The query is what does the LT15 mean??
The design code is technically PD 5500 as it is a pressure vessel, however I am a piping engineer and given these are piping components I figured this may be the best place to get an answer.
I am currently undertaking a PD 5500 Annex D assessment on an...
I was reviewing a vessel drawing the other day and noticed that the nozzle necks and flanges were to A106-B LT15 and A105 LT15 respectively. As per table A1-M of ASME B31.3 the standard A106-B and A105 are suitable down to -29degC. My query is why have these been specified as LT15? Is it simply...
