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Dear Experts, Does any heating rate (controlled heating rate degree celsius per hour)is applicable for normalisation heat treatment of Dish end for pressure vessels? i could not find any reference on code ASME 8 .

Yes i cross checked ,and in API 650 it is mandatory requirement to match welding consumable minimum stress as per spec to material minimum specified stresshttps://files.engineering.com/getfile.aspx?folder=fea9cbb7-5fb0-455f-95d0-025ab41af032&file=API_650_WELDING_REQ.pdf

Dear Experts, i have a material SA 537 CL2 30 mm basemetal ,as per ASME SEC 9 QW 422 Whose minimum tensile strength is 80 ksi, now the matching electrode will be E 8018 AS PER TABLE 3 SFA 5.5 whose tensile strength minimum is 80 ksi now if contractor proposes E 7018 (Whose minimum tensile...

Jstephen, Thanks a lot for clarification especially the second answer, i was not sure whether to take first 3 meter of each thickness of each welder (and even initially didn't consider in my RT scope),as clause 8.1.2 b says to follow clause 8.1.2 a(which applicable for below 10 mm) and not...

ALSO FOR 15 MM AND 21 MM ,30 MM one RT shall be taken in first 3 meter of welds as per clause 8.1.2.2 ? because RT is mentioned for each thickness ,even though already we have done RT done in first 3 meter of 10 mm itself

As per API 650 CLAUSE 8.1.2.2 b For thinner shell plate greater than 10 mm but less than 25 mm “In the lowest shell course, two spot radiography in each vertical joints shall be taken” Now for our tank, shell plate thickness are 10 mm,10mm,15 mm,21 mm,and 30 mm in this case we are already...

Thanks for explanation, can i assume FTCO is abbreviation for clean out doors.

yes it have clean out doors, and same will be done PWHT as per API 650 requirements as well as if any nozzles applicable as per API 650 requirements , my concern was why Simulated PWHT is done in test coupons and mechanical properties evaluated ,if we are only going to do PWHT only in nozzles...

Dear Experts we are constructing crude oil storage tanks as per API 650, Now as per my understanding PWHT is only applicable for nozzle openings as per API 650,not shell buttweld, but now in drawing it is mentioned supplementary requirement for simulated PWHT of mechanical test coupons for our...