Attachment J2 - Previous Inspection Report 5017-Tank 2.pdf

Gilbane Tanks K1002 and W0003 – Post Repair API 653 Inspections

June 19, 2019

All Pond marketing materials are printed on papers containing post-consumer recycled fibers and are FSC Certified.

June 25, 2020

Ronald J. Weiser

Project Manager ronald.j.wieser@usace.army.mil

USACE, Omaha District

Contract Number: W9128F-17-D-0016

Task Order Number: W9128F20F0026

Submittal Number: 028

Per SOW para 2.4.1 and 2.4.1.2, see attached for the following document(s):

1. Moody AFB – Tank 2 (Facility 5017) API 653 Out-of-Service Inspection Report – Final

2. Attachment C – Tank 2 (Facility 5017) Fuel Storage Tank Excel Document

Respectfully submitted, Pond

Anthony E, Chinn, EIT

Program Manager | Mechanical Integrity chinna@pondco.com

678-591-5242

CC: John Anna - john.anna@us.af.mil

Michael Deeker - michael.deeker@dla.mil

Rueben Watson - ruben.watson@dla.mil

Daniel Cook - Daniel.1.cook@dla.mil

William Delos Santos - william.delossantos@dla.mil

James Lee - james.b.lee85.mil@mail.mil

Larry Frazier - Larry.Frazier.1@us.af.mil mailto:ronald.j.wieser@usace.army.mil mailto:chinna@pondco.com mailto:john.anna@us.af.mil mailto:michael.deeker@dla.mil mailto:ruben.watson@dla.mil mailto:Daniel.1.cook@dla.mil mailto:Larry.Frazier.1@us.af.mil

US Army Corps of Engineers Omaha District

API 653 Out-of-Service Inspection Report

Moody Air Force Base Facility 5017

Tank 2

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

(USACE POL-MCX)

05/05/2020

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

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

RMMR Recurring Maintenance and Minor Repair

SS Soil-Side

TLG Tape Level Gauge

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) to provide an out-of-service (OOS) tank inspection for Tank 2 (Facility 5017) at Moody Air Force Base (AFB) in Valdosta, Georgia.

The OOS inspection was performed 4-5 May 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, National Fire

Protection Association (NFPA) 407, Occupational Safety and Health Administration (OSHA) guidelines, industry standards, and best management practices (BMP).

Tank 2 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 manufacture in 1953 and was repaired by Toltest in April 2007 to

API 653, 3rd Edition, Addendum 1. The tank is 35’-0” in diameter and 28’-6” high with a nominal capacity of 4,500

Barrels (BBL) (189,000 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: 4-5 May 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

Manufacturer: Fischer Technologies Dry Film Thickness (DFT) Gauge Model Number: Dual Scope MPOR Calibration Method: Calibration to Known Thickness Standard

Manufacturer: Johnson Model Number: Self-Leveling Rotary Laser Level Calibration Method: N/A

Manufacturer: Fluke Model Number: True RMS Multimeter Calibration Method: Manufacturer Calibrated

Inspector(s):

Chris N. Thompson Christopher A. Walker, EIT Chris R. Peterson

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: May 2040* API In-Service (External) Inspection Date: May 2025 *Twenty (20) year inspection interval is only valid upon completion of all mandatory repairs.

Chris N. Thompson Christopher A. Walker, EIT Chris R. Peterson

API 653 Inspector # 34955 Integrity Engineer Integrity Engineer

ASNT NDT Level III API 570 Inspector # 85282

ASNT NDT Level I/II

GENERAL TANK INFORMATION

ITEM DESCRIPTION

Owner United States Air Force

Location Moody AFB

Facility Number 5017

Tank Number 2

State / Country Georgia / USA

City Valdosta

Inspection Date 4-5 May 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 35’-0”

Shell Height 28’-6”

Product Height* 26’-6”

Tank Capacity 4,500 BBL (189,000 Gallons)

Foundation Concrete Ringwall

Construction

Bottom: Lap-Welded

Shell: Butt-Welded

Fixed Roof: Lap-Welded

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 4-5 May 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, 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 2 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 manufacture in 1953 and was repaired by

Toltest in April 2007 to API 653, 3rd Edition, Addendum 1. The tank is 35’-0” in diameter and 28’-6” high with a nominal capacity of 4,500 Barrels (BBL) (189,000 gallons).

