Tank Standards and Part 4 SP001 Inspections

1Flammable Liquid Aboveground Storage Tank WorkshopFebruary 2, 2011February 2, 2011Ab d T k F b i ti St d dAboveground Tank Fabrication StandardsDana Schmidt, PEProject EngineerSteel Tank Institute, div. of STI/SPFA

Aboveground Storage Tank TypesAboveground Storage Tank Types

y Portable containers

y Shop-fabricated

y Field-erected

Portable containersPortable containers

Portable containersPortable containers 3 types of Portable Containers3 types of Portable Containers

1. Metal and plastic drums2. IBC (Intermediate Bulk Container)3. IM (Intermodal) or UN (United Nations)

portable tankportable tank

2Metal and plastic drumsMetal and plastic drums NFPA 30 Portable Container NFPA 30 Portable Container RequirementsRequirementsy Metal containers

Metal IBC, Metal portable tanks Conform to USDOT Hazardous Materials

Regulation 49 CFR*, ORP t 6 f UN R d ti th Part 6 of UN Recommendations on the Transport of Dangerous Goods

y *see http://www.access.gpo.gov/nara/cfr/waisidx_04/49cfr178_04.html

IBC (Intermediate Bulk Container)IBC (Intermediate Bulk Container) NFPA 30 Portable Container NFPA 30 Portable Container RequirementsRequirementsy Rigid nonmetallic IBC

USDOT Hazardous Materials Regulations, 49 CFR

Part 6 of UN Recommendations on the Transport of Dangerous Goods for Classes 31H1, 31H2, 31HZ1

IM or UN portable tankIM or UN portable tankShop Fabricated Aboveground Shop Fabricated Aboveground Storage Tanks StandardsStorage Tanks Standards

350,000 Gallons50,000 Gallons

IndoorVertical Fire Rated

Generator

Outdoor

Generator

Diked

AST StandardsAST Standardsfor Shop Fabricated Tanksfor Shop Fabricated Tanks

y API - American Petroleum Institute API 12F API 650 Appendix J API 650, Appendix Jy UL - Underwriters

Laboratories UL 142 UL 2085

API SpecificationsAPI Specifications

y API 12F Specification for Shop Welded Tanks for

Storage of Production Liquids Vertical, cylindrical onlyy API 650, Appendix J

Shop Assembled Welded Steel Tanks for Oil Storage

Vertical, cylindrical only

API 12FAPI 12F

y Table 1 Tank Dimensions includes: Capacity Outside diameter Heightg Connection details

API 12FAPI 12F

y Specifies steel thickness BOTTOM: 1/4 in. (except sump to be 3/8 in.) SHELL: 3/16 in. or 1/4 in. as requested by purchaser DECK (TOP): same as shell except 15 ft.-6 in. diameter tanks to be 1/4 in.

4A, B & C Dimensions areall provided in copy of API12 F Table 1 at back ofbinder.

Vent LineConnection

Overflow LineConnections

A

Fill LineConnection

Aux LineConnection API 12 F Tank

Layout

Note: All capacities are inbarrels not gallons.

(1 barrel = 42 gals.)24" x 36"Clean Out

PipelineConnection

BC

D

Drain LineConnection

API 12F continuedAPI 12F continued

y Emergency venting per Table C-1 based on tank dimensions given in Table 1y Pressure testing with air at 1 1/2 times

design pressure and apply soap solutiondesign pressure and apply soap solutiony Nameplate

Manufacturer, serial number, year built Nominal diameter, height, capacity Thickness of bottom, shell, deck Design pressure

API 12F PaintingAPI 12F Painting

y Metal primer requiredy Finish coating optional

API 650, Appendix JAPI 650, Appendix J

y Limited to 20 ft. diametery Steel thickness:

BOTTOM: 1/4 in. SHELLS: calculations required andSHELLS: calculations required and

Diameter Minimum

to 10.5 ft. 3/16 in.

over 10.5 ft. 1/4 in.

