J.4_Toolele-Fac 512T2 (Tank 512-A1)-FINAL-2015.pdf

TANK 512T1 (512T2) STI SP001

FORMAL EXTERNAL INSPECTION REPORT

Army Depot Tooele, Utah

A/E Contract No. W9128F-12-D-0006; Delivery Order No. 0007

Submitted to:

U.S. Army Corps of Engineers Omaha District

1616 Capital Avenue; Omaha, NE 68102

11 October 2015

Submitted by:

1011 Boulder Springs Drive, Suite 200; Richmond, Virginia 23225 Phone: 804.592.3900 Fax: 804.592.3901 www.brockenbrough.com

Job No. 15-002.24

SPCC Mandated Shop-Built AST Inspections Tooele Army Depot

Table of Contents page ii

TABLE OF CONTENTS

EXECUTIVE SUMMARY ................................................................................................................................... i

A. General Project Information

1. STI SP001 In-Service Inspections

2. Site Information

3. Previous Inspections

B. Tank Construction and Appurtenances

1. Tank Construction

2. Tank Supports and Foundation

3. Secondary Containment

4. Tank Coating System

5. Tank Appurtenances

a. Venting

b. Gauging

c. Stairs and Platforms

d. Grounding and Bonding

e. Other Appurtenances

6. Tank Piping System

7. Fire Protection Systems:

C. Findings and Recommendations

1. Mandatory Repairs

2. Recommended Repairs

a. Facility Numbering

b. Foundation

c. Bolting

d. Interstice Emergency Vent

e. Clock Gauge

f. Level Alarms

g. Coatings

h. Tank Sizing

i. Water Draw-off

j. Valves

3. Other Noted Items

a. Access Manholes

4. Recommended Site Upgrades

a. Fire Hydrants

b. Vegetation

c. Piping

D. Inspection Photographs

E. Tank Configuration Sketch

Appendix ‘1’ – STI Formal External Inspection Checklist

Appendix ‘2’ – STI Monthly and Annual Checklists

General Project Information page 3

A. General Project Information

1. STI SP001 In-Service Inspections

This project will perform in-service inspection of various tanks at facilities throughout the United

States. The basis of this inspection is a formal external inspection recommended in STI SP001

“Standard for the Inspection of Aboveground Storage Tanks”. Additional consideration is given to

Federal, State, and Local regulations as well as applicable Military Criteria and general industry standards. Unless otherwise noted, all inspections will be conducted while the tanks and associated piping systems remain in service.

For Tank 512T1, an STI SP001 Formal External Inspection was performed.

2. Site Information

On August 12th, 2015 Brockenbrough performed a site visit to Tooele Army Depot located near

Tooele, Utah to perform inspections of two aboveground storage tanks located at the GOV Fuel

Station. Tooele Army Depot (TEAD) is a premier active joint ammunition storage site. Tooele is responsible for shipping, storing, receiving, inspecting, demilitarization, and maintaining training and war reserve conventional ammunition. Tooele’s Ammunition Equipment and Manufacturing

Directorate (AEMD) designs and manufacturer’s ammunition peculiar equipment (APE) used in maintenance and demilitarization of munitions for all forces under the Department of Defense.

3. Previous Inspections

There were no previous formal inspections found to have been performed on Tank 512T1.

Tank Construction and Appurtenances page 4

B. Tank Construction and Appurtenances

1. Tank Construction

The manufacturer's data plate indicates the tank is a UL Listed "Insulated Secondary Containment

Aboveground Tank for Flammable Liquids, Protected Type". The UL Nameplate was present and fully readable. The tank measures 9' diameter by 42' long.

2. Tank Supports and Foundation

Tank rests on two steel saddles bearing on a concrete slab. The saddles were found to be in good condition. Numerous hairline cracks were observed in the concrete slab under the saddles.

3. Secondary Containment

The tank is a double wall protected tank.

4. Tank Coating System

The tank is carbon steel, with an exterior coating that is unknown. The interior coating of the tank is also unknown.

5. Tank Appurtenances

a. Venting

The primary containment is vented by a 2" OPW Model 623V pressure/vacuum vent. The capacity listed on the Clay and Bailey primary containment emergency vent is adequate. The vapor return piping from the cam lock connection at the truck delivery station is connected to a Tee in the tank vent riser and does not appear to obstruct the vent riser. The capacity listed on the Morrison Fig. 244 interstice emergency vent is also adequate.

b. Gauging

The tank’s Veeder Root ATG is installed through a 4-inch threaded coupling and is operable.

