Attachment J.4 Fac 88045 (Tank 310)-FINAL-2021.pdf

API 653 In-Service Inspection Report Ft Hood / Killeen, TX

Facility ID: 88045/Tank ID: 310

Prepared for:

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

(USACE POL-MCX)

07/02/2021

Inspection Report Prepared by:

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

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Table of Contents

ACRONYMS AND ABBREVIATIONS

GENERAL SUMMARY

INSPECTION DATE

STATE REGULATIONS

PREVIOUS INSPECTION DATES

RECOMMENDED FUTURE INSPECTION DATES (CALCULATIONS ARE PROVIDED)

GENERAL TANK INFORMATION

A. GENERAL PROJECT INFORMATION

1. API 653 Inspection

2. Site Information

B. TANK INSPECTION COMMENTS

1. Tank Construction / Shell

2. Tank Foundation

3. Tank Shell

4. Tank Appurtenances

5. Tank Coating

6. Tank Piping System

7. Fire Protection System

8. Secondary Containment

FINDINGS AND RECOMMENDATIONS

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

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

3. RECOMMENDED REPAIRS as Part of Regular Maintenance

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

APPENDIX A: ENGINEERING CALCULATIONS AND DRAWINGS SHELL SETTLEMENT SURVEY

SHELL SETTLEMENT SURVEY

SHELL THICKNESS CALCULATION

SHELL UT MEASUREMENTS

ROOF UT MEASUREMENTS

SHELL NOZZLE / REPAD UT MEASUREMENTS

CRITICAL ZONE SHELL THICKNESS

SHELL DROP UT MEASUREMENTS

APPENDIX B: 3-D DOCUMENTATION AND ANALYSIS

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ISOLATED SHELL DISTORTION

APPENDIX C: TANK DRAWINGS

APPENDIX D: API 653 CHECKLISTS FOR TANK INSPECTIONS

APPENDIX E: PHOTOGRAPHS

ACRONYMS AND ABBREVIATIONS

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

GENERAL SUMMARY

An API 653 In-Service inspection of Tank # 310 was completed on July 2, 2021 to evaluate the tank’s integrity, collect data, and establish a database for future inspections and evaluations. The tank meets the requirements for structural integrity in accordance with the API 653. The project scope required the inspection to include the evaluation of many aspects of the tank and its ancillary equipment to address tank integrity, including but not limited to, secondary containment, spill prevention, military standards related issues as directed by UFC 3-460-01 Table 8-1 and other applicable industry standards.

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

INSPECTION DATE

API In-Service (External) Inspection Date: 28 June 2021 Equipment Used:

Manufacturer: Olympus Model Number:38DL Calibration Method:

Steel Calibration Wedge SN 107514

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

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

Inspector(s): Daniel Elliott

STATE REGULATIONS

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

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

PREVIOUS INSPECTION DATES

API Out-of-Service (Internal) Inspection Date: May 2008 (Assumed) API In-Service (External) Inspection Date: 5 May 2016

RECOMMENDED FUTURE INSPECTION DATES (CALCULATIONS ARE PROVIDED)

API Out-of-Service (Internal) Inspection Date: May 2028 API 653: 653 6.4.2.1 / UFC 3-460-03: 8-4.1(e)

API Ultrasonic Thickness Inspection Date: 28 June 2036

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

API In-Service (External) Inspection Date: 28 June 2026 API 653: 6.3.2.1 / UFC 3-460-03: 8-4.1(d)

Daniel Elliott Project Manager Pacific Engineering & Consulting, Inc.

API 653 Certified Inspector No. 70788

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

API 653 Certified Inspector No. 56100

GENERAL TANK INFORMATION

ITEM DESCRIPTION

Owner United States Army Location Fort Hood, TX 76544 Facility Number 88045 Tank Number 310 State / Country Texas City Killeen Inspection Date June 28th – July 1st Tank Manufacturer American Tank & Vessel Design Standard API 650 Date of Construction 1985 Tank Contents Biodiesel Tank Serial Number Unknown Tank Diameter 12’ Shell Height 14’ Product Height 2’ 10-13/16” Tank Capacity 12,000 gallons Foundation Concrete Ring wall Construction Bottom External Inspection Only

