Thank all of you for your input, we initially interpreted the code to view all stages of the welding process. We now see that you only have to VT the final weld.
Stanweld - Thank you for your help so far.
Just so this is clear;
B31.1 - VT is not performed on the welding operation but on all welds in the system after they are completed
B31.3 - VT is up to the inspector, for example if the inspector witnesses the fit up through Cap weld of a handful of...
Stanweld,
We decided to use B31.1 for heating and cooling because our company will operate the plants for long periods of time and they wanted to choose a code that would insure proper welding so there are no problems down the road. One Plant we built had 42" pipe headers and distribution for...
I originally posted this in another section before I saw this code section.
We (as Owners/operators of Combined heating and cooling plants) are trying to identify the "necessary" visual requirements for ASME B31.1 on a Chilled water, condenser water and hot water systems. We interpret the...
Metengr,
So its 100% VT of all welds in the system? Do you know if we were to RT or UT 5% of the welds does this eliminate the 100% VT?
136.4.2 states as necessary, and then later on states all welds. We had an inspector for both on site and offsite fabrication any time they were welding...
We (as Owners/operators of Combined heating and cooling plants) are trying to identify the "necessary" visual requirements for ASME B31.1 on a Chilled water, condenser water and hot water systems. We interpret the Code to require 100% Visual on all welds period (Table 136.4 in 2001 version of...
