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This full day course provides participants with a very detailed understanding of the requirements for verifying the installation of gas protection systems.  It is an essential introductory learning package for environmental and construction professionals engaged in gas protection verification. The main focus is verifying gas membranes but it will also cover venting systems. It will also cover what to consider when specifying integrity testing or checking that correct testing procedures are followed on site.

The course is specifically targeted at consultants, contractors and other stakeholders/duty holders involved with the verification, assessment and management of gas protection systems. Each course is restricted to 8 delegates to ensure good trainer to delegate ratio for the practical work.
A certificate of attendance will be provided on completion of attendance.

Course Objectives and Learning Outcomes:

To provide participants with a detailed understanding of verification of gas protection systems following the advice in CIRIA Report C735 "Good practice on the testing and verification of protection systems for buildings against hazardous ground gases." The course has been developed and is delivered by some of the authors of C735.
On completion of the course, participants will understand:

  • The intended philosophy of C735 and background information;
  • The link between C735 and British Standard BS8485: 2015, Code of practice for the design of protective measures for methane and carbon dioxide ground gases for new buildings;
  • What verification should cover – a risk based approach;
  • Verification procedures;
  • Verification plan;
  • Visual inspection – what to look for;
  • Methods of integrity testing and main requirements for good practice;
  • The verification report.


Morning - Theory based
Afternoon - Practical demonstration
Duration 7 hours (contact time)

Please ensure that you wear strong shoes - no open toes permitted

Who should attend this course:

  • Geo-environmental consultants
  • Developers and House Builders
  • Building contractors
  • Membrane installers
  • Building surveyors
  • Building Control Officers
  • Contaminated Land Officers
  • CDM duty holders: Clients, Principal Designers and Principal Contractors
  • Property Managers

About the Trainers:

Mick CorbanMick has over 25 years experience in the construction industry, a surveyor for local authority and within the gas protection industry. Mick has sat on various CIRIA steering committees and was a contributor to the CIEH’s local authority ground gas handbook, co-authored CIRIA C735 and the recently published C801. He has extensive knowledge of all the various integrity testing procedures available, is a Gas Protection Verification Accreditation Scheme assessor and SGPV.


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