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​​​​​​​​​Historical Critical Contingency Events & Notices

This page is used to publish information including notices, updates and reports relating to historical critical contingency events and exercises. For information relating to a current Critical Contingency Event refer to the Current CC Events page.

 

23/05/2017 - System Imbalance Event

On 23 May, the CCO declared a Critical Contingency following a breach of the Kapuni​​ Gas Treatment Plant pressure threshold.  The Incident Report for this event is available below.  The CCO is currently preparing a Performance Report for this event to be published within 30 business days of the event. This report will assess the Critical Contingency in more detail and provide the opportunity for Stakeholders to make submissions on the draft report. 

​DateTime​​Notice IDNotice Type​​Issued To​Notice (Link)
​30/05/2017

​Critical Contingency Incident Report
​Stakeholders
CCO Incident Report System Imbalance 23 May 2017.pdf
​23/05/2017
​18:20
​CC-0041
Critical Contingency Termination​
​TSO & Stakeholders

Critical Contingency Termination Notice CC-0041.pdf
​23/05/2017​15:20
​CC-0040
​Critical Contingency Status Update #2StakeholdersStatus Update Notice 2 CC-0040.pdf
​23/05/2017

​13:10
​CC-0039
​Critical Contingency Status Update
​Stakeholders
Status Update Notice CC-0039.pdf
​23/05/2017
​11:10
​CC-0038
​Critical Contingency Declaration
​​TSO & Stakeholders
Critical Contingency Declaration Notice CC-0038.pdf



11/04/2017 - Exercise Interface

The CCO conducted its annual industry exercise - "Exercise Interface" on the 11/04/2017.

The exercise started at 9:00am and ran through until 4:00pm. The exercise simulated accidental damage to the First Gas Ltd Maui pipeline north of Pirongia resulting in an uncontrolled gas escape.  This resulted in the transmission pipeline system north of Pirongia being isolated for 24 hours while repairs were carried out.  In order to conserve linepack and pressure in the system, the CCO issued curtailment instructions affecting consumers in Bands 1 to 6.   

The CCO would like to thank all the participants involved in the exercise.

DateTime​​Notice IDNotice Type​​Issued To​Notice (Link)
​11/05/2017
​CCO Annual Exercise Report
​Stakeholders
CCO Exercise Interface Report 11 May 2017.pdf
​11/04/2017

​3:30pm
​CC-0037
​Termination Notice
​First Gas TSO & Stakeholders
CC-0037 Critical Contingency Termination Notice.pdf
​11/04/2017

​2:30pm
​CC-0036
​Notice to Restore Curtailed Demand
​First Gas TSO
CC-0036 Direction to Restore Curtailed Demand.pdf
​11/04/2017

​12:45pm
​CC-0035
​Status Update #2
​Stakeholders
CC-0035 Status Update Notice.pdf
​11/04/2017

​11:30am
​CC-0034
​Notice to Retailers For Media Appeals
​Retailers
CC-0034 Notice to Retailers to Implement Media Appeals.pdf
​11/04/2017

​11:00am
​CC-0033
​Revised Demand Curtailment
​First Gas TSO
CC-0033 Revised Demand Curtailment Notice.pdf
​11/04/2017
​10:30am
​CC-0032
​Status Update #1
​Stakeholders
CC-0032 Status Update Notice.pdf
​11/04/2017

​10:00am
​CC-0031
​Demand Curtailment
​First Gas TSO
CC-0031 Direction to Curtail Demand Notice.pdf
11/04/2017​

​9:30am
​CC-0030
​Declaration Notice
​First Gas TSO & Stakeholders
CC-0030 Critical Contingency Declaration Notice.pdf
​​09/02/2017

​CCO Annual Exercise - Participants Brief

CCO Annual Exercise 2017 Participant's Brief.pdf


​22/06/2016 - Exercise Kakama

​DateTime​​Notice IDNotice Type​​Issued To​Notice (Link)
20/07/2016​09:00​CCO Annual Exercise Report​StakeholdersCCO Exercise Kakama Report 20 July 2016.pdf
​22/06/2016​15:10​CC-0029Termination of Critical Contingency

