The aim of this unit is to reflect the national occupational standard for supervising entry and arrangements in a confined space. This unit covers both water and non-water industry areas.

Water: this may include working with potable water, sewage treatment processes, drain and sewer cleaning operations, or where the operative works in or near water or where confined space is subject to surface water flooding.

Non-water: this may include pharmaceutical, petrochemical, asbestos removal, vehicle manufacture and servicing, aeronautical, construction, communications, power, utility gas, electrical and mechanical engineering, and some elements of work operations in mines, quarries, and tunnelling