2. TANK FOUNDATION

Tank 2 is provided a concrete ringwall foundation and 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 was satisfied based on data collected. 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 30-inch 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 is provided with U-bolt pipe supports. Two (2) 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.

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 five (5) 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 5th shell courses using the spiral staircase for access. UTT measurements indicated no significant signs of metal loss on shell plates.

Three (3) isolated pits were observed on the internal tank shell with pit depths of 0.075-inch, 0.070-inch, and 0.060-inch. Remaining life of the deepest pit based on criteria set forth in API 653, Section

4.3.2.2 is 3.23 years. The deepest pit is located within the 2nd shell course, 46-feet circumferentially from Manway 1 and 7 7/8-inches up from the horizontal seam weld and has a remaining thickness of

0.121-inches.

Pin holes were observed on the horizontal seam weld between the 1st and 2nd shell course adjacent to the receipt nozzle penetration. Coating failure with base metal exposure and surface corrosion was observed at the horizontal seam weld pin holes during inspection. An emergency recurring maintenance and minor repair (RMMR) service order will be put in place to repair pitting and horizontal seam weld pin holes before the tank is put back in service.

Three (3) weld projections on the internal tank shell exhibit porosity, lack of fusion, voids, and pin holes, creating crevice corrosion on the tank shell. Weld projections limit accessibility to inspect the tank shell. Corrosion staining was observed at weld projections and corrosion of the tank shell may be present beneath the projections.

Conduit provided for the Enraf ATG and Varec TLG is in direct contact with the tank chime and shell, hindering the ability to inspect the tank shell-to-bottom weld and accelerating coating failure.

An out-of-roundness (OOR) survey was conducted on the internal tank shell. The largest deviation from the tank nominal diameter was 1 1/8-inches at 3-feet above the shell-to-bottom weld. The maximum allowable deviation more than a 1-foot above the shell-to-bottom weld per API 653 Table 10.2 is 3-inches. No significant signs of OOR 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 support for structural support of the fixed roof. The fixed roof center support 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. Minor coating failure was observed at the support-to-roof interface, potentially accelerating contact point corrosion.

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 2 is equipped with fourteen (14) shell nozzle penetrations: two (2) 36-inch manways, one (1) 8-inch receipt, two (2) 1 ½-inch LLA/LLLA nozzle penetrations, two (2) 1 ½-inch

HLA/HHLA penetrations, two (2) 2-inch HLCV float pilot penetrations, one (1) 1 ½-inch threaded plug, one (1) 16-inch main suction, one (1) 4-inch low suction, one (1) 1 ½-inch water draw-off, and one (1) 6-inch aqueous film forming foam (AFFF) discharge chamber penetration.

External coating on the LLA chamber assembly exhibits flaking and base metal exposure with surface corrosion. Manway 1 and Manway 2 are provided hinges rather than davit arms with grease fittings and are not IAW DoD standard design. Current hinges are welded directly to the nozzle flange and are not attached to the tank. Confined space labeling on each manway is faded and peeling.

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 2 is provided with an aluminum honeycomb floating pan with a double wiper seal system 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. The bottom skin of two (2) extra flotation panels have disbonded from the inner honeycomb cell, potentially reducing the IFR buoyancy. An emergency RMMR service order will be issued to replace the extra flotation panels before the tank is returned to service.

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 twelve (12) nozzle penetrations: one (1) 2-inch Varec TLG, two (2)

1-inch threaded plugs, one (1) 1-inch threaded cap, three (3) 2-inch threaded plugs, one (1)

6-inch Vito temperature/water probe, one (1) 6-inch blind flange, one (1) 36-inch by 36-inch

IFR inspection hatch equipped with a 6-inch manual gauging hatch, one (1) 10-inch Enraf

ATG, and one (1) 72-inch by 24-inch IFR installation hatch.

External coating on the Vito temperature/water probe flange, Enraf ATG, and blind flange nozzles exhibit flaking and base metal exposure with surface corrosion. The IFR inspection hatch is provided with one (1) 6-inch manual gauging hatch. Currently, there is no means of locking the manual gauging hatch cover while not in use. Confined space labeling on the IFR inspection hatch is faded and peeling.

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 gauging hatch for manual gauging operations. An Enraf ATG and Vito temperature/water probe are provided for automatic tank gauging and sampling operations. 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 passed the field operability test and was visually inspected from the IFR. According to facility personnel, all gauges are fully functional and reading correctly.

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. Threaded connections are no longer used as they are a potential leak path.