First Gas TSO Stakeholders   Interested Parties

CC-0029 Critical Contingency Termination Notice.pdf
​22/06/2016​14:00​CC-0028​Direction to Restore Demand​First Gas TSOCC-0028 Direction to Restore Curtailed Demand Notice.pdf
​22/06/2016​12:30​CC-0027​Status Update​Public & StakeholdersCC-0027 Status Update Notice.pdf
​22/06/2016​10:15​CC-0026​Direction to Curtail Demand​First Gas TSOCC-0026 Direction to Curtail Demand Notice.pdf
​22/06/2016​09:30​CC-0025Declaration of Critical ContingencyFirst Gas TSO Stakeholders   Interested PartiesCC-0025 Critical Contingency Declaration Notice.pdf
03/05/2061CCO Annual Exercise Participants BriefCCO Annual Exercise Participant's Brief 2016.pdf

 


24/05/2016 - Unplanned Production Station Outages

​DateTime​​Notice IDNotice Type​​Issued To​Notice (Link)
​12/08/2016​10:00

CCO Performance Report

​First Gas TSO & StakeholdersFinal Critical Contingency Performance Report 12 August 2016.pdf
​31/05/2016
​16:30

​CCO Incident Report
​TSOs & Stakeholders

CCO Incident Report Pohokura Unplanned Outage 24 May 2016.pdf
​24/05/2016​23:00
​CC-0024
​Critical Contingency Termination​TSOs, Stakeholders & Interested PartiesCritical Contingency Termination Notice CC-0024.pdf
​24/05/2016

​19:30
​CC-0023
​Critical Contingency Status Update
​Stakeholders
Status Update Notice CC-0023.pdf
​24/05/2016
​18:30
​CC-0022
​Critical Contingency Declaration
​​TSOs, Stakeholders & Interested Parties
Critical Contingency Declaration Notice CC-0022.pdf


 24/06/2015 - Exercise Validation

​DateTime​​Notice IDNotice Type​​Issued To​Notice (Link)
22/07/2015​CCO Annual Exercise Report​Stakeholders2015-07-22 CCO Exercise Validation Report FINAL.pdf
​01/07/2015​CCO Annual Exercise Retailers Self Assessment Form​RetailersCCO Annual Exercise Retailer Self Assessment Form (Appendix F).docx
​24/06/2015​14:45​CC-0021​CC Termination​StakeholdersCC-0021 Termination.pdf
​24/06/2015​14:25​CC-0020​CC Restore Demand​Vector TSOCC-0020 Restore.pdf
​24/06/2015​12:45​CC-0019​CC Status Update​PublicCC-0019 Status Update.pdf
​24/06/2015​12:00​CC-0018​CC Media Appeals​RetailersCC-0018 Media Appeals.pdf
​24/06/2015​11:45​CC-0017​CC Revised Curtailment​Vector TSOCC-0017 Revise.pdf
​24/06/2015​11:00​CC-0016​CC Curtailment​Vector TSOCC-0016 Curtail.pdf
​24/06/2015​08:58​CC-0015​CC DeclarationStakeholdersCC-0015 Declaration.pdf
​25/05/2015​CCO Annual Exercise Participants BriefExercise Participants2015-05-26 CCO Annual Exercise Participant's Brief.pdf

 

25/06/2014 - Exercise Evolution

​DateTime​​Notice IDNotice Type​​Issued To​Notice (Link)
​24/07/2014​Exercise Report​Exercise ParticipantsCCO Exercise report.pdf
​25/06/2014​15:10​CC-0012​Status Update NoticeTSO's

(cc: to Stakeholders)

CC-0012 Status Update.pdf
25/06/201415:10​CC-0011​Direction to Restore Curtailed DemandTSO's

(cc: to Stakeholders)

CC-0011 Restore.pdf
​25/06/2014​12:20CC-00010​​Status Update Notice

​Stakeholders

(cc: TSO's)

CC-0010 Status Update.pdf
​25/06/2014​11:30​CC-0009​Direction to Revise Demand Curtailment Notice

​TSO's

(cc: to Stakeholders)

