Attachment J.3 - Fac 738 External Inspection Draft Report 2019.pdf

Preliminary Inspection Report Tank 738 Page 1 JBER, Alaska May 2019 EEI Project No.: 9458

IN-SERVICE API 653 INSPECTION

PRELIMINARY INSPECTION REPORT – 05/06/2019

TANK 738 (FACILITY 738)

JOINT BASE ELMENDORF-RICHARDSON (JBER), AK

SUMMARY

Enterprise Engineering Inc. (EEI) has been retained under U.S. Army Engineer District, AK Contract No. W911KB-15- D-0001, Delivery Order W911KB19F0058, to perform a comprehensive, in-service external inspection of Tank 738 at Joint Base Elmendorf-Richardson (JBER), AK. The inspection was performed on April 29 to May 1, 2019 in accordance with the applicable portions of API Standard 653, UFC 3-460-01, UFC 3-460-03, and the Statement of Work. David Stchyrba, P.E was the API 653 inspector of record.

Tank 738 is a field erected above ground storage tank. The tank was fabricated and erected in 1998. The tank diameter is 112 feet and the shell height is 51 feet 6 inches. It is of welded construction with butt-welded shell plates and lap-welded floor and roof plates. The nominal shell capacity is 80,000 Bbls and includes a fixed column supported cone up roof. The tank is currently in JP-8 service and is equipped with an aluminum honeycomb floating pan.

SUITABILITY FOR SERVICE

No mandatory repairs were identified that would require removing the tank from service.

REPAIR ITEMS

All repairs shall strictly meet the requirements of API 650 and API 653 regarding material, welding procedures and qualification of welders, non-destructive examination (NDE) of welding and testing requirements.

REQUIRED REPAIRS (MANDATORY)

Findings Repair Photo Mandatory repairs are repairs that are critical to the hydraulic and structural integrity of the tank and may require removing the tank from service.

No mandatory repairs were identified.

Repair decisions should not be finalized until the Draft Final API 653 Inspection Report with engineering evaluations has been issued. Additions and changes may be made upon review of field data and additional engineering suitability for service assessments.

Client will be notified via email if assessment identifies substantive revisions to this Preliminary Inspection Report.

Preliminary Inspection Report Tank 738 Page 2

EEI Project No.: 9458

RECOMMENDED REPAIRS (NON-MANDATORY)

Findings Repair Photo

The repairs listed below are not mandatory per API 653 or for structural and hydraulic integrity of the tank but should be performed if approved by the Government for the long-term preservation and integrity of the tank.

1. The tank has not been provided with an NFPA emergency responder diamond as required per Standard Design AW 78-24-27 Sheet D.13 Detail 3 and NFPA 704.

Provide an NFPA emergency responder diamond on the tank shell.

No photo

2. Sealant has been provided between the concrete ringwall and the floor projection. Epoxy coating was been applied over the sealant during a past repair of the floor projection coating.

The coating is cracked and disbonding at multiple locations, but the sealant cannot be fully inspected. The sealant was last replaced, in its entirety, in 2014. Corroded steel was observed protruding through the sealant at several locations.

Remove the sealant in its entirety.

Grind out the extraneous steel and provide coating repairs to the floor projection, if required. Prime surfaces and provide jet fuel-resistant sealant. Do not apply epoxy coating over the sealant.

Quantity: 352 LF

3. The tank is equipped with 6 combination roof vent/inspection hatches. The hold down latches are failing.

Remove the latches from all of the roof vents. Provide stainless steel link locks per Standard Design AW 78-24-27 Sheet D.09 Detail 1.

Quantity: 12 latches

4. Localized coating failure was observed on the shell valves, roof plate, underside of the flanges of roof appurtenances, shell manway bolts, the backside of the angle brackets supporting the HLCV pilot tubing and the backside of the WT vertical shell stiffeners.

Remove the coating from the affected areas. Clean and provide surface preparation in accordance with the coating manufacturer’s written recommendations and recoat the affected areas.

Quantity: 200 SF

Preliminary Inspection Report Tank 738 Page 3

EEI Project No.: 9458

RECOMMENDED REPAIRS (NON-MANDATORY)

Findings Repair Photo

5. The tank is equipped with two standpipes as part of the leak detection system. Water was observed within the standpipes. No product sheen or odor was detected.

