National Gas - Compressor Acoustic Buildings (CABS) Maintenance for T3

National Gas Transmission (NGT) is currently looking to understand the market for maintenance of its Compressor Acoustic Buildings (Cabs) which are located across ~21 sites in the United Kingdom.

The RFI can be found on Achilles under the name: National Gas - Compressor Cabs Maintenance for RIIO T-3 RFI or following this link my.achilles.com/buyer-request-inform… ↗

The purpose of this RFI is for NGT to better understand the expertise of contractors and their supply chain with regards to maintenance of compressor cabs. NGT is exploring market capabilities to create a robust, resilient strategy to drive value, develop long-term partnerships with key contractors, and to ensure safe, successful delivery of RIIO T-3. Current funding from OFGEM is indicating up to £100m for RIIO T-3. contract will not be awarded as a result of this RFI. This is not a formal tender process and is not being undertaken in accordance with the Utilities Contracts Regulations 2016.

RFI Issue: Tuesday, 3rd December 2024

RFI Submission Deadline: Friday, 13th December 2024

To respond to this RFI please fill out and return the attached spreadsheet: Appendix 1 - RFI Questions

Overview of Compressor Cabs Scope:

CAB maintenance and replacement activities to include Survey, Design, Supply, Manufacture, Installation and

Commissioning across the following areas / disciplines:

1. Cab Structure Remedial Works (Mechanical & Civil/Structural)

• Door refurbishment and replacements
• Cladding and seal repairs
• Roof repairs
• Paint upgrade and corrosion rectification
• Cab steelwork and access repairs

2. Ventilation System Upgrades (Mechanical, Civil, Electrical, Instrumentation & Control, Software )

Bringing Ventilation Systems across fleet in compliance with ISO21789 comprising of:

Participant a person (e.g. company, limited liability partnership, firm, joint venture, etc) involved in this

Procurement Process

RFI the Request For Information document requesting key information

RFI Questionnaire the questions asked in this RFI document

NGT National Gas Transmission

Reques t For Information (RF I) v1 .0 3

• New fans and motors
• New ductwork and support system
• Introduction of new ventilation filtration systems
• Fire & Gas system modifications (software & hardware)
• Fire dampers
• MCC Upgrades

3. Gas Turbine Exhaust System (Mechanical, Civil/Structural)

Exhaust Stack repair works

• Collector
• Compensator
• Relining of the ductwork
• General weld repairs

Replacement of Exhaust

• Assessment of BAT
• Exhaust stack
• Silencers
• Compensator
• Steelwork and supports and access with associated civils

4. Air Intake Filter House (Mechanical, Civil, Electrical, Control & Instrumentation, Software)

Repair

• Filter replacement
• Corrosion rectification and paintwork
• Refurbishment of existing system to E12 filtration
• Silencer refurbishment or replacement
• Flexible connections

Replacement of Filter House

• New Air Intake system (silencer, E12 filtration, weather hoods etc)
• Associated steelwork and access
• Lighting (Internal & External)

5. Principal Contractor

• Managing the above and potentially other CAB works (eg, fire suppression upgrades including minor civils)