ROOFS: calculations requiredcone, dome and umbrella

API 650, Appendix J API 650, Appendix J Shell thicknessShell thickness

CAE

GHDt +=)000,21)(()1(6.2

t = minimum thickness G = liquid specific gravityD = nominal diameter E = joint efficiencyH = liquid level CA = corrosion allowance

Diameter Minimumto 10.5 ft. 3/16 in.over 10.5 ft. 1/4 in.

5API 650, App. J (continued)API 650, App. J (continued)

y Relies on Fire Codes for emergency venting requirementsy Pressure testing

diameters to 12 ft.=5 psigdiameters to 12 ft. 5 psig diameters over 12 ft.=2 to 3 psigy Nameplate

API 650, App. J, serial number, year built Nominal diameter, height, maximum capacity Design pressure, temperature, liquid level

API 650, App. J (continued)API 650, App. J (continued)

y Does include: Qualified welders requirement X-ray of some welds and magnetic particle

testing of nozzles

y Does not include: requirements for secondary containment requirements for painting

Underwriters LaboratoriesUnderwriters Laboratories

y UL 142 Steel Aboveground Tanks for Flammable and Combustible Liquids

y UL 2085 Protected y UL 2085 Protected Aboveground Tanks for Flammable and Combustible Liquids

y UL 2244 Aboveground Flammable Liquid Tank Systems

y Atmospheric Tank -0.5 to 1 psig

y Single wally Double wally Steel Diked Tanks

Open or Closed Top

UL 142ISBN 1-55989-385-0

Steel Aboveground Tanks forFlammable and CombustibleLiquids

y Carbon or stainless steel

y Stationary use only

Underwriters LaboratoriesUnderwriters LaboratoriesUL 142UL 142

y Capacities up to 50,000 gallons

y Specifies steel thicknesses Primary tank Secondary tank Shells and heads

UL 142 Steel thicknessUL 142 Steel thickness

6Underwriters LaboratoriesUnderwriters LaboratoriesUL 142UL 142y Performance testing required for:

Rectangular tanks Optional support designs Ladders and other optional tank accessoriespy Manufacturing tests required:

Air test at 1-1/2 to 5 psig with soap suds (based on tank type)

Hydrostatic pressure (with water)

STI AST Technologies (UL 142)STI AST Technologies (UL 142)


y Horizontal Cylindrical Steel thickness specified, including shell and heads Optional support design requires testing or calculations Diameters to 12 feet Air test at 5 psi Air test at 5 psi


y Vertical cylindrical Steel thickness specified Manufacturing air test at 1 1/2

to 2 1/2 psi Dished or conical roof required


y Rectangular Requires performance

testing to prove design Manufacturing air test at

18 Performance18.1 Hydrostatic strength test18.1.1 The tank shall be tested to demonstrate that the strength of the assembly and the welded joints are inaccordance with these requirements.

3 psi 18.1.2 The tank shall not rupture or leak when subjected to the Hydrostatic Strength Test, Section 40.18.2 Top load test18.2.1 After being subjected to the Top Load Test, Section 41, the tank shall then be subjected to the Leakage Test,Section 39, and shall not leak.

Open Diked Tanks (F911)Open Diked Tanks (F911)

7Diked Tanks with Rainshields Diked Tanks with Rainshields Closed Diked Tanks Closed Diked Tanks

UL 142 SupportsUL 142 Supports

y Maximum height of 12 inches

y Must withstand 2 times the weight of a times the weight of a full tank

y Design using calculations approved by UL

y Design using Performance Test

UL 142 WeldingUL 142 Welding

y Specifies weld joint designsy Does not require

qualified welders

UL 142 Venting RequirementsUL 142 Venting Requirements

y Normal vents Allow air to enter the tank when fluid is being

withdrawn and also exhausts air when the tank is being filled

Required on Primary tank (each compartment)

Size per Table 8.2 in UL 142

UL 142 Emergency VentingUL 142 Emergency Venting

y Emergency vents Prevent damage to the tank by allowing

excess pressure to be vented. They are designed to relieve excess pressure in the event of an emergency, such as a fire.

