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Contestable
Connections

IUS aim to be your contractor of choice for the installation of new substations as an accredited ICP and also any associated privately owned High Voltage network as a turnkey solution.

We offer turnkey solutions to operate as an ICP for your connection and can also carry out your private High Voltage electrical infrastructure works. This service provides real value to our customers and can also result in cost savings.

IUS are well established in the contestable connections market with over 20 year's experience since the Office of Gas and Electricity Markets (Ofgem) introduced competition into the electricity connections market transforming the way in which connections are delivered across the UK.

Today’s market affords customers the choice of seeking competitively priced connections from either Independent Distribution Network Operators (IDNOs), suitably accredited Independent Connection Providers (ICPs) or long established Distribution Network Operators (DNOs).
We operate in the competitive connections market as an ICP utilising our specialist resource and knowledge of distribution systems to deliver the very best connection solutions across the UK.

 

IUS have a range of experience in this field. Read more about our expertise.

IUS is a turnkey contractor with the capability to survey and design all aspects of substation and feeder route activity, to deliver an optimum solution. We have a documented design management process across all our business sectors including Multi Utility, Independent Connections, Primary Major Project Substations and general High Voltage Contracting activities. The process defines quality system requirements and establishes and maintains a consistent approach to the design of electrical and where required, gas and water networks.

This ensures suitably qualified and experienced staff are engaged on the design, prevailing standards are adhered to and finalised designs are checked and approved before release. Our procedure defines responsibilities and routines, which shall be applied to your contract specific designs. All personnel involved within this procedure are made aware of their responsibilities and are adequately trained and competent to undertake designs allocated to them. Staff are trained and developed in accordance with our staff selection, training and development procedure.

With an approved design in place, IUS can meet all your electrical construction needs, with the ability to competitively procure High Voltage switchgear, transformers, cables and all ancillary items required within a substation. We have the necessary experience within our design and operational delivery teams to identify the appropriate apparatus to build an effective power solution. This can be an adoptable Independent Connection; a High Voltage Distribution Network; a Primary Major Project Substation or a Multi Utility scheme. Our policy establishes the standards to ensure that all procurement activities are carried out professionally, ethically and in compliance with all laws and legislative requirements. The policy also takes into consideration our commitment to safety, the environment and the principle of total quality. The Company adopt a consistent approach to best practice procurement procedures with robust processes and systems in place.

In advance of the site works, IUS will produce the necessary site-specific documentation to meet your construction requirements. Collated via our dedicated Project Manager, this will include method statements, risk assessments, HSQE plans, delivery programmes as well as reporting templates. The on-site works will be installed with Quality Assurance applied throughout the delivery phase. Also, via our Customer Charter, we seek Feedback on your experience with IUS.

Throughout our substation construction and maintenance activities, control of electrical safety on site is a vital part of the services IUS provides. Our in-house testing and commissioning staff have a wealth of experience regarding switching tasks, issuing and cancelling of safety documentation, testing electrical protection relays and commissioning new apparatus including High Voltage switchgear, DC systems, SCADA and remote-control devices.

When carrying out works for Distribution Network Operators, installing Independent Connections, constructing Primary Major Project Substations or completing High Voltage Contracting activity, our Senior Authorised Personnel have the necessary experience, training and competency to effectively manage an electrical network safely. Our capability also extends to our Multi Utility business where we will test and commission your electricity, water and gas networks.

In addition to designing, supplying, installing and testing & commissioning your substation apparatus, IUS can Operate and Maintain your High Voltage system. As defined in the Electricity at Work Act 1989, there is a requirement for High Voltage network owners to maintain electrical equipment in a safe condition. To achieve this IUS has the High Voltage authorised, competent and experienced personnel to complete substation inspections as well as planned maintenance of switchgear, transformers and ancillary apparatus. Our High Voltage Customer Service (HVCS) manage a multitude of clients across all sectors including renewables, health, education, water, petrochemical, pharmaceutical, defence and manufacturing industries.

