Attachment J.3 -Little Rock-Fac 1344 (Tank 2)-FINAL-2018.pdf

US Army Corps of Engineers Omaha District

API 653 In‐Service Inspection Report

Little Rock Air Force Base Facility 1344

Tank #2

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

(USACE POL‐MCX)

27 February 2018

API 653 In‐Service Inspection Report Little Rock AFB, Arkansas

Table of Contents

ACRONYMS AND ABBREVIATIONS………………………………………………………………………………………………………………………4

GENERAL SUMMARY……………………………………………………………………………………………………………………………………………………….5

INSPECTION DATE ………………………………………………………………………………………………………………………………………………………….6

PREVIOUS INSPECTION DATES ……………………………………………………………………………………………………………………………………..6

RECOMMENDED FUTURE INSPECTION DATES …………………………………………………………………………………………………………….6

GENERAL TANK INFORMATION …………………………………………………………………………………………………………………………………….7

A. GENERAL PROJECT INFORMATION………………………………………………………………………………………………………………………….8

1. API 653 Inspection………………………………………………………………………………………………………………………………………………..8

2. Site Information ……………………………………………………………………………………………………………………………………………………8

B. TANK INSPECTION COMMENTS ……………………………………………………………………………..……………………………………………….8

1. Tank Construction ………………………………………………………………………………………………………………………………………………..8

2. Tank Foundation ………………………………………………………………………………………………………………………………………………….8

3. Tank Shell…………………………………………………………………………….……………………………………………………………………………….8

4. Fixed Roof …………………………………………………………………………………………………………………………………………………………….9

5. Tank Appurtenances …………………………………………………………………………………………………………………………………………….9

a. Fixed Roof ………….………….…………………………………………………………………………………………………………………9

b. Gauging ………………..…………………………………………………………………….…………………………………………………….9

c. Level Alarms ……………..…………………………………………………….……………………………………………………………….9

d. Stairs and Platforms ………………………………………………………………………………………………………………………….9

e. Grounding and Bonding ………………….…………………………………………………………………………………………………9

6. Tank Coating …………………………………..……………………………………………………………………………………………………………………9

7. Tank Piping System ………………………………………………………..……………………………………………………………………………..……..9

8. Fire Protection System ………………………………………………………..……………………………………………………………………………….9

9. Secondary Containment………………………………………………………..…………………………………………………………………………….10

C. FINDINGS AND RECOMMENDATIONS ………………………………………………………………..……………………….…………………….11

1. MANDATORY REPAIRS per API 653, UFC 3-460-01, or AW 78-24-27 Standards..…………………………………………………11

2. RECOMMENDED REPAIRS to Fully Comply with API 653, UFC 3-460-01, or AW 78-24-27 Standards ….………………11

3. RECOMMENDED REPAIRS as Part of Regular Maintenance…..…………………………………………………………………………….14

D. INSPECTION INTERVALS ………..……………………………………………………..………………………………………………………………………16

1. Routine In-service Inspection ….……………………………………………………..………………………………………………………………….16

2. External Inspection …....…………………………………………………..……………………………………………………………………………..….16

3. Ultrasonic Thickness Inspection …………….…………………………………………..………………………………….…………………………..16

4. Internal Inspection ………………….……………………………………..……………………………………………………………………………..…..16

APPENDIX A: ENGINEERING CALCULATIONS AND DRAWINGS ..………………………………………………………..……………………..17

API 653 Appendix B Settlement Evaluation ……..………………………………………………………..……………………………18

Table 1 – Tank Evaluation Measurements ……..…..………………………………………………………..………………………….23

Drawing 1, Shell Roll-Out ……..………………………………………………………..…………………………………………….………..24

Table 2 – Shell Ultrasonic Thickness Readings ……..………………………………………………………..……………………….26

Shell Service Life Evaluation …….………………………………………………………..………………………………………………….27

Drawing A-2, Fixed Roof Layout ……..………………………………………………………..…………………………………………….30

Fixed Roof Service Life Evaluation …….………………………………………………………..…………………………………………32

Table 3 – Nozzles and Appurtenances ……..………………………………………………………..……………………………………34

Table 7 – Dry Film (Coating) Thickness ……..………………………………………………………..………………………………….35

Out-of-Roundness Evaluation …….....………….………………………………………………………..………………………………….36

APPENDIX B: API 653 CHECKLISTS FOR TANK INSPECTIONS ..………………………………………………………..………………………..47

APPENDIX C: PHOTOGRAPHS .………………………………………………………..……………………………………………………………………………53

ACRONYMS AND ABBREVIATIONS

AFB Air Force Base

AFFF Aqueous Film Forming Foam

API American Petroleum Institute

ASNT American Society of Non‐Destructive Testing

ATG Automatic Tank Gauge

BBL Barrel

BMP Best Management Practice

CFR Code of Federal Regulations

DB&B Double Block and Bleed

DOD Department of Defense

HLA High Level Alarm

HLCS High Level Control Shutoff

HHLA High‐High Level Alarm

IAW In Accordance With

IFR Internal Floating Roof

LLA Low Level Alarm

LLLA Low‐Low Level Alarm

MTG Manual Tank Gauge

NDT Non‐Destructive Testing

NFPA National Fire Protection Association

P/V Pressure/Vacuum

OOR Out-of-Roundness

OOS Out-of-Service

TRV Thermal Relief Valve

UFC Unified Facilities Criteria

USACE United States Army Corps of Engineers

UT Ultrasonic Testing

VT Visual Testing

GENERAL SUMMARY

Summary of Inspection

POND was retained by the United States Army Corps of Engineers (USACE) to provide an in-service

(external) tank inspection on Tank #2 (Facility 1344), at Little Rock Air Force Base (AFB) in

Jacksonville, Arkansas.

The in-service inspection was performed on 11-13 December 2017. Results of this inspection identified repairs/upgrades recommended to comply with United Facilities Criteria (UFC) 3-460-03, UFC 3-460-01, Department of Defense (DOD) AW 78-24-27, American Petroleum Institute (API)

650/653, and industry standards.

Tank #2 is a welded steel, vertical, aboveground Jet-A (F-24) storage tank. The tank was originally constructed in 1954 to the design standard of API 650, according to the current data plate. Tank #2 is 85’-0” in diameter and 38’-10” high with a nominal capacity of 29,062 barrels (BBL) (1,220,604 gallons).

The tank was repaired/altered in 2014 by Cape Inc. to comply with API 653, as a result of an out-of-service (OOS) inspection conducted on Tank #2 on 23-25 April 2013. A new automatic tank gauge

(ATG) hatch, manual tank gauge (MTG) hatch, low and low-low level nozzles, davit to manway #2, and water probe nozzle were installed, as well as internal issue piping modification.

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

Edition and evaluated IAW UFC and applicable industry standards. Contained in this report is a detailed account of the tank inspection, a summary of the non-destructive testing (NDT), and conclusions derived from inspection and testing. Findings from this inspection are further detailed in Section B of this report. Identified repairs and upgrades are classified and listed in Section C of this report.