Required on x Primary tank andx Secondary tank

8UL 142 Emergency VentingUL 142 Emergency Ventingy Emergency vent device size

Wetted surface area x Horizontal cylindrical tanks = 75% of total surface

areax Vertical tanks = shell surface area (and bottom if Vertical tanks shell surface area (and bottom if

elevated)x Rectangular tanks = surface area of sides and

bottom Table 8.1 in UL 142 gives x Emergency vent capacity x Size

UL 142 PaintingUL 142 Painting

y No paint required on Stainless steel tanks

y One coat of paint required on Carbon qsteel tanks

UL 142 LabelUL 142 Label

y Will have one of these statements: Aboveground Tank for Flammable Liquids

Ab d T k f Fl bl L d S

UL Serial No._________

Aboveground Tank for Flammable Liquids on Supports Secondary Containment Aboveground Tank for Flammable

Liquids

Open Top Diked Aboveground Tank for Flammable Liquids Open Top Diked Secondary Containment Aboveground

Tank for Flammable Liquids

Closed Top Diked Aboveground Tank for Flammable Liquids

Closed Top Diked Secondary Containment Aboveground Tank for Flammable Liquids

Protected Tanky Integral Secondary

containment Part of the construction of

the tank, monitorable

y Insulationy Reduce heat in a fire

UL 2085ISBN 0-7629-0238-8

Protected Aboveground Tanks forFlammable and CombustibleLiquids

y Protection from physical damage

2 Hour2 Hour2000 Degree2000 Degree2000 Degree2000 DegreeExposureExposure

Vehicle Impact Resistance OptionVehicle Impact Resistance Option

9Ballistics Resistance OptionBallistics Resistance Option UL 2085UL 2085Tank ConstructionTank Constructiony Refer to UL 142

Steel thickness Welding Support designpp g Vents Emergency ventsy Must have provisions for monitoring

interstitial space

Cutaway of Insulated Tank Cutaway of Insulated Tank TechnologyTechnology Concrete EncasedConcrete Encased

Cylindrical TanksCylindrical Tanks Rectangular TanksRectangular Tanks

10

Vertical CylindricalVertical Cylindrical CARB Enhanced Vapor RecoveryCARB Enhanced Vapor Recovery

y Fireguard passed the Standing Loss Control portion of CARB EVR certification requirement in 2008 y CARB requirement of C equ e e t o

Emission Factor < 0.57/1000 gallons corresponds to a 90% reduction in emissions As compared to a single-wall tank without a

P/V vent.

UL 2085 LabelUL 2085 Label Vaulted Tanks Vaulted Tanks -- UL 2245UL 2245

11

Generator Base TanksGenerator Base Tanks

y UL 142 Special Purpose Tank

y Provides sturdy support for emergency power generatorpower generator

y Stores fuel supply

Small FieldSmall Field--erected tankserected tanks

API 650 API 650 Welded Steel Tanks for Oil StorageWelded Steel Tanks for Oil Storagey Shell courses

CAS

GHDtd

d += )1(6.2 td = design thickness (in.) D = nominal tank diameter (ft.) H = height of liquid (ft.) G = specific gravity CA = corrosion allowance (ft.) Sd = allowable stress (psi)

Sd

API 650 API 650 Welded Steel Tanks for Oil StorageWelded Steel Tanks for Oil Storagey Bottom plates

Minimum 1 projection beyond shell

12

API 650 Shell openingsAPI 650 Shell openings

y Reinforcement usually requiredy Spacing specified

API 650 tanksAPI 650 tanks

y Nameplate Manufacturer, serial number, year built Nominal diameter, height, capacity Thickness of bottom, shell, deck, , Design pressure

1Flammable Liquid Aboveground Storage Tank WorkshopFebruary 2, 2011February 2, 2011T k I ti STI SP001Tank Inspections per STI SP001Dana Schmidt, PEProject EngineerSteel Tank Institute, div. of STI/SPFA

Did you know?Did you know?

y There may be more regulated ASTs than USTs in the U.S.y Tanks under 300,000 gallons likely

represent 90% of the actual tank units in ep ese t 90% o t e actua ta u ts operationy STI estimates that there are over 4

million such tanks in existence today

Risk based inspectionsRisk based inspections

y Tank owners view - addition of safeguards to reduce or simplify expensive tank inspections makes good business sense. y Regulators view addition of safeguards egu ato s v ew a t o o sa egua s

minimize and eliminate releases.

