CS3H – Working in High Risk Confined Spaces

Course Aim:

Working in confined spaces exposes an individual to a range of potential hazards, some of which may threaten injury and, in some instances may possibly lead to death. Therefore specialist training and assessment is required to equip those undertaking this type of work with the necessary skills and competencies to assess risk, control hazards and work safely.

This course is about working in confined spaces which have non-standard entries and which, in consequence, makes rescue difficult. It is likely that a hazard will be present at some time during the entry. Entry may involve complex entry procedures and there will be work-specific controls and rescue arrangements. It will entail the use of self-contained open circuit breathing apparatus, specialist detection equipment, and resuscitation equipment. It will require the presence of personnel who have designated responsibilities for dealing with emergencies.

Learning Outcomes:

  • Prepare to work safely in High Risk confined spaces
  • Enter and exit High Risk confined spaces safely
  • Prepare and use self-contained open circuit breathing apparatus in accordance with manufacturers specifications
  • Use equipment and tools safely and in accordance with manufacturers instructions
  • Follow procedures and work safely
  • Deal with emergencies
  • Use appropriate behaviour when working in High Risk confined spaces
  • Use general knowledge for working in High Risk confined spaces
  • Apply appropriate industry specific knowledge for working in High Risk confined spaces


Course content includes:

  • Definition of a confined space & Water UK NC1-NC4 classifications & Low, Medium, High definitions
  • Specified Risks
  • Duties under the Regulations, preventing the need for entry.
  • Risk Assessment and hazard identification
  • Atmospheric hazards and gases
  • Principles and use of gas detectors
  • Safe systems of work & permits to work.
  • Roles, responsibilities and topman / bottom man duties
  • Inspection and use of  escape sets and working breathing apparatus
  • Pre use checks, correct donning & adjustment of harness
  • Inspection and applications of tripods, winches and fall arrest equipment
  • Practical exercises and assessments

This course is assessed by:

  • Direct observation of an entry into a High Risk confined space
  • Written test


Course Duration: 20 guided learning hours i.e. 3 days

Type of Certificate: Competence based, valid for 3 years

Accreditations: CABWI, C & G, Energy and Utility Skills

Min/Max Persons on Course: 6/8

Additional information for those in the Water Industry:

The standards identified in Qualifications for Working in Confined Spaces: Water (6150) City & Guilds do not relate to a training course. However it is unlikely that without the appropriate training the relevant assessment would be achieved in this case 6150-03 applies. This course provides the required learning and assessment standards to allow those that require the qualification to be assessed.

Course Enquiry:

Call 01925 244 144
Email info@csts.co.uk