Drain the water from the standpipes. Monitor the standpipes for fluid accumulation as part of routine maintenance.

6. Black moss was observed on the roof of the tank.

Remove the moss by pressure washing or other suitable non-mechanical means.

Note: Since the material will travel down the tank shell during cleaning, it is recommended to pressure wash the entire exterior of the tank.

7. The tank is equipped with 6 overflow ports located in the 7th shell course.

The bird screen at one overflow port has detached.

Re-attach the screen to prevent the ingress of birds.

Note: The affected overflow port is located above the tank stair.

8. The body cavity relief (BCR) on the shell valve for the fill, issue and low fuel nozzles relieve towards the tank.

Any failure of the small diameter line or valve would result in the inability to stop the leak without draining the tank.

Although this is an integrity risk, all of the valves have been provided with ice/snow shields to prevent damage due to falling ice.

Re-pipe the BCR hydraulic tubing so that it is connected to the pipe side valve boss instead of the tank side. This repair can be deferred until the next out-of-service interval.

Note: The valve at the water draw-off is piped in a similar manner and includes LR/DTR. However, it is the opinion of EEI that the risk is much lower, and that repair is not warranted since the components appear to be constructed from heavy wall hydraulic tubing and are not prone to damage.

Preliminary Inspection Report Tank 738 Page 4

EEI Project No.: 9458

RECOMMENDED REPAIRS (NON-MANDATORY)

Findings Repair Photo

9. There is a pressure relief loop at the fill and issue shell valves. The piping includes test tees to allow in-place testing of the relief valves. There is uncoated piping at each of the test tees. The piping is corroded.

Clean and provide surface preparation in accordance with the coating manufacturer’s written recommendations. Coat the affected areas.

Quantity: 4 locations

10. The tank is equipped with 40 tank anchors that secure the tank to the concrete ringwall. The Anchorage area was subjected to a magnitude 7.1 earthquake on November 30, 2018.

Although no damage was observed, multiple anchors appear to be slightly loose.

Snug tighten the nuts on all of the anchor rods.

11. The tank is equipped with a Varec tape gauge that includes a float and guide wires that penetrate the IFR.

The product level per the tape gauge is 33 feet 11 ½ inches and it is 31 feet 1-11/16 inches per the ENRAF. The tape appears to be wrapped around the corner of the cover over the IFR penetration. The tape may have been damaged during the magnitude 7.1 earthquake that struck Anchorage on November 30, 2018.

Repair the tape gauge.

12. Tank 738 is located within a shared containment area with Tanks 739 and

740. Runoff is directed to a retention pond at the north side of the site. The retention pond is drained by a single valve located outside of the containment wall. It was reported by facility personnel that the valve and approach area are frequently under water.

Provide an elevated platform at the valve and extend the valve actuator.

Note: This repair recommendation has been repeated in the reports for Tanks 739 and 740.

Preliminary Inspection Report Tank 738 Page 5

EEI Project No.: 9458

RECOMMENDED REPAIRS (NON-MANDATORY)

Findings Repair Photo

13. Moss and plants were observed growing within the gravel ballast of the containment dike.

Remove all of the organics.

Note: AFPET has previously commented that the removal of organics is a base general housekeeping/maintenance requirement.

RECOMMENDED REPAIRS FOR LONG TERM SERVICEABILITY

1. Long-term recommendations for scheduling the external in-service and internal out-of service inspections will be provided in the Draft Final Report.

API STANDARD 653

TANK IN-SERVICE INSPECTION CHECKLIST

Tank 738 – API 653 Inspection APPENDIX A, Page 1 JBER, Alaska EEI Project No.: 9458

Tank No.: 738 Prepared by: DAS

Location: JBER Date: 5/1/2019

EEI Project No.: 9458

Item Completed Comments

C. 1.1 FOUNDATION

Measure foundation levelness and bottom elevations (see Appendix B for extent of measurements)

Survey completed.

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.

Hairline cracking in ringwall at tank anchors. Continue to monitor.

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

N/A

c. Inspect for cavities under foundation and vegetation against bottom of tank.

None observed.

d. Check that runoff rainwater from the shell drains away from tank.

Drains away from tank.

e. Check for settlement around perimeter of tank. None observed.

C.1.2 Asphalt

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

N/A

b. Look for areas where leaking 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 tank is out of service.

