UNC Modification Proposal 0172 National Grid Distribution UNC Distribution Workstream – 22nd November 2007 Chris Warner

Agenda Trigger Sources Standards Further Work

Trigger The proposer suggests “…disconnections of gas supply carried out to meter point or points prior to demolition of the site containing the affected meter points taking place” Link to demolition? Reliance on notices being received Difficulty to identify meter point from notice where received (see next slide) National Grid suggestion Issue notice to User of all relevant disconnections of which it becomes aware

Sample of Demolition Notices Received - Level of Information

Sources DISCONNECTION DISCONNECTION BY NATIONAL GRID AS PART OF A MAINS DISCONNECTION PROJECT Planned REQUEST FROM USER OR THIRD PARTY FOR NATIONAL GRID TO UNDERTAKE DISCONNECTION Planned DISONNECTION ACTIONED AS A CONSEQUENCE OF AN EMERGENCY CALL Unplanned DISCONNECTION DISCONNECTION BY NATIONAL GRID AS PART OF REPLACEMENT PROJECT WHERE A SERVICE IS NOT RE-LAID Unplanned DISCONNECTION UNDERTAKEN BY THIRD PARTY AND NOTIFIED TO NATIONAL GRID Planned DISCONNECTION BY NATIONAL GRID PURSUANT TO GAS INSTALLATION & USE REGULATIONS Planned

Standards The proposer suggests “…within 10 working days of such gas supply disconnection prior to demolition being carried out by the Transporter” Link to demolition? Disconnection may be carried out by Third Party Start clock upon receipt of notice from Third Party of disconnection National Grid suggestion ‘As soon as reasonably practicable’ standard as opposed to 10 working days 10 working days standard may not be achievable taking account of the diverse sources of information

Further Work Identify any statutory communication requirements between parties. Identify operational processes that deliver any such requirements. Identify additional operational requirements required to deliver requirements of Modification Proposal 0172. Identify lead times required for implementation