Your Authorized Inspector may also provide some guidance. In my past experience in-service boiler hydro tests have been permitted at 90% MAWP where the normal operating conditions are less than 90% MAWP. Also, there have been allowances to test 90% the relief valve setting.
Refernce NB-23...
Hello,
I am hoping I can get some help understanding the joint design details required on a WPS using SMAW with a groove weld.
What details are required in terms of the root spacing, land, bevel, backing, etc?
QW-253 shows all nonessential, so does that mean that a WPS with an illistration of...
Hello,
I am wondering if I can get some assistance with reasoning on the nessesity to have accumulators registered and built to ASME VIII.
Although not stated in U-1(c)(2)(c), can they not be included given the function of the equipment?
The pipe size in use is 2" - 12" NPS STD. On occasion 14". The majority of the pipe run is 8".
The systems rarely have downtime longer than 1 week and that may happen once per year during a maintenace shut down. The
Good day,
I have been asked to supply reasons why SA53B - ERW pipe should not be used for hot oil (550F)applications. System max pressure is 125psi. As far as I can tell, the code does not show a reason to exlude it from this application, however the longitutal seam now has a .85 multipier...
Just a reminder; when calculating required thickness using pipe as a shell, you need to consider the pipe undertolerance outlined in UG-16(d). For ERW I believe it is 12.5%.
The 1.5' OD tube has a wall thickness of 0.105". There is some concern of burning throught the wall using a full penetration weld. We will have to do some practice welds using full penetration to get an idea of the feasability of this project.
An alternative is sockolets, but this also...
Hello,
I have a 32" OD Section VIII vessel where the Inlets and Outlets are NPS 10" and the Vents/Drain are NPS 3". Because of leak prevension we designed the nozzles to be welded to the piping system rather than use a flanged connection.
However the safety inspector is viewing the connection...
Thank you for the reply. I am well above the area required for reinforcement. I suppose it was the Fig. 304.3.3 that threw me off. The welds illistrated are simple fillets showing no penetration.
Is there a direction that I can look to find out the strngth of a simple fillet weld? I agree...
I am looking for an acceptable branch connection, where the branch is 1-1/2" OD and the run is 4-1/2" OD. Fig 328.5.4D illistrates 5 connections none of which suit my application. The latter part 328.5.4(a) states that 'the illistrations are typical and are not intended to exclude acceptable...