Attachment K.2 API 653 Repair Report - Fac 400.pdf

TRANSMITTAL OF SHOP DRAWINGS, EQUIPMENT DATA

MATERIAL SAMPLES, OR MANUFACTURER'S

CERTIFICATES OF COMPLIANCE

DATE TRANSMITTAL NO.

CONTRACT NO.

PAGEPROJECT TITLE

LOCATION

33 56 13.13-19 11/4/2021

CMP - Grissom ARB Tanks 400, 402, 403

W9128F-16-D-0028 W9128F18F0190

Item Description Variation QA Code

62 API 653 Inspection Report - Tank 400 No A

SECTION III - GOVERNMENT REVIEW REMARKS

No remarks

Attachment to ENG FORM 4025-R Page 1 of 1

TRANSMITTAL OF SHOP DRAWINGS, EQUIPMENT DATA, MATERIAL SAMPLES, OR

MANUFACTURER'S CERTIFICATES OF COMPLIANCE

For use of this form, see ER 415-1-0; the proponent agency is CECW-CE

SECTION I - REQUEST FOR APPROVAL OF THE FOLLOWING ITEMS (This section will be initiated by the contractor)

TO: FROM: CONTRACT NO. THIS IS A:

PROJECT TITLE AND LOCATIONSPECIFICATION SEC. NO. (Cover only one section with each transmittal) THIS TRANSMITTAL IS FOR: (Check one)

DATE TRANSMITTAL NO.

NEW TRANSMITTAL

9/28/2021 33 56 13.13-19

CMP - Grissom ARB Tanks 400, 402, 403,33 56 13.13-Steel Tanks with Fixed Roofs

W9128F-16-D-0028 W9128F18F0190

Defense Fuels Resident Office PO Box 13287 Offutt AFB, NE 68113

Reliable Contracting Group, LLC 13035 Middletown Industrial Blvd.

Louisville KY40223-4762

USA

FIO GA DA CR DA/CR DA/GA S

ITEM NO.

(See Note

3) a.

DESCRIPTION OF SUBMITTAL ITEM

(Type size, model number/etc) b.

SUBMITTAL TYPE CODE

(See Note 8) c.

NO. OF

COPIES

d.

CONTRACT REFERENCE

DOCUMENT

SPEC. PARA

NO.

e.

DRAWING

SHEET NO.

f.

FOR

CONTRACTOR

USE

g.

VARIATION

(See

Instruction No.

6) h.

FOR CE USE

CODE

(Note 9) i.

62 API 653 Inspection Report - Tank 400 11 - CLOSEOUT SUBMITTALS 14 A No

Contractor Reviewer: Chris Bertz, Project Manager, PH: (502) 244-2596, Ext. 4474

Remarks from Contractor

ENCLOSURES RETURNED (List by item No.) DATE

SECTION II - APPROVAL ACTION

NAME, TITLE AND SIGNATURE OF APPROVING AUTHORITY

I certify that the above submitted items have been reviewed in detail and are correct and in the strict conformance with the contract drawings and specifications except as otherwise stated.

NAME AND SIGNATURE OF CONTRACTOR

ENG FORM 4025-R, JUL 2015 REPLACES EDITION OF MAR 2012, WHICH IS OBSOLETEPage 1 of 1 thurt Typewriter Chris Bertz, Project Manager

Reliable Contracting Group

13035 Middletown Industrial Blvd.

Louisville, KY 40223

33 56 13.13-19

_X_ Approved

__ Approved with corrections as noted on submittal data and/or attached sheet(s).

Signature:______________________________________________________________

Title: Chris Bertz, Project Manager, PH: 502-244-2596, Ext. 4474

Date: 9/28/2021

Item # 62 – API 653 Inspection Report – Tank 400

US Army Corps of Engineers

Omaha District

API 653 Repair Inspection Report - Final

Grissom Joint ARB

Tank Number 400

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

(USACE POL-MCX)

