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Discusses 740905-750124 unplanned gas releases.As of 750227 no corrective action taken.Recommends Div of Reactor Licensing to determine if design deficiency exists & if Tech Spec changes needed.IE to provide addl info.
Accession Number: ML19276H306
Date Released: Friday, November 6, 2020
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- ML19276H305 - Discusses 740905-750124 unplanned gas releases.As of 750227 no corrective action taken.Recommends Div of Reactor Licensing to determine if design deficiency exists & if Tech Spec changes needed.IE to provide addl info. (2 page(s), 3/10/1975)
- ML19276H311 - Forwards Abnormal Occurrence Rept 50-289/74-04 on 750123-24 re unplanned radioactive release caused by inadvertent loss of reclaimed boric acid tank loop seal. (1 page(s), 2/11/1975)
- ML19276H316 - RO 50-289/74-04 on 750123-24:while reactor in hot standby condition,cover gas released to auxiliary bldg ventilation sys.Caused by valve stem leak-off.Possible design defect. Loop seal refilled,RC-V1 shut & RC-V3 backseated. (3 page(s), 2/3/1975)
- ML19276H319 - RO 50-289/74-02,03 & 04 on 741006, & 09-10,respectively: unplanned releases of radioactive matl.Caused by problems w/ reactor coolant waste evaporator.No health threat.Protection requirements upgraded.Final rept 741024. (3 page(s), 10/17/1974)
- ML19276H325 - Forwards addl info re 741024 Nonroutine 10-Day Repts 50-289/74-02,03 & 04 & associated 30-Day Rept. (1 page(s), 11/14/1974)
- ML19276H328 - RO 50-289/74-02,03 & 04 on 741006,08 & 09-10,respectively: unplanned release of radioactive matl.Caused by cracked rupture disc & possible unknown causes.Design mod for loop seals under review. (2 page(s), 11/14/1974)
- ML19276H334 - RO-50-289/74-02,03 & 04 on 741006,08 & 09-10,respectively: exposure of personnel to radioactive gas.Caused by malfunction in auxiliary & fuel handling bldg ventilation sys.No dose in excess of 10CFR20 40-h values. (1 page(s), 11/14/1974)
- ML19276H336 - Forwards Nonroutine 10-Day Rept. (2 page(s), 10/3/1974)
- ML19276H341 - RO 50-289/74-01 on 740905-07:unplanned release of radioactivity.Caused by blown loop seal on miscellanous waste evaporator feed tank,due to design inadequacy.Seal refilled.Loop seal design mod under way. (3 page(s), 10/3/1974)
- ML19276H343 - Forwards Nonroutine 10-Day Repts 50-289/74-02,03 & 04 & associated 30-Day Rept as required by 10CFR20.405(a)(2). (2 page(s), 10/24/1974)
- ML19276H350 - RO 50-289/74-01 on 741006,08 & 09-10:unplanned radioactive releases.Caused by valve leak,faulty installation of loop seal plug,ruptured disc & loose plug.Valve replaced,loop seal plug reinstalled & leaks repaired. (4 page(s), 10/24/1974)
