HSE Surface Supplied Top-Up Practice Questions - HSE Surface Supplied Top-Up Offshore Diver Qualification (UK Health And Safety Executive) Exam

It prevents catastrophic helmet depressurization and squeeze if the main supply umbilical is severed or depressurized It diverts exhaled air directly into the hot water suit to maintain thermal insulation It automatically regulates breathing gas supply pressure to match ambient water depth It isolates the reserve bailout cylinder from the surface supply manifold during normal diving operations