IR 05000316/1977031
| ML20082H077 | |
| Person / Time | |
|---|---|
| Site: | 05000000, Cook |
| Issue date: | 12/08/1977 |
| From: | Kohler J, Little W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML20082H066 | List: |
| References | |
| FOIA-83-384 50-316-77-31, NUDOCS 8312010020 | |
| Download: ML20082H077 (4) | |
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U.S. NUCLEAR REGULATORY C0!-CIISSION W:-
OFFICE OF INSPECTION AND ENFORCEMENT
REGION III
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Report No. 50-316/77-31
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Docket No. 50-316 License No. CPPR-61 Licensee:
American Electric Power Corporation M.
Indiana and Michigan Power Company
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2 Broadway
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New York, NY 10004 f; ' ' *
Facility Name:
Donald C. Cook Nuclear Plant, Unit 2 Inspection At:
Corporate Headquarters, New York, NY Inspection Conducted:
November 21-22, 1977 4t.4L Inspectors:
J. E. Kohler i
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Approved By:
C11ef Nuclear Suppdtt Section
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Inspection Summary
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Inspection on November
_ Areas Inspected:
21-22, 1977 (Report No. 50-316/77-31)
data taken during Unit Preoperational CILRT. Routine, announced inspect
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mai Results:
No items of noncompliance or deviations were The Unit 2 preoperational CILRT in an acceptable test and is cl identified.
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L, 8312010020 830825 i
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DETAILS
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Persons Contacted
- R.11. Baer, Assistant Chief Mechanical Engineer
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- S. J. Miloti, Assistant Division llend nuclear Ener
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- J.
A. Tesero, Assistant Section !! cad Engineering and :tanagem gy, AEPSC Section ent
- G. A. Weber, Performance Engineer I&:1 Cook
- M. J. Trezza, CILRT Cognizant Engineer, AEPSC
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- C. D. Rounds,
- F. X. Walsch, Assistant Engineer, AEPSCInstrument and Control S
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- J. T. Chizmarick, Programmer AEPSC h.
- Denotes those present at management exit on November 21
, 1977 2.
D. C. Cook Unit 2 Preoperational CILRT (October 1977)
The D. C. Cook Unit
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2 CILRT was performed during a 31 hour3.587963e-4 days <br />0.00861 hours <br />5.125661e-5 weeks <br />1.17955e-5 months <br /> period between September 30, 1977 and October 1, 1977.
sumuary describes the results of the leak rate analysisThe following
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AEP Calculated Values (.
0-31.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> 0 to-ti = 30 minutes
- Leakage rate =
.00428 w/o/ day 95% upper confidence level =
.00850 w/o/ day
- Uegative sign denotes leakage out of the containment M
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_ Inspector Calculated Values
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0-31.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> 0 to-ti = 30 minutes
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Leakage rate +.0060 w/o/ day 95% upper confidence level +.0025 w/o/ day
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- Positive sign denotes leakage into containment Acceptance Criteria 0 12.0 psig L
=.25 w/o/ day 73% L
=.1875 w/o/ day a
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Based on the Icak rate calculations performeo by both the i and the licensee, test was below the containmentthe measured leakage rate during the preope nspector Icakage limit Specification for D. C. Cook and 10 CFR 50, Appendix Jspecified in Technical
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Supplemental Test At the conclusion of the CILRT, a supplementary test wa in which an induced Icak rate equivalent s performed (approximately.18 w/o/ day) was superimposed.to approximately 2.77 scfm for eight additional hour; and calculated the following lThe licensee to M
eakage rate:'
Supplementary Test (L1 =.18 w/o/ day)
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AEP 0-8 hours 0 to-ti - 30 min
.19028 w/o/ day inspector 0-8 hours 0 to-ti =.30 min
.1810 w/oday
- Negative sign denotes leakage out of the containment The measured leakage rate for the supplementary test the 25% margin specified in 10 CFR 50, Appendix J and i is within of the 31.5 hour5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> CILRT.
s confirmatory
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_ Containment Volume This uncertainity is the resultThere is some uncertainity in the fr
ainment.
of the ice condenser with the ice loaded.of uncertainties in the free the ice condense volume, AEP used the most In order to calculate puht able on individual ice basket weights.
recent information avail-used by AEP to calculate the free volume of the ice condenserThe follow
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Total weight of ice-
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sample size 2.890 x 10 lbs 144 baskets Distribution
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Normal Mean Weight
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1724 lbs/ basket Standard Deviation 35.4 lbs Weight of Basket 254 lbs 95% confidence level weight 1481/lb/ basket
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Density of ice 56 lbs/ft u
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Ty e C Leakage Penalty,
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The inspector suggested that the licensee revi made to NRR regarding the calculation of a Typ ew recent commitments undrained systems in order to determine the applie C leakage penalty of applying these same commitments to Unit cability or feasibility perform a periodic containment I which is scheduled to quarter of 1978.
integrated Icakage rate test in the first
Data Management Test Performance A$
The inspector stressed the value of automati
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mechanism in order to reduce the amount of data thng the CILRT data in must manually input.
both keying errors and time necessary to makThe purpose of the au at test personnel
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AEP CILRT Program e Icak rate calculations.
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The inspector suggested that any future modifi program incorporate the following features cations to the leak rate
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Leak rate calculations at any interval witho t manipulation.
u external data b.
Deletion of bad or erroneous data from dat a file.
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Automation of data input.
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Instrumentation inspector does notThe licensee used four dewpoint hygrometers f of an instrument failure in a single instrume t dfeel this offers The inspector suggested that additional redundan e event ne compartment. The next containment test.
cy be sr.pplied for the
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Unresolved Items All unresolved items identified in IE Inspecti regarding the preoperational CILRT are consid r d on Report No. 50-316/77-21 ee closed out.
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Management Exit A management exit was conducted at in which the results of the inspectiothe conclusion of the inspection n were summarized.
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