Below 2 Bar Risk Model

Cadent, working with Northern Gas Networks, SGN and Wales & West Utilities, is seeking information from the market to inform the potential development of a future Below 2 Bar Risk Model. The capability would support public-safety risk assessment, network planning and regulatory decision-making associated with GD4 / RIIO-4 and beyond.
The current Mains Replacement Prioritisation System has supported the Iron Mains Risk Reduction Programme. The participating Gas Distribution Networks are now considering how a shared, defensible and future-proof approach could preserve safety performance while improving transparency, auditability and consistency across networks.
1.1 Current context:
• The future model is intended to provide transparent intelligence that supports intervention and investment prioritisation, without itself making operational decisions or generating work packages.
• Its core purpose is public-safety risk assessment for relevant distribution assets operating up to 2 bar. Worker risk, monetisation and economic factors are outside the core risk calculation.
• The model must be capable of supporting regulator scrutiny and consistent interpretation across the participating Gas Distribution Networks.
1.2 Information sought from the market:
This RFI is deliberately concise. It seeks an early indication of market capability, material gaps and relevant experience. It is not intended to request a detailed solution, delivery plan, commercial proposal or evidential response at this stage. More detailed information may be requested through the subsequent Expression of Interest, Pre-Qualification Questionnaire and Invitation to Tender stages.
High Level Scope:
The proposed capability is a common, transparent and auditable public-safety risk model for relevant gas distribution assets operating at pressures up to 2 bar. It should provide risk intelligence that enables the participating Gas Distribution Networks to understand and compare risk consistently, identify the...