- API 510 - Pressure Vessel Inspection Code: In-service Inspection, Rating, Repair, and Alteration
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API 570 - Piping Inspection Code 
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API RP 572 - Inspection of Pressure Vessels 
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 API 573 - Inspection of Fired Boilers and Heaters 
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API RP 577 - Welding Processes, Inspection, and Metallurgy 
- API 579-1 - Fitness-For-Service
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API RP 580 - Risk-Based Inspection (RBI) 
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API RP 582 - Welding Guidelines for the Chemical, Oil, and Gas Industries 
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API 620 -  Design and Construction of Large, Welded, Low-Pressure Storage Tanks 
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API 625 - Tank Systems for Refrigerated Liquefied Gas Storage 
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API 650 -  Welded Tanks for Oil Storage 
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API 751 - Safe Operation of Hydrofluoric Acid Alkylation Units 
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API 936 - Refractory Installation Quality Control 
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API 2201 - Safe Hot Tapping Practices in the Petroleum and Petrochemical Industries