FAC Recommendation Update - NERC Ratings Alert DL/October_… · FAC Recommendation Update . Medium Priority Assessments . Roman Carter, Manager – Reliability Assurance . ... •

FAC Recommendation Update Medium Priority Assessments Roman Carter, Manager – Reliability Assurance October 3, 2012

2 RELIABILITY | ACCOUNTABILITY

Background on Alert:

• A vegetation contact by a Transmission Owner identified actual field conditions that varied significantly from design assumptions – to the point where some facility ratings were considered inaccurate or in question.

• Follow-up resulted in the conclusion that this situation was not restricted to one entity or region.

• As a result, NERC issued an Alert Recommendation to proactively identify other such conditions and promote corrective actions.

FAC Recommendation Background


FAC Alert Milestones: • October 7, 2010 – Original Alert issued

• October 28, 2010 and November 29, 2010 – Informational webinars

• November 30, 2010 – Revised Alert and Gerry Cauley Letter

• January 14, 2011 – Q&A document issued

• April 26, 2011 – Assessment Plan Review Criteria issued

• May 12, 2011 – Webinar: Discussed Assessment Plan Review Criteria and reporting by owners

• June 16, 2011 – Published webinar participant Q&A

FAC Recommendation Update


FAC Alert Milestones: • July 15, 2011 – First “high” priority assessment due date

• September 22, 2011 webinar- results from July 2011 report

• January 15, 2012- Second assessment report on high priority transmission lines submitted by transmission owners.

• March 20, 2012- Update webinar provided to industry for the second “high priority” owner assessments performed.

• October 3, 2012 – First of two medium update webinars provided to Industry.

FAC Recommendation Milestones


High Priority Assessment Responses:

• All High Priority Lines have been assessed

• Approximately 6,900 circuits were assessed

• Approximately 84,000 miles of line were assessed

• Approximately 10,000 discrepancies were discovered

• Approximately 52 percent have been mitigated as of July 17, 2012

Recap of High Priority Assessment



0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

FRCC MRO NPCC RFC SERC SPP TRE WECC

14% 18%

32%

18%

60%

5% 8% 10%

Percent of Assessed Medium Circuits with Discrepancies Through July, 2012



37%

46%

52%

60% 60%

49%

67%

58%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

FRCC MRO NPCC RFC SERC SPP TRE WECC

Percent of Miles Assessed for Medium Priority Lines Through July 2012



Field Inspection 9%

Ground Survey 13%

LiDAR / PLS-CADD 58%

Combination of Methods

20%

Medium: Top Inspection Types



Combination of Remediation Types

56%

Removed Object or Graded

18%

Raised Transmission Structure

17%

Transmission Structure Installed

5%

Derated 4%

Medium: Top 5 Remediation Categories



Complete 38%

In Progress 52%

Not Started 10%

Medium: Remediation Status Breakdown



Clearance to Underbuild

19%

Conductor-Conductor Clearance

4%

Ground / Structure Clearance

72%

Combination of Listed Types

4% Transmission

Crossing 1%

Medium: Top 5 Discrepancy Categories


Medium Assessment Summary

• 83 percent response rate in providing summaries of their first medium priority assessment.

• Approximately 28 percent of the total medium priority transmission circuits were assessed

• Completed assessments account for slightly more than 56 percent of the total of medium priority miles

• Nearly 5,700 discrepancies discovered

• Approximately 38 percent of the registered entities who have assessed their medium transmission facilities have completed their mitigation plans.


Questions

Questions

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