ML19345B686
| ML19345B686 | |
| Person / Time | |
|---|---|
| Issue date: | 11/18/1980 |
| From: | NRC COMMISSION (OCM) |
| To: | |
| Shared Package | |
| ML19345B680 | List: |
| References | |
| REF-10CFR9.7 NUDOCS 8012020342 | |
| Download: ML19345B686 (11) | |
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133XE MARCH 28, 1979 RELEASES OF 133XE IN CONTAINMENT ATMOSPHERE 46.5 MCI
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133XE TO ENVIRONMENT
'1.6 MCI TOTAL 48.1 MCI
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INITIAL INVENTORY 151 MCI FRACTION RELEASED 31.9%
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1311 MARCH 28, 1979 RELEASES OF INTO AUXILIARY BUILDING 2,10 MCI (TANKAGE, SUMPS, ETC.)
INTO CONTAINMENT BUILDING SUMP 13.10 MCI INTO PRIMARY COOLANT 2.65 MCI INTO BUILDING ATMOSPHERE
~0.47 MCI TOTAL 18.32 MCI INITIAL INVENTORY 69'4 MCI
~
FRACTION RELEASED 26,'4%
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RELEASES T0 BUILDING ATMOSPHERE 133XE 1311 vs 131 0.47 MCI I
= 0.677% OF INVENTORY 133XE = 30.'8% OF INVENTORY 46.5 MCI
,'. RELEASE OF ~1331 TO ATMOSPHERE WAS FACTOR.0220 BELOW THAT 131 OF XE, IN RELATIVE TERMS.
AN ACCIDENT RELEASING 100%'0F NOBLES SHOULD RELEASE 2.2% OF I, IN WATER-STARVED CONDITIONS.
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RELEASES TO ENVIRONMENT 133Xe TAKE 084 x 1.58 MCI =
1.35 MCI 131I 5.5 CI 10-3 0F 133XE INVENTORY 8 81 x
7.92 x
10-8 0F 1311 INVENTORY
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AN ACCIDENT RELEASING 100% OF NOBLES SHOULD RELEASE 10-5 0F I,
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IN WATER-SATURATED CONDITIONS.
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IODINE INDEX WASH NO SAME, NO CATEGORY 1400 SMOOTHING CHECK VALVE SPECULATIVE
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1 6.30(-7) 5.32(-8) 5.32(-8) 1.17(-9) 2 5.60(-6) 4.69(-6) 1.89(-6) 5.94(-8) 3 8.00(-7) 5.22(-7) 5'. 22 (-7) 5.74(-8) 1.89(-12) 4.62(-13) 4
- 4. 50(-8) 1.89(-12).
5 2.10(-8) 1.46(-9) 1.46(-9) 1.07(-9) 6 4.80(-9) 5.06(-10) 5.06(-10) 5.06(-10) 7 8.00(-10) 6.82(-10) 6.82(-10) 6.82(-10) 8 4.00(-9) 8.00(-11) 8.00(-11) 8.00(-12) 9 4.00(-11) 4.00(-11) 4.'00(-11)
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7,11(-6) 5.26(-6) 2.46(-6) 1.20(-7) e
y BASIS OF CURRENT REGULATORY REQUIREMENTS T
CURRENT REGULATORY REQUIREMENTS ARE INTENTIONALLY CONSERVATIVE, AND INCLUDE OXIDIZING ENVIRONMENTS AS THE WORST CASE, 3
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A POTENTIAL IMPACT OF CHANGF IN IODINE RFIFASE ASSUMPTIONS ON CURRENT REGilLATORY REQUIREMENTS I,
REG, GUIDES SPECIFYING ASSUMPTIONS FOR CALCULATING RADICLOGICAL CONSEQUENCES OF DESIGN BASIS ACCIDENTS II, TMI ACTION PLAN ITEMS RELATED TO RADIATION MONITORING, SAMPLING, SHIELDING, AND RAD 00SE ESTIMATES
- III, DESIGN REQUIREMENTS FOR ENGINEERED SAFETY FEATURES, (E,G. CHARC0AL FILTERS, SPRAY ADDITIVES) t
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I REQUIRED CONDITIONS TO CHANGE-REGULATORY ASSUMPTIONS 1
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VERIFY I0 DINE BEHAVIOR IN' REDUCING ENVIRONMENTS I I '.
VERIFY THAT OXIDIZING ENVIRONMENT CANNOT OCCUR 4
IN LWR ACCIDENTS i
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