Manual test of the interstitial space leak detection alarm reveals it is operable. Manual gauging may be performed though a 4-inch threaded pipe nozzle piped to a 2-inch brass fire hydrant type pipe cap projecting through the ladder landing grating. There is also a 3-inch gauge hatch mounted on the 24-inch manhole cover. The Morrison Brothers mechanical clock gauge appears to be reading and sized correctly, however the paint overspray makes the clock gauge face cloudy.

c. Stairs and Platforms

Access to the top of the tank is provided by a caged ladder with a top landing leading to a catwalk over one side of the top of the tank.

Tank Construction and Appurtenances page 5

d. Grounding and Bonding

There is a ground cable connected to one of the tank’s saddles.

e. Other Appurtenances

The tank also has a submersible turbine issue pump mounted through a 4-inch threaded pipe nozzle with an anti-siphon device on the outlet of the issue pump, an interstitial monitoring system installed through a 2-inch threaded pipe nozzle, and a receipt level control valve installed through a 4-inch threaded pipe nozzle.

6. Tank Piping System

Fuel is received through 3-inch coated carbon steel piping from the nearby delivery point. Fuel is issued from the tank to the GOV fuel station through 2-inch coated carbon steel piping. The

2-inch coated carbon steel issue piping to the GOV fuel station transitions to underground in a pit located between Tanks 512T1 and 512T2.

7. Fire Protection Systems:

There is only one fire hydrant noted within the vicinity of this tank.

Tank Construction and Appurtenances page 6

Table B-1: General Tank Construction Data

Item Description

Owner U.S. Army

Tank Identification Facility 512T1 (Locally identified as Tank 512T2)

Location Tooele Army Depot GOV Gas Station, Tooele, Utah

Manufacturer ISOM Brothers Inc.

Design Standard Manufacturer's data plate indicates the tank is a UL Listed "Insulated Secondary Containment Aboveground Tank for Flammable Liquids, Protected Type"

Year Built 1998

Current Product Stored Mogas specific gravity: 0.7 to 0.77 vapor pressure: 7.8 to 15 psia at

100F, flash point: -50F, Class I combustible liquid

Dimensions 9' diameter by 42' long (horizontal cylindrical)

Storage Capacity 15,000 gallons nominal capacity

Cleaning, Inspection, or Repair

No record of previous cleaning, inspection, or repairs.

Foundation The tank is supported by two steel saddles, each bearing on a concrete slab.

RPB/Leak Detection Double wall tank with leak sensor.

Shell Construction Double wall lap welded steel.

Stairs/Ladders Ladder to landing above south end of tank provides access to catwalk above west side of tank.

Manholes (1) 24” manhole on top of tank shell (level alarm, gauge hatch, and float pilot installed through cover)

Interior Coating System Unknown

Exterior Coating System Unknown, but likely the original factory coating.

Level Gauging ATG is Veeder Root. Morrison Brothers mechanical clock gauge on top of tank shell.

Overfill Protection/Level Alarms

Veeder Root ATG alarms: Operator could not confirm.

Scully level alarms: High-high, High and Low level alarms.

Hydraulic level control valve, and overfill prevention valve in fill drop tube.

Piping 3" coated carbon steel from remote delivery truck connections ; 2" coated carbon steel to dispensers.

Venting/Vapor Emission Controls

2" OPW P/V vent Model 623V. Morrison 10” Fig. 244 interstice emergency vent. Clay and Bailey 10” primary containment emergency vent.

Strapping Tables Strapping tables provided by calibration contractor.

Water Draw-Off/Product Recover System

A water draw off nozzle on top of tank shell connected to fixed, hand-operated pump.

Secondary Containment Double wall tank.

Fire Protection System Only one fire hydrant found within the general tank vicinity.

Findings and Recommendations page 7

C. Findings and Recommendations

Tank 512T1 was found to be in generally fair condition. The tank is fully serviceable, with no mandatory deficiencies noted that require immediate repair. There were several items observed, however, that are not in full compliance with the Federal State, and Local regulations or Military Criteria. These noted deficiencies are listed below, with repair recommendations and order of magnitude repair cost estimates. For basis of the cost estimate, it is assumed that the repairs will be completed by local action such as the Reoccurring Maintenance and Minor Repair program.

1. Mandatory Repairs

Mandatory repairs represent items that require immediate attention, in order to prevent imminent risk to system operators, equipment integrity, or the adjacent environment. If these repairs cannot be completed within a two month period, the tank should be removed from service until the repairs are completed. For this particular tank, no mandatory repairs are required.

(No Mandatory Repairs Required)

2. Recommended Repairs

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.

