MIL-HDBK-1003/1
APPENDIX H (Continued)
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. Designer to revise the wording to correctly indicate the discharge destination and if it passes through a treatment system 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 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. Segregate hexavalent chromium wastes, including ES/EWS drainage, from all caustics
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