NACE NACE International

NDT Non-Destructive Testing

NFPA National Fire Protection Association

OSHA Occupational Health and Safety Administration

OOR Out-of-Roundness

OOS Out-of-Service

PST Product Saver Tank

PT Dye Penetrant Testing

RMMR Recurring Maintenance and Minor Repair

SS Soil-Side

TLG Tape Level Gauge

TRV Thermal Relief Valve

TS Top-Side

UFC Unified Facilities Criteria

USACE United States Army Corps of Engineers

UTT Ultrasonic Thickness Testing

VT Visual Testing

GENERAL SUMMARY

Pond was retained by the United States Army Corps of Engineers (USACE) Omaha District to provide an out-of-service (OOS) tank inspection for Tank 1 (Facility 5016) at Moody Air Force Base (AFB) in Valdosta, Georgia.

The OOS inspection was performed 3-4 June 2020. Results of this inspection identified mandatory and recommended repairs/upgrades to fully comply with applicable sections of American Petroleum Institute (API) 650/653, Unified

Facilities Criteria (UFC) 3-460-01/3-460-03, Department of Defense (DoD) standard AW 78-24-27, Occupational

Safety and Health Administration (OSHA) guidelines, industry standards, and best management practices (BMP).

Tank 1 is a welded, carbon steel, vertical, aboveground Jet-A (F-24) storage tank. The tank is assumed to be constructed to API 12C standards by an unknown manufacturer in 1953 and was repaired by Toltest in April 2007 to API 653, 3rd Edition, Addendum 1. The tank is 45’-0” in diameter and 34’-6” high with a nominal capacity of 10,000

Barrels (BBL) (420,000 gallons).

Testing and inspection activities were performed in accordance with (IAW) applicable sections of API 653, 5th

Edition. This report contains a detailed account of the tank inspection, non-destructive testing (NDT) methods, and conclusions derived from the inspection and testing activities. Findings from this inspection are further detailed in

Section B – Tank Inspection Comments. Mandatory and recommended repairs/upgrades identified in Section B are further classified and listed in Section C – Findings and Recommendations.

INSPECTION DATE

API Out-of-Service (Internal) Inspection Date: 3-4 June 2020 Equipment Used:

Manufacturer: MFE Enterprises Tank Floor Scanner Model Number: MFE 2412 Mark III Calibration Method: Manufacturer Calibrated

Manufacturer: GE Krautkramer Ultrasonic Thickness Gauge Model Number: DMS GO+ Calibration Method: One-Point Calibration with Topcoat Function

Manufacturer: Fischer Technologies Dry Film Thickness (DFT) Gauge Model Number: Dual Scope MPOR

Manufacturer: Technidea Corporation Model Number: Zip Level Pro-200

Manufacturer: Fluke Model Number: True RMS Multimeter

Inspectors:

Darrell A. Walters James F. Hancock II

STATE REGULATIONS

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

PREVIOUS INSPECTION DATES

API Out-of-Service (Internal) Inspection Date: February 2018 API In-Service (External) Inspection Date: February 2018

RECOMMENDED FUTURE INSPECTION DATES

API Out-of-Service (Internal) Inspection Date: June 2040* API In-Service (External) Inspection Date: June 2025* *Inspection intervals are only valid upon completion of all mandatory repairs.

Darrell A. Walters James F. Hancock II

Integrity Engineer Sr. Technician

API 653 Inspector #93640 ST Certified Inspector # AST-6409

ASNT NDT Level I/II ASNT NDT Level I/II

GENERAL TANK INFORMATION

ITEM DESCRIPTION

Owner United States Air Force

Location Moody AFB

Facility Number 5016

Tank Number 1

State / Country Georgia / USA

City Valdosta

Inspection Date 3-4 June 2020

Tank Manufacturer Original: Unknown Repaired By: Toltest, Inc.

Design Standard Original: API 12C (Assumed) Repaired: API 653, 3rd Edition, Addendum 1

Date of Construction 1953

Tank Contents Jet-A (F-24)

Tank Serial Number N/A

Tank Diameter 45’-0”

Shell Height 34’-6”

Product Height Unknown

Tank Capacity 10,000 BBL (420,000 Gallons)

Foundation Concrete Ringwall

Construction

Bottom (Annular): Lap-Welded (Butt-Welded)

Shell: Butt-Welded W/ Six (6) Shell Courses

Fixed Roof: Lap-Welded W/ Center Support Column

Floating Roof: Honeycomb Pan

Material

Bottom: Carbon Steel

Shell: Carbon Steel

Fixed Roof: Carbon Steel

Floating Roof: Aluminum

Cathodic Protection (CP) Impressed Current Cathodic Protection (ICCP)

Interior Coating System* Epoxy

Exterior Coating System* Epoxy with Polyurethane Topcoat

Level Gauging Enraf Automatic Tank Gauge (ATG) and Varec Tape Level Gauge (TLG)

Overfill Protection High Level Alarm (HLA) / High-High Level Alarm (HHLA) / High-Level Control Valve (HLCV) Float Pilot

Piping

Receipt: 8-inch Carbon Steel

Main Suction: 16-inch Carbon Steel

Low Suction: 4-inch Carbon Steel

Water Draw-Off: 1 ½-inch Carbon Steel

Level Alarms HLA/HHLA and Low-Level Alarm (LLA)/Low-Low Level Alarm (LLLA)

Notes:

*Repair drawings and the previous OOS inspection reports dated July 2012 and March 2018 were available for review and comparison.

A. GENERAL PROJECT INFORMATION

1. API 653 OOS (INTERNAL) INSPECTION

The OOS inspection was performed 3-4 June 2020. Results of this inspection identified recommended repairs/upgrades to fully comply with applicable sections of API 650/653, UFC 3-460-01/3-460-03, DoD standard AW 78-24-27, National Fire Protection Association (NFPA) 407, OSHA guidelines, and industry standards.

2. SITE INFORMATION

The Major Command at Moody AFB is the Air Combat Command. The 23rd wing is the home of the world famous “Flying Tigers”, combat search and rescue, and security forces warriors. The 23rd wing consists of “first in” combat search and rescue, close air support, forward air control, interdiction and force protection airmen who conduct worldwide operations in support of United States national security interests and the global war on terror. Additionally, under the wing’s command is the 563rd rescue group at Davis-Monthan AFB with an operating location at Nellis AFB.

B. TANK INSPECTION COMMENTS

1. TANK CONSTRUCTION

Tank 1 is a welded, carbon steel, vertical, aboveground Jet A (F-24) storage tank. The tank is assumed to be constructed to API 12C standards by an unknown manufacturer in 1953 and was repaired by

Toltest in April 2007 to API 653, 3rd Edition, Addendum 1. The tank is 45’-0” in diameter and 34’-6” high with a nominal capacity of 10,000 Barrels (BBL) (420,000 gallons).

2. TANK FOUNDATION

Tank 1 is provided a concrete ringwall foundation, which is in good overall condition with no signs of spalling or cracking. Four (4) leak detection ports are provided between the new and original bottom.

No fluid was expelled from the leak detection ports during inspection.