We also carry out a range of services for Distribution Network Operators, where our operational staff has comprehensive knowledge of Distribution Safety Rules and Operational Practice Manuals. We can also provide added value services associated with power system protection studies, generator connections, harmonic surveys, power factor correction, partial discharge testing and transformer oil analysis. As your appointed Operation and Maintenance contractor IUS will provide the High Voltage authorised personnel for both planned works as well as fault diagnosis and emergency repair. Our aim is to engage collaboratively with your organisation to satisfy all current legislation including the HSG230 requirement to keep electrical switchgear safe. This will assist in allowing staff to work safely and maximise your High Voltage asset life cycle.

Draper Yard - ASE II Temple Properties, Leeds

Temple Properties

IUS were contracted to construct a new 1000kVA, 11000/433V UDE substation comprising a transformer with close coupled 11kV ring main unit and 1600amp ACB to provide ...

Client

ASE II Temple Properties

Project

Substation, Transformer and Ring Main Unit

Location

Marshall Street, Leeds

SERVICES PROVIDED
  • Design of a new bulk LV supply
  • Liaison with DNO and IDNO for design approval, construction and build acceptance
  • Liaison with main on-site M&E contractors
  • Project management and site coordination
  • Authorised and competent electrical fitters and cable jointers
  • Senior Authorised Personnel and technical services
  • Liaison with Leeds City Council for opening notices for civil element
  • Provision of as-built records and O&M information
OVERVIEW

IUS were contracted to construct a new 1000kVA, 11000/433V UDE substation comprising a transformer with close coupled 11kV ring main unit and 1600amp ACB to provide a bulk LV supply to the site metered at LV.

DESCRIPTION

IUS undertook the design, procurement, installation, and commissioning of the Northern Powergrid (NPg) contestable works, which comprised the 11kV Ring Main Unit and the associated 2 No. 11kV, 300mm triplex cables. These cables were installed on private and public land to the NPg point of connection. This element also included the design and installation of the earth nest for the whole substation to NPg specifications.

IUS also undertook the design, procurement, installation, and commissioning of the IDNO (ESP) element of the project which comprised the transformer with close coupled ACB. IUS also advised the client with regard to the overall construction of the substation and the standards required by both the DNO and the IDNO in order for the adoption by both parties to be achieved.

The substation was tested, commissioned, and energised with the appropriate apparatus adopted by NPg and ESP.

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Unilever, Leeds Supply Upgrade 11kV Contestable Connection & Private Infrastructure Works

case-study

IUS completed the electrical construction works associated with Unilever’s supply upgrade at ...

Client

Unilever

Project

Unilever, Leeds Supply Upgrade

Location

Unilever, Coal Lane, Leeds

SERVICES PROVIDED
  • Outline and detailed design
  • 11kV Contestable connection work
  • On site private 11kV infrastructure work
  • Procurement of equipment
  • Installation of DNO and private 11kV switchgear
  • Installation of 11kV cables
  • Modifications of the existing 11kV ring
  • Heavy lifting operations
  • Testing and commissioning
  • Preparation of handback documentation
OVERVIEW

IUS completed the electrical construction works associated with Unilever’s supply upgrade at their site in Leeds. In order to provide a 4.3MVA supply, a new 11kV Distribution Network Operator (DNO) substation was required, as well as new private 11kV switchgear and transformers. IUS were appointed to undertake the design and installation of the 11kV contestable elements of the connection works along with the private 11kV and LV infrastructure.

DESCRIPTION

The project involved extending the DNO’s local 11kV network c. 220m to a point on Unilever’s site and supplying and installing a new 11kV intake substation complete with an 11kV metered ring main unit.

Modifications to the existing 11kV private network were required to facilitate the connection upgrade as well as the supply and installation of an 11kV switchboard, local 11kV ring main units, 11,000/433V transformers and a low voltage switchboard. Due to the nature of the site, IUS were required to work to a tight programme. The contract was delivered to the agreed timescales.

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Tosoh Quartz - County Durham

Tosoh Quartz

IUS delivered this work under our as an accredited Independent Connections Provider (ICP). 