Inspection based on installation Inspection based on installation type and its risk to environmenttype and its risk to environment

y Tanks offering greatest risk have significantly more g yinspectionsy Tanks with less

risk have less inspections

SP001 ScopeSP001 Scope

y Inspection of aboveground storage tanks Shop-fabricated

y Storing liquids Flammable or

Combustible Specific gravity 1.0

A bi 200F Field-erected Portable containers

Ambient to 200F Atmospheric pressure

AST Types in STI SP001AST Types in STI SP001

y Portable containers

y Shop-fabricated

y Field-erected

2Facilities with a mix of tanksFacilities with a mix of tanks Portable containerPortable container

y Greater than 55 gallons and not intended for fixed installation

3 types of Portable Containers3 types of Portable Containers

1. Metal and plastic drums2. IBC (Intermediate Bulk Container)3. IM (Intermodal) or UN (United Nations)

portable tankportable tank

ShopShop--Fabricated AST Fabricated AST (per SP001)(per SP001)yWelded metal AST fabricated in a

manufacturing facility ORy An AST without a nameplate with a

volume less than or equal to 50,000 vo u e ess t a o equa to 50,000 U.S. gallons

50,000 Gallons50,000 Gallons

IndoorVertical Fire Rated

Generator

Outdoor

Generator

Diked

3AST StandardsAST Standardsfor Shop Fabricated Tanksfor Shop Fabricated Tanks

y API - American Petroleum Institute API 12F API 650, Appendix J

y UL - Underwriters Laboratories UL 142 UL 2085

FieldField--erected AST erected AST (per SP001)(per SP001)

y Welded metal AST erected on-site where it will be used. y Limited to a maximum shell height of g

50 feet and a maximum diameter of 30 feety An AST without a nameplate that is more

than 50,000 U.S. gallons and a maximum shell height of 50 feet and a maximum diameter of 30 feet

SP001 Key termsSP001 Key terms

y Release Prevention Barrier (RPB)y Continuous Release Detection Method

(CRDM)

Release Prevention Barrier (RPB)Release Prevention Barrier (RPB)y Liquid containment

barrier Sufficiently

impervious Under the AST

y Diverts leaks toward the perimeter of the AST where they can be easily detected

Release prevention barrier ???Release prevention barrier ??? Continuous Release Detection Method Continuous Release Detection Method (CRDM)(CRDM)A means of detecting a release of

liquid through inherent design. It is passive because it does not require sensors or power to operate. Liquid releases are visually detected by facility releases are visually detected by facility operators. Tank with Release Prevention Barrier Secondary containment AST including double-

wall ASTs Elevated AST with release prevention barrier

4Tanks with CRDMTanks with CRDM Spill ControlSpill Control

y Prevent release of liquid to environmenty Includes:

Remote impounding Secondary containment dike/bermSecondary containment dike/berm Secondary containment AST Secondary containment system

Inspection typesInspection typesy Owner monthly inspections

Check operation of vents, coating, foundation

y Formal External inspections Certified inspector, but no entry

y Leak test one time test to determine if container leaking.

y Formal Internal inspections Entry into tank is necessary for full assessment

Owners checklistsOwners checklists

Table of Inspection SchedulesTable of Inspection Schedules

y Category 1 Spill control CRDM

y P Owner inspectiony E External by

y Category 2 Spill control

y Category 3 No safeguards

inspectory I Internal by

inspectory L Leak testing

Category 1Category 1

Double-wall Tank Double-bottom Tank

in Concrete Dike

5Category 2Category 2 Category 3Category 3

Risk Matrix conceptRisk Matrix concept

Tank Size Category 1 Category 2 Category 3

Shop built tanks

0 - 1100 P P P, E&L(10)