A settlement evaluation was performed during the inspection. The settlement evaluation satisfied API

653 Appendix B requirements. See Appendix A for settlement results.

3. TANK BOTTOM

The tank is provided a double bottom. The new tank bottom is cone-down with a 29-inch diameter and

10-inch deep center sump and constructed of lap-welded carbon steel plates with butt-welded annular carbon steel plates. The tank bottom was examined using magnetic flux leakage (MFL), ultrasonic thickness testing (UTT), and visual testing (VT) methods. Five (5) UTT measurements were taken on each bottom and annular plate. UTT readings were also taken circumferentially every 2-feet within 3-inches of the shell-to-bottom weld on the annular plates. UTT measurements indicated no significant signs of metal loss on bottom or annular plates. VT was performed at bottom plate lap-welds, annular plate butt-welds, and the shell-to-bottom weld. No significant findings were observed. VT was limited due to internal coating.

An MFL bottom scan was performed on accessible areas of the tank bottom to detect top-side (TS) and soil-side (SS) metal loss. During the internal MFL scan of the tank bottom and annular plates, no TS or

SS indications were identified.

Internal piping for the water draw-off is provided with u-bolt pipe supports. Three (3) water draw-off u-bolt pipe supports are not provided isolation between the support and pipe. Contact point corrosion was observed at the time of inspection. The receipt diffuser is misaligned at the flange connection and is in direct contact with the inner most pipe support leg. Contact point corrosion was observed at this area. The receipt diffuser is also configured such that the flow of fuel into the tank encounters appurtenances within 180°.

Refer to Drawing A-1, “Bottom Layout”, in Appendix A for bottom plate locations, Table 1, “Bottom UTT

Measurements”, in Appendix A for tank bottom plate UTT measurements, and Table 2, “Bottom

Circumferential UTT Measurements”, in Appendix A for tank bottom circumferential UTT measurements.

4. TANK SHELL

The tank shell is equipped with six (6) fully coated, butt-welded, carbon steel shell courses. Shell plates were examined using UTT and VT methods. Nine (9) UTT measurements were taken on each plate of the 1st shell course, three (3) UTT measurements on each insert plate, and ten (10) UTT measurements on each of the 2nd through 6th shell courses using the spiral staircase for access. UTT measurements indicated no significant signs of metal loss on shell plates.

Numerous weld projections on the internal tank shell exhibit porosity, under-cut, and voids. Crevice corrosion was observed at these locations.

Tank shell plates adjacent to the main suction line exhibit inward deformations. The largest deformation measures approximately 10-feet wide with a maximum depth of ½-inch. According to the previous OOS report dated March 2018, shell deformations were found to be acceptable with no repair required. Five (5) conduit supports are welded within 1-inch of the horizontal weld seam between the

1st and 2nd shell course. API mandates tank shell attachments be provided a minimum 3-inches of spacing between welds.

An out-of-roundness (OOR) survey was conducted on the internal tank shell. The largest deviation from the tank nominal diameter was 1 5/8 -inches at the shell-to-bottom weld. The maximum allowable deviation at the shell-to-bottom weld per API 653 Table 10.2 is 1 ½-inches. While the OOR survey conducted does not meet API tolerances, no significant signs of damage were observed on the tank shell.

Refer to Drawing A-2, “Shell Layout”, in Appendix A for shell plate locations, Table 3, “Shell UTT

Measurements”, in Appendix A for shell plate UTT measurements, and Table 8, “Shell Out-of-Roundness

Measurements” in Appendix A for OOR results.

5. FIXED ROOF

The tank fixed roof was examined using UTT and VT methods. Five (5) UTT measurements were taken on each fixed roof plate. UTT measurements indicated no significant signs of metal loss on fixed roof plates.

The fixed roof is provided a center column to support of the fixed roof. The fixed roof center column is stitch welded, creating a crevice for fluid to collect, potentially accelerating coating failure and surface corrosion. Crevice corrosion and corrosion staining were observed during inspection.

Three (3) conduit supports provided for the Vito temperature/water probe are not sealed to the fixed roof. Surface corrosion was observed at the time of inspection.

Refer to Drawing A-3, “Fixed Roof Layout”, in Appendix A for fixed roof plate locations and Table 4, “Fixed Roof UTT Measurements”, in Appendix A for fixed roof plate UTT measurements.

6. TANK APPURTENANCES

6.1 TANK SHELL

Nozzles and appurtenances associated with the shell were inspected using UTT and VT methods. Four (4) UTT measurements were taken on each nozzle with a welded connection greater than 1-inch at four (4) quadrants (0°, 90°, 180°, and 270°). One (1) UTT measurement was taken on each associated reinforcement pad or thickened insert plate. UTT measurements indicated no significant signs of metal loss on the nozzles, reinforcing pads, or thickened insert plates.

Tank 1 is equipped with thirteen (13) shell nozzle penetrations: two (2) 36-inch manways, one (1) 8-inch receipt, two (2) 1 ½” HLA/HHLA nozzle penetrations, two (2) 1 ½-inch

LLA/LLLA penetrations, two (2) 1 ½-inch HLCV float pilot penetrations, one (1) 16-inch main suction, one (1) 4-inch low suction, one (1) aqueous film forming foam (AFFF), and one (1) 1

½-inch water draw-off.

The davit arms for each of the two (2) manways are not provided with grease fittings.

Refer to Drawing A-2, “Shell Layout”, in Appendix A for shell nozzle locations and Table 6, “Nozzle/Repad UTT Measurement”, in Appendix A for nozzle and associated reinforcement pad/thickened insert plate UTT measurements.

6.2 INTERNAL FLOATING ROOF

Tank 1 is provided with an aluminum honeycomb floating pan with a double wiper seal for fire protection. The primary wiper seal provided for the internal floating roof (IFR) is brittle, damaged, and no longer attached to the IFR. Vapor seals for the IFR access ladder and stilling well penetrations for the Enraf ATG, Vito temperature/water probe, and manual gauging hatch are damaged or no longer attached. Damaged wiper seals and IFR penetration seals allow for fuel to evaporate into the environment.

6.3 FIXED ROOF

Nozzles and appurtenances associated with the fixed roof were inspected using UTT and VT methods. Four (4) UTT measurements were taken on each nozzle with a welded connection greater than 1-inch at four (4) quadrants (0°, 90°, 180°, and 270°). One (1) UTT measurement was taken on each associated reinforcement pad. UTT measurements indicated no significant signs of metal loss on nozzles or reinforcing pads.

The fixed roof is provided thirteen (13) nozzle penetrations: one (1) 72-inch by 24-inch IFR installation hatch, one (1) 6-inch blind flange, four (4) 2-inch threaded plugs, one (1) 6-inch

Vito temperature/water probe, one (1) 36-inch by 36-inch IFR inspection hatch with manual gauge hatch, one (1) 10-inch Enraf ATG, one (1) 1-inch Varec TLG, two (2) 1-inch threaded caps, and one (1) ¾-inch threaded plug.

The manual gauge hatch on the IFR inspection hatch is not provided with a latch to secure the hatch cover while not in use.

Refer to Drawing A-3, “Fixed Roof Layout”, in Appendix A for fixed roof nozzle locations and

Table 6, “Nozzle/Repad UTT Measurement”, in Appendix A for nozzle and associated reinforcement pad UTT measurements.

6.4 GAUGING

The tank is provided a manual gauge hatch for manual gauging operations. An Enraf ATG and

Vito temperature/water probe are provided for automatic tank gauging and sampling. The

Enraf ATG and Vito temperature/water probe display is attached to the bottom of the spiral staircase for checking product level from the ground. A mechanical Varec TLG is provided for monitoring product level from the ground and is attached to the IFR. The Varec TLG failed the field operability test and the product level reads incorrectly compared to the Enraf ATG.

