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Confined or enclosed spaces may present
hazards such as
oxygen-deficient or -enriched atmospheres,
flammable atmospheres,
toxic atmospheres,
or a combination of these. Employers must
ensure that work can be performed safely before permitting employees to
enter these spaces.
During preparation for entry and work, shipyard personnel must consider safety
issues including: isolation of piping systems, electrical hazards, illumination, ventilation, means of access
(such as ladders), fall protection, and other potential hazards. A Marine Chemist or
Shipyard Competent Person (SCP) must then conduct testing and a visual
inspection.
Only Marine Chemists, Shipyard Competent Persons (SCP), and Certified Industrial
Hygienists may evaluate confined and enclosed spaces.
Pre-entry evaluation should include the following:
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