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FEMA 453 Design Guidance for Shelters and Safe Rooms

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Figure 3-3<br />

a tabletop recirculation<br />

filter unit with a substantial<br />

adsorber is a simple<br />

means of providing higher<br />

levels of CBR protection to<br />

unventilated safe rooms.<br />

SoURCe: BaTTelle<br />

3.6.3 Maintenance <strong>for</strong> a Class 1 <strong>Safe</strong> Room<br />

Maintenance of the Class 1 <strong>Safe</strong> Room consists primarily of<br />

serviceability checks <strong>and</strong> replacing filters. Serviceability checks<br />

should be per<strong>for</strong>med about every 2 months by turning the system<br />

on <strong>and</strong> checking <strong>for</strong> the following while it is operating:<br />

m System pressure. The system pressure is indicated by a gauge<br />

typically mounted on the control panel, with the correct<br />

operating range marked on the gauge. If the pressure is<br />

outside this range while the system operates, troubleshooting<br />

should be initiated.<br />

3- CBR ThReaT pRoTeCTion

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