6.5 LEVEL ALARMS

The tank is provided with independent, shell mounted alarms in the low, low-low, high, and high-high positions as well as a HLCV float pilot for overfill protection. According to facility personnel, all level alarms and the HLCV float pilot are functioning properly. Piping and nozzle connections for the HLA, HHLA, and HLCV float pilot are provided with threaded connections.

The tank is not provided with a standard product saver tank (PST) with means of testing the level alarms and HLCV system. The PST system should include tubing to the HLA, HHLA, and

HLCV float pilot to facilitate wet testing of the chambers.

6.6 STAIRS AND PLATFORMS

The tank is provided a spiral staircase with one (1) upper platform for fixed roof access. The

HLCV float pilot extends into the path of the spiral staircase, allowing 20-inches of clearance between the appurtenance and staircase railing. OSHA mandates a minimum 26-inches of clearance between appurtenances and staircase railings. The handrail provided for the spiral staircase is 41-inches in height. OSHA mandates that handrail heights are between 30 to 38-inches above the walking surface.

External coating for handrails and balusters provided for the dike access, pipe crossover, and spiral stairs exhibits failure with flaking, base metal exposure, and surface corrosion.

Crossover stair platforms provided at the main suction piping is less than ¼-inch of the main suction flange connection. No contact point corrosion was observed during inspection.

6.7 GROUNDING AND BONDING

The tank shell is equipped with four (4) grounding cables, which are in good overall condition with no signs of deterioration or fraying.

7. TANK AND PIPING COATING

The external tank shell, fixed roof, and piping are provided with an epoxy polyurethane coating system.

External coating for the tank shell and chime exhibits chalking, flaking, and base metal exposure with surface corrosion. External coating for the fixed roof and associated nozzles and appurtenances exhibits chalking, flaking, and base metal exposure with surface corrosion. External coating for the receipt, LLA/LLLA, and PST piping exhibits flaking, cracking, and base metal exposure with surface corrosion.

The internal tank shell, fixed roof, bottom, and piping are provided with a two-coat epoxy coating system. Internal coating for the tank shell exhibits base metal exposure, surface corrosion, and corrosion staining. Internal coating for the tank bottom, appurtenances, and piping exhibits base metal exposure, surface corrosion, and corrosion staining.

DFT measurements were taken on the external shell, fixed roof, internal shell, and bottom. Refer to

Table 5, “Tank DFT Measurements”, in Appendix A for complete DFT data.

8. TANK PIPING SYSTEM

Piping within the containment dike is constructed of carbon steel. The low suction nozzle is not provided with a main suction branch connection, limiting the tank low suction system to aid in fuel removal during maintenance and inspection activities.

Two (2) 8-inch ball valves are located upstream of the HLCV. UFC mandates that double block and bleed

(DB&B) valves are used for positive isolation of the HLCV for maintenance activities. The receipt is provided with u-bolt pipe supports with integrated uni-strut supports. Four (4) u-bolt attachments at the receipt with integrated uni-strut supports for the PST piping are not provided isolation, allowing direct metal-to-metal contact. Four (4) uni-strut supports are missing brackets, enabling the PST piping to freely move laterally. Contact point corrosion was observed during inspection. One (1) pipe support for the receipt TRV piping is not provided isolation.

PST piping is provided threaded connections, one (1) sight flow indicator, and not provided isolation between piping and supports at six (6) u-bolts. Threaded connections and sight flow indicators are no longer used in this application as they are potential leak paths. Contact point corrosion was observed at the pipe-to-support interfaces. One (1) non-standard pipe support was observed supporting the PST piping. Contact point corrosion was observed at the pipe-to-wire interface.

9. FIRE PROTECTION SYSTEM

For internal fire protection, an aluminum honeycomb IFR is provided. Prior to the installation of the

IFR, an AFFF system was provided. The AFFF system is still integrated with the tank, however it is not necessary due to the presence of the IFR. Based on discussions with facility personnel, approval to remove the AFFF discharge chamber and piping has been granted by the Fire Chief.

10. SECONDARY CONTAINMENT

Tank 1 is located within a concrete containment dike partially covered with a flexible membrane liner

(FML). The containment dike is capable of holding approximately 510,000 gallons of liquid, satisfying the 1-foot UFC secondary containment freeboard height requirement. The FML exhibits damage, deterioration, and tears adjacent to the dike drain. After heavy rains water collects underneath the FML as the tank is situated at a low point on the base. Water was observed seeping through small holes in the FML from the underside, potentially creating a leak path in the event of a spill.

The drain provided for the secondary containment is equipped with a manually operated valve and was tested during inspection. The drain was filled with water and maintained for 24-hours to test for leaks. After 24-hours of testing, the valve did not leak, resulting in a sealed draining system.

11. CATHODIC PROTECTION

Tank 1 is equipped with an ICCP system to protect the tank bottom from SS corrosion. The rectifier for

Tank 1 was operating at 23.31 volts and 0.24 amps. Three (3) potential readings were taken for Tank

1. All readings met the -850 millivolt National International (NACE) CP acceptance criteria.

C. FINDINGS AND RECOMMENDATIONS

Based on the OOS API 653 inspection of Tank 1 located at Moody AFB in Valdosta, Georgia mandatory and recommended repair/upgrades have been identified. The following recommendations outline observations from this inspection. All repair recommendations are based on applicable sections of API 650/653, UFC 3-

460-01/3-460-03, DoD Standard AW 78-24-27, NFPA 407, and industry standards.

1. MANDATORY REPAIRS PER API 650/653, UFC 3-460-01/3-460-03, OR DoD AW 78-24-27

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.

1.1 IFR Double Wiper Seal

OBSERVATION: The primary wiper seal provided for the IFR is damaged and no longer attached to the IFR.

REFERENCE: UFC 3-460-03, Section 8-9.1.1 (F)

RECOMMENDATION: Provide the IFR with a new primary wiper seal. No signs of damage or shell gapping were observed on the secondary wiper seal. To be completed via an emergency service order.

1.2 IFR Penetration Seals

OBSERVATION: IFR vapor seals provided at four (4) penetrations for the IFR access ladder and stilling well, the Enraf ATG, Vito temperature/water probe, and manual gauging hatch are damaged or no longer attached.

REFERENCE: UFC 3-460-03, Section 8-9.1.1 (E)

RECOMMENDATION: Provide IFR vapor seals at the IFR access ladder and stilling well penetrations for the Enraf ATG, Vito temperature/water probe, and manual gauging hatch.

To be completed via an emergency service order.

1.3 Secondary Containment Liner

OBSERVATION: The secondary containment FML exhibits damage, deterioration, and tears adjacent to the dike drain due to the collection of rainwater underneath the

FML. This situation results in excess stress at the FML seems and creates a leak path for fluid.

REFERENCE: UFC 3-460-03, Section 8-10.2.1

RECOMMENDATION: Provide 50 linear feet of FML repair adjacent to the dike drain. Remediation to the site drainage should be considered to prevent further damage to the FML.

Repair of the FML to be completed via an emergency service order by the facility.

2. SHORT-TERM RECOMMENDED REPAIRS

Short-term repairs 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.

2.1 Internal Shell Weld Projections

OBSERVATION: Ten (10) weld projections on the internal tank shell exhibit porosity, under-cut, and voids. Crevice corrosion on the tank shell was observed at these locations.

