Scope
Description
Supply, install and commissioning of network compatible odorant injection systems
This procurement covers the supply, installation, and commissioning of odorant injection systems to support operational reliability and compliance across designated gas sites. The systems are proprietary to the Supplier, requiring a single-source approach to ensure compatibility and maintain existing infrastructure standards.
Key Deliverables include:
• Delivery of ZEO odorant injection units with bund risers.
• Mechanical and electrical installation, including associated materials and pneumatic lines.
• Integration of electrical back plates, cabinet lighting, PRU and vent stack.
• Full retention of existing NJEX systems
• Commissioning and Factory Acceptance Testing (FAT) by Supplier.
• Hazardous waste disposal in line with environmental requirements.
• Supply and installation of 75m injection line and miscellaneous materials.
Geography and Scale: Deployment spans multiple operational sites within the UK gas network, ensuring continuity of odorization capability across the region.
Purpose: The upgrade will enhance system reliability, maintain regulatory compliance for gas odorization, and support safe network operations. Leveraging Supplier proprietary technology ensures seamless integration with existing assets and minimizes operational risk.
Commercial tool
Establishes a framework
Framework
Maximum percentage fee charged to suppliers
0%
Contracting authorities that may use the framework
Establishing party only
Contract 1. Supply, Install & Commission of Odorant Injection Systems
Supplier
Contract value
- £3,500,000 excluding VAT
- £4,200,000 including VAT
Above the relevant threshold
Earliest date the contract will be signed
1 January 2026
Contract dates (estimated)
- 1 January 2026 to 31 March 2027
- Possible extension to 31 March 2031
- 5 years, 3 months
Description of possible extension:
Initial Term until 31.03.2027 with extension provisions to utilise for a further 4x1 year terms
Main procurement category
Goods
Options
The right to additional purchases while the contract is valid.
Essential parts on proprietary equipment over and above initial equipment for reasons of safety, upgrades or such like
CPV classifications
- 39340000 - Gas network equipment
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)
Participation
Particular suitability
Small and medium-sized enterprises (SME)
Other information
Conflicts assessment prepared/revised
Yes
Procedure
Procedure type
Direct award
Special regime
Utilities
Direct award justification
- Single supplier - intellectual property or exclusive rights
- Single supplier - technical reasons
Under Schedule 5, a direct award is permissible where:
• Only a particular supplier can supply the goods, services, or works required due to technical reasons, and
• There are no reasonable alternatives or substitutes.
For this case:
• The odorant injection systems are proprietary to the Supplier, meaning the Supplier holds exclusive rights and technical know-how for these systems.
• Integration with existing NJEX infrastructure and compatibility requirements eliminate the possibility of alternative suppliers without incurring disproportionate technical risk or operational disruption.
• The scope includes commissioning and FAT by the Supplier, reinforcing that only Supplier can deliver the full requirement to specification.
This aligns with the clause in Schedule 5 covering single supplier scenarios due to exclusive rights or technical constraints. Risks of incompatibility and operational failure if another supplier were engaged.
Supplier
YZ SYSTEMS LTD
- Companies House: 05263022
- Public Procurement Organisation Number: PTGZ-7413-JTPL
North Hylton Road
Sunderland
SR5 3JD
United Kingdom
Email: accounts-uk@yzsystems.com
Website: http://www.yzsystems.com
Region: UKC23 - Sunderland
Small or medium-sized enterprise (SME): Yes
Voluntary, community or social enterprise (VCSE): No
Contract 1. Supply, Install & Commission of Odorant Injection Systems
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