Principal Designer – G4S Custodial Services

Key Points

  • Initial site review and hazard analysis
  • Hazard Identification documentation
  • Project-specific progress meetings
  • Guidance in development of construction phase plan
  • Health and safety performance guidance
  • Health and safety file review

Client Requirement

The Client required the existing in cell fire detection system installed within HMP Altcourse to be upgraded from smoke detection within the extract ducting to individual cell detection. This was achieved by installing an ICAM IAS Air-sampling Smoke Detection system.

Sniffer tubes were installed within each cell, at high level to prevent malicious damage and to remove any potential ligature points, whilst the pipework was installed within the existing service ducts to the plant room area within the roof space, where the pumps and air analysis equipment was installed.

Principal Designer


Fire Detection Upgrade – HMP Altcourse

Project Team
G4S Facilities Management – Principal Contractor

Callidus – Principal Designer

G4S Secure Solutions Ltd – Fire Detection Installation Contractor

Our Solution

Callidus were appointed as Principal Designer on the project and attended site for an initial review of the works with the project manager, Principal Contractor and their appointed smoke detection system installation contractor.

We carried out a review of both the proposed design and the pre-construction information previously developed by the client, we then produced a project specific hazard register which was communicated to all project team members. The Principal Contractor’s construction phase plan was also reviewed prior to acceptance, allowing the construction phase to commence.

Benefits of using Callidus

Our pragmatic approach enabled us to review internal arrangements for managing health and safety in an extremely sensitive environment, to provide guidance on specific items such as prisoner welfare during the works, and minimising the impact on sensitive areas of the prison such as the CSU.

Callidus have a proven track record in developing strong working relationships that allow Clients to trust us with sensitive projects.


Contact Callidus

For more information on our Principal Designer service please email or call 0113 385 2740 to speak with a consultant.