ENS 46373

v t e ENS Event
15:07 Oct 27, 2010
Title	Spent Fuel Storage Related Defect - Cask Leakage Rate Greater than Technical Specification
Event Description	On 10/27/10, at 1107 [EDT], troubleshooting of Independent Spent Fuel Storage Installation (ISFSI) Cask TN-68-01 identified that a helium leak exists in the cask lid sealing area at a leak rate greater than allowed by ISFSI Cask Technical Specification Section 3.1.3, Cask Helium Leak Rate. TS 3.1.3 limits the Cask Helium Leak Rate to 1.0 E-O5 ref-cc/sec. The cask was in LOADING OPERATIONS and is currently located within the [Peach Bottom Atomic Power Station] PBAPS Unit 2 containment building. Preliminary review indicates that a leak exists in the Cask Main Lid Outer Closure Seal. The cask will be repaired and tested prior to returning the cask to the Independent Spent Fuel Storage Installation (ISFSI). No release of radiation occurred as a result of this issue. This report is being submitted pursuant to 10CFR 72.75(c)(2) as a result of a reduction in the effectiveness of the cask confinement system. The Certificate of Compliance for this cask is 1027 (Amendment 0). The NRC Resident Inspector has been informed.

ENS 46373 +/-
Where
Peach Bottom Pennsylvania (NRC Region 1)
Reporting

10 CFR 72.75(c )(2), ISFSI Degradation
Time - Person (Reporting Time:+1.3 h0.0542 days <br />0.00774 weeks <br />0.00178 months <br />)
Opened:	Jeremy Hite 16:25 Oct 27, 2010
NRC Officer:	Dong Park
Last Updated:	Oct 28, 2010
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v • d • e

v t e Emergency Notification System
Peach Bottom with 10 CFR 72.75(c)(2), ISFSI Degradation
WEEKMONTHYEAR2010-10-27T15:07:00 [Table view]
[ENS list for Peach Bottom]

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