RAMS for Confined Space Entry — UK

UK construction-safety guidance by the Riskora Editorial Team

Confined spaces kill quickly and without warning. Toxic atmospheres, oxygen depletion, and engulfment hazards claim lives every year in the UK — often killing would-be rescuers as well as the original entrant. If your team is about to enter a manhole, tank, sewer, trench, or any enclosed space, you need a RAMS that covers atmospheric monitoring, rescue procedures, and permit-to-work systems.

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Example RAMS

RAMS for Confined Space Entry — UK

  • Definition of the confined space and reason for entry
  • Pre-entry atmospheric testing (O₂, LEL, CO, H₂S as minimum)
  • Continuous atmospheric monitoring during entry
  • Ventilation arrangements (forced or natural)
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When This Document Is Required

The Confined Spaces Regulations 1997 require employers to avoid confined space entry wherever possible. Where entry is unavoidable, a safe system of work must be established before anyone enters. A RAMS is the standard mechanism for documenting this safe system of work. Under CDM 2015, confined space work is treated as high-risk and requires specific planning, competent supervision, and emergency rescue arrangements. The RAMS must be in place, briefed to all entrants, and a permit-to-work issued before any entry occurs.

What Must Be Included

  • Definition of the confined space and reason for entry
  • Pre-entry atmospheric testing (O₂, LEL, CO, H₂S as minimum)
  • Continuous atmospheric monitoring during entry
  • Ventilation arrangements (forced or natural)
  • Permit-to-work system and authorisation chain
  • Emergency rescue plan with trained rescue team on standby
  • Communication systems between entrant and top person
  • PPE and RPE requirements (BA sets where necessary)
  • Competency requirements for entrants, top persons, and rescue team
  • Isolation of services, pipework, and mechanical hazards

Common Mistakes to Avoid

  • Entering without pre-entry atmospheric testing — even for 'quick jobs'
  • Not having a trained rescue team on standby (never rely on fire brigade response times)
  • Failing to continuously monitor the atmosphere during the entire entry
  • Using the wrong gas detector or not calibrating equipment before use
  • Not issuing a formal permit-to-work for each entry
  • Attempting improvised rescue without proper training or equipment

Example Scenario

A utilities contractor in Glasgow needs to enter a 3-metre deep manhole to inspect and repair a sewer connection. The space has not been entered for over a year and there is potential for hydrogen sulphide accumulation. The client requires a confined space RAMS and permit-to-work before entry. Using Riskora, the supervisor selects the confined space preset, adds atmospheric monitoring and rescue procedures, specifies BA set requirements, and generates the RAMS in under 5 minutes — ensuring the rescue team is briefed and standby equipment is confirmed before anyone descends.

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Final RAMS must be reviewed and approved by a competent person before use.

Riskora is an assistive document preparation tool. All documents generated must be reviewed, verified, and approved by a competent person before use on site. Riskora does not replace professional safety judgment, and no output should be treated as a legal compliance guarantee.