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sorry my bad typing 1. Grind out welds on all tubes 2. Pull all tubes out. 3. re-detail (tube sheet) 4. insert new tube sheet => insert new tubes on by one/ 5. reweld up tube sheet. and seal

Hopefully this is ok to ask in the Re-tube process of a fixed tubesheet. Id like to validate my understanding of the process. Is it as below 1. Grind out welds on all tubes 2. Pull all tubes out. 3. re-detail (tube sheet) 4. insert new tube sheet 5. reweld up tube sheet. with a very large...

Hi all. thankyou for the advice below.. sorry these are basic questions we are self insured so no AHJ involved. what I dont understand with the schemes B... why is a floor / above the top layer of say IBCs drums required instead of a fire bulb with a heat shield does the complete...

Thankyou for the comments so far.. very helpful. What do you do , if you have > Metal clad IBCs > Plastic IBCs > drums > class IIIA/B materials can you mix up all 4 above in the same rack? I'm getting feedback that NFPA 30 does not have have a design criteria to cover this mixture of...

No sorry for confusion.. In the area I have Class II combustible, Class IIIA combustible , Class IIIB combustible stored in IBCs in racking. So what determines what scheme of fire protection do i need NFPA 30 seems to have schemes from A,B,C,D,E... Im struggling to understand what sets the...

Hopefully this is ok to ask. I'm going through NPFA 30, to understand a proposal I've been given. (I will ask the vendor as well).. (and sorry if its obvious).. On CH16, Im struggling to see what determines if I have Class II combustible Class IIIA combustible , Class IIIB combustible -...

Hopefully this is ok to ask. Id like to validate that its only a convention in the UK that electrical cables are black and red above a certain voltage etc.. from what i can tell its what is normally done .. not a standard otherwise this is only cable colour you would normally get

thanks for the advice. it is for a cosmetics type duty.

Please delete if not ok to ask: All the literature I can see (and the info ) from valve vendors (Ive found so far).. is that rugosity of GMP valves is always 0.8 or less. A chemist in our organization has asked can we get lower , say 0.5 . We have some drivers for a lower spec for quality...

Hi, Sorry if this basic questions and not approprate please delete..(sorry) I am a project engineer without an EI background. but a moderate experience with this.. I'm looking to get a background basic understanding of capacities and system setup. Why I am asking: > Site project to...

thankyou, it seems to be design is not so specific its all about how you record installations and design to keep clean and cleaning of before commissioning etc.. so an example..I could use mineral wool insulation provided its sealed and procedures and methods to keep away from open manways...

thanks for response, its a good manufacturing plant for customer requests e.g. cosmetics not food.. I assume thats different. cGMP consultant or cosmetics or other..sorry if i dont understand. from what ive read gmp does state the area must be clean. so surely a solid floor is enabling...

For piping design of GMP systems is there an EU / British standard which must be followed. The current systems on a unit we have is clamp ring. Is there an EU standard or reference which dictates this. thanks

Im not sure exactly where to post this. I'm supporting a GMP plant. I after a design guide for general GMP practice.. is it a GMP requirement to have flooring plate ? (on 1st,2nd. 3rd floors..) or is the requirement just to be clean.. and generally structural steel floors are plated to...

(None electrical engineer question here. so applogies) is there a standard which defines how you manage an electrical cabinet MCC/ Switch gear in an area with a wet springler system. this is an exsiting system but also plans to put new cabinets in. fire protection is required in general area...

Dear Pipers.. Is their a list to what is expected as "common" practice for a SEP -Piping system under PED for a handover package from a contractor. I'm finding a variety of detail being provided.. and struggling to get a recommendation.. is there any decent info or background references one...

Dear all, i like to confirm my understanding of the limit for balanced bellows relief valves.. can you get a valve with a set pressure and balanced bellows below 1 barg? i Dont believe so but i wanted to check thanks in advance

thanks for the response. Sorry if this a daft question can you get non-conductive armored cable ? From the information I have is that our company policy is such that we cannot use conductive armored cables. so. hence can you get armored cable which is conductive one assumes this is every...

thanks for the input , (I'm a process background engineer). We are putting fiber on existing racks. Some of the racks and cables date back before I was bore (and I'm old !!!).. so its hard to tell what it is its a black thick cable. so from what I've read i think you can get fiber cables...

Apologies if this has been asked before for different levels of voltage is Medium 415 V, 11KV etc.. is there a minimum separation distance from mult-mode fibre optic cable? or a design code which should be followed to design too. For a mixture of overheads cable racks and ducted cable runs...