C334 (2023) Supply of Reclaimed & New Electrical Insulating Oil and Associated Services

The supply and delivery of reclaimed and unused mineral insulating oil and removal from site of PCB-contaminated oil

The supply and delivery, to sites within the Northern Ireland Electricity Networks area of supply, of Synthetic Hydrocarbon Insulating Oil for use in Oil-Filled Pressure-Assisted Cables operating up to 275kV.

NIE Networks requires synthetic ester insulating fluid to facilitate retro-filling of existing free breathing transformers on the 11 & 6.6 kV network. The transformers range in size from 200 kVA to 1000 kVA with a fluid requirement by weight of 400 to 800kgs. The transformers will be drained of the existing mineral insulating oil and refilled on site with synthetic ester insulating fluid, as required. NIE Networks will request delivery to NIE Networks Stores (Ballymena, Craigavon and Silverwood Workshop) of various quantities of Synthetic Ester Fluid in drums (205 L) or bulk delivery to site depending on the extent of works being carried out onsite

On site filtering of new or existing oil within a transformer. The supplier shall test the oil before and after site processing to ensure that the gas and moisture in the oil has been reduced to a suitable level. Onsite regeneration of existing oil with elevated levels of acidity. The supplier shall test the oil before and after site regeneration to ensure that the gas, moisture and acidity in the oil has been reduced to a suitable level

Supply of oil tankers for the purposes of site storage during removal of oil from transformers for the purposes of inspection or repair or associated with Lot 2 above. This will require the supplier to transport the necessary equipment to site including all transport costs (inc.accommodation, subsistence and ferry’s).

Provision of experienced/trained personnel to facilitate on site operation of the NIE Networks Filterall oil processing plant inclusive of all travel costs (inclusive of accommodation, subsistence and ferry’s).

The testing and analysis of oil samples taken from transformers and cables on NIE Networks Transmission and Distribution Network. It will involve the collection and delivery of samples, carrying out the various tests as specified and analysing this data and reporting the results back to NIE Networks. Provision of required sample bottles, carrying cases and as requested, buchholz gas sample vessels. The testing and analysis of Synthetic Ester Fluid from transformers and silicon fluids from cable terminations as required.

• Lot 1 - Management and Recovery of Insulating Oil includes supply of switch gear and transformer oil
• Reference: c334 (2023) supply of reclaimed & new electrical insulating oil and associated services
• Value: £2,411,000

• Lot 2 - Supply of Cable Oil to BS60867
• Reference: c334 (2023) supply of reclaimed & new electrical insulating oil and associated services
• CONTRACT NOT AWARDED – NO SUCCESSFUL BIDDERS.

• Lot 3 – Supply of Transformer Synthetic Ester Fluid
• Reference: c334 (2023) supply of reclaimed & new electrical insulating oil and associated services
• CONTRACT NOT AWARDED – NO SUCCESSFUL BIDDERS.

• Lot 4 – Oil Processing Services (BS148) and Site Processing
• Reference: c334 (2023) supply of reclaimed & new electrical insulating oil and associated services
• Value: £971,000

• Lot 5 - Supply of Tankers and Recovery of Drums
• Reference: c334 (2023) supply of reclaimed & new electrical insulating oil and associated services
• Value: £341,000

• Lot 6 – Site Operation Services
• Reference: c334 (2023) supply of reclaimed & new electrical insulating oil and associated services
• CONTRACT NOT AWARDED – NO SUCCESSFUL BIDDERS.

• Lot 7 – Provision of Transformer & Cable Oil Analysis
• Reference: c334 (2023) supply of reclaimed & new electrical insulating oil and associated services
• Value: £424,000