effect of repeated operation cycles (pressurizing & depressurizing) on gas pipeline life

[engahmedbahgat]

Hello all,

referring to point of gas pipeline operation cycles , is there any code managing or talking about max number of pressurizing and depressurizing cycles to avoid fatigue effects on pipeline material ??

thank you in advance

 

[LittleInch]

Yes. The UK codes PD8010 and IGEM TD/1 have graphs and calculations for number of cycles. This varies with the cyclic stress being experienced. The higher the cyclic stress the lower the number of cycles.

Most transmission pipelines though will last more than 40 years.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.