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FIRE SERVICE AND GENERAL FIRE SAFETY TOPICS => Technical Advice => Topic started by: skeendoo on August 01, 2013, 01:14:46 PM

Title: Dry Riser Blank Caps
Post by: skeendoo on August 01, 2013, 01:14:46 PM

Is There a directive that states that brass blank caps in dry risers should be changed to plastic or rubber
Any help would be appreciated

Title: Re: Dry Riser Blank Caps
Post by: jokar on August 01, 2013, 03:10:00 PM

Extract from BS 9990 2006.
Materials which have a high scrap value can be attractive targets for
thieves. Components from materials of lower value can be considered
when their use is permitted by a British Standard,

Title: Re: Dry Riser Blank Caps
Post by: jokar on August 01, 2013, 03:18:17 PM

20 Blank cap and chain
A blank cap complying with BS 336 shall be
provided. The cap shall be provided with a pressure
relief hole having a flow area of not less than 2 mm2.
The blank cap shall be attached to the body by a
suitable lug, “S” hook and chain.

12 Blank caps, plugs and chain
Blank caps and plugs shall be attached to the equipment with which
they are to be used by an “S” hook and chain with brazed, welded or
integrally cast joints (see Figure 9).
NOTE Unless otherwise specified by the purchaser, blank plugs for
standpipes (see 13.4) are non-vented. If venting is required it should be in
accordance with BS 5041-1 and BS 5041-2.