Shell Vertical, cylindrical – consisting of (2) 7’ courses

Floating Roof N/A Fixed Roof Lap Welded, Shallow, fixed cone

Material Bottom Carbon Steel Shell Carbon Steel Floating Roof N/A Fixed Roof Carbon Steel

Cathodic Protection N/A Interior Coating System Unknown Exterior Coating System Standard epoxy coatings; date unknown Level Gauging Manual and electronic gauging Overfill Protection High Level Shut-Off Valve Piping Receipt 4” Carbon Steel

Issue 4” Carbon Steel Low Suction N/A N/A Water Draw-Off 2” Carbon Steel

Level Alarms High Level Alarm Type of Internal Floating Roof N/A

A. GENERAL PROJECT INFORMATION

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

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

For Tank 310, an API Standard 653 In‐service (External) Inspection was performed.

2. Site Information On June 28, 2021 Pacific Engineering & Consulting, Inc. performed API 653 In‐Service (External) Inspection of Tank 310 located at Ft Hood, Killeen, Texas. Fort Hood has nearly 65,000 soldiers and family members and serves as a home for the following units: Headquarters III Corps; First Army Division West; the 1st Cavalry Division; 13th Sustainment Command (formerly 13th Corps Support Command); 89th Military Police Brigade; 504th Battlefield Surveillance Brigade; 85th Civil Affairs Brigade; 1st Medical Brigade; and the 69th Air Defense Artillery Brigade. Fort Hood is the Army's premier installation to train and deploy heavy forces. A 214,968-acre installation, Fort Hood is the only post in the United States capable of stationing and training two armored divisions.

B. TANK INSPECTION COMMENTS

1. Tank Construction / Shell Tank 310 is a nominal 285 bbl, 12’ diameter by 14’ tall, Biodiesel, aboveground vertical cylindrical storage tank. The tank was constructed in 1985 by American Tank & Vessel as indicated by the information on the tank data plate. The information stenciled on the manhole indicated that the tank was last inspected out-of-service and cleaned in 2008. As‐built drawings of the original construction were not available to the inspector.

2. Tank Foundation The tank rests on a raised concrete ring wall foundation with six (6) inches visible above the containment floor. The foundation was visually evaluated for broken concrete, spalling, cracks, and vegetation against the bottom of the tank. A tell-tale leak detection system is installed at the perimeter of the ring wall. No water or fuel was found during the inspection. A shell settlement survey, in accordance with Appendix B of API Standard 653, found settlement within tolerance. Settlement results are listed in Appendix A.

3. Tank Shell The vertical cylindrical shell consists of four butt‐welded courses constructed of A-283-C carbon steel.

The exterior of the shell was visually inspected and evaluated for plumbness, roundness, peaking and banding. A 3D-scan of the exterior tank shell demonstrated that roundness was within tolerances established by API 650 7.5.3. See Appendix B. The critical zone and accessible shell plates were examined using an ultrasonic thickness meter. No general corrosion issues were found during the inspection. The results are listed in Appendix A.

4. Tank Appurtenances

a. Tank Roof

The coating system on the tank roof and appurtenances appear to be in good to moderate condition with moderate coating failure and corrosion observed on the roof, deck plate, inspection hatches, nozzle flanges, nuts, and bolts, etc. Evidence of water ponding was observed in isolated depressions along roof perimeter. The roof plates were examined using an ultrasonic thickness meter. No general corrosion issues were found during the inspection. The results are listed in Appendix A. No scaffold-cable support, as described in API 650 Fig 5-22, is installed on the roof. UFC 3-460-01 Table 8-1 requires two (2) scaffold-cable supports. A 2-inch Shand & Jurs Pressure Vacuum vent is installed on the roof.

b. Gauging An MTS L-series magnetostrictive probe provides product, water level and temperature data to the Red Lion ATG. The probe is installed in a 6‐inch nozzle on the roof, not meeting the requirements in UFC 3-460-01. The tank also has a Varec 2500 Tape Level Gauge whose reading is illegible due to water or product ingress. This must be repaired and possibly replaced. There is a 10-inch nozzle for manual gauging however there is no established datum plate. There is no 8-inch nozzle dedicated for temperature and bottom water sensor as required by UFC 3-460-01 Table 8-1.

c. Level Alarms There are no high or low level alarms installed, though there are nozzles installed for this purpose. A SOR 704 series mechanical level switch is installed in a 4-inch nozzle on the roof.

