Rick,

Have you reviewed:

UFC 4-150-06
UFC 4-150-02

Maybe some assistance in these but for sure there are contact persons
listed for followup phone calls related to these specialized facilities.

Bill Brooks

William N. Brooks, P.E.
Brooks Fire Protection Engineering Inc.
372 Wilett Drive
Severna Park, MD 21146
410-544-3620 Phone
410-544-3032 FAX
412-400-6528 Cell

-------- Original Message --------
Subject: Deperming Pier
From: Rick Green <[EMAIL PROTECTED]>
Date: Thu, July 24, 2008 8:18 am
To: "[email protected]"
<[email protected]>


I am installing a dry pipe system (no sprinklers) supplying four hose
valves on a pier.

The dry pipe valve assembly is located in a heated area. Extending out
from the dry pipe valve assembly is 6" galvanized steel pipe. The steel
pipe is routed below the pier out to the location of four hose valves.

The pier is used for Deperming ships, submarines.

Deperming is a procedure for erasing the permanent magnetism from ships
and submarines<http://en.wikipedia.org/wiki/Submarines> to
camouflage<http://en.wikipedia.org/wiki/Camouflage> them against
magnetic detection vessels and enemy marine
mines<http://en.wikipedia.org/wiki/Naval_mines>.

Anyway, there is about a 200' section of the pier that requires that all
materials be non-magnetic.

* Galvanized steel pipe that NAVY specified obviously want work.

* CPVC plastic pipe will not work because installing dry system -
correct on this right?

* Provided them pricing for stainless steel, copper, brass and now they
want pricing for Aluminum,.

So a few questions

o Ever used aluminum pipe for sprinkler installations?

o Is there some other pipe type that I am not thinking about

Help would be most appreciated.

Rick E. Green
District Manager
East Coast Fire Protection, Inc.
1113 Cavalier Boulevard
Chesapeake, Virginia 23323
757/485-7486(p), 757/295-0956(direct), 757/328-0131(cell)
[EMAIL PROTECTED]

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