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PAS128 surveys and service avoidance for site investigation

Event date: June 15, 2021

Missed the webinar? Watch again below.

Tuesday, 15 June, 12:30–13:15

The danger from buried services is a major health and safety concern during intrusive site investigation work. RSK’s guidance on the avoidance of buried services, which puts in place a robust safe system of work with procedures taken from best practice as set out in the Health and Safety Executive’s document HSG47 and from PAS128, has helped the ever-expanding RSK group to reduce the number of service strikes significantly.

PAS128, the UK specification for underground utility detection, verification and location, is currently being reviewed and updated and one addition in discussion is the inclusion of on-site, ground-penetrating radar (GPR) utility-mark-out surveys for the avoidance of services when undertaking intrusive site-investigation work. This addition would benefit the site investigation by providing auditable surveys with recorded GPR, clarity on the deliverables and transparency of the work undertaken, giving protection to the client through recourse for a performance failure.

RSK SafeGround has been undertaking GPR service-clearance work to this specification since PAS128 first came out in 2014, for both internal RSK group companies and external clients.

This talk will demonstrate in detail what these procedures are, why we follow them and how this sets the RSK group apart from the competition.

Gerwyn Leigh BSc MSc CSci FGS, Associate Technical Director and Chartered Scientist, leads the SafeGround department, part of the RSK Geophysics consultancy team. Gerwyn has been with RSK for over 11 years and has over 17 years’ experience in utility mapping, service clearance and GPR and other geophysical techniques. SafeGround specialises in GPR service clearance and full GPR utility mapping surveys to PAS128 specifications.

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