N/A Floor will be inspected for backside corrosion at next O.O.S. inspection.

C.1.1.5 Site Drainage

a. Check site for drainage away from the tank and associated piping and manifolds.

Drains to a shared retention pond.

b. Check operating condition of the dike drains. Operator reported that valve is OK.

C.1.1.6 Housekeeping

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

Minor vegetation in containment area. No trash or flammables buildup.

Tank 738 – API 653 Inspection APPENDIX A, Page 2

EEI Project No.: 9458

Tank No.: 738 Prepared by: DAS

C.1.2 SHELLS

C.1.2.1 External Visual Inspection

a. Visually inspect for paint failures, pitting, and corrosion.

None of significance observed.

b. Clean off the bottom angle area and inspect for corrosion and thinning on plate and weld.

None observed. Coating OK.

c. Inspect the bottom-to-foundation seal, if any. Several failures observed.

C.1.2.2 Internal (Floating Roof Tank)

Visually inspect for grooving, corrosion, pitting and coating failures.

No concerns observed from roof inspection hatches.

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

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.

Wind girder OK.

b. Check support welds to shelf for pitting, especially on shell plates.

N/A Unable to access.

c. Note whether supports have reinforcing pads welded to shell.

Support bars welded directly to shell.

C.1.3 SHELL APPURTENANCES

C.1.3.1 Manways and Nozzles

a. Inspect for cracks or signs of leakage in weld joint at nozzles, manways, and reinforcing plates.

None

b. Inspect for shell plate dimpling around nozzles, caused by excessive pipe deflection.

None

c. Inspect for flange leaks and leaks around bolting. None

Tank 738 – API 653 Inspection APPENDIX A, Page 3

EEI Project No.: 9458

Tank No.: 738 Prepared by: DAS

d. Inspect sealing of insulation around manways and nozzles.

N/A

e. Check for inadequate manway flange and cover thickness on mixer manways.

N/A

C.1.3.2 Tank Piping Manifolds

a. Inspect manifold piping, flanges, and valves for leaks.

None

b. Inspect firefighting system components. N/A

c. Check for anchored piping which would be hazardous to the tank shell or bottom connections during earth movement.

N/A Piping is on slide pads.

d. Check for adequate thermal pressure relief of piping to the tank.

PRL provided.

e. Check operation of regulators for tanks with purge gas systems.

N/A

f. Check sample connections for leaks and for proper valve operation.

N/A

g. Check for damage and test the accuracy of temperature indicators.

N/A No shell mounted temperature probe.

h. Check welds on shell-mounted davit clips above valves 6 in. and larger.

N/A Manways have hinges instead of davits.

C.1.3.3 Autogauge System

a. Inspect autogauge tape guide and lower sheave housing (floating swings) for leaks.

None

b. Inspect autogauge head for damage. OK

c. Bump the checker on autogauge head for proper movement of tape.

OK

d. Identify size and construction material of autogauge tape guide (floating roof tanks).

Float and guide wires penetrate pan.

e. Ask operator if tape tends to hang up during tank roof movement (floating roof tanks).

OK

f. Compare actual product level to the reading on the autogauge (maximum variation is 2 in.).

Tape is wrapped around corner of floating pan penetration cover. Repair required.

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 Product level is not a low level.

h. Inspect condition of board and legibility of board-type autogages.

Tank 738 – API 653 Inspection APPENDIX A, Page 4

EEI Project No.: 9458

Tank No.: 738 Prepared by: DAS

i. Test freedom of movement of marker and float. N/A

C.1.3.4 Shell-Mounted Samples Station

a. Inspect sample lines for function of valves and plugging of lines, including drain or return-to-tank line.

N/A

b. Check circulation pump for leaks and operating problems.

N/A

c. Test bracing and supports for sample lines and equipment.

N/A

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 & connection to mixer.

N/A

C. 1.3.7 Swing Lines: Winch Operation

a. Nonfloating. Raise, then lower the swing line with 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 line 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.

b. All cable: check for wear or fraying. N/A

Tank 738 – API 653 Inspection APPENDIX A, Page 5

EEI Project No.: 9458

Tank No.: 738 Prepared by: DAS

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

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.)

C.1.4.2 Deck Plate Exterior Corrosion

Visually inspect for paint failure, holes, pitting, and corrosion product on the roof deck.

