Also use ASME PCC-2 as a resource to help guide you. Article 2.2 speaks to external weld build up. I also urge caution if you plan on doing this with the vessel online, especially if it's the vacuum tower. You should do AUT across the entire area you plan on welding to check for any low spots...
Would this even fall under the geometric scope of VIII or NBIC? I'm fairly certain I've seen plugs seal welded into code vessels without the R stamp holder issuing any R1. And certainly couplings are listed on the U1, but there's no mention of the plug or connecting piping. And similarly if you...
I have been asked to endorse the installation of a gate valve with its stem below the horizontal plane. This valve will be in a header that is a common relief path for PSVs that relieve to a flare system. The aim of installing it in this fashion is to eliminate the hazard of the gate separating...
To add to what pd has to say: you should specifically look at UG-80 (C). Since you have made this out of pipe, you need to comply to the specification of the pipe. In your case ASTM A106. For 1.5" pipe the permissible variations in OD are ±1/64".
JJAV,
By using the allowable stresses from ASME B31.3 you have an inherent FOS. See 302.3.2 for the Bases for Design Stresses. The bottom line is if you are meeting the code you probably have an adequate FOS, but good engineering judgment should always be exercised. Remember that you are only...