REFERENCE: API 653, Section 9.4

RECOMMENDATION: Remove ten (10) internal weld projections on shell course 2, between the main suction and Manway 1.

2.2 Fixed Roof Center Support

OBSERVATION: The fixed roof center support is stitch welded. Crevice corrosion and corrosion staining were observed during inspection.

REFERENCE: UFC 3-460-01, Section 8-11

RECOMMENDATION: Provide sealant at the fixed roof center support crevice, approximately 140 linear feet.

2.3 Tank Shell Internal Coating

OBSERVATION: Internal coating for the tank shell exhibits spot failure with base metal exposure, surface corrosion, and corrosion staining.

REFERENCE: UFC 3-460-01, Section 8-3.9 (a)

RECOMMENDATION: Provide approximately 100 ft2 of spot coating repair to the internal tank shell.

2.4 Tank Internal Piping and Appurtenances Coating

OBSERVATION: Coating for the ATG datum plate, manual gauge hatch datum plate, tank receipt diffuser, main suction, low suction, and water draw-off, including pipe supports, exhibits failure with base metal exposure, surface corrosion, and corrosion staining.

REFERENCE: UFC 3-460-01, Section 8-3.9 (c)

RECOMMENDATION: Provide approximately 50 ft2 of external coating repair to the tank internal piping.

2.5 Tank Bottom Internal Coating

OBSERVATION: Internal coating for the tank bottom plates and appurtenances exhibits failure with base metal exposure, surface corrosion, and corrosion staining.

REFERENCE: UFC 3-460-01, Section 8-3.9 (a)

RECOMMENDATION: Provide approximately 900 ft2 (50%) of coating repair to the internal tank bottom and appurtenances.

2.6 Tank Shell External Coating

OBSERVATION: External coating for the tank shell exhibits widespread chalking. Chalking indicates the coating system is near the end of its life cycle. Minor instances of coating failure with flaking, base metal exposure, and surface corrosion were observed on the tank shell.

REFERENCE: UFC 3-460-01, Section 8-3.10 (a)

RECOMMENDATION: Provide a full recoat of the tank shell, approximately 5,900 ft2 (100%). Prior to recoat, perform a coating condition survey, including an adhesion test, to determine if a full recoat is required or if a topcoat reapplication is sufficient.

2.7 Tank Chime External Coating

OBSERVATION: External coating on the tank chime exhibits flaking and base metal exposure with surface corrosion.

REFERENCE: UFC 3-460-01, Section 8-3.10

RECOMMENDATION: Provide approximately 20 ft2 of spot coating repair on the tank chime.

2.8 Tank Fixed Roof External Coating

OBSERVATION: External coating for the tank fixed roof exhibits widespread chalking with minor surface corrosion. Chalking indicates the coating system is near the end of its life cycle. Minor instances of coating failure with flaking, base metal exposure, and surface corrosion were observed on the tank fixed roof.

REFERENCE: UFC 3-460-01, Section 8-3.10 (a)

RECOMMENDATION: Provide a full recoat of the tank fixed roof, approximately 2,000 ft2 (100%).

Prior to recoat, perform a coating condition survey, including an adhesion test, to determine if a full recoat is required or if a topcoat reapplication is sufficient.

2.9 Tank Fixed Roof Nozzle External Coating

OBSERVATION: External coating on the Enraf ATG, Vito temperature/water probe, blind flange, three (3) threaded plugs, two (2) threaded caps, and the fixed roof perimeter handrail exhibit flaking and base metal exposure with surface corrosion.

REFERENCE: UFC 3-460-01, Section 8-3.10 (a)

RECOMMENDATION: Provide approximately 30 ft2 of spot coating repair on the LLAs, Enraf ATG, Vito temperature/water probe, blind flange, three (3) threaded plugs, two

(2) threaded caps, and the fixed roof perimeter handrail.

2.10 Receipt Valves

OBSERVATION: The tank is equipped with two (2) 8-inch ball valves upstream of the HLCV at the receipt line.

REFERENCE: UFC 3-460-01, Section 3-3.1.2

RECOMMENDATION: Replace the two (2) 8-inch ball valves upstream of the HLCV with two (2) 8-inch DB&B valves for manual isolation.

2.11 Tank Shell and PST Piping External Coating

OBSERVATION: External coating at the LLAs, receipt, receipt thermal relief valve (TRV) crossover piping, and PST drain piping exhibits flaking, cracking, and base metal exposure with surface corrosion.

REFERENCE: UFC 3-460-01, Section 9-10

RECOMMENDATION: Provide approximately 1,600 ft2 of external coating repair on the LLA, receipt, receipt TRV, PST, and drain piping.

2.12 Access, Crossover, and Spiral Stairs External Coating

OBSERVATION: External coating for handrails and balusters provided for the dike access, pipe crossover, and spiral stairs exhibits failure with flaking, base metal exposure, and surface corrosion.

REFERENCE: UFC 3-460-03, Appendix F, Item 6

RECOMMENDATION: Provide approximately 90 ft2 of external coating repair for the access, crossover, and spiral stairs.

2.13 PST Piping

OBSERVATION: PST piping is provided one (1) sight flow indicator.

REFERENCE: AW 78-24-27, Sheet D.13, Detail 5

RECOMMENDATION: Remove one (1) sight flow indicator on PST piping. Sight flow indicators are no longer used as they are a potential leak path. To be completed via the recurring maintenance and minor repair (RMMR) program service order.

2.14 PST Piping

OBSERVATION: PST piping is provided threaded connections.

REFERENCE: UFC 3-460-01, Section 9-8

RECOMMENDATION: Provide flanged or socket welded connections for PST piping. Threaded connections should be avoided as they are a potential leak path. To be completed via RMMR service order.

2.15 PST and TRV Piping

OBSERVATION: One (1) receipt TRV crossover pipe support and six (6) PST pipe supports are not provided with Teflon isolation, or equivalent. A wire was observed supporting the PST piping. Contact point corrosion was observed at interface.

REFERENCE: UFC 3-460-03, Section 6-1.5 C, AW 78-24-33, Sheet CD.11

RECOMMENDATION: Provide one (1) receipt TRV crossover pipe support and six (6) PST pipe supports with Teflon isolation, or equivalent. Remove one (1) wire pipe support and provide pipe supports IAW AW DoD Design Standard requirements.

2.16 Receipt Piping

OBSERVATION: Four (4) u-bolt attachments at the receipt with integrated uni-strut supports for the PST piping are not provided isolation, allowing direct metal-to-metal contact. Four (4) uni-strut supports are missing brackets, enabling the PST piping to freely move laterally. Contact point corrosion was observed during inspection.

REFERENCE: UFC 3-460-03, Section 6-1.5 C

RECOMMENDATION: Provide isolation at four (4) u-bolt attachments at the receipt line and four

(4) brackets for the PST piping at the uni-strut supports.

3. LONG-TERM RECOMMENDED REPAIRS

Long-term repairs that 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.

3.1 Low Suction Nozzle

OBSERVATION: The low suction nozzle is not provided with a main suction branch connection.

REFERENCE: UFC 3-460-01, Table 8-1 (Z), AW 78-24-27, Sheet D.01. Detail 2.

RECOMMENDATION: Provide a branch connection between the low suction nozzle and main suction pipeline IAW AW DoD Design Standard.

