Order NB-001-2018 (Amendment No. 2) to Westcoast Energy Inc. pursuant to section 51.1 of the National Energy Board Act
INSPECTION OFFICER ORDER NO. NB-001-2018 (Amendment No. 2)
IN THE MATTER OF THE NATIONAL ENERGY BOARD ACT,
AN ORDER UNDER SECTION 51.1
is employed by Westcoast Energy Inc. carrying on business as Spectra Energy Transmission (Westcoast), and/or is a person conducting a ground disturbance or construction on or near a facility located at Prince George, British Columbia.
On or about 10 October 2018 at 9:30pm Mountain Time, the undersigned National Energy Board (NEB) Inspection Officer conducted an inspection of the Westcoast NPS 30 Mainline (NPS 30 L1) and NPS 36 Loop (NPS 36 L2) near Prince George, British Columbia.
The Inspection Officer has determined that a hazard is being or will be caused based on the following facts:
- A rupture occurred on the NPS 36 L2 at 17:30 Pacific Time on 9 October 2018 (INC-2018-142) resulting in a failure of the line.
- The NPS 30 L1 is located in the same Right of Way as the NPS 36 L2.
- An investigation by the Transportation Safety Board is underway to identify causes and contributing factors of the NPS 36 L2 rupture.
- The causes and contributing factors of the NPS 36 L2 rupture have not yet been determined.
- Westcoast has not yet demonstrated that either of the lines are fit for service at full Maximum Operating Pressure following the rupture.
- Westcoast has voluntarily committed to implement pressure restrictions on both lines.
An Inspection Officer Order (NB-001-2018) was issued by the NEB on 10 October 2018 to provide immediate safety. NB-001-2018 (Amendment No. 1) was issued on 23 October 2018, specifying modified and additional measures to provide ongoing safety based on the receipt of more detailed information.
On 13 November 2018, Westcoast applied to vary Specified Measures (a) and (b) of NB-001-2018 (Amendment No. 1) to request an alternative restricted operating pressure (ROP), and to propose a modified schedule for implementation of the overpressure protection system (OPP), respectively. Based on an evaluation of the information provided by Westcoast, which includes an Engineering Assessment supporting the increase in the ROP, and details on Westcoast’s modified schedule for implementation of OPP, the Inspection Officer is satisfied that the NPS 36 L2 can be operated under the amended Specified Measures provided below.
Based on the above mentioned, the inspection officer has reasonable grounds to believe that a hazard to the safety or security of the public or of employees of a company or a detriment to property or the environment is being or will be caused by the construction, operation, maintenance or abandonment of the pipeline, or any part of a pipeline, an abandoned pipeline or any part of it, or a ground disturbance or the construction of a facility.
Therefore, Westcoast is HEREBY ORDERED,
pursuant to subsections 51.1(1) and 51.1(2) of the National Energy Board Act, to
- Westcoast shall not operate any segment of the NPS 36 L2 located between Station 2 to the Huntington Meter Station at a pressure above 85% of that segment's 60 day high pressure prior to the incident (Restricted Operating Pressure, or ROP1 for L2). Westcoast shall file with an NEB Inspection Officer (IO) confirmation that it has implemented the ROP within five (5) days after the date of issuance of this Inspection Officer Order. The ROP shall remain in place for a period of nine (9) months from the date of issuance of this Inspection Officer Order, or until Westcoast has demonstrated to the satisfaction of an IO, through an Engineering Assessment completed in accordance with CSA Z662-15 Clause 10.1, that the NPS 36 L2 is fit for service to safely operate at a pressure higher than the ROP. If this Inspection Officer Order is still in effect nine (9) months after its date of issuance, Westcoast shall submit an Engineering Assessment demonstrating that the NPS 36 L2 can be safely operated at a pressure not exceeding the ROP. Engineering Assessments may be filed on a segment-by-segment basis.
- Westcoast shall file with an IO, within 45 days of 23 October 2018, confirmation that the overpressure protection system for the NPS 36 L2 located between Station 2 to the Huntington Meter Station has been set in accordance with CSA Z662-15 Clause 10.9.5, as amended by ROP requirementsFootnote 1.
- Westcoast shall not operate the NPS 30 L1 located between Compressor Station 4A and Compressor Station 4B at a pressure above 80% of its 60 day high pressure prior to the incident (ROP for L1). Westcoast shall file with an IO confirmation that it has implemented the ROP within five (5) days after the date of the issuance of this Inspection Officer Order. The ROP shall remain in place until Westcoast has demonstrated to the satisfaction of an IO that the NPS 30 L1 is safe to operate at a pressure higher than the ROP, in consideration of any damage resulting from the NPS 36 L2 rupture.
|IO Designation #
|Date 16 November 2018
|210-517 10 Ave SW, Calgary AB T2R 0A8
- Date modified: