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Part of: Specialist Earthing

Verification of an existing HV and Primary LV Earthing arrangement at a well-known chemical business.

PTSG Electrical Services Ltd. was tasked with carrying out on-site testing and inspection of the HV and Primary LV earthing arrangements. This included ATEX hazardous areas to ensure that the functional and safety criteria within BS 7430 and BS EN 50522, i.e. permissible stress, touch and step potential limits were not exceeded.

The work involved the measurement of site-based equipment, along with soil resistivity surveys and the production of an overall design assessment including associated calculations, to ensure compliance with the above standards. Following completion of the testing, the development of a risk-based, time-bound action plan to resolve any non-compliances that were identified. After completion of the assessment/calculations, the relevant inspection, test and maintenance documentation was produced to reflect the calculated maximum allowable earth resistance values complete with recommended pass and fail criteria.

From the start, working through historic site data and site information to the completion of the ITM documentation, PTSG Electrical Services Specialist Earthing Division completed the work on budget and within the allotted time frame.

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