Overfill prevention is provided by a Cla-Val Co float switch connected to an hydraulically operated diaphragm control valve on the receipt piping.

d. Manways

There are two (2) 24 inch manways on the shell located 180 degrees across from each other, and one (1) 24 inch manway on the roof. The manways are required to be 36-inches in diameter and shall have davit arms to support the manway covers as required by AW 078-24-27.

e. Water Draw-Off A manual 2-inch low point water drain is provided for water/low product removal. During the inspection, the ball valve was found in the closed position and locked.

f. Stairs and Platforms There is a fixed steel ladder attached to the tank. There are a few areas of coating failure and corrosion on the ladder and platforms .

g. Grounding and Bonding There are two grounding cables connected to ground lugs welded to the tank shell.

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

6. Tank Piping System Fuel is received through a 4‐inch carbon steel piping system from the truck off-loading area and is issued through 4-inch carbon steel piping system. No low-suction system is installed.

The 4-inch receipt piping consists of a single block valve and a high liquid level shut-off valve. AW 078- 24-27 requires two block valves. A 1-inch carbon steel thermal relief system is installed to prevent thermal expansions. AW 078-24-27 requires stainless steel thermal relief piping. No calibration information was visible on the thermal relief valve.

The 4-inch carbon steel issue piping is equipped with a General Valve Twin Seal double-block and bleed valve. No thermal relief is installed on the issue piping as indicated in AW 078-24-27. A 1-inch carbon steel thermal relief system is installed to prevent thermal expansions. AW 078-24-27 requires stainless steel thermal relief piping. No calibration information was visible on the thermal relief valve.

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

8. Secondary Containment Secondary containment is provided by a concrete containment basin that is connected with the containment basins of the other fuel tanks in the tank farm. The containment was visually evaluated during the inspection for structural damage and adequate drainage controls. There is minor to moderate cracking throughout the containment area in addition to vegetation growth. There is evidence of ponding water accumulating around the ring wall foundation. Drainage control system appears adequate and capable for retaining water, however the containment drain valve is not compliant with AW 078-24-27. Pipe penetrations into concrete basin floor do not have sleeve seals as required by AW 078-24-27.

FINDINGS AND RECOMMENDATIONS

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

None.

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

a. TITLE: Required Manway Size

OBSERVATION: The current manways installed are 24”.

REFERENCE: UFC 3-460-01 Table 8-1 Manhole (f) RECOMMENDATION: The two (2) manways should be increased in size to 36 inches and have a davit arm installed.

b. TITLE: Carbon Steel Thermal Relief Piping OBSERVATION: Thermal Relief system on receipt piping is not stainless steel as required.

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

c. TITLE: No Scaffold Support

OBSERVATION: No scaffold support are provided on the tank.

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

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d. TITLE: Carbon Steel Thermal Relief Piping

OBSERVATION: Thermal Relief system on issue piping is not stainless steel as required.

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

e. TITLE: Only One Block Valve OBSERVATION: There is only one block valve installed on the receipt line.

REFERENCE: AW 78-24-27 Page G.05 Note 3 RECOMMENDATION: Install a second block valve after the Cla Valve.

f. TITLE: No Full Circumference Rail on Roof OBSERVATION: The roof does not have a full circumference rail attached.

REFERENCE: AW-78-24-27 Page D.11 Figure 5 RECOMMENDATION: A full circumference rail must be added to the roof.

g. TITLE: Repair Hairline Cracking in Dike Containment Area OBSERVATION: The are several locations where the secondary containment has cracked, and several locations where the joint sealant between slabs has failed. Cracks in the concrete can create areas where a containment breach could occur without detection, as well as allow vegetation to grow.

REFERENCE: UFC 3-460-01, paragraph 8-14.5 requires concrete dikes to resist and contain the full hydrostatic load when filled to capacity, which cracks in the dike may impede. All concrete surfaces in a diked enclosure should be sealed with a flexible, UV-resistant, fuel-resistant coating if required by State or local regulations.

