Automatic water sprinkler systems are the extinguishing agents of choice for libraries and archives today. Different types are available, and new ones are developed frequently. The type attracting the most interest today is a misting system that uses a fine, low-volume spray emanating from independently operating flow-control heads. If sprinklers are used, it is essential that a remote alarm alert a continuously manned post whenever water is discharged anywhere in the building; such alarms are usually triggered by changes in water pressure.
Gaseous systems cannot be recommended at this time, for several reasons:
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• The most popular, Halon 1301 (CBrF3, bromo-trifluoromethane), was effectively banned in most countries some years ago because of its role in depleting the earth's ozone layer. • Gases are quickly and fully expelled from their compressed containers, and if they fail to put out a fire immediately, there is no reserve extinguisher. • Carbon dioxide (CO2) is dangerous: it will suffocate any staff member caught in the area of discharge. |
An alternative to gas or water is high-expansion foam, which is said to contain very little moisture; no such systems are known to be in operation, however.
Library staff should familiarize themselves with all
installed systems so that they can take action if a
system malfunctions. All suppressant systems, including
hand-held fire extinguishers, should be inspected and
tested regularly. The library should involve the local
fire department in advising and training staff in the
use of fire extinguishers. The library can also use
this as an opportunity to enlist the fire department's
services in assessing its emergency plans.
