STANDARD DESCRIPTION ISA INSTRUMENT SOCIETY OF AMERICA ANSI American National Standards Institute BS British Standard API AMERICAN PETROLEUM INSTITUTE IEC INTERNATIONAL ELECTROTECHNICAL COMMISSION IS INDIAN STANDARD NEMA NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION NFPA NATIONAL FIRE PROTECTION ASSOCIATION OISD OIL INDUSTRY SAFETY DIRECTORATE IP INSTITUTE OF PETROLEUM
INSTRUMENTATION STANDARDS
Installation standards for all instruments API RP 551 Refinery Control Valves API RP 553 Control Valve Seat Leakage ANSI 70.2 Hydro static testing on control valves ANSI B 16.37 Specification for PVC insulated instrument cables BS-5308 Intrinsically safe apparatus in div 1 hazardous location NFPA 493 Specification for degrees of protection provided by enclosures IEC 60529