Scope
Description
Northern Gas Networks require multiple suppliers on a framework agreement to provide products that will be used throughout the NGN network.
The purpose of this framework is to ensure continuity of supply of the sealant and associated equipment to the business at agreed rates, lead times and to ensure products conform to the correct specification and standards.
Items under the framework agreement must meet the necessary Gas Industry Standards in line with all new guidance and standards published.
Commercial tool
Establishes a framework
Total value (estimated)
- £3,000,000 including VAT
Above the relevant threshold
Contract dates (estimated)
- 1 September 2026 to 31 October 2029
- Possible extension to 31 October 2034
- 8 years, 2 months
Description of possible extension:
3 year initial term with the option to extend a further 5 x 1 years thereafter
Main procurement category
Goods
CPV classifications
- 39812500 - Sealants
Contract locations
- UKC - North East (England)
- UKD - North West (England)
- UKE - Yorkshire and the Humber
- UKF - East Midlands (England)
- UKG - West Midlands (England)
- UKH - East of England
- UKI - London
- UKJ - South East (England)
- UKK - South West (England)
Lot 1. Lot 1 - Annular sealants
Description
This sealant material is for internal application of sealant materials (which may be applied externally, being pumped into the annulus from an external source) used to prevent the passage of gas along the annulus formed between an inserted plastic pipe and an existing metallic pipe.
Lot value (estimated)
- £3,000,000 including VAT
Framework lot values may be shared with other lots
Same for all lots
CPV classifications, contract locations and contract dates are shown in the Scope section, because they are the same for all lots.
Lot 2. Lot 2 - Leakage Sealants
Description
Materials used to make a full permanent repair on either metallic or PE pipe by means of either internal or external application.
Lot value (estimated)
- £3,000,000 including VAT
Framework lot values may be shared with other lots
Same for all lots
CPV classifications, contract locations and contract dates are shown in the Scope section, because they are the same for all lots.
Lot 3. Lot 3 - Bar Hole Sealing
Description
A bar hole is a hole made in the soil or pavement with a hand-operated bar for the specific purpose of testing the subsurface atmosphere with a combustible gas indicator. The Materials used to plug a hole following bar hole work to provide a full permanent seal of the surface.
Lot value (estimated)
- £3,000,000 including VAT
Framework lot values may be shared with other lots
Same for all lots
CPV classifications, contract locations and contract dates are shown in the Scope section, because they are the same for all lots.
Lot 4. Lot 4 - Flow Stopping
Description
The objective is to temporarily stop the flow in a specific area of the network without disrupting the remainder of the local network.
Lot value (estimated)
- £3,000,000 including VAT
Framework lot values may be shared with other lots
Same for all lots
CPV classifications, contract locations and contract dates are shown in the Scope section, because they are the same for all lots.
Lot 5. Lot 5 - Live Insertion
Description
Utilising a gland box, the old main is kept live throughout the insertion process and the new PE is gassed up to maintain gas supplies to individual customers. After the new main is inserted, the main is still kept live to supply customers via the annular space between the two mains until it is convenient to transfer the services to the new main
Lot value (estimated)
- £3,000,000 including VAT
Framework lot values may be shared with other lots
Same for all lots
CPV classifications, contract locations and contract dates are shown in the Scope section, because they are the same for all lots.
Framework
Maximum number of suppliers
Unlimited
Maximum percentage fee charged to suppliers
0%
Framework operation description
NGN will award each individual line a primary & alternative supplier/s.
Award for alternative suppliers will only be given to any supplier that is awarded as a primary supplier of any line. If a supplier does not win any primary line, they will not be awarded a spot on the framework.
Award method when using the framework
Either with or without competition
Contracting authorities that may use the framework
Establishing party only
Submission
Submission type
Requests to participate
Deadline for requests to participate
16 September 2025, 5:00pm
Submission address and any special instructions
Please review the attached document and follow instructions within in order to participate in this event.
It is suppliers responsibility to follow all instructions to participate in the attached document within this tender notice.
Tenders may be submitted electronically
No
Languages that may be used for submission
English
Award decision date (estimated)
1 July 2026
Award criteria
| Name | Description | Type |
|---|---|---|
| RFP 1 - Non-Commercial | The Non-Commercial section will have weighted questions and weightings are detailed in NGNs tender platform Market Dojo. Suppliers must achieve a minimum percentage score of 70% to pass this section... |
Price |
| RFP 2 - Commercial | Suppliers can BID for any lines under the lot/s they put in for. Suppliers do not have to BID on all lines under each lot/s they put in for. Suppliers must include: Price per unit, Lead Time, MOQ... |
Price |
Weighting description
RFP 1 - Non-Commercial - Q&A
RFP 2 - Commercial - Pricing & Contract Challenges
Other information
Conflicts assessment prepared/revised
Yes
Procedure
Procedure type
Competitive flexible procedure
Special regime
Utilities
Competitive flexible procedure description
This procurement will follow the following process:
- Tender notice issued (this notice) for 25 days
- Interested suppliers to follow Market Dojo link to the Conditions of Participation stage (Pass/Fail)
- Suppliers who Pass the Conditions of Participation will be invited to Accreditations Questionnaire (Pass/Fail)
- Suppliers who Pass the Accreditations Questionnaire will be invited to a PQQ
- The PQQ end date 31st October 2025
- PQQ responses evaluated
- Suppliers who score over 60% will be invited to tender (RFP Phase 1)
- RFP Phase 1 live until 13th February 2026
- RFP Phase 1 responses evaluated based on 100% non- commercial (Suppliers must achieve a minimum % score of 70% to move on to RFP 2)
- All participants who pass RFP Phase 1 will be invited to RFP Phase 2.
- RFP Phase 2 live until 8th May 2026
- RFP Phase 2 responses evaluated based on 100% Contract Challenges (Information only Commercial section)
- Final evaluations carried out
- Suppliers notified of the outcome
Full details are made available in the tender scope.
If supplementary stages are required throughout the process, or stages noted in the strategy defined above are no longer required, it is at NGN's discretion to include or remove stages.
It is at the discretion of NGN to change the weightings/criteria or add additional sub-criteria/weightings to the PQQ or RFP if there is a need to do so before the submission deadline of the relevant stage.
Any changes to the evaluation criteria will be communicated
to all Bidders.
Contracting authority
NORTHERN GAS NETWORKS LIMITED
- Companies House: 05167070
- Public Procurement Organisation Number: PRNB-9357-PVLR
1100 Century Way
Colton Leeds
LS15 8TU
United Kingdom
Region: UKE42 - Leeds
Organisation type: Private utility