Cover: The Relationship between Fire-Fighting Unit Availability and the Number of Units Dispatched.

The Relationship between Fire-Fighting Unit Availability and the Number of Units Dispatched.

Published 1975

by Edward Ignall, Richard Urbach

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An important characteristic of a dispatching policy is the number of units sent to an incoming alarm. A common dispatching policy when alarm assignment cards (running cards) are used often sends whichever units are available from a particular group of units. Under this kind of policy, on the average, fewer units will be sent to an alarm in a busy part of the city than to one in a region with low alarm rate. This is a reflection of the reduced unit availability in the busy region. In this paper, a simple quantitative relationship between average availability and average number of units sent is documented. This relationship is used in a model described in R-1649, [A Parametric Model for the] [Allocation of Fire Companies: Users'] [Handbook]. 7 pp.

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