Minor coating failure.

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 in a floating roof indicate inadequate drainage design or, if to one side, a nonlevel roof with possible leaking pontoons).

Roof shingled incorrectly. Water held on half of roof plate lap welds.

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 No floating roof.

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.

Tank 738 – API 653 Inspection APPENDIX A, Page 6

EEI Project No.: 9458

Tank No.: 738 Prepared by: DAS

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 System There is an aluminum honeycomb pan, not a floating roof.

• Entry above the pan was not performed

• Top of pan was visually inspected through the 6 roof vent/inspection hatches

• Visible portion of the upper seal appears to be in satisfactory condition

a. Measure and record maximum seal-to-shell gaps at:

N/A

1. Low pump out N/A

2. Mid-shell N/A

3. High liquid level N/A

b. Measure and record annular space at 30-ft.

spacing (minimum of four quadrants) around roof and record. Measurements should be taken in directly apposite 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.

OK

e. Inspect visible metallic parts for corrosion and wear.

N/A

f. Inspect for openings in seals that would permit vapor emissions.

None observed

g. Inspect for protruding bolt or rivet heads against the shell.

None observed

h. Pull both primary and secondary seal systems back all around the shell to check their operation.

N/A Entry not performed

Tank 738 – API 653 Inspection APPENDIX A, Page 7

EEI Project No.: 9458

Tank No.: 738 Prepared by: DAS

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.

Hatch operates

b. On tanks governed by Air Quality Monitoring District rules, check for the condition of seal inside hatch cover.

Gasket ok.

c. Check for corrosion and plugging on thief and gauge hatch cover.

None observed.

d. Where sample hatch is used to reel gauge stock level, check for marker and tab stating hold-off distance.

Hold-off/reference height stenciled on roof manway.

e. Check for reinforcing pad where sample hatch pipe penetrates the roof deck.

OK

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 if the gauge well for thinning, size of slots, and cover condition.

OK

b. Check for a hold-off distance marker and tab with hold-off distance (legible).

Hold-off/reference height provided on manway cover plate.

c. On floating roof, 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.

Tank 738 – API 653 Inspection APPENDIX A, Page 8

EEI Project No.: 9458

Tank No.: 738 Prepared by: DAS

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.

N/A

C.1.5.4 Autogauge: Inspection Hatch and Guides (Fixed Roof)

a. Check the hatch for corrosion and missing bolts.

b. Look for corrosion on the tape guide’s and float guide’s wire anchor. N/A Float and guide wires are attached to the tank flor.

C.1.5.5 Autogauge: Float Well Cover

a. Inspect for corrosion. N/A

b. Check tape cable for wear or fraying caused by rubbing on the cover.

N/A

C.1.5.6 Sample Hatch (Internal Floating Roof)

a. Check overall conditions. OK

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. Jeep-style latches in poor condition.

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 Drain

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 Did not enter space above floating pan.

Tank 738 – API 653 Inspection APPENDIX A, Page 9

EEI Project No.: 9458

Tank No.: 738 Prepared by: DAS

C.1.5.12 Rim Vents

a. Check condition of the screen on the rim vent cover.

OK

b. Check for plating off or removal of rim vents where jurisdictional rules do not permit removal.

OK

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 covers, 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 Accessways See item C.2.12 below.

C. 2.12 ACCESS STRUCTURES

C. 2.12.1 Handrails

a. Identify and report type (steel pipe, galvanized pipe, square tube, angle) and size of handrails.

See Form 15.

b. Inspect for pitting and holes, paint failures.

c. Inspect attachment welds.

d. Identify cold joints and sharp edges. Inspect the handrails and midrails.

e. Inspect safety drop bar (or safety chain) for corrosion, functioning, and length.

f. Inspect the handrail between the rolling ladder and the gaging platform for a hazardous opening when the floating roof is at its lowest level.

C. 2.12.2 Platform Frame

a. Inspect frame for corrosion and paint failure.

b. Inspect the attachment of frame to supports and supports to tank for corrosion and weld failure.

c. Check reinforcing pads where supports are attached to shell or roof.

d. Inspect the surface that deck plate or grating rests on, for thinning and holes.

e. Check that flat-surface-to flat-surface junctures are seal welded.

