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Exam (elaborations)

Ust Installation Testing Requrements And Cathodic Coatings Questions Perfectly

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UST INSTALLATION TESTING REQUREMENTS AND CATHODIC COATINGS QUESTIONS PERFECTLY

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UST gjInstallation gjTesting gjRequirements gjand gjCathodic
gjCoatings

Study gjonline gjgjatSingle-walled
1. Preinstallation gjhttps://quizlet.com/_be3l1n
gjtank gjTesting gj(Sec. gj3.2)

(Before gjplacing gjcomponents gjin gjExcavation): gjVisual gjInspection gjfor gjdamage
gjor gjholes

3 gjto gj5 gjpsig gjair/soap gjtest
3 gjpsig gjfor gj12 gjft gjdiameter gjor gjgreater gjtanks
gjAccording gjto gjmanufacturer's gjinstructions

2. Single-walled gjstorage gjtank gjTesting
Before gjPlacing gjthe gjSystem gjin gjService: gjTightness-test gjtank gjand gjpiping
3. Preinstallation gjDouble-walled gjtank gjtesting gj(Sec gj3.3,
gj3.5-7) gj(Before gjplacing gjcomponents gjin gjExcavation):

gjInspection

Max gjof gj5 gjpsig gjair/soap gjtest gjfor gjone gjhour
-Seal gjinner gjtank gjand gjdisconnect gjexternal gjair gjsupply
-Pressurize gjinterstice gjwith gjair gjfrom gjthe gjinner gjtank, gjmeasure gjinterstice gjpressure
gjwith gja gjthird gjgauge

-Soap gjand gjwatch gjfor gjbubbles gjor gjdrop gjof gjpressure gjon gjthe gjgauges
-First gjrelease gjpressure gjin gjinterstice, gjthen gjprimary gjtank
4. Preinstallation gjDouble-walledgT j ank gjwith gjliquid-filled gjintersticegjTesting:

gjCare- gjfully gjinspect gjinterior gjand gjexterior gjsurfaces gjof gjtank gjfor gjsigns gjof

gjleakage.

Check gjlevel gjof gjliquid gjin gjthe gjinterstice gjreservoir
5. Preinstallation gjDouble-walled gjTank gjwith gjVacuum gjon gjinterstice gjTesting:
gj- gjCheck gjto gjmake gjsure gjthe gjvacuum gjlevel gjin gjthe gjinterstice gjis gjwithin gjthe gjlimits

gjdesignated gjby gjthe gjmanufacturer

6. Double-walled gjstorage gjtank gjTesting gj(Sec gj3.6-7)
Before gjPlacing gjthe gjSystem gjin gjService: gjInspect gjtank gjinterstice gjor gjcheck
gjvacuum gjor gjliquid gjlevel

7. Preinstallation gjTesting gjof gjCompartmented gjTanks
Single-walled gjbulkheads: gjTest gjcompartments gjon gjdifferent gjsides gjof gjthe gjsame
gjbulk- gjhead gjat gjdifferent gjtimes

8. Preinstallation gjTesting gjof gjCompartmented gjTanks
Double-walled gjbulkheads: gjCompartments gjmay gjbe gjtested gjat gjthe gjsame gjtime
9. Tank gjdeflection gjInspection gj(Sec gj5.9)
After gjAssembly gjbut gjbefore gjBackfilling: gjMeasure gjtank gjdiameter gjbefore gjand
gjafter gjinstalling gjanchor gjstraps.