CC-0009 Revise.pdf
​25/06/2014​10:40​CC-0008​Direction to Curtail DemandTSO's

(cc: to Stakeholders)

CC-0008 Curtail.pdf
25/06/20140​9:00CC-0007​Critical Contingency Declaration Notice​TSO's, Stakeholders & Interested PartiesCC-0007 Declaration.pdf
​12/05/2014​Participants Brief​TSO's & Stakeholders2014-05-12 Participant's brief.pdf

 

20/03/2013 - Exercise Tawiri

​DateTime​​Notice IDNotice Type​​Issued ToNotice (Link)
19/04/2013​Exercise Report​Exercise participantsCCO Exercise Tawiri Report.pdf
​20/03/2013​15.00​15892​​Exercise Ended​TSO & Stakeholders15892 - CCO - 1500 200313 Exercise Tawiri has now ended.pdf
​20/03/2013​14.40​15891​Termination of Critical Contingency​TSO & Stakeholders​​​​15891 - CCO - 14.40 20-03-13 Exercise Tawiri Termination of Critical Contingency .pdf
​20/03/2013​14.00​15890Direction to Restore Demand​TSO & Stakeholders15890 - CCO - 14.00 20-03-13 Exercise Tawiri Direction to Restore Demand No 2.pdf
​20/03/2013​13.10​15888​Direction to Restore Demand​TSO & Stakeholders​​15888 - CCO - 13.10 20-03-13 Exercise Tawiri Direction to Restore Demand No 1.pdf
​20/03/2013​12.20​15887​Status Update​TSO & Stakeholders​​15887 - CCO - 12.20 20-03-13 Exercise Tawiri Status Update No 2.pdf
​20/03/2013​10.35​15881Status Update​​TSO & Stakeholders15881 - CCO - 10.35 20-03-13 Exercise Tawiri Status Update Notice No 1.pdf
​20/03/2013​10.20​15880​Revised Demand Curtailment Direction​TSO & Stakeholders15880 - CCO - 10.20 20-03-13 Exercise Tawiri Revised Demand Curtailment Direction No 2.pdf
​​20/03/2013​09.30​15877​​Direction to Curtail Demand​TSO & Stakeholders15877 - CCO - 0930 20-03-13 Exercise Tawiri Direction to Curtail Demand No 1.pdf
20/03/201309.00​15876​Declaration of Critical Contingency​TSO & Stakeholders​​15876 - CCO - 09.00 20-03-13 Exercise Tawiri - Declaration of Critical Contingency .pdf
20/03/2013​08.00​15875​Exercise Commenced​TSO & Stakeholders​​15875 - CCO - Exercise Tawiri Commenced .pdf
​Briefing Report​Exercise participantsParticipants Briefing - Exercise Tawiri.pdf

 

3​0/03/2012 - Pohokura Outage

​​​Date​Time​​Notice ID​Notice Type​Issued ToNotice (Link)
​02/04/2012​Performance Report​TSO & Stakeholders120402 Critical Contingency Performance Report.pdf
​09/03/2012​Incident Report​TSO & Stakeholders120309 Critical Contingency Incident Report.pdf
​03/03/2012​23.30​12272Termination of Critical Contingency​TSO & Stakeholders12272 - CCO - 23.30 03-03-12 - Termination of Critical Contingency .pdf
​03/03/2012​21.30​12271Restore Demand​TSO & Stakeholders12271 - CCO - 21.30 03-03-12 - Direction to Restore Demand .pdf
​03/03/2012​17.30​12270Status Update​TSO & Stakeholders12270 - CCO - 17.30 03-03-12 - Critical Contingency Status Update .pdf
​03/03/2012​13.20​12264​Direction to Curtail Demand​TSO & Stakeholders12264 - CCO - 13.20 03-03-12 - Direction to Curtail Demand .pdf
​03/03/2012​12.50​12262Declaration of Critical Contingency​TSO & Stakeholders12262 - CCO - 12.50 03-03-12 - Declaration of Critical Contingency .pdf
​03/03/2012​09.15​12237​Potential Critical Contingency​TSO & Stakeholders12237 - CCO - 09.15 03-03-12 Notice of Potential Critical Contingency .pdf

 

