Digester Inspection and Refurbishment Works

Full CPV breakdown

• 45250000 — Construction works for plants, mining and manufacturing and for buildings relating to the oil and gas industry (primary)

Notice details

Buyer type

Utility

Competition

Restricted / competitive (suppliers are shortlisted first)

Contract type

Works

Procurement method

Competitive flexible procedure

Main category

Works

Above threshold

Yes

Legal basis

UKPGA 2023/54

Notice status

Active

Renewal

The Framework Agreement will be awarded for an initial term of four (4) years. Thames Water Utilities Limited reserves the right, at its sole discretion, to extend the duration of the Framework Agreement by additional periods of time, subject to a maximum total term of eight (8) years. The exercise of any extension will be at Thames Water Utilities Limited's discretion and will be based on a range of considerations, including: • the satisfactory performance of Framework suppliers against contractual requirements, including delivery, quality, health and safety, and commercial performance;[AL5.1] • the continued suitability of the Framework to meet Thames Water Utilities Limited's operational and strategic requirements; and • value for money and ongoing competitiveness of the Framework arrangements. There is no obligation on Thames Water Utilities Limited to exercise any or all of the extension options

Framework agreement

Yes

Framework details

Thames Water Utilities Limited is establishing this Framework as a single-lot, multi-supplier framework agreement for the delivery of digester inspection, repair, refurbishment and upgrade works. The Framework will be procured using a competitive flexible procedure. General operation of the Framework No supplier is guaranteed any minimum volume or value of work under the Framework. Call-off contracts will be awarded either: • through further competition between all appointed Framework suppliers; or • via award directly to a supplier on an objective basis For each call-off, Thames Water Utilities Limited will issue a call-off tender pack setting out: • the initial scope of works, • project-specific requirements and constraints, • pricing approach and assumptions, and • evaluation criteria. Tenderers will be required to submit both a technical and commercial proposal. Contracts will be awarded to the tenderer submitting the most advantageous tender in accordance with the criteria set out in the call-off documentation. Call-off contracts will be let using the NEC4 Engineering and Construction Contract (ECC) Option A (priced contract with activity schedule). Pricing mechanism At the framework award stage (ITN), tenderers will be required to submit a Framework Schedule of Rates, setting out their proposed: • labour rates, • plant and equipment rates, • daywork rates, and • rates for defined inspection, repair and refurbishment activities. These rates will form the baseline pricing structure for all future call-off contracts under the Framework. At call-off stage, for each further competition: • Thames Water will issue a call-off scope and associated pricing template • Tenderers will be required to propose quantities for each activity based on their methodology, inspection assumptions, and understanding of the scope • The total tendered price will be calculated by applying the tenderer's framework rates to their proposed quantities • Tenderers may, where they identify efficiencies specific to the call-off project, offer reduced rates compared to their submitted Framework Schedule of Rates, provided these are clearly identified and applied consistently within their pricing submission This approach will result in a priced Activity Schedule, consistent with NEC4 ECC Option A, which will form the basis of contract award. Submitted quantities and any proposed rate adjustments will be evaluated against clear criteria.

Submission method

If you are interested in participating, please complete this form: https://forms.cloud.microsoft/e/2007vhj6is

Enquiries close

25 Jun 2026

Award decision expected

3 Aug 2026

Reserved / special regime

Utilities

Language

EN

Published

11 Jun 2026 07:44

OCID

ocds-h6vhtk-06b25c

Notice ID

FA2309