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While PCBs are still in use awaiting replacement, management should ensure that all steps are taken to prevent PCB's affecting their staff and entering the environment.
PREVENTATIVE MAINTENANCE IS ESSENTIAL TO ELIMINATE OPERATIONAL AND EVIRONMENTAL HAZARDS
PRECAUTIONS AGAINST LEAKS OR SPILLS IN SERVICE EQUIPMENT
At all locations where PCB-filled equipment is located the following steps should be taken:
- Warning notices are placed near drain valves on transformers.
All drain valves are securely closed in a way that will prevent inadvertent or unauthorised opening.
- Regular inspection is undertaken to look for early signs of weeping or leakage.
- Spill containment measures such as curbs or dykes, metal drip trays, or absorbent mats should be fitted to installations.
- Floor drains should be arranged so that PCB oil interceptor tanks are fitted before the drain reaches natural outfalls or sewers.
REMEMBER THAT PCBs ARE HEAVIER THAN WATER.
Facilities for recovery and clean up work must be available.
A contingency plan should be prepared and known to all staff.
STORAGE OF PCB's
Storage is required for a wide range of PCB materials:
- Discarded articles such as capacitors and transformers, PCB liquid wastes drained from equipment and collected from drip trays.
- PCB-contaminated materials such as soil, absorbent material, clothing, rags, and handling equipment.
- Storage installations must be well away from food processing/preparation facilities.
Drum Storage
PCB materials should be stored after being packed in heavy duty steel drums with close fitting lids. Solids and liquids should be stored in separate drums. Storage drums should comply with UN Standard 1A1.
The drums should be clearly labelled and numbered with details of:
- Type of PCB if known.
- Type of solid contaminated material, oil, rags, soil, sawdust, clothing, etc.
- Percentage of PCB and solvent (where totally in liquid form).
- Weight of the waste.
- Origin or source of the waste.
- Transformer type and serial number if applicable.
- The Hazchem emergency information label should also be attached to each drum of PCB waste during storage and transport.
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