25/10/2011 - Maui Pipeline Outage

​​Date​​Time​Notice ID​Notice Type​Issued ToNotice (Link)
​22/12/2011​Performance Report111222 Critical Contingency Performance Report.pdf
​04/11/2011​Incident Report111104 Critical Contingency Incident Report.pdf
​30/10/2011​12.00​11303​Termination of Critical Contingency​TSO & Stakeholders11303 - CCO - 12.00 30-10-11 - Termination of Critical Contingency .pdf
​30/10/2011​03.30​11296​Restore Demand​TSO & Stakeholders11296 - CCO - 03.30 30-10-11 - Direction to Restore Demand .pdf
​30/10/2011​03.30​11295​Restore Demand​TSO & Stakeholders11295 - CCO - 03.30 30-10-11 - Direction to Restore Demand .pdf
​30/10/2011​02.30​11294​Restore Demand​TSO & Stakeholders11294 - CCO - 02.30 30-10-11 - Direction to Restore Demand .pdf
​30/10/2011​02.30​11293Restore Demand​TSO & Stakeholders11293 - CCO - 02.30 30-10-11 - Direction to Restore Demand .pdf
​29/10/2011​13.10​11289​Status Update​TSO & Stakeholders11289 - CCO - 13.10 29-10-11 - Critical Contingency Status Update .pdf
​28/10/2011​14.00​11288​Status Update​TSO & Stakeholders11288 - CCO - 14.00 28-10-11 - Critical Contingency Status Update .pdf
​28/10/2011​10.50​11281​​Revise Demand Curtailment​TSO & Stakeholders11281 - CCO - 10.50 28-10-11 - Direction to Revise Demand Curtailment .pdf
​28/10/2011​10.55​11280​​Revise Demand Curtailment​TSO & Stakeholders​​11280 - CCO - 10.55 28-10-11 - Direction to Revise Demand Curtailment .pdf
​27/10/2011​10.20​11274​​Revise Demand Curtailment​TSO & Stakeholders11274 - CCO - 10.20 27-10-11 - Direction to Revise Demand Curtailment .pdf
​27/10/2011​10.20​11273​​Revise Demand Curtailment​TSO & Stakeholders11273 - CCO - 10.20 27-10-11 - Direction to Revise Demand Curtailment .pdf
​26/10/2011​13.45​11267​Status Update​TSO & Stakeholders11267 - CCO - 13.45 26-10-11 - Critical Contingency Status Update .pdf
​26/10/2011​09.45​11261​Revise Demand Curtailment​TSO & Stakeholders11261 - CCO - 09.45 26-10-11 - Direction to Revise Demand Curtailment .pdf
​26/10/2011​09.45​11260​Revise Demand Curtailment​TSO & Stakeholders11260 - CCO - 09.45 26-10-11 - Direction to Revise Demand Curtailment .pdf
​25/10/2011​15.56​11251​Status Update​TSO & Stakeholders11251 - CCO - 15.56 25-10-11 - Critical Contingency Status Update .pdf
​25/10/2011​10.40​11238​Revise Demand Curtailment​TSO & Stakeholders11238 - CCO - 10.40 25-10-11 - Direction to Revise Demand Curtailment .pdf
​25/10/2011​10.40​11237Revise Demand Curtailment​TSO & Stakeholders11237 - CCO - 10.40 25-10-11 - Direction to Revise Demand Curtailment .pdf
​25/10/2011​05.20​11228​Status Update​TSO & Stakeholders11228 - CCO - 05.20 25-10-11 - Critical Contingency Status Update .pdf
​25/10/2011​02.35​11227Direction to Curtail Demand​TSO & Stakeholders11227 - CCO - 02.35 25-10-11 - Direction to Implement Demand Curtailment .pdf
​25/10/2011​01.25​11224Declaration of Critical Contingency​TSO & Stakeholders11224 - CCO - 01.25 25-10-11 Declaration of Critical Contingency .pdf
​24/10/2011​22.55​11219Potential Critical Contingency​TSO & Stakeholders11219 - CCO - 22.55 24-10-11 Notification of Potential Critical Contingency .pdf

 