Client

Tosoh Quartz

Project

Increased HV Supply Capacity to Factory

Location

Greencroft, County Durham

SERVICES PROVIDED
  • HV and LV design
  • ICP 20kV connection comprising:
  • GRP substation accommodation
  • 20kV metered ring main unit
  • 500kV transformer with close coupled
    LV board HV and LV cabling
  • Customer replacement LV switchboard
  • Construction to the adoptable
    standards of NPg
OVERVIEW

IUS delivered this work under our as an accredited Independent Connections Provider (ICP). Therefore, the works were carried out to the adoptable standards of the Distribution Network Operator, Northern Powergrid (NPg). The scope included the design, procurement, and installation of a 20kV distribution substation, low voltage sub-mains cabling, and a replacement customer low voltage switchboard to provide an increased supply capacity to the Tosoh Quartz factory in Greencroft, County Durham. The facility produces quartz glassware for the semiconductor industry for use in the processing of integrated circuits.

DESCRIPTION

IUS project managed the installation of the substation building to specification. The 115- meter feeder route encompassed 2 x 185mm aluminium 20kV XLPE Triplex cables to the point of connection onto the NPg network. Cable trenches were excavated on both private land and the public highway. IUS HV electrical fitters completed the installation of a 20kV
ABB safe plus ring main unit, 500kVA transformer with close coupled LV cabinet, earthing, protection, and metering cabling. IUS HV Jointers carried out the HV cable terminations. An IUS protection engineer conducted the pre-commissioning and witness testing for NPg. The IUS Senior Authorised Person provided the necessary safety documentation and oversight of the works. Customer LV sub mains cables were installed from the substation into the factory on high-level containment to supply a new low-voltage switchboard. Existing factory supplies were reconnected to the new switchboard during a planned outage giving the customer scope for their future expansion plans.

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Wren Kitchens

Wren Kitchens

The scope of works was to design, supply and install a 15MVA, 11kV network including substations and interconnecting cables to provide the power for a new Wren Kitchens ...

Client

Imtech Engineering Services Central

Project

New Wren Kitchens Manufacturing Factory 15MVA Connection and 11kV Infrastructure

Location

Barton-upon-Humber

SERVICES PROVIDED
  • Project management and site supervision
  • Health and safety documentation
  • Senior authorised person provision
  • Earthing study and design
  • Protection and grading study
  • Supply and installation of 11kV switchgear
  • Supply, installation, and commissioning of transformers with close coupled 11kV ring main units
  • Supply and Installation of all 11kV cable
  • Supply and installation of all 11kV earthing
  • Provision of operation and maintenance manual on completion of the project
OVERVIEW

The scope of works was to design, supply and install a 15MVA, 11kV network including substations and interconnecting cables to provide the power for a new Wren Kitchens Factory constructed adjacent to the existing Wren Kitchens site in Barton-upon-Humber.

DESCRIPTION

IUS completed the design of the 11kV system earth installation, including ground surveys and testing to ascertain the ground resistivity around site to be used in the earthing model. All earthing apparatus was installed to the design resulting in compliant earth nest readings.

A protection and grading study was undertaken of the 11kV network from the Northern Powergrid (NPg) metering breakers, through the customers intake 11kV switchboard and transformer, including the largest LV ACB’s, to ensure correct protection and grading for the new 11kV system.

Following design, a new client owned 11kV intake substation, comprising a 7 No. panel extensible switchboard, was supplied and installed at the perimeter of the site. Also installed were 2 No. 11kV 300mm Copper Triplex cable loops between the clients’ switchboard and the NPg switchgear in the adjacent rooms. This also included liaison with NPg on the final connections and operational requirements to ensure a seamless “power on”.

The scope of services also included the supply, installation and commissioning of 12 No. 1500kVA, 11000/433V transformers and 2 No. 1000kVA transformers, all with close coupled 11kV ring main units, installed within 4 No. substations around the site.

To create 2 x 11kV rings, IUS supplied and installed 4.5Km of 300mm Aluminium 11kV Triplex cable to provide connection between the clients’ new intake substation and the 4 No. aforementioned substations.

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EnergieKontor Operation & Maintenance Of Customer Owned HV & EHY Networks

EnergieKontor

IUS has c.1100 operation and maintenance agreements throughout the UK. There are three locations ...

