Temperature Limit for Flanged Connection as per ASME B31.3
Temperature Limit for Flanged Connection as per ASME B31.3
(OP)
Hi
I would like to know if there is a temperature limit for using flanged connections (i.e. bolted connections) stated in B31.3 or B31.1. Or should I ask my question in this way...can I use flanged connection at temperatures greater than 500°C.
Best regards
Nikola
I would like to know if there is a temperature limit for using flanged connections (i.e. bolted connections) stated in B31.3 or B31.1. Or should I ask my question in this way...can I use flanged connection at temperatures greater than 500°C.
Best regards
Nikola





RE: Temperature Limit for Flanged Connection as per ASME B31.3
RE: Temperature Limit for Flanged Connection as per ASME B31.3
RE: Temperature Limit for Flanged Connection as per ASME B31.3
This was the policy of large AE firms such as Bechtel and Stone & Webster in the 1970s ....
I have rarely encountered a flanged joint on boiler Main Steam, HRH and CRH systems.
I would like to hear Pennpiper and other senior piping engineers on this issue
MJCronin
Sr. Process Engineer
RE: Temperature Limit for Flanged Connection as per ASME B31.3
Yes I'm aware that ASME B16.5 defines the pressure-temperature rating for different flange materials but I heard form one of my colleagues that ASME B31.3 (and maybe even B31.1) specifically states not to use flange connections over temperature of 470°C and that only welded connections are allowed.
I have a situation where I have to install an expansion joint at the end of the safety discharge line of the main steam line in a power plant. This discharge line will be connected through this expansion joint to the vent silencer on the roof of a boiler house building. We want to use flange connections for this expansion joint because we would like to be able to replace the joint if necessary.
RE: Temperature Limit for Flanged Connection as per ASME B31.3