INSPECTION DATE

API In‐Service (External) Inspection Date: 11-13 December 2017

Equipment Used:

Manufacturer: GE Krautkramer Ultrasonic Thickness Gauge w/ Topcoat Model Number: DMS Go+ Calibration Method: Top Coat Step Wedge Calibration

Manufacturer: Fisher Technologies Dry Film Thickness Gauge Model Number: Dual Scope MPOR Calibration Method: Calibration to Known Thickness Standard

Manufacturer: Technidea Zip Level Gauge Model Number: PRO-2000 Calibration Method: Calibration to Known Height Standard

Inspector(s):

Bart Bartlett, EIT John Cronin, EIT

PREVIOUS INSPECTION DATES

API Out‐of‐Service (Internal) Inspection Date: 23 April 2013

API In‐Service (External) Inspection Date: 23 April 2013

RECOMMENDED FUTURE INSPECTION DATES

Routine In-Service: Monthly

Out-of-Service (Internal): April 2033 (Assumed)

In-Service (External) without UTT: December 2022

In-Service (External) with UTT: December 2032

Bart Bartlett, EIT John Cronin, EIT Brian W. Lunsford, PE

Project Manager/Integrity Engineer Integrity Engineer Program Manager

API 653 Inspector # 56077 API 653 Inspector # 77554 ASNT NDT Level III API 653 Inspector # 28526

GENERAL TANK INFORMATION

ITEM DESCRIPTION

Owner U.S. Air Force

Location Little Rock AFB

Facility Number 1344

Tank Number Tank #2

State / Country Arkansas, USA

City Jacksonville

Inspection Date 11-13 December 2017

Tank Manufacturer Chicago Bridge & Iron Company

Design Standard API-650

Date of Construction 1954

Tank Contents Jet-A (F-24)

Tank Serial Number N/A

Tank Diameter 85’-0”

Shell Height 38’-10”

Product Height 29’-7”

Tank Capacity 29,062 BBL (1,220,604 gallons) Max Fill Capacity

Foundation Concrete Ring Wall

Construction

Bottom Cone-Down / Lap-Welded Steel Plates

Shell Butt-Welded Steel Plates / Five (5) Shell Courses

Floating Roof Aluminum Honeycomb Floating Pan / Double Wiper

Seal Fixed Roof Umbrella / Lap-Welded Steel Plates

Material

Bottom Carbon Steel

Shell Carbon Steel

Floating Roof Aluminum

Fixed Roof Carbon Steel

Cathodic Protection Yes / Impressed Current

Interior Coating System Epoxy / Unknown Specification / 100% Coated per previous OOS report

Exterior Coating System Epoxy / Unknown Specification / 100% Coated

Level Gauging Varec 2500 / 8” Automatic Tank Gauge

Overfill Protection HLA - 31’-3” / HHLA – 32’-3” / HLCS – 31’- 1” / No LLA or LLLA

Piping Receipt 8" Carbon Steel

Recirculation/Issue 8" Carbon Steel

Low Suction 4" Disconnected – Trip Hazard

Water Draw‐Off 2" Stainless Steel

Main Suction 8” Carbon Steel

Level Alarms Enraf ATG Type of Internal Floating Roof Aluminum Honeycomb Floating Pan / Double Wiper Seal

A. GENERAL PROJECT INFORMATION

API 653 Inspection

An in-service API 653 inspection was performed 11-13 December 2017 on Tank #2 (Facility 1344).

Results of this inspection identified some recommended repairs and upgrades required to comply with

API 650/653, UFC 3-460-01/3-460-03, AW 78-24-27, and industry standards.

Site Information

Little Rock AFB is located in Jacksonville, AR. Little Rock AFB is a part of Air Mobility Command and provides the DOD with the largest C-130 fleet in the world.

B. TANK INSPECTION COMMENTS

1. Tank Construction

Tank #2 is an 85’-0” diameter by 38’‐10” tall (post new floor), F‐24 (Jet A), aboveground vertical storage tank with a nominal capacity of 29,062 BBL. The tank was constructed by Chicago Bridge and Iron in 1954 to API Standard 650, according to a repair plate installed in 2014. As‐built drawings of the original construction were not available; however, drawings from the 2014 alterations were available. An API 653

OOS inspection was conducted on Tank #2 on 23-25 April 2013. As a result of this inspection, repairs and modifications were conducted in 2014. A new ATG hatch, MTG hatch, low and low-low level nozzles, water probe nozzle, internal issue piping modifications, and davit to manway #2 were provided.

2. Tank Foundation

The tank rests on a concrete ring wall foundation. A new bottom was installed above the original tank bottom.

The original bottom now acts as a foundation for the tank. The foundation was visually evaluated for spalling, cracks, and vegetation. Cracking and spalling were observed circumferentially and radially adjacent to the chime requiring repair and sealant. A shell settlement survey was performed during the inspection in accordance with Appendix B of API Standard 653. Settlement results are listed in Appendix A.

3. Tank Shell

The shell is a cylindrical design, consisting of five (5) butt‐welded steel shell courses. The shell was evaluated for roundness, peaking, and banding. The coating was evaluated for disbonding, adhesion, deterioration, and discoloration. The exterior coating is in good, overall condition. Four (4) shell overflow vents and screens were evaluated and found to be in serviceable condition. The shell was evaluated for the remaining metal thickness utilizing ultrasonic technology. Thickness measurements are listed in the engineering data in Appendix A.

Due to shell course 1 having an average thickness above ½”, requirements for a brittle fracture analysis were checked IAW API 653 Table 5.1, Brittle Fracture Considerations. The tank is provided with an API

653 nameplate. By item 10 of table 5.1 a brittle fracture analysis is not required as the tank was repaired to API 653.

Refer to Drawing 1, “Shell Roll-Out” and Table 2, “Shell Ultrasonic Thickness Readings” in Appendix A for plate location and thickness data.

4. Tank Roof

The fixed roof is of umbrella construction with fully coated lap-welded steel plates. Fixed roof plates were examined using ultrasonic thickness testing (UTT) and visual testing (VT) methods. Five (5) UTT measurements were taken on six (6) fixed roof plates, accessible from the catwalk platform. UTT measurements indicated no significant metal loss on fixed roof plates.

Refer to Drawing 2, “Fixed Roof Layout” in Appendix A for plate location and thickness data.

5. Tank Appurtenances

a. Fixed Roof

The fixed roof nozzles were visually and ultrasonically inspected where accessible. The fixed roof is equipped with two (2) 6” vents, one (1) 28”x28” gauging hatch with ladder access, one (1) 24” diameter manway, one (1) 6” Vito temperature/water probe nozzle, one (1) 8” MTG float retrieval nozzle, one (1) ATG nozzle, and one (1) 72”x 24” inspection hatch.

b. Gauging

The tank’s Enraf ATG is installed through a fully slotted 8” aluminum gauge well. Manual gauging is performed through the MTG. A Varec 2500 tape level gauge provides product level verification from the ground level.

c. Level Alarms

High level alarms (HLA) and high‐high level alarms (HHLA) are mounted on the exterior of the tank and are accessible from a work platform. The tank is not equipped with low level alarms (LLA) and low‐low level alarms (LLLA) independent of the tank gauging system as required by UFC criteria; however, LLA and LLLA nozzles were installed as part of the 2014 upgrade scope.

d. Stairs and Platforms

The tank’s fixed roof and internal ladder are accessible by a spiral staircase mounted on the shell of the tank. The Manual and Automatic Gauging Hatches, Enraf Vito probe nozzle, and roof manway are accessible via a platform extending to the tank center. HLA and HHLA nozzles are accessible via a platform extending from the spiral staircase.

e. Grounding and Bonding

There are four (4) grounding cables connected to the tank bottom.

