1. International Equipment Reliability Index (I-ERI) Subcommittee Update
International ERWG Subcommittee
April 2015

2. I-ERI Subcommittee Team
James Purss (EDF-Energy UK) Chair
Ted Broadbent - (EDF-Energy UK) Acting Chair / Lead
Patrick Ryckaert (Electrabel - Belgium)
Miroslav Zelenay (ENEL – Slovakia)
Fernando Mirallas (ANAV (Vandellos)
Lubos Cvrcek (CEZ – Czech Republic)
Sheng Zhang (CGN (Suzhou Nuclear Power Research Institute)
Mark White (INPO – USA)
I-ERI Subcommittee Team

3. I-ERI Subcommittee Status @ Oct 14
Reviewed the US ERI Revision 10 (including previous and proposed future revisions)
Discussed as a diverse group, which sub-indicators would be of value for the IERWG to use as an indicator
Put them in Four Categories –
Accept as is (Green)
Accept with minor differences (White)
Accept with major differences and further review (Yellow)
Remove completely (Red)
I-ERI Subcommittee Oct 14

4. US ERI Revision 10 Sub-indicator Review
ERI Sub-Indicators
No.
Data Type
Notes
Forced Loss Rate (INPO Definition – 18/24 month Running Average)
1.1
Lagging
Use WANO Definition of Forced Loss Rate (will include 12 month Fueling Cycles)
Unplanned Power Reductions per 7000 hrs Critical (NRC Indicator)
1.2
Remove – This is a US NRC performance indicator
Quarterly Forced Loss Events
1.3
Keep as is
Unplanned Shutdown LCO Entries (in Last 3 months)
2.1
Only include ≤ 72 LCO entries caused by equipment failures (prev and future ERI rev)
Operator Work Arounds
2.2
Consequential Failure Events (No. Events in Last 3 months)
2.3
Mitigating System Failure Margin (MSPI)
3.1
Use old ERI revision – WANO safety system unavailability indicators
System Health Improvement Effectiveness
3.2
Leading
Review what is best for the IERWG
Corrective Critical Work Backlog (Non-Outage)
4.1
Combine with Deficient, include Outage work?
Deficient Critical Work Backlog (Non-Outage)
4.2
Combine with corrective, include Outage?
Deferral of Critical PM’s (Outage and Non-Outage)
4.3
Timely Completion of PM’s (1st Half of Grace)
4.4
Work Week Scope Survival (Average of Last 3 months)
5.1
Critical Only - combine with schedule completion
Work Week Schedule Completion (Average of Last 3 months)
5.2
Critical Only - combine with scope survival
Long Range Plan Implementation Effectiveness
6.1
Age of Red & Yellow Systems
6.2
Older than a cycle (allow 12 month cycles)
Chemistry Effectiveness
7.1
Use WANO Chemistry Indicator
PM Change Backlog (AP-913 Critical and Non-Critical > 60 Days)
8.1
Use old ERI revision of % of PM Feedback
US ERI Revision 10 Sub-indicator Review

5. Path Forward Agreed @ Oct 14
Share with full IERWG group, subcommittee suggestions and receive feedback
Create a IERWG guidance document for IERWG approval in April Meeting
Pilot the I-ERI to determine were the point thresholds should be to adequately measure, compare performance, and drive equipment reliability improvements
Path Forward Oct 14

6. Progress since Oct 14 meeting
Creation of a draft I-ERI guidance document complete
Sharing of guidance document with sub-committee members for review and approval
Items not completed
Resolution of all sub-measures for inclusion within I-ERI hence document is not ready for approval
Point thresholds have not been adequately trialed to measure, compare performance, and drive equipment reliability improvements
Progress since Oct 14 meeting

7. Adopt phased approach to producing an approved I-ERI measure over the next 12 month period
Phase 1 – focus on established and agreed sub-measures
Forced Loss Rate (WANO definition)
Unplanned Automatic Scrams per 7,000 Hours Critical (WANO UA7)
Unplanned Shutdown LCO Entries ≤ 72 hours (in last 3 months)
Safety System Unavailability (WANO indicator)
Work Week Critical Scope Survival and Completion
Chemistry Performance (WANO CPI)
Phase 2 – focus on sub-measures with minor changes required
Phase 3 – completion of sub-measures with major differences with potential incorporation of INPO ERI revision 11 successes – such as Unmitigated SPVs or Maintenance Rework Index.
Proposed forward path

8. Proposed action timeline
Phase 3
Full Deployment
December 2016
(4.1, 4.2, 5.2, 6.1)
+ 22 points =
100 / 100 points
Sept 16 I-ERWG
Presentation and approval of phase three analysis
Phase 2 results published
Mid-2016
(1.3, 2.2, 2.3, 3.2, 4.3, 4.4, 4.5, 6.2)
+ 45 points =
78 / 100 points
Apr 16 I-ERWG
Presentation and approval of phase two analysis
Phase 1 results published
January 2016
(ERI sub-measures 1.1, 1.2, 2.1, 3.1, 5.1, 7.1)
33 / 100 points
Sept 15 I-ERWG
Presentation and approval of phase one analysis 8
I-ERWG Sub-committee, Nuclear Generation, NOT PROTECTIVELY MARKED

9. Questions?