1101 -5,000

P P, E&L(10) [P, E&L(5), I(10)]or

More RiskMore Risk

More

More

[P, E(5) & L(2)]

5,001 -30,000

P, E(20) [P, E(10)& I(20)]or

[P, E(5) & L(10)]

[P, E&L(5), I(10)]or

[P, E(5) & L(1)]

30,001 -50,000

P, E(20) P, E&L(5), I(15) P, E&L(5), I(10)

Field erected P, E(5), I(10) P, E(5), I(10) P, E(5), I(10)

Portable containers

P P P **

e Risk

e Risk

Formal External and Formal External and Formal Internal InspectionsFormal Internal Inspectionsy Performed by Qualified Tank Inspector

STI Trained and Certified API Certified (with additional SP001

certification)

External inspectionsExternal inspections

y Containment areay Stairways, laddersy Normal vents

E

y UT of accessible areas, near base of tank (internal inspection if y Emergency vents

y Overfill alarmsy Fire valves

spect o problems found)

Internal inspectionsInternal inspections

y Check all external inspection itemsy UT of entire tank bottom

elevated tanks do not require entryy UT methodsy UT methods

UTT point measurements (15 points per sq. ft.) UTS full scan if problems found in UTT

6UT qualificationsUT qualificationsy UTT (15 points per sq. ft.)

Digital thickness meter Training of minimum one hour (thickness

ranges, couplants, transducer types)UTS (f ll )y UTS (full scan) Flaw detector Certified per ASNT TC-1A Personnel

Qualification and Certification in Nondestructive Testing

Leak tests by qualified personnelLeak tests by qualified personnel

y Gas pressure decayy Gas pressure with soap bubblesy Gas and soil tracersy Mass measurementy Mass measurementy Level measurementy Hydrostatic test

Suitability for continued serviceSuitability for continued servicey MIC corrosion Repair immediately. Next

inspection 2 yearsy Category 3 less than 75%, then repair. Next

inspection 5 yearsy Category 2 3 in a sq. ft. is less than 75%, or

l th 50% th i N t i ti 5 less than 50%, then repair. Next inspection 5 years

y Category 1 - 3 in a sq. ft. is less than 50%, or less than 25%, then repair. Next inspection 5 years

MIC corrosionMIC corrosion

Other tank damageOther tank damage

y Firey Natural disaster flooding, windsy Excessive settlementy Overpressurey Overpressurey Cracking of weldsy Leak

AST Inspector CertificationAST Inspector Certification

y Meet experience and education requirementsy Attend seminary Pass examy Pass examy Visual acuity exam

7Experience and educationExperience and education

y Bachelor of Science degree and at least one year of experience, OR

y 2 year certificate in

y Related experience Construction of,

operation of, or inspection and

engineering or technology and at least two years of experience, OR

y High School diploma or equivalent and at least three years of experience.

maintenance of steel storage tanks, pressure vessels, or steel piping systems.

Also acceptable is engineers developing SPCC plans

Seminar topicsSeminar topics

y Tank Fabrication Standardsy Corrosion Basics

y Fire codesy Valves and Pipingy Level Monitoring

y Inspection Techniquesy Regulatory

Requirements

gy Electrical Issuesy Hands on

Demonstrations

ExamExam 2 sections:x Open bookx AST Standardsx Corrosionx Closed bookClosed bookx Inspection, safety

80% total with no section under 70%

Inspection Schedule/TableInspection Schedule/TablePPPeriodic Inspection by Owner Periodic Inspection by Owner EE--External Inspection by Certified Inspector External Inspection by Certified Inspector II--Internal Inspection Internal Inspection LL--Leak TestLeak Test

Size, Gallons Category 1Category 1 Category 2 Category 3

Shop built tank

0 - 1100 P P P, E&L(10)

