A Critical Contingency was declared by the Critical Contingency Operator (CCO) at 10:50 on Tuesday 23 May 2017.
The cause of the event was low linepack due to downstream delivery points taking significantly more gas than was being injected into the pipeline, which was exacerbated during a planned outage of the Pohokura Production Station. During the period of this outage, the imbalance between supply and demand caused pipeline linepack and pressures to fall to the point where the critical contingency threshold of 3 hours to 37.5 barg at the Kapuni Gas Treatment Plant was breached. The Critical Contingency was terminated at 18:15 the same day, after Pohokura returned to expected flows and the CCO considered that the supply of gas into the system was sufficient to meet expected demand.
Critical Contingency Price
Under regulations 67 to 72, Gas Industry Co is required to engage an industry expert to determine a critical contingency price that will be applied to contingency imbalances sustained by interconnected parties and shippers during a critical contingency event. Tim Denne of Covec was engaged as the independent expert for this work. his final critical contingency price report is available below.
The CCO is required to produce a performance report that assesses the effectiveness of the critical contingency arrangements and, where applicable, identifies any improvements. On 30 June, a draft report was released for public comment, as well as a feedback form for submissions. Copies of both can be found below.
The CCO is accepting submissions on the report until Friday, 14 July. Submissions should be sent to email@example.com
Further information on the event can be found on the CCO website here.