C. 2.12.3 Deck Plate and Grating

Tank 738 – API 653 Inspection APPENDIX A, Page 10

EEI Project No.: 9458

Tank No.: 738 Prepared by: DAS

a. Inspect deck plate for corrosion-caused thinning or holes (not drain holes) and paint failure.

b. Inspect plate-to –frame wells for rust scale buildup.

c. Inspect grating for corrosion-caused thinning of bars and failure of welds.

d. Check grating tie down clips. Where grating had been retrofitted to replace plate, measure the rise of the step below and above the grating surface and compare with other risers on the stairway.

C. 2.12.4 Stairway Stringers

a. Inspect spiral stairway stringers for corrosion, paint failure, and weld failure. Inspect attachment of stairway treads to stringer.

No stringers. Each tread is welded directly to shell.

b. Inspect stairway supports to shell welds and reinforcing pads.

c. Inspect steel support attachment to concrete base for corrosion. N/A

C. 2.12.5 Rolling Ladder

a. Inspect rolling ladder stringers for corrosion. N/A

b. Identify and inspect ladder fixed rungs (square bar, round bar, angles) for weld attachment to stringers and corrosion, particularly where angle rungs are welded to stringers.

c. Check for wear and corrosion where rolling ladder attaches to gaging platform. N/A

d. Inspect pivot bar for wear and secureness. N/A

e. Inspect operation of self-leveling stairway treads. N/A

f. Inspect for corrosion and wear on moving parts. N/A

g. Inspect rolling ladder wheels for freedom of movement, flat spots, and wear on axle. N/A

h. Inspect alignment of rolling ladder with roof track. N/A

i. Inspect top surface of rolling ladder rack for wear by wheels to assure at least 18 in. of unworn track (track long enough).

j. Inspect rolling ladder track welds for corrosion. N/A

k. Inspect track supports on roof for reinforcing pads seal-welded to deck plate. N/A

l. Check by dimensioning, the maximum angle of the rolling ladder when the roof is on low legs.

Max angle __________________.

Tank 738 – API 653 Inspection APPENDIX A, Page 11

EEI Project No.: 9458

Tank No.: 738 Prepared by: DAS

m. If rolling ladder track extends to within 5 ft. of the edge of the roof on the far side, check for a handrail on the top of the shell on that side.

Additional Notes:

None.

Tank 738 – API 653 Inspection Appendix B, Page 1

EEI Project No.: 9458

ASSESSMENT OF COMPLIANCE WITH MILITARY CRITERIA

UFC 3-460-01, Table 8-1

(Complete UFC available at www.wbdg.org) Requirements for Vertical Aboveground Storage Tank (V-A) Only

ITEM APPURTENANCE

(UFC REQUIREMENT)

COMPLIANT

COMMENTS/RECOMMENDATION

(A blank in comments column indicates UFC compliance) YES NO

MANHOLE

c A shell manhole located above the internal floating pan’s high position to aid in venting the tank during cleaning and to provide access to the floating pan’s elastomeric wiper seals as required by DoD Standard AW 78-24-27.

There is no pan manway in the shell. There is no compelling reason to provide one. The installation of a manway would require a hydrostatic test.

e Roof manholes in accordance with API Std 650.

Locate the roof manholes near the perimeter of the roof at opposite ends of a diameter and approximately 90 degrees from the shell manholes.

The tank is only equipped with (1) 36” manway. There is no compelling reason to provide an additional manway. The seal of the floating pan can be inspected from the (6) inspection hatches.

f Shell manholes in accordance with API Std 650.

Two 36-inch shell manholes 180 degrees from each other. Align shell manholes parallel with prevailing wind direction. Support shell manhole covers by davits.

(3) 36” shell manholes in first shell course g A bolted cover in the roof for installation and removal of the internal floating pan as required by the tank supplier based on the pan manufacturer.

INSPECTION HATCHES

h A minimum of four 24-inch square inspection hatches on fixed roof tanks with floating pans.

Inspection hatches are not required for tanks without floating pans.

(6) combination roof vent/inspection hatches

LADDER/STAIRS

i Internal ladders (in accordance with OSHA criteria) for tanks of 5,000 gallons or larger with floating pans.

k Ladders, railings, toeboards, a spiral stairway, top platform, and handrail in accordance with API Std 650 and OSHA requirements. Provide stairways to access high level shut-off and alarms. Provide metal bar grating stair tread and platforms. Provide stair tread with non-slip nosings.

