StatusA 10-day final ballot for TPL-007-4 –
Transmission System Planned Performance for Geomagnetic Disturbance Events
concluded at 8 p.m. Eastern, Friday,
November 22, 2019.
The ERO CAP Extension Request Review Process was developed by NERC Compliance Assurance staff and was provided for informational purposes only. It was not part of the material being balloted.
first version of the standard, TPL-007-1,
requires entities to assess the impact to their systems from a defined event
referred to as the “Benchmark GMD Event.” The second version of the standard
adds new Requirements R8, R9, and R10 to require responsible entities to assess
the potential implications of a “Supplemental GMD Event” on their equipment and
systems in accordance with the FERC’s directives in Order No.
830. The third version of the standard adds a Canadian variance for
Canadian Registered Entities to leverage operating experience, observed GMD
effects, and on-going research efforts for defining alternative Benchmark GMD
Events and/or Supplemental GMD Events that appropriately reflect their specific
geographical and geological characteristics Background Information. This project will address the directives issued
by FERC in Order No. 851 to modify Reliability Standard TPL-007-3. FERC
directed NERC to submit modifications to: (1) require the development and
implementation of corrective action plans to mitigate assessed supplemental GMD
event vulnerabilities (P 29); and (2) to replace the corrective action plan
time-extension provision in Requirement R7.4 with a process through which
extensions of time are considered on a case-by-case basis (P 54).
Standard(s) Affected – TPL-007-3
Purpose/Industry NeedThis project will address the directives issued by FERC in Order No. 851 to modify Reliability Standard TPL-007-3.
Subscribe to the Project 2019-01 Modifications to TPL-007-3 Observer Distribution ListSelect "NERC Email Distribution Lists" from the "Services" drop-down menu and specify “Project 2019-01 Modifications to TPL-007-3 Observer List” in the Description Box.
TPL-007-4Clean | Redline to Last Posted Redline to Last Approved
Technical Rationale for TPL-007-4
Implementation Guidance for TPL-007-4
Consideration of Directives
TPL-007-4 CAP Extension Request Review ProcessClean | Redline to Last Posted
11/13/19 - 11/22/19
TPL-007-4Clean | Redline
Unofficial Comment Form (Word)
Draft ERO Process Update
Draft Reliability Standard Audit Worksheet (RSAW) Update
8/30/19 - 9/9/19
Non-Binding Poll Results
7/26/19 - 9/9/19
Consideration of Comments
Join Ballot Pools
7/26/19 - 8/26/19
Drafting Team Nominations
Unofficial Nomination Form
02/25/19 - 03/26/19
Standard Authorization Request
Unofficial Comment Form
02/25/19 - 03/26/19
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This link leads to the machine-readable files that are made available in response to the federal Transparency in Coverage Rule and includes negotiated service rates and out-of-network allowed amounts between health plans and healthcare providers. The machine readable files are formatted to allow researchers, regulators, and application developers to more easily access and analyze data.