OFO Declaration and Termination Summary

 

This summary is in accordance with Section 6.6(a) of the General Terms and Conditions of Rover’s Tariff

 

Due to cold weather forecasts, on December 16, 2022, Rover issued an extreme weather alert that Rover was preparing for increased pipeline utilization and reduced operational flexibility on its system.  Rover requested that, effective as of the December 19, 2022 Gas Day, all Delivery Point operators minimize over-takes and all Receipt Point operators minimize under-deliveries into the Rover system.  Rover also provided notice of the following:

 

·         Intraday scheduling reductions may be implemented to ensure that nominations match actual flowing quantities. Shippers are encouraged to submit their nominations for the Timely cycle.

·         Rover is requesting that all shippers minimize usage of the Auto-Unpark feature.  While not implemented now, Rover may require Shippers to terminate all Auto-Unpark nominations on the pipeline for the duration of the extreme weather. This requirement will be evaluated on a daily basis.

·         Rover reserves the right to issue OFOs if shippers do not comply with this alert or to further protect the system. 

 

            After the initial extreme weather alert on December 19, 2022, weather conditions grew increasingly severe (see Temperature chart below).  On December 26, 2022, at 9:40 am central time, Rover issued a Notice of Operational Flow Order because of the continued deterioration of the weather conditions and certain shippers’ failures to adjust their nominations as requested in the extreme weather alert.  Rover issued the OFO to be effective immediately to alleviate conditions that threatened the Rover system’s integrity, safety, or reliability of service.  Rover notified shippers that they were required to use their best efforts to comply with the OFO as soon as possible, but in no event later than three hours, after which the applicable scheduling charges or unauthorized overrun penalties would apply.  Accordingly, shippers and point operators were required to take the following actions:

 

·         All Auto-Unpark nominations must be reduced to zero in the Supply Zone.

 

·         All under-deliveries at receipt points must be brought to 0.

 

·         All Shippers must reduce their nominations to match physical flow into the system.

 

·         All unauthorized over runs must be brought to 0.

 

·         All scheduling variances are reduced to 5%. 

 

Rover also informed that all nominations for receipts must match the flow of gas volumes physically delivered to receipt points across the system until further notice.

 

Temperatures measured at Rover’s Leesville location were as follows:

 

 

 

Rover advised shippers that the OFO was expected to remain in place until December 28, 2022.  As seen in the following illustration, Rover experienced a significant drop in line pack levels due to volume shortages and certain shippers’ failure to adjust their nominations which eventually led to the necessity to issue the OFO.

 

 

 

            Additionally, as seen by the chart below generated by RonHEnergy.com, supply disruptions across the basin were significant during the affected period.

 

 

On December 28, 2022, at 9:00 am central time, Rover terminated the OFO because of improving circumstances related to weather and supply shortages on the system which led to increased line pack levels.  Also on December 31, 2022, at 10:19 am central time, Rover issued Update #1 to its extreme weather alert ending the restrictions.