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 18-inches clearance between the appurtenance and staircase railing. OSHA mandates a minimum 26-inches clearance between appurtenances and staircase railings. Handrail heights for the spiral staircase are 43-inches tall, where API requires handrails to be between 30-inches and 34-inches high.

External coating for handrails and balusters provided for two (2) concrete secondary containment access stairs, one (1) concrete main suction crossover stairs, and the spiral staircase stair treads exhibit failure with flaking, base metal exposure, and surface corrosion.

Crossover stairs provided for the main suction piping is in contact with the main suction flanged connection, potentially inducing unintentional stress to the main suction piping system during thermal expansion of the piping, stairway, and normal lateral pipe movement.

No contact point corrosion was observed during inspection.

6.7 GROUNDING AND BONDING

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

7. TANK AND PIPING COATING

The tank shell, fixed roof, and piping are provided with an epoxy polyurethane coating system. Internal coating for the tank shell exhibit spot coating failure with base metal exposure, surface corrosion, and corrosion staining. For TS corrosion protection, the tank bottom is provided with a three-coat epoxy coating system. Internal coating for the tank bottom and attachments exhibit failure with base metal exposure, surface corrosion, and corrosion staining. External coating provided for the main suction, low suction, water draw-off, and receipt piping within the internal tank exhibit failure with base metal exposure, surface corrosion, and corrosion staining. External coating for the tank shell and fixed roof exhibits widespread chalking, indicating the coating system is near the end of its life cycle. External coating on the receipt, receipt thermal relief crossover piping, PST, and secondary containment drain piping exhibits flaking, cracking, and base metal exposure with surface corrosion. Flow arrows for the receipt piping exhibit fading and peeling.

DFT was 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.

The receipt diffuser orientation is such that the flow of fuel into the tank encounters appurtenances less than 180°. AW standard design mandates that the receipt diffuser is oriented such that the flow of fuel into the tank does not encounter appurtenances for at least 180°.

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 main suction is provided with adjustable saddle supports and a U-bolt pipe support. One (1) main suction U-bolt pipe support, adjacent to the tank shell, is not anchored to the secondary containment dike floor and may not be adequately supporting the main suction pipe. One (1) pipe support provided for the receipt thermal relief crossover piping is not provided with Teflon isolation, or equivalent, and has a loosened

U-bolt pipe support. Contact point corrosion was observed during inspection.

PST piping is provided threaded connections, one (1) sight flow indicator, and no isolation between pipe supports. Threaded connections and sight flow indicators are no longer used in this application as they are a potential leak path. The PST piping is provided an inadequate pipe supporting system.

Current configuration allows the piping to sag and is using the receipt piping for support with no isolation between the pipe support and receipt/PST piping. Coating failure and surface corrosion was observed during inspection.

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. Currently, the OOS AFFF system is still attached to the tank.

10. SECONDARY CONTAINMENT

Tank 2 is located within a concrete containment dike covered with a flexible membrane liner (FML).

The containment dike is capable of holding approximately 315,000 gallons of liquid, satisfying the 1-foot UFC secondary containment capacity requirement. The secondary containment is in good overall condition with no visual signs of pathways for liquid to escape 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 let sit 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 2 is equipped with an ICCP system to protect the tank bottom from SS corrosion. The rectifier for

Tank 2 was operating at 23.31 volts and 0.24 amps. Three (3) potential readings were taken for Tank

2. All readings met the -850 millivolt National International (NACE) CP acceptance criteria. CP readings are consistent with the previous CP report dated May 2018.

C. FINDINGS AND RECOMMENDATIONS

Based on the OOS API 653 inspection of Tank 2 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 Internal Shell Plate Pitting

OBSERVATION: Three (3) scattered pits were observed on the internal tank shell with pit depths of 0.075-inch, 0.070-inch, and 0.060-inch. Remaining life of the deepest pit based on criteria set forth in API 653 is 3.23 years. The deepest pit is located within the

2nd shell course, 46-feet circumferentially from Manway 1 and 7 7/8-inches up from the horizontal seam weld with a remaining plate thickness of 0.121-inches.

REFERENCE: API 653, Section 4.3.2.2

RECOMMENDATION: Provide a lap patch or puddle weld repair at three (3) pitted locations. Repairs shall be performed IAW API 653 requirements. An emergency RMMR service order will be put in place for this recommendation prior to the tank returning to service.

