Electrical Bus Duct on Side Wall of Blast Resistant Electrical Substation

[orlyboy]

Hi Everyone,

I need your experience regarding the subject above.
We have an ongoing FEED project in one of our client, an Oil & Gas refinery, one of its substation is to be demolished and replaced with new one, a total replacement of old and obsolete 11kV substation.

As required by client, a blast resistant concrete substation building is to be built which houses Switchgears, MCCs, etc..

The LV side of the auxilliary transformers will be connected to the switchgears via BUS DUCT.

With this regard, I need your expertise relative to BUS DUCT installation on the side wall of a BLAST RESISTANT building.

It will be highly substantial if someone can give information with respect to the above subject and as cited.

I've been contacting vendors to ask for their inputs but noone responds.

I need this information to finish my Bus Duct specification.

Your idea is highly appreciated.

Thanks

 

[ScottyUK]

I'm not an expert in blast-resistant structures, but the first thing anyone who is qualified to comment will ask is "How big is the blast?" or "What is the peak over-pressure it needs to withstand?". Do you have this information?

How big are the transformers, or more to the point what is the current involved? Have you considered routing cable underground, entering the building via a buried transit? How will your transformers deal with a major blast? The radiators are very vulnerable to damage because of their thin section and relatively light construction. Are dry type transformers an option?

 

[orlyboy]

Hi ScottyUK,

I have attached a drawing showing the layout of the substation.
The substation building is rated 10PSi (69kPa).

Hope someone share their ideas.

Thanks