Case Studies

IUS has documented a selection of completed works, outlining practical examples of solutions we have provided for our client’s. Our aim is to add value and repeat business with our customers and also be ideally positioned to do the same for you.

Northern Ireland Electricity

CUSTOMER NAME:

Northern Ireland Electricity (NIE)

THE BRIEF:

NIE has an extensive overhead line network and required considerable 11kV and 33kV wood pole construction and maintenance. A significant additional requirement was for the replacement of substandard low voltage under eaves conductors.

THE SOLUTION:

IUS based its headquarters in Ballymena and from this location operated throughout the province. We integrated with NIE and, as well as overhead line refurbishment, we would survey, negotiate wayleaves, design and construct new high voltage overhead lines. Specialist teams were also set up to successfully deliver the low voltage under eaves programme.

THE RESULTS:

Over a number of years excellent client relations were forged. The NIE management team recognised our capability and diversified the scope of works to be delivered. We employed up to 150 staff, many recruited and trained locally.

Yorkshire Water

CUSTOMER NAME:

Yorkshire Water

THE BRIEF:

Yorkshire Water had expansion plans for Esholt Waste Water Treatment Works. The aim was to improve the quality of water entering the River Aire. To facilitate the improvements a new high voltage intake position was required.

THE SOLUTION:

IUS were actively involved in the design, supply and installation of an eight panel 11kV incoming switchboard, two new substations and the replacement of four existing oil filled ring main units. Two transformers on site were also upgraded by fitting oil temperature indication and replacing the insulating oil with Midel.

THE RESULTS:

Yorkshire Water has an effective processing plant. IUS has been actively involved in the installation of high-tech telecontrol units for remote operation as well as automatic fault restoration. This is an ideal solution to this 'super critical' site.

York University

CUSTOMER NAME:

The University recently had the supply upgraded from the local Distribution Network Operator and also required the existing site distribution system to be increased in capacity to meet the demands of their expanding campus. Safety and continuity of supply were paramount.

THE BRIEF:

IUS provided and installed a new 12 panel 11kV composite switchboard to integrate with the existing distribution system.

THE SOLUTION:

IUS supplied and installed a new 800kVA, '20' ,000/433V transformer coupled with an external Ring Main Unit and LV distribution cabinet. To overcome the problem of access the services of a specialist lifting company were employed to facilitate the positioning of the transformer which had to be craned over the University's buildings.

THE RESULTS:

IUS's skill in project management enabled us to co-ordinate the works with third parties. Robust programming of all site works, particularly in the commissioning and decommissioning phases resulted in the works being completed on time and to high safety standards.

Wm Morrison Supermarkets

CUSTOMER NAME:

Wm Morrison Supermarkets

THE BRIEF:

Wm Morrison required a high voltage contractor that they could rely on for inspection and maintenance as well as emergency repairs. The necessity is linked to keeping store supplies operating to maximum efficiency. The service would be provided for up to 94 sites.

THE SOLUTION:

IUS are employed under an Operational Maintenance Agreement to carry out a range of activities including substation inspections, switchgear maintenance, transformer oil analysis, protection testing, fault diagnosis, location & repair, battery maintenance and where appropriate non-intrusive maintenance techniques.

THE RESULTS:

Wm Morrison are safe in the knowledge that their high voltage apparatus is effectively inspected and maintained to the latest standards including any defect rectification. IUS also control and operate the networks and control all related safety documentation.

West Auckland

CUSTOMER NAME:

George Wimpey North Ltd

THE BRIEF:

144 plots of domestic accommodation were required to be serviced with electricity, water and gas. These utilities were to be designed, installed, tested and commissioned to adoptable standards by the appropriate authorities.

THE SOLUTION:

IUS provided the complete multiutility service including all the requirements of the various statutory intermediaries. All planning, liaison, project management and service delivery was completed by the experienced IUS team.

THE RESULTS:

The project was completed with the customer safe in the knowledge that three into one really does go and makes sound business sense.

University of Leeds

CUSTOMER NAME:

University of Leeds

THE BRIEF:

The University required their ageing high voltage oil filled switchgear to be replaced with modern 11kV apparatus at 15 substations, including a number of transformer changes. On completion of the works an Operation & Maintenance Contract would be required.

THE SOLUTION:

By IUS completing the switchgear replacement works we were able to test and commission the apparatus and place the network under our immediate control. Within the Operation & Maintenance Contract IUS can carry out a range of activities including substation inspections, switchgear maintenance, transformer oil analysis, protection testing, fault diagnosis, location & repair, battery maintenance and, where appropriate, non-intrusive maintenance techniques.

THE RESULTS:

This project gave IUS the opportunity to provide a complete service, which the University is delighted with. Since completion of the installation works, IUS have carried out substation inspections, transformer oil sampling and authorised personnel for control of safety documentation.

University of Hull

CUSTOMER NAME:

University of Hull

THE BRIEF:

The long term security of electrical supplies to the Cottingham Road campus is of paramount concern to the University of Hull. This vision of greater security included the replacement of ageing oil filled switchgear and transformers with modern, safer and more reliable variants.

