1. Provision of Interruption Information by DNOs to Transco NTS
Andy Malins

2. Proposal
Modify OAD to place an obligation on DNOs to provide their best estimate of the actual daily gas flows that will be available for Interruption.

3. Proposal
Issue
Transco NTS needs information on capacity available for interruption to aid management of transportation constraints and emergencies.
Information required under current Offtake Arrangements Document is insufficient to enable optimum decisions to be made.
Information required for start of winter 2005/06

4. Impact of Retaining Current Arrangements
“Spare” capacity
Int.
SOQ
Transco NTS need
(and call for) 75kWh
of interruption
100
100
Further actions
required
kWh
Available
Int cap.
kWh 50 50
Shortfall

5. Interruption Information
Interruption Manager predicts expected flows based on meter readings. Gives a realistic estimate of capacity available to be interrupted.
Anticipated Impact on DNOs
Minimal capital or development cost implication
Minimal system or process changes
Information
Based on SOQs
Predictive
Source
Pre-Hivedown
Yes
Transco
OAD No
DNOs
Proposal