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ENS 46353
Show incoming properties
Category
ENS Notification  and Power Reactor
Atomic Element
Helium +
CFR
10 CFR 72.75(c)(1), ISFSI Defect +, 10 CFR 72.75(c)(2), ISFSI Degradation +, 10 CFR 72.75#c1 +  and 10 CFR 72.75#c2 +
Current power
100  +
Current reactor mode
Power Operation +
Description
On 10/22/10, at 1058 EDT, a troubleshootin … On 10/22/10, at 1058 EDT, a troubleshooting of Independent Spent Fuel Storage Installation (ISFSI) Cask TN-50-A indicated that a leak existed in the cask lid sealing area at a rate greater than allowed by ISFSI Cask Technical Specification (TS) Section 3.1.3, Cask Helium Leak Rate. TS 3.1.3 limits the Cask Helium Leak Rate to 1.0 E-05 ref-cc/sec. The cask is currently in unloading operations and is located within the Peach Bottom Atomic Power Station Unit 3 containment building. Preliminary review indicates that a leak exists at the weld plug that provides sealing of the drilled interseal passageway associated with the drain port penetration of the cask lid. This leak effectively provides a bypass of the main lid outer confinement seal.</br>This report if being submitted pursuant to 10CFR72.75(c)(1) as a result of a material defect in a weld in the cask main lid. This report is also being submitted pursuant to 10CFR72.75 (c) (2) as a result of a resolution in the effectiveness of the cask confinement system.</br>The Certificate of Compliance for this cask is 1027 (Amendment 1).</br>The NRC Resident Inspector has been informed of this notification.</br>* * * UPDATE AT 1515 EDT ON 10/27/10 FROM JEREMY HITE TO DONG PARK * * *</br>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.</br>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.</br>The Certificate of Compliance for this cask is 1027 (Amendment 0).</br>The NRC Resident Inspector has been informed.</br>Notified R1DO (Caruso), NRR EO (Thorp), NMSS EO (Lorson), and IRD (Grant).Thorp), NMSS EO (Lorson), and IRD (Grant).  
Discovered date
14:58:00, 22 October 2010  +
ENS id number
46,353  +
Emergency class
Non Emergency +
Entered date
16:52:00, 22 October 2010  +
Event date
14:58:00, 22 October 2010  +
Event description
On 10/22/10, at 1058 EDT, a troubleshootin … On 10/22/10, at 1058 EDT, a troubleshooting of Independent Spent Fuel Storage Installation (ISFSI) Cask TN-50-A indicated that a leak existed in the cask lid sealing area at a rate greater than allowed by ISFSI Cask Technical Specification (TS) Section 3.1.3, Cask Helium Leak Rate. TS 3.1.3 limits the Cask Helium Leak Rate to 1.0 E-05 ref-cc/sec. The cask is currently in unloading operations and is located within the Peach Bottom Atomic Power Station Unit 3 containment building. Preliminary review indicates that a leak exists at the weld plug that provides sealing of the drilled interseal passageway associated with the drain port penetration of the cask lid. This leak effectively provides a bypass of the main lid outer confinement seal.</br>This report if being submitted pursuant to 10CFR72.75(c)(1) as a result of a material defect in a weld in the cask main lid. This report is also being submitted pursuant to 10CFR72.75 (c) (2) as a result of a resolution in the effectiveness of the cask confinement system.</br>The Certificate of Compliance for this cask is 1027 (Amendment 1).</br>The NRC Resident Inspector has been informed of this notification.</br>* * * UPDATE AT 1515 EDT ON 10/27/10 FROM JEREMY HITE TO DONG PARK * * *</br>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.</br>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.</br>The Certificate of Compliance for this cask is 1027 (Amendment 0).</br>The NRC Resident Inspector has been informed.</br>Notified R1DO (Caruso), NRR EO (Thorp), NMSS EO (Lorson), and IRD (Grant).Thorp), NMSS EO (Lorson), and IRD (Grant).  
Has query"Has query" is a predefined property that represents meta information (in form of a <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Subobject">subobject</a>) about individual queries and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
ENS 46353 +, ENS 46353 +, ENS 46353 +, ENS 46353 +, ENS 46353 +, ENS 46353 +, ENS 46353 +, ENS 46353 +, ENS 46353 +, ENS 46353 +, ENS 46353 +, ENS 46353 +, ENS 46353 +, ENS 46353 +  and ENS 46353 +
Initial power
100  +
Initial reactor mode
Power Operation +
Last update date
00:00:00, 27 October 2010  +
Modification date"Modification date" is a predefined property that corresponds to the date of the last modification of a subject and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
02:12:12, 31 October 2018  +
NRC officer
Eric Simpson +
Notification date
16:52:00, 22 October 2010  +
Originated by
Brad Deihl +
Person
Dong Park +
Reactor critical
true  +
Reactor scram
false  +
Reactor type
GE-4 +
Region
NRC Region 1 +
Reporting criterion
10 CFR 72.75(c)(1), ISFSI Defect +  and 10 CFR 72.75(c)(2), ISFSI Degradation +
Reporting time
0.0792 d (1.9 hours, 0.0113 weeks, 0.0026 months)  +
Site
Peach Bottom +
Start date
14:58:00, 22 October 2010  +
State
Pennsylvania +
TS
TS-3.1.3 +
Title
Spent Fuel Storage Related Defect - Cask Leakage Rate Greater than Technical Specification  +
URL"URL" is a <a href="/Special:Types/URL" title="Special:Types/URL">type</a> and predefined property provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a> to represent URI/URL values.
http://www.nrc.gov/reading-rm/doc-collections/event-status/event/2010/20101028en.html#en46353  +
Unit
2  +  and 3  +
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