RECOMMENDATION: Repair the approximate 4560’ of linear cracking throughout the entire containment area and seal the exposed joint material to prevent the intrusion of water and degradation of the concrete dike.

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

a. TITLE: Provide NFPA Hazard Label

OBSERVATION: The tank is not labeled with a NFPA hazard warning label.

REFERENCE: NFPA 30, paragraph 21.7.2.1 requires ASTs to be labeled in accordance with

NFPA 704.

RECOMMENDATION: Provide a new NFPA hazard warning label in accordance with NFPA 704.

b. TITLE: Monitor Roof Drainage OBSERVATION: There is evidence of water ponding in areas on the roof.

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

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

4. SIGNIFICANT FINDINGS per API 653, UFC 3-460-01, or AW 78-24-27 Standards The following information identifies the significant findings found during the tank inspection.

a. TITLE: Repair Coating System on Tank Roof, Appurtenances, Stairway and Associated Piping OBSERVATION: Localized minor coating failure and corrosion was observed on the surface of the circumferential stairway, tank roof and roof appurtenances, etc.

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

RECOMMENDATION: Remove corrosion from all isolated areas of deterioration. Clean and prep all the areas that require coating repairs, approximately 15 sqft, and apply a compatible coating system that meets military criteria. Corroded nuts and bolts should be removed and replaced with corrosion resistant nuts and bolts.

b. TITLE: Repair Joint Sealant in Ringwall Foundation OBSERVATION: The joint sealant in the concrete ringwall foundation has failed in several areas.

REFERENCE: UFC 3-460-03, Section 8-4.3.1 and 8-10.2.1 require all cracks to be cleaned and sealed with a fuel resistant sealant.

RECOMMENDATION: Replace the approximate 25’ of failed concrete ringwall foundation sealant with a fuel resistant sealant.

APPENDIX A: ENGINEERING CALCULATIONS

AND DRAWINGS SHELL SETTLEMENT

SURVEY

SHELL SETTLEMENT SURVEY

Tank Specification Unit D Diameter 12 ft.

C Circumference 37.6991 ft.

H Height 14 ft.

ΔY Age 36 years N Data Point Taken 8

Nmin Minimum of Data Points required 8 API-653 12.5.2 L Arc Length between measurement points 4.7124 ft.

Y Specified Minimum Yield Strength 23595 psi API 653 Table 4-1

R2 Coefficient of determination 0.9035 API 653 B.2.2.4(e)

|S|Max Maximum permissible out-of-plane deflection 0.0071 ft.

|S| Highest Calculated |S| 0.0067 ft.

Data Points, N

Actual (ft)

Optimum

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

1 4.8646 4.8615 0.003097 -0.00541 0.004334 0.003637 0.003637 PASS

2 4.8646 4.8700 -0.00541 -0.00059 0.003097 -0.00667 0.006668 PASS

3 4.8698 4.8704 -0.00059 0.002177 -0.00541 0.001032 0.001032 PASS

4 4.8646 4.8624 0.002177 0.003413 -0.00059 0.000763 0.000763 PASS

5 4.8542 4.8508 0.003413 -0.0037 0.002177 0.004176 0.004176 PASS

6 4.8385 4.8422 -0.0037 -0.00332 0.003413 -0.00375 0.003748 PASS

7 4.8385 4.8419 -0.00332 0.004334 -0.0037 -0.00364 0.003637 PASS

8 4.8542 4.8498 0.004334 0.003097 -0.00332 0.004446 0.004446 PASS

4.86 4.86

4.87

4.86

4.85

4.844.84

4.85

4.86

4.82

4.83

4.84

4.85

4.86

4.87

4.88

4.89

4.9

1 2 3 4 5 6 7 8 1

N DATA POINTS, EQUALLY SAPCED APART

TANK CIRCUMFERENCE (ΠD)

Shell Settlement Evaluation

Actual Edge Settlement Optimum Cosine Curve

SHELL THICKNESS CALCULATION

Tank Information Reference Owner/Operator United States Army Facility ID 88045 Tank ID 310 Inspection Date 6/28/2021 Plate Specification A 283-C Material Carbon Steel Manufactured Date 1975

Tank Specification Units D Diameter 12 ft.

