Recent content by GemmellG

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.

Yes I do now

Can you elaborate thanks.

Is there any reference to material certs MTR in above mentioned code if they are or are not required

Yes It’s Lloyd’s out of China AI who classed work as an Alteration

Guys thanks for the quick response. As-per information below SA-213-TP347H has a higher maximum allowable stress value than SA-213-T91. NBIC has no reference to tensile strength nor does ASME Sec 1 when calculating tube min wall. So can you let me know if I am missing something. Again thanks for...

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...

David thanks found what I was looking for. Will do search in the future.

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.

Thanks for the quick response

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...

Please see attached Macro showing weld profile & no defects.https://files.engineering.com/getfile.aspx?folder=f0a320a0-57c0-4624-8d2c-16d3c2a35dc5&file=A18604-07763_04-01R0_60CIM002_Macro_R4.pdf

ASME Code Case 2835, ASME Section VIII UG-84(g) (2) impact tests are no longer valid if they were completed prior to ASME Section VIII Div 1, 2013 edition.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?.

Added 2% H2 to the Argon worked perfect all mechanical test was acceptable. Thanks to allhttps://files.engineering.com/getfile.aspx?folder=2969f4df-de2f-416a-878d-e3067c19d645&file=IMG_4993.JPG