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USArmyCorpsofEngineers
OmahaDistrict
API653In‐Service
InspectionReport
IndianSpringsAFB,NV
Tank#1(Facility667)

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

(USACE POL‐MCX)

11/15/2017

API-653 In-Service Inspection Report Tank 1 (Facility 667) Indian Springs AFB, NV

TableofContents
ACRONYMSANDABBREVIATIONS..................................................................................................................................................3

GENERAL SUMMARY

INSPECTION DATE

PREVIOUS INSPECTION DATES

RECOMMENDED FUTURE INSPECTION DATES (CALCULATIONS SHALL BE PROVIDED)

A. GENERAL PROJECT INFORMATION

1. API 653 Inspection

2. Site Information

B. TANK INSPECTION COMMENTS

1. Tank Construction

2. Tank Foundation

3. Tank Shell

4. Tank Appurtenances

5. Tank Coating

6. Tank Piping System

7. Fire Protection System

8. Secondary Containment

C. FINDINGS AND RECOMMENDATIONS

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

2. REQUIRED REPAIRS to Fully Comply with API 653, or, Federal, State, and Local Codes

3.RECOMMENDEDREPAIRSTOFULLYCOMPLYWITHUFC3‐460‐01,AW78‐24‐27
StandardsorasPartofRegularMaintenance..................................................................................................................10

APPENDIX A: ENGINEERING CALCULATIONS

APPENDIX B: ENGINEERING DRAWINGS

APPENDIX C: ENGINEERING DATA

APPENDIX D: STI SP001 INSEPCTION CHECKLIST

APPENDIX E: PHOTOGRAPHS

ACRONYMS AND ABBREVIATIONS

API American Petroleum Institute

ASME American Society of Mechanical Engineers

ASNT American Society of Non‐Destructive Testing

ATG Automatic Tank Gauge

BBL Barrel

CFR Code of Federal Regulations

CP Cathodic Protection

DFT Dry Film Thickness

HLA High Level Alarm

HLCS High Level Control Shutoff

HHLA High‐High Level Alarm

LLA Low Level Alarm

LLLA Low‐Low Level Alarm

MFL Magnetic Flux Leakage

MT Magnetic Particle Testing

NACE National Association of Corrosion Engineers

NDT Non‐Destructive Testing

NFPA National Fire Protection Association

PSI Pounds per Square Inch

PT Penetrant Testing

P/V Pressure/Vacuum

RP Recommended Practice

PST Product Saver Tank

RT Radiography Testing

TML Thickness Measurement Location

TRV Thermal Relief Valve

UFC Unified Facilities Criteria

UFGS Unified Facilities Guide Specifications

ULS Ultra Low Sulfur

UT Ultrasonic Testing

VT Visual Testing

GENERALSUMMARY
SummaryofInspection
AnAPIStandard653In‐ServiceinspectionofTank#1(Facility667)atIndianSpringsAFB,NVwas
completedonNovember29,2017.Theshellservicelifeevaluationperformedashavinggreater
than30yearsofremainingshelllifeundercurrentconditions.
SignificantFindings(overview)
1. ThesecondarycontainmentdoesnotsatisfyNFPA30withintermediatebermwallheightof
atleast18inchesbetweenthetanks.
2. TheHDPElinerofthesecondarycontainmentareahasthreetearsattheissuelinepipe

supports.

3. The6‐inchissuelinedoesnothaveathermalreliefline.
4. Thetankdoesnothavealowsuctionline.
5. Thetankhasagroundingcablearoundthecircumferenceofthetank.Thetankgrounding
cableisexothermicallyweldeddirectlytotheshellatthreelocationsandisnot
exothermicallyweldedtothegroundlugontheshell.
6. ThetankisnotequippedwithanENRAFATGsystem.
7. ThetankisnotequippedwithaVITOwaterandtemperatureprobe.
8. ThefixedroofdoesnothaveanyAPIscaffoldsupports.
9. Thefixedroofdoesnothaveahandrailaroundtheperimeteroftheroof.Theroof
circulationvents\inspectionhatchesrequirefallprotectionwhenconductingannual
inspectionsofthefloatingroofandseals.