H Height 14 ft.

G Specific Gravity 0.88 N/A ΔY Age 36 years

Shell Plate Properties Units T Specified Minimum Tensile Strength 55000 psi API 653 Table 4-1 Y Specified Minimum Yield Strength 30000 psi API 653 Table 4-1 S Maximum Allowable Stress (Course 1 &2) 23595 psi API 653 4.3.3.1 S Maximum Allowable Stress (All Other Courses) 25960 psi API 653 4.3.3.1

Course No.

Plate Specification

Course Height (ft)

Product Height (ft)

Maximum Allowable Stress (psi)

Joint Efficiency

Previous Measured Thickness (in)

Current Measured Thickness (in)

Minimum Acceptable Thickness (in)

1 A 283-C 7 14 23595 1 0.242 0.248 0.100 2 A 283-C 7 7 23595 1 0.241 0.249 0.100

Corrosion Rate (in/yr)*

Remaining Life (yrs)

Next Visual Inspection (yrs)

Next Ultrasonic Inspection (yrs)

0.0002* 740.00 5.00 15.00 0.0002* 745.00 5.00 15.00 *Let Cr=0.0002 inches per year for calculation purposes.

0.050

0.100

0.150

0.200

0.250

0.300

1 2

Th ic kn es s (in

Course

Shell Life Evaluation

Previous Measured Thickness (in)

Current Measured Thickness (in)

Minimum Acceptable Thickness (in)

SHELL UT MEASUREMENTS

Location No. Thickness (in) 1-1 0.247 1-1 0.248 1-1 0.250 1-1 0.247 1-1 0.245 1-2 0.252 1-2 0.248 1-2 0.250 1-2 0.251 1-2 0.250

ROOF UT MEASUREMENTS

Roof Ultrasonic Thickness Readings

Plate No

Thickness (in)

Plate Type Point Numbers

1 2 3 4 5 1-1 .193 .189 .193 .193 .193 C 1-2 .190 .190 .196 .199 .191 A 1-3 .199 .197 .199 .190 .193 B

SHELL NOZZLE / REPAD UT MEASUREMENTS

Nozzle Size (in)

Description 0° 90° 180° 270° Average Repad Repad Type

Top Right Botto m

Left Average

A 25 Manway 0.239 0.238 0.238 0.239 0.239 Yes A 0.243 0.248 0.247 0.247 0.246 B 4 Issue 0.333 0.334 0.333 0.333 0.333 Yes B 0.257 0.257 0.257 0.257 0.257 C 4 Receipt 0.342 0.335 0.335 0.337 0.337 Yes A 0.25 0.248 0.248 0.249 0.249 D 2 Low Point

Drain

0.238 0.238 0.238 0.238 0.238 No N/A N/A N/A N/A N/A N/A

E 25 Manway 0.239 0.24 0.242 0.242 0.241 Yes A 0.25 0.251 0.25 0.25 0.250 I 1 Blinded

Flange

0.135 0.135 0.136 0.137 0.136 No N/A N/A N/A N/A N/A N/A

J 1 Blinded Flange

0.135 0.135 0.135 0.135 0.135 No N/A N/A N/A N/A N/A N/A

CRITICAL ZONE SHELL THICKNESS

1 0.244 2 0.244 3 0.243 4 0.245 5 0.243 6 0.243 7 0.245 8 0.245 9 0.245

10 0.243 11 0.242 12 0.243 13 0.242 14 0.243 15 0.242 16 0.241 17 0.242 18 0.245 19 0.243 20 0.246 21 0.246 22 0.246 23 0.245 24 0.248 25 0.246 26 0.245 27 0.246 28 0.246 29 0.245 30 0.246 31 0.246 32 0.246 33 0.245 34 0.245 35 0.245 36 0.246 37 0.245 38 0.246 39 0.246 40 0.246

SHELL DROP UT MEASUREMENTS

2-1 0.248 2-1 0.250 2-1 0.249 2-1 0.249 2-1 0.249 1-2 0.242 1-2 0.245 1-2 0.246 1-2 0.244 1-2 0.242

