--- title: "SPS-11028 Replacement of Existing Pressurisation System at HMP & YOI Polmont" ocid: "ocds-r6ebe6-0000840475" canonical_url: "https://d3tenders.com/contract/?ocid=ocds-r6ebe6-0000840475" markdown_url: "https://d3tenders.com/contract/ocds-r6ebe6-0000840475.md" json_url: "https://d3tenders.com/contract/ocds-r6ebe6-0000840475.json" source: "Public Contracts Scotland" current_stage: "Planning" buyer: "Scottish Prison Service" published: "2026-08-18" --- # SPS-11028 Replacement of Existing Pressurisation System at HMP & YOI Polmont Buyer: Scottish Prison Service Current stage: Planning OCID: ocds-r6ebe6-0000840475 [View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-r6ebe6-0000840475) [Download OCDS JSON](https://d3tenders.com/contract/ocds-r6ebe6-0000840475.json) ## Summary The Scottish Prison Service intends to procure works to replace the existing pressurisation unit and expansion vessel system at HMP & YOI Polmont. The requirement covers the design, supply, installation, testing and commissioning of the replacement system. It will serve the prison’s medium-temperature hot-water heating systems and support the associated domestic hot-water services. The pressurisation and expansion arrangement is essential to maintaining pressure and operational stability across these systems. The work is therefore suited to building-services, mechanical-engineering and commercial heating contractors able to deliver a complete replacement within a live custodial estate. Delivery will take place at HMP & YOI Polmont in Polmont, Scotland. The procurement is classified under CPV 45232141, covering heating works. This procurement is at the planning stage: the Scottish Prison Service has stated an intention to award a contract, but this stage does not invite tenders. A formal contract notice is expected on 21 August 2026, followed by a Request for Quotation made available through the buyer’s tendering system. The procurement is planned as one lot for the complete replacement works. Responses will be evaluated against the requirements set out in the future quotation request. The planned procurement is covered by the Government Procurement Agreement. Businesses should treat 21 August 2026 as the buyer’s expected date for the next notice, rather than as a bid deadline. The planned contract value and delivery period are not stated here. This will suit contractors with proven capability in the design and replacement of pressurisation units and expansion vessels serving medium-temperature heating and domestic-hot-water systems. Relevant suppliers are likely to include mechanical-services firms, heating-system specialists and building-services contractors that can manage equipment supply, installation, testing and commissioning as one package. Experience of maintaining system pressure, expansion control and operational resilience will be directly relevant. The work will also favour businesses able to plan and carry out engineering works in a prison environment, coordinate safely with the Scottish Prison Service and demonstrate reliable commissioning and handover. Firms should prepare evidence of comparable heating or plant-room replacement projects, competent technical personnel and the capacity to deliver all stages of the requirement. ## Notice The Scottish Prison Service (SPS) requires a contractor for the design, supply, installation, testing and commissioning of a replacement pressurisation unit and expansion vessel system serving the MTHW heating systems at HMP & YOI Polmont. The heating and domestic hot water systems at HMP & YOI Polmont are supported by a central pressurisation unit and expansion vessel arrangement, which is essential for maintaining system pressure and overall operational stability. ### Lot Information Lot 1 The SPS will commence this procurement process in good faith and with the intention of awarding a contract. Following publication of the Contract Notice, a Request For Quotation (RFQ) will be published by SPS and will be made available to bidders on Public Contract Scotland-Tender (PCS-T). Tender responses will then be evaluated by the SPS in accordance with the RFQ. ## Key Details | Field | Value | | --- | --- | | Publication source | Public Contracts Scotland | | Latest notice | https://www.publiccontractsscotland.gov.uk/search/show/search_view.aspx?ID=AUG562562 | | Notice type | PCS Notice - Website Prior Information Notice | | Procurement type | Standard | | Procurement category | Works | | Procurement method | Not Specified | | Procurement method details | Not specified | | Tender suitability | Not specified | | Awardee scale | Not specified | | All stages | Planning | ## Dates | Field | Value | | --- | --- | | Publication date | 18 Aug 2026 | | Submission deadline | Not specified | | Future notice date | 21 Aug 2026 | | Award date | Not specified | | Contract period | Not specified | | Recurrence | Not specified | ## Values | Field | Value | | --- | --- | | Tender value | Not specified | | Lots value | Not specified | | Awards value | Not specified | | Contracts value | Not specified | ## Status | Field | Value | | --- | --- | | Tender status | Planned | | Lots status | Planned | | Awards status | Not specified | | Contracts status | Not specified | ## Buyer | Field | Value | | --- | --- | | Main buyer | Scottish Prison Service | | Locality | EDINBURGH | | Postcode area | Edinburgh | | Postcode | EH12 9DJ | | Country | Scotland | | ITL 1 | TLM Scotland | | ITL 2 | TLM1 East Central Scotland | | ITL 3 | TLM13 City of Edinburgh | | Local authority | City of Edinburgh | | Electoral ward | Drum Brae/Gyle | | Westminster constituency | Edinburgh West | | Delivery location | TLM Scotland | ## CPV Codes ### Divisions - 45 - Construction work ### Codes - 45232141 - Heating works ## Release History - 18 Aug 2026 at 01:00 - Planning - PCS Notice - Website Prior Information Notice - https://www.publiccontractsscotland.gov.uk/search/show/search_view.aspx?ID=AUG562562 ## Documents - https://www.publiccontractsscotland.gov.uk/search/show/search_view.aspx?ID=AUG562562 SPS-11028 Replacement of Existing Pressurisation System at HMP & YOI Polmont - The Scottish Prison Service (SPS) requires a contractor for the design, supply, installation, testing and commissioning of a replacement pressurisation unit and expansion vessel system serving the MTHW heating systems at HMP & YOI Polmont. The heating and domestic hot water systems at HMP & YOI Polmont are supported by a central pressurisation unit and expansion vessel arrangement, which is essential for maintaining system pressure and overall operational stability. ## Notice URLs - http:// - http://www.sps.gov.uk - https://api.publiccontractsscotland.gov.uk/v1/Notice?id=ocds-r6ebe6-0000840475 - https://www.publiccontractsscotland.gov.uk/Search/Search_Switch.aspx?ID=840475 ## 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-r6ebe6-0000840475. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-r6ebe6-0000840475.json.