6. Tank Coating

The external shell was reportedly recoated with epoxy in 2014 and is in very good condition. Dry film thickness readings were taken on the shell and fixed roof.

7. Tank Piping System

Fuel is received through an 8” carbon steel piping connected to a 12” nozzle via a reducing flange and is issued from the tank through an 8” carbon steel pipe to the truck fill-stands. The receipt system was reportedly converted from a commercial line in the past.

8. Fire Protection System

The tank is equipped with an Aqueous Film Forming Foam system with 2 (two) 4” nozzles located at the tank top. The tank is also equipped with an internal floating roof for fire suppression.

9. Secondary Containment

The tank sits within an earthen secondary containment. The secondary containment is lined with an

HDPE liner. The secondary containment is provided with concrete walkways. The containment floor is sloped to allow for drainage away from the tank as required by NFPA‐30. The containment was visually evaluated during the inspection and is of sufficient size to contain a total tank loss. The containment liner has four small breaches that require sealant. It was reported by the facility that a project is being considered to replace the HDPE liner with an all concrete containment dike. In the event of a spill, the containment dike can hold approximately 40,000 BBLs. This value is approximately 130% greater than the nominal capacity of the tank.

C. FINDINGS AND RECOMMENDATIONS

1. SIGNIFICANT FINDINGS per API 653, UFC 3‐460‐01, or AW 78‐24‐27 Standards

There were no significant findings observed during this inspection. The tank underwent major repairs in 2014 addressing significant findings.

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

Mandatory repairs represent items that require immediate attention, in order to prevent imminent risk to system operators, equipment integrity, or the adjacent environment. The tank should remain OOS until these repairs are completed.

a. N/A

OBSERVATION: There are no mandatory repairs required for the tank to remain in service.

3. RECOMMENDED REPAIRS to Fully Comply with API 653, UFC 3‐460‐01, or AW 78‐24‐27 Standards

Recommended repairs represent items that should be addressed in a timely manner in order to prevent future potential risks to system operators, equipment integrity, or the adjacent environment. These items may be required by Federal, State and Local Codes or by Military Criteria.

a. Low and Low-Low Level Alarms

OBSERVATION: The tank is not equipped with independent shell-mounted low-level alarms in the low and low-low level positions.

CODE REFERENCE: UFC 3-460-01 Table 8-1-k: An individual automatic level alarm system, independent of the gauging device or system for each tank. Include high, high-high, low and low-low level alarms.

RECOMMENDATION: Provide the tank with independent shell-mounted low-level and low-low-level alarms in the low and low-low level positions. The nozzles designed for the alarms are disconnected and capped with blind flanges.

b. Threaded Plugs

OBSERVATION: Three threaded plugs were observed in the tank shell along the spiral staircase.

These plugs were reportedly used for fuel quality testing.

CODE REFERENCE: UFC-3-460-01 8-11: Full seal weld all tank attachments to prevent moisture/water from corroding the tank shell and attachments. API-650 1.1.2 Limitations: The first threaded joint on the pipe in a threaded connection to the tank shell. This is considered a potential leak path.

RECOMMENDATION: Seal weld, or remove and provide lap patches for three (3) threaded plugs in the tank shell along the spiral staircase.

c. Crossover Piping for Skin Issue Valve TRV

OBSERVATION: The issue skin valve is not provided with crossover piping or thermal relief.

CODE REFERENCE: UFC-03-460-01 9-3.5: Thermal Relief Valves. The relief valve should discharge to a header which is piped directly to an atmospheric source such as a storage tank or product recovery tank.

RECOMMENDATION: Provide crossover piping and a TRV at the issue skin valve. The Issue skin valve is not equipped with thermal releif.

d. Perimeter Handrail

OBSERVATION: The tank fixed roof is not provided with a perimeter handrail.

CODE REFERENCE: AW 78-24-27 Section 30.01 Notes: Provide guardrail all around perimeter of roof except at stairway top platform

RECOMMENDATION: Provide a handrail around the perimeter of the fixed roof.

4. RECOMMENDED REPAIRS as Part of Regular Maintenance

Recommended repairs represent items that should be addressed in a timely manner in order to prevent future potential risks to system operators, equipment integrity, or the adjacent environment.

a. Grounding Cable Sealant

OBSERVATION: The four (4) grounding cables are not sealed at the ring wall penetrations.

CODE REFERENCE: UFC 3-460-01 2-14.5.5: Spill Containment Systems: The SPCC Plan objectives expressed in 40 CFR Part 112 shall be met with impermeable spill containment systems designed to prevent a spill from leaving the property.

RECOMMENDATION: Provide one (1) linear foot of sealant to the ground cable penetrations to prevent water ingress and further concrete spalling.

b. Concrete Repairs to Containment Dike

OBSERVATION: Approximately 50 ft2 of concrete spalling was observed at the containment dike adjacent to the Product Recovery Tank (PRT).

CODE REFERENCE: UFC 3-460-01 2-14.5.5: Spill Containment Systems: The SPCC Plan objectives expressed in 40 CFR Part 112 shall be met with impermeable spill containment systems designed to prevent a spill from leaving the property.

RECOMMENDATION: Provide concrete repairs to spalled concrete at containment dike, adjacent to the PRT.

c. Containment Breach Repairs

OBSERVATION: Breaches were observed at four (4) locations in the HDPE containment liner.

CODE REFERENCE: UFC 3-460-01 2-14.5.5: Spill Containment Systems: The SPCC Plan objectives expressed in 40 CFR Part 112 shall be met with impermeable spill containment systems designed to prevent a spill from leaving the property.

RECOMMENDATION: Provide one (1) linear foot of liner repair at each of the four (4) breaches in the HDPE containment liner.

d. Containment Breach Repairs

OBSERVATION: Broken conduit was observed protruding the containment dike and is opened to the atmosphere.

CODE REFERENCE: BMP: All openings in the containment should be sealed to prevent potential leaks paths in the event of a spill.

RECOMMENDATION: Provide cap for opened conduit located in the containment dike.

e. Coating Failure at Receipt and Recirculation Piping

OBSERVATION: Approximately 20 ft2 of coating failure was observed on the Receipt and Recirculation piping.

CODE REFERENCE: API-575 Inspection of Above Ground Storage Tanks: 7.2.5 The pipe connections to a tank and bolting at flanged joints should be inspected for external corrosion. Repair will minimize further corrosion and prolong service life.

RECOMMENDATION: Provide surface preparation and coating repair to approximately 20 ft2 of failed coating on the Receipt and Recirculation piping.

f. Concrete Spalling and Sealant Failure at Chime to Ring Wall Interface

OBSERVATION: Approximately 270 linear feet of cracking and sealant failure was observed at the ring wall to chime interface.

CODE REFERENCE: UFC 3-460-01 2-14.5.5: Spill Containment Systems: The SPCC Plan objectives expressed in 40 CFR Part 112 shall be met with impermeable spill containment systems designed to prevent a spill from leaving the property.

RECOMMENDATION: Provide cracking repair for approximately 270 linear feet around the chime to ring wall interface with flexible, UV resistant and fuel resistant sealant.