Client

EnergieKontor

Project

Operation and maintenance of power systems at three UK windfarm sites

Location

Burton Pidsea, East Yorkshire Withernwick, East Yorkshire Lilbourne, Northamptonshire

SERVICES PROVIDED
  • Operation and maintenance of customer HV and EHV networks
  • Liaison with site operators
  • Liaison with local Distribution Network Operators
  • Site inspection
  • Planned maintenance
  • Reactive response to site
  • Fault identification and repair
OVERVIEW

IUS has c.1100 operation and maintenance agreements throughout the UK. There are three locations where IUS carry out this activity for EnergieKontor on their UK windfarms. This service includes inspection and switchgear maintenance. IUS also provides a call out service for emergency response.

DESCRIPTION

IUS is contracted to provide planned and reactive operation and maintenance services at three UK windfarms operated by EnergieKontour.

The contracted sites are:

  • Burton Pidsea Windfarm in East Yorkshire, which comprises of three turbines with a capacity of 10.2 MW.
  • Withernwick Windfarm in East Yorkshire, which comprises of nine turbines with a capacity 18.45 MW.
  • Lilbourne Windfarm in Northamptonshire, which comprises of five turbines with a capacity of 10 MW.

Site operations and activities are coordinated with the EnergieKontour control facility in Germany.

IUS services on these and similar contracts comprise of network operation, site inspection, planned maintenance and fault management and repair.

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Lochend Windfarm 33kV Substation

Lochend Windfarm

IUS completed the installation of two 33kV cable circuits, which form part of the Lochend windfarm connection ...

Client

Lochend Windfarm

Project

33kV Cable Ploughing

Location

Caithness, Scotland

SERVICES PROVIDED
  • Ploughing of two 33kV cable circuits
  • Installation of fiber optic cable for entire route
  • 33kV cable jointing and testing
  • Duct installations for road crossings
  • Procurement of equipment
  • Provision of specialised vehicles for site access
  • Provision of full GPS tagged as laid records
OVERVIEW

IUS completed the installation of two 33kV cable circuits, which form part of the Lochend windfarm connection works. This was a challenging route and IUS implemented cable ploughing technology.

DESCRIPTION

The contestable connection design required the installation of 18km of 33kV cabling across two feeders between the existing Distribution Network Operator (DNO) point of connection and the new windfarm. The route was across soft peat and through mature forestry. Due to environmental restrictions the works were completed in December and January, which presented additional challenges.

The use of cable ploughing techniques and low ground pressure bearing equipment significantly reduced the installation timescales and disruption to the ground conditions. A Hagglund ATV was deployed to ensure safe access and egress to the sites at all times.

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Lochend Windfarm 33kV Contestable Cable Circuit Installation

Lochend Windfarm

IUS completed the installation of two 33kV cable circuits, which form part of the ...

Client

Lochend Windfarm

Project

33kV Cable Ploughing

Location

Caithness, Scotland

SERVICES PROVIDED
  • Ploughing of two 33kV cable circuits
  • Installation of fiber optic cable for entire route
  • 33kV cable jointing and testing
  • Duct installations for road crossings
  • Procurement of equipment
  • Provision of specialised vehicles for site access
  • Provision of full GPS tagged as laid records
OVERVIEW

IUS completed the installation of two 33kV cable circuits, which form part of the Lochend windfarm connection works. This was a challenging route and IUS implemented cable ploughing technology.

DESCRIPTION

The contestable connection design required the installation of 18km of 33kV cabling across two feeders between the existing Distribution NetworkOperator (DNO) point of connection and the new windfarm. The route was across soft peat and through mature forestry. Due to environmental restrictions the works were completed in December and January, which presented additional challenges.

The use of cable ploughing techniques and low ground pressure bearing equipment significantly reduced the installation timescales and disruption to the ground conditions. A Hagglund ATV was deployed to ensure safeaccess and egress to the sites at all times.

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Melton Wind Farm 33kV Contestable Connection & Private Infrastructure Works

Melton Windfarm

IUS have completed the electrical construction works associated with the Melton Wind Farm ...

