Review of Section L – Maintenance and Operational

Planning

A Presentation to the Transmission Workstream – November 2005

Steve Gordon, ScottishPower Energy Management Limited

Overview

• Relevant changes since 1996

• What Hasn’t Changed much?

• Time for a review?

• Current Mod

• NG response and proposed mod

• Other Issues for Consideration

Changes To the Market• Advent of competition

• Growth of the CCGT market

• Increase in the number of directly connected sites to NTS

• Advent of NETA then BETTA

• DN Sales & diversity of ownership of transportation network

• Closer alignment of the gas and electricity regimes

• Move towards import dependency and a requirement for demand-side response.

What Hasn’t Changed Much during that time?

• NExAs – specifying information about offtake rates, notice periods and planned maintenance

• Section L!

Time for a Review?

Yes

Mod 060

• Discussed with NGT and sent to consultation on 20th October

• Main Aims:– Ensure that information is provided to

maintenance affected points in the spirit of the intent of the code.

– Ensure confidentiality of that information.

NGT Initiative

• Earlier publication of information on system affected points

• Early confirmation of window

• Earlier confirmation of exact dates

• New mod (discussed today) codifies this approach

Other Issues

• Distribution and Transmission Maintenance Programmes

• Classification/Categorisation of Different Types of Works

• Publication of Inspection Programme Information

• Incentivising an Efficient Maintenance Programme