Maintaining Critical High-Voltage Assets for a Major Water Treatment Facility

Outcome

A leading UK water utility successfully completed its four-yearly high-voltage inspection, testing and maintenance programme, ensuring the continued reliability, safety and performance of critical electrical assets across a live operational facility.

Power Testing Ltd (a MARCH company) delivered a comprehensive maintenance and testing programme, helping minimise operational risk, maintain compliance and support uninterrupted service delivery. The project was completed safely, on time and to industry standards.

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Key Results

Four-yearly HV inspection and testing programme completed successfully.
3 transformers maintained.
3 ring main units (RMUs) maintained.
11 protection relays tested.
1 gas circuit breaker maintained.
All testing completed to industry standards or better.
Works delivered within agreed timescales and deadlines.
Minimal disruption to the live operational facility.

Challenge

The customer required specialist high-voltage engineers to carry out statutory four-yearly inspections, testing and maintenance of critical electrical assets within a live operational environment.

The project demanded careful safety planning, management of equipment isolations and coordination with multiple stakeholders to ensure works could be completed safely while minimising disruption to essential operations.

The Solution

Power Testing Ltd (a MARCH company) delivered a planned maintenance and testing programme covering a wide range of high-voltage infrastructure and protection systems.

The scope included:

Protection testing.
Battery maintenance.
General substation maintenance.
Oil-insulated transformer inspections.
Air-insulated transformer maintenance.
Gas circuit breaker maintenance.
Cable end box inspections.
Ring main unit (RMU) maintenance.
LV and primary circuit inspections.

The team managed all safety planning, RAMS documentation, DNO coordination, testing, commissioning and reporting, ensuring safe execution and full compliance throughout the project.

Delivered By

High Voltage Engineering
Protection Testing
Transformer Maintenance
Substation Maintenance
Testing & Commissioning
Project Management

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