1.2 Horizontal Seam Weld Repair

OBSERVATION: The horizontal seam weld for the first shell course exhibits pin holes and surface corrosion.

REFERENCE: UFC 3-460-03, Section 8-4.1 (E)

RECOMMENDATION: Provide approximately 3 linear feet of weld repair on the horizontal weld seam adjacent to the receipt nozzle penetration. An emergency RMMR service order will be put in place for this recommendation prior to the tank returning to service.

1.3 IFR Flotation Panel

OBSERVATION: The bottom skin of two (2) extra flotation panels has disbonded from the inner honeycomb cell.

REFERENCE: UFC 3-460-03, Section 8-9.1.1

RECOMMENDATION: Replace two (2) extra flotation panels on the bottom side of the IFR. An emergency

RMMR service order will be put in place for this recommendation prior to the tank returning to service.

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: Three (3) weld projections on the internal tank shell exhibit porosity, lack of fusion, and voids, creating crevice corrosion on the tank shell.

REFERENCE: UFC 3-460-03, Section 8-3.2 (E)

RECOMMENDATION: Remove three (3) internal weld projections on shell course 1, adjacent to the low suction, Manway 2, and the manual gauging hatch stilling well. An emergency

RMMR service order will be put in place for this recommendation prior to the tank returning to service.

2.2 IFR Primary 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 (E)

RECOMMENDATION: Provide the IFR with a new primary wiper seal. No signs of damage or shell gapping were observed on the secondary wiper seal. An emergency RMMR service order will be put in place for this recommendation prior to the tank returning to service.

2.3 Fixed Roof Center Support

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

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

RECOMMENDATION: Provide sealant at the fixed roof center support crevice, approximately 75 linear feet.

2.4 IFR Penetration Seals

OBSERVATION: 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.

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.

2.5 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 60 ft2 of spot coating repair to the internal tank shell.

2.6 Tank Internal Piping Coating

OBSERVATION: External coating for the tank receipt diffuser, main suction, low suction, and water draw-off, including pipe supports, exhibit failure with base metal exposure, surface corrosion, and corrosion staining.

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

RECOMMENDATION: Provide approximately 60 ft2 of external coating repair to the tank internal piping.

2.7 Tank Bottom Internal Coating

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

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

RECOMMENDATION: Provide approximately 870 ft2 (75%) of coating repair to the internal tank bottom and appurtenances.

2.8 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.

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

RECOMMENDATION: Provide a full recoat of the tank shell, approximately 3,800 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 Shell Nozzle External Coating

OBSERVATION: External coating on the LLA/LLLA chamber assembly exhibits flaking and base metal exposure with surface corrosion.

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

RECOMMENDATION: Provide approximately 10 ft2 of spot coating repair on the LLA/LLLA chamber assembly.

2.10 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.

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

RECOMMENDATION: Provide a full recoat of the tank fixed roof, approximately 1,150 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 at locations that do not have surface corrosion.

2.11 Fixed Roof Nozzles External Coating

OBSERVATION: External coating on the Vito temperature/water probe flange, Enraf ATG, and one

(1) blind flange nozzles exhibit flaking and base metal exposure with surface corrosion.

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

RECOMMENDATION: Provide approximately 20 ft2 of spot coating repair on the Vito temperature/water probe flange, Enraf ATG, and one (1) blind flange nozzles.

2.12 Receipt and PST Piping External Coating

OBSERVATION: External coating on the receipt, receipt thermal relief crossover piping, PST, and drain piping exhibits flaking, cracking, and base metal exposure with surface corrosion.

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

RECOMMENDATION: Provide approximately 5,000 ft2 of external coating repair on the receipt, PST, and drain piping.

2.13 Access and Crossover Stairs External Coating

OBSERVATION: External coating for the handrails and balusters provided for the secondary containment and crossover stairs and the spiral staircase stair treads exhibit failure with flaking, base metal exposure, and surface corrosion.

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

RECOMMENDATION: Provide approximately 100 ft2 of external coating repair on the for the handrails and balusters provided for the secondary containment and crossover stairs and spiral staircase stair treads.

2.14 Main Suction Crossover Stair Clearance

OBSERVATION: Crossover stairs provided for the main suction piping are in contact with the flanged connection, potentially inducing unintentional stress to the main suction piping system during thermal expansion of the stairway and normal lateral 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 structure.

2.15 Water Draw-Off Piping

OBSERVATION: PST piping is provided threaded connections, one (1) sight flow indicator, no isolation between pipe supports, and an inadequate pipe supporting system.

