Question regarding ASME Sec I & IX Minimum Thickness. Client has tubes in the 0.050" thickness range (Original tubes 2" SA178A 0.175"). Client would prefer to Weld Metal Build Up (WMB) to repair tubes. All of our WPS/PQR are qualified to 0.0625" minimum thickness. Is there a clause in either...
Working on a Recovery Boiler (Designed to ASME Section 1) Received boiler feeder tubes that came with ASME Data Report P4A & have ASME PP mark applied. Its my opining that feeder tubes are Boiler Proper as-per ASME Section 1 (PREAMBLE) & should have ASME S Mark applied & a P4 Data report supplied.
My company is involved with a project to change out four superheater platens that failed a short time after boiler (150 MW Coal Fired) start up. The four superheater platens have multiple materials i.e. SA-213-T22 SA-213-T11 SA-213-T91 & SA-213-TP347H. Due to delivery issues for SA-213-T91 it...
My question is should code required RT be conducted before or after PWHT. My opinion is after as the weld is not complete until all of the essential variables of the WPS has been met which includes PWHT.
Developing GMAW (STT) Root & Hot Pass / SMAW Fill & Cap weld procedure my question is QW-403-10 does this essential variable apply to both processes. Please see below.
#1. Test Coupon 0.375" Root 0.125" x 1.1 = 0.1375" Fill & Cap 0.25" x 1.1 = 0.275" = Qualified base metal thickness...
ASME Code Case 2835, ASME Section VIII UG-84(g) (2) impact tests are no longer valid if they were completed prior to ASME Section VIII Div 1, 2013 edition. Is re-qualification require with new impact test?.
Need some clarification regarding welder testing to corrosion resistant overlay. We are going to be testing welders to ASME Sec IX using the FCAW process. WPS we are testing to is a multi layer E309LT-1 (F6) first layer & E312T-1 (F6) second layer on SA516-70 base material. Our client is...
Developing a Cooper/Nickel(Orbital)welding procedure Material is 4" Sch40 ASTM B466 UNS-C70600 Weld Filler ERCuNi(67). Shielding gas Argon 100% Back Purge Argon 100%. Applying hot pass is were we are having issues. Does anyone have any ideas as I have run out. Attached is a photo of the fit-up &...
Currently working on a LNG piping installation the pipe service is Cryogenic design MDMT is -321F. Materials are SA312-TP316L. Client has requested the completed lines be Pneumatic tested due to moisture concerns. Code is ASME B31.3. Can anyone recommend a minimum metal & test medium (Nitrogen)...
Working on LNG piping system (Cryogenic). Received pipe spools from another vendor upon inspection it was noted the piping had really bad deposits on the internal surface of the piping. It was decided to remove the deposits by light grit blasting which was very successful. Please note the blast...
Currently working on a cryogenic piping project. Received fabricated pipe spools from client. Please Note: Spools have been sitting in a storage facility for three years. Pipe spools were checked for dimension & damage when end caps were removed it was noticed there were multiple ID surface...
Setting up welder testing (Orbital P1 to P1 2.5" x 0.203") Root pass is showing smooth internal concavity (IC) ASME Sec IX does not reference (IC) is it relevant in evaluating the test coupon. Construction code to be used is ASME Sec 1 which allows (IC) as-per (PW-41.2.2). NDE is Phased Array we...
I am currently reviewing a P15E ASME Sec IX Weld Procedure. Need to know if you can weld out a 38mm thick SA-387-Gr-91-Cl-2 PQR test coupon using GTAW for the first 10 mm & then complete the test using GMAW. Then record only the 10mm GTAW Process on the WPS with GTAW only. Seems a little strange...
I am in a debate with a colleague regarding the PWHT for partial penetration tube to header welds. Code of construction is ASME Section 1 (Table-PW-39-4) Header is SA-335-P22 (P5A) 14" Sch 160 1.406" tube material is SA-213-T22 2" x 0.165" (P5A) Tube is inserted into a machined "J" type groove...
Developing weld procedure for GMAW-STT Root, & Hot pass, with FCAW Fill, & Cap. QW-403.10 states if test coupon is less than 0.5" Then table QW-451.1 (2T) does not apply base metal thickness range is only test coupon thickness + 10%. My question is as there are two welding process GMAW-STT &...
Developing weld procedure for sour service ASME Sec VIII-Div.1 Plate used for the test is SA-516-70 - SA-516-60 dual certified 3/8" thick. Process is FCAW. HAZ & Weld metal are passing with no issues. Base metal is failing @ -50F. Question I have is base metal Charpy Impact Testing required...
Developing Hard Facing Overlay weld procedure Chromium Carbide (CCO). Weld Rod is ARCTEC 661T. As-per ASME Sec IX Table QW-453 Note 3. Liquid Penetrant (PT) of the overlay surface is required. As we all know Stress relief cracking (CCO) hard facing weld overlay is expected with ARCTEC 661 T. I...