LEVEL ALARMS

l An individual automatic level alarm system, independent of the gauging device or system for each tank. Include high, high-high, low and low-low level alarms.

HLA consists of high-high and high

LLA consists only of low. There is no compelling reason to provide a low-low level alarm.

http://www.wbdg.org/ccb/browse_cat.php?o=29&c=4

Tank 738 – API 653 Inspection Appendix B, Page 2

EEI Project No.: 9458

ASSESSMENT OF COMPLIANCE WITH MILITARY CRITERIA

UFC 3-460-01, Table 8-1

(Complete UFC available at www.wbdg.org) Requirements for Vertical Aboveground Storage Tank (V-A) Only

ITEM APPURTENANCE

(UFC REQUIREMENT)

COMPLIANT

COMMENTS/RECOMMENDATION

(A blank in comments column indicates UFC compliance) YES NO

VENTS

m Open atmospheric vents with weather hoods and bird screens or pressure/vacuum vents in lieu of open vents. Comply with NFPA 30, host nation requirements, Chapter 2 of this UFC, API Std 650, API Std 2000, 29 CFR Part 1910.106, and DoD Standard Design AW 78-24-27, where applicable.

n Emergency relief venting with capacity in accordance with NFPA 30 and UL 142, as applicable or a weak roof-to-shell seam, as specified in API Std 650.

GAUGE/GAUGE HATCH/STILLING WELLS

o A liquid level gauge calibrated in 1/16-inch graduations mounted at 60 inches above the walking surface.

Varec tape gauge system. The tape is wrapped around the corner of the floating pan penetration cover.

Repair is required.

p Automatic Tank Gauging (ATG) for all tanks with fuel managed through the Defense Logistics Agency's Business Modernization {BSM Enterprise Resource Programs (ERP) - Fuels section}, that complies with API MPMS Chapter 3.

ENRAF ATG system r One 10-inch roof flanged nozzle with an 8-inch aluminum, fully slotted, stilling well for ATG near the edge of the roof near the top of the stairway platform.

Stilling well contains displacer for ATG and temperature probe.

s One 8-inch roof flanged nozzle with a 6-inch aluminum, fully slotted, stilling well for temperature and water bottom sensor, as close to or in the tank sump as possible. See DoD Standard Design AW 78-24-27.

Not equipped based on last out-of-service inspection report.

t One 10-inch roof nozzle and an aluminum, slotted stilling well extended to within 3 inches of the bottom of the tank* for gauging and sampling. A datum plate to establish a gauging zero point.

Combination ladder/stilling well.

PIPE CONNECTION

u Inlet fill connection. See Facility Plates 016, 017, and 018, as applicable.

Yes, based on last out-of-service inspection report.

v Main suction and low suction. See DoD Standard Design AW 78-24-27.

Main suction extends inward to near center sump instead of 1/2 radius.

OVERFILL PROTECTION

x Overfill protection with a hydraulically operated diaphragm control valve.

Cla-Val HLCV

Tank 738 – API 653 Inspection Appendix B, Page 3

EEI Project No.: 9458

ASSESSMENT OF COMPLIANCE WITH MILITARY CRITERIA

UFC 3-460-01, Table 8-1

(Complete UFC available at www.wbdg.org) Requirements for Vertical Aboveground Storage Tank (V-A) Only

ITEM APPURTENANCE

(UFC REQUIREMENT)

COMPLIANT

COMMENTS/RECOMMENDATION

(A blank in comments column indicates UFC compliance) YES NO

WATER DRAW-OFF

aa Water draw-off connections. See DoD Standard Design AW 78-24-27.

BALL JOINTS

ee Ball joints on pipes to relieve strain caused by tank settling or seismic activity.

Not provided. However, it is been the experience of EEI that the integrity of ball joints is suspect. Retrofit is not recommended.

CABLE SUPPORTS

ff On the fixed roof of all tanks, provide two scaffold cable supports in accordance with API Std 650.

Not equipped. There is no compelling reason to provide the supports.

STRIKER PLATES

gg Striker plates under all openings used for manual gauging in steel tanks and all openings in fiberglass tanks.

Based on last out-of-service inspection, there is a datum plate in stilling well used for manual gauging.

Additional Military Criteria Items, Comments or Notes:

None.

END OF DATA