Southampton Ground Gas Protection
Verification And Validation Services

Inspection services for all application techniques, monitoring independently from the manufacturer.

Good practice for verification of ground-gas protection measures has been brought together within a new key guidance document (CIRIA C735, 2014). This guidance is written for designers, installers, verifiers and regulators. All GeoShield staff operate in accordance with the relevant UK standards of good practice and show a focus on the following points of guidance as stated in CIRIA C735, 2014:

Mandatory Requirements For Gas Membrane Testing

In 2015 the British Standard for Good Practice on Gas Membrane Testing and Verification of Protection Systems for Buildings against Hazardous Ground Gases was updated, BS 8485:2015+A1:2019 supersedes all previous guidance.

BS 8485:2015+A1:2019 operating alongside the CIRIA 735 code of practice states Independent Membrane Verification and Testing Programs are as important as the design and installation process.

Many Contractors are unaware of the advances put forth by the British Standards and CIRIA and to how projects may fail to meet current requirements; GeoShield Limited ensure contracts are in accordance with:

BS 8485:2015+A1:2019 sets the codes of practice which govern the installation of ground gas protection membranes. Dependent on the various project risks and criteria independent inspection is mandatory.

GeoShield provides gas membrane testing and verification requirements from inception to completion.

An Independent Testing and Membrane Verification program is required as an integral part of the project strategy, back-up documentation needs to be in place and hand-over package included in the final documents.

For more information Property Care Association Code of Practice for the Protection of Structures from Ground Gases

The Verification Process

CIRIA 735 states that the verification plan (which includes consideration of the need for any integrity testing) becomes an integral part of the design of the gas protection system. As each project is unique in terms of size, construction type and ground gas protection system the GeoShield service of Verification follows the most up to date industry guidelines, with a focus on 6 obligatory components, whilst creating a bespoke, distinct and precise solution for the client:

The Verification Strategy

Good practice for verification of ground gas protection measures has been brought together within a new key guidance document (CIRIA C735, 2014). This guidance is written for designers, installers, verifiers and regulators and clearly defines that Verification is as important as design and installation and should not be ignored. A risk-based approach to verification is required and an independent third party is to be used for verification to avoid conflicts of interest. The Verification Monitoring Process included in the Strategy adheres to the following:

The Verification Report

The GeoShield Verification Report is a user friendly document published in hard copy, cloud link, instant email and flash drive. The final report is a concise document that relates to the history of the Ground Gas Protection System application process. The final report will have:

The Testing Protocol

The testing protocol is determined at the Verification Plan stage, at this point the risk to health is evaluated and the specific system performance tests are decided, these may include:

For more information on the
GeoShield Design, Validation, Independent Testing And Verification Program

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Contact our Southampton team today to book your gas protection systems verification inspection