--- title: "Supply of Mechanical & Electrical (M&E) Equipment for the Water Management Zones (WMZ) at Sizewell C site" ocid: "ocds-b5fd17-1c5671d8-2cbd-4bd5-9144-78d9a3c03755" canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-1c5671d8-2cbd-4bd5-9144-78d9a3c03755" markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-1c5671d8-2cbd-4bd5-9144-78d9a3c03755.md" json_url: "https://d3tenders.com/contract/ocds-b5fd17-1c5671d8-2cbd-4bd5-9144-78d9a3c03755.json" source: "Contracts Finder" current_stage: "Tender" buyer: "SIZEWELL C LIMITED" published: "2025-05-15" --- # Supply of Mechanical & Electrical (M&E) Equipment for the Water Management Zones (WMZ) at Sizewell C site Buyer: SIZEWELL C LIMITED Current stage: Tender OCID: ocds-b5fd17-1c5671d8-2cbd-4bd5-9144-78d9a3c03755 [View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-b5fd17-1c5671d8-2cbd-4bd5-9144-78d9a3c03755) [Download OCDS JSON](https://d3tenders.com/contract/ocds-b5fd17-1c5671d8-2cbd-4bd5-9144-78d9a3c03755.json) ## Summary The procurement process, initiated by Sizewell C Limited, is focused on the supply of Mechanical & Electrical (M&E) Equipment for the Water Management Zones at the Sizewell C site. This tender falls under the industry category of water-treatment chemicals and water filtration apparatus, according to CPV codes 24962000 and 42912310, respectively. The opportunity is currently in the tender stage, with a publication date of 15th May 2025. Interested parties must submit their expressions of interest by 28th May 2025. The contracts are expected to commence on 30th October 2025 and conclude on 29th April 2026. The procurement location spans the East of England and other territories and regions, offering a broad delivery scope. This tender represents a significant opportunity for SMEs, targeting businesses in the engineering and environmental management sectors. The project involves supplying desilting units, pumps, and ancillary equipment necessary for water management at construction sites, making it ideal for firms specialising in mechanical and electrical engineering solutions for environmental applications. With a budget ranging from £500,000 to £1,000,000, the tender promises substantial potential for business growth, allowing companies to expand their expertise in the creation of sustainable water management infrastructure. This procurement process could particularly benefit businesses focused on water treatment technologies and those looking to engage in large-scale infrastructure projects across multiple regions. ## Notice This expression of interest (EOI) serves to inform the supply chain about the upcoming procurement for the supply of Mechanical & Electrical (M&E) Equipment for the Water Management Zones (WMZ) at Sizewell C site. This equipment supply will be desilting type units to control the suspended solid discharge from the outfalls. These units shall be supplied with the pumps and ancillary equipment necessary to lift the water from the discharge network to the treatment plant and for integrating the pump with the control system. These treatment plants will be primarily used to treat surface runoff water collected via the site drainage network, but also includes emergency potable water discharges and some groundwater dewatering that cannot be practically treated at the main groundwater treatment plant. This table shows the space requirements, power requirements and source and flow rates for each WMZ treatment plant: WMZ / Treatment plant footprint / Treatment flow rate (l/s (m3/hr)) / Power requirement (kW) / Power source WMZ 1 12x6m 23.7 (85.3) 15-20 Generator WMZ 2 12x6m 27.6 (99.4) 15-20 Network WMZ 3 16x6m 40.7 (147) 35-40 Network WMZ 5 12x6m 31.2 (112) 20-25 Generator WMZ 7 25x7.5m 62.0 (223) 35-40 Generator TMO 25x25m 200 (720) TBC Generator The treatment plant is only required to manage total suspended solids (TSS); hydrocarbons are assumed to be trapped in the WMZ and will be removed using booms deployed by client. The concentrations for TSS are as follows: * Outfall to the SSSI 60mg/l * Outfall to the sea 250mg/l pH correction is not included at each WMZ but provision of it might be required on some plants. ## Key Details | Field | Value | | --- | --- | | Publication source | Contracts Finder | | Latest notice | https://www.contractsfinder.service.gov.uk/Notice/a4dbd6b9-ac2d-4330-a54b-463a9de5ae0f | | Notice type | Tender Notice | | Procurement type | Standard | | Procurement category | Goods | | Procurement method | Not Specified | | Procurement method details | Not specified | | Tender suitability | SME | | Awardee scale | Not specified | | All stages | Tender | ## Dates | Field | Value | | --- | --- | | Publication date | 15 May 2025 | | Submission deadline | 28 May 2025 | | Future notice date | Not specified | | Award date | Not specified | | Contract period | 30 Oct 2025 - 29 Apr 2026 | | Recurrence | Not specified | ## Values | Field | Value | | --- | --- | | Tender value | £1,000,000 | | Lots value | Not specified | | Awards value | Not specified | | Contracts value | Not specified | ## Status | Field | Value | | --- | --- | | Tender status | Active | | Lots status | Not specified | | Awards status | Not specified | | Contracts status | Not specified | ## Buyer | Field | Value | | --- | --- | | Main buyer | SIZEWELL C LIMITED | | Locality | LONDON | | Post town | West London | | Postcode | W1T 4EZ | | Country | England | | ITL 1 | TLI London | | ITL 2 | TLI3 Inner London - West | | ITL 3 | TLI36 Camden | | Local authority | Camden | | Electoral ward | Bloomsbury | | Westminster constituency | Holborn and St Pancras | | Delivery location | Not specified | ## CPV Codes ### Divisions - 24 - Chemical products - 42 - Industrial machinery ### Codes - 24962000 - Water-treatment chemicals - 42912310 - Water filtration apparatus ## Release History - 15 May 2025 at 08:40 - Tender - Tender Notice - https://www.contractsfinder.service.gov.uk/Notice/a4dbd6b9-ac2d-4330-a54b-463a9de5ae0f ## Documents - https://www.contractsfinder.service.gov.uk/Notice/a4dbd6b9-ac2d-4330-a54b-463a9de5ae0f 15th May 2025 - Opportunity notice on Contracts Finder - https://www.competefor.com/business/viewOpportunityDetailsSupplier.html?id=94105642 Please follow this link to view the notice. ## Provenance This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-b5fd17-1c5671d8-2cbd-4bd5-9144-78d9a3c03755. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-b5fd17-1c5671d8-2cbd-4bd5-9144-78d9a3c03755.json.