PREVIEW: Confined spaces in construction high risk

This preview is for ATO use. This standard is about safe entry into confined spaces with non-standard, hazardous entries which, in consequence, makes rescue difficult.

This standard is available to ATOs to preview before it’s finally published. You should make sure your course matches these details. This standard will eventually supersede the existing standard in development. 

Until then, continue to publicise your courses against the existing title on the Construction Training Directory.


Minimum three days of 6 learning hours per day


This standard is about safe entry into confined spaces with non-standard, hazardous entries which, in consequence, makes rescue difficult. Entry may involve complex entry procedures with work-specific controls and rescue arrangements.

It will entail the use of self-contained open circuit breathing apparatus, specialist detection equipment, resuscitation equipment, and will require the presence of personnel who have designated responsibilities for dealing with emergencies.

The scope of this standard covers:

  • specified risks, risk assessment
  • safe systems of work, permits to work
  • roles and responsibilities (e.g. top man/bottom man duties)
  • atmospheric hazards and gases
  • principles and use of gas detectors
  • inspection and use of escape sets and working breathing apparatus
  • pre use checks, correct donning and adjustment of harness
  • inspection and applications of tripods, winches and fall arrest equipment
  • emergency procedures 
  • practical exercises and assessments.

Occupational relevance

Training delivered against this standard would be relevant to the following occupational group(s):

  • operative and craft
  • supervision.

Candidate pre-requisites

Candidates need to have previous experience of working in confined spaces and attended low/medium risk training. Candidates need to be over 18, in good health and physically fit.


As a minimum, course instructors must be able to demonstrate that, in relation to this standard, they have:

  • a train the trainer or instructional techniques course certificate
  • successfully completed training to this standard 
  • at least 2 years relevant industrial experience as a fitter
  • a verifiable CV.


Delivery may be in an on or off the job environment and will include opportunities to practice using specialist personal protective equipment (PPE) in confined spaces.

All materials and equipment must be of a suitable quality and quantity for candidates to achieve learning outcomes, and must comply with relevant legislation.

The class size and candidate/instructor ratio must allow training to be delivered in a safe manner and enable candidates to achieve the learning outcomes.

The following delivery methods may not be used in the delivery of this standard:

  • e-learning
  • classroom
  • workshop.

This standard is considered to contain 51 per cent or more practical training.


For the successful completion of training, candidates must complete an end of course practical assessment or knowledge test that measures the learning outcomes and has a pass or fail criteria.

Quality assurance

Quality assurance against this standard will require initial approval of the training organisation and their content mapped to the standard. 

CITB will also conduct an approval intervention, either desk-based or centre visit, to ensure the training organisation can meet the requirements of the training standard. 

Approved training organisations (ATOs) will be required to present information on records of training and assessment upon request to CITB for desk based analysis. They will also be visited annually by the CITB quality assurance team.


Recommended refreshment: Health & Safety Executive (HSE), other relevant codes of practice or industry card scheme criteria recommend that the candidate completes a refresher of his/her training, (i.e. to ensure their knowledge and/or skills are up to date) every 3 years.

Approval date

To be confirmed

Review cycle

Either on request or in 3 years from approval date.

Learning outcomes

The candidate will be able to:

  • prepare to work safely in high risk confined spaces
  • enter and exit high risk confined spaces safely
  • describe specific roles and responsibilities (e.g. top man/bottom  man)
  • use specialist PPE including masks, harnesses, hoists, gas detectors, self-contained open circuit breathing apparatus
  • deal with emergencies
  • use appropriate behaviour when working in high risk confined spaces
  • apply appropriate industry specific knowledge for working in high risk confined spaces.

Additional information about this standard

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