Total Cost of Recommended Repairs: $16,200

a. Facility Numbering

Real property numbering for the Facility appears to be the reverse of that for the Army Corps of Engineers and possibly DLA. The Facility has this 15,000 gallon Mogas tank listed as 512T2, and has marked up the strapping charts to agree. The disconnect, regarding the property numbers between the Facility, USACE, and DLA should be resolved, and the records corrected, including the strapping charts, to indicate the correct facility numbers. Currently the tanks are not labeled to indicate the facility numbers or tank numbers. After the discrepancy in property numbers is resolved, the tanks should be labeled with the correct property and tank numbers.

Estimated Cost: $2,000

b. Foundation

There are numerous hairline cracks in the concrete pad under the (2) support saddles. The hairline cracks in the concrete pad under the (2) support saddles should be sealed to prevent moisture from penetrating the concrete and resulting in further deterioration.

Estimated Cost: $1,000

c. Bolting

The level control valve bolting is corroded. The level control valve bolting should be replaced with corrosion resistant bolting.

Findings and Recommendations page 8

Estimated Cost: $1,000

d. Interstice Emergency Vent

The interstice emergency vent cover will not close properly due to excessive fill material in the interstice. Failure of the interstice emergency vent cover to properly close could result in wasps or other insects nesting in the interstice. Failure of the interstice emergency vent cover to properly close could also allow rain water to enter the interstice resulting in corrosion of the primary and secondary containment. Remove the excessive fill material in the interstice at the emergency vent to allow the emergency vent cover to properly close.

Estimated Cost: $200

e. Clock Gauge

The face of the Morrison clock gauge is cloudy, possible due to paint overspray. Replace the clock gauge.

Estimated Cost: $1,000

f. Level Alarms

The independent high level alarm is not operable. Repair the independent high level alarm.

Estimated Cost: $1,000

g. Coatings

There is some corrosion where the coating has generally failed on the ladder and landing that provides access to the galvanized catwalk. In addition, the shell coating is stained under the corroded 4-inch by 2-inch reducer on the gauge port, as well as under the corroded level control valve bolts, emergency vent covers, and pump. Replace the coating on the ladder and landing that provides access to the galvanized catwalk. Coat the new level control valve bolts.

Repair the coating on the corroded gauge port reducer, emergency vent covers, and pump.

Repair the shell coating under the corroded appurtenances.

Estimated Cost: $3,000

h. Water Draw-off

The tank’s water draw-off nozzle is not equipped with an anti-siphon device. NFPA 30 -

22.11.4.3 requires means to prevent the release of liquid from the tank by siphon flow.

Provide an anti-siphon valve on the water draw-off nozzle.

Estimated Cost: $500

i. Valves

There is no tank isolation valve on the receipt nozzle. NFPA 30 – 22.13.1 requires each connection to an aboveground tank through which liquid can normally flow, be provided with

Findings and Recommendations page 9 a valve as close as practical to the shell. Provide a ball valve upstream of and adjacent to the receipt level control valve.

Estimated Cost: $5,000

j. Level Alarm System

While the tank has Scully high-high, high and low level alarms independent of the ATG system, the operator could not confirm the Veeder Root ATG System is programed with level alarms.

UFC 3-460-01, Table 8-1 item (I) requires ATG actuated high, high-high, low, and low-low level alarms. These four alarm points should be programmed into the ATG system by a qualified

SPAWAR Contractor in order to meet the requirements of the UFC.

Estimated Cost: $1,500

3. Other Noted Items

Other noted items represent minor non-critical deficiencies that are not recommended for repair due to a prohibitive cost to benefit ratio or other reasons. If these repairs are deemed necessary by the stakeholders, replacing the tank should be considered.

a. Access Manholes

UFC 3-460-01, Table 8-1.a requires all tanks of this configuration over 5,000 gallons to have two 36-inch access manholes. One of these manholes is required to include an internal ladder.

This repair is not recommended as the benefit of providing the new manholes and ladder does not justify the cost of the repair. The existing 24-inch manhole appears to be adequate for the

Activity’s operational needs.

b. Tank Sizing

The capacity of Tank 512T1, called Tank 512T2 by the facility and used by the facility to store

Mogas, is 15,000 gallons. The capacity of Tank 512T2, called tank 512T1 by the facility and used by the facility to store Diesel, is 12,000 gallons. UFC 3-460-01 7-3.3 requires vehicle fueling stations to comply with NFPA 30A Code for Motor Fuel Dispensing Facilities and Repair

Garages. NFPA 30A Paragraph 4.3.2.3 prohibits storing Class I liquid motor fuels (Mogas) in tanks with a maximum capacity larger than 12,000 gallons, unless such tanks are installed in a vault; but allows tanks storing Class II liquid motor fuels (Diesel) with maximum capacity up to

15,000 gallons. To comply with NFPA 30A, and the UFC, either reinstall Tank 512T1 in a vault or switch the service of the tanks so that the 15,000 gallon tank will be used to store diesel and the 12,000 gallon tank us used to store Mogas. The vapor return from the dispensers would also need to be routed to the other tank. The military may also consider cleaning and inspecting the tanks in preparation for the change in service. Alternatively, the authority having jurisdiction may issue a waiver of the NFPA 30 requirement to limit the capacity for the

Mogas tank.

