ML20141N174
| ML20141N174 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 02/27/1986 |
| From: | NRC - COMANCHE PEAK PROJECT (TECHNICAL REVIEW TEAM) |
| To: | |
| Shared Package | |
| ML20141N167 | List: |
| References | |
| PROC-860227, NUDOCS 8603040444 | |
| Download: ML20141N174 (3) | |
Text
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'j COMANCHE PEAK RESPONSE TEAM ACTION PLAN
! SAP III.b
Title:
Containaen; Intugrated Leak Rate Test (CILRT)
Revision No.
4 Reflects Comments Description On Elan Prepared and Recommended by h
- Review Team Leader
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Containment Integrated Leak Rate Test (CILRT)
1.0 DESCRIPTION
OF ISSUE The NRC-TRT described these issues in the CPSES Safety Evaluation Report, Supplement No. 7 at Page J-14 Item 3.2.3, " Findings for Test Program Issues," as follows:
"The Group [TRT] found no safety significence for the allegations in TP Category 3 (Containment Integrated Leak Rate Testing), but concluded that a generic problem could exist because when the CILRT Icakage rate was calculated by a method different from that which was committed to in the FSAR, the FSAR had not been amended to reflect that change. The TRT questioned the TUEC procedure for documenting and identifying FSAR deviations to the NRC. The TRT also questioned that method of calculation, which was not endersed by the NRC.
Additionally, the TRT found that the preoperational CILRT was conducted with thrae isolated electrical penetrations, a condition which did not provide the configuration that the Containment Building would have during normal operation.
These items were considered unresolved on the TRT and were forwarded to the NRC Office of Nuclear Reactor Regulation for s
(
)
action. The latter two have since been resolved to the satisfaction of the NRC as reflected in Item (36) in Section 1.7 of Comanche Peak SSER 6."
2.0 ACTION IDENTIFIED BY NRC The action identified by the NRC-TRT in the CPSES Safety Evaluation Report, Supplement No. 7 at Page J-17, Item 4.2.2, " Containment Integrated Leak Rate Testing," as being necessary to resolve this issue is as follows:
"TUEC has identified deviations from FSAR commitments related to the CILRT. TUEC shall identify all other deviations from FSAR commitments which were not previously identified to NRC."
3.0 EACKGROUND During the NRC-TRY investigation of an allegation concerning the l
conduct of the CILRT, two discrepancies involving test methodology were identified. The two discrepancies were technical in nature and concerned the method of calculation of leakage rate and the containment physical configuration during testing. The NRC-TRT forwarded the technical discrepancies to NRC-NRR for evaluation.
I The two technical issues were resolved and documented by NRC-NRR in
Rsvicient 4
s Pags 2 of 2 4
[N ISAP III.b 3
's (Cont'd)
3.0 BACKGROUND
(Cont'd)
CPSES Safety Evaluation Report, Supplement No. 12 at Page 6-1, Item 6.2.5, " Containment Leakage Testing Program." as follows:
"...By a letter dated December 21, 1984, the applicant informed the staff that the use of the mass-plot method of calculating the containment leakage rate and the isolation of the three electrical penetrations were the only deviations from FSAR commitments; by Amendment 54 the applicant revised FSAR Sections 14.2 and 3.8 to reflect these revised practices.
The staff found these limited deviations acceptable because the effect on the results of the ILRT were negligible.
On the basis of its findings in the above review, the staff concludes that the resolution of the outstanding issues regarding the ILRT methodology is acceptable and Outstanding Issue (36) in Section 1.7 of this aupplement has been resolved."
The NRC-TRT expressed concern that there may be other undocumented testing deviations from FSAR commitmerts. Therefore, NRC-TRT is requiring TUEC to identify any other undocumented testing O
deviations from FSAR commitments and to examine the process by which it provides informacion on FSAR testing deviations to the NRC.
The action identified by the NRC-TRT required to resolve the III.a.1 " Hot Functional Test" issue includes reviews of preoperational test data packages and administrative controls implementing the test program. The specific technical discrepancies for the CILRT have beer. resolved, therefore the CPRT will resolve the NRC-TRT's remaining concerns in conjunction with j
resolution of III.a.1, " Hot Functional Testing."
4.0 CPRT ACTION PLAN Based upon the above information published by the NRC, its concerns with containment leak rate methodology have been r' solved.
e The NRC-TRT concern regarding additional undocumented FSAR testing deviations will be investigated, resolved and reported via Action Plan III.a.1, " Hot Functional Testing."
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