| Recommendations |
- Observe personnel safety precautions during all procedures (Tables 6and 8).
- Wash down and/or scrape drip pads at regular intervals to prevent accumulation of preservative residues. (The cleanup frequency should be determined by site-specific factors including the probability of worker exposure, vehicle traffic and washdown by rain.)
- Recover and reuse drainage from drip pads or provide appropriate treatment or disposal.
- Provide appropriate treatment for washwater (if applicable).
- Routinely inspect sludge levels in all tanks and clean out if necessary.
- during cleanup, inspect gauge floats or similar equipment within tanks.
- Routinely inspect treatment cylinders for sludge accumulation and clean if necessary:
- Purge cylinders with fresh air sufficiently to permit entry.
- If airborne concentrations are unknown, at, or above TLVs, the attendant should wear self-contained breathing apparatus, impermeable gloves, boots and coveralls.
- A standby attendant should always be present and continuous communication should be provided.
- Follow standard safety procedures for entry of confined spaces.
- Prevent skin contact with sludge.
- Collect, drain and store contaminated material in sealed drums pending disposal (Tables 11and 23).
- The attendant should shower immediately after cleaning retorts or tanks.
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