Findings and Recommendations page 10

4. Recommended Site Upgrades

Site Upgrades are recommended upgrades to the site, which would still need to be addressed even if the tank were repaired or replaced. These items may be required by Federal, State and Local

Codes or by Military Criteria.

Total Cost of Site Upgrades: $17,000

a. Fire Hydrants

There is only one fire hydrant in the vicinity. A second fire hydrant is located approximately

340 feet from the tank. However, UFC 3-460-01 2-15.2.1 requires two fire hydrants within 300 feet of the tank. Provide a second fire hydrant within 300 feet of the tank.

Estimated Cost: $10,000

b. Vegetation

There is sage brush growing, against and under the tank. NFPA 30 - 21.6.6.3 requires that areas around tank storage facilities be kept free of weeds, trash, and other unnecessary combustible materials. While a local work order #10004252766 to cut brush has been issued, the vegetation may be expected to return, if measures are not taken to prevent it. Cutting back the vegetation around the tanks should be added to the regular maintenance schedule.

Estimated Cost: $0

c. Piping

The 3-inch remote receipt valve, basket strainer, and check valve over the delivery truck secondary containment pad are threaded bronze/brass and located approximately 30 feet from the tank. The receipt valve is a gate valve. NFPA 30 does not allow low melting point materials to be used above secondary containment near important structures. UFC 3-460-01, Chapter 7 does not allow gate valves, low melting point materials, or threaded connections in fuel piping. Replace the remote spill box receipt valve with a flanged steel ball valve. Replace the receipt basket strainer with flanged steel basket strainer. Replace the receipt check valve with a steel flanged check valve.

Estimated Cost: $7,000

Inspection Photographs page 11

D. Inspection Photographs

Overview of the Fueling Facility, Showing the Truck Delivery Point Area and the Tanks

Overview of Tank 512T1, Locally Identified as Tank 512T2

Mogas Diesel

Inspection Photographs page 12

Top of Tank and Appurtenances

Tank Saddle, Concrete Foundation Pad, and Grounding Cable

Inspection Photographs page 13

Tank Appurtenances Including the Interstitial Leak Detection, Issue Pump and Water Draw-off

Tank Appurtenances Including the Vapor Return Piping connected to Pressure/Vacuum Vent, Capped Gauging Port (Through the Access Platform), Plugged Nozzle and Capped Nozzle

Inspection Photographs page 14

Interstitial Emergency Vent in Foreground and Primary Emergency Vent in Background

Excessive Interstitial Fill Prevents Closure of Emergency Vent Cover

Inspection Photographs page 15

Manufacturer’s Data Plate is Present and Fully Readable

Fill Nozzle with a Level Control Valve in the Drop Tube, Hydraulic level Control Valve, and No Tank Isolation Valve on Nozzle

Tank Configuration Sketch

E. Tank Configuration Sketch

STI External Inspection Checklist

Appendix ‘1’ – STI Formal External Inspection Checklist

Project Name : :

Project Site : :

Project Location : :

Tank Facility No. : :

Local Tank ID No. : :

Inspection Date : :

Design : UL

# Horizontal Vertical

Manufacturer : :

Dimensions : : Useable =

Construction Date : : N/A :

Construction : Bare Steel Single-Wall Insulated

Coated Steel # Double-Wall Galvanic or

Concrete Double-Bottom

Plastic/Fiberglass Lined : 1998

Secondary

Containment : Earthen Dike Steel Dike

CRDM : N/A Yes

Release Prevention

Barrier : N/A Yes

Interior Coating : :

Piping : Issue : Size -

Material -

Connection Type -

Issue to -

Submitted to

Brockenbrough Job No.Tooele, Utah 15-002.20

AC 15008

Tooele Army Depot GOV Gas Station

Date Installed: Leak sensing probe

N/A

Synthetic Liner Other

Receipt : Size -

API

Rectangular

Other

Unknown

SWRI

Mogas

General Inspection Information

ISOM Brothers Inc.