29 July 2021

Table of Contents

ACRONYMS AND ABBREVIATIONS

SUITABILITY FOR SERVICE MEMORANDUM

GENERAL TANK INFORMATION

TANK REPAIRS

1. Remove and Replace Tank Bottom

2. Provide Concrete Ringwall Foundation

3. Remove and Replace External Tank Roof

4. Repair Tank Coatings

5. Repair Tank Level Alarms

6. Repair Shell Overflows

7. Repair Tank Stairs

8. Repair Manways

9. Provide Low Suction Piping

10. Provide Thermal Relief Piping

11. Provide Water Draw-Off Tank

12. Repair Stilling Wells

13. Repair Issue/Receipt Piping

14. Provide Anti-Rotation Cables

15. Replace Internal Floating Roof

16. Replace Mechanical Tape Gauge

17. Remove AFFF System and Supports

18. Provide Tank Identifiers

19. Provide Tank Strapping Chart

20. Perform Hydrostatic Test

21. Perform Non-Destructive Examination in Accordance with API 653

22. Provide Final API 653 Report

23. Replace AST Containment Systems

APPENDIX A: ENGINEERING DRAWINGS

APPENDIX B: VERTICALITY REPORT

ACRONYMS AND ABBREVIATIONS

API

ASME

ASNT

ATG

American Petroleum Institute

American Society of Mechanical Engineers

American Society of Non-Destructive Testing

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

SUITABILITY FOR SERVICE

MEMORANDUM

STORAGE TANK NO. 400

Out-of-Service API 653 Tank Inspection and Repair

Contract No. W9128F-16-D-0028, Delivery Order No. W9128F18F0190

Grissom ARB, IN

Tank 400 was inspected 1 April 2021 to 29 July 2021. An API 653 Repair Inspection was performed by Darrin

Laughlin. This tank report is an Appendix to the original API 653 tank report.

On this date 29 July 2021, the tank is in suitable condition for return to service.

Mandatory Repairs

No mandatory repairs were required.

Other Repairs and Maintenance

1. Remove and Replace Tank Bottom

2. Provide Concrete Ringwall Foundation

3. Remove and Replace External Tank Roof

4. Repair Tank Coatings

5. Repair Tank Level Alarms

6. Repair Shell Overflows

7. Repair Tank Stairs

8. Repair Manways

9. Provide Low Suction Piping

10. Provide Thermal Relief Piping

11. Provide Water Draw-Off Tank

12. Repair Stilling Wells

13. Repair Issue/Receipt Piping

14. Provide Anti-Rotation Cables

15. Replace Internal Floating Roof

16. Replace Mechanical Tape Gauge

17. Remove AFFF System and Supports

18. Provide Tank Identifiers

19. Perform NDE Examination

20. Replace AST Containment Systems

Inspection Intervals

The next In-Service Inspection should occur in 5 years (July 2026) and the next UT thickness measurements should occur in 9 years (June 2030) in accordance with API 653.

The next Out-of-Service inspection should occur in 10 years (July 2031).

This storage tank suitability for service evaluation has been completed in accordance with the requirements of API Standard 653, 5th Edition, Addendum 2, May 2020.

Prepared by:

Darrin A Laughlin

US Tank Inspection Manager

AmSpec

API 653 Certified Inspector No. 29230

GENERAL TANK INFORMATION

ITEM DESCRIPTION

Owner Grissom Joint Air Reserve Base

Location Grissom ARB, Indiana

Tank Number 400

State / Country Indiana, USA

City Cass and Miami Counties

Inspection Date 4/1/21 – 7/29/21

Tank Manufacturer Chicago Bridge & Iron

Design Standard API 12C

Date of Construction Assumed 1955

Tank Contents JP-8

Tank Diameter 60.0000 Feet

Shell Height 30.3333 Feet

Product Height 25.00 Feet

Tank Capacity 577,475 Gallons

Foundation Concrete Ringwall

Construction

Bottom Lap-Welded

Shell Butt-Welded

Floating Roof Petrex Aluminum Honeycomb

Fixed Roof Lap-Welded

Material

Bottom 0.3125” A36

Shell Assumed A36

Floating Roof Aluminum

Fixed Roof 0.250” A36

Cathodic Protection Impressed Current

Interior Coating System Thin Film Epoxy

Exterior Coating System Thin Film Epoxy

Level Gauging Varec 2500 Tape Gauge

Overfill Protection High and High-High Level Alarms

Piping Receipt 8” Carbon Steel

Issue 10” Carbon Steel

Low Suction 4” Carbon Steel

Water Draw-Off 2” Carbon Steel

Level Alarms Low-Low Level Alarm: 2’-6.5”

Low Level Alarm: 2’-10”

High Level Alarm: 25’-5.75”

High-High Level Alarm: 26’-3.25”

Type of Internal Floating Roof Petrex Aluminum Honeycomb

TANK REPAIRS

1. Remove and Replace Tank Bottom

OBSERVATION: Tank bottom was replaced with new cone down, lap-welded bottom.