10. The tank does not have a facility label.

INSPECTIONDATE
APIIn‐ServiceInspectionDate:November29,2017
EquipmentUsed:Ultra‐SonicThicknessMeter
Manufacturer:GeneralElectric
Model:DMS2
CalibrationMethodsUsed:ZeroingProcedure,CopperCoating
CalibrationProcedure,andTwoPoint
CalibrationProcedure
Inspector(s):WayneK.Bailey
API653InspectorNo.1331
EquipmentUsed:SurveyingTool
Manufacturer:Leica
Model:3DDISTO
CalibrationMethodsUsed:Manufacturer
Inspector(s):WayneK.Bailey
API653InspectorNo.1331
STATEREGULATIONS
APIIn‐ServiceTankInspections:N/A
APIOut‐of‐ServiceTankInspections:N/A
NOTE:IftherearenostateregulationsfortankinspectionsthenN/Ashallresidein‐placeofthe
numberofyearsbetweeninspections.Ifstateregulationsreside,therecommendedfuture
inspectionsdatesshallbebasedonwhicheverismorestringentbetweentheSTIinspector’s
calculationsandtheStateregulations.
PREVIOUSINSPECTIONDATES
APIOut‐of‐Service(Internal)InspectionDate:January2014
APIIn‐Service(External)InspectionDate:January2014
RECOMMENDEDFUTUREINSPECTIONDATES(CALCULATIONSSHALLBEPROVIDED)
APIOut‐of‐Service(Internal)InspectionDate:Unknown(reportwasnotavailable)
APIIn‐Service(External)InspectionDate:November2022

Wayne K. Bailey, API‐653 #1331

GENERALTANKINFORMATION
ITEMDESCRIPTION
OwnerUSAirForce
LocationIndianSpringsAFB
FacilityNumber667
TankNumber1
State/CountryNevada,UnitedStates
CityIndianSprings
InspectionDateNovember29,2017
TankManufacturerOriginal:BrownTank&Steel
DesignStandardAPIStandard650
DateofConstructionOriginal:1979
Reconstructed:5/2014byWestonSolutions,Inc.
TankContentsJetA
TankSerialNumberUnknown
TankDiameter18’
ShellHeight16’½”
ProductHeight14’0”(basedonRONANsystemhigh‐highlevelalarm)
TankCapacity26,000gallons(estimated)(basedonRONANsystem)
FoundationConcretePad

Construction

BottomLap‐Welded
ShellButt‐Welded(Cylindrical)
FloatingRoofYes
FixedRoofLap‐Welded

Material

BottomCarbonSteel,UnknownGrade
ShellCarbonSteel,UnknownGrade
FloatingRoofAluminumHoneyComb
FixedRoofCarbonSteel,UnknownGrade
CathodicProtectionNone
InteriorCoatingSystemEpoxy
ExteriorCoatingSystemThinFilmEpoxy/Polyurethane
LevelGaugingVARECMTG,RONANATG,andNoVITOWater&TempProbe
OverfillProtectionMechanicalAutomaticShut‐Off

Piping

Receipt4"CarbonSteel
Issue6"CarbonSteel
LowSuctionNANone
WaterDraw‐Off1"StainlessSteel

Level Alarms & Controls

DescriptionRONANATGIndependent
High‐HighLevelAlarm:14’00‐00/16”14’00‐00/16”
High‐LevelAlarm:12’10‐09/16”12’10‐09/16”
Low‐LevelAlarm:2’04‐15/16”2’04‐15/16”
Low‐LowLevelAlarm:1’09‐00/16”1’09‐00/16”
High‐LevelControlShut‐

off:

12’ 10”

Type of Internal Floating Roof

Aluminum Honey Comb

A. GENERAL PROJECT INFORMATION

1. API653Inspection
ThisprojectwillperformAPI653inspectionsofvarioustanksatfacilitiesthroughout
theUnitedStates.Additionalconsiderationisgiventofederal,state,andlocal
regulations,aswellasapplicablemilitarycriteriaandgeneralindustrystandards.

An API Standard 653 In‐Service inspection was performed for Tank #1 (Facility 667).

2. SiteInformation
OnNovember29,2017ArgusConsultingandoursub‐consultant(InterSpec,LLC)
performedanAPI653In‐ServiceinspectionofTank1(Facility667),locatedatIndian
SpringsAFB,NV.

B. TANK INSPECTION COMMENTS

1. TankConstruction
Tank1(Facility667)isanominal30,000gallon,18’diameterby16’½”tall,JetA,
abovegroundverticalstoragetank.Theoriginalconstructionnameplatewasnotaffixed
tothetank.ThetankwasreconstructedandupgradedbyWestonSolutions,Inc.in

5/2014.