9' diameter by 42' long

Concrete

Type:

Date Installed

Connection Type -

Exterior Coating Unknown

Overfill Protection / Level Alarms:

Veeder Root ATG with no known alarms; Scully high-high, high, and low level alarms; hydraulic level control valve, and overfill prevention valve in fill drop tube.

Unknown coated carbon steel threaded

GOV Fuel Station dispensers Receipt from -

STI SP001 FORMAL EXTERNAL INSPECTION (FEI) CHECKLIST

3" coated carbon steel threaded remote truck connections

2"

Impressed Current

Product

Date Installed: Type:

Other

Nominal =

Material -

Inspector Certification Number

SPCC Mandated Shop-Built AST Inspections

August 12th, 2015

512T1

512T2

15,000 gallons unknown

Cathodically Protected (Check one below)

Last Repair/Reconstruction Last Change of Service

Omaha District USACE

W9128F-12-D-0006Contract No.

Mike O'Connor

Capacity

Prior Inspection Date

Inspector Name

NA

Tank Specifications

Saddle pads are stitch welded to tank shell, but no corrosion was observed.

Pad plates between the supports and shell are in good condition

Cracking or spalling

Settlement

Cracking

A

A

A

A

A

A

X

A

Secured properly on foundation or grade

Corrosion or coating failure

Record AST data and check for accuracy against actual conditions

Review prior inspections, repairs and alterations data

Degradation

Ground slopes away from tank

7.1.3 Past Records

Soil resting against/covering side of tank

Exposed rebar

STI SP001 FORMAL EXTERNAL INSPECTION (FEI) CHECKLIST

A

NOTE: "A" IN THE STATUS COLUMN MEANS ACCEPTABLE; "X" IN THE STATUS COLUMN MEANS AN ITEM IS UNACCEPTABLE AND THERE IS A COMMENT.

Inspect against applicable industry standards

7.1.7 Tank Supports

Welds are in good condition

Water drains away from tank

A

A

ITEM

7.1 General

7.1.6 Tank Foundation

7.1.4 AST Nameplate Data

7.1.5 AST Fabrication

X

Check for :

Wash-out or voids

TASK STATUS COMMENTS

See photo. Per data plate E-vent capacity required is: 482,000 CFH pimary; 527,000 CFH secondary/annular (interstice)

Check for :

Manufacturer's data plate indicates tank is UL Listed "Insulated Secondary Containment

Aboveground Tank for Flammable Liquids, Protected Type"

NA

A

A

A

The tank is supported by two steel saddles, each bearing down on a concrete slab.

Numerous hairline cracks in concrete pad under (2) support saddles

Paint overspray makes Morrison Brothers mechanical clock gauge face cloudy.

Clock gauge appears to be reading and sized correctly.

Scully high level alarm not operable.

STI SP001 FORMAL EXTERNAL INSPECTION (FEI) CHECKLIST

Check for :

Stress or leakage A

A

Adequate size and capacity?

Pressure/ vacuum vent poppets

Other moving vent components

Degradation

TASK STATUS

Operable and in good condition?

Verify that the primary tank level gauge and secondary tank interstitial gauges move freely and the floats, guides, and attachments are in working order.

Veeder Root ATG is operable but with no known alarms. Manual test of interstitial space leak detection alarm reveales it is operable.

X

7.1.9.1 Piping and Piping

Connections

A

Corrosion on gauge port 4" x 2" reducer , LCV bolts, E-vent covers, and pump .

7.1.12 Tank Shell & Head X

Corrosion X

7.1.10 Tank Grounding &

Bonding

7.1.11 Stairways, Handrails, and Platforms

A Liquid level gauge length sized correctly for tank diameter?

Alarms are operable?

Strap secured and in good condition?

Check for :

A

A

A

X

Corrosion

Rusted bolted connections

Verify that components are moving freely and vent passageways are not obstructed for :

Broken welds

7.1.9.2 Vents (Normal/

Emergency) and

Pressure/Vacuum Devices

X

A

Emergency vent covers

X

ITEM

Bent members A

Coating Failure?

7.1.9.3 Tank Gauges

Corrosion on ladder, landing posts, and landing handrails.

Tank coating is in overall good condition, but there is some stained coating under corroded gauge port, LCV bolts, E-vent covers, and pump.

Interstice emergency vent will not close due to excessive insulation material in the interstice.