Client

Melton Wind Ltd / Seneca Global Energy

Project

Melton Wind Farm

Location

Gibson Lane, Melton, Hull, East Yorkshire

SERVICES PROVIDED
  • Outline and detailed design(Electrical and civil)
  • 33kV Contestable connection work
  • On site private 33kV infrastructure work
  • Procurement of equipment
  • Construction of primary substation building to DNO standards
  • HDD railway crossing
  • Possession planning
  • Installation of 33kV switchgear
  • Installation of containerised substations on raised platforms
OVERVIEW

IUS have completed the electrical construction works associated with the Melton Wind Farm development. The connection of the two 2.3MW Wind Turbines to the grid required a 33kV extension to the Northern Powergrid (NPg) electrical network. IUS were appointed to undertake the design and installation of the 33kV contestable elements of the connection works, along with the private 33kV and LV infrastructure.

DESCRIPTION

The project involved the construction of a combined building to house the 33kV NPg intake substation equipment and the customer owned 33kV switchgear.

The 33kV cable route to the new substation required the crossing of the Hull–London Railway Line by Horizontal Directional Drilling (HDD) methods. The IUS scope of works included all negotiations with Network Rail, HDD design and settlement calculations, possession planning and drilling operations.

The private electrical infrastructure installed by IUS included; 33kV, pilot and LV single core cables; a three panel 33kV switchboard; protection equipment; substation ancillary apparatus and two 2.5MVA containerised substations on raised platforms (flood risk mitigation).

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Scottish Water - Ardersier WwTW - HV-LV Supply

Scottish Water - Ardersier

IUS was appointed by Scottish Water (SW) to provide a new HV supply to support the planned extension to the existing wastewater treatment works at Ardersier ...

Client

Scottish Water

Project

New wastewater treatment works (WwTW) - HV/LV supply

Location

Ardersier, Ross-shire

SERVICES PROVIDED
  • Design
  • Principal contractor duties
  • All civil works
  • Cable pulling and jointing
  • Traffic management
  • Engagement with the DNO and other parties
OVERVIEW

IUS was appointed by Scottish Water (SW) to provide a new HV supply to support the planned extension to the existing wastewater treatment works at Ardersier. Located on the outskirts of a conservation area, all works, including site traffic had to be carefully programmed and managed to minimize the impact to the area.

DESCRIPTION

Following significant reinforcement of the local 11kV network by SSEN, a suitable point of connection was identified for IUS to utilise.

IUS designed, supplied and installed the 3 core 150mm 11kV polymeric (LLDPE) cable circuit, from the overhead line point of connection, terminating at the HV switchgear controlling the 11,000/433V, 500kVA ground mounted transformer. The substation apparatus was located within a new purpose-built GRP housing. A LV supply was provided from the switchgear to the SW kiosk within the site. All apparatus was tested by IUS prior to energisation.

IUS fulfilled the role as Principal Contractor for the works and undertook all cable joints and terminations. Active engagement was maintained with all third parties, including SSEN to ensure that the works were completed to their requirements and to client timescales.

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Drumboyhill Bpt & Shieldhill Farm Cathodic Protection

Drumboyhill

Scottish Water engaged IUS to install a new 3 phase supply to their Pumping plant at Drumboyhill and Single Phase Supply to their new Cathodic protection at Shieldhill Farm ...

Client

Scottish Water

Project

Drumboyhill BPT

Location

Highfield Farm Road, Fenwick, Ayrshire

SERVICES PROVIDED
  • 3.5KM 11kV cabling
  • 50KVA Pole mounted transformer
  • Single phase Supply to Shieldhill Farm cathodic Protection
  • Three phase supply to new BPT control
  • 11kV Cable jointing
  • LV Cable jointing
  • Directional drilling
  • Traffic management
  • Customer interface
  • Principle designer
  • On site welfare and full time management
  • HSQE management on site
  • Procurement of equipment
  • Testing and commissioning
  • Close working with DNO to ensure connection was completed on time
  • Completed job handover
OVERVIEW

Scottish Water engaged IUS to install a new 3 phase supply to their Pumping plant at Drumboyhill and Single Phase Supply to their new Cathodic protection at Shieldhill Farm.