3.2 Main Suction Pipe Support

OBSERVATION: One (1) main suction u-bolt pipe support is not anchored to the secondary containment dike floor.

REFERENCE: UFC 3-460-03, Section 6-1.5 (D), AW 78-24-33, Sheet CD.11

RECOMMENDATION: Anchor one (1) main suction pipe support to the secondary containment dike floor.

3.3 Weld Spacing

OBSERVATION: Weld spacing for two (2) stair treads are welded within 1-inch of the shell-to-bottom weld, two (2) upper stair treads and five (5) conduit supports are welded within 1-inch of the horizontal weld seam separating the 2nd and 1st shell courses.

REFERENCE: API 653, Section 4.3.9.1

RECOMMENDATION: Perform magnetic particle (MT) or dye penetrant (PT) testing IAW API 650 at four (4) stair treads and five (5) conduit supports welded within 1-inch of shell welds.

3.4 Main Suction Crossover Stair Clearance

OBSERVATION: The crossover stair platform provided at the main suction piping are within

¼-inch of contacting the flanged connection, potentially inducing unintentional stress to the main suction piping system during thermal expansion of the stairway and normal pipe movement. No contact point corrosion was observed during inspection.

REFERENCE: UFC 3-460-03, Section 6-1.5

RECOMMENDATION: Rework the main suction crossover stairs to allow clearance between the piping and the concrete structure.

3.5 Manual Gauging Hatch

OBSERVATION: The cover for the manual gauging hatch is not provided a latch.

REFERENCE: BMP

RECOMMENDATION: Provide a latch for the manual gauging hatch to secure the cover while not in use.

3.6 Fixed Roof Conduit Support

OBSERVATION: Three (3) conduit supports for the Vito temperature/water probe are not sealed to the fixed roof.

REFERENCE: UFC 3-460-01, Section 8-11

RECOMMENDATION: Fully seal four (4) conduit supports for the Vito temperature/water probe to the fixed roof. Coating failure with surface corrosion was observed at the time of inspection.

3.7 AFFF

OBSERVATION: The tank is provided an AFFF and an IFR for fire protection.

REFERENCE: UFC 3-460-01, Section 2-13.4.2

RECOMMENDATION: Remove the AFFF piping and discharge chamber, as it is no longer in use.

Based on discussions with facility personnel, approval to remove the AFFF discharge chamber and piping has been granted by the Fire Chief.

3.8 HLA, HHLA, and HLCV Float Pilot Piping

OBSERVATION: Piping and nozzle connections for the HLA, HHLA, and HLCV float pilot are provided threaded connections.

REFERENCE: UFC 3-460-01, Section 8-11 and 9-8 (E)

RECOMMENDATION: Provide the HLA, HHLA, and HLCV float pilot with flanged or socket welded connections. Threaded connections should be avoided as they are a potential leak path. To be completed via RMMR service order.

3.9 PST System

OBSERVATION: The tank is not provided a standard PST with means of testing the level alarms and HLCV.

REFERENCE: AW 78-24-27, Sheet D.13 Detail 5

RECOMMENDATION: Provide the tank with a PST IAW AW DoD Design Standard. The PST system should include tubing to the HLA, HHLA, and HLCV float pilot to facilitate wet testing of the chambers.

3.10 Varec TLG System

OBSERVATION: The Varec TLG failed the field operability test and does not match the Enraf

ATG tank level readings.

REFERENCE: BMP

RECOMMENDATION: Remove the Varec TLG system from Tank 1 per the facility’s request.

3.11 Manway 1 and Manway 2 Davit Arms

OBSERVATION: Davit arms for Manway 1 and Manway 2 are not equipped with grease fittings.

REFERENCE: API 650, Section 5.8.3.5

RECOMMENDATION: Provide Manway 1 and Manway 2 davit arms with grease fittings to allow ease of use.

3.12 Receipt Piping Flow Arrows

OBSERVATION: Flow arrows and product designation labeling for the receipt piping exhibit fading and peeling.

REFERENCE: UFC 3-460-01, Section 2-17

RECOMMENDATION: Replace flow arrows and product designation labeling for receipt piping. To be completed via RMMR.

3.13 Spiral Staircase

OBSERVATION: The spiral staircase handrail height is 41-inches, which is greater than the

38-inch maximum allowable height per OSHA requirements.

REFERENCE: OSHA 1926.1051(c)(6)

RECOMMENDATION: Rework the spiral staircase at the tank shell, so the handrail is positioned at a height between 30 to 38-inches, meeting OSHA requirements.

3.14 HLCV Float Pilot Clearance

OBSERVATION: The clearance between the HLCV float pilot and spiral staircase handrail is approximately 20-inches, less than the OSHA required 26-inch clearance.

REFERENCE: OSHA 1910.25 (d)(1)

RECOMMENDATION: Extend the stair treads or provide a work platform at the HLCV float pilot to allow for a minimum 26-inches of clear space between the spiral staircase handrail and appurtenance.

3.15 Internal Pipe Supports

OBSERVATION: The internal pipe supports for three (3) water draw-off supports are not provided isolation.

REFERENCE: AW 78-24-27, Sheet D.08 Detail 6

RECOMMENDATION: Provide Teflon-coated u-bolts at three (3) water draw-off supports.

3.16 Internal Receipt Diffuser

OBSERVATION: The receipt diffuser is misaligned at the flange connection and is in direct contact with the inner most pipe support leg, potentially adding additional unintended stresses to the support. Contact point corrosion was observed during inspection. Additionally, the receipt diffuser orientation is such that the flow of fuel into the tank encounters appurtenances within 180°.

REFERENCE: UFC 3-460-03, Section 6-1.5 (A); AW 78-24-27, Sheet D-08, Detail 1, Note 2

RECOMMENDATION: Rework the receipt diffuser and associated pipe support to allow for proper diffuser movement and provide adequate support. Additionally, rework the receipt diffuser such that the flow of fuel into the tank does not encounter appurtenances for at least 180°.

APPENDIX A: ENGINEERING CALCULATIONS AND DRAWINGS

NOZZLE

SCHEDULE

NOZZLE SIZE SHELL LAYOUT

MW1 36" MANWAY

N1 8" RECEIPT

N2 1

" HLA/HHLA

N3 1

" HLA/HHLA

N4 1

" LLA/LLLA

N5 1

" LLA/LLLA

N6 1

" HLCV FLOAT PILOT

N7 1

" HLCV FLOAT PILOT

MW2 36" MANWAY 2

N8 16" MAIN SUCTION

N9 4" LOW SUCTION

N10 -

AFFF DISCHARGE

CHAMBER

N11 1

" WATER DRAW OFF

MW1

CONDUIT SUPPORT

(TYP. 11)

N1

N2

N3

N6

N8

N9

ROOF PERIMETER

HANDRAIL

SPIRAL STAIRCASE

UPPER PLATFORM

GROUNDING

CABLE (TYP. 4)

1-21-1 1-51-41-3

MW2

N10

N11

N7

VAREC

TLG

TANK

NAMEPLATE

AFFF

SUPPORT

(TYP. 2)

LEAK DETECTION

PORT (TYP. 4)

N4

N5

NEW

TANK BOTTOM

2-12-52-4 2-2 2-3

3-1 3-2 3-33-53-4

4-44-3 4-1 4-2

5-1 5-25-55-45-3

6-3 6-4 6-5 6-1 6-2

OVERFLOW

VENT (TYP. 2)