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

RECOMMENDATION: Provide flanged or socket welded connections, remove one (1) sight flow indicator, and provide the piping system with pipe supports IAW UFC requirements.

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)

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

3.2 Main Suction Pipe Support

OBSERVATION: One (1) main suction U-bolt pipe support, adjacent to the tank shell, 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 Internal Receipt Diffuser

OBSERVATION: The receipt diffuser orientation is such that the flow of fuel into the tank encounters appurtenances less than 180°.

REFERENCE: AW 78-24-27, Sheet D-08, Detail 1, Note 2

RECOMMENDATION: Orientate the receipt diffuser such that the flow of fuel into the tank does not encounter appurtenances for at least 180°.

3.4 HLCV DB&B Valves

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

REFERENCE: UFC 3-460-01, Section 6-5.D.3

RECOMMENDATION: Replace two (2) 8-inch receipt ball valves with DB&B valves.

3.5 Receipt Thermal Relief Crossover Piping

OBSERVATION: One (1) pipe support provided for the receipt thermal relief crossover piping is not provided with Teflon isolation, or equivalent, and has a loosened U-bolt pipe support.

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

RECOMMENDATION: Provide the receipt thermal relief crossover piping with Teflon isolation, or equivalent, and tighten the U-bolt pipe support.

3.6 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.

3.7 Fixed Roof Conduit Support

OBSERVATION: Three (3) conduit supports for the Vito temperature/water probe are not sealed to the fixed roof. Coating failure was observed at the time of inspection.

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

RECOMMENDATION: Seal three (3) conduit supports for the Vito temperature/water probe to the fixed roof.

3.8 AFFF System

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

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

RECOMMENDATION: Remove the AFFF system, to include the discharge chamber, as it is no longer in use. Before AFFF removal, consult the local Fire Chief for approval. If approval is not granted, coat piping red IAW MIL-STD-161H.

3.9 HLA, HHLA, and HLCV Float Pilot Piping

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

3.10 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 standard design. The PST system should include tubing to the HLA, HHLA, and HLCV float pilot to facilitate wet testing of the chambers.

3.11 Manway 1 and Manway 2 Davit Arms

OBSERVATION: Manway 1 and Manway 2 are not equipped with davit arms provided with grease fittings.

REFERENCE: API 650, Section 5.8.3.5

RECOMMENDATION: Provide Manway 1 and Manway 2 davit arms with grease fittings.

3.12 Receipt Piping Flow Arrows

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

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

RECOMMENDATION: Replace flow arrows for receipt piping.

3.13 Confined Space Labeling

OBSERVATION: Confined space labeling on IFR inspection hatch and two (2) manways exhibit fading and peeling.

REFERENCE: API 650, Section 5.7.2.10

RECOMMENDATION: Replace confined space labeling for the IFR inspection hatch and two (2) manways.

3.14 Spiral Staircase Clearance

OBSERVATION: The clearance between the HLCV float pilot and spiral staircase handrail is approximately 18-inches, less than OSHA required 26-inch clearance. Additionally, handrail heights are 43-inches tall, where API requires handrails to be between

30-inches and 34-inches high.

REFERENCE: OSHA 1910.25 (d)(1)

RECOMMENDATION: Extend the stair treads or provide a work platform at the HLCV float pilot to allow for minimum 26-inches of clear space between the spiral staircase handrail and appurtenance and rework the handrails to achieve a height of 30-inches to 34-inches IAW API.

3.15 Internal Pipe Supports

OBSERVATION: The internal pipe supports for two (2) water draw-off supports are not provided with isolation.

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

RECOMMENDATION: Provide Teflon isolation or Teflon coated u-bolts at two (2) water-draw supports.

3.16 Enraf ATG and Varec TLG Conduit

OBSERVATION: Conduit provided for the Enraf ATG and Varec TLG is in direct contact with the tank chime and shell. No contact point corrosion was observed.

REFERENCE: BMP

RECOMMENDATION: Rework the conduit provided for the Enraf ATG and Vito temperature/water probe to avoid direct contact with the tank chime and shell.

