ML20111B270
| ML20111B270 | |
| Person / Time | |
|---|---|
| Site: | Grand Gulf  |
| Issue date: | 05/08/1996 |
| From: | ENTERGY OPERATIONS, INC. |
| To: | |
| Shared Package | |
| ML20111B265 | List: |
| References | |
| NUDOCS 9605140305 | |
| Download: ML20111B270 (5) | |
Text
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.. to GNRO-96/00051' Markedep Pages To The GGNS Operating License i
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-i 9605140305 960508 PDR ADOCK 05000416 PDR p
7 PCIVs 3.6.1.3 SURVEILLANCE REQUIREMENTS (continued)
SURVEILLANCE FREQUENCY SR 3.6.1.3.3
.------NOTES------------------
1.
Valves and blind flanges in high radiation areas may be verified by use of administrative means.
2.
Not required to be met for PCIVs that are open under administrative controls.
Verify each primary containment isolation Prior to manual valve and blind flange that is entering MODE 2 located inside primary containment, or 3 from drywell, or steam tunnel and is required MODE 4, if not to be closed during accident conditions performed is closed.
within the previous 92 days SR 3.6.1.3.4 Verify the isolation time of each power In accordance operated and each automatic PCIV, except with the MSIVs, is within limits.
Inservice Testing Program SR 3.6.1.3.5
NOTE-------------------
Only required to be met in MODES 1, 2,
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and 3.
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/3,G d Perform leakage rate testing for each 184 ays C primary containment purge valve with resilient seals.
A e wit 92 s aft (continued) j l
GRAND GULF 3.6-15 Amendment No. 120
PCIVs 8 3.6.1.3 BASES ACTIONS D.I. D.2, and D.3 (continued) verification that those isolation devices outside primary containment and potentially capable of being mispositioned are in the correct position. For the isolation devices inside primary containment, the time period specified as
" prior to entering MODE 2 or 3, from MODE 4 if not performed within the previous 92 days" is based on engineering judgment and is considered reasonable in view of administrative controls that will ensure that isolation device misalignment is an unlikely possibility.
For the primary containment purge valve with resilient seal that is isolated in accordance with Required Action D.1, SR 3.6.1.3.5 must be performed at least once every 92 days.
This provides assurance that degradation of the resilient seal is detected and confirms that the leakage rate of the primary containment purge valve doe nerease durino the tjme the_pgnattation is isolated normaTTrequency for j s
G 3.6.LL5,is_ll42daK3TH5e more re EnEe771cFd on a E gTe valve while in this Condition, it is prudent to perform the SR more often. Therefore, a Frequency of once per 92 days was chosen and has been shown acceptable based on operating experience.
E.1 and E.2 If any Required Action and associated Comp 1' tion Time cannot e
be met in MODE 1, 2, or 3, the plant must be brought to a MODE in which the LC0 does not apply. To achieve this status, the plant must be brought to at least MODE 3 within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and to MODE 4 within 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />.
The allowed Completion Times are reasonable, based on operating experience, to reach the required plant conditions from full power conditions in an orderly manner and without challenging plant systems.
F.1 G.I. H.l. and H.2 If any Required Action and associated Completion Time cannot be met, the plant must be placed in a condition in which the LC0 does not apply.
If applicable, CORE ALTERATIONS and movement of irradiated fuel assemblies in the primary and (continued)
GRAND GULF B 3.6-20 Revision No. 0 m
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PCIVs B 3.6.1.3
-BASE 9
- SURVEILLANCE SR 3.6.1.3.5 (continued)
REQUIREMENTS primarycontainmentpurgevalveswithresilientseaIs, ad 1tional leakage rate testing beyond the test requirement of 10 4FR 50, Appendix J (Ref. 3), is required to e sure OPERABILyY. Operating experience has demonstratfd that seal has the potential to degrad n a shorter q this type a(thtan do other seal types.
time period Based this observation, aiWthe importance of maintai i g this b
penetration leak 'tig'ht (due to the direc path between primary containment and the environmen
, a Frequency of 184 days was established. Additiona) y, this SR must be performed within 92 days'N fter ope fng the valve. The 4
92 day Frequency was chose Nrec zing that cycling the valve could introduce additibe seal degradation (beyond that which occurs to a valvejth t has not been opened).
Thus, decreasing the inter 41 (f 184 days) is a prudent measure after a valve h een ope d.
The SR is modified by a Note stating t a the primary I
containment purge ydives are only requir to meet leakage rate testing re ufrements in MODES 1, 2, a 3.
If a LOCA inside primary ontainment occurs in these ES, purge valve leaka must be minimized to ensure offsi'te s
radiologi release is within limits. At other imes when the pur valves are required to be capable of clos g (e.g.
during handling of irradiated fuel), pressuriz tion con rns are not present and the purge valves are not re ired to meet any specific leakage criteria, A
m ir'fu76JY-2 SR 3.6.1.3.6 I
Verifying that the full closure isolation time of each MSIV is within the specified limits is required to demonstrate OPERABILITY.
The full closure isolation time test ensures that the MSIV will isolate in a time period that does not exceed the times assumed in the DBA analyses.
The 3 second time limit is measured from the start of valve motion to complete valve closure. The 5 second time limit is measured from initiation of the actuating signal to complete valve closure. The Frequency of this SR is in accordance with the Inservice Testing Program.
(continued)
GRAND GULF B 3.6-24 Revision No. 1 4
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Insert 3.6-15A note SR 3.0.2 is not app'icable In accordance with 10 CFR 50, Appendix J, as modified by approved exemptions Insert B 3.6-24A The frequency is required by 10 CFR 50, Appendix J, as modified by approved exemptions.
j Thus, SR 3.0.2 (Which allows frequency extensions) does not apply.
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