1 / 12

Review of Offtake Arrangements Document Section I - NTS Operational Flows

Review of Offtake Arrangements Document Section I - NTS Operational Flows. 9 th July 2010 – Offtake Arrangements Workstream. Review --- how to approach?. Re-test some basic assumptions on why information is needed and WHAT it is used for (by NTS and DNs).

ron
Download Presentation

Review of Offtake Arrangements Document Section I - NTS Operational Flows

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Review of Offtake Arrangements DocumentSection I - NTS Operational Flows 9th July 2010 – Offtake Arrangements Workstream

  2. Review --- how to approach? • Re-test some basic assumptions on why information is needed and WHAT it is used for (by NTS and DNs). • Wouldn’t necessarily start with existing Section I rules • No hidden agendas..we all have businesses to run, safe and efficient so lets be efficient in this regard. • No tail wagging the dog! Let’s create a set of business requirements that work, NOT shoe horn procedures around pre existing rules that do NOT!

  3. Why now? • Inappropriate to knowingly continue in a potential non compliant position • Never a good time...momentum gained..keep it moving • Earliest possible signals for any I.S alterations to develop in existing systems (link to SOMSA timeframes or DNCS?) • Any issues lurking in Exit Reform from October 2012 flushed out in sufficient time to manage.

  4. Review Proposal – suggested T.O.R • General review of the current NTS Operational flow requirement arrangements and processes within UNC OAD Section I to determine if they are still appropriate, coherent and relevant. • Implications of any changes to OPNs • Implications of any revisions to pressure commitments between National Grid NTS and GDNs • Review of application of Low Demand Days • Suitability of percentage measures as Offtake tolerances • Aggregation of requests by LDZ vs Exit zone • Impact of the implementation of Modification Proposal 0195AV (‘Introduction of Enduring NTS Exit Capacity Arrangements’

  5. Things to consider • Should any conditions in OAD be amended to reflect a more relevant condition? • Are there any absent conditions which should be included? • What are the benefits for both parties (NTS and DNO) by adhering to existing OAD clauses (which may create additional workloads) to warrant full compliance?

  6. OFFTAKE PROFILE NOTICES (OPNs) • Implications of any changes to OPN requirements • Relevant usage & requirements by Networks • Differing interpretation of existing OPN requirements • Map to current OAD (Amend as required) • IS issues • Implementation timeframes

  7. Pressure Requirements • Why DNs need pressure requirements and WHEN! • Not every day? • Key times between 22.00 & 06.00 • What constrains NTS? Compressor costs? Other? • Impact on DNs – Linepack depletion... • Reporting of current OAD requirements.

  8. LOW DEMAND DAYS • To be expanded • the promotion of a co-operation clause....

  9. Offtake tolerances • Is the 10% (Offtake) and 3% (LDZ) measure correct? • Differentiation by offtake • Measurement by exit zones? • X% plus X metre tolerance? • Reporting requirements?

  10. Impact of Exit Reform (2012) • Separate or theme to run through all subject areas?

  11. Timeline July 9th Agree T.O.R and work plan 15 July - Take review Proposal to UNC Modification Panel for formal constitution of Review Group August 6th– Offtake WS / Review Group OPNS Exit zone vs LDZ measures September 3rd– Offtake W/S / Review Group Low demand Days Pressure Commitments October 8th– Offtake W/S / Review Group Sweep up

  12. Review of Offtake Arrangements DocumentSection I - NTS Operational Flows 9th July 2010 – Offtake Arrangements Workstream

More Related