D. INSPECTION INTERVALS

Intervals between tank inspections (both internal and external) should be determined by the tank service history, corrosion rates, and regulatory requirements. UFC 3-460-03 provides maximum internal inspection intervals for military facilities. UFC guidelines should be used as they are more stringent. Listed below are the recommended inspection intervals:

1. Routine In-service Inspection

Facility personnel shall perform a visual inspection of the tank exterior surfaces and associated piping.

Gross defects, leaks, shell distortions, signs of settlement, and corrosion should all be monitored along with the foundation condition (including tank chime-to-foundation interface), coating, and appurtenances.

Interval: Monthly

2. External Inspection

An API certified inspector shall perform this inspection every five (5) years or RCA/4N years (where RCA is the difference between the measured shell thickness and the minimum required thickness and N is the shell corrosion rate) whichever is less. This inspection includes inspection requirements of the routine in-service inspection as well as a visual inspection of the tank grounding system (shunts and cables) for damage.

Interval: Five (5) years; December 2022

3. Ultrasonic Thickness Inspection

An external UT inspection of the tank shell and roof (if applicable) shall be performed by an API certified inspector every fifteen (15) years or RCA/4N, whichever is less. The UT inspection may be performed in conjunction with the external inspection.

Interval: Fifteen (15) years; December 2032

4. Internal Inspection

An API certified inspector shall perform the internal inspection every 20 years or ½ remaining life of the tank bottom, whichever is less. This inspection includes a visual inspection of the tank interior surfaces and associated piping and an evaluation of the tank bottom via NDT methods. Since UFC requirements are more stringent, the internal inspection shall be performed every ten (10) years.

Interval: Twenty (20) years; April 2033 (Assumed. No previous inspection report was provided to verify a twenty (20) year inspection interval was recommended by the previous inspector.)

API 653 In-Service Inspection Report Little Rock AFB, Arkansas

APPENDIX A: ENGINEERING CALCULATIONS AND DRAWINGS

API-653 APPENDIX B SHELL SETTLEMENT EVALUATION

(para. B.2.2.4)

Report No Client Inspector Vessel Date

Little Rock Tank #2 USACE, Omaha Bart Bartlett (POND) Tank #2 Facility 1344 01/09/2018

Base Elev Max Elev Elev

FT 1.470 1.542 0.072 R^2 = 0.104

IN 17.640 18.504 0.864

Report No.: Little Rock Tank #2

D H Roof Type L 1st Crs Plt Spec Y E

85 38.8 F 26.70 Unknown 30000 29000000

Where:

D = Tank Diameter, in ft H = Tank Height, in ft Roof Type: F = fixed, O = Open L = Arc length between measurement points, in ft (32' max) (greatest dist. allowed based on even # of points) Y = Yield strength of shell 1st course , in pounds per Sq.Inch (psi) E - Young's modulus, in pounds per Sq.Inch (psi)

= Angle theta at elevation point, in degrees PE = Predicted elevation, in ft Ui = Measured out-of-plane settlement in relation to a cosine curve, in ft Si = Deflection, in ft, (out-of-plane distortion) Smax = Maximum allowed deflection, in ft, (out-of-plane distortion)

Smax =((L^2*Y*11)/2*(E*H)) = 0.105

Point Elevation PE Ui Si Results

1 1.520 0 1.470 0.050 0.014 SAT

2 1.483 36 1.477 0.006 -0.021 SAT

3 1.500 72 1.495 0.005 0.026 SAT

4 1.470 108 1.517 -0.047 -0.024 SAT

5 1.483 144 1.535 -0.052 0.005 SAT

6 1.475 180 1.542 -0.067 -0.032 SAT

7 1.517 216 1.535 -0.018 0.024 SAT

8 1.500 252 1.517 -0.017 -0.019 SAT

9 1.517 288 1.495 0.022 -0.002 SAT

10 1.542 324 1.477 0.065 0.029 SAT

CroninJ Typewritten Text The optimum cosine used in the shell settlement evaluation per API 653 paragraph B.2.2.4 is invalid as R^2 is less than 0.9. As an alternative, the evaluation provided in API 653 paragraph B.2.2.5 was used in determining shell settlement.

(para. B.2.2.5) Report No. Client Inspector Vessel Date

Little Rock Tank #2 USACE, Omaha Bart Bartlett (POND) Tank #2 Facility 1344 1/9/2018

Base Elev Max Elev Elev

FT 1.470 1.542 0.072

IN 17.640 18.504 0.864

Report No.: Little Rock Tank #2

D H Roof Type 1st Crs Plt Spec Y E K

85 38.8 F Unknown 30000 29000000 3.900

Where:

D = Tank Diameter, in ft H = Tank Height, in ft Roof Type: F = fixed, O = Open Y = Yield strength of shell 1st course , in pounds per Sq.Inch (psi) E - Young's modulus, in pounds per Sq.Inch (psi) K = factor from table in B.3.2.2 (API-653 App. B) PE2 = Predicted elevation (for secondary evaluation), in ft Sarc = the effective settlement arc length, see B.2.2.5.1, in ft Si = out-of-plane settlement, in inch Smax = Maximum allowed out-of-plane settlement, in inch (min(K*Sarc*(D/H)*(Y/E), 4.0)

Point Elevation PE2 Sarc Si Smax Results

1 1.520 0 1.528 80.1 0.096 0.708 SAT

2 1.483 36 1.514 80.1 0.372 0.708 SAT

3 1.500 72 1.500 106.8 0.000 0.944 SAT

4 1.470 108 1.504 106.8 0.411 0.944 SAT

5 1.483 144 1.509 106.8 0.306 0.944 SAT

6 1.475 180 1.513 106.8 0.453 0.944 SAT

7 1.517 216 1.517 80.1 0.000 0.708 SAT

8 1.500 252 1.525 80.1 0.304 0.708 SAT

9 1.517 288 1.534 80.1 0.200 0.708 SAT

10 1.542 324 1.542 80.1 0.000 0.708 SAT

API 653 In-Service Inspection Report Little Rock AFB, Arkansas

Table 1 – Tank Evaluation Measurements

Point Arc Length

(ft.)

Tank

Chime

1 0.00 18.20

2 26.69 17.80

3 53.38 18.00

4 80.07 17.60

5 106.76 17.50

6 133.45 17.70

7 160.14 18.20

8 186.83 18.00

9 213.52 18.20

10 240.21 18.50

IP

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

1-5

1-7 1-8 1-91-10

1-6

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

2-6 2-7 2-82-9

3-1 3-2 3-3 3-4 3-5 3-6 3-7 3-83-9

4-1

4-2 4-3 4-4 4-5 4-6 4-7 4-84-9

5-1 5-2 5-3 5-4 5-5 5-6 5-7 5-85-9

6'-10"

8'-0"

8'-0"

8'-0"

8'-0"

1'-2"

NOTES:

1. REFER TO TABLE 2, "SHELL ULTRASONIC THICKNESS READINGS", IN APPENDIX A FOR THE

INDIVIDUAL SHELL PLATE UTT READINGS.

2. REFER TO TABLE 3, "NOZZLES AND APPURTENANCES", IN APPENDIX A FOR NOZZLE DATA.

LEGEND:

- INSERT PLATE

S H

E L

L

R

O L

L O

U T

GROUNDING CABLE

(TYP. 4)

N2

N3

MW1

MW2

N11

N6

N7

N8

1" TELL-TALE

(TYP.3)

OVERFLOW VENT

(TYP.4)

N1 N5

N4

N9

N10

VAREC

FLOAT GAUGE

SHELL ATTACHMENT

(TYP.)