LLA/LLLA CHAMBER

SUPPORT (TYP. 2)

TLG

SUPPORT

(TYP. 3)

4'-6"

ORIGINAL

TANK BOTTOM

6'-0"

6'-0"

6'-0"

6'-0"

6'-0"

1'-6"

C O

N T

R A

C T

N

O

F I L E

A M

E

D W

N

B

Y

C K

D

B

Y

D E

S I G

N E

D

B

Y

D E

S C

R I P

T I O

N

D

2 3

C

A

B

M A

R K

A P

P R

D A

T E

F I

U M

B E

R

S I Z

E

S U

B M

I T

T E

D

B

Y

P L O

T

S

C A

L E

P

L O

T

D

A T

E

D A

T E

M A

R K

D E

S C

R I P

T I O

N

D E

L I V

E R

Y

O

R D

R

SHEET

IDENTIFICATION

D A

T E

A P

P R

SHEET OF

U S

A

R M

Y

C

O R

P S

F

E

N G

I N

E E

R S

O M

A H

A

N

E

O M

A H

A

D

I S

T R

I C

T

V A

L D

O S

T A

G

A

M O

O D

Y

A

F B

T A

K

Y

O U

T

N T

S

N A

W

F

D

W

F

F

A N

S I

B

P a r k w a y

L a n e

S u i t e

P e a c h t r e e

C o r n e r s

G

A

P h o n e

F a x

J O

B

N

O

C A

W

A E

C

C R

P

N A

TANK INFORMATION

TANK NO.: TANK 1 (FACILITY 5016)

MANUFACTURER: UNKNOWN

YEAR BUILT: 1953

TANK DIAMETER: 45'-0"

TANK HEIGHT: 34'-6"

NOMINAL CAPACITY: 10,000

PRODUCT: JET-A (F-24)

PRODUCT SPECIFIC GRAVITY: 0.84

GPS COORDINATES: 30.97005°, -83.21005°

N A

S H

E L

L

L

A Y

O U

T

A-2

NOTES:

1. REFER TO TABLE 3, "SHELL UTT MEASUREMENTS", IN

APPENDIX A FOR INDIVIDUAL SHELL PLATE UTT

READINGS.

2. REFER TO TABLE 6, " NOZZLE / REPAD UTT

MEASUREMENTS", IN APPENDIX A FOR NOZZLE

MEASUREMENTS.

SPIRAL

STAIRCASE

NOZZLE

SCHEDULE

NOZZLE SIZE FIXED ROOF LAYOUT

N12 ¾"

THREADED PLUG

N13 1" THREADED CAP

N14 1" VAREC TLG

N15 1" THREADED CAP

N16 6" BLIND FLANGE

N17 6"

VITO TEMPERATURE AND

WATER PROBE

N18 2" THREADED PLUG

N19 2" THREADED PLUG

N20 2" THREADED PLUG

N21 10" ENRAF ATG

N22 2" THREADED PLUG

N23 72" X 24" IFR INSTALLATION HATCH

N24 36" X 36"

IFR INSPECTION HATCH

WITH MANUAL GAUGING

HATCH

N24

N23

N16

N17

N21

N18

N12

N20

23 24

25 26

N14

N15

N13

N19

N22

CONDUIT

SUPPORT

(TYP. 3)

C O

N T

R A

F I

M

E

D W

N

B

Y

C K

D

B

Y

D E

S I G

N E

D

B

Y

D E

S C

R I P

T I O

N

D

2 3

C

A

B

M A

R K

A P

P R

D A

T E

F I

M

B E

R

S I Z

E

S U

B M

I T

T E

D

B

Y

P L O

T

S

C A

L E

P

L O

T

D

A T

E

D A

T E

M A

R K

D E

S C

R I P

T I O

N

D E

L I V

E R

Y

O

R D

SHEET

IDENTIFICATION

D A

T E

A P

P R

SHEET OF

U S

A

R M

Y

C

O R

E

N G

I N

E E

R S

O M

A H

A

N

E

O M

A H

A

D

I S

T R

I C

T

V A

L D

O S

T A

G

A

M O

O D

Y

A

F B

T A

Y

O U

T

N T

S

N A

W

F

D

W

F

F

A N

S I

B

P a r k w a y

L a n e

S u i t e

P e a c h t r e e

C o r n e r s

G

A

P h o n e

F a x

J O

B

N

O

C A

W

A E

C

C R

P

N A

TANK INFORMATION

TANK NO.: TANK 1 (FACILITY 5016)

MANUFACTURER: UNKNOWN

YEAR BUILT: 1953

TANK DIAMETER: 45'-0"

TANK HEIGHT: 34'-6"

NOMINAL CAPACITY: 10,000

PRODUCT: JET-A (F-24)

PRODUCT SPECIFIC GRAVITY: 0.84

GPS COORDINATES: 30.97005°, -83.21005°

N A

F I X

D

O

F

L

A Y

O U

T

A-3

C O

N T

R A

F I

M

E

D W

N

B

Y

C K

D

B

Y

D E

S I G

N E

D

B

Y

D E

S C

R I P

T I O

N

D

2 3

C

A

B

M A

R K

A P

P R

D A

T E

F I

M

B E

R

S I Z

E

S U

B M

I T

T E

D

B

Y

P L O

T

S

C A

L E

P

L O

T

D

A T

E

D A

T E

M A

R K

D E

S C

R I P

T I O

N

D E

L I V

E R

Y

O

R D

SHEET

IDENTIFICATION

D A

T E

A P

P R

SHEET OF

U S

A

R M

Y

C

O R

E

N G

I N

E E

R S

O M

A H

A

N

E

O M

A H

A

D

I S

T R

I C

T

V A

L D

O S

T A

G

A

M O

O D

Y

A

F B

T A

Y

O U

T

N T

S

N A

W

F

D

W

F

F

A N

S I

B

P a r k w a y

L a n e

S u i t e

P e a c h t r e e

C o r n e r s

G

A

P h o n e

F a x

J O

B

N

O

C A

W

A E

C

C R

P

N A

TANK INFORMATION

TANK NO.: TANK 1 (FACILITY 5016)

MANUFACTURER: UNKNOWN

YEAR BUILT: 1953

TANK DIAMETER: 45'-0"

TANK HEIGHT: 34'-6"

NOMINAL CAPACITY: 10,000

PRODUCT: JET-A (F-24)

PRODUCT SPECIFIC GRAVITY: 0.84

GPS COORDINATES: 30.97005°, -83.21005°

N A

LEGEND:

TANK DEPRESSION WITH WATER STAINING

NOTES:

1. REFER TO TABLE 4, "FIXED ROOF ULTRASONIC

THICKNESS READINGS", IN APPENDIX A FOR INDIVIDUAL

ROOF PLATE UTT READINGS.

2. REFER TO TABLE 6, " NOZZLE / REPAD UTT

MEASUREMENTS", IN APPENDIX A FOR NOZZLE

MEASUREMENTS.

