I have designed a vessel with nozzle calculations in accordance to Appendix 1-10. I used Compress to design the vessel.
Authorized Inspector has requested UG-37 calculations. My interpretation of UG-36(a) is that UG-37 calculations are only required when you use Appendix 1-7. This stance...
I am attempting to place a nozzle in a flat head. The size of the hole is greater than half the diameter of the head. Per Code, calculations should be done per Appendix 14. However, in Compress I just receive a error that nozzle size is greater than D/2. Is there any way to invoke Appendix 14...
We welded some SA333 Gr.6 pipe and subsequently performed post weld heat treatment at 1100F per UCS-56. The actual temperature maxed out at just under 1175F. The material test reports for the material show that it was tempered at a minimum temperature of 1050F. We have a customer that is...
We are having trouble locating 3/16" thick plate material in SA516 Gr.60. Can we purchase 1/4" thick material and machine it down to 3/16" thick? Impact test requirements are the same for both thicknesses, material properties are the same. I see no reason why not, but am I missing something?
Weldtek,
The thinner plate is impact tested because it has the greater chance of not qualifying? If it meets the requirements, it is assumed the thicker plate will also meet the requirements?
The maximum thickness qualified by the 3/16" thick plate would be 3/8". The minimum thickness...
UG-84(h)(2)(c) states that the test plate material must meet the minimum notch toughness requirements of UG-84(c)(4). The only way to verify this is to purchase impact tested materials or have impact testing performed on the material after it is purchased?
Thats my reasoning for using a P-No.1 Grp. 1 to P-No.1 Grp. 2, to qualify the various combinations.
I understand that the HAZs and the weld metal will be impact tested. SA516 Gr.70N is an impacted tested material. SA36/CSA G40.21 Gr.44W is not.
I would like to know if this matters or not for the...
Thank you for your responses.
For this procedure, we are looking to qualify P.1 Grp.1 material to P.1 Grp.2 material.
SA-516 Gr.70 is the P.1 Grp.2 material we will most likely use.
Can we use SA36/CSA G40.21 Gr.44W as the P.1 Grp.1 material even though it is not impact tested and we will be...
Does QW-403.6 determine the minimum thickness value due to the requirement of impact testing? If impact tests are not required, do I use QW-451.1 for both the minimum and maximum thickness values?
I am preparing a new WPS and PQR for P1 materials using GMAW with impact testing. These are prepared in accordance with ASME Sec.IX.
My question concerns the base metal thickness range qualified. I would like to use the same procedure and PQR to qualify material that is 0.154" thick up to 1"...
I am trying to model a steam jacket in Compress, but am having no luck. In this particular case we are using NPS24 pipe with plates at each end to jacket NPS18 pipe. The NPS18 pipe will have nozzles that will project thru the jacket. Any help would be greatly appreciated. Thanks.