1101 -5,000

P P, E&L(10) [P, E&L(5), I(10)]or

[P E(5) & L(2)][P, E(5) & L(2)]

5,001 5,001 --30,00030,000

P, E(20)P, E(20) [P, E(10)& I(20)]or

[P, E(5) & L(10)]

[P, E&L(5), I(10)]or

[P, E(5) & L(1)]

30,001 -50,000

P, E(20) P, E&L(5), I(15) P, E&L(5), I(10)

Field Erect Tank P, E(5), I(20) P, E(5), I(20) P, E(5), I(20)

Portable Containers

P P P **

8Inspection Schedule/TableInspection Schedule/TablePPPeriodic Inspection by Owner Periodic Inspection by Owner EE--External Inspection by Certified Inspector External Inspection by Certified Inspector II--Internal Inspection Internal Inspection LL--Leak TestLeak Test

Size, Gallons Category 1 Category 2 Category 3Category 3

Shop built tank

0 - 1100 P P P, E&L(10)

1101 -5,000

P P, E&L(10) [P, E&L(5), I(10)]or

[P E(5) & L(2)][P, E(5) & L(2)]

5,001 5,001 --30,00030,000

P, E(20) [P, E(10)& I(20)]or

[P, E(5) & L(10)]

[P, E&L(5), I(10)][P, E&L(5), I(10)]oror

[P, E(5) & L(1)][P, E(5) & L(1)]

30,001 -50,000

P, E(20) P, E&L(5), I(15) P, E&L(5), I(10)


Portable Containers

P P P **


Size, Gallons Category 1Category 1 Category 2 Category 3

Shop built tank

0 - 1100 P P P, E&L(10)

1101 -5,000

P P, E&L(10) [P, E&L(5), I(10)]or

[P E(5) & L(2)][P, E(5) & L(2)]

5,001 5,001 --30,00030,000

P, E(20)P, E(20) [P, E(10)& I(20)]or

[P, E(5) & L(10)]

[P, E&L(5), I(10)]or

[P, E(5) & L(1)]

30,001 -50,000

P, E(20) P, E&L(5), I(15) P, E&L(5), I(10)


Portable Containers

P P P **



Shop built tank

0 - 1100 P P P, E&L(10)

1101 -5,000

P P, E&L(10) [P, E&L(5), I(10)]or

[P E(5) & L(2)][P, E(5) & L(2)]

5,001 -30,000

P, E(20) [P, E(10)& I(20)]or

[P, E(5) & L(10)]

[P, E&L(5), I(10)]or

[P, E(5) & L(1)]

30,001 -50,000

P, E(20) P, E&L(5), I(15) P, E&L(5), I(10)


Portable Portable Containers Containers

P P P **P **

Category 3 Portable containersCategory 3 Portable containers** Owner shall either discontinue use of portable

container or have DOT tested Plastic container - 7 years Steel container - 12 years

S i l S l i 17 Stainless Steel container - 17 years

9Inspection Schedule/TableInspection Schedule/TablePPPeriodic Inspection by Owner Periodic Inspection by Owner EE--External Inspection by Certified Inspector External Inspection by Certified Inspector II--Internal Inspection Internal Inspection LL--Leak TestLeak Test


Shop built tank

0 - 1100 P P P, E&L(10)

1101 -5,000

P P, E&L(10) [P, E&L(5), I(10)]or

[P E(5) & L(2)][P, E(5) & L(2)]

5,001 -30,000

P, E(20) [P, E(10)& I(20)]or

[P, E(5) & L(10)]

[P, E&L(5), I(10)]or

[P, E(5) & L(1)]

30,001 30,001 --50,00050,000

P, E(20) P, E&L(5), I(15) P, E&L(5), I(10)P, E&L(5), I(10)


Portable Containers

P P P **


Size, Gallons Category 1 Category 2Category 2 Category 3

Shop built tank

0 - 1100 P P P, E&L(10)

1101 -5,000

P P, E&L(10) [P, E&L(5), I(10)]or

[P E(5) & L(2)][P, E(5) & L(2)]

