ML17290A349
| ML17290A349 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 08/31/2017 |
| From: | Chuck Zoia Operations Branch I |
| To: | Exelon Generation Co |
| References | |
| Download: ML17290A349 (10) | |
Text
NUREG-1021, Rev. 11 Grading Technical Specifications Dresden Exam Experience Chuck Zoia, August 2017
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Overview
- NUREG guidance needed detail
- The "Point Back" practice was discontinued
- Zero (0) to 3 grading adopted
- Competency grading was modified (3 vs. 2 Competencies)
Overview (cont.)
- The initial effort to clarify TS grading guidance was not fully successful based on feedback.
- Comments generated from this effort were used to create ROI 17-13
- Dresden was the first exam that implemented "Rev. 11," and bounded the time to complete the ROI
Example 1
.,.. Competency 6.a - "Recognize"
~ Identify events requiring a TS entry (or not).
~ Maximum 1 point penalty for a single error.
.,.. Dresden Example - 2A Control Rod Drive (CRD) Pump tripped on overcurrent.
~ NO TS entry was needed or expected.
~ The applicant entered TS 3.1.5 Condition C -
"One or more accumulators inoperable with reactor steam dome pressure < 900 psig."
~ The applicant was rated "2" for this competency.
Example 2
.,.. Competency 6.b - "Locate"
~ Identify LCOs requiring entry (or not).
~ One point penalty for each LCO error.
.,.. Dresden Example - Diesel Generator Cooling Water Pump Blown Fuse
.,.. TS LCO 3.7.2, Condition A.1, "One or more DGCW subsystems inoperable." required
.,.. The applicant failed to locate/enter the LCO .
.,.. The applicant was rated "2" for this competency.
Example 3
...,. Competency 6.c - "Compliance"
.,.. Identify LCO Actions requiring entry (or not) .
.,.. One point penalty for each LCO condition or actio statement error.
...,. Dresden Example - Intermediate Range Monitor (IRM) fails upscale with a partial half scram
...,. The applicant was required to ensure compliance \
with TS 3.3.1.1, Condition A , but may refer to Condition C also .
...,. The applicant failed to ensure compliance with TS 3.3.1.1, Condition A, but referred to Condition C .
...,. The applicant was rated "2" for this competency.
Example 4
...,. Competency 6.c - "Compliance" AGAIN!
,... Identify LCO Actions requiring entry (or not).
I
.,.. One point penalty for each LCO condition or actiq statement error.
...,. Dresden Example - Diesel Generator Cooling Water Pump Blown Fuse
...,. Expected entry into TS 3.8.1, Condition B, "One required DG inoperable", including B.1, B.2, B.3.1 or B.3.2 and B.4 .
...,. In addition to another Example 3 (TS 3.3.1.1 Condition A) failure, this applicant failed to ensure compliance with the additional aspects of TS 3.8.1; Conditions B.2, B.3.1 or B.3.2, and B.4 .
...,. The applicant was rated "1" for this competenc ~
Overall 303 Results
- 6. Technical Specifications
- a. Recognize 0.33 2 0.66_ ---i-
- b. Locate 0. 33_ 3 _0.99_ 2.33_
- c. Compliance _0.34_ 2 _0.68_ -~-
- 6. Technical Specifications
- a. Recognize 0.33 3 0.99_
- b. Locate 0.33 2 _0.66_ 2.33 -~-
- c. Compliance _0. 34_ 2 _0.68_ _z_
- 6. Technical Specifications a . Recognize 0.33 3 0.99
- b. Locate 0.33 3 0.99_ 2.32
- c. Compliance 0.34 1 _0.34_ ---i-
Revision 10 Com~arison I
~ Given the same TS deficiencies, the average \
score for these applicants would DECREASE from 2.327 to 2.133 (!)if graded per NUREG-1021, Revision 10 methodology.
~ The differences would be the result of the combined effects of adding the "point back,"
and the competency changes.
~ Individually, the first 2 applicants would be scored 2.0, but the 3rd applicant would get a score of 2.4 due to the "point back."
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~U.S.NRC United St.ates Nuclear Rcgularory Commission NUREG-1021 . Rev. 11 Protecti11g People RRli tlN Environmem Operator Licensing Examination Standards for Power Reactors