--- title: "Building, Delivery and Installation of an Open Raft Facility" ocid: "ocds-h6vhtk-051d47" canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-051d47" markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-051d47.md" json_url: "https://d3tenders.com/contract/ocds-h6vhtk-051d47.json" source: "Find A Tender Service" current_stage: "Planning" buyer: "NPL MANAGEMENT LIMITED" published: "2025-05-22" --- # Building, Delivery and Installation of an Open Raft Facility Buyer: NPL MANAGEMENT LIMITED Current stage: Planning OCID: ocds-h6vhtk-051d47 [View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-h6vhtk-051d47) [Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-051d47.json) ## Summary The procurement process led by NPL Management Limited focuses on planning the building, delivery and installation of an Open Raft Facility. This major works project falls under the construction and architectural industry categories and is situated at the Wraysbury Reservoir in Middlesex, UK. The procurement is at the planning stage, with a pipeline notice issued on 22nd May 2025 and an anticipated future notice date of 30th June 2025. The procurement method is open, facilitating wide participation, and the contract period is projected from 28th November 2025 to 30th November 2026. This project's estimated budget is £3,750,000, offering significant scope for businesses capable of delivering high-quality construction and engineering services. This tender is an excellent opportunity for growth-oriented businesses in the construction, engineering, and architectural sectors. The project requires expertise in modular construction, marine structures, and logistical management given its complexity and specific requirements. The procurement process encourages participation from SMEs, and companies with capabilities in environmental compliance, modular building, marine engineering, and on-site assembly may find this prospect particularly advantageous. Engaging with this project allows businesses to showcase their skills in a high-profile, technically demanding environment, which can lead to further opportunities in similar government-led infrastructure projects. ## Notice The open raft facility is a floating structure for testing of underwater ultrasonic devices located on the Wraysbury Reservoir in Middlesex, UK. It comprises a buoyant structure assembled from modular pontoons with a steel grillage deck structure sheathed with non-slip GRP panels. There are two large moonpools with gantry cranes over each, plus four hydraulic knuckle boom cranes for handling test equipment and loading/off-loading from supply boats. Accommodation comprises modular buildings fitted out as laboratory, office, accommodation, workshop and store spaces. The whole structure is to be modular, delivered to site by road and assembled in the water. Mooring is to four concrete sinkers with mooring wires and shock absorbing chains to the pontoon.Included in the contract is the safe and ecologically compliant disposal of the existing facility. The objective of the project is to replace the existing facility with a new and substantially improved pontoon for the testing and calibration of underwater acoustic transducers and associated apparatus. Overall dimensions of the pontoon are approximately 32.50 metres long and 31 metres beam comprising five hulls each consisting of six (6) modular pontoons supporting a deck of steel grillage construction topped with non-slip glass fibre panels. Safety railings, arranged in portable sections are to be fitted around the perimeter of the pontoon and around both moon pools. Within the pontoon will be two (2) moon pools one about 20.00 metres long, the other around 15 metres, both are 4.20 metres wide over which will be gantry cranes incorporating the test equipment lifting stations. For loading/offloading equipment, stores and ancillary items there will be four (4) hydraulic knuckle boom cranes. Accommodation comprises four (4) structures constructed from modular buildings; the main two storey accommodation building, located on the centreline between the moon pools, towards the forward end of the pontoon, incorporating; on the ground floor, the laboratories, workshop, store and plant room. On the first floor, accessed by an internal staircase, will be a canteen with kitchenette and an open plan office. Aft of the main building towards the stern is a single storey building, described as the client store/office space; it is divided into two sections, one for the storage of test equipment and the other office spaces for clients. To starboard forward is a small single storey building for additional office space; aft to port is another small building for use as a garage/store. Suitable rubber 'D' section fendering is to be fitted around the periphery of the pontoon to prevent damage of both the pontoon and the vessels servicing it. Services are arranged from shore to the pontoon and include 400/3/50 AC power supply, telephone and internet. Mooring of the pontoon will be by four (4) concrete sinkers suitably positioned on the reservoir bottom and connected to the pontoon by adjustable length steel galvanised wire mooring warps with heavy short link chain cable shock absorbers. Budgeted amount: PS3,750,000.00 ## Key Details | Field | Value | | --- | --- | | Publication source | Find A Tender Service | | Latest notice | https://www.find-tender.service.gov.uk/Notice/024694-2025 | | Notice type | UK1 - Pipeline Notice | | Procurement type | Standard | | Procurement category | Works | | Procurement method | Open | | Procurement method details | Open procedure | | Tender suitability | SME | | Awardee scale | Not specified | | All stages | Planning | ## Dates | Field | Value | | --- | --- | | Publication date | 22 May 2025 | | Submission deadline | Not specified | | Future notice date | 30 Jun 2025 | | Award date | Not specified | | Contract period | 28 Nov 2025 - 30 Nov 2026 | | Recurrence | Not specified | ## Values | Field | Value | | --- | --- | | Tender value | £3,750,000 | | 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 | NPL MANAGEMENT LIMITED | | Locality | TEDDINGTON | | Post town | Twickenham | | Postcode | TW11 0LW | | Country | England | | ITL 1 | TLI London | | ITL 2 | TLI7 Outer London - West and North West | | ITL 3 | TLI75 Hounslow and Richmond upon Thames | | Local authority | Richmond upon Thames | | Electoral ward | Teddington | | Westminster constituency | Twickenham | | Delivery location | TLC North East (England), TLD North West (England), TLE Yorkshire and The Humber, TLF East Midlands (England), TLG West Midlands (England), TLH East (England), TLI London, TLJ South East (England), TLK South West (England) | ## CPV Codes ### Divisions - 44 - Construction structures and materials; auxiliary products to construction (except electric apparatus) - 45 - Construction work - 71 - Architectural, construction, engineering and inspection services ### Codes - 44000000 - Construction structures and materials; auxiliary products to construction (except electric apparatus) - 45000000 - Construction work - 71000000 - Architectural, construction, engineering and inspection services ## Release History - 22 May 2025 at 11:13 - Planning - UK1 - Pipeline Notice - https://www.find-tender.service.gov.uk/Notice/024694-2025 ## Documents - https://www.find-tender.service.gov.uk/Notice/024694-2025 22nd May 2025 - Pipeline notice on Find a Tender ## Notice URLs - http://www.npl.co.uk - https://www.legislation.gov.uk/ukpga/2023/54/contents ## 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-h6vhtk-051d47. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-051d47.json.