2. TankFoundation
Thetankrestsonaconcretepad.Thetankdoesnothaveacathodicprotectionsystem
andbottomleakdetection.Thetankhassecondarycontainment.Thefoundationwas
visuallyevaluatedduringtheinspectionforbrokenconcrete,spalling,cracks,and
vegetationagainstthebottomofthetank.Thetankbottomtopadsealantwas
inspected;itisinsatisfactorycondition.Ashellsettlementsurveywasperformed
duringtheinspectioninaccordancewithAppendixBofAPIStandard653.Settlement
resultsarelistedinAppendixA.
3. TankShell
Theshellisconstructedofcarbonsteelmaterial.Theshellisacylindricaldesign,butt‐
weldedtogether,consistingoftwo(2)courses.Theshellexteriorhasathinfilmepoxy
coatingsystem.Thecoatingwasinspectedfordisbonding,adhesion,deterioration,and
discoloration;itisinsatisfactorycondition.Theshellwasevaluatedforremainingmetal
thicknessutilizingultrasonictechnology.Theultrasonicthicknessmeasurementsand
thicknessmeasurementlocations(TML)arelistedintheShellPlateThickness
MeasurementstableinAppendixA.Ashellservicelifeevaluationperformedonallshell
coursesshowstheshellhasaremaininglifeofgreaterthan30yearsundercurrent
conditions.TheshellservicelifeevaluationisshownintheShellServiceLifeEvaluation
tableinAppendixA.Roundness,plumbness,peaking,andbandingoftheshellareall
withintheallowabletolerancesofAPIStandard653.Thetankappearstobestableand

does not appear to be in danger of overturning or buckling due to high winds or seismic conditions.

4. Tank Appurtenances

a. Gauging

ARONANATGisinstalledforelectronicgauging.Manualsamplingand
gaugingisaffordedthroughamanualsamplegauge.Themechanicaltape
levelgaugeisinsatisfactorycondition.
b. LevelAlarms
Thehighandhigh‐highlevelalarmassemblyismountedontheexterior
adjacenttotheverticalladderforindependentalarmswithaplatformfor
access.Theelectronicgaugingisequippedwithhighandhigh‐highleveland
lowandlow‐lowlevelalarms.
c. LadderandPlatforms
Thetank’sfixedroofisaccessiblebyaverticalladdermountedontheshell
ofthetank.
d. GroundingandBonding
Thetankhasagroundingcablearoundthecircumferenceofthetank.The
tankgroundingcableisexothermicallyweldeddirectlytotheshellatthree
locationsandisnotexothermicallyweldedtothegroundlugontheshell.
5. TankCoating
Theexteriorcoatingisanepoxywithpolyurethanetopcoat;theexteriorcoatingisin
satisfactorycondition.
6. TankPipingSystem
Fuelisreceivedandissuedbytrucks.
7. FireProtectionSystem
Thefiredepartmentprovidesfireprotection.
8. SecondaryContainment
40CFR112.7(c)statesthattheentiresecondarycontainmentsystem,“includingwalls
andfloor,mustbecapableofcontainingoilandmustbeconstructedsothatany
dischargefromaprimarycontainmentsystem...willnotescapecontainmentbefore
cleanupoccurs.”40CFR112.8(c)(2)and40CFR112.12(c)(2)statethatdikedareas
mustbe“sufficientlyimpervioustocontainoil.”Thepurposeofthesecondary
containmentrequirementistopreventdischarges,asdescribedin40CFR112.1(b);
therefore,effectivesecondarycontainmentmethodsmustbeabletocontainoiluntilthe
oiliscleanedup.Thesecondarycontainmentareaconsistsofanearthenfloorwith
slopedearthenwallsthathasaflexiblemembraneliner.Aninformalcontainment
evaluationwasconducted.Thecontainmentappearstobeofsufficientsizetocontaina
totaltanklossperUFC3‐460‐1,paragraph8‐14.2.1,“Thecontainmentareaneedsto
havesufficientcapacitytocontainthetankcontentsplusonefootoffreeboard.Ifthe
containmenthasthecapacitytocontainthetankcontentsplusonefootoffreeboard,
thecontainmentareaissufficient.”Thesecondarycontainmentbermwallhasacutout
forpiping;thusitdoesnotsatisfyNFPA30requirementsforanintermediatebermwall
heightofatleast18inches.Furthermore,thesecondarycontainmentdoesnothave
intermediatebermwallsbetweenthetanks.Thesecondarycontainmentareaappears
tobeproperlygradedtodrainwaterawayfromthetankinaccordancewithNFPA30.
C. FINDINGSANDRECOMMENDATIONS
Thefollowinginformationidentifiesthesignificantfindingsfoundduringthetank

inspection:

1. MANDATORYREPAIRSperAPI653,UFC3‐460‐01,orAW78‐24‐27Standards
Mandatoryrepairsrepresentitemsthatrequireimmediateattention,inorderto
preventimminentrisktosystemoperators,equipmentintegrity,ortheadjacent
environment.Thetankshouldremainoutofserviceuntiltheserepairsarecompleted.

a. None.