Acceptable gjdeflection gjis gjestablished gjby gjthe gjmanufactorer
10. Tank gjshell gjdeflection gjTesting
Before gjPlacing gjthe gjSystem gjin gjService: gjCompare gjbefore/after gjbackfilling
gjvertical gjdiameter. gjIf gjmeasurements gjdiffer, gjconsult gjmanufacturer's gjinstructions

gjfor gjallowable gjvariation
1 gj/
gj13

, UST gjInstallation gjTesting gjRequirements gjand gjCathodic
gjCoatings

11. Tank Study gjonline gjat gjhttps://quizlet.com/_be3l1n
gjdeflection gjis gjcaused gjby: gjInadequate gjsupport gjor gjover-tightening gjof

gjanchor gjstraps

-Improper gjbedding
-Voids gjin gjthe gjbackfill gjunder gjthe gjtank-bottom gjquadrant
-Poor gjcompaction gjof gjthe gjbackfill gjmaterial gjat gjthe gjtank gjsides
-Improper gjinstallation gjof gjanchor gjstraps
12. Slope gjof gjexcavation gjwalls gjis gjdetermined gjby:: gjSoil
gjconditions gjDepth gjof gjthe gjexcavation

Shoring
gjrequirements gjSafety

gjconsiderations

13. Excavation gjclearance gj45" gjfactor: gjA gjstraight gjline gjat gja gj45 gjdegree gjangle
gjfrom gjthe gjbottom gjof gjthe gjtank gjtangentially gjto gjthe gjside gjwill gjmeet gja gjhorizontal

gjline gjthat gjis gj5 gjft gjlong gjextending gjfrom gjthe gjbase gjof gjthe gjnearby gjfoundation

14. Filter gjfabrics gjare gjinstalled gjbetween:
This gjis gjto gjprevent gjthe gjbackfill gjfrom gjmigrating gjand gjdiminishing gjthe
gjsupport gjof gjthe gjtank gjor gjpaving: gjBackfill gjand gjadjacent gjunstable gjsoils, gjbogs,

gjswampy gjareas, gjor gjlandfills.

Separate gjdissimilar gjbackfill gjmaterials gjwith gjfilter gjfabric gjto gjprevent gjmixing
15. Foundation gjrequirements gjfor gjSteel gjunderground gjtank: gj-Bed gjof gjbackfill
gjmate- gjrial gj1-ft gjthick gjand gjextends gj1-ft gjbeyond gjthe gjends gjand gjsides gjof gjthe

gjtank

-At gjleast gj2-ft gjof gjbackfill gjb/w gjadjacent gjtanks gjand gjb/w gjtanks gjand gjexcavation
gjwalls.

-Use gjof gja gj(generally gjreinforced gjconcrete) gjbottom gjhold-down gjpad gjunder gja gjsteel
gjtank gjallows gjthe gjbed gjof gjbackfill gjto gjbe gjreduced gjto gj6-in gjinstead gjof gj1-ft

16. Foundation gjrequirements gjfor gjFiberglass gjTank: gj-Cover gjbottom gjof
gjexcavation gjor gjhold-down gjpad gjwith gja gjminimum gjof gj1-ft gjof gjbackfill

-Place gjbackfill gjalong gjbottom, gjsides, gjand gjend gjcaps gjof gjthe gjtanks gjby gjhand
gjshovel gjand gjtamping gjto gjprotect gjthe gjtank gjfrom gjdamage

17. Bottom gjhold-down gjpad: gjUsually gjconsists gjof gj8-in gjof gjreinforced gjconcrete
gjthat gjextends gjat gjleast gj18-in gjbeyond gjthe gjtank gjsides gjand gj1-ft gjbeyond gjeach

gjend.

Tank gjshould gjNEVER gjbe gjset gjdirectly gjon gjthe gjhold-down gjpad. gT j ank gjwill gjalways gjbe

gjset gjon gjbackfill gjmaterial.

18. Sand gjCompaction gjto gjprevent gjmovement gjor gjsettlement: gjPlace gjsand
gjbackfill gjinto gjthe gjexcavation gjin gj12 gjto gj18 gjinch gjlifts gjand gjcompact gjafter gjeach gjlift.

gjRepeat gjto gja gjlevel gjthat gjis gjat gjleast gj60 gjpercent gjof gjthe gjvertical gjheight gjof gjthe

gjtank

19. Cover gjover gjthe gjtank gjin gjAreas gjSubject gjto gjTraffic: gj-Consists gjof gjat gjleast
2 gj/
gj13

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