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Hi Guys,
I am new to this forum but hoping someone can help me out.
I am trying to spec out a solenoid valve for fuel isolation on a gas turbine. The fuel media is heated and to a high pressure & bore size. The issue I have is that the types of product that I am looking at do not quantify the standards which they adhere to within the CSA Canada codes.
Many specifications state "certified to CSA for Class I, Division 1, Groups C & D, T3 and Division 2, Groups A, B, C, & D. Now from my understanding, this typically is conforming to 'general purpose valves' within CSA 139.
part of CSA 139 states for safety shut off valves, they must also conform to CSA 6.5 C/I (ANSI Z21.21).
My question is:
Do valves for turbine fuel isolation have to conform to this separate annex CSA 6.5 C/I (ANSI Z21.21)?
I am not looking for direction to a specific manufacturer but clarification of the requirement for such application/standards. The additional CSA 6.5 C/I (ANSI Z21.21) looks like it is for burners rather than turbines but it is quite ambiguous and no manufacturers of shutoff valves advise the additional standard so I assume even in a safety fuel shutoff valve they do not conform?
The additional test requirements for CSA 6.5 C/I (ANSI Z21.21) look like high cycle fatigue test specs (100,000 cycles) but are they really relevant to applications which are in such low demand (1 cycle every few months/a year)?
Clarification around this issue is much appreciated.
Many thanks,
GT_Brock
I am new to this forum but hoping someone can help me out.
I am trying to spec out a solenoid valve for fuel isolation on a gas turbine. The fuel media is heated and to a high pressure & bore size. The issue I have is that the types of product that I am looking at do not quantify the standards which they adhere to within the CSA Canada codes.
Many specifications state "certified to CSA for Class I, Division 1, Groups C & D, T3 and Division 2, Groups A, B, C, & D. Now from my understanding, this typically is conforming to 'general purpose valves' within CSA 139.
part of CSA 139 states for safety shut off valves, they must also conform to CSA 6.5 C/I (ANSI Z21.21).
My question is:
Do valves for turbine fuel isolation have to conform to this separate annex CSA 6.5 C/I (ANSI Z21.21)?
I am not looking for direction to a specific manufacturer but clarification of the requirement for such application/standards. The additional CSA 6.5 C/I (ANSI Z21.21) looks like it is for burners rather than turbines but it is quite ambiguous and no manufacturers of shutoff valves advise the additional standard so I assume even in a safety fuel shutoff valve they do not conform?
The additional test requirements for CSA 6.5 C/I (ANSI Z21.21) look like high cycle fatigue test specs (100,000 cycles) but are they really relevant to applications which are in such low demand (1 cycle every few months/a year)?
Clarification around this issue is much appreciated.
Many thanks,
GT_Brock