​16/03/2011 - Exercise Tuarua

​​Date​Time​Notice ID​Notice Type​Issued ToNotice (Link)
​10/05/2011​CCO Report​Exercise ParticipantsExercise Tuarua - CCO Report.pdf
​16/03/2011​16.35​9610Exercise Ended​TSO & Stakeholders9610 - CCO - 16.35 16-03-11 Exercise Tuarua - Exercise Ended .pdf
​16/03/2011​15.45​9608​Termination of Critical Contingency​TSO & Stakeholders9608 - CCO - 15.45 16-03-11 Exercise Tuarua - Termination of Critical Contingency.pdf
​16/03/2011​14.35​9607​Demand Restoration​Exercise Participants9607 - CCO - 14.35 16-03-11 - Exercise Tuarua Demand Restoration Notice .pdf
​16/03/2011​11.57​9604​Revise Demand CurtailmentExercise Participants9604 - CCO - 11.57 16-03-11 Exercise Tuarua Demand Curtailment Revision Direction No 2.pdf
​16/03/2011​10.30​9603​Status UpdateExercise Participants9603 - CCO - 10.30 16-03-11 Exercise Tuarua Status Update Notice .pdf
​16/03/2011​09.40​9599​Direction to Curtail DemandExercise Participants9599 - CCO - 09.40 16-03-11 Exercise Tuarua - Demand Curtailment Direction Notice No 1.pdf
​16/03/2011​09.01​9595​Declaration of Critical ContingencyExercise Participants9595 - CCO - 09.01 16-03-11 Exercise Tuarua Declaration of critical contingency .pdf
​16/03/2011​08.00​9592​Exercise Commenced​Exercise Participants9592 - CCO - 08.00 16-03-11 Exercise Tuarua Commenced .pdf
​Briefing Notes​Exercise ParticipantsParticipants Briefing Notes.pdf

 

​13/07/2010 - Pohokura Outage

​​Date​Time​Notice ID​Notice Type​Issued ToNotice (Link)
​10/08/2010​Performance Report100810 Critical Contingency Performance Report.pdf
​20/07/2010​Incident Report100720 Critical Contingency Incident Report.pdf
​13/07/2010​22.34​8012​Termination of Critical Contingency​TSO & Stakeholders8012 - CCO - 22.34 100713 Termination of Critical Contingency .pdf
​13/07/2010​19.37​8004Declaration of Critical Contingency​TSO & Stakeholders8004 - CCO - 19.37 100713 Declaration of Critical Contingency .pdf
​13/07/2010​17.53​8000​Potential Critical Contingency​TSO & Stakeholders​​8000 - CCO - 17.53 100713 Potential Critical Contingency .pdf

 

​05/02/2010 - Exercise Initial

​​Date​​Time​Notice ID​Notice Type​Issued ToNotice (Link)
​CCO Report​Exercise ParticipantsExercise Initial - CCO Report.pdf
​05/02/2010​7172​Termination of Critical Contingency​TSO & Stakeholders7172 - CCO - Exercise Initial - Termination of Critical Contingency.pdf
​05/02/2010​7169​Demand Restoration​TSO & Stakeholders7169 - CCO - Exercise Initial - Restore Demand 3 .pdf
​05/02/2010​7166​Demand Restoration​TSO & Stakeholders7166 - CCO - Exercise Initial - Demand Restoration 2 .pdf
​05/02/2010​7163​Restore DemandT​SO & Stakeholders7163 - CCO - Exercise Initial - Restore Demand.pdf
​05/02/2010​7158​Status Update​TSO & Stakeholders7158 - CCO - Exercise Initial - Situation Update .pdf
​05/02/2010​7150​Revise Demand Curtailment​TSO & Stakeholders7150 - CCO - Exercice Initial - Revise Demand Curtailment.pdf
​05/02/2010​7146​Revise Demand Curtailment​TSO & Stakeholders7146 - CCO - Exercise Initial - Revise Demand Curtailmant .pdf
​05/02/2010​7143Direction to Curtail Demand​TSO & Stakeholders7143 - CCO - Exercise Initial -Direction to Implement Demand Curtailment .pdf
​05/02/2010​7139​Critical Contingency Declaration​TSO & Stakeholders7139 - CCO - Exercise Initial - Criical Contingecy Declaration.pdf
​​05/02/2010