APPENDIX A: ENGINEERING CALCULATIONS AND DRAWINGS

3 4 56

14 15

MW1

MW2

WATER DRAW-OFF

SUPPORT (TYP.2)

FIXED ROOF

SUPPORT (TYP.4)

RECEIPT, MAIN SUCTION,

LOW SUCTION SUPPORT

(TYP.6)

ENRAF ATG

IFR ACCESS

LADDER/MANUAL GAUGE

HATCH (TYP.2)

ANTI-ROTATION CABLE

(TYP.2)

IFR LEG SUPPORT

(TYP.5)

VITO PROBE

SUPPORT (TYP.2)

SUMP

LAP PATCH

(TYP.3)

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

A E

C

A E

C

C A

W

N A

TANK INFORMATION

TANK NO.: TANK 2 (FACILITY 5017)

MANUFACTURER: UNKNOWN

YEAR BUILT: 1953

TANK DIAMETER: 35'-0"

TANK HEIGHT: 28'-6"

NOMINAL CAPACITY: 4,500 BBL

PRODUCT: JET-A (F-24)

PRODUCT SPECIFIC GRAVITY: 0.84

GPS COORDINATES: 30.970092°, -83.210410°

N A

B O

T T

M

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

A E

C

A E

C

C A

W

N A

TANK INFORMATION

TANK NO.: TANK 2 (FACILITY 5017)

MANUFACTURER: UNKNOWN

YEAR BUILT: 1953

TANK DIAMETER: 35'-0"

TANK HEIGHT: 28'-6"

NOMINAL CAPACITY: 4,500 BBL

PRODUCT: JET-A (F-24)

PRODUCT SPECIFIC GRAVITY: 0.84

GPS COORDINATES: 30.970092°, -83.210410°

N A

LEGEND:

- UTT READING (INCHES)

NOTES:

1. REFER TO TABLE 2, "BOTTOM CIRCUMFERENTIAL UTT

MEASUREMENTS", IN APPENDIX A FOR BOTTOM

CIRCUMFERENTIAL UTT MEASUREMENTS.

2. REFER TO TABLE 1, "BOTTOM UTT MEASUREMENTS", IN

APPENDIX A FOR BOTTOM PLATE UTT MEASUREMENTS.

.XXX

SUMP DETAIL

.486

.488

.482

.484

.526

.531

.525 .522

ROOF PERIMETER HANDRAIL

GROUNDING

CABLE (TYP. 4)

VAREC TLG

VAREC

VAREC TLG SUPPORT

(TYP.4)

LEAK DETECTION

PORT (TYP. 4)

CONCRETE

RINGWALL

NEW BOTTOM

ORIGINAL BOTTOM

LLA/LLLA

SUPPORT (TYP.2)

CONDUIT SUPPORT

(TYP.10)

AFFF SUPPORT

(TYP.2)

OVERFLOW VENT

(TYP.2)

1-2 1-3 1-41-1

2-1

3-1

4-1

5-1

5-4 5-2 5-3

2-2 2-3 2-4

3-43-33-2

4-4 4-2 4-3

MW1

N1

N3

N2

N4

N5

N6

N7

N8

MW2

N9

N10

N12

N11

4'-6"

6'-0"

6'-0"

6'-0"

6'-0"

1'-6"

NAMEPLATE

.244

.243

.242

.264

.265

.259

.245

.244

.244

.345

.247

.249

UPPER PLATFORM

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

A E

C

A E

C

C A

W

N A

TANK INFORMATION

TANK NO.: TANK 2 (FACILITY 5017)

MANUFACTURER: UNKNOWN

YEAR BUILT: 1953

TANK DIAMETER: 35'-0"

TANK HEIGHT: 28'-6"

NOMINAL CAPACITY: 4,500 BBL

PRODUCT: JET-A (F-24)

PRODUCT SPECIFIC GRAVITY: 0.84

GPS COORDINATES: 30.970092°, -83.210410°

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 INDIVIDUAL SHELL PLATE UTT READINGS.

NOZZLE

SCHEDULE

NOZZLE SIZE NOTES

MW1 36" MANWAY

N1 8" RECEIPT

N2 1

" LLA/LLLA

N3 1

" LLA/LLLA

N4 1

" HLA/HHLA

N5 1

" HLA/HHLA

N6 1

" HLCV FLOAT PILOT

N7 1

" THREADED PLUG

N8 1

" HLCV FLOAT PILOT

MW2 36" MANWAY

N9 16" MAIN SUCTION

N10 4" LOW SUCTION

N11 1

" WATER DRAW-OFF

N12 6"

AFFF DISCHARGE

CHAMBER

LEGEND:

- UTT READING (INCHES).XXX

SPIRAL

STAIRCASE

MANUAL GAUGING

HATCH

1 2 3 4

5 6 7

8 9

10 11

15 16

17 18

N16

N13

N14

N15

N17

N18

N19

N20

N21

N22

N23

N24

LAP PATCH

(TYP.12)

CONDUIT SUPPORT

(TYP.3)

WELDED NUT

PERIMETER VENT

(TYP.2)

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

A E

C

A E

C

C A

W

N A

TANK INFORMATION

TANK NO.: TANK 2 (FACILITY 5017)

MANUFACTURER: UNKNOWN

YEAR BUILT: 1953

TANK DIAMETER: 35'-0"

TANK HEIGHT: 28'-6"

NOMINAL CAPACITY: 4,500 BBL

PRODUCT: JET-A (F-24)

PRODUCT SPECIFIC GRAVITY: 0.84

GPS COORDINATES: 30.970092°, -83.210410°

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

A E

C

A E

C

C A

W

N A

TANK INFORMATION

TANK NO.: TANK 2 (FACILITY 5017)

MANUFACTURER: UNKNOWN

YEAR BUILT: 1953

TANK DIAMETER: 35'-0"

TANK HEIGHT: 28'-6"

NOMINAL CAPACITY: 4,500 BBL

PRODUCT: JET-A (F-24)

PRODUCT SPECIFIC GRAVITY: 0.84

GPS COORDINATES: 30.970092°, -83.210410°

N A

LEGEND:

- SURFACE CORROSION

NOTES:

1. REFER TO TABLE 4, "FIXED ROOF UTT MEASUREMENTS",

IN APPENDIX A FOR INDIVIDUAL SHELL PLATE UTT

READINGS.

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

MEASUREMENTS", IN APPENDIX A FOR INDIVIDUAL SHELL

PLATE UTT READINGS.

NOZZLE

SCHEDULE

NOZZLE

SIZE

NOTES

N13 1" THREADED PLUG

N14 1" THREADED CAP

N15 1" THREADED PLUG

N16 2" VAREC TLG

N17 6" BLIND FLANGE

N18 6" VITO TEMPERATURE/WATER PROBE

N19 2" THREADED PLUG

N20 2" THREADED PLUG

N21 72"x24" IFR INSTALLATION HATCH

N22 36"x36" IFR INSPECTION HATCH

N23 10" ENRAF ATG

N24 2" THREADED PLUG

TABLE 1 – BOTTOM UTT MEASUREMENTS

Plate 1 Plate 2 Plate 3 Plate 4 Plate 5 .313 .312 .313 .308 .315 .317 .314 .314 .311 .316 .311 .312 .317 .316 .316 .311 .312 .312 .310 .315 .314 .315 .313 .313 .316

Avg. .312 .311 .316 .314 .314 Plate 6 Plate 7 Plate 8 Plate 9 Plate 10 .311 .313 .310 .315 .311 .312 .305 .310 .315 .313 .313 .311 .312 .310 .312 .311 .314 .309 .313 .311 .313 .308 .309 .315 .312

Avg. .312 .312 .312 .308 .313 Plate 11 Plate 12 Plate 13 Plate 14 Plate 15 .311 .311 .314 .311 .314 .310 .309 .312 .312 .311 .319 .311 .311 .310 .311 .311 .314 .315 .309 .315 .310 .312 .310 .313 .311

Avg. .313 .312 .312 .311 .312 Plate 16 Plate 17 Plate 18 Plate 19 Plate 20 .307 .308 .310 .306 .307 .309 .307 .309 .308 .307 .309 .306 .308 .302 .306 .309 .308 .307 .307 .313 .308 .309 .307 .307 .309

Avg. .308 .307 .309 .307 .307 Plate 21 Plate 22 Plate 23 Plate 24 Plate 25 .307 .307 .304 .308 .305 .307 .309 .308 .308 .309 .308 .308 .310 .307 .307 .308 .302 .308 .310 .309 .308 .310 .308 .308 .309

Avg. .306 .308 .308 .308 .308 Plate 26 Plate 27 .308 .309 .309 .310 .309 .308 .307 .309 .308 .308

Avg. .308 .309

Thickness represented in inches.