THE SOLUTION:

Through close contact with the University's engineering department, IUS were able to design a solution that would prioritise the replacement of key substations. Old 11kV oil insulated switchgear was replaced with new SF6 apparatus at Ferens Intake, Larkin and Fenner Substations plus transformers were replaced at the same locations. The project also included the addition of two new permanent substations at Ryton Theatre and Hardy Building as well as the addition of a temporary substation at the Library Building following flood damage during June 2007.

THE RESULTS:

This extensive project has been completed over a number of years and much of the work was done during academic periods. Therefore the work had to be co-ordinated carefully to ensure the safety of the students around the campus as well as minimising power outages. The project was completed in early 2008 ahead of time and with minimal disruption to the students and staff of this large university campus.

United Utilites

United Utilites Service Provider

CUSTOMER NAME:

United Utilities (UU)

THE BRIEF:

UU required a contractor to deliver electrical infrastructure works over a five year period. The services would mainly consist of 6.6kV & 11kV substation replacement and low voltage network replacement work. Other activities required included 11kV distribution system automation, high voltage underground reinforcement and high voltage overhead line refurbishment.

THE SOLUTION:

IUS operated out of two locations in the North West of England, Preston and Preesall. Geographically the work encompassed the three areas of Lakeland, Lancashire and Manchester. The management team together with Senior Authorised Persons, Design Engineers, Fitters, Cable Jointers and Linesmen were provided via our own 'in-house' staff.

THE RESULTS:

In total IUS employed approximately 40 staff plus a number of subcontractors. We delivered the contract successfully and achieved an excellent working relationship with the client. In addition to the original brief we also carried out high voltage maintenance work and low voltage service alterations.

Melton Wind Farm

Penistone

CUSTOMER NAME:

Barratt Homes (Sheffield)

THE BRIEF:

Barratt Homes require utility services connecting to 270 domestic properties on a development site at Penistone near Barnsley. Included within the brief was the opportunity to consider a Multi Utility approach.

THE SOLUTION:

IUS are providing a complete multi utility package that includes design and installation of Gas, Water and Electricity utilities in a common trench. This approach reduces excavation costs, utility installation times and also allows the control of risk on site to be made easier.

THE RESULTS:

IUS are managing the whole project from initial enquiry through to the connection of the individual meters at each property. We provide a single point of contact for the Barratt Homes Site Manager to meet his utility requirements.

Northumbrian Water

CUSTOMER NAME:

Northumbrian Water Ltd

THE BRIEF:

Key to Northumbrian Water's business is the necessity for essential supplies to be available 24/7. Therefore an inspection and maintenance service provider for their high voltage apparatus, with an emergency repair capability, is a vital requirement. This service is needed for 40 sites.

THE SOLUTION:

IUS are employed under a Contract Maintenance Agreement to carry out a range of activities including substation inspections, switchgear maintenance, transformer oil analysis, protection testing, fault diagnosis, location & repair, battery maintenance and where appropriate non-intrusive maintenance techniques.

THE RESULTS:

Whilst Northumbrian Water can utilise their core skills for the day to day running of the pumping stations, water treatment works and sewage treatment works, IUS can provide the expertise for their high voltage networks.

Marshall Construction, Liquorice Park

Liquorice Park

CUSTOMER NAME:

Marshall Construction (West Yorkshire) Ltd

THE BRIEF:

Two substations were required at a commercial and industrial complex in Manchester's Trafford Park. The network would service three sections of what was originally called Liquorice Park. Marshall Construction decided to place this contestable work out to competitive tender to a number of bidders.

THE SOLUTION:

IUS designed, supplied, installed and commissioned two 6,000/433 volt substations together with associated cables. All apparatus was procured and installed to United Utilities adoptable standards.

THE RESULTS:

IUS completed this high-profile contract to timescales with excellent performance on safety, quality and cost.

Hydro Polymers

CUSTOMER NAME:

Hydro Polymers

THE BRIEF:

Hydro Polymers had previously identified partial discharge activity and requested IUS to complete a survey to determine any increase in severity.

THE SOLUTION:

IUS have considerable expertise and experience of non-intrusive investigation techniques. Utilising a Partial Discharge Locator and Ultrasonic Detector, IUS were able to identify and pinpoint discharge activity. Significantly an alternative discharge source was also identified in the process.

THE RESULTS:

IUS have been able to make a recommendation to carry out a high intensity light source inspection with subsequent remedial action. The project highlights the benefits of partial discharge testing as part of potential fault finding or for non-intrusive maintenance requirements.

Durham University

CUSTOMER NAME:

The University of Durham

THE BRIEF:

Expansion plans at the University of Durham required the electrical supply to be upgraded. However the existing substation was located in a pedestrian only area that was not accessible to vehicular traffic for unloading.

THE SOLUTION:

THE RESULTS:

Significant logistical problems can be overcome with good, experienced project management. The university is certainly pleased with our performance.

Dewsbury Hospital