OC10

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  • Created by: ellieedf
  • Created on: 24-04-20 12:41

Purpose of OC10

OC10 sets out the requirements for written reports for significant incidents that were initially reported orally under OC7.

OC10 also sets out the mechanism for a joint investigation if NG and the relvant users agree.

OC10 applies to: 

  • NG
  • Generators
  • Network Operators
  • Non embedded customers
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Communications

  • If NG determines the originally reported event to be a significant incident, the user will have to submit a written report
  • If the user determines the originally reported event to be a significant incident, NG will have to submit a written report, which the user may NOT pass on.
  • A network operator may use the information in the written report to prepare a report to a generator with a generating unit on the system or another network operator of another system connected to theirs.
  • A generator may use the information in the written report to prepare a report to another generator with a generating unit connected to the same system or a network operator on another connected system.
  • If we were to witness a trip at a station, which could be due to a grid fault, then we should consider issuing NG an OC10 to find out whether a grid fault as caused the trip. We should first phone NG to inform them of the intention to raise a significant incident report and then follow this up in writing via fax.
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What is a significant incident?

  • Generating substantially over a PN/MEL
  • Syncing more than five mins early
  • Desyncing more than five minutes late 
  • Generating without a PN
  • Breaking the Grid Code

A full report must be submitted, within 2 hours of recieving oral notifications under OC7.

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Joint Investigation

NG or a user who has recieved a written report can request investigation. 

All rules and procedure for a joint investigation will be agreed between NG and the users - if no agreement can be made then there will be no joint investigation. A request for a joint investigation must be made in writing.

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