Felt this may of interest to support engineers.
The PE piping is gaining popularity among clients due to longer life
something from 25 to 50 years and even 100 years in case of urban
potable
water, Natural gas supply systems. All in the context of undersoil
constructions. Due to its flexibility it is layed down in underground
pits
without much care to be taken compared with GRE or metal or cement lined
pipes. Also sizes upto 1400mm are being manufactured by few
manufacturers. However this PE still has not reached India to my
knowledge, except Reliance - Jamnager. The attached file shows the
flexible restraint used in these piping systems to prevent axial
movement.
For information, EN12201-1/2/3/4, ISO9080 is a better method compared to
ASME 31.3M, ASTM2837 because EN recognises the RCP-Rapid crack
propagation
and SCG-slow crack growth in the long term application.
Regards,
Kannan.
No comments:
Post a Comment