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ES&H
Manual Fire Protection Supplement |
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1.0
Purpose
To establish a method to actively control the accumulation of transient combustible material in the Jefferson Lab experimental halls. Combustible materials that are required for the conduct of Physics experiments are carefully evaluated. Appropriate fire detection and suppression features are installed to mitigate the hazard of these combustibles. Transient combustibles materials, generally associated with the delivery of new apparatus and materials to and experimental hall must be controlled to prevent an unacceptable accumulation.The accumulation of combustible materials in the experimental halls requires careful regulation because of the fire suppression plan in these areas necessitated by the unusual configuration of the halls and experimental apparatus.
2.0
Scope
Transient combustible materials in the experimental hall is unavoidable, however, those materials must not accumulate to become significant fuel packages that would damage the unique scientific apparatus and electronics in the hall if ignited. This document provides the requirements for the inspection of the experimental halls for the presence of combustible materials and the disposition of unacceptable accumulation.
3.0
Responsibilities
3.1
Building Managers and Safety Wardens
· Conduct regularly scheduled walkthroughs of all spaces
· Document the walk through and findings.
3.2
Fire
Protection Engineer (FPE)
·
Conducts unannounced walkthrough inspections of
buildings
· Notifies Building Manager/Safety Coordinators of findings.
· Maintains records of inspections and evaluations.
· Assist the Experimental Hall Work Coordinators to manage the combustible load in their areas.
4.0
General Information
4.1 Combustible
Loading:
·
Experimental
Halls A, B, and C were constructed without overhead water based fire
suppression systems installed. This was
done because of the unusual shape of these halls and the ineffectiveness of
sprinkler heads installed high above the floor level. Reference 6.4 provides a detailed analysis of
the experimental hall dome sprinkler analysis.
·
To
comply with the requirements of the experimental hall sprinkler exemption the
following actions are necessary:
o Combustible materials planned to be introduced into the experimental halls is carefully evaluated to ensure a fire protection plan is implemented for each fuel package.
o Combustible materials are managed or removed to ensure fire suppression capabilities exist at all times.
o Transient Packing materials that are easily ignited and would burn rapidly are limited to 20 pounds in each Hall.
5.0
Process Steps
5.1
Combustible Loading:
5.1.1 Combustible Materials that are a component of an experiment are planned and reviewed through an experimental review process. Refer to Fire Protection Supplement Chapter 2: Fire Protection Design for an explanation of the experimental review process.
5.1.2
During
the first week of a maintenance period and weekly thereafter for the duration
of the maintenance period the Fire Protection Engineer inspects each experimental hall
for combustible material disposition.
· Transient Combustible Materials are generally material that is not required to be in an experimental hall during the conduct of the current experiment. These materials are brought into the experimental hall during maintenance periods for the direct support of the existing experimental apparatus or are often being staged for a future experiment. The Fire Protection Engineer evaluates each fuel package and takes the following action:
o Make arrangements through the Experimental Hall Work Coordinator for moderately combustible fuel packages to be positioned within 10-feet of the experimental hall wall so it is in the vicinity of a ring header sprinkler head. Do not exceed the capacity of the Ordinary Hazard Group 1 sprinkler density provided with the ring header sprinkler heads.
o Extend the water based fire suppression system to provide sprinkler coverage over a fuel package that cannot be relocated.
· Packing Materials Wooden pallets and crates, and other packing materials, that the commodity has been removed, should be taken out of the experimental hall immediately. All packing material, regardless of weight, is removed at the end of each work period.
5.1.3 Provide a written report to each Experimental Hall Work Coordinator concerning the observed status and recommended disposition of combustible material in each hall. Send a copy of each report to the Physics Division Safety Officer
6.1
National Fire Protection Association 5000
Building Construction and Safety Code 2009 Edition
6.2
Equivalency Request to DOE Order 420-1B
“Facility Safety” for Jefferson Lab Experimental Halls A, B and C, Approval
letter dated 09/27/10.
6.3
Fire Hazard Analysis – CEBAF and
Experimental Halls, August 12, 2010.
7.0
Revision Summary
Revision 0.1 – 03/23/11 – Added “Fire Hazard Analysis” to References
Revision 0 – 02/08/11 – Content separated from Chapter 10.
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ISSUING
AUTHORITY |
CHAPTER
AUTHOR |
APPROVAL
DATE |
EFFECTIVE
DATE |
EXPIRATION
DATE |
REV. |
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Fire Protection Dept |
02/08/11 |
02/08/11 |
02/08/14 |
0.1 |
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