Stewart, Please send me the details of the incident off-line. I would appreciate it.
Thanks, James L.(Jim) Roberts, PE/SE Fluor Corporation 100 Fluor Daniel Drive - C104F Greenville, SC 29607 864.281.5149 864.281.4916(Fax) Stewart Kidd <[EMAIL PROTECTED]> Sent by: [EMAIL PROTECTED] 11/24/2008 10:49 AM Please respond to sprinklerforum To [email protected] cc Subject Re: Coal conveying belts Limestone may be inert but belts, lubricants, bearings and motors are not ! British Steel suffered a £25m fire from a fire in a limestone conveyer in one of their plants which took the facility off line for almost three months. The other problem is, define fire resistance: - Canadian Bureau of Mines? German DIIN ( three separate classifications for belts)? Japanese ? My advice (based on what most international insurers now demand is to install sprinklers/deluge protection on all inclined conveyors which are essential for the operation of the facility. This is also covered in NFPA 850. Stewart Stewart Kidd www.risk-consultant.com On 24 Nov 2008, at 14:17, [EMAIL PROTECTED] wrote: > Ron, > > When you say "tube style", I am assuming that is the same as "pipe" > conveyors where the belt is open at loading and unloading ends, but is > "wrapped" closed by idlers for travel between conveyor ends and is > flat > for the return travel. Is that correct? > > If the belt is fire resistive, it might not need water spray > protection > for the return belt depending upon the quantity of coal dust still > adhering to the belt. > > I have recently done a 1000 ft. limestone conveyor of this type, > where the > client wanted both belts protected even though the belt was fire > resistive > and belt motors were interlocked to shut down the conveyor. - over > kill in > my opinion, since limestone is inert. > > For that situation, spray nozzles were provided over the top of the > top > conveyor and at the side to spray between belts and below the return > belt. > > Regards, > > James L.(Jim) Roberts, PE/SET > Fluor Corporation > 100 Fluor Daniel Drive - C104F > Greenville, SC 29607 > 864.281.5149 > 864.281.4916(Fax) > > > > > > "Rod DiBona" <[EMAIL PROTECTED]> > Sent by: [EMAIL PROTECTED] > 11/21/2008 06:33 PM > Please respond to sprinklerforum > > To > <[email protected]> > cc > > Subject > Coal conveying belts > > > > > > > > I am wondering what is typically done when covering an elevated (40' > and > higher) and enclosed tube style coal conveyor. The property in > question > is an FM property. The dilemma that I am trying to resolve is that > when > looking at FM data sheets 7-11 and 4-1N it only shows and talks about > configurations to cover the top belt with no mention whatsoever of the > return belt. NFPA #15 7.2.3.3.2 says "Discharge patterns of water > spray > nozzles shall envelop at a net rate of not less than .25 gpm/ft, the > top > and bottom belt surface area, conveyor surfaces where combustible > materials are likely to accumulate, the structural parts, and the > idler > rolls supporting the belt." > > > > This seems to be a rare case where FM's requirement is less stringent > than NFPA. In this case I am dealing with Powder River Basin coal > which > is more likely to spontaneously combust than coal from other areas > so I > would really feel better about doing both belts. At the end of the day > FM will dictate the minimum but I wanted to be fully informed to give > the owner all options. Thanks for your input as always. > > > > Rod DiBona > > Rapid Fire > > _______________________________________________ > 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) > > ------------------------------------------------------------ > The information transmitted is intended only for the person > or entity to which it is addressed and may contain > proprietary, business-confidential and/or privileged material. > If you are not the intended recipient of this message you are > hereby notified that any use, review, retransmission, dissemination, > distribution, reproduction or any action taken in reliance upon > this message is prohibited. If you received this in error, please > contact the sender and delete the material from any computer. > > Any views expressed in this message are those of the individual > sender and may not necessarily reflect the views of the company. > ------------------------------------------------------------ > _______________________________________________ > 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) ------------------------------------------------------------ The information transmitted is intended only for the person or entity to which it is addressed and may contain proprietary, business-confidential and/or privileged material. If you are not the intended recipient of this message you are hereby notified that any use, review, retransmission, dissemination, distribution, reproduction or any action taken in reliance upon this message is prohibited. If you received this in error, please contact the sender and delete the material from any computer. Any views expressed in this message are those of the individual sender and may not necessarily reflect the views of the company. ------------------------------------------------------------ _______________________________________________ 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)