5,001 5,001 --30,00030,000

P, E(20) [P, E(10)& I(20)][P, E(10)& I(20)]oror

[P, E(5) & L(10)][P, E(5) & L(10)]

[P, E&L(5), I(10)]or

[P, E(5) & L(1)]

30,001 -50,000

P, E(20) P, E&L(5), I(15) P, E&L(5), I(10)


Portable Containers

P P P **

10



Shop built tank

0 - 1100 P P P, E&L(10)

1101 1101 --5,0005,000

P P, E&L(10) [P, E&L(5), I(10)][P, E&L(5), I(10)]oror

[P E(5) & L(2)][P E(5) & L(2)][P, E(5) & L(2)][P, E(5) & L(2)]

5,001 -30,000

P, E(20) [P, E(10)& I(20)]or

[P, E(5) & L(10)]

[P, E&L(5), I(10)]or

[P, E(5) & L(1)]

30,001 -50,000

P, E(20) P, E&L(5), I(15) P, E&L(5), I(10)


Portable Containers

P P P **

Insulated ASTInsulated AST

y Remove insulation where moisture or product collectsy If vapor barrier damaged, remove sections

of insulationo su at o


Size, Gallons Category 1Category 1 Category 2 Category 3Category 3

Shop built tank

0 - 1100 P P P, E&L(10)

1101 1101 --5,0005,000

PP P, E&L(10) [P, E&L(5), I(10)][P, E&L(5), I(10)]oror

[P E(5) & L(2)][P E(5) & L(2)][P, E(5) & L(2)][P, E(5) & L(2)]

5,001 -30,000

P, E(20) [P, E(10)& I(20)]or

[P, E(5) & L(10)]

[P, E&L(5), I(10)]or

[P, E(5) & L(1)]

30,001 -50,000

P, E(20) P, E&L(5), I(15) P, E&L(5), I(10)


Portable Containers

P P P **

UST as AST

11

RepairsRepairs

y Per STI Standard SP031 covers shop-fabricated tanks onlyy Qualified personnel for repairs

Facility that manufactures STI, UL, etc. tanksFacility that manufactures STI, UL, etc. tanks ASME Section IX welders AWS D1.1 welders

Shop-Fabricated Typical Bottom or Head

Field-FabricatedTypical Bottom

Special Consideration in Special Consideration in ShopShop--Fabricated TanksFabricated Tanks

Standard OrganizationStandard Organization

y 1.0 Scopey 2.0 Definitionsy 3.0 Safety

Considerations

y 5.0 Materials and Weldingy 6.0 Modificationsy 7.0 Repairs

y 4.0 Personnel Qualifications Repair & Inspection

y 8.0 Testing

ScopeScope

y Aboveground Tanks Flammable & Combustible Atmospheric Built to national standardsyWhat is not included?

Underground Tanks API tanks Bolted and Riveted Tanks

Personnel QualificationsPersonnel Qualifications

y Repair/Modify Manufacturer of Labeled/Listed Tanks ASME Section IX AWS

Tester Final Inspection

STI SP001 API 653 Manufacturer of labeled/listed tanks

12

Modifications SectionModifications Section

y Items New pipe connectionsx Reinforcing plate when

pipe >2

ManwaysManwaysx Reinforcing plate when

below liquid level

New second bottomx Knuckle at bottom

Repairs at knuckleRepairs at knuckle

y Limited repairs in knuckle areay Otherwise, replace

the bottom or head.

Shell RepairShell Repair

y Lap Weld Patch plates Shape Over existing welds

y Weld Spacingy Plate Inserts

Bottom RepairsBottom Repairs

T Joints and KnucklesT Joints and Knuckles TestingTesting

y Testing of all repairs and modifications requiredy Significant repair examples (requires tank

pressure test)p essu e test) Complete replacement of bottom Patch plate greater than 12 square feet Openings greater than 12 inches diametery Final inspection by SP001 inspector or

tank manufacturer

Documents

Tank Standards and Part 4 SP001 Inspections