THREADED

PLUGS (TYP.3)

C O

N T

R A

C T

N

O

F I L

E

N

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

4 5

A

B

M A

R K

A P

P R

D A

T E

F I L

E

N

U M

B E

R

S I Z

E

S U

B M

I T

T E

D

B

Y

P L

S

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

E R

SHEET

IDENTIFICATION

D A

T E

A P

P R

SHEET OF

N T

S

N A

W F

F

X

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

K B

B

K B

B

N A

TANK INFORMATION

TANK NO. (FACILITY NO.): 2 (1344)

MANUFACTURER: CHICAGO BRIDGE & IRON COMPANY

YEAR BUILT: 1954

TANK DIAMETER: 85'-0"

TANK HEIGHT: 38'-10"

MAX FILL CAPACITY: 29,062 BBLS

PRODUCT: JET-A (F-24)

PRODUCT SPECIFIC GRAVITY: .85

GPS COORDINATES: N 34° 54' 18.77"

W 92° 7' 47.11"

U S

A C

E

O M

A H

A

D

I S

T R

I C

T

J A

C K

S O

N V

I L

L E

A

R K

A N

S A

S

L I T

T L

E

R

O C

K

A

F B

T A

K

L

A Y

O U

T

N A

W F

D

J G

C

WIND GIRDER

SPIRAL

STAIRCASE

(TYP.)

Table 2: Shell Ultrasonic Thickness Readings

Roof Circumferential Weld C6

Shell

Course

Plate 5-1 Plate 5-2 Plate 5-3 Plate 5-4 Plate 5-5 Plate 5-6 Plate 5-7 Plate 5-8 Plate 5-9

.260 .265 .263

.263 .263 .266 N/A N/A N/A N/A N/A N/A N/A N/A

.264 .265 .266

Avg. .264

Circumferential Weld C5

Shell

Course

Plate 4-1 Plate 4-2 Plate 4-3 Plate 4-4 Plate 4-5 Plate 4-6 Plate 4-7 Plate 4-8 Plate 4-9

.252 .256 .258

N/A N/A N/A N/A N/A N/A N/A .253 .257 .260

.256 .259 .256

Avg. .256

Circumferential Weld C4

Shell

Course

Plate 3-1 Plate 3-2 Plate 3-3 Plate 3-4 Plate 3-5 Plate 3-6 Plate 3-7 Plate 3-8 Plate 3-9

.299 .307 .305

N/A N/A N/A N/A N/A N/A N/A N/A .299 .308 .303

.304 .308 .306

Avg. .304

Circumferential Weld C3

Shell

Course

Plate 2-1 Plate 2-2 Plate 2-3 Plate 2-4 Plate 2-5 Plate 2-6 Plate 2-7 Plate 2-8 Plate 2-9

.423 .422 .419

N/A N/A N/A N/A N/A N/A N/A .421 .418 .420 N/A

.421 .419 .417

Avg. .420

Circumferential Weld C2

Shell Course

Plate 1-1 Plate 1-2 Plate 1-3 Plate 1-4 Plate 1-5 Plate 1-6 Plate 1-7 Plate 1-8 Plate 1-9

.515 .519 .512 .505 .505 .496 .505 .507 .503 .516 .509 .505 .504 .507 .505 .507 .504 .506 .504 .503 .501 .502 .505 .499 .501 .504 .500

.525 .522 .521 .502 .505 .494 .506 .508 .509 .521 .509 .503 .503 .508 .506 .504 .506 .507 .510 .504 .503 .493 .504 .494 .505 .507 .497

.525 .518 .521 .503 .502 .495 .505 .510 .507 .521 .510 .504 .503 .506 .505 .507 .508 .506 .508 .506 .502 .506 .507 .497 .506 .505 .497

Avg. .520 .501 .507 .511 .505 .506 .505 .501 .502

Circumferential Weld C1

Thickness Represented in inches.

Average Shell Course 1 .506 Average Shell Course 2 .420 Average Shell Course 3 .304 Average Shell Course 4 .256 Average Shell Course 5 .264 Refer to Drawing A-1 in Appendix for plate numbers.

SHELL MINIMUM THICKNESS CALCULATIONS

Tank Shell Minimum Thickness and Remaining Life Calculations Date 01/09/2018

File No. Report No. Client Tank No. Temp. (degF) Initials

1876 Little Rock Tank #2 USACE, Omaha Tank #2 Facility

Bart Bart tmin = 2.6(H-1)DG

SE

Where:

H = The height above the bottom of the course of study to the maximum liquid level height of the product, in ft. For corroded or pitted areas, H = the height from the bottom of the corroded or pitted area to the maximum liquid level height of the product, in ft.

tmin = The calculated minimum acceptable shell thickness, in inch (cannot be less than

0.10 inch for any course). The minimum acceptable shell thickness allowed by API-653 and STI-SP001 for tank size, in inch .

D = Nominal diameter of tank, in ft.

G = Highest specific gravity of the contents (including test water if tank will, or may, be tested in the future).

S = Maximum allowable stress, in psi. For welded tanks; use the smaller of 0.80Y of 0.429T for bottom and second course or the smaller of 0.88Y or 0.472T for all other courses. For riveted tanks; S = 21000 psi. For STI Tank Inspections S = 26000 psi (E = 1)

Y = Specified minimum yield strength of the plate, in psi; use 30000 psi if not known (N/A for riveted tanks).

T = The smaller of the specified minimum tensile strength of the plate or 80000 psi; use 55000 psi if not known (N/A for riveted tanks).

E = Original joint efficiency for the tank. For welded tanks; use API-653, Table 2-1 ; use E =

1.0 when evaluating the retirement thickness in a corroded plate, when away from welds or joints by at least the greater of one inch or twice the plate thickness. For riveted tanks; use E = 1.0 for shell plates greater than 1 inch away from rivets; use the value of E from API- 653 Table 2-1 when within 1 inch of rivets. For STI Tank Inspections E = 1 where S = 26000 psi.

D (ft) 85 G 0.82 E 0.70 Fill Height (ft) 29.6

Material Crs H (ft) H (ft) S (psi) tmin (inch) Course 1 Unknown 8 29.6 23600 0.314 Course 2 Unknown 8 21.6 23600 0.226 Course 3 Unknown 8 13.6 26000 0.125 Course 4 Unknown 8 5.6 26000 0.100 Course 5 Unknown 8 -2.4 26000 0.100

SHELL REMAINING LIFE CALCULATIONS

Tank Shell Minimum Thickness and Remaining Life Calculations Date 01/09/2018

File No. Report No. Client Tank No. Temp. (degF) Initials

1876 Little Rock Tank #2 USACE, Omaha Tank #2 Facility

Bart Bart

Ca = tact-tmin = Remaining Corrosion Allowance (inch) Cr = tprev-tact / Y = Corrosion Rate (inch/Yr) RL = Ca / Cr = Remaining Life (year)

Y = 63 = Tank age (year)

Where:

Ca = Remaining corrosion allowance of the shell course under consideration, in inch.

Cr = Corrosion rate of the shell course under consideration, in inch per year.