2. Provide Concrete Ringwall Foundation

OBSERVATION: New concrete ringwall foundation.

3. Remove and Replace External Tank Roof

OBSERVATION: New cone-up, lap-welded fixed roof installed

4. Repair Tank Coatings

OBSERVATION: New interior tank coatings on shell, bottom, fixed roof, and all interior appurtenances.

5. Repair Tank Level Alarms

OBSERVATION: New level alarms installed

6. Repair Shell Overflows

OBSERVATION: New shell overflows installed at new overflow elevations

7. Repair Tank Stairs

OBSERVATION: Existing stairs were replaced with a new galvanized stair system.

8. Repair Manways

OBSERVATION: New 36” manways installed

9. Provide Low Suction Piping

OBSERVATION: New 4” low suction line installed

10. Provide Thermal Relief Piping

OBSERVATION: New thermal relief piping systems installed on the issue, receipt, and new 4” low suction line

11. Provide Water Draw-Off Tank

OBSERVATION: New stainless steel 55-gallon water draw-off tank installed

12. Repair Stilling Wells

OBSERVATION: New 8” and 6” aluminum stilling wells installed

13. Repair Issue/Receipt Piping

OBSERVATION: External issue/receipt piping system was modified

14. Provide Anti-Rotation Cables

OBSERVATION: Anti-rotation cables installed

15. Replace Internal Floating Roof

OBSERVATION: NEW ALUMINUM HONEYCOMB FLOATING ROOF INSTALLED

16. Replace Mechanical Tape Gauge

OBSERVATION: New mechanical tape gauge installed

17. Remove AFFF System and Supports

OBSERVATION: All materials related to the AFFF system were removed

18. Provide Tank Identifiers

OBSERVATION: Data plate was installed

19. Provide Tank Strapping Chart

OBSERVATION: New strapping charts in 1/16” increments were provided.

20. Perform Hydrostatic Test

OBSERVATION: Tank hydrostatic test was performed.

21. Perform Non-Destructive Examination in Accordance with API 653

OBSERVATION: MT examination was performed at the tank tape gauge supports, stairway platform supports, and AFFF piping supports.

22. Provide Final API 653 Report

OBSERVATION: A final API 653 report for UT floor scan was provided.

23. Replace AST Containment Systems

OBSERVATION: New FML containment system with drain inlet was provided.

APPENDIX A: ENGINEERING DRAWINGS

APPENDIX B: VERTICALITY REPORT

April 1, 2021

VERTICALITY REPORT

FOR

GRISSOM AFB

GRISSOM AFB, IN.

This report documents the findings of the examinations performed on April 1, 2021.

Amspec personnel:

Darrin Laughlin

Nick Guilliam

INTRODUCTION

1 DESCRIPTION……………………………………………………………………………..

2 SUMMARY…………………………………………………………………………………..

3 VERTICALITY SURVEY…………………………………………………………………

TABLE OF CONTENTS

Owner: GRISSOM AFB Date: 4/1/2021

Location: INDIANA

Tank: 400

SUMMARY

The following is a summary of the significant findings of the inspection.

A verticality survey was performed to measure the radial deviations of the shell. The maximum out‐of‐plumbness was found to be at Station No. 4 which deviated outwards by 1.344 inches.

The maximum calculated internal diameter was found to be 60.101 feet at Station

2 (diametrically opposite Station 6) at an elevation of 16.2 feet. The minimum calculated internal diameter was found to be 59.841 feet at Station 1

(diametrically opposite Station 5) at an elevation of 1 foot.

