Greg,
NFPA Chapter 22 22.30.1.3 System Design for Museums, Libraries, and Their
Collections in Compact Storage, A.22.30.1.3.1 The automatic fire suppression
system, the compact storage system, and the storage compartmentation features
should be designed to limit fire damage in accordance with the facility's fire
safety objectives (e.g., confine fire growth to the compact storage module of
origin). Significant factors to consider include the number and size of the
storage modules, the separation provided between the modules (end-to-end and
back-to-back), and the type of materials being stored. In general,
double-interlock pre-action systems and dry pipe systems are inappropriate for
compact storage, because of the additional delay they introduce, coupled with
the delays in activation resulting from the compact storage units themselves.
Other protection features should be considered to limit the extent of potential
fire damage, including the following:
(1)Very high density sprinkler systems
(2)Quick-response sprinklers
(3)Early-warning smoke detection
(4)Spacers between carriages or, for automated systems, automatic park
mode to increase flue spaces between carriages upon activation of a fire alarm
or during idle periods
(5)Metal vertical barriers in the middle of the shelf
(6)Open-top shelving
[909: A.9.12.23.4.1.3]
Done some work in the past with these type of storage units and used the
following references:
Full Scale Fire Tests of Sprinklered Mobile Shelving Units for National Library
of Canada, Gage-Babcock & Associates, Dated May 1992.
Full-Scale Fire Tests and the Development of Design Criteria for Sprinkler
Protection of Mobile Shelving Units, G.D. Lougheed, J.R. Mawhinney, and J.
O'Neill, Fire Technology, First Quarter 1994, Volume 30, Number 1, pp.'s. 98 -
133.
The research and full scale burn testing of the "mobile shelving units"
indicates that:
1. The sprinkler system design density should be 0.30 gpm/sq. ft. over 3,000
sq. ft. or area of the compartment whichever is less.
2. The storage shelf unit must have a 6 inch space between each unit, either
by physical means of be automated means when waterflow alarm is activated.
3. The compartment containing the rolling aisle storage shall be cut off from
the remainder of the facility with two hour fire rated barrier (ceiling, floor
and walls), with openings protected by 1½ hour, Class B, fire rated protective
devices.
4. Quick response sprinklers should be used.
Greg, you also might want to check with DOD' fire protection engineering group
which has jurisdiction over the base in question for any DOD requirements for
this type of storage.
Regards
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 Greg McGahan
Sent: Friday, October 26, 2012 9:01 AM
To: [email protected]
Subject: High capacity Rolling Storage
Good Morning!
There is a thread concerning this issue from 2008 with some reference to
upcoming documentation, but I do not know where it exists..
We have a military facility with the rolling storage cabinets with large
compartments for storing "gear" - "gear" varies greatly.
It is only about 7' tall and there is more than 18" clearance from the top of
the cabinets to the sprinklers. Currently, there is about 14' clearance and the
bldg is designed for OH2, this storage is only about 10% of the entire bldg
footprint. Now they are building a mezzanine over the cabinets and there will
be about 3' of clearance. I guess the reationale would be that the OH2 should
still be sufficient?
Thanks,
--
Greg McGahan
Living Water Fire Protection, LLC <http://www.livingwaterfp.com>
1160 McKenzie Road
Cantonment, FL 32533
850-937-1850
fax 850-937-1852
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