2. REQUIRED REPAIRS to Fully Comply with API 653 or Federal, State, and Local Codes

Recommendedrepairsrepresentitemsthatshouldbeaddressedinatimelymanner,in
ordertopreventfuturepotentialriskstosystemoperators,equipmentintegrity,orthe
adjacentenvironment.Theseitemsmayberequiredbyfederal,stateandlocalcodes,or
bymilitarycriteria.
a. SecondaryContainmentBermWalls
OBSERVATION:Thesecondarycontainmentbermwallhasacutoutforpiping;thusit
doesnotsatisfyNFPA30requirementsforanintermediatebermwallheightofat
least18inches.Furthermore,thesecondarycontainmentdoesnothaveintermediate
bermwallsbetweenthetanks.
CODEREFERENCE:NFPA30Section22.11.2.6.
RECOMMENDATION:Designandinstallintermediatewallsbetweenthetanksto
meettherequirementsofNFPA30.
b. SecondaryContainmentLiner
OBSERVATION:TheHDPElinerofthesecondarycontainmenthasthreetearsatthe
baseoftheissuelinepipesupportsandisnotabletocontaintheproductuntilthe
productiscleanedupasrequiredby40CFR112.1(b).
CODEREFERENCE:40CFR112.1(b).
RECOMMENDATION:RepairtheHDPEtearsatthebaseoftheissuelinepipesupports.
c. APIScaffoldSupports
OBSERVATION:TheroofdoesnothaveanyAPIscaffoldsupports.
CODEREFERENCE:UFC3‐460‐01,Table8‐1,Item(ff)andAPIStandard650,Section

5.8.8.

RECOMMENDATION: Install two (2) API scaffold supports.

3. RECOMMENDEDREPAIRSTOFULLYCOMPLYWITHUFC3‐460‐01,AW78‐24‐27
Standards,orasPartofRegularMaintenance
Recommendedrepairsrepresentitemsthatshouldbeaddressedinatimelymanner,in
ordertopreventfuturepotentialriskstosystemoperators,equipmentintegrity,orthe
adjacentenvironment.
a. LowSuctionLine
OBSERVATION:Thetankisnotequippedwitha4‐inchlowsuctionlineinaccordance
withAW78‐24‐27DrawingG.05andDrawingD.07DetailA3andUFC3‐460‐01Table
8‐1Item(v).Thelowsuctionlineminimizesthelossofproductbyallowingthetank
tobecompletelydrawndownformaintenanceandinspections.
CODEREFERENCE:AW78‐24‐27DrawingG.05andDrawingD.07DetailA3andUFC3‐
460‐01Table8‐1Item(v).
RECOMMENDATION:InstallalowsuctionlineinaccordancewithAW78‐24‐27
DrawingG.05andDrawingD.07DetailA3andUFC3‐460‐01Table8‐1Item(v).
b. IssueLineThermalRelief
OBSERVATION:Theissuelinedoesnothaveathermalreliefline.
CODEREFERENCE:UFC3‐460‐01,Section9‐2.1(h).
RECOMMENDATION:Installathermalrelieflineonthereceiptline.
c. ENRAFATGSystem
OBSERVATION:ThetankisnotequippedwithanENRAFATGsysteminaccordance
withAW78‐24‐27DrawingD.07Detail4andtheATGpolicypertheletterissuedby
theDefenseLogisticsAgency.Thetankdoesahaveaslottedstillingwellto
accommodatetheENRAFsystem.
CODEREFERENCE:AW78‐24‐27DrawingD.07Detail4.
RECOMMENDATION:InstallanautomatictankgaugeENRAFsystemtomeettheATG
policypertheletterissuedbytheDefenseLogisticsAgency.
d. VITOWaterandTemperatureSystem
OBSERVATION:Thetankisnotequippedwithawaterprobestillingwell(VITO
system)tomeettheATGpolicypertheletterissuedbytheDefenseLogisticsAgency.
CODEREFERENCE:AW78‐24‐27DrawingD.07Detail3.
RECOMMENDATION:Installanautomatictankgaugewaterprobe(VITOsystem)
andstillingwelltomeettheATGpolicypertheletterissuedbytheDefense
LogisticsAgency.
e. TankGrounding
OBSERVATION:Thetankhasagroundingcablearoundthecircumferenceofthetank.
Thetankgroundingcableisexothermicallyweldeddirectlytotheshellatthree
locationsandisnotexothermicallyweldedtothegroundlugontheshell.
CODEREFERENCE:AW78‐24‐27DrawingED.02Details1and2.
RECOMMENDATION:Reconfigurethegroundingcableswithexothermicweld
connectionstogroundlugsontheshell.
f. RoofPerimeterHandrail
OBSERVATION:Theroofdoesnothaveaguardrailaroundtheperimeteroftheroof.
Theroofisanumbrellatypedesignwithasteepslope.Roofaccessisasafetyhazard
forroutineinspectionsandmaintenance.Fallprotectionisrequiredinaccordance
withOSHAunlessaguardrailaroundtheperimeteroftheroofisinstalled.Accessis
requiredtotheroofcirculationvents\inspectionhatchestoinspectthefloatingroof
andsealsonanannualbasis.
CODEREFERENCE:AW78‐24‐27DrawingD.11Detail5.
RECOMMENDATION:Installaguardrailaroundtheperimeteroftheroof.
g. FacilityLabeling
OBSERVATION:Thetankdoesnothaveafacilitylabel.
CODEREFERENCE:UFC‐3‐460‐01Section2‐18.
RECOMMENDATION:Installafacilitylabelonthetank.