Client #:

Tank: 400

VERTICALITY SURVEY

METHODOLOGY

The verticality survey was conducted at eight (8) vertical stations, evenly spaced around the tank starting at the Gauge Point. Using the bottom course as a reference circle, ( 3.5 foot elevation), the shell deviations were measured with three (3) readings per course, one foot above the lower horizontal weld, at the middle of the course, and one foot below the upper horizontal weld.

The analysis involves calculating the internal tank diameter at various elevations.

The internal diameter is calculated by using two methods. A two (2) point analysis, whereby shell deviations diametrically opposed to each other are used to calculate an internal diameter thus giving the verticality, and a three (3) point analysis where by the shell deviations at three (3) triangulated stations are used to calculate an internal diameter thus giving the roundness.

Tank: 400

VERTICALITY SURVEY

2 POINT DIAMETER CALCULATION AT DIFFERENT ELEVATION

RADIAL POINT ELEVATION

OFFSET DELTA OFFSET DELTA CAL. TANK

REFERENCE inch 359.778 RADIUS in. 359.778 RADIUS in. INSIDE DIA ft.

REF. OFFSET COURSE 1 ‐ 1 FT. 358.818 ‐0.96 359.274 ‐0.504 59.841

COURSE 1 ‐ 3.75 FT. ELEVATION 359.778 0 359.778 0 59.963

COURSE 1 ‐ 6.75 FT. ELEVATION 359.73 ‐0.048 359.706 ‐0.072 59.953

COURSE 2 ‐ 8.75 FT. ELEVATION 359.61 ‐0.168 359.562 ‐0.216 59.931

COURSE 2 ‐ 11.3 FT. ELEVATION 359.418 ‐0.36 359.37 ‐0.408 59.899

COURSE 2 ‐ 14.2 FT. ELEVATION 359.322 ‐0.456 359.154 ‐0.624 59.873

COURSE 3 ‐ 16.2 FT. ELEVATION 359.49 ‐0.288 359.178 ‐0.6 59.889

COURSE 3 ‐ 18.9 FT. ELEVATION 359.658 ‐0.12 359.274 ‐0.504 59.911

COURSE 3 ‐ 21.8 FT. ELEVATION 359.754 ‐0.024 359.274 ‐0.504 59.919

COURSE 4 ‐ 23.8 FT. ELEVATION 359.802 0.024 359.586 ‐0.192 59.949

COURSE 4 ‐ 26.75 FT. ELEVATION 359.778 0 359.658 ‐0.12 59.953

COURSE 4 ‐ 29.5 FT. ELEVATION 359.538 ‐0.24 359.778 0 59.943

MAXIMUM CALCULATED INTERNAL DIAMETER 59.963

MINIMUM CALCULATED INTERNAL DIAMETER 59.841

RADIAL DEVIATION (POSITIVE) 0.024 0

RADIAL DEVIATION (NEGATIVE) ‐0.96 ‐0.504

STATION 1 STATION 5

Tank: 400

COURSE 6

COURSE 5

COURSE 4

COURSE 3

COURSE 2

COURSE 1

Client #:

‐0.960

0.000

‐0.048

‐0.168

‐0.360

‐0.456

‐0.288

‐0.120

‐0.024

0.024

0.000

‐0.240

‐2.5002.500

Station 1

‐0.504

0.000

‐0.072

‐0.216

‐0.408

‐0.624

‐0.600

‐0.504

‐0.504

‐0.192

‐0.120

0.000

‐2.500 2.500

Station 5

Tank: 400

VERTICALITY SURVEY

2 POINT DIAMETER CALCULATION AT DIFFERENT ELEVATION

RADIAL POINT ELEVATION

OFFSET DELTA OFFSET DELTA CAL. TANK

REFERENCE inch 359.778 RADIUS in. 359.778 RADIUS in. INSIDE DIA ft.

