frequency stress relive after install tower.
frequency stress relive after install tower.
(OP)
hi all
we have a tower that include lethal content.
it stress relive & test & install in field.
we need 2 new nozzel .can we make hole in tower & weld
nozzels & local stress relive?
the tower material is as per nace MR-0175.
is hydrotest mandatorey ?
please tell me adress of Code for it.(ASME Sec VIII Div.1)
thanx all.
we have a tower that include lethal content.
it stress relive & test & install in field.
we need 2 new nozzel .can we make hole in tower & weld
nozzels & local stress relive?
the tower material is as per nace MR-0175.
is hydrotest mandatorey ?
please tell me adress of Code for it.(ASME Sec VIII Div.1)
thanx all.





RE: frequency stress relive after install tower.
1. Is the tower a new installation (never been used) or has it been in service, and you decided you needed two additional nozzles?
2. If this tower has been in service, are you under a Jurisdiction that requires or mandates the National Board Inspection Code (NB-23)? This is a Code that deals with inspection, repair and alteration of pressure containing objects that are in-service.
The answers to 1 and 2 will determine if you need to hydrotest the tower after installation of two new nozzles. Yes, you can weld and locally post weld heat treat two new nozzles for the tower using the guidelines in ASME Section VIII, Div 1.
RE: frequency stress relive after install tower.
You can purchase WRC Bulletins online at http://www.forengineers.org
RE: frequency stress relive after install tower.
thanx 4 ur good answer.
the tower is new installed & only pacivated.
the mandatory Code is ASME.
lethal content is it`s service.
is Hydrotest mandatory after install new nozzels?
best regard.
RE: frequency stress relive after install tower.