A

2" OPW P/V vent Model 623V, OK. Capacity listed on the Morrison Fig. 244 interstice emergency vent is 808,350 CFM and is adequate to satisfy the calculated required interstice emergency venting capacity of 519,660 CFH and the required interstice emergency venting capacity listed on the manufacturer's data plate of 527,000 CFH. The capacity of listed on the

Clay and Bailey emergency vent mounted on primary containment is 572,338 CFH and is adequate to satisfy the the required primary emergency venting capacity of 432,000 CFH listed on the manufacturer's data plate.

Cracking

Check shell and ancillary equipment for:

A

Exterior Corrosion

Check shell plates and welds for : .

TASK

Stress

Mechanical damage

7.3 Horizontal AST / 7.4 Vertical AST or Rectangular AST

A

A

A

A

A

A

ITEM

A

A

STATUS COMMENTS

7.3.1 / 7.4.1 Tank Shell, Heads, or Roof Dents A

Pinholes

Buckling

Distortion

Bulging

Distortion

STI SP001 FORMAL EXTERNAL INSPECTION (FEI) CHECKLIST

Check if leak detection equipment/ method is operating?

For leak detection equipment, check for:

7.5 Double-Wall AST or Double-Bottom AST

ITEM TASK STATUS COMMENTS

STI SP001 FORMAL EXTERNAL INSPECTION (FEI) CHECKLIST

7.5.1 Leak Detection

Equipment / Method

Double-Wall ASTs do not require UT readings

7.5.3 Tank thickness

measurement:

Leaks or presence of liquid in interstice?

The window is clean and clear in sight leak gauges

The wire gauges of electronic gauges for tightness and corrosion

A

N/A

Activate the test button, if applicable

Interstice dry.

A

7.5.2 Leaks

A

Leak sensing probe was tested and found to be working properly.

7) No tank isolation valve on receipt and no isolation valves either side of receipt level control valve.

8) No anti-siphon valve on water draw-off.

9) Lighting inadequate; however, facility is not manned at night.

5) No tank identification label.

6) Valves at remote spill box over secondary containment delivery truck pad are bronze.

STI SP001 FORMAL EXTERNAL INSPECTION (FEI) CHECKLIST

Additional Comments:

2) Corrosion on WDO piping, ATG Riser, E-vent covers, and pump (VTP mounted on top of tank).

3) No spill control slab under low point drain. Although some States require spill control under low point drains, research of applicable Codes and Standards does not indicate it is required in Utah.

4) Facility's tank designations are the reverse of the SOW. Per the facility, the 15k gal Mogas tank is Tank 512-T2 and and 12k gal diesel tank is Tank M512-T1.

1) Brush growing around and against tank. Some brush growing out of expansion joints of slab under tank. Local work order #10004252766 to cut brush issued.

STI Monthly and Annual Checklists

Appendix ‘2’ – STI Monthly and Annual Checklists

AST INSPECTION STANDARD 29 SEPTEMBER 2011

STI SP001 Monthly Inspection Checklist

General Inspection Information:

Inspection Date: Retain Until Date: (36 months from inspection date)

Prior Inspection Date: Inspector Name:

Tanks Inspected (ID #’s):

Inspection Guidance:

For equipment not included in this Standard, follow the manufacturer recommended inspection/testing schedules and procedures.

The periodic AST Inspection is intended for monitoring the external AST condition and its containment structure. This visual inspection does not require a Certified

Inspector. It shall be performed by an owner’s inspector who is familiar with the site and can identify changes and developing problems.

Upon discovery of water in the primary tank, secondary containment area, interstice, or spill container, remove promptly or take other corrective action. Before discharge to the environment, inspect the liquid for regulated products or other contaminants and disposed of it properly.

(*) designates an item in a non-conformance status. This indicates that action is required to address a problem.

Non-conforming items important to tank or containment integrity require evaluation by an engineer experienced in AST design, a Certified Inspector, or a tank manufacturer who will determine the corrective action. Note the non-conformance and corresponding corrective action in the comment section.

Retain the completed checklists for 36 months.

In the event of severe weather (snow, ice, wind storms) or maintenance (such as painting) that could affect the operation of critical components

(normal and emergency vents, valves), an inspection of these components is required as soon as the equipment is safely accessible after the event.

Item Task Status Comments

1.0 Tank Containment

1.1 Containment

structure

Check for water, debris, cracks or fire hazard

�Yes* �No �N/A

1.2 Primary tank Check for water �Yes* �No

1.3 Containment

drain valves Operable and in a closed position

�Yes �No* �N/A

1.4 Pathways and

entry

Clear and gates/doors operable

�Yes �No* �N/A

2.0 Leak Detection

2.1 Tank Visible signs of

leakage �Yes* �No

2.2 Secondary

Containment

Visible signs of leakage from tank into secondary containment

�Yes* �No

2.3 Surrounding soil Visible signs of

leakage

�Yes* �No �N/A

2.4 Interstice Visible signs of

leakage

�Yes* �No �N/A

AST INSPECTION STANDARD 30 SEPTEMBER 2011

3.0 Tank Equipment

3.1 Valves a. Check for leaks. �Yes* �No �N/A

b. Tank drain valves must be kept locked.