REF. OFFSET COURSE 1 ‐ 1 FT. 360.786 1.008 360.378 0.6 60.097

COURSE 1 ‐ 3.75 FT. ELEVATION 359.778 0 359.778 0 59.963

COURSE 1 ‐ 6.75 FT. ELEVATION 360.234 0.456 359.754 ‐0.024 59.999

COURSE 2 ‐ 8.75 FT. ELEVATION 360.714 0.936 360.138 0.36 60.071

COURSE 2 ‐ 11.3 FT. ELEVATION 360.882 1.104 360.162 0.384 60.087

COURSE 2 ‐ 14.2 FT. ELEVATION 361.05 1.272 360.162 0.384 60.101

COURSE 3 ‐ 16.2 FT. ELEVATION 361.122 1.344 360.09 0.312 60.101

COURSE 3 ‐ 18.9 FT. ELEVATION 361.05 1.272 359.826 0.048 60.073

COURSE 3 ‐ 21.8 FT. ELEVATION 361.074 1.296 359.658 ‐0.12 60.061

COURSE 4 ‐ 23.8 FT. ELEVATION 361.098 1.32 359.586 ‐0.192 60.057

COURSE 4 ‐ 26.75 FT. ELEVATION 360.93 1.152 359.418 ‐0.36 60.029

COURSE 4 ‐ 29.5 FT. ELEVATION 361.002 1.224 359.322 ‐0.456 60.027

MAXIMUM CALCULATED INTERNAL DIAMETER 60.101

MINIMUM CALCULATED INTERNAL DIAMETER 59.963

RADIAL DEVIATION (POSITIVE) 1.344 0.6

RADIAL DEVIATION (NEGATIVE) 0 ‐0.192

STATION 2 STATION 6

Tank: 400

COURSE 6

COURSE 5

COURSE 4

COURSE 3

COURSE 2

COURSE 1

Client #:

1.008

0.000

0.456

0.936

1.104

1.272

1.344

1.272

1.296

1.320

1.152

1.224

‐2.5002.500

Station 2

0.600

0.000

‐0.024

0.360

0.384

0.384

0.312

0.048

‐0.120

‐0.192

‐0.360

‐0.456

Station 6

Tank: 400

VERTICALITY SURVEY

2 POINT DIAMETER CALCULATION AT DIFFERENT ELEVATION

RADIAL POINT ELEVATION

OFFSET DELTA OFFSET DELTA CAL. TANK

REFERENCE inch 359.778 RADIUS in. 359.778 RADIUS in. INSIDE DIA ft.

REF. OFFSET COURSE 1 ‐ 1 FT. 359.4168 ‐0.3612 359.61 ‐0.168 59.9189

COURSE 1 ‐ 3.75 FT. ELEVATION 359.778 0 359.778 0 59.963

COURSE 1 ‐ 6.75 FT. ELEVATION 359.658 ‐0.12 359.73 ‐0.048 59.949

COURSE 2 ‐ 8.75 FT. ELEVATION 359.706 ‐0.072 359.826 0.048 59.961

COURSE 2 ‐ 11.3 FT. ELEVATION 359.634 ‐0.144 359.73 ‐0.048 59.947

COURSE 2 ‐ 14.2 FT. ELEVATION 359.682 ‐0.096 359.634 ‐0.144 59.943

COURSE 3 ‐ 16.2 FT. ELEVATION 359.586 ‐0.192 359.562 ‐0.216 59.929

COURSE 3 ‐ 18.9 FT. ELEVATION 359.418 ‐0.36 359.634 ‐0.144 59.921

COURSE 3 ‐ 21.8 FT. ELEVATION 359.418 ‐0.36 359.658 ‐0.12 59.923

COURSE 4 ‐ 23.8 FT. ELEVATION 359.418 ‐0.36 359.97 0.192 59.949

COURSE 4 ‐ 26.75 FT. ELEVATION 359.514 ‐0.264 360.138 0.36 59.971

COURSE 4 ‐ 29.5 FT. ELEVATION 359.826 0.048 360.234 0.456 60.005

MAXIMUM CALCULATED INTERNAL DIAMETER 60.005

MINIMUM CALCULATED INTERNAL DIAMETER 59.9189

RADIAL DEVIATION (POSITIVE) 0 0.456

RADIAL DEVIATION (NEGATIVE) ‐0.3612 ‐0.216

STATION 3 STATION 7

Tank: 400

COURSE 6

COURSE 5

COURSE 4

COURSE 3

COURSE 2

COURSE 1

Client #:

‐0.361

0.000

‐0.120

‐0.072

‐0.144

‐0.096

‐0.192

‐0.360

‐0.360

‐0.360

‐0.264

0.048

‐2.5002.500

Station 3

‐0.168

0.000

‐0.048

0.048

‐0.048

‐0.144

‐0.216

‐0.144

‐0.120

0.192

0.360

0.456

Station 7

Tank: 400

VERTICALITY SURVEY

2 POINT DIAMETER CALCULATION AT DIFFERENT ELEVATION

RADIAL POINT ELEVATION

OFFSET DELTA OFFSET DELTA CAL. TANK

REFERENCE inch 359.778 RADIUS in. 359.778 RADIUS in. INSIDE DIA ft.