FHc = Calculated fill Height = (SEtact/2.6DG+1) + (product height below course of interest), in ft.

tact = Minimum thickness measurement of the shell course under consideration, as recorded at the time of inspection, in inch.

tmin = minimum required thickness of shell course, at the maximum allowable fill height, in inch.

tprev = previous thickness measurement of shell course under consideration, as recorded at last inspection or nominal thickness if no previous thickness measurements, in inch.

RL = Estimated remaining life of the shell course under consideration, in year.

Y = Time span between thickness readings or age of the tank if nominal thickness is used for tprev, in year.

tprev tact tmin Ca Cr RL FHc Course 1 0.500 0.506 0.314 0.192 0.0000 >40 47.13 Course 2 0.438 0.420 0.226 0.194 0.0003 679 47.29 Course 3 0.375 0.304 0.125 0.179 0.0011 158 47.53 Course 4 0.250 0.256 0.100 0.156 0.0000 >40 50.71 Course 5 0.250 0.264 0.100 0.164 0.0000 >40 59.51

C

C

C

C

P

P

P

P

P

P

P

P

C

P

C

C

P

P

P

P

P

38 39 40

41 42 43

44 45 46 47

48 49 50 51

54 5552 53

57 5856

59 60

P

C

P

P

P

P

C O

N T

R A

F I L

E

N

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

4 5

A

B

M A

R K

A P

P R

D A

T E

F I L

E

N

U M

B E

R

S I Z

E

S U

B M

I T

T E

D

B

Y

P L

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

N T

S

N A

W F

F

P r k w a y

L a n e

S u i t

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

K B

B

K B

B

N A

TANK INFORMATION

TANK NO. (FACILITY NO.): 2 (1344)

MANUFACTURER: CHICAGO BRIDGE & IRON COMPANY

YEAR BUILT: 1954

TANK DIAMETER: 85'-0"

TANK HEIGHT: 38'-10"

MAX FILL CAPACITY: 29,062 BBLS

PRODUCT: JET-A (F-24)

PRODUCT SPECIFIC GRAVITY: .85

GPS COORDINATES: N 34° 54' 18.77"

W 92° 7' 47.11"

U S

A C

E

O M

A H

A

D

I S

T R

I C

T

J A

C K

S O

N V

I L

L E

A

R K

A N

S A

S

L I T

T L

E

R

O C

K

A

F B

T A

Y

O U

T

N A

W F

D

J G

C

F I X

D

O

F

NOTES:

1. REFER TO TABLE 3, "NOZZLES AND APPURTENANCES" IN

APPENDIX A FOR NOZZLE DATA.

2" PLUG

(TYP. 18)

ANTI-ROTATION

CABLE MOUNT (TYP.3)

PLATFORM SUPPORTS

N

N18

2" CAP

(TYP. 8)

PERIMETER ROOF

VENT (TYP.4)

VAREC

FLOAT GAUGE

0.198"

0.200"

0.201"

0.197"

0.195"

0.190"

0.194"

0.193"

0.190"

0.195"

0.180"

0.175"

0.183"

0.179"

0.177"

0.190"

0.191"

0.194"

0.193"

0.195"

0.186"

0.193"

0.185"

0.190"

0.184"

0.188"

0.188"

0.189"

0.187"

0.192"

LEGEND:

- UTT READING IN INCHES

0.XXX"

N15

N19

N17

N16

N13

N12

LAP PATCH

AST ATMOSPHERIC STORAGE TANK FIXED ROOF EVALUATION

MINIMUM THICKNESS, REMAINING LIFE, PRESSURE CALCULATIONS

Date 01/09/2018

File No Report No Client Inspector Tank No Temp(degF)

1030 Little Rock Tank #2 USACE, Omaha Bart Bartlett (POND) Tank #2 Facility

Where;

Ca = remaining corrosion allowance of the tank component under consideration, in inch (t act - t min).

Cr = corrosion rate of the tank component under consideration, in inch per year (t prev - t act / Y).

oz = unit of measurement, (weight, in ounces, per square inch), (16 oz per pound) psi = unit of measurement, (weight, in pounds, per square inch) RL = estimated remaining life of the tank component under consideration, in year (Ca / Cr).

t act = actual thickness measurement of the tank component under consideration, as recorded at the time of inspection, in inch.

t min = minimum required thickness of tank component, at the design MAWP at the design temperature (200 degF for atm AST's), in inch (greater of psi/wt or 0.090").

t nom = design nominal thickness of tank component under consideration, in inch.

t prev = previous thickness measurement of the tank component under consideration, as recorded at last inspection or nominal thickness if no previous thickness measurements, in inch.

t yn = thickness of the tank component under consideration at the next inspection at twice the calculated corrosion rate, in inch (t act - (2*Cr*Yn).

wt = weight of plate per cubic inch.

wc = unit of measurement, (height, in inch, of water column bearing on 1 Sq.Inch area), (27.7 wc per pound) Y = time span between thickness readings or age of the tank component if tnom is used for tprev, in year.

Yn = estimated time span to next inspection of the tank component under consideration, in year.

ROOF PLATES - REMAINING LIFE

Y t prev (inch) t act (inch) t min (inch) Cr (inch/Yr) Ca (inch) RL

63 0.185 0.19 0.090 0.00000 0.100 >20

Table 3: Nozzles and Appurtenances

Nozzle

Nozzle Size

(Diameter or

Width/Height)

Repad

Shape

RepadSize

(W X H)

Repad

Thickness

Nozzle

Thickness H1 H2

Nozzle Location

(Measured circumferentially from Manway A)

Notes

MW1 36"x21" C 68"x45" 0.505 0.496 30" 7" 0' Manway

N1 4" C - - - - - 96'-0" AFFF

MW2 36" C 92"x76" 0.511 0.362 41" 1 3/4" 110'-11" Manway

N2 12" C 22"x26" 0.509 0.484 17" 3 1/2" 175'-6" Receipt

N3 8" C 22"x18" 0.512 0.506 13" 3 1/2" 183'-7" Recirculation/Issue

N4 4" C 14"x12" 0.490 0.296 9" 3 1/2" 206'-2" Low Suction Nozzle

N5 4" C - - - - - 225'-9" AFFF

N6 2" - - - 0.137 3'-3" - 239'-6" HLA

N7 2" - - - 0.139 7'-4" - 239'-6" HHLA

N8 1" - - - 0.170 4'-10" - 239'-6" LLLA Blind Flange

N9 1" - - - 0.176 1'-9 1/2" - 239'-6" LLA Blind Flange

N10 8" C 24"x18" 0.510 0.479 12" 2 1/2" 243'-4" Main Suction

N11 2" - - - 0.198 7" - 251'-9" Water Draw

N12 8" B 16" - - Fixed Roof Enraf ATG

N13 8" B 16" - - Fixed Roof MTG

N14 72"x24" F - - 0.375 Fixed Roof IFR Hatch

N15 6" B 10" 0.476 0.246 Fixed Roof VITO Probe

N16 6" - - - 0.432 Fixed Roof Vent

N17 6" - - - 0.419 Fixed Roof Vent

N18 24" - - - 0.210 Fixed Roof Manway

N19 28"x28" - - - 0.213 Fixed Roof Gauging Hatch w/ Internal access Ladder

Thicknesses are represented in inches.

H1 = Centerline of pipe to the tank chime.

