Which confined space training do you need?

For businesses working in confined spaces it is crucial to have current and relevant training. Especially since in the last year there has been a significant rise in the cost of Health and Safety fines for businesses that are not adhering to regulations.

The Health and Safety Executive (HSE) fines have risen at a rate of 74% and local authority at a staggering 1,870%.

Confined Space Services (UK) Ltd offer nationally accredited Site Safety Plus, NEBOSH and IOSH, NC1-NC4 confined space training courses to accommodate all businesses’ needs.

Differences of NC1 and NC4


Confined Space Classification

Confined Space Services level NC1 Specification

  • NC1 course is necessary for operatives entering and working in a low risk environment with adequate natural or mechanical ventilation
  • Access appears simple and unobstructed and there is no likely risk of flooding
  • There should be easy access openings, using a gas detector, where standing up in an alarm situation would render them safe

Examples of a NC1 environment are: meter pits, valve chambers, booster pumping stations and PRV chambers.

Confined Space Services level NC2/NC3 specification

NC2 Medium Risk Confined Spaces

  • Vertical direct unobstructed access with continuous attachment to a man riding hoist or similar mechanical rescue devise.

NC3 Medium Risk Confined Spaces

  • When it is not possible to have persons permanently attached to a safety line. Usually it will be a team entry which moves away from the entry point. This situation can be, man entry sewers, utility service subway tunnels, aqueducts and complex wet wells. Working without an attached rescue line and includes working away from the point of entry.

NC2 and NC3 Specifications

  • Working in confined space environments where there is a medium risk that a specified hazard may be present.
  • It will involve the presence of one or more people – positioned outside the confined space – who have designated responsibilities for controlling the entry and dealing with emergencies.
  • NC2 and NC3 is required to enter any tank, chamber, or room that has a restricted air flow but would expect the atmosphere to at least start off as safe

Confined Space Services Level NC4 specification

NC4 High Risk Confined Spaces

A NC4 is for non-standard entries involving complex operations which introduce additional risks and require specific control and rescue arrangements.

  • This allows entrance to all classifications (NC1, NC2, NC3 and NC4) and includes entrance wearing full breathing apparatus to carry out the task in hostile environments.
  • These can come from mechanical hazards, physical complexity of system introduced hazards and enhanced specific intrinsic hazards (Note: All operatives must be trained in the use of full breathing apparatus).
  • Entry may involve complex entry procedures and there will be work-specific controls and rescue arrangements.
  • It will require the presence of personnel who have designated responsibilities for dealing with emergencies.

Confined Space Training

Confined Space Services provides a range of training courses.

Fully trained with over 20 years’ experience and with Site Safety Plus, NEBOSH and IOSH accreditation, you can be assured our consultants offer only the best advice and service possible.
We can carry out training either on-site throughout the UK, or at our purpose built training facility where we can provide a number of different scenarios depending on your requirements.

For more information on our training courses click here.

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