Dear All,
Up to what thickness the radiography can be done on materials ..? is there any limitation to thickness beyond which radiography is not recommended as per code..?
Regards
Alok
Dear All,
In which case the ''Induction Heating'' of piping components are mandatory over ''Resistance Heating''?? Is there any code reference or bindings..?
Thanks in advance,
Alok
Dear All,
I am working in a power plant construction project.
In my QAP the radiography to be taken for Water Wall Panel to Header joints is 10 percent of total joints welded per welder per shift. But there is nothing described about the additional joints to be radiographed (as penalty...
Dear All,
What is the difference between QW-403.6 (T Limits) & QW-403.8 (Change in T qualified)..? How is both different from each other
KiNdly help.
Alok
Dear All,
I am working in a thermal power construction project. I just wanted to know which code is generally followed for condenser piping work related to themal power plants. Is it B 31.1 or B 31.3 or ASME Section I..? Ours is Drum Based Boiler.
Kindly Suggest.
Thanks in advance.
Alok
Dear All,
As per welding schedule ER 70S-A1 Filler wire was to be used for welding Carbon steel joints of Boiler tubes, But the contractor by mistake used ER-70S2 filler for some joints. Will this have adverse effect on performance of boiler ? do we need to cut entire joints..?? What can be the...
Dear All,
As per AWS D 1.1 Table 4.10 applicable figures for groove weld with nominal thickness of test plate 20 mm (Qualified thickness as per table is min 1/8 inch & max 2T) is Fig. 4.21,4.22 & 4.29. But all above figures refers test plate for unlimited thickness. Y so..?
Kindly clarify
Dear All,
is there any guideline in ASME Section I to determine number of penalty radiography to be taken if the joint fails in spot radiography? Or it is left to the agreement between manufacturer & purchaser?
Kindly reply.
Alok
Dear All,
As per ASME Section IX QW 461.9 if a welder qualifies in plate with 3F position , He also qualifies to weld in pipe having OD more than 610 mm in Flat & Vertical position. My problem is that we have got 1G ( Flat), 2G (Horizontal), 5G & 6G (Multiple)positions mentioned in QW 122. So...
Dear All,
I am working in a power plant construction project. The WPS says preheat maintainance at 150 degree C for one hour for A 213 T22 joints. But contractor is saying that as per ASME section IX preheat mentainance is not an essential variable. Shall We insists for preheat maintanance as...
Dear All,
I am working in a power plant construction project as QA/QC Engineer. To review the radiography films of various pressure parts should I refer ASME Section I or B 31.1 ?
Kindly help.
Dear Sir,
Thanks for your kind reply. But I don't find any E-7018W1 listing in in SFA5.5 ( ASME SECTION II Part C). Only 7018-A1, 7018-B1 & 7018 B-3 is there. where can I find this??
Regards,
Alok
Dear All,
Could u pl. suggest the AWS Class of the welding electrodes for SMAW process for the welding of dissimilar materials, Carbon steel (P-1) to Corten steel (P-3, SA 588 Gr-B) Materials . Also pl. suggest me the AWS class for swaw welding electrode for Corten steel welding.
Thanks in advance
Dear All,
Self is working in a power plant construction project from purchaser side. The EPC contractor is showing us a WPS & PQR which is established & approved in the past for other company which is not associated with our job anyway . Welding procedure qualification tests have been done...
Density difference can only be found through RT, but before doing the RT, on what criteria the weld can be visually accepted for concavity?
Best Regards,
Alok
Dear All
I am not able to fully understand 'ROUNDED INDICATION ACCEPTANCE CHARTS'. If i get a radiographs not matching exactly with these charts How it can be understood..?
plz reply