Average bottom plate thickness: .310”

TABLE 2 – BOTTOM CIRCUMFERENTIAL UTT MEASUREMENTS

Ultrasonic Thickness Survey of Tank Floor 0' 2' 4' 6' 8' 10' 12' 14' 16' 18' 20' 22' 24' 26' 28' 30' 32'

.308 .308 .307 .309 .309 .309 .309 .308 .308 .310 .308 .307 .309 .309 .308 .308 .310 34' 36' 38' 40' 42' 44' 46' 48' 50' 52' 54' 56' 58' 60' 62' 64' 66'

.307 .306 .306 .307 .307 .313 .308 .309 .308 .307 .309 .302 .309 .307 .308 .307 .306 68' 70' 72' 74' 76' 78' 80' 82' 84' 86' 88' 90' 92' 94' 96' 98' 100'

.307 .309 .307 .308 .308 .307 .302 .304 .308 .308 .308 .310 .305 .309 .310 .307 .308 102' 104' 106' 108' 110' .309 .310 .307 .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: .308”

TABLE 3 - SHELL UTT MEASUREMENTS

Roof

Shell Course 5

Plate 5-1 Plate 5-2 Plate 5-3 Plate 5-4

.186 .194 .193

.190 .195 .191 N/A

.194 .193 .191 .189

Avg. .192

Circumferential Weld C5

Shell Course 4

Plate 4-1 Plate 4-2 Plate 4-3 Plate 4-4

.199 .204 .205

.203 .207 .205

.203 .206 .203 .195

Avg. .203

Circumferential Weld C4

Shell Course 3

Plate 3-1 Plate 3-2 Plate 3-3 Plate 3-4

.180 .189 .189

.185 .188 .188

.191 .188 .187

.182

Avg. .187

Circumferential Weld C3

Shell Course 2

Plate 2-1 Plate 2-2 Plate 2-3 Plate 2-4

.187 .198 .200

.193 .199 .199

.196 .201 .195

.196

Avg. .196

Circumferential Weld C2

Shell Course 1

Plate 1-1 Plate 1-2 Plate 1-3 Plate 1-4

.248 .243 .263 .248 .251 .257 .244 .245 .249 .241 .243 .249

.251 .243 .263 .249 .250 .244 .243 .246 .250 .242 .244 .250

.250 .242 .256 .244 .244 .252 .239 .244 .246 .234 .239 .244

Avg. .251 .249 .245 .243

Circumferential Weld C1

Thickness represented in inches.

Average shell course 1: .247”

Average shell course 2: .196”

Average shell course 3: .187”

Average shell course 4: .203”

Average shell course 5: .192”

TABLE 4 – FIXED ROOF UTT MEASUREMENTS

Plate 1 Plate 2 Plate 3 Plate 4 Plate 5

.179 .178 .187 .179 .190 .193 .197 .196 .197 .199

.183 .186 .199 .197 .199

.180 .179 .185 .182 .189 .190 .199 .198 .198 .195

Avg. .180 .184 .192 .197 .198

Plate 6 Plate 7 Plate 8 Plate 9 Plate 10

.194 .193 .189 .187 .189 .187 .192 .188 .182 .182

.195 .187 .191 .195 .187

.195 .193 .191 .188 .188 .191 .197 .191 .184 .185

Avg. .194 .188 .189 .193 .184

Plate 11 Plate 12 Plate 13 Plate 14 Plate 15

.190 .190 .201 .201 .199 .194 .192 .194 .182 .185

.191 .202 .197 .192 .179

.187 .189 .199 .192 .197 .196 .193 .193 .183 .185

Avg. .189 .199 .197 .193 .183

Plate 16 Plate 17 Plate 18 .181 .184 .199 .199 .196 .197 .187 .200 .199 .184 .186 .200 .197 .199 .196 Avg. .184 .199 .197

Thickness represented in inches.

Average fixed roof: .191”

TABLE 5 – TANK DFT MEASUREMENTS

External Shell Coating Thickness Average Standard Deviation Number of Readings Minimum Maximum

13.24 2.78 20 8.79 18.66

Internal Shell Coating Thickness

18.08 3.54 20 13.42 25.18

Fixed Roof Coating Thickness

9.558 1.58 15 6.36 12.78

Tank Bottom Coating Thickness

19.51 4.55 15 10.62 30.43

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" .252 .246 .249 .248 .246 3'-6'' 0'-6" 0'-0" Manway 1

N1 8'' D 23" x 26" .237 .497 .481 .490 .495 1'-3'' - 26'-6'' Receipt

N2 1 ½" - - - TH TH TH TH 4'-2'' 4'-1'' 40'-0'' LLA/LLLA

N3 1 ½" - - - TH TH TH TH…