SERVICES

PAS 128 Underground Utility Detection Survey

We locate the presence or absence of underground services on sites using ground penetrating radar (GPR) and electromagnetic equipment, such as CAT and genny.

Anybody wishing to dig, should by law (HSE regulations), know what services are located below, before breaking ground. Powers underground utility detection surveys will provide you with comprehensive services locations to the required PAS 128:2022 British Standard. They show the position, type and depth of live, abandoned or redundant service networks based on PAS 128:2022 Quality Levels (QL) agreed in advance.

Quality Assured PAS 128:2022 Surveys

PAS 128:2022 is a best practice specification in the gathering of underground services data, transformed into detailed drawings or models that show the location of services underground. Underground service locations can be identified to any of the PAS 128:2022 Quality Levels based on survey type, location accuracy, inclusion of post-processing and level of supporting data. We can work with you to determine which Quality Level can be achieved in advance of the site survey.

PAS 128 Quality Levels D, C, B, A:

Survey Level	Survey Type	Relative Location Accuracy	Relative Cost
D	Desktop Utility Records Search	Lowest	Lowest
C	Site Reconnaissance	Medium Low	Medium
B	Detection	Medium High	Medium
A	Verification	Highest	Highest

Key Benefits

Complies with PAS 128:2022 quality levels D, C and B. For quality level A contact us for more information.
Powers can locate underground electricity, gas, water, sewer, cable and telecommunications services
Allows the communication of the constraints of the underground services environment
Ensures health and safety of contractors and the public, by reducing time spent on site and the risk of harm from service strikes
Knowledgeable about anomalies such as reinstatement scars, indicating where previous street works have been carried out
Utility damage minimised through clear service location identification and a clear understanding of service adoptions and diversions

Powers team conducting an underground utility survey

Deliverables

Robust, reliable 2D or 3D sub-surface surveys
Collation and on-site analysis of statutory records/guide drawings
Electromagnetic devices locate and map metallic or live buried services
Use of GPR establishes position and depth of non-metallic, fibre optic and plastic buried services
Production of a topographical base plan illustrating the position of the underground services, if requested
Accurate, scaled, colour coordinated presentation of the site as it exists
Production of a survey report outlining confidence levels

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The work Powers carried out at Lancaster Canal Quarter has enabled us to develop a consistent brief for future developers to work to, which will ensure that the character of the site remains intact.