We are installing new CCTV cameras on a project and I want some feedback experience of electrical teams on providing solar powers (maybe) dual supply or dual batteries to power security cameras ?
technology of power generation and storage seems to have moved on a lot.. so at 60watt type power...
Packed Bed L/D to avoid channeling :
I am after a rough guide / or basic validation to avoid Channeling in packed beds .. for activited carbon treating a product to remove order.
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
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
