A confined space has limited or restricted means for entry or exit. Confined spaces include, but are not limited to, underground vaults, tanks, storage bins, manholes, pits, silos, process vessels, and pipelines. What kind of danger might this cause for a worker?

Select all that apply.

Oxygen deficiency

Hydrogen sulfide

Welding fumes

Carbon monoxide

Claustrophobia Or all of them

Since the environment is confined and has restricted means for exit and entry , the worker are prone to suffer oxygen deficiency. Oxygen in the atmosphere is about 21 % but the confined nature of the area will limit the movement of oxygen gas which is essential for humans.

Hydrogen sulfide(H2S) gas are usually dominant in a poorly ventilated area. The confined nature of the zone, including the pipelines can harbor this gas. The gas is colorless, has a rotten egg smell and very dangerous to human health.

The workers are also prone to welding fumes because the poorly ventilated nature of the environment will limit the movement of this fumes.

Carbon monoxide are mostly form when their is limited oxygen. since the area is confined ,carbon will react with the limited oxygen to form carbon mono oxide (CO).

Claustrophobia is the fear of confined spaces. since the area is confined and has limited entry and exit point workers are bound to suffer claustrophobia.