Craig is correct,the original post has nothing to do with a fire
sprinkler system!
Lamar Vaughn,SET
On Fri, May 4, 2012 at 10:12 AM, Jim Davidson wrote:
Check NFPA 15 Table 6.1.2.2 for electrical clearances from water spray
equipment to live un-insulated electrical components. Also it is very
good practice to check with the owner's engineering department of the
electrical equipment since they have the safe operating distances as
part of the design of the equipment. It is important to check with the
supplier of the electric power to see what safeguards are required.
Have a fire safe day.
Jim
DAVIDSON ASSOCIATES
Fire Protection Engineering P. O. Box 4010
Code Consultants Greenville, DE 19807-0010
Medical Gas Systems Engineering (302) 994-9500
Fax (302) 234-1781
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Ford,
Charles
Sent: Friday, May 04, 2012 8:00 AM
To: [email protected]
Subject: RE: High voltage clearances
I thought NFPA 13 had a chart specifying clearance distance from
sprinkler piping and hi voltage open bus bars. I can't find it. There
is
one in 12 ( co2 systems) but not eaxctly the same thing. I have a
partner asking if there is a minimum distance. any thoughts out there?
C. Burton Ford
Nicet Certified
Special Hazards IV
Fire alarm IV
Sprinkler III
Water Based Inspections I
NFPA Certified Fire Protection Specialist [CFPS] Cintas Fire
Protection
1038 Conshohocken Road
Conshohocken ,PA 19428
610-233-1400
Fax 610-233-1401
________________________________________
From: [email protected]
[[email protected]] On Behalf Of Stewart Kidd
[[email protected]]
Sent: Monday, April 30, 2012 6:26 PM
To: [email protected]
Subject: Re: Aerosol vs Halocarbon/Inert extinguishing agents -
Firepro
Answers - Please comment!
Reza
1. Why does IBM use sprinklers (with water) in all its factories and
units ?
2.Data can be recovered from hard drives which have been wetted by
sprinklers or fire hoses - this is not true of powders 3. Clean up of
powder even when there has been no fire is very expensive as the
powder
is hygroscopic.
4. Tests in Norway and by US GSA suggest that powder is damaging for
heritage objects - especially paintings, glass and china
Best
Stewart
On 30 Apr 2012, at 20:34, Ed Vining wrote:
1. Being OK for electrical doesn't automatically make it OK for
electronics or systems with moving parts.
3. Continued training and awareness can't be counted on. George
Church's anecdote about the fire alarm in a restaurant proves that
people are dumber than sheep. Sheep will at least follow the leader.
4. There isn't always a huge mess. Just because aerosol might not
be
worse than some of its competitor doesn't make the method of choice.
Ed Vining
4819 John Muir Rd
Martinez CA 94553
925-228-8792
Cell 925-787-0465
On Mon, Apr 30, 2012 at 12:17 PM, Reza Esmaeili
<[email protected]>wrote:
I have contacted Firepro which is making UL listed Aerosol units and
asked them the below questions, I would appreciate your comments on
their answers:
1- According to NFPA 2010 "Aerosol fire-extinguishing agents shall
not be used on fires involving Deep-seated fires in Class A
materials", then do you offer Firepro units to be used in Paper/Book
Archive Rooms facing deep seated fire in class A material?
ANSWER: All fixed gas extinguishing systems, as well as aerosol
systems are tested and certified for Class A, surface burning fires.
The test protocols for polymeric materials and wood specify
pre-burning times from
3.5 min. to 6 min. respectively. Longer burning time is considered
as
deep seated fires.
2- According to NFPA 2010 "The potential adverse effects of agent
particulate residue on sensitive equipment shall be considered",
then
do you offer Firepro units to be used in Server Rooms with sensitive
hard disks.
ANSWER: FirePro has been independently tested by NLR (Dutch National
Aerospace Laboratory) and TNO (Netherlands Organisation for Applied
Scientific Research), proving that there are no effects on (a)
corrosion of sensitive electrical components, and (b) the operation
of electrical equipment, respectively.
3- According to NFPA 2010 "aerosol systems shall be used in normally
unoccupied areas because of visibility obscuration and the potential
health effects of accidental exposure to the agent" then do you
offer Firepro units to be used in Monitoring Rooms where people
usually exist?
ANSWER: Please see detailed response
www.esmaeili.ir/Aerosol-in-occupied-areas.pdf
4- Do you offer Firepro units to be in a place where dust or residue
is a matter of concern and clean-up procedure costs too much like a
museum, art gallery?
ANSWER: Please note, after a fire, there is a huge mess, Therefore,
after a fire, you are going to clean anyway ! FirePro has been used
in museums and old cultural buildings, etc, the consequences of
other extinguishing agents such as halocarbons, especially in
electrical/electronic applications, can be more serious; of
paramount
importance is the liberation/formation of HF (hydrogen fluoride) and
CO at high temperatures.
So it is best to sweep/dust the FP particles than to damage/destroy
the electrical components with the decomposition of
halocarbons/FM-200.
Best,
Reza
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