Project 2015-10 Single Points of Failure TPL-001

Status

The final ballots for TPL-001-5 – Transmission System Planning Performance Requirements and the implementation plan, concluded 8 p.m. Eastern, Monday, October 22, 2018. The voting results can be accessed via the links below. The standard and implementation plan will be submitted to the Board of Trustees for adoption and then filed with the appropriate regulatory authorities.

Background
The SPCS and the SAMS conducted an assessment of protection system single points of failure in response to FERC Order No. 754, including analysis of data from the NERC Section 1600 Request for Data or Information. The assessment confirms the existence of a reliability risk associated with single points of failure in protection systems that warrants further action.

Additionally, the two directives from FERC Order No. 786 (p. 40 and p. 89) and updates to the MOD reference in Requirement R1, Measure M1 and the Violation Severity Levels sections have been added to the scope of the project.

Standard(s) Affected: TPL-001-4 - Transmission System Planning Performance Requirements

Purpose/Industry Need
The proposed standard project will benefit reliability by providing clear, unambiguous and results-based reliability standard requirements to address the assessment’s recommendations for modifying NERC Reliability Standard TPL-001-4 (Transmission System Planning Performance Requirements) identified in the SPCS and SAMS report titled “Order No. 754 Assessment of Protection System Single Points of Failure Based on the Section 1600 Data Request.”

Draft	Actions	Dates	Results	Consideration of Comments
Final Draft TPL-001-5 Clean \| Redline to Last Approved \| Redline to Last Posted Implementation Plan Clean \| Redline Supporting Materials VRF/VSL Justification Mapping Document Technical Rationale	Final Ballots Info Vote	10/11/18 - 10/22/18	Ballot Results TPL-001-5 Implementation Plan
Draft 4 TPL-001-5 Clean \| Redline to Last Approved \| Redline to Last Posted Implementation Plan Clean \| Redline to Last Posted Supporting Materials Unofficial Comment Form (Word) VRF/VSL Justification Mapping Document Technical Rationale Cost Effectiveness Background Draft Reliability Standard Audit Worksheet (RSAW)	Additional Ballots and Non-binding Poll Updated Info Info Vote	09/05/18 - 09/14/18	Ballot Results TPL-001-5 Implementation Plan Non-binding Poll
	Comment Period Info Submit Comments	07/30/18 - 09/14/18	Comments Received	Consideration of Comments
	Send RSAW feedback to: RSAWfeedback@nerc.net	09/13/18		Consideration of Comments
Draft 3 TPL-001-5 Clean \| Redline to Last Approved (Updated 03/08/18) \| Redline to Last Posted Implementation Plan Clean \| Redline to Last Posted Supporting Materials Unofficial Comment Form (Word) VRF/VSL Justification Mapping Document Technical Rationale (Updated 03/08/18) Cost Effectiveness Background (Updated 03/08/18) Draft Reliability Standard Audit Worksheet (RSAW) Clean \| Redline	TPL-001-5 Additional Ballot and Non-binding Poll Implementation Plan Initial Ballot Updated Info Info Vote	04/13/18 - 04/23/18	Ballot Results TPL-001-5 Non-binding Poll Implementation Plan Comments Received
	Comment Period Info Submit Comments	02/23/18 - 04/23/18		Consideration of Comments
	Info Send RSAW feedback to: RSAWfeedback@nerc.net	03/30/18 - 04/23/18		Consideration of Comments
Draft 2 TPL-001-5 Clean \| Redline to Last Approved \| Redline to Last Posted Implementation Plan Clean \| Redline to Last Posted Supporting Materials Unofficial Comment Form (Word) VRF/VSL Justification Mapping Document Technical Rationale Cost Effectiveness Background Draft Reliability Standard Audit Worksheet (RSAW)	Initial Ballot and Non-binding Poll Updated Info Info Vote	10/13/17 - 10/23/17	Ballot Results Non-binding Poll Results	Consideration of Comments
	Comment Period Info Submit Comments	09/08/17 - 10/23/17	Comments Received
	Join Ballot Pools	09/08/2017 - 10/06/17
	Info Send RSAW feedback to: RSAWfeedback@nerc.net	10/13/17 - 10/23/17
Draft 1 TPL-001-5 Clean \| Redline to Last Approved Implementation Plan Supporting Materials Unofficial Comment Form (Word)	Comment Period Info Submit Comments	04/25/17 - 05/24/17	Comments Received	Consideration of Comments
Standard Drafting Team Nominations Supporting Materials Unofficial Nomination Form (Word)	Nomination Period Info	07/22/16 - 08/05/16
The Standards Committee Accepted the Standards Authorization Request on July 20, 2016
Final Standards Authorization Request Clean \| Redline
Standards Authorization Request Supporting Materials Unofficial Comment Form (Word)	Comment Period Info Submit Comments	05/26/16 - 06/24/16	Comments Received	Consideration of Comments
Standards Authorization Request Supporting Materials Unofficial Comment Form (Word) Background Document - Order No. 754 Report	Comment Period Info Submit Comments	11/12/15 - 12/17/15	Comments Received
Drafting Team Nominations Supporting Materials Unofficial Nomination Form (Word)	Nomination Period Info	11/12/15 - 12/01/15
The Standards Committee accepted the Standards Authorization Request on October 29, 2015

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