HAVE A LOOK at NFPA 850:7.4 - prudent international utility practice
is to sprinkle coal hopper feeder belts or fit water curtains where
inclined conveyors enter the bunker feed area. There is a small but
distinct risk of methane explosion in bunkers if water is applied to a
bunker on fire. Carbon monoxide monitoring or explosive gas monitoring
is useful. There have been a couple of serious fires in this type of
kit in Germany in the last couple of years and one in the US. The
Annex 7.4.1.1 of NFPA 850 has a lot of useful stuff on the hazards.
I am advising on five coal/lignite plants at the moment and tend to
recommend a combination of linear detection/auto stop on belts, fire
resistant belts, water spray or sprinklers on critical belts, cctv in
transfer houses and on long inclined belts and water curtains where
belts enter hopper feed galleries. Most international insurers are
reluctant to provide cover at standard rates without this type of
protection.(Indeed, most London market insurers now look for NFPA 850
compliance).
If anyone would like a copy of my Outline Specification for Power
Generating Plant (usual disclaimers) send me an email offline to: [EMAIL PROTECTED]
Regards
Stewart
Stewart Kidd
Loss Prevention Consultancy
Cambridge, England
On 11 Sep 2008, at 13:46, <[EMAIL PROTECTED]>
<[EMAIL PROTECTED]> wrote:
NFPA 85 has a lot of verbiage concerning coal bunkers. But there's
not a lot if any fixed fire protection involved. Prevention and
suppression is mostly controlled by various procedures and
operational methodology. Check it out.
Also might look at NFPA 120, FMDS 6-24(Coal Pulverizers and
Pulverizing Systems), FMDS 6-2(Pulverized Coal-Fire Boilers).
Craig L. Prahl, CET
Fire Protection Group
Mechanical Department
CH2MHILL
Lockwood Greene
1500 International Drive
PO Box 491, Spartanburg, SC 29304-0491
Direct - 864.599.4102
Fax - 864.599.8439
[EMAIL PROTECTED]
http://www.ch2m.com
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
] On Behalf Of Chris Mak
Sent: Wednesday, September 10, 2008 7:54 PM
To: sprinklerforum
Subject: Coal Bunkers
I have been asked if there are any guidelines for the sprinkler
protection of coal bunkers?
Not sure of the background to this question, but would appreciate
any feedback.
Regards
Chris Mak
Aon Sprinkler Certification
Via Blackberry
This document should only be read by those persons to whom it is
addressed and is not intended to be relied upon by any person
without subsequent written confirmation of its contents.
Accordingly, our company disclaim all responsibility and accept no
liability (including in negligence) for the consequences for any
person acting, or refraining from acting, on such information prior
to the receipt by those persons of subsequent written confirmation.
If you have received this e-mail message in error, please notify us
immediately by telephone. Please also destroy and delete the message
from your computer. The Unsolicited Electronic Message Act 2007 (The
Spam Act) came into effect from 5 September 2007. As a valued client
you may receive communications from us from time to time, including
electronic publications, invitations and related information. Please
advise if you wish us to stop sending these communications to you.
Otherwise we will assume you wish to continue receiving these
communications from us.
Any form of reproduction, dissemination, copying, disclosure,
modification, distribution and/or publication of this e-mail message
is strictly prohibited.
_______________________________________________
Sprinklerforum mailing list
http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum
For Technical Assistance, send an email to: [EMAIL PROTECTED]
To Unsubscribe, send an email to:[EMAIL PROTECTED]
(Put the word unsubscribe in the subject field)
_______________________________________________
Sprinklerforum mailing list
http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum
For Technical Assistance, send an email to: [EMAIL PROTECTED]
To Unsubscribe, send an email to:[EMAIL PROTECTED]
(Put the word unsubscribe in the subject field)
_______________________________________________
Sprinklerforum mailing list
http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum
For Technical Assistance, send an email to: [EMAIL PROTECTED]
To Unsubscribe, send an email to:[EMAIL PROTECTED]
(Put the word unsubscribe in the subject field)