�Yes* �No �N/A

3.2 Spill

containment boxes on fill pipe

a. Inspect for debris, residue, and water in the box and remove.

�Yes* �No �N/A

b. Drain valves must be operable and closed.

�Yes* �No �N/A

3.3 Liquid level

equipment

a. Both visual and mechanical devices must be inspected for physical damage.

�Yes �No* �N/A

b. Check that the device is easily readable

�Yes �No* �N/A

3.4 Overfill

equipment

a. If equipped with a "test" button, activate the audible horn or light to confirm operation.

This could be battery powered. Replace the battery if needed

�Yes �No* �N/A

b. If overfill valve is equipped with a mechanical test mechanism, actuate the mechanism to confirm operation.

�Yes �No* �N/A

3.5 Piping

connections

Check for leaks, corrosion and damage

�Yes* �No

4.0 Tank Attachments and Appurtenances

4.1 Ladder and

platform structure

Secure with no sign of severe corrosion or damage?

�Yes �No* �N/A

5.0 Other Conditions

5.1 Are there other conditions that should

be addressed for continued safe operation or that may affect the site spill prevention plan?

�Yes* �No

AST INSPECTION STANDARD 31 SEPTEMBER 2011

Additional Comments:

AST INSPECTION STANDARD 32 SEPTEMBER 2011

STI SP001 Annual Inspection Checklist

General Inspection Information:

Inspection Date: Retain Until Date: (36 months from inspection date)

Prior Inspection Date: Inspector Name:

Tanks Inspected (ID #’s):

Inspection Guidance:

For equipment not included in this Standard, follow the manufacturer recommended inspection/testing schedules and procedures.

The periodic AST Inspection is intended for monitoring the external AST condition and its containment structure. This visual inspection does not require a Certified

Inspector. It shall be performed by an owner’s inspector who is familiar with the site and can identify changes and developing problems.

Remove promptly upon discovery standing water or liquid in the primary tank, secondary containment area, interstice, or spill container. Before discharge to the environment, inspect the liquid for regulated products or other contaminants and disposed of it properly.

In order to comply with EPA SPCC (Spill Prevention, Control and Countermeasure) rules, a facility must regularly test liquid level sensing devices to ensure proper operation (40 CFR 112.8(c)(8)(v)).

(*) designates an item in a non-conformance status. This indicates that action is required to address a problem.

Non-conforming items important to tank or containment integrity require evaluation by an engineer experienced in AST design, a Certified Inspector, or a tank manufacturer who will determine the corrective action. Note the non-conformance and corresponding corrective action in the comment section.

Retain the completed checklists for 36 months.

Complete this checklist on an annual basis supplemental to the owner monthly-performed inspection checklists.

Note: If a change has occurred to the tank system or containment that may affect the SPCC plan, the condition should be evaluated against the current plan requirement by a Professional Engineer knowledgeable in SPCC development and implementation.

1.0 Tank Containment

1.1 Containment

structure

Check for:

• Holes or cracks in containment wall or floor

• Washout

• Liner degradation

• Corrosion

• Leakage

• Paint failure

• Tank settling

�Yes* �No �N/A

2.0 Tank Foundation and Supports

2.1 Foundation Settlement or

foundation washout?

�Yes* �No

2.2 Concrete pad

or ring wall

Cracking or spalling? �Yes* �No �N/A

AST INSPECTION STANDARD 33 SEPTEMBER 2011

2.3 Supports Check for corrosion, paint failure, etc.

�Yes* �No �N/A

2.4 Water

drainage

Water drains away from tank?

�Yes �No* �N/A

2.5 Tank

grounding

Strap secured and in good condition?

�Yes �No* �N/A

3.0 Cathodic Protection

3.1 Gavlvanic

cathodic protection system

Confirm system is functional, includes the wire connections for galvanic systems

�Yes �No* �N/A

3.2 Impressed

current system

a. Inspect the operational components (power switch, meters, and alarms).

�Yes �No* �N/A

b. Record hour meter, ammeter and voltmeter readings.