DESCRIPTION

The project involved installing a new 11kV supply c.3.5 km away from the Point of Connection (POC) issued by Scottish Power due to the remote location. In order for IUS to meet Scottish Water deadlines we installed the cable within adoptable carriageway. The cable route included crossing a motorway bridge over the M77, grass verge adjacent to the A77 and a single track carriageway along Highfield Farm Road. IUS also had to carry out directional drilling under four water crossings due to insufficient depth on the bridges. The area where the new Drumboyhill tank is located was within a area of heavy peat, so specialist equipment was required to excavate as well as access the wood pole for the transformer work.

IUS were engaged as Principle Designer on this project and had a full time Coordinator along with a Project Manager and HSQE Advisor, working in collaboration. Two additional Contractors were working in the area, therefore close engagement and coordinated programming of works were of high importance.

All works on site were completed on time, within budget and were handed over to the Distribution Network Operator for adoption on energisation.

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Gorbals Pumping Station 11kV Contestable Connections & Private Infrastructure Works

Gorbals Pumping Station

IUS completed the electrical construction works associated with the prestigious Gorbals Pumping Station project. The power for the three 1.2MW pumps ...

Client

Scottish Water / Amey Black and Veatch

Project

Gorbals Pumping Station

Location

Corselet Road, Darnley, Glasgow, Scotland

SERVICES PROVIDED
  • Outline and detailed design (Electrical and Civil)
  • System studies (P28/P29/G5-4)
  • 11kV contestable connection work
  • On site private 11kV infrastructure work
  • Procurement of equipment
  • Installation of 11kV switchgear
  • Installation of step down transformers
  • Installation of 11kV cables
  • Installation of control/metering cables
  • Heavy lifting operations
  • Protection design
  • Testing and commissioning
  • Preparation of handback documentation
OVERVIEW

IUS completed the electrical construction works associated with the prestigious Gorbals Pumping Station project. The power for the three 1.2MW pumps required a 3.6MVA connection to the existing Scottish Power Energy Networks 11kV network. IUS were appointed to undertake the design and installation of the adoptable 11kV contestable elements of the connection works along with the clients own 11kV infrastructure within the Pumping Station itself.

DESCRIPTION

The project involved the provision of a bespoke GRP enclosure to house the Distribution Network Operator (DNO) 5 panel 11kV switchboard, with the clients 11kV switchgear located within the fabric of the main Pump House, constructed by others. Two independent 3.6MVA circuits were provided from individual primary substations on the DNO 11kV network.One feeder for normal service conditions and one circuit for security of supply in the event of a fault on the principal supply.

Both 11kV cable routes to the Pumping Station involved extensive excavation over circa 7km, including under three railway bridges and over numerous road bridges. This required additional engineering solutions to negotiate. The IUS scope of works included interface with all stakeholders, most notably Network Rail, local councils, the DNO, SEPA, as well asScottish Water. The private electrical infrastructure installed by IUS included an eight panel 11kV switchboard, three 2MVA transformers, one 0.8MVA transformer, 11kV cabling, control/metering wiring, electrical protection and substation ancillary equipment.

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Loch Ness Regional – Raw Water Pumping Station (RWPS) - New Extra High Voltage (EHV) / Low Voltage (LV) Supply

Lochness Pumping Station

The development of a new RWPS on the west bank of Loch Ness formed part of Scottish Waters Regional Improvement Scheme ...

Client

Scottish Water

Project

Loch Ness Regional - Intake RWPS – Provision of new HV / LV supply

Location

Invermoriston, Loch Ness

SERVICES PROVIDED
  • Full design role
  • Principal contractor duties
  • Engagement with the SSEN, Forestry Scotland, client’s other contractors and all other key stakeholders
  • All civil works
  • Overhead line construction
  • SAP duties
  • Turnkey solution
  • Management consultancy of directional drilling
OVERVIEW

The development of a new RWPS on the west bank of Loch Ness formed part of Scottish Waters Regional Improvement Scheme. The scheme would provide an upgrade to improve the water quality and system resilience to the area. As part of the Scottish Water’s Supply Chain, IUS delivers contestable connections as an Independent Connections Provider. Therefore, IUS was appointed to design, procure and deliver the new electrical supply to operate this new pumping station.