​Participants Briefing​Exercise ParticipantsParticipants Briefing.pdf

 
Potential Critical Contingencies

​​​Date
​Time
​Notice ID
​Notice Type
​Issued To
​​Notice (Link)
​16/04/2015​11:00​CC-0014​Termination of Potential Critical Contingency​Vector & MDL TSO'sCC-0014 Potential Termination.pdf
​15/04/2015​15:00​CC-0013​Potential Critical Contingency Declaration​Vector & MDL TSO'sCC-0013 Potential.pdf
​12/07/2012
22.49​
​13563
​Termination of Potential Critical Contingency
​TSO & Stakeholders
13563 - 12-07-12 Termination of Potential Critical Contingency Oanui Outage.pdf
​12/07/2012
​18.16
​13560
​Status Update
​TSO & Stakeholders
13560 - 12-07-12 Potential Critical Contingency Status Update No 2 Oanui Outage.pdf
​12/07/2012
​15.50
​13555
​Status Update
​TSO & Stakeholders
13555 - 12-07-12 Potential Critical Contingency Status Update Oanui Outage.pdf
​12/07/2012
​09.04
​13545
​Potential Critical Contingency Declaration
​TSO & Stakeholders
13545 - 12-07-12 Potential Critical Contingency Oanui Outage.pdf
​15/08/2011
​16.18
​10737
​Termination of Potential Critical Contingency
​TSO & Stakeholders
10737 - 15-08-11 - Termination of Potential Critical Contingency Oanui Power Outage.pdf
​15/08/2011
​13.54
​10736
​Status Update
​TSO & Stakeholders
10736 - 15-08-11 Potential Critical Contingency Status Update Notice Oanui Power Outage.pdf
​15/08/2011
​12.07
​10733
​Status Update
​TSO & Stakeholders
10733 - 15-08-11 - Potrential Critical Contingency Status Update Notice Oanui Power Outage.pdf
​15/08/2011
​10.27
​10724
​Potential Critical Contingency Declaration
​TSO & Stakeholders
10724 - 15-08-11 Potential Critical Contingency Notification Oanui Power Outage.pdf
​22/07/2011
​16.33
​10552
​Termination of Potential Critical Contingency
​TSO & Stakeholders
10552 - 22-07-11 Termination Of Potential Critical Contingency 300 Line.pdf
​22/07/2011
​09.57
​10547
​Status Update
​TSO & Stakeholders
10547 - 22-07-11 Potential Critical Contingency Status Update 300 Line.pdf
​21/07/2011
​18.28
​10545
​Status Update
​TSO & Stakeholders
10545 - 21-07-11 Potential Critical Contingency Status Update 300 Line.pdf
​21/07/2011
​13.08
​10532
​Status Update
​TSO & Stakeholders
10532 - 21-07-11 Potential Critical Contingency Status Update 300 Line.pdf
​21/07/2011
​09.52
​10525
​Status Update
​TSO & Stakeholders
10525 - 21-07-11 Potential Critical Contingency Status Update 300 Line.pdf
​21/07/2011
​07.34
​10523
​Status Update
​TSO & Stakeholders
10523 - 21-07-11 Potential Critical Contingency Status Update 300 Line.pdf
​20/07/2011
​17.52
​10522
​Potential Critical Contingency Declaration
​TSO & Stakeholders
10522 - 20-07-11 Notification of Potential Critical Contingency 300 Line.pdf
​24/02/2011
​14.26
​9460
​Termination of Potential Critical Contingency
​TSO & Stakeholders
9460 - 24-02-11 Termination of Potential Critical Contingency Pohokura Outage.pdf
​24/02/2011
​09.20
​9447
​Status Update
​TSO & Stakeholders
9447 - 24-02-11 Potential Critical Contingency Status Update Pohokura Outage.pdf
​24/02/2011
​08.04
​9444
​Potential Critical Contingency Declaration
​TSO & Stakeholders
9444 - 24-02-11 Potential Critical Contingency Pohokura Outage.pdf