ML20140D243
| ML20140D243 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 03/17/1986 |
| From: | DUKE POWER CO. |
| To: | |
| Shared Package | |
| ML20140D241 | List: |
| References | |
| TAC-59796, TAC-59797, TAC-60601, TAC-60602, NUDOCS 8603260002 | |
| Download: ML20140D243 (3) | |
Text
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9 CONTAINMENT SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) a.
Three Type A tests (Overall Integrated Containment Leakage Rate) shall be conducted at 40 10 month intervals during shutdown at either Ple,riod.
14.8 psig, or at P, 7.A psig, during each 10 year service The third tekt of each set shall be conducted during the shutdown for the 10 year plant inservice inspection; b.
If any periodic Type A test fails to meet either 0.75 L or 0.75 L the test schedule for subsequent Type A tests shall be feviewed anb, approved by the Commission.
If two consecutive Type A tests fail to meet either 0.75 L or 0.75 L, a Type A test shall be performed at least every 18 months until two consecutive Type A tests meet either 0.75 L resume 8;or0.75L at which time the above test schedule may be t
c.
The accuracy of each Type A test shall be verified by a supplemental test which:
1)
Confirms the accuracy of the Type A test by verifying that the difference between supplemental and Type A test data is within 0.25 L,,
or 0.25 L ;
t 2)
Has a duration sufficient to establish accurately the change in leakage rate between the Type A test and the supplemental test; and 3)
Requires the quantity of gas injected into the containment or bled from the containment during the supplemental test to be equivalent to at least 25% of the total measured leakage at P,,
14.8 psig, or P, 7.4 psig.
g d.
Type B and C tests shall be conducted with gas at P, 14.8 psig, at intervalsnogreaterthan24monthsexceptfortestlinvolving:
1)
Air locks, 2)
Qual ply bellows assemclies on containment penetrations between the containment building and the annulus, and 3)
Purge supply and exhaust isolation valves with resilient material lud seals.
y kc e.
Purge supply and exhaust isolation valves with resilient material seals shall be tested and demonstrated OPERABLE by the requirements of Specification 4.6.19.3 or 4.6.1.9.4, as applicable; f.
The combined bypass leakage rate shall be determined to be less than 0.07 L,for penetrations which are not individually testable; penetra-p/
by applicable Type B and C tests at least once per 24 months e
except tions not individually testable shall be determined to have no detect-able leakage when tested with soap bubbles while the containment is pressurized to P,,14.8 psig, or P, 7.4 psig, during each Type A test; t
DR AmendmentNo.I(Unit 2)
McGUIRE - UNITS 1 and 2 3/4 6-3 AmendmentNo.jH[(Unit 1)
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4)
Type C tests performed on containment penetrations M372, M373 without draining the glycol-water mixture from the seats of their diaphragm valves (NF-228A, NF-233B, and NF-234A), if meeting a zero indicated leakage rate (not including' instrument error) for the diaphragm-valves. These tests may be used in lieu of tests which are otherwise required by-Section II.C.2(a) of 10 CFR 50, Appendix J to use air or nitrogen as the test n:ediuti. The above required test pressure (Pa) and test interval are not changed by this exception.
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CONTAINMENT SYSTEMS j
SURVEILLANCE REQUIREMEN13 (Continued) g.
Air locks shall be tested and demonstrated OPERA 8LE per Specification'4.6.1.3; h.
The space'between each dual ply bellows assembly on containment penetrations between the containment building and the annulus shall be vented to the annulus during Type A tests.
Following completion of each Type A test, the space between each dual ply bellows assembly shall be subjected to a low pressure test at 3-5 psig to verify no detectable leakage or the dual ply bellows assembly shall be subjected to a leak test with the pressure on the containment side of the dual ply bellows assembly at P, 14.8 psig, or P '
t 7.4;psig,toverifytheleakagetobewitRinthelimitsof Specification 4.6.1.2f.;
i.
All test leakage rates shall be calculated using observed data converted to absolute' values.
Error analyses shall be performed to select a balanced Integrated Leakage Measurement System; and
'~
j.
The provisions of Specification 4.0.2 are not applicable.
J e
I McGUIRE - UNITS 1 and 2 3/4 6-4
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