30 31

MW2

MW1

WATER DRAW-OFF

SUPPORT (TYP. 3)

FIXED ROOF

SUPPORT (TYP.4)

RECEIPT, MAIN SUCTION,

LOW SUCTION SUPPORT

(TYP. 7)

ENRAF ATG

IFR ACCESS

LADDER/MANUAL GAUGE

HATCH

ANTI-ROTATION CABLE

(TYP. 2)

IFR LEG SUPPORT

(TYP. 10)

VITO PROBE

SUPPORT (TYP. 2)

SUMP

LAP PATCH

(TYP. 5)

32 33

1714 16

SUMP DETAIL

.523"

.528"

.529"

.521"

.486"

.483"

.482"

.483" .476"

2'-5"

0'-10"

C O

N T

R A

F I

M

E

D W

N

B

Y

C K

D

B

Y

D E

S I G

N E

D

B

Y

D E

S C

R I P

T I O

N

D

2 3

C

A

B

M A

R K

A P

P R

D A

T E

F I

M

B E

R

S I Z

E

S U

B M

I T

T E

D

B

Y

P L O

T

S

C A

L E

P

L O

T

D

A T

E

D A

T E

M A

R K

D E

S C

R I P

T I O

N

D E

L I V

E R

Y

O

R D

SHEET

IDENTIFICATION

D A

T E

A P

P R

SHEET OF

U S

A

R M

Y

C

O R

E

N G

I N

E E

R S

O M

A H

A

N

E

O M

A H

A

D

I S

T R

I C

T

V A

L D

O S

T A

G

A

M O

O D

Y

A

F B

T A

Y

O U

T

N T

S

N A

W

F

D

W

F

F

A N

S I

B

P a r k w a y

L a n e

S u i t e

P e a c h t r e e

C o r n e r s

G

A

P h o n e

F a x

J O

B

N

O

C A

W

A E

C

C R

P

N A

TANK INFORMATION

TANK NO.: TANK 1 (FACILITY 5016)

MANUFACTURER: UNKNOWN

YEAR BUILT: 1953

TANK DIAMETER: 45'-0"

TANK HEIGHT: 34'-6"

NOMINAL CAPACITY: 10,000

PRODUCT: JET-A (F-24)

PRODUCT SPECIFIC GRAVITY: 0.84

GPS COORDINATES: 30.97005°, -83.21005°

N A

F I X

D

O

F

L

A Y

O U

T

A-1

C O

N T

R A

F I

M

E

D W

N

B

Y

C K

D

B

Y

D E

S I G

N E

D

B

Y

D E

S C

R I P

T I O

N

D

2 3

C

A

B

M A

R K

A P

P R

D A

T E

F I

M

B E

R

S I Z

E

S U

B M

I T

T E

D

B

Y

P L O

T

S

C A

L E

P

L O

T

D

A T

E

D A

T E

M A

R K

D E

S C

R I P

T I O

N

D E

L I V

E R

Y

O

R D

SHEET

IDENTIFICATION

D A

T E

A P

P R

SHEET OF

U S

A

R M

Y

C

O R

E

N G

I N

E E

R S

O M

A H

A

N

E

O M

A H

A

D

I S

T R

I C

T

V A

L D

O S

T A

G

A

M O

O D

Y

A

F B

T A

Y

O U

T

N T

S

N A

W

F

D

W

F

F

A N

S I

B

P a r k w a y

L a n e

S u i t e

P e a c h t r e e

C o r n e r s

G

A

P h o n e

F a x

J O

B

N

O

C A

W

A E

C

C R

P

N A

TANK INFORMATION

TANK NO.: TANK 1 (FACILITY 5016)

MANUFACTURER: UNKNOWN

YEAR BUILT: 1953

TANK DIAMETER: 45'-0"

TANK HEIGHT: 34'-6"

NOMINAL CAPACITY: 10,000

PRODUCT: JET-A (F-24)

PRODUCT SPECIFIC GRAVITY: 0.84

GPS COORDINATES: 30.97005°, -83.21005°

N A

LEGEND:

- UTT READING (INCHES)

NOTES:

1. REFER TO TABLE 1, "BOTTOM UTT MEASURMENTS", IN

APPENDIX A FOR INDIVIDUAL BOTTOM PLATE UTT

READINGS.

2. REFER TO TO TABLE 2, " BOTTOM CIRCUMFERENTIAL UTT

MEASUREMENTS", IN APPENDIX A FOR

CIRCUMFERENTIAL MEASUREMENTS.

.XXX"

TABLE 1 – BOTTOM UTT MEASUREMENTS

Plate 1 Plate 2 Plate 3 Plate 4 Plate 5 .305 .305 .307 .307 .308 .307 .308 .306 .309 .306 .307 .305 .308 .304 .307 .304 .300 .307 .306 .308 .308 .306 .306 .308 .307 Avg. .304 .306 .308 .306 .307 Plate 6 Plate 7 Plate 8 Plate 9 Plate 10 .304 .306 .307 .307 .305 .307 .306 .305 .308 .306 .306 .305 .308 .303 .306 .306 .305 .307 .307 .307 .304 .305 .306 .308 .308 Avg. .305 .307 .306 .305 .307 Plate 11 Plate 12 Plate 13 Plate 14 Plate 15 .305 .307 .307 .302 .312 .310 .312 .311 .309 .311 .306 .308 .312 .313 .311 .306 .306 .306 .309 .312 .311 .312 .311 .310 .310 Avg. .306 .306 .311 .312 .310 Plate 16 Plate 17 Plate 18 Plate 19 Plate 20 .310 .314 .307 .309 .314 .314 .313 .311 .315 .312 .313 .309 .315 .312 .315 .313 .313 .309 .309 .313 .314 .310 .311 .315 .314 Avg. .313 .309 .314 .311 .314 Plate 21 Plate 22 Plate 23 Plate 24 Plate 25 .308 .307 .315 .316 .314 .313 .310 .311 .308 .314 .307 .316 .315 .310 .313 .308 .309 .315 .312 .313 .312 .311 .310 .315 .314 Avg. .308 .315 .313 .310 .313 Plate 26 Plate 27 Plate 28 Plate 29 Plate 30 .312 .311 .310 .311 .310 .310 .314 .281 .309 .118 .312 .310 .311 .315 .311 .312 .313 .310 .311 .311 .309 .315 .314 .310 .120 Avg. .312 .310 .310 .308 .234 Plate 31 Plate 32 Plate 33 .312 .314 .309 .311 .311 .312 .316 .312 .313 .313 .316 .309 .311 .312 .313 Avg. .314 .310 .312

Thickness represented in inches.

Average bottom (general) plate thickness: .308”

Average bottom (annular) plate thickness: .306”

TABLE 2 – BOTTOM CIRCUMFERENTIAL UTT MEASUREMENTS

Ultrasonic Thickness Survey of Tank Floor 0' 3' 6' 9' 12' 15' 18' 21' 24' 27' 30' 33' 36' 39' 42' 45' 48'

.310 .312 .307 .307 .306 .303 .308 .311 .308 .311 .306 .310 .310 .308 .308 .310 .309 51' 54’ 57’ 60’ 63’ 66’ 69’ 72’ 75’ 78’ 81’ 84’ 87’ 90’ 93’ 96’ 99’

.307 .310 .308 .307 .308 .305 .306 .305 .305 .306 .306 .307 .309 .307 .307 .307 .309 102’ 105’ 108’ 111’ 114’ 117’ 120’ 123’ 126’ 129’ 132’ 135’ 138’ 141’ .306 .309 .303 .305 .303 .304 .306 .308 .307 .307 .306 .306 .308 .308 0’ = Manway 1 Locations are within 3-inches of the shell-to-bottom weld. Thickness measurements are taken at 2 feet increments around the circumference of the tank.

