Rank: Forum user 
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I am helping with the planning of entry into an open interceptor for annual cleaning; it is classed correctly as a confined space by the client involved as the interceptor contains residues of hydrocarbon fuels. The interceptor is large - about 10 meters square and 6 meters deep, the client has a permanent fixing point for a hoist that protrudes only 1 meter over the rim of the interceptor. Can anyone share any information they have on such an operation and in particular in creating an emergency plan for such an operation including the rescue element? In my opinion the hoisting point does not seem adequate to cover the whole area if required.
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Rank: Super forum user 
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Do you actually need to go in? Does it have to be spotless clean. Remember Confined Space regs say avoid entry if possible.
Quote from a interceptor cleaning company:
"Interceptor cleaning and maintenance is an important part of all site utility and environmental systems.
We provide specialist pumping equipment to ensure the safe removal of all oil, water and sludge. For total cleanliness we can also high-pressure jetwash the interceptor"
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Rank: Forum user
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Unfortunatly its a major clean so entry is required, we did look at completing without entering.
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Rank: Super forum user 
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What is the construction? I'd be wary of pressure-washing an interceptor of older brick built vault construction lest you disturb the mortar. A (presumably) single stage interceptor of square cross section suggests an older type.
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Rank: Forum user
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Rank: Super forum user
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Doh! Just read "open interceptor". Sorry!
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Rank: Super forum user 
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In addition, there may well be the potential for the presence of an explosive atmosphere!
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