CODES AND STANDARDS USED IN PIPING ENGINEERING

WHY IT IS REQUIRED ?

• Selection of proper material and detail out the material specification.
• Standardization can and does reduce cost, inconvenience and confusion that result from unnecessary and undesirable difference in systems.
• One of main objective of each code is to ensure public and industrial safety.

DEFINITIONS:-
Industry standard are published by professional societies, committees and trade organizations. It can be broadly classified into the following categories......

• CODE
• STANDARDS
• RECOMMENDED PRACTICES

CODE :-
A group of general rules r systematic procedures for design, fabrication, installation and inspection prepared in such a manner that it can be adopted by legal jurisdiction and made into law.

STANDARDS :-
Documents prepared by a professional group or committee which are believed to be good and proper engineering practices and which contain mandatory requirements.

RECOMMENDED PRACTICES:-
Documents prepared by a professional group or committee indicating good engineering practices but which are optional.

STANDARDS FOR PIPING DESIGN:-

• ASMEB31.1: Powerpiping
• ASME B31.2: Fuel Gas piping.
• ASME B31.3: Process piping.
• ASME B31.4: Pipeline Transportation system for liquid Hydrocarbon and other liquids
• ASMEB31.5: Refrigeration piping.
• ASME B31.8: Gas Transmission and Distribution piping.

STANDARDS FOR PIPING COMPONENTS:-

PIPES:

• B36.10M: Welded and Seamless Wrought Steel Pipes
• B36.19M: Stainless Steel Pipes

Flanges:-

• B16.5: Steel Pipe flanges and flanged fittings
• B16.47: Large diameter steel flanges
• B16.48: Steel Line Blanks
• API 5L: Line Pipe.

FITTINGS:-

• B 16.9: Factory Made Wrought Steel Butt- Welding Fitting
• B 16.11: Forged Steel Fittings, Socket-Welding & Threaded

VALVES:-

• API 594: Wafer And Wafer Lug And Double Flanged Check Valve
• API 599: Metal Plug Valves-Tanged & Welding Ends
• API 600: Steel Gate Valves - Flanged and Butt Welding Ends, Bolted and Pressure Seal Bonnet
• API 6D: Pipe line valves, End closures,Counselors end swivels
• API 593:Ductile Iron Plug Valves- Flanged ends.
• API 600: Steel gate valves.
• BS 1414: Steel Wedge Gate Valves flanged Cud Butt Welding Ends)
• BS 1868: Steel Check Valves) flanged & Butt Welding Ends)
• BS 1873: Steel Globe, Globe stop cud Check Valves )Flanged & butt welding ends.
• BS 5351: Steel Ball Valves
• BS/EN 593: Specification for Butterfly valves
• BS 5352:Steel Wedge Gate, Globe and Check Valves 50mm and Smaller
• BS 5353:Steel Plug Valves
• Bd 6364:Valves For Cryogenic Services.

GASKETS:-

• B 16.53:Metallic Gaskets for Steel pipe flanges, ring joint, Spirel-Wound, and gasketed.