FEMA 453 Design Guidance for Shelters and Safe Rooms

have been appropriately placed to provide accurate ambient
pressure readings without the effects of dynamic pressure, and
that they are shielded to prevent blockage by moisture, insects,
etc.
m If there is air conditioning or heating, inspect to determine
that outside air will not be drawn in through closed dampers
or other leakage points.
m Verify that gauge and status lights of the control panel gauges
are marked with operating ranges.
m Verify that markings, signs, and condensed operating
instructions are adequate for the user to operate the system
properly.
3.7.3 Functionality
m Visually inspect all dampers to ensure they move freely and
assume the correct position for both normal and protective
modes.
m For a mechanical pressure gauge, determine that the gauge
has been zeroed properly.
m If there is a low-pressure alarm or status indicator, verify it has
been adjusted to the correct pressure threshold.
m Verify that status lights accurately indicate position/operation
of dampers and fans.
m Verify the push-to-test capability for status lights.
m Verify that instructions for operating and maintaining the
system are available at the safe room and provide clear and
accurate guidance for an untrained operator to activate the
protective system.
m Verify the operation of communications equipment for safe
room occupants.
m Verify the proper function of the change-HEPA gauge or
indicator.
CBR ThReaT pRoTeCTion
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