DESCRIPTION

The works necessitated the installation of new H-Poles adjacent to the existing Scottish Power Energy Networks (SSEN) overhead line. These Hpoles would accommodate the installation of a 33,000/433V, 200kVA pole mounted transformer (PMT) and associated components. From the LV side of the PMT, a LV cable was laid to the new RWPS kiosk, terminating in a cutout beneath the installed current transformer metering panel. 

The feeder route necessitated a road crossing. To minimize disruption to traffic flow on the A82, the road crossing was undertaken by directional drilling.

Extensive engagement with SSEN was maintained throughout the duration of the works to ensure full compliance with their adoptable standards. On completion the substation was energised and the RWPS is now in full operation.

IUS undertook full design duties and operated as Principal Contractor (PC) for all our site works, liaising closely with Scottish Water’s own PC for the main development.

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Loch Ness Regional - Water Treatment Works (WTW) - New Extra High Voltage (EHV) / Low Voltage (LV) Supply

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In total IUS completed five individual service connections on the west bank of Loch Ness that formed part of Scottish Water’s Regional Improvement Scheme ...

Client

Scottish Water

Project

Loch Ness Regional - Water treatment works – Provision of new HV / LV supply

Location

Invermoriston, Loch Ness

SERVICES PROVIDED
  • Full design role
  • Principal contractor duties
  • Engagement with the DNO, Forestry Scotland, client’s other contractors and all other key stakeholders
  • All civil works
  • Overhead line construction
  • SAP duties
  • Turnkey solution
OVERVIEW

In total IUS completed five individual service connections on the west bank of Loch Ness that formed part of Scottish Water’s Regional Improvement Scheme. The scheme would provide an upgrade to resolve the water quality and resilience issues in the area.

DESCRIPTION

Following extensive engagement with Scottish and Southern Energy Networks (SSEN) the Distribution Network Operator, IUS was able to develop several service options to facilitate the connection to the WTW.
Within these options key considerations with other stakeholders were required, including with Forestry Commission Scotland, due to the sensitivities of the area.

IUS supplied and installed new 33kV overhead line construction. Approximately 950m of 95mm single core (triplex) aluminium 33kV cable was laid below the Forestry Commission Scotland access track, terminating at a ground mounted substation, which included a 33,000/433V, 500kVA transformer. A 300mm 4 core aluminium Wavecon cable was installed from the substation transformer, terminating at a 600Amp fused cut-out beneath the LV current transformer metering panel. The full HV and LV network was designed, procured, installed, tested and commissioned by IUS. On completion of the works to the adoptable standards of SSEN, the substation was energised. The WTW is now in full operation.

The works were undertaken during weekends only, to avoid disruption to the main site works.

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Scottish Water - South Lanarkshire WwTW - New LV Supply

Scottish Water

IUS was appointed by Scottish Water to procure a LV supply to support their CSO screening facility at Coalburn Road, South Lanarkshire ...

Client

Scottish Water

Project

New wastewater treatment works (WwTW) - LV supply

Location

Coalburn Road, South Lanarkshire

SERVICES PROVIDED
  • Design
  • Principal contractor duties
  • All civil works
  • Cable pulling and jointing
  • Traffic management
  • Engagement with the DNO and other parties
OVERVIEW

IUS was appointed by Scottish Water to procure a LV supply to support their CSO screening facility at Coalburn Road, South Lanarkshire.

The route for the new LV service ran along heavily trafficked routes, therefore both vehicular management was carefully considered as well as pedestrians. This would minimise the impact to the residents and users of the Coalburn Leisure Centre.

DESCRIPTION

Over 500m of excavation, duct laying, cable installation and full reinstatement was undertaken by IUS from the SPEN point of connection to site. Point of connection identification, jointing and cable testing were also completed in accordance with SPEN specifications.

IUS fulfilled the role as Principal Contractor for the connection, implementation and management of all works associated with the project, including a rolling traffic management scheme to align with the progress of the works.

IUS effected all communication and liaison with the residents and key stakeholders, ensuring full awareness of the works, their progress and successful completion.

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