REF. OFFSET COURSE 1 ‐ 1 FT. 359.61 ‐0.168 359.826 0.048 59.953

COURSE 1 ‐ 3.75 FT. ELEVATION 359.778 0 359.778 0 59.963

COURSE 1 ‐ 6.75 FT. ELEVATION 360.114 0.336 359.85 0.072 59.997

COURSE 2 ‐ 8.75 FT. ELEVATION 360.234 0.456 359.874 0.096 60.009

COURSE 2 ‐ 11.3 FT. ELEVATION 360.258 0.48 359.922 0.144 60.015

COURSE 2 ‐ 14.2 FT. ELEVATION 360.354 0.576 360.114 0.336 60.039

COURSE 3 ‐ 16.2 FT. ELEVATION 360.522 0.744 360.09 0.312 60.051

COURSE 3 ‐ 18.9 FT. ELEVATION 360.546 0.768 360.09 0.312 60.053

COURSE 3 ‐ 21.8 FT. ELEVATION 360.618 0.84 360.21 0.432 60.069

COURSE 4 ‐ 23.8 FT. ELEVATION 360.426 0.648 360.234 0.456 60.055

COURSE 4 ‐ 26.75 FT. ELEVATION 360.426 0.648 360.186 0.408 60.051

COURSE 4 ‐ 29.5 FT. ELEVATION 360.498 0.72 360.21 0.432 60.059

MAXIMUM CALCULATED INTERNAL DIAMETER 60.069

MINIMUM CALCULATED INTERNAL DIAMETER 59.953

RADIAL DEVIATION (POSITIVE) 0.84 0.456

RADIAL DEVIATION (NEGATIVE) ‐0.168 0

STATION 4 STATION 8

Tank: 400

COURSE 5

COURSE 4

COURSE 3

COURSE 2

COURSE 1

Client #:

‐0.168

0.000

0.336

0.456

0.480

0.576

0.744

0.768

0.840

0.648

0.648

0.720

‐5.0000.0005.000

Station 4

0.048

0.000

0.072

0.096

0.144

0.336

0.312

0.312

0.432

0.456

0.408

0.432

‐5.000 5.000

Station 8

Tank: 400

VERTICALITY SURVEY

3 POINT DIAMETER CALCULATION AT DIFFERENT ELEVATION

RADIAL POINT ELEVATION

1 3 6 3 POINT 3 POINT

0 degrees 90 degrees 225 degrees INSIDE INSIDE

REFERENCE inch RADIUS in. RADIUS in. RADIUS in. RADIUS in. DIAMETER ft.

