- Pipelines in pumproom may contain cargo under high pressure, during the time that personnel are present in the space. There is therefore the possibility that failure of a line will result in very rapid and extensive hydrocarbon (and toxic) vapour generation, with little or no warning.
- Due to the number of valves, pumps and fittings in the pumproom and the pressures involved, there is a likelihood of leaks from seals and glands. This could accumulate in bilges and evolve vapour there.
- Vibration from pumps increases the possibility of failure of lines, fittings, etc.
- Hydrocarbon and Toxic gases may be present in any pumproom from leaking covers, seals, glands, joints or pipeline failures and from evaporation from oil accumulated in the bilges.
- Oxygen deficiency may occur if the space has been closed without ventilation for some time or if inert gas lines (or drains) pass through the space.
4.2 Generic hazards will usually result in the presence of one or more of the following:
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