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TCI Services, Inc. Kevin Kupitz Levi Laughlin
Tank Inspection Decision Process Simplified
American Petroleum Institute API-‐653
“Tank Inspection, Repair, Alteration and Construction”
Steel Tank Industry STI SP001 5th Edition
“Standard for the Inspection of Above Ground Storage Tanks”
Federal, State, Local Regulations
Good Engineering Practices Best Practice
Industry Accepted Practices for ASTs
• Vertical, cylindrical, Above Ground, Closed and Open Top, Welded Storage Tanks in various sizes and capacities for internal pressure approximate of atmospheric pressure. • Max design temp of 200°F. • For storage of petroleum, petroleum products and other liquid products. • Field Erected
• Applies to the inspection of Above Ground Storage tanks. • These storage tanks include shop-‐fabricated tanks, field erected tanks and portable containers as defined in this standard, as well as their containment systems.
• For ASTs storing stable, flammable and combustible liquids at atmospheric pressure with a specific gravity less than 1.0. • For temperatures between ambient and 200°F.
Field Erected Tank
Vertical Tank
Shop-‐ Built Tank
Horizontal Tank
API-‐650 Name plate
Over 30’ Diameter
Over 50’ Tall
More than 50,000 gallons
Small Vertical Tank with manway
Rests on grade
On concrete pad
API 653
API 653
API 653
API 653
API 653
API 653
API 653
API-‐653
STI-‐ SP001
STI-‐ SP001
STI-‐ SP001
STI-‐ SP001
STI-‐ SP001
Certified API-‐653 Inspector
¡ Internal Inspection 20 Years
¡ External Inspection 5 Years
Owners inspector
¡ Periodic – [SPCC Plan] Monthly
¡ Visual § Roof § Shell § Nozzles § Appurtenances, etc.
¡ Ultrasonic Thickness § Shell § Roof (If needed) § Other (If needed)
¡ Final Report
¡ Initial Internal § (API Certified Inspector)
¡ Subsequent Internal Inspection Interval § (API Certified Inspector)
Within 10 years of Initial Service Date (Could go longer with safeguards) 20 Years (Can be 30 years with RPB 6.4.22.1 but need to check with state regulations first)
¡ Visual § Shell Internal and External Roof Internal and External Floor Internal
§ Appurtenances § Nozzles Etc.
¡ Ultrasonic Thickness § Shell § Roof § Nozzles § Repads § Floor § Other
¡ Magnetic Flux Leakage § Floor
¡ Vacuum Box § Floor
¡ Magnetic Particle § Floor/Shell
¡ External Inspections STI Certified Inspector ¡ Internal Inspections STI Certified Inspector ¡ Periodic Inspections Owners Inspector
¡ Categories (Risk Based) 1. Spill Control and CRDM 2. Spill Control and No CRDM 3. No Spill Control and No CRDM
¡ Spill Control § Remote Impounding § Secondary Containment dike/BERM § Secondary Containment AST § Secondary Containment System
¡ CRDM (Continuous Release Detection System) § RPB-‐ Release Prevention Barrier § Secondary Containment AST (Double Walls, Double Button) § Elevated AST
¡ Access to all sides ¡ Double wall ¡ Outside ¡ On concrete pad ¡ 3,000 gallon ¡ Built 1989 ¡ RPB/Double Wall ¡ SC No ¡ No tank info
¡ Outside ¡ On curbed concrete pad
¡ 5,000 Gallon ¡ Access to all sides ¡ Double wall ¡ Built 1999 ¡ SC/No ¡ RPB/Double Wall
¡ 4,000 gallon ¡ Built 1962 ¡ No other information ¡ SC/dike ¡ RPB/None
¡ 12,700 gallon ¡ No other information ¡ Single Bottom ¡ SC/Dike ¡ RPB/None
¡ Outside ¡ Secondary containment ¡ RPB/ Concrete Pad and Base
¡ 2500 gallon ¡ Built 1997 ¡ Field Erected?
¡ Outside ¡ ≤ 1,100 ¡ On legs ¡ SC/Yes ¡ RPB/access to all sides
¡ 12,000 gallon tank ¡ Insulated Tank ¡ Outside ¡ RPB/Access to all sides?
¡ SC/None
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