Westpoort VCA Eindtermen Basis, VOL, VIL VCU Engels

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Periodic or continuous

Safety measure (supervision in case of risk of suffocation, intoxication, poisoning, fire or explosion) - Exercise supervision - Maintain communication with person in room - Alert emergency departments/services if a person in the room is in danger - Check ventilation Requirement for the person charged with permanent observation (outside watch/manhole watch) Have demonstrably tested expertise Increased risk of choking Oxygen deficiency due to the presence of inert gas Too little ventilation, causing the lower explosion limit to be reached quickly - Presence of flammable substances in the room - Presence of flammable substances in the material or when removing rust layers - Open flames or sparks in the confined space - Oxygen leakage from hoses or burners that are not properly closed Increased risk of poisoning Presence of toxic substances and insufficient ventilation, which can cause the concentration to exceed the limit value Increased risk of electrocution Due to poor ventilation, the body temperature is higher and there is more humidity, which means more conduction Increased fire and explosion hazard -

Characteristics -

Narrow, small, wet, slippery and little room to move

- Not intended for the residence of persons - Hardly any natural ventilation - Difficult to access - Poor escape options - Poorly lit - Pipes and cables in unexpected places

Examples -

Storage reservoirs or tanks

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Sewers and pipes

Elevator shafts, crawl spaces and basements Tents during excavation, pipelines

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Requirements for entry -

Minimum oxygen percentage 19% Explosive gas mixture present less than 10% of the LEL Concentration of toxic substances or vapours must be lower than the limit value Warning signs for access to prevent unauthorized persons from entering Pipes connected to the room must be blinded or disconnected With a valid work permit or written release Adequate air exchange

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Entrants are 18 years or older The room is clean and dry With permanent observation

Safety measure (duration of stay) As short as possible

Rules for measurements in case of risk of suffocation, intoxication, poisoning, fire or explosion - Carried out by an expert person - In several places

Additional personal protective equipment

VCA (SCC) Final objectives | Page 46 of 66