Copied with permission from Appendix A5 CIRIA C735 – H. Mallett; L. Cox (nee Taffel-Andureau); S. Wilson; M. Corban, 2014. Good Practice on the Testing and Verification of Protection Systems for Buildings Against Hazardous Ground Gases, CIRIA, C735, London.

 Visual Inspection of Gas Protection Measures

Visual Inspection of Gas Protection Measures page 1