UFC 3-420-01
25 October 2004
the surrounding HAZMAT area curb, to ensure spills do not enter the floor drain. See
Figure D-1
The ES/EWS containment curb protects the floor drain from accidental spills in
the surrounding HAZMAT area. The ES/EWS curb also protects the stored
HAZMAT materials and facility from accumulated ES/EWS water flow by
directing the flow into the floor drain.
4) In HAZMAT areas, post a placard at each ES/EWS stating: "NO DUMPING.
This drain discharges untreated into the sanitary sewer, contact Activity Environmental
Office for proper disposal of spilled material or waste."
The placard provides the occupants with sufficient information to avoid
inadvertent "spills" caused by using the floor drain as a convenient sink for
cleanup of spilled materials. Revise the wording to correctly indicate the
discharge destination and any treatment system it passes through, such as a
neutralization tank or an oil-water separator.
d. Floor drains, where provided, should connect to drain as follows:
1) Extraordinary hazard materials - such as poisons, should not discharge into
a drain system. Utilize the HAZMAT spill containment curb system to contain the
ES/EWS water flow. Provide remote alarm reporting to a central manned station.
Immediate action is required to prevent poison contaminated water from spreading
throughout the facility.
The floor drain is omitted to prevent inadvertent exposure of persons
downstream of the floor drain from unknowingly contacting the potentially
poisonous runoff. The hazardous material spill response team answering the
alarm will be aware of the hazards and capable of taking appropriate
measures for self-protection. If the HAZMAT spill containment curbed area
has insufficient volume to hold a minimum of 30 minutes of ES/EWS water
flow, provide a floor drain to an above ground holding tank sized to hold at
least 30 minutes of flow. Properly label the piping and the tank as holding
poisonous fluids. Provide a HAZMAT spill containment berm around the
holding tank. Provide an ES/EWS containment curb around the floor drain to
preclude fire protection water from flooding the floor drain holding tank and
tank berm. ES/EWS curb to be 1.5 inches (37 mm) higher than the HAZMAT
curb.
2) Plating shops - Drain to the proper industrial waste treatment system.
Segregate cyanide wastes, including ES/EWS drainage, from all acid wastes.
and cyanides. Where the shower is located in a multiple use area, such as a material
handling or shipping/receiving area, drain to the proper industrial waste treatment
system.
3) Battery rooms or shops - Drain to the proper neutralization tank, if provided;
D-3
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