LNG Storage Allocations in an Emergency Heather Lockyer – National Grid LNG Storage

Existing UNC  Z6.7.1 states that during an Emergency…  …notwithstanding Users' Nominations in respect of such Day … the aggregate quantity withdrawn on such Day will be apportioned between Users in the proportions in which they have gas-in-storage on such Day. Possibly leading to (when the NEC requests flows are reduced) …..  Users with no nomination allocated gas  Users with nominations allocated less than expected

Proposed Change  Retain existing rules for increase in flow  For reduction in flow:  Allocate according to nominations up to point when Emergency Instruction takes effect e.g. User noms 24 units from 06:00 and then 60 from 12:00, Emergency Instruction to stop flowing at 18:00. Flow 1/hour for 6 hours (06:00 – 12:00) 3/hour for 6 hours (12:00 – 18:00) => Allocation = 24

Proposed Change cont..  If requested to continue flowing after Emergency Instruction (at reduced rate) could allocate:  Pro-rata using existing latest noms  Pro-rata flows using booked deliverability (as for CLNG)  Pro-rata using stock levels