American Petroleum Institute (API)

The American Petroleum Institute (API) is an associated organization of various industries in the United States engaged in petroleum and natural gas. API currently has distributed more than 200,000 technical pieces standards to all over the world. The purpose of these standards is to help its users in an effort to increase efficiency and savings in the operation of their businesses, by still referring to legislation, safeguarding the safety and health of the community, and not forgetting to preserve the environment. In addition to producing standards, codes and implementation guidelines relating to piping, tanks, vessels, and equipment in the oil and gas industry, the APL also provides instructions on maintenance matters, inspections of equipment that is working, evaluating components is experiencing a decline in ability, also referred to as “fitness-for-service” or “for-purpose fitness.” Although it is recognized that most documents produced by the API are for consumption in the oil and natural gas industries, many standards Relevant API and can be used for the petrochemical industry in general.

Some API Standards that are often used in Engineering are as follows:

5L Specification for Line Pipe

510 Fired Heater Tubes

520 Sizing, Selection, and Installation of Pressure-Relieving Devices in Refineries.

526 Flanged Steel Pressure Relief valves

560 Fired Heaters for General Refinery Service

570 Piping Inspection Code: Inspection, Repair, Alterations, and Rerating of In-Service Piping Systems

574 Inspection of Piping, Tubing, Valves, and Fittings

577 Welding Inspection

594 Check Valves: Flanged, Lug, Wafer, and Buttwelding

598 Valve Inspection and Testing.

602 Compact Steel Gate Valves-Flanged, Threaded Welding and Extended Body End.

603 Corrosion Resistant Gate Valves

606 Compact Steel Gate Valve, Extended Body

607 Testing of Valves – Fire Type-testing Requirement

608 Metal Ball Valves, Flanged, and Butt-Welding end.

609 Butterfly Valves: Double Flanged, Lug and Water-type.

610 Centrifugal Pumps for Petroleum, Petrochemical and Natural Gas industries

611 General Purpose Steam Turbines for Refinery Service

612 Petroleum, Petrochemical and Natural Gas industries -Steam Turbines – Special Purpose Applications

616 Gas Turbines for the Petroleum, Chemical, And Gas Industry Services.

617 Centrifugal Compressors for Petroleum, Chemical, and Gas Service industries.

618 Reciprocating Compressors for Petroleum, Chemical, and Gas Industries.

619 Rotary type positive displacement Compressors for Petroleum, Chemical and Gas Industry.

620 Design and Construction of Large, Welded, Low-Pressure Storage Tank

650 Welded Steel Tanks for Oil Storage.

651 Cathodic Protection of Aboveground Storage Tank

661 Air-Cooled Heat Exchangers for General Refinery Service.

662 Plate Heat Exchangers for General Refinery Services.

674 Positive Displacement Pumps — Reciprocating

675 Positive Displacement Pumps — Controlled Volume

676 Positive Displacement Pumps – Rotary

686 Machinery Installation and Installation Design

ASME CODE

B16.1 Cast Iron Pipe Flanges

B16.3 Valve-Flanged, Threaded, and Welded

B16.4 Cast lron Threaded Piping

B16.5 Pipe Flanges and Flanged Fittings, NPS 1/2 – NPS 24.

B16.9 Factory made wrought steel buttwelding fittings

B16.10 Face to Face and End to End Dimension of Valves

B16.11 Socket-Welding and Threaded Forged Steel Fittings

B16.l2 Cast lron threaded drainage fittings

B16.14 Ferrous Pipe plug, bushings and locknuts with pipe Thread

B16.20 Metallic Gaskets for pipe flanges — ring joint, spiral Wound, and jacketed

B16.21 Non Metallic Flat Gaskets for Pipe Flanges

B16.25 Buttwelding ends

B16.28 Wrought steel buttwelding short radius elbows and Return

B16.34 Valves, Flanged, Threaded and Welding Ends

B16.36 Orifice Flanges

B16.38 Large metallic valves for gas distribution, manually operated, NPS 2 % through l2, l25 ps_ig maximum.

B16.40 Manually operated thermoplastic gas shutofts and Valves in gas distribution systems

B16.47 Large Diameter Steel Flanges NPS 26-60

B16.48 Steel line blinds

B18.2.1 Square and Hex Bolts and Screws (inch series)

B18.2.2 Square and Hex Nuts (inch series)

B18.2.2.1 Plain Washer

B31.1 Power Piping

B31.3 Process Piping

B31.4 Liquid Transportation System for Hydrocarbons, Liquid Petroleum Gas, Anhydrous Ammonia and Alcohol.

B31.8 Gas Transmission and Distribution Systems

B36.10 Welded and Seamless Wrought Steel Pipe

B36.19 Stainless Steel Pipe

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