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L-2025-149, Response to Requests for Additional Information Regarding Seabrook License Amendment Requests to Adopt TSTF-505, Revision 2, Provide Risk Informed Extended Completion Time - RITSTF Initiative 4b, and 10 CFR 50.69.
Show incoming properties 
Category
Response to Request for Additional Information (RAI), Technical Specification, Bases Change, Amendment  and Letter type:L
Accession number
ML25251A063  +
Agency
Massachusetts Emergency Management Agency +
Atomic Element
Tin +  and Hydrogen +
CFR
10 CFR 50 +, 10 CFR 50.36 +, 10 CFR 50.69 +, 10 CFR 50.90 +, 10 CFR 50.69#c1 +  and 10 CFR 50.36#c +
Cornerstone
Initiating Events +
Correspondence
L-2025-015 +, L-2025-041, Application to Adopt 10 CFR 50.69, Risk-informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactors +  and L-2025-149, Response to Requests for Additional Information Regarding Seabrook License Amendment Requests to Adopt TSTF-505, Revision 2, Provide Risk Informed Extended Completion Time - RITSTF Initiative 4b, and 10 CFR 50.69. +
Docket
05000443  +  and 00443  +
Document
Regulatory Guide 1.200 +, ML100270582 +, ML061090627 +, ML052910035 +, ML12340A486 +, ML17062A466 +, ML18120A069 +, ML18220B281 +, ML18253A085 +, SBK-L-12242, Enclosure to SBK-L-12242, Seismic Walkdown Report in Response to the 50.54(f) Information Request Regarding Fukushima Near-Term Task Force Recommendation 2.3: Seismic +, ML24031A540 +, L-2025-015, NextEra Energy Seabrook Station, License Amendment Request 25-01, Revise Technical Specifications to Adopt Risk Informed Completion Times TSTF-505, Revision 2, Provide Risk Informed Extended Completion Times - RITSTF Initiative 4b +, L-2025-041, Application to Adopt 10 CFR 50.69, Risk-informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactors +  and ML25219A763 +
EPRI
EPRI +
Equipment trip
Turbine Trip +  and Reactor Trip +
Exelon procedure
EN-AA-105-1000 +, EN-AA-105-1007 +  and OP-AA-110 +
From
Mack K +  and NextEra Energy Seabrook +
General design criterion
GDC 17, Electric power systems +  and GDC 54 +
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>.
L-2025-149, Response to Requests for Additional Information Regarding Seabrook License Amendment Requests to Adopt TSTF-505, Revision 2, Provide Risk Informed Extended Completion Time - RITSTF Initiative 4b, and 10 CFR 50.69. +, L-2025-149, Response to Requests for Additional Information Regarding Seabrook License Amendment Requests to Adopt TSTF-505, Revision 2, Provide Risk Informed Extended Completion Time - RITSTF Initiative 4b, and 10 CFR 50.69. +, L-2025-149, Response to Requests for Additional Information Regarding Seabrook License Amendment Requests to Adopt TSTF-505, Revision 2, Provide Risk Informed Extended Completion Time - RITSTF Initiative 4b, and 10 CFR 50.69. +, L-2025-149, Response to Requests for Additional Information Regarding Seabrook License Amendment Requests to Adopt TSTF-505, Revision 2, Provide Risk Informed Extended Completion Time - RITSTF Initiative 4b, and 10 CFR 50.69. +, L-2025-149, Response to Requests for Additional Information Regarding Seabrook License Amendment Requests to Adopt TSTF-505, Revision 2, Provide Risk Informed Extended Completion Time - RITSTF Initiative 4b, and 10 CFR 50.69. +, L-2025-149, Response to Requests for Additional Information Regarding Seabrook License Amendment Requests to Adopt TSTF-505, Revision 2, Provide Risk Informed Extended Completion Time - RITSTF Initiative 4b, and 10 CFR 50.69. +, L-2025-149, Response to Requests for Additional Information Regarding Seabrook License Amendment Requests to Adopt TSTF-505, Revision 2, Provide Risk Informed Extended Completion Time - RITSTF Initiative 4b, and 10 CFR 50.69. +, L-2025-149, Response to Requests for Additional Information Regarding Seabrook License Amendment Requests to Adopt TSTF-505, Revision 2, Provide Risk Informed Extended Completion Time - RITSTF Initiative 4b, and 10 CFR 50.69. +, L-2025-149, Response to Requests for Additional Information Regarding Seabrook License Amendment Requests to Adopt TSTF-505, Revision 2, Provide Risk Informed Extended Completion Time - RITSTF Initiative 4b, and 10 CFR 50.69. +, L-2025-149, Response