Recent content by Rahulvaland

Dear Stanweld,SnTman.... Question is very much clear.If you dont know answer than dont post replies.Just read what other reply. My question is fundamental behind it. What makes SA 266 permitted for tubesheet material.The reasons can be manufacturing process,composition,stress values,loading...

Dear all, As per below ASME interpretation code does not allow SA 105 material as tubesheet. Can anybody share advantages of using SA 266 material over SA 105. There may be some fundamental behind this by ASME. Interpretation: VIII-1-89-178 Subject: Section VIII, Division 1 (1989 Edition)...

[highlight #204A87][/highlight][highlight #CC0000][/highlight]What is the reason of providing the HOTBOX in skirt-shell junction, As per my knowledge it is provided to reduce the intensity of thermal stresses at shell-skirt weld junction, But i have some doubts and i could not understood this...

Dear Prajwal,Thanks for you reply. Which component is governing MAWP / MAP of jacket side? Have you considered inner shell's MAWEP / MAEP for evaluating MAWP / MAP of jacket? These need to be considered as these are part of pressure chamber.Than lowest value will be considered as MAWP / MAP of...

Dear Prajwal, Apart from your question on correct marking, I am also working on similar equipment.Can you please tell me at what pressure you are performing hydrotest on jacket side. What is hydortest requirement UG-99(b) or UG-99(C). Have you checked in hydrotest of jacket side inner shell...

@vpl, ASME Sec.VIII Div.1 Edition 2010 Add.2011 I think it is understood from the clauses refered in my query.

Dear Vesselfab, We have design inner vessel considering external design pressure of jacket + FV in inner shell. But that is design case.My concern is with hydrotest case that is also UG-99(c) not UG-99(b). Now when evaluating jacket side MAP/MAWP to determine hydrotest pressure we need to...

Put it in simple way, Dear all, During internal pressure hydrotest we take advantage of allowable stress = 0.9 * yield stress. I have one case wehrein jacket chamber MAP is limited by MAEP of inner shell. now if we do Hydrotest pressure as per UG-99(c) = 1.3*MAEP than that inner shell will...

Dear all, I am working on one shell & tube heat exchanger (TEMA Type : BKM ) channel side is steam jacketed as per ASME Sec.VIII.Div.1 Appendix-9 Type-2 jacket. Channel Shell MAEP is governing Jacket MAP.Client Specification requires hydrotest pressure as per UG-99(C). If we multiply 1.3 *...

Thanks dhengr . with reference to your reply kindly note that, Our foundation type is concrete Ring wall (Ring width = 500 mm). And the inside slab is made up of compacted sand. with above configuration, We were proposing the FIRE CLAY BRICKS on Ring wall surface inline with our PTR. However...

I am handling a Liquid sulphur storage tank (42 m Dia x 9 m Ht) whose operating temperature is 150 deg.C. PWHT for process reason is not required for this tank. This tank is provided with, 1) Heating coils on Tank Bottom, Shell & Roof. 2) Mineral wool insulation on Tank shell & roof. I want...

The tank is API 650 Atm. pressure storage tank

Thanks Duwe6 for reply. However,if you have any past experience of Liquid sulphur storage tank with column supported roof, than kindly share the same.

I am handling a Liquid sulphur storage tank (42 m Dia x 9 m Ht) for which operating temperature is 137 deg. C & design pressure is Atmospheric. I have following queries. 1) For above tank, is it adequate to provide heating coils on Tank roof & bottom only ? OR Are the coils required on Tank...

basically i am finding problem to interprete clause 2.3.1 (c)...