H2 = Lower weld toe of reinforcement pad to the tank chime.

Repad Shapes:

Table 4: Dry Film Coating Thickness

External Shell Coating Thickness

Average Standard Deviation Number of Readings Minimum Maximum

11.570 2.323 17 8.601 16.330

Roof Coating Thickness

Average Standard Deviation Number of Readings Minimum Maximum

10.790 3.914 14 4.561 11.680

Thickness measurements are represented in mils.

Out-of-Roundness Evaluation

Equipment

TOPCON Laser Scanner – M/N GLS-2000

Technique

The shell roundness was evaluated using the laser scanning surveying techniques. PointSense Plant was used to determine deformations within the tank shell. Analysis consisted of tank shell deviations from the best fit cylinder at 1’-0” intervals in the y-direction, and 1’-

15” intervals in the x-direction beginning at the shell-to-bottom weld below Manway 1.

Refer to Drawing 03-07, “Shell Deformation Measurements” for a gradient map of deformation measurements, and Drawing 08-12, “API Tolerance Analysis” for results for API analysis. All deformation measurements provided in drawings are represented in feet.

Results

By API 650, an OOR survey is performed to determine if distortions in the shell would affect the functionality of the internal floating roof (IFR). Results of the survey showed deformations within the shell that exceeded tolerances specified by API 650 7.5.3. Maximum allowable OOR tolerance of the radius is not to exceed +/-1 ½”. It should be noted this tolerance is specific to tanks of new construction.

The maximum deformation was found to 0.317 feet (3.804 inches) outward and 0.181 feet (2.172 inches) inward. While 3.804” is very close to the allowable 4” gap, it should be noted this value fell well below the lowest possible height of the IFR, at the shell-to-bottom weld. Excluding the first 3 feet of the analysis, the maximum deformation is 0.192 feet (2.299 inches) well within the acceptable tolerances. Based on assumed shell-to-IFR gap (4” to 6”), an IFR will operate in the tank as intended.

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

4 5

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

SHEET

IDENTIFICATION

D A

T E

A P

P R

SHEET OF

N T

S

N A

W

F

F

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

K B

B

K B

B

N A

TANK INFORMATION

TANK NO. (FACILITY NO.): 2 (1344)

MANUFACTURER: CHICAGO BRIDGE & IRON COMPANY

YEAR BUILT: 1954

TANK DIAMETER: 85'-0"

TANK HEIGHT: 38'-10"

MAX FILL CAPACITY: 29,062 BBLS

PRODUCT: JET-A (F-24)

PRODUCT SPECIFIC GRAVITY: .85

GPS COORDINATES: N 34° 54' 18.77"

W 92° 7' 47.11"

U S

A C

E

O M

A H

A

D

I S

T R

I C

T

J A

C K

S O

N V

I L L E

A

R K

A N

S A

S

L I T

T

C

K

A

F B

A P

I

T

O

F R

O U

N D

N E

R

V E

Y

N A

W

F

D

J G

C

COLOR LEGEND:

0.181' 0.001' 0.317'

INWARD

DEFLECTION

OUTWARD

DEFLECTION

S H

E L

L

D

E F

O R

M A

T I O

N

M

E A

S U

R E

M E

N T

S

T A

F

A C

I L

I T

Y

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

4 5

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

N T

S

N A

W

F

F

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

K B

B

K B

B

N A

TANK INFORMATION

TANK NO. (FACILITY NO.): 2 (1344)

MANUFACTURER: CHICAGO BRIDGE & IRON COMPANY

YEAR BUILT: 1954

TANK DIAMETER: 85'-0"

TANK HEIGHT: 38'-10"

MAX FILL CAPACITY: 29,062 BBLS

PRODUCT: JET-A (F-24)

PRODUCT SPECIFIC GRAVITY: .85

GPS COORDINATES: N 34° 54' 18.77"

W 92° 7' 47.11"

U S

A C

E

O M

A H

A

D

I S

T R

I C

T

J A

C K

S O

N V

I L L E

A

R K

A N

S A

S

L I T

T

C

K

A

F B

A P

I

T

O

F R

O U

N D

N E

R

V E

Y

N A

W

F

D

J G

C

COLOR LEGEND:

0.181' 0.001' 0.317'

INWARD

DEFLECTION

OUTWARD

DEFLECTION

S H

E L

L

D

E F

O R

M A

T I O

N

M

E A

S U

R E

M E

N T

S

T A

A C

I L

I T

Y

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

4 5

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

N T

S

N A

W

F

F

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

K B

B

K B

B

N A

TANK INFORMATION

TANK NO. (FACILITY NO.): 2 (1344)

MANUFACTURER: CHICAGO BRIDGE & IRON COMPANY

YEAR BUILT: 1954

TANK DIAMETER: 85'-0"

TANK HEIGHT: 38'-10"

MAX FILL CAPACITY: 29,062 BBLS

PRODUCT: JET-A (F-24)

PRODUCT SPECIFIC GRAVITY: .85

GPS COORDINATES: N 34° 54' 18.77"

W 92° 7' 47.11"

U S

A C

E

O M

A H

A

D

I S

T R

I C

T

J A

C K

S O

N V

I L L E

A

R K

A N

S A

S

L I T

T

C

K

A

F B

A P

I

T

O

F R

O U

N D

N E

R

V E

Y

N A

W

F

D

J G

C

COLOR LEGEND:

0.181' 0.001' 0.317'

INWARD

DEFLECTION

OUTWARD

DEFLECTION

S H

E L

L

D

E F

O R

M A

T I O

N

M

E A

S U

R E

M E

N T

S

T A

A C

I L

I T

Y

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

4 5

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

N T

S

N A

W

F

F

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

K B

B

K B

B

N A

TANK INFORMATION

TANK NO. (FACILITY NO.): 2 (1344)

MANUFACTURER: CHICAGO BRIDGE & IRON COMPANY

YEAR BUILT: 1954

TANK DIAMETER: 85'-0"

TANK HEIGHT: 38'-10"

MAX FILL CAPACITY: 29,062 BBLS

PRODUCT: JET-A (F-24)

PRODUCT SPECIFIC GRAVITY: .85

GPS COORDINATES: N 34° 54' 18.77"

W 92° 7' 47.11"

U S

A C

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O M

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C

COLOR LEGEND:

0.181' 0.001' 0.317'

INWARD

DEFLECTION

OUTWARD

DEFLECTION

S H

E L

L

D

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O R

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S U

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N E

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D E

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N

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2 3

C

4 5

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B

M A

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A P

P R

D A

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B M

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D

B

Y

P L O

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S

C A

L E

P

L O

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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

N T

S

N A

W

F

F

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

K B

B

K B

B

N A

TANK INFORMATION

TANK NO. (FACILITY NO.): 2 (1344)

MANUFACTURER: CHICAGO BRIDGE & IRON COMPANY

YEAR BUILT: 1954

TANK DIAMETER: 85'-0"

TANK HEIGHT: 38'-10"

MAX FILL CAPACITY: 29,062 BBLS

PRODUCT: JET-A (F-24)

PRODUCT SPECIFIC GRAVITY: .85

GPS COORDINATES: N 34° 54' 18.77"

W 92° 7' 47.11"

U S

A C

E

O M

A H

A

D

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J A

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I L L E

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L I T

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A

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N E

R

V E

Y

N A

W

F

D

J G

C

COLOR LEGEND:

0.181' 0.001' 0.317'

INWARD

DEFLECTION

OUTWARD

DEFLECTION

S H

E L

L

D

E F

O R

M A

T I O

N

M

E A

S U

R E

M E

N T

S

T A

A C

I L

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N T

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F I

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E

D W

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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

4 5

A

B

M A

R K

A P

P R

D A

T E

F I

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B E

R

S I Z

E

S U

B M

I T

T E

D

B

Y

P L O

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S

C A

L E

P

L O

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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

N T

S

N A

W

F

F

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

K B

B

K B

B

N A

TANK INFORMATION

TANK NO. (FACILITY NO.): 2 (1344)

MANUFACTURER: CHICAGO BRIDGE & IRON COMPANY

YEAR BUILT: 1954

TANK DIAMETER: 85'-0"

TANK HEIGHT: 38'-10"

MAX FILL CAPACITY: 29,062 BBLS

PRODUCT: JET-A (F-24)

PRODUCT SPECIFIC GRAVITY: .85

GPS COORDINATES: N 34° 54' 18.77"

W 92° 7' 47.11"

U S

A C

E

O M

A H

A

D

I S

T R

I C

T

J A

C K

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N V

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L I T

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API TOLERANCE:

- PASSED

- FAILED

A P

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P

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D E

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R I P

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L I V

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O

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SHEET

IDENTIFICATION

D A

T E

A P

P R

SHEET OF

N T

S

N A

W

F

F

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

K B

B

K B

B

N A

TANK INFORMATION

TANK NO. (FACILITY NO.): 2 (1344)

MANUFACTURER: CHICAGO BRIDGE & IRON COMPANY

YEAR BUILT: 1954

TANK DIAMETER: 85'-0"

TANK HEIGHT: 38'-10"

MAX FILL CAPACITY: 29,062 BBLS

PRODUCT: JET-A (F-24)

PRODUCT SPECIFIC GRAVITY: .85

GPS COORDINATES: N 34° 54' 18.77"

W 92° 7' 47.11"

U S

A C

E

O M

A H

A

D

I S

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T

J A

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N V

I L L E

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L I T

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A

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N D

N E

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V E

Y

N A

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F

D

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API TOLERANCE:

- PASSED

- FAILED

A P

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A N

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S I S

T A

A C

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Y

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N

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Y

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Y

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N E

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B

Y

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2 3

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4 5

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M A

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M A

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SHEET

IDENTIFICATION

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T E

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P R

SHEET OF

N T

S

N A

W

F

F

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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

K B

B

K B

B

N A

TANK INFORMATION

TANK NO. (FACILITY NO.): 2 (1344)

MANUFACTURER: CHICAGO BRIDGE & IRON COMPANY

YEAR BUILT: 1954

TANK DIAMETER: 85'-0"

TANK HEIGHT: 38'-10"

MAX FILL CAPACITY: 29,062 BBLS

PRODUCT: JET-A (F-24)

PRODUCT SPECIFIC GRAVITY: .85

GPS COORDINATES: N 34° 54' 18.77"

W 92° 7' 47.11"

U S

A C

E

O M

A H

A

D

I S

T R

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T

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I L L E

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A

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API TOLERANCE:

- PASSED

- FAILED

A P

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T A

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Y

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L I V

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O

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SHEET

IDENTIFICATION

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T E

A P

P R

SHEET OF

N T

S

N A

W

F

F

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

K B

B

K B

B

N A

TANK INFORMATION

TANK NO. (FACILITY NO.): 2 (1344)

MANUFACTURER: CHICAGO BRIDGE & IRON COMPANY

YEAR BUILT: 1954

TANK DIAMETER: 85'-0"

TANK HEIGHT: 38'-10"

MAX FILL CAPACITY: 29,062 BBLS

PRODUCT: JET-A (F-24)

PRODUCT SPECIFIC GRAVITY: .85

GPS COORDINATES: N 34° 54' 18.77"

W 92° 7' 47.11"

U S

A C

E

O M

A H

A

D

I S

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N V

I L L E

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L I T

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A

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N D

N E

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V E

Y

N A

W

F

D

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C

API TOLERANCE:

- PASSED

- FAILED

A P

I

T

O L

E R

A N

A

L Y

S I S

T A

A C

I L

I T

Y

N T

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F I

M

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N

B

Y

C K

D

B

Y

D E

S I G

N E

D

B

Y

D E

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R I P

T I O

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C

4 5

A

B

M A

R K

A P

P R

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T E

F I

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B E

R

S I Z

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B M

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P

L O

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M A

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SHEET

IDENTIFICATION

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T E

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P R

SHEET OF

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S

N A

W

F

F

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

K B

B

K B

B

N A

TANK INFORMATION

TANK NO. (FACILITY NO.): 2 (1344)

MANUFACTURER: CHICAGO BRIDGE & IRON COMPANY

YEAR BUILT: 1954

TANK DIAMETER: 85'-0"

TANK HEIGHT: 38'-10"

MAX FILL CAPACITY: 29,062 BBLS

PRODUCT: JET-A (F-24)

PRODUCT SPECIFIC GRAVITY: .85

GPS COORDINATES: N 34° 54' 18.77"

W 92° 7' 47.11"

U S

A C

E

O M

A H

A

D

I S

T R

I C

T

J A

C K

S O

N V

I L L E

A

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A N

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S

L I T

T

C

K

A

F B

A P

I

T

O

F R

O U

N D

N E

R

V E

Y

N A

W

F

D

J G

C

API TOLERANCE:

- PASSED

- FAILED

A P

I

T

O L

E R

A N

A

L Y

S I S

T A

A C

I L

I T

Y

APPENDIX B: API 653 CHECKLISTS FOR TANK INSPECTIONS

Tank In‐Service Inspection Checklist

Item Completed

X

B.1.1 Foundation

Measure foundation levelness and bottom elevations (see Annex B for extent of measurements). X

B.1.1.1 Concrete Ring

Inspect for broken concrete, spalling, and cracks, particularly under backup bars used in welding butt‐ welded annular rings under the shell.

b Inspect drain openings in ring, back of waterdraw basins and top surface of ring for indications of bottom leakage.

X c Inspect for cavities under foundation and vegetation against bottom of tank. X d Check that runoff rainwater from the shell drains away from tank. X e Check for settlement around perimeter of tank. X

B.1.1.2 Asphalt

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

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

B.1.1.3 Oiled Dirt or Sand

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

X

B.1.1.4 Rock

Presence of crushed rock under the steel bottom usually results in severe underside corrosion. Make a note to do additional bottom plate examination (ultrasonic, hammer testing, or turning of coupons) when the tank is OOS.

X

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

B.1.1.6 Housekeeping

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

B.1.1.7 Cathodic Protection

Review cathodic protection potential readings. N/A

B.1.2 Shells

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

B.1.2.2 Internal (Floating Roof Tank)

Visually inspect for grooving, corrosion, pitting, and coating failures. N/A

B.1.2.3 Riveted Shell Inspection a Inspect external surface for rivet and seam leaks. N/A b Locate leaks by sketch or photo (location will be lost when shell is abrasive cleaned for painting). N/A c Inspect rivets for corrosion loss and wear. N/A

Tank In‐Service Inspection Checklist Continued d Inspect vertical seams to see if they have been…