A-1 t min t nom t act t prev

D H

H c

G Y

T

S

E

L r

C r

I ut

I v

Y tmin

H DG

SE

Lr tact tmin

Cr Cr tprev tact Y Iut tact tmin Cr

Iv tact tmin

Cr

A-2 tprev tact tmin

A-3

Corrosion Rate

A-4

Thickness tmin

Thickness tmin

A-5

S max

A-6

S i | U i U i-1 U i+1

A-7

Fe et

Data Points

A-8

A-9

A-10

0.0

5.0

10.0

15.0

-3 -2 -1 0 1 2

Vertical Profile #1 Radius (inches)

0.0

5.0

10.0

15.0

-3 -2 -1 0 1 2

Vertical Profile #2 Radius (inches)

0.0

5.0

10.0

15.0

-3 -2 -1 0 1 2

Vertical Profile #3 Radius (inches)

0.0

5.0

10.0

15.0

-3 -2 -1 0 1 2

Vertical Profile #4 Radius (inches)

A-11

0.0

5.0

10.0

15.0

-3 -2 -1 0 1 2

Vertical Profile #5 Radius (inches)

0.0

5.0

10.0

15.0

-3 -2 -1 0 1 2

Vertical Profile #6 Radius (inches)

0.0

5.0

10.0

15.0

-3 -2 -1 0 1 2

Vertical Profile #7 Radius (inches)

0.0

5.0

10.0

15.0

-3 -2 -1 0 1 2

Vertical Profile #8 Radius (inches)

A-12

Appendix B

Engineering Drawings

1. Shell Layout

2. Fixed Roof Layout

3. Secondary Containment Layout

B-1

R em ar ks

/L eg en d:

O w ne r/

O pe ra to r:

In sp ec tio n F irm

D at e:

R ev is io n

N um be r:

R ev is io n D at e:

D ra w in g T itl e:

T an k D es cr ip tio n:

D ra w in g

N um be r:

In di an S pr in gs A

F B

In te rS pe c

LL

C

/2

9/

N /A

N /A

T an k #1 fa ci lit y

7) S

-1 S he ll

La yo ut

S ea m is th e fir st s ea m le ft of th e fir st m an ho le le ft of th e st ai rw ay in th e fir st s he ll co ur se v ie w in g fr om th e ou ts id e.

T he n um be r in th e up pe r le ft co rn er o f e ac h pl at e id en tif ie s th e pl at e by th e co ur se a nd po si tio n of th e pl at e in th at c ou rs e.