REF. OFFSET COURSE 1 ‐ 1 FT. 358.818 359.417 360.378 359.538 59.923

COURSE 1 ‐ 3.75 FT. ELEVATION 359.778 359.778 359.778 359.778 59.963

COURSE 1 ‐ 6.75 FT. ELEVATION 359.730 359.658 359.754 359.714 59.952

COURSE 2 ‐ 8.75 FT. ELEVATION 359.610 359.706 360.138 359.818 59.970

COURSE 2 ‐ 11.3 FT. ELEVATION 359.418 359.634 360.162 359.738 59.956

COURSE 2 ‐ 14.2 FT. ELEVATION 359.322 359.682 360.162 359.722 59.954

COURSE 3 ‐ 16.2 FT. ELEVATION 359.490 359.586 360.090 359.722 59.954

COURSE 3 ‐ 18.9 FT. ELEVATION 359.658 359.418 359.826 359.634 59.939

COURSE 3 ‐ 21.8 FT. ELEVATION 359.754 359.418 359.658 359.610 59.935

COURSE 4 ‐ 23.8 FT. ELEVATION 359.802 359.418 359.586 359.602 59.934

COURSE 4 ‐ 26.75 FT. ELEVATION 359.778 359.514 359.418 359.570 59.928

COURSE 4 ‐ 29.5 FT. ELEVATION 359.538 359.826 359.322 359.562 59.927

MAXIMUM CALCULATED INTERNAL DIAMETER 59.970

MINIMUM CALCULATED INTERNAL DIAMETER 59.923

Tank: 400

VERTICALITY SURVEY

3 POINT DIAMETER CALCULATION AT DIFFERENT ELEVATION

RADIAL POINT ELEVATION

2 4 7 3 POINT 3 POINT

45 degrees 135 degrees 270 degrees INSIDE INSIDE

REFERENCE inch RADIUS in. RADIUS in. RADIUS in. RADIUS in. DIAMETER ft.

REF. OFFSET COURSE 1 ‐ 1 FT. 360.786 359.610 359.610 360.002 60.000

COURSE 1 ‐ 3.75 FT. ELEVATION 359.778 359.778 359.778 359.778 59.963

COURSE 1 ‐ 6.75 FT. ELEVATION 360.234 360.114 359.730 360.026 60.004

COURSE 2 ‐ 8.75 FT. ELEVATION 360.714 360.234 359.826 360.258 60.043

COURSE 2 ‐ 11.3 FT. ELEVATION 360.882 360.258 359.730 360.290 60.048

COURSE 2 ‐ 14.2 FT. ELEVATION 361.050 360.354 359.634 360.346 60.058

COURSE 3 ‐ 16.2 FT. ELEVATION 361.122 360.522 359.562 360.402 60.067

COURSE 3 ‐ 18.9 FT. ELEVATION 361.050 360.546 359.634 360.410 60.068

COURSE 3 ‐ 21.8 FT. ELEVATION 361.074 360.618 359.658 360.450 60.075

COURSE 4 ‐ 23.8 FT. ELEVATION 361.098 360.426 359.970 360.498 60.083

COURSE 4 ‐ 26.75 FT. ELEVATION 360.930 360.426 360.138 360.498 60.083

COURSE 4 ‐ 29.5 FT. ELEVATION 361.002 360.498 360.234 360.578 60.096

MAXIMUM CALCULATED INTERNAL DIAMETER 60.096

MINIMUM CALCULATED INTERNAL DIAMETER 59.963

Tank: 400

VERTICALITY SURVEY

3 POINT DIAMETER CALCULATION AT DIFFERENT ELEVATION

RADIAL POINT ELEVATION

3 5 8 3 POINT 3 POINT

90 degrees 180 degrees 315 degrees INSIDE INSIDE

REFERENCE inch RADIUS in. RADIUS in. RADIUS in. RADIUS in. DIAMETER ft.

REF. OFFSET COURSE 1 ‐ 1 FT. 359.417 359.274 359.826 359.506 59.918

COURSE 1 ‐ 3.75 FT. ELEVATION 359.778 359.778 359.778 359.778 59.963

COURSE 1 ‐ 6.75 FT. ELEVATION 359.658 359.706 359.850 359.738 59.956

COURSE 2 ‐ 8.75 FT. ELEVATION 359.706 359.562 359.874 359.714 59.952

COURSE 2 ‐ 11.3 FT. ELEVATION 359.634 359.370 359.922 359.642 59.940

COURSE 2 ‐ 14.2 FT. ELEVATION 359.682 359.154 360.114 359.650 59.942

COURSE 3 ‐ 16.2 FT. ELEVATION 359.586 359.178 360.090 359.618 59.936

COURSE 3 ‐ 18.9 FT. ELEVATION 359.418 359.274 360.090 359.594 59.932

COURSE 3 ‐ 21.8 FT. ELEVATION 359.418 359.274 360.210 359.634 59.939

COURSE 4 ‐ 23.8 FT. ELEVATION 359.418 359.586 360.234 359.746 59.958

COURSE 4 ‐ 26.75 FT. ELEVATION 359.514 359.658 360.186 359.786 59.964

COURSE 4 ‐ 29.5 FT. ELEVATION 359.826 359.778 360.210 359.938 59.990

MAXIMUM CALCULATED INTERNAL DIAMETER 59.990

MINIMUM CALCULATED INTERNAL DIAMETER 59.918