The covers and guardrails are required in all of the following areas except ditches.
Yes, they do need a covers and/or guardrails and it is one that is known or shall be provided to help in the protection of personnel from the hazards that pertains to open pits, tanks, vats and others.
Note that they are often needed that is covers and/or guardrails need to be provided to help to protect personnel.
Therefore, The covers and guardrails are required in all of the following areas except ditches.
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