QW 200.4 B allows for use of a root pass of say GTAW on .5" PQR to be combined with other PQRs with a higher thickness. Example would be you can combine a .5" GTAW all the way out PQR with a 1.5" SMAW all the way out I can create a WPS that is 5/8" to 8" utilizing GTAW for root pass in...
I would like to get the groups opinion on low temperature service requirements of b31.3. For the sake of this discussion I would like to leave out stress ratio exemptions so we can clearly discuss if impacts are required assuming at the min temps. listed in table A1.
Scenario 1
MDMT -20F, BM...
SFA 5.28 for example says the following regarding ER90S-B91 "B7.18 ER90S-B91 [ER62S-B91] and E90C-B91 [E62C-B91] (9Cr-1Mo, Nb, and V modified). The B91 type filler
metal is a direct replacement to the B9 electrodes in previous editions. The B91 type filler metal is a 9% Cr-1% Mo type
modified...
ASME Section IX
I Have a WPS that is qualified up to 8" but the hardness limit is slightly above client requirement. Would a retest on a 1/2" coupon for hardness testing allow me to maintain my upper limit of 8" when if I combine the PQRs in accordance with QW200.4?
When performing Impact testing in multiprocess PQRs in accordance with B31.3 or Section VIII does the root pass process require impact testing when deposited thickness excluding reinforcement is less than 2.5mm? Both codes have impact exemptions for material less than 2.5mm but would the root...
