Risk Assessment for Confined Spaces

A Confined Space is any space where due to being enclosed there are specified risks, these can be Manholes, Pipelines, Tanks etc.

Carrying out a Risk Assessment for proposed works within a confined space is the only way to check all possible risks associated by the work and type of confined space

and to establish controls to reduce those risks. The example below covers the basic risks and the controls required. Once the Risk Assessment has been completed it’s a good idea

to write a safe work method statement and use this alongside the risk assessment to brief all persons involved.

Sewer access
Confined space inside a manhole

This example can be purchased in its complete form HERE  

Activity-what is the Hazard? Harm: who or what? What are you already doing To reduce Risks?
Loss of consciousness due to gas/lack of oxygen All persons entering a confined space Fully trained confined space trained persons only.
    Use of Fully up to date calibrated gas detector
    Use of escape sets, winch and harness with fully trained “top” persons who are strong enough to winch unconscious persons up to air fresh air.
Previous Contents: – Information about previous contents required, has space been cleaned. Persons entering and near to work area .
Residues:- Chemicals, rust All persons entering a confined space Assume disturbance of residues, ensure safe system of work.
Contamination:-Possible leakage from adjoining installations etc. All persons entering a confined space Gas detection,Checking possible storm water ingress.Check work area by competent person.
Oxygen deficiency/enrichment All persons entering a confined space Test the work area air using calibrated detector.
Physical dimensions of confined space All persons entering a confined space   Assess the size of work areas as ventilation methods may vary. Possible contamination of air from exterior operations considered (e.g. welding, cleaning chemicals.
Isolation All persons entering a confined space   Safe system of work to check that substance’s From nearby processes are prevented from entering the confined space. This can include shutting and tagging valves etc.