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A welder have 3 qualifications as follow (all as per ASME-IX) 1. 6G Uphill, GTAW full, DCSP, pipe 2" Sch. 80 SA312-TP304L, Filler ER70S-G, single V butt weld 2. 6G uphill, GTAW (root 3.0 mm thk) & SMAW (fill-cap 4.11 mm thk), pipe SA106-B Sch 40, filler ER70S-G & E7016, single V butt weld 3. 6G...

API 650 11th Ed. Section 4-6 state that nozzle flange shall comply with ANSI B16.5. Is this statement also required for manhole flange? If "yes" its mean, plate ASTM A36 could not be used as manhole flange & manhole cover? Thanks for any advice

ASTM A252 Para 16.1 state that one tension test shall be made for each 200 pipe. If those pipes (200 joints) made from two or more raw material/ coil (each coil has one heat number), it is permissible to perform only one tension test? Or it shall be made tension test for each raw material/ heat...

What kind of consideration when choosing either semi ellipsoidal or thorisperical head for a pressure vessel? It would be use as Knoct Out Drum. Also the advantage & disadvantage of them. This matter is regardless cost or fabrication schedule...

Did ASME B31.3 have a restriction of test gauge range for hydrostatic test as well ASME VIII-1 Para UG-120?

I have two qualified wps/pqr API 1104 which comprise API 5L-B to API 5L-B and API 5L-X52 to API 5L-X52. I would like to joining API 5L-B to API 5L-X52. May I to used these wps/pqr without requalified? the others...

I have pressure vessel that constructed under ASME VIII-1. It was found leakage due to internal corrosion on shell. May I to patching this hole with fiber material? If "yes", which Standard/ Code that permitted this method? If have reviewed API 510 and NBIC-23 but have found nothing about it.

For storage crude oil (medium corrosive) which material should be use ASTM A283-C or A36? As per API 650 both are may to used. My question is what considerations to choosing or determining one of listed materials above? Which material have susceptible corrosion A283-C or A36?

I am looking for any statement in ASME VIII-1 regarding the requirements of NDE for joint category D (nozzle neck attached on shell by fillet weld). UW-2(a)(1)(5) only state that joint Category D shall be full penetration and there is no requirement to performed NDE such as MT/PT/UT. Can...

Hi all, Api 650 Section 3.1.3.5 describes that max overlap is 1" for single lap and 2" for double lap joint. I am not clear with this statement why single lap shall not exceed 1"?

Is there any statement in B31.4 that cite the two additional joint shall be inspected when the result of a joint girth weld reveal "rejected"? This is a flowline with hydrocarbon services. RT was performed by 10% randomly.

Dear All, I need the value of compressibility factor for water with restricted pressure 1000 psig or below. Thanks for any valuable replay

Api 653 restricted that max thk for new plate for patching within critical area is 1/4". Does this requirement shall be applied in out of critical area? If no, what the max thk shall be used?

Does material plate jis ss400 has been adopted by BPVC latest edition? If no, may I to used it as pressure part as per UG-10?

Dear All, Is it permitted by Code to welding a coupling 1" in centre line of long seam shell? Is there any additional requirement (except ndt) for this condition? Thanks for any advice

Does anyone know the website address of VM Flange & Fitting Manufacture?

PV that use as integral of rotating equipments are excluded of BPVC VIII-1. Which Code/Standard can be used as rule of construction for those PV?

What the materials (ASTM or AISI) that generally use for casing head housing (refer to API 6A-75k-AA Class)?

Per subject above, shall we performed 100% RT examination according to Asme B31.3? If "YES" in which paragraph this statement/ requirement appear?

Does material SS more susceptible of SSC/SCC/HIC than CS? According to NACE MR0175 part-2, P-No. 1 has acceptable with this Standard. In part-3 for SS (P-No. 8) has limitation max parsial pressure of H2S. It's mean for P-No. 1 is acceptable without limitation of max H2S partial press.?