to Requests for Additional Information Regarding Seabrook License Amendment Requests to Adopt TSTF-505, Revision 2, Provide Risk Informed Extended Completion Time - RITSTF Initiative 4b, and 10 CFR 50.69. +, L-2025-149, Response to Requests for Additional Information Regarding Seabrook License Amendment Requests to Adopt TSTF-505, Revision 2, Provide Risk Informed Extended Completion Time - RITSTF Initiative 4b, and 10 CFR 50.69. +, L-2025-149, Response to Requests for Additional Information Regarding Seabrook License Amendment Requests to Adopt TSTF-505, Revision 2, Provide Risk Informed Extended Completion Time - RITSTF Initiative 4b, and 10 CFR 50.69. +, L-2025-149, Response to Requests for Additional Information Regarding Seabrook License Amendment Requests to Adopt TSTF-505, Revision 2, Provide Risk Informed Extended Completion Time - RITSTF Initiative 4b, and 10 CFR 50.69. +, L-2025-149, Response to Requests for Additional Information Regarding Seabrook License Amendment Requests to Adopt TSTF-505, Revision 2, Provide Risk Informed Extended Completion Time - RITSTF Initiative 4b, and 10 CFR 50.69. +  and L-2025-149, Response to Requests for Additional Information Regarding Seabrook License Amendment Requests to Adopt TSTF-505, Revision 2, Provide Risk Informed Extended Completion Time - RITSTF Initiative 4b, and 10 CFR 50.69. +
Hours
8.333333e-4 d (0.02 hours, 1.190476e-4 weeks, 2.7396e-5 months)  +, 6.944444e-5 d (0.00167 hours, 9.920635e-6 weeks, 2.283e-6 months)  +, 3.472222e-4 d (0.00833 hours, 4.960317e-5 weeks, 1.1415e-5 months)  +, 2.777778e-4 d (0.00667 hours, 3.968254e-5 weeks, 9.132e-6 months)  +, 4.62963e-5 d (0.00111 hours, 6.613757e-6 weeks, 1.522e-6 months)  +, 1.388889e-4 d (0.00333 hours, 1.984127e-5 weeks, 4.566e-6 months)  +, 1.157407e-5 d (2.777778e-4 hours, 1.653439e-6 weeks, 3.805e-7 months)  +, 5.555556e-4 d (0.0133 hours, 7.936508e-5 weeks, 1.8264e-5 months)  +  and 9.259259e-5 d (0.00222 hours, 1.322751e-5 weeks, 3.044e-6 months)  +
Issue date
September 5, 2025  +
L
L-2025-015 +, L-2025-041, Application to Adopt 10 CFR 50.69, Risk-informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactors +  and L-2025-149, Response to Requests for Additional Information Regarding Seabrook License Amendment Requests to Adopt TSTF-505, Revision 2, Provide Risk Informed Extended Completion Time - RITSTF Initiative 4b, and 10 CFR 50.69. +
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>.
20:11:04, 5 October 2025  +
NEI
NEI 00-04 +, NEI 07-12 +, NEI 05-04 +, NEI 12-13 +, NEI 17-07 +  and NEI 06-09, Risk-Managed Technical Specifications (RMTS) Guidelines +
NUMARC
NUMARC 93-01 +
NUREG
NUREG-1431 +, NUREG-1855, Summary of 7/18/19 Public Meeting with Nuclear Energy Institute to Discuss Application of NUREG-1855, Guidance on the Treatment of Uncertainties Associated with PRAs in Risk-Informed Decision Making +  and NUREG/CR-6850, To Propose an Alternative Methodology to Distribute Transient Ignition Frequencies (Bins 3, 5, 6, 7, 11, 24, 25, 31, 36, 37) That Contains a More Structured Approach to Accounting for Influence Factor Variations within a Pau +
Page count
1  +
Procedure
ES-84 +  and ES-B4 +
Project reference
EPID:L-2025-LLA-0025 +
Project stage
Response to RAI  +
RAS
RAS 2008 +
Regulatory Guide
Regulatory Guide 1.177 +, Regulatory Guide 1.200 +, Regulatory Guide 1.201 +, Regulatory Guide 1.93 +, Regulatory Guide 1.160 +  and Regulatory Guide 1.17 +
Site
Seabrook +
Site license
Seabrook +
Start date
September 5, 2025  +
State
Illinois +, Washington +, New York +  and New Hampshire +
System
Steam Generator +, Feedwater +, Emergency Diesel Generator +, Primary containment +, Main Steam Line +  and Containment Spray +
TS
TS-3.8.1 +, TS-3.7.3 +, TS-3.5.2 +, TS-3.8.3.1 +, TS-3.6.1.3 +, TS-3.6.2.1 +, TS-3.6.3 +, TS-3.8.2 +, TS-3.6.1 +, TS-3.8.1.1 +, TS-3.4.4 +, TS-3.8.2.1 +, TS-5.5.18 +, TS-3.6.1.7 +, TS-3.3.1 +, TS-3.0.6 +, TS-3.6.1.2 +, TS-3.7.4.a +, TS-6.7.6 +  and TS-6.7.6.p +
TSTF
TSTF-505 +  and TSTF-500 +
Title
Response to Requests for Additional Information Regarding Seabrook License Amendment Requests to Adopt TSTF-505, Revision 2, Provide Risk Informed Extended Completion Time - RITSTF Initiative 4b