APPENDIX B: 3-D DOCUMENTATION AND

ANALYSIS

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

ISOLATED SHELL DISTORTION

Roundness Report Course 1: Weld 1 +0.7500 ft

Station Radius Delta(ft) Pass/Fail 0.0416ft

1 0.0001 PASS

2 0.0031 PASS

3 0.0181 PASS

4 -0.0112 PASS

5 -0.0268 PASS

6 0.0037 PASS

7 0.0085 PASS

8 -0.0318 PASS

APPENDIX C: TANK DRAWINGS

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TANK 310/ FACILITY 88045 FORT HOOD KILLEEN, TX 76544

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TANK 310/ FACILITY 88045 FORT HOOD KILLEEN, TX 76544

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AutoCAD SHX Text Q

AutoCAD SHX Text Q

AutoCAD SHX Text A. 24" DIAMETER MANWAY 24" DIAMETER MANWAY B. 4" ISSUE 4" ISSUE C. 4" RECEIPT 4" RECEIPT D. 2" LOW POINT DRAIN 2" LOW POINT DRAIN E. 24" DIAMETR 24" DIAMETR F. 2" ATG 2" ATG G. 1" AUTO SHUT OFF 1" AUTO SHUT OFF H. 1" AUTO SHUT OFF 1" AUTO SHUT OFF I. 1" BLINDED FLANGE 1" BLINDED FLANGE J. 1" BLINDED FLANGE 1" BLINDED FLANGE K. BRACKET BRACKET L. BRACKET WITH GROUND WIRE BRACKET WITH GROUND WIRE M. LADDER BRACKET LADDER BRACKET N. LIFT BRACKET LIFT BRACKET O. ATG BRACKET ATG BRACKET P. ANCHOR CHAIR ANCHOR CHAIR Q. LEVEL ALARM BRACKETLEVEL ALARM BRACKET

NOZZLE LEGEND

APPENDIX D: API 653 CHECKLISTS FOR TANK

INSPECTIONS

Tank In-Service Inspection Checklist

Item Completed

X C.1.1 Foundation

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

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

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

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

C.1.1.3 Oiled Dirt or Sand

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

N/A

C.1.1.4 Rock

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

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

N/A

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

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

C.1.1.7 Cathodic Protection Review cathodic protection potential readings. N/A

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

Completed

X C.1.2.2 Internal (Floating Roof Tank)

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

N/A

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

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

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

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

Completed

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

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

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

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

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

N/A

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

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

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

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

C.1.3.12 Swing Lines: Target

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

Completed

X C.1.4 Roofs

C.1.4.1 Deck Plate Internal Corrosion

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

X

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

C.1.4.3 Roof Deck Drainage

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

C.1.4.4 Level of Floating Roof

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

N/A

C.1.4.5 Gas Test Internal Floating Roof

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

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

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

Completed

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

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

1) _______ _______ Opposite pair 1. N/A

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

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

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

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

Completed

X C.1.5.4 Autogauge: Inspection Hatch and Guides (Fixed Roof) a Check the hatch for corrosion and missing bolts. X b Look for corrosion on the tape guide’s and float guide’s wire anchors. X

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

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

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

C.1.5.8 Gauging Platform Drip Ring

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

C.1.5.9 Emergency Roof Drains

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

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

C.1.5.11 Vacuum Breakers

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

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

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

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

NOTES:

APPENDIX E: PHOTOGRAPHS

E.1: Tank 310 East View E.2: Tank 310 South View

E.3: East Manway 24” Diameter E.4: West Manway 24” Diameter

E.5: 4” Issue E.6: 4” Receipt

E.7: 2” Low Point Drain E.8: Ground Wire

E.9: Tank 311 Nameplate E.10: 2” ATG

E.11: 1” Blinded Flange E.12: 1” Auto Shut Off

E.13: 11” Groth Hatch E.14: 2” Varec Level Gauge

E.15: 2” Shand & Jurs Vacuum E.16: 6” Level Plus Transmitter

E.17: 4” High Level Alarm E.18: Varec Level Gauge

E.19: Anchor Chair (Typical)