0G R

A P

H

IC

S C

A

LE

D im en si on s ar e in fe et

1-

A

B C D E F

A T

G

2-

1-

G H

2-

A

6"

M an ho le

B

H ig h Le ve l C on tr ol A ss em bl ie s C

H ig h

Le ve l C on tr ol

A ss em bl ie s

D

Lo w

L ev el C on tr ol A ss em bl ie s E

Lo w L ev el

C on tr ol

A ss em bl ie s

F

R ec ei pt

L in e G

W at er

D ra w -O ff H

W at er

D ra w -O ff

B-2 ar ks

/L eg en d:

O w ne r/

O pe ra to r:

In sp ec tio n F irm

D at e:

R ev is io n

N um be r:

R ev is io n D at e:

D ra w in g T itl e:

T an k D es cr ip tio n:

D ra w in g

N um be r:

In di an S pr in gs A

F B

In te rS pe c

LL

C

/2

9/

N /A

N /A

T an k #1

F ac ili ty

S -2

S he ll La yo ut

S ea m is th e fir st s ea m le ft of th e fir st m an ho le le ft of th e st ai rw ay in th e fir st s he ll co ur se v ie w in g fr om th e ou ts id e.

T he n um be r in th e up pe r le ft co rn er o f e ac h pl at e id en tif ie s th e pl at e by th e co ur se a nd po si tio n of th e pl at e in th at c ou rs e.

0G R

A P

H

IC

S C

A

LE

D im en si on s ar e in fe et

1-

I

J

O ve rf lo w V en t

2-

I -

4" M an ho le J

6"

Is su e Li ne

B-3 ar ks

/L eg en d:

O w ne r/

O pe ra to r:

In sp ec tio n F irm

D at e:

R ev is io n

N um be r:

R ev is io n D at e:

D ra w in g T itl e:

T an k D es cr ip tio n:

D ra w in g

N um be r:

In di an S pr in gs A

F B

In te rS pe c

LL

C

/2

9/

N /A

N /A

T an k #1

F ac ili ty

R -1

F ix ed R oo f L ay ou t

M ea su re d D ia m et er is fe et

F ix ed r oo f h as p la te s.

0.

0G

R A

P H

IC

S

C A

LE

D im en si on s ar e in fe et y x N W y x

N E y x

S E y xS W

X Y

O rie nt at io n

X Y

O rie nt at io n is in r ef er en ce to

P la n N or th

1 2 3 4

A

A

V en t B

B la nk

C

J- V en t

D

R oo f C irc ul at io n

V en t\I ns pe ct io n

H at ch E

C ap F

B la nk

G

0"

E le ct ro ni c

Le ve l I nd ic at or H

0" S am pl e G au ge

I -

4" M an ho le J

6"

P /V

V en t K

H at ch

D M

T G

B

G

H

I

J

K

F E

D

C

C

E

V er tic al

La dd er

B-4

C om pa ny

D ra w n

B y:

D at e:

R ev . N o.

S ca le

D ra w in g T itl e:

In di an S pr in gs A

F B

, N V

In te rS pe c

LL

C

/2

9/

N /A

N A

S ec on da ry C on ta in m en t L ay ou t

T an k

#1 (F ac ili ty

T an k #2

T an k #3 an k

#4 (F ac ili ty

P S

T

P R

T 6"

Is su e

Li ne

6" Is su

L in e

6" R ec ei pt e

4" R ec ei pt ru ck O ffl oa d/ Lo ad

T an k #6

A V

G A

S

T an k #5

A V

G A

S

T an k #1

D ie se l

T an k #2

D ie se l

T an k #3

G as ol in e

T an k #4

G as ol in e

3" AVGAS

3" Diesel

3" Gasoline 3" Vapor Recovery

D is pe ns or

D is pe ns or

D is pe ns or

D is pe ns or

1/ 2"

1/ 2"

1/ 2"

4"

P S

TT

ea r T ea r

T ea r

B-5

Appendix C

Engineering Data

1. Shell Settlement Measurements

2. Shell Plate Thickness Measurements

3. Shell Nozzle, Nozzle Reinforcement, and Insert Measurements

4. Fixed Roof Thickness Measurements

5. Accessway Measurements

C-1

C-2

C-3

C-4

C-5

C-6

C-7

Appendix D

API Standard 653 Checklists for Tank Inspections

1. Tank In-Service Inspection Checklist

D-1

D-2

D-3

D-4

D-5

D-6

D-7

D-8

D-9

Appendix E

Photographs

E-1

E-2

E-3

E-4

E-5

E-6

E-7

E-8

E-9

E-10

E-11

E-12

E-13

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