�Yes �No* �N/A

4.0 Tank Shell, Heads, Roof

4.1 Coating Check for coating

failure �Yes* �No

4.2 Steel

condition

Check for:

• Dents

• Buckling

• Bulging

• Corrosion

• Cracking

�Yes* �No

4.3 Roof slope Check for low points

and standing water

�Yes* �No �N/A

5.0 Tank Equipment

5.1 Vents Verify that

components are moving freely and vent passageways are not obstructed for:

• Emergency vent covers

• Pressure/vacuum vent poppets

• Other moving vent components

�Yes* �No

AST INSPECTION STANDARD 34 SEPTEMBER 2011

5.2 Valves Check the condition of

all valves for leaks, corrosion and damage.

�Yes* �No

5.2.1 Anti-siphon, check and gate valves

Cycle the valve open and closed and check for proper operation.

�Yes �No* �N/A

5.2.2 Pressure

regulator valve

Check for proper operation. (Note that there may be small, 1/4 inch drain plugs in the bottom of the valve that are not visible by looking from above only)

�Yes �No* �N/A

5.2.3 Expansion

relief valve

Check that the valve is in the proper orientation. (Note that fuel must be discharged back to the tank via a separate pipe or tubing.)

�Yes �No* �N/A

5.2.4 Solenoid

valves

Cycle power to valve to check operation.

(Electrical solenoids can be verified by listening to the plunger opening and closing. If no audible confirmation, the valve should be inspected for the presence and operation of the plunger.)

�Yes �No* �N/A

5.2.5 Fire and

shear valves

a. Manually cycle the valve to ensure components are moving freely and that the valve handle or lever has clearance to allow valve to close completely.

�Yes �No* �N/A

b. Valves must not be wired in open position.

�Yes �No* �N/A

AST INSPECTION STANDARD 35 SEPTEMBER 2011

c. Make sure fusible element is in place and correctly positioned.

�Yes �No* �N/A

d. Be sure test ports are sealed with plug after testing is complete and no temporary test fixture or component remains connected to valve.

�Yes �No* �N/A

5.3 Interstitial

leak detection equipment

Check condition of equipment, including:

• The window is clean and clear in sight leak gauges.

• The wire connections of electronic gauges for tightness and corrosion

• Activate the test button, if applicable.

�Yes �No* �N/A

5.4 Spill

containment boxes on fill pipe

a. If corrosion, damage, or wear has compromised the ability of the unit to perform spill containment functions, replace the unit.

�Yes* �No �N/A

b. Inspect the connections to the AST for tightness, as well as the bolts, nuts, washers for condition and replace if necessary.

�Yes* �No �N/A

c. Drain valves must be operable and closed

�Yes* �No �N/A

5.5 Strainer a. Check that the

strainer is clean and in good condition.

AST INSPECTION STANDARD 36 SEPTEMBER 2011

5.5 Strainer b. Access strainer

basket and check cap and gasket seal as well as bolts.

�Yes �No* �N/A

5.6 Filter a. Check that the filter

is in good condition and is within the manufacturer’s expected service life.

Replace, if necessary.

�Yes �No* �N/A

b. Check for leaks and decreased fuel flow

�Yes �No* �N/A

5.7 Flame

arrestors

Follow manufacturer’s instructions. Check for corrosion and blockage of air passages.

�Yes* � No �N/A

5.8 Leak detector

for submersible pump systems

Test according to manufacturer's instructions and authority having jurisdiction (AHJ).

Verify leak detectors are suited and properly installed for aboveground use.

�Yes �No* �N/A

5.9 Liquid level

equipment

a. Has equipment been tested to ensure proper operation?

�Yes �No* �N/A

b. Does equipment operate as required?

�Yes �No* �N/A

c. Follow manufacturer’s instructions

�Yes �No* �N/A

5.10 Overfill

equipment

a. Follow manufacturer’s instructions and regulatory requirements for inspection and functionality verification.

�Yes �No* �N/A

b. Confirm device is suited for above ground use by the manufacturer

AST INSPECTION STANDARD 37 SEPTEMBER 2011

6.0 Insulated Tanks

6.1 Insulation Check condition of

insulation for:

• Missing sections

• Areas of moisture

• Mold

• Damage

�Yes* � No �N/A

6.2 Insulation

cover or jacket

Check for damage that will allow water intrusion

�Yes* No �N/A

7.0 Miscellaneous

7.1 Electrical

wiring and boxes

Are they in good condition?

�Yes �No* �N/A

7.2 Labels and

tags

Ensure that all labels and tags are intact and readable.

Additional Comments:

1011 Boulder Springs Drive, Suite 200 Richmond, Virginia 23225

Phone: 804-592-3900 Fax: 804-592-3901 www.brockenbrough.com