Thickness measurements are in inches.

Average Bottom Circumferential Readings: .307”

TABLE 3 - SHELL UTT MEASUREMENTS

Roof

Shell Course

Plate 6-1 Plate 6-2 Plate 6-3 Plate 6-4 Plate 6-5 .193 .193 .195 .192 .193 .192 .193 .194 .191

.185 Avg. .193

Circumferential Weld C6

Shell Course

Plate 5-1 Plate 5-2 Plate 5-3 Plate 5-4 Plate 5-5 .186 .187 .191 .187 .188 .192 .185 .190 .192

.191 Avg. .189

Circumferential Weld C5

Shell Course

Plate 4-1 Plate 4-2 Plate 4-3 Plate 4-4 Plate 4-5 .192 .195 .194 .193 .195 .194 .201 .194 .194

.191 Avg. .195

Circumferential Weld C4

Shell Course

Plate 3-1 Plate 3-2 Plate 3-3 Plate 3-4 Plate 3-5 .184 .196 .190 .186 .195 .191 .189 .193 .190

.186 Avg. .190

Circumferential Weld C3

Shell Course

Plate 2-1 Plate 2-2 Plate 2-3 Plate 2-4 Plate 2-5 .261 .265 .261 .263 .266 .258 .264 .264 .257

.256 Avg. .262

Circumferential Weld C2

Shell Course

Plate 1-1 Plate 1-2 Plate 1-3 Plate 1-4 Plate 1-5 .263 .268 .268 .248 .252 .257 .249 .265 .260 .254 .259 .256 .266 .255 .247 .264 .269 .270 .249 .257 .256 .250 .253 .259 .251 .258 .261 .264 .253 .248 .260 .263 .265 .249 .259 .257 .243 .246 .255 .246 .254 .256 .258 .247 .243

Avg. .266 .254 .253 .255 .253 Circumferential Weld C1

Thickness represented in inches.

Average shell course 1: .256” Average shell course 5: .189”

Average shell course 2: .262” Average shell course 6: .193”

Average shell course 3: .190”

Average shell course 4: .195”

TABLE 4 – FIXED ROOF UTT MEASUREMENTS

Plate 1 Plate 2 Plate 3 Plate 4 Plate 5

.205 .191 .195 .198 .194 .195 .192 .193 .199 .195

.199 .200 .199 .198 .196

.201 .191 .201 .192 .197 .195 .193 .193 .193 .192

Avg. .197 .197 .196 .194 .195

Plate 6 Plate 7 Plate 8 Plate 9 Plate 10

.191 .192 .189 .190 .193 .189 .195 .196 .202 .199

.195 .195 .197 .203 .202

.190 .193 .192 .189 .194 .192 .199 .202 .199 .195

Avg. .192 .191 .193 .199 .199

Plate 11 Plate 12 Plate 13 Plate 14 Plate 15

.193 .196 .192 .193 .190 .194 .197 .196 .194 .199

.187 .198 .200 .204 .201

.189 .189 .192 .194 .195 .195 .197 .198 .199 .195

Avg. .191 .194 .195 .198 .198

Plate 16 Plate 17 Plate 18 Plate 19 Plate 20

.192 .187 .191 .193 .190 .192 .196 .200 .192 .197

.196 .196 .198 .204 .203

.196 .190 .192 .191 .192 .192 .188 .201 .190 .195

Avg. .192 .193 .193 .198 .195

Plate 21 Plate 22 Plate 23 Plate 24 Plate 25

.194 .194 .198 .198 .198 .197 .190 .196 .198 .195

.198 .203 .203 .191 .201

.192 .192 .186 .202 .194 .196 .193 .196 .196 .194

Avg. .194 .197 .198 .193 .197

Plate 26 Plate 27 Plate 28 .189 .195 .193 .203 .196 .195 .199 .204 .193 .194 .197 .202 .199 .189 .192 Avg. .195 .200 .193

Thickness represented in inches.

Average fixed roof: .195”

TABLE 5 – TANK DFT MEASUREMENTS

External Shell Coating Thickness

Average Standard Deviation Number of Readings Minimum Maximum

12.90 2.66 20 9.43 21.25

Fixed Roof Coating Thickness

14.28 1.95 15 10.46 18.35

Internal Shell Coating Thickness

13.45 2.92 20 9.54 22.09

Bottom Coating Thickness

14.65 1.73 15 12.02 18.12

Thicknesses are represented in mils.

TABLE 6 - NOZZLE / REPAD UTT MEASUREMENTS

Nozzle Nozzle Size

(Diameter or Width/Height)

Repad Shape

Repad Size

(W X H)

Repad Thickness

Nozzle Thickness H1 H2

Nozzle Location (Measured circumferentially from Manway 1)

Notes

0⁰ 90⁰ 180⁰ 270⁰

MW1 36" B 72" .254 .248 .248 .245 .244 3'-6" 0'-6" 0'-0" Manway 1

N1 8'' D 24" x 26" .249 .498 .492 .494 .503 1'-3" - 29'-0'' Receipt

N2 1 ½" - - - TH TH TH TH 4'-8 1/2" 4'-8" 55'-0'' HLA/HHLA

N3 1 ½" - - - TH TH TH TH 2'-3 ½" 2'-3" 55'-0'' HLA/HHLA

N4 1 ½" - - - TH TH TH TH 3'-9 ½" 3'-9" 57'-0'' LLA/LLLA

N5 1 ½" - - - TH TH TH TH 2'-7 ½" 2'-7" 57'-0'' LLA/LLLA

N6 1 ½" - - - TH TH TH TH 5'-11" 5'-10 ½" 58'-6'' HLCV Float Pilot

N7 1 ½" - - - TH TH TH TH 1'-9 ½" 1'-9" 58'-6'' HLCV Float Pilot

MW2 36'' B 72" .251 .247 .246 .246 .248 3'-6" 0'-6" 65'-0'' Manway 2

N8 16'' D 31'' x 33'' .494 .520 .519 .525 .529 1'-7" - 101'-0'' Main Suction

N9 4'' B 12" .250 .292 .295 .299 .289 0'-10" 0'-3 ½" 106'-0'' Low Suction

N10 - - - - Obst. Obst. Obst. Obst. Obst. Obst. 135'-0'' AFFF Discharge Chamber

N11 1 ½" - - - .184 .173 .166 .180 0'-10" 0'-9 1/2" 136'-8'' Water Draw Off

N12 ¾" - - - TH TH TH TH Fixed Roof Threaded Plug

N13 1" - - - TH TH TH TH Fixed Roof Threaded Cap

N14 1" - - - TH TH TH TH Fixed Roof Varec TLG

N15 1" - - - TH TH TH TH Fixed Roof Threaded Cap

N16 6" B 14" .251 .253 .282 .272 .276 Fixed Roof Blind Flange

N17 6" B 16" .252 .258 .248 .243 .249 Fixed Roof Vito Temperature/Water Probe

N18 2" - - - TH TH TH TH Fixed Roof Threaded Plug

N19 2'' - - - TH TH TH TH Fixed Roof Threaded Plug

N20 2'' - - - TH TH TH TH Fixed Roof Threaded Plug

N21 10" F 24" x 24" .196 .358 .356 .352 .356 Fixed Roof Enraf ATG

N22 2" - - - TH TH TH TH Fixed Roof…