--- title: "Attenuation Tanks" ocid: "ocds-b5fd17-346ade80-f507-4fd5-9ff4-fcf3d64c0b74" canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-346ade80-f507-4fd5-9ff4-fcf3d64c0b74" markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-346ade80-f507-4fd5-9ff4-fcf3d64c0b74.md" json_url: "https://d3tenders.com/contract/ocds-b5fd17-346ade80-f507-4fd5-9ff4-fcf3d64c0b74.json" source: "Contracts Finder" current_stage: "Tender" buyer: "SKANSKA CONSTRUCTION UK LIMITED" published: "2023-08-03" --- # Attenuation Tanks Buyer: SKANSKA CONSTRUCTION UK LIMITED Current stage: Tender OCID: ocds-b5fd17-346ade80-f507-4fd5-9ff4-fcf3d64c0b74 [View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-b5fd17-346ade80-f507-4fd5-9ff4-fcf3d64c0b74) [Download OCDS JSON](https://d3tenders.com/contract/ocds-b5fd17-346ade80-f507-4fd5-9ff4-fcf3d64c0b74.json) ## Summary The buying organisation, Skanska Construction UK Limited, is tendering for the supply of Attenuation Tanks for the A428 Black Cat to Caxton Gibbet Improvement Scheme on behalf of National Highways. The procurement falls under the industry category of Instrumentation and control equipment in the East of England region. The tender, with ID SC59, is currently in the planning stage, and the tender period ends on 4th September 2023. The contract period is scheduled to start on 9th April 2024 and end on 9th April 2025. This tender presents an opportunity for businesses specialising in works related to instrumentation and control equipment to compete. Skanska is seeking suppliers who can provide BBA certified Attenuation Tanks that meet industry standards for the Highways sector. Small and medium-sized enterprises (SMEs) are encouraged to participate, and the tender process is not limited to specific types of businesses. Interested parties can access more details and submit their expression of interest on the Skanska Construction UK Limited website. ## Notice Skanska is preparing to deliver the A428 Black Cat to Caxton Gibbet Improvement Scheme on behalf of National Highway. This package is for supplying Attenuation Tanks as follows; Attenuation systems shall be supplied, installed and backfilled by the supplier as per the details provided in the construction drawings. Supplier shall provide warranties as per industry standards. These shall be BBA certified and conform to the CIRIA guidelines. These shall be leak proof and vented to dissipate air pressure. The system shall be able to take the highway loadings demonstrated by the calculations. The system shall be supplied with the manifolds and required accessories to connect to the upstream and downstream drainage chambers. Any geotextile wraps or surround shall be part of the installation. The storage tank shall be impermeably lined with an impermeable membrane and constructed as per the manufacturer's instructions. Flow control shall be installed in the downstream chamber of the storage tank to attenuate the flow to the agreed rates. Flow shall be controlled by means of an orifice plate or similar as specified in drawings and drainage schedules. The supplier/Installer will have to install the upstream and downstream chamber and connect the system into these chambers. If there are bespoke modules to be used as inspection chambers these shall be incorporated into the system. Before installation of the system approvals from the client is mandatory for the products, accessories and geotextiles. A data sheet showing allowable loadings and flow rates, storage capacity and other relevant parameters shall be supplied as part of material approval process. If required precast concrete rings to form upstream and down stream chambers can be supplied to site but the connection of the system shall be down to the supplier. Before backfilling the units shall be jointly inspected and any testing required shall be carried out. Water or for testing if required shall be supplied by the installer. Material for backfill will be supplied on site and rate of supply per day to be agreed. Site shall be cleared of all debris and remaining materials by the installer. You will then be invited to complete our Request for Information (RFI), conducted on our Oracle Cloud platform. The RFI identifies if your business meets the required high standards expected in the Highways sector. The RFI will only take between 10 & 15 minutes to complete, at the end of the process you will be told if you have been shortlisted. If you have you will be invited to respond to the full Request for Quotation (RFQ), which will be issued shortly after the RFI closes. Please see attached the link with a project overview - https://nationalhighways.co.uk/our-roads/a428-black-cat-to-caxton-gibbet/ To respond to our expression of interest request, please see this link which will take you to a Microsoft form - https://forms.office.com/r/nTQdtVFTiH ## Key Details | Field | Value | | --- | --- | | Publication source | Contracts Finder | | Latest notice | https://www.contractsfinder.service.gov.uk/Notice/4851656d-132a-41e5-8f3f-9d923670281c | | Notice type | Tender Notice | | Procurement type | Standard | | Procurement category | Works | | Procurement method | Not Specified | | Procurement method details | Other - Private Procurement | | Tender suitability | SME | | Awardee scale | Not specified | | All stages | Tender | ## Dates | Field | Value | | --- | --- | | Publication date | 3 Aug 2023 | | Submission deadline | 4 Sep 2023 | | Future notice date | Not specified | | Award date | Not specified | | Contract period | 8 Apr 2024 - 9 Apr 2025 | | 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 | Active | | Lots status | Not specified | | Awards status | Not specified | | Contracts status | Not specified | ## Buyer | Field | Value | | --- | --- | | Main buyer | SKANSKA CONSTRUCTION UK LIMITED | | Locality | RICKMANSWORTH | | Post town | Watford | | Postcode | WD3 9SW | | Country | England | | ITL 1 | TLH East (England) | | ITL 2 | TLH2 Bedfordshire and Hertfordshire | | ITL 3 | TLH27 South West Hertfordshire | | Local authority | Three Rivers | | Electoral ward | Chorleywood South & Maple Cross | | Westminster constituency | South West Hertfordshire | | Delivery location | Not specified | ## CPV Codes ### Divisions - 31 - Electrical machinery, apparatus, equipment and consumables; lighting ### Codes - 31682210 - Instrumentation and control equipment ## Release History - 3 Aug 2023 at 10:17 - Tender - Tender Notice - https://www.contractsfinder.service.gov.uk/Notice/4851656d-132a-41e5-8f3f-9d923670281c ## Documents - https://www.contractsfinder.service.gov.uk/Notice/4851656d-132a-41e5-8f3f-9d923670281c 3rd August 2023 - Opportunity notice on Contracts Finder - https://forms.office.com/r/nTQdtVFTiH To respond to our expression of interest request, please see the link above which will take you to a Microsoft form. ## Notice URLs - https://nationalhighways.co.uk/our-roads/a428-black-cat-to-caxton-gibbet/ ## 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-b5fd17-346ade80-f507-4fd5-9ff4-fcf3d64c0b74. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-b5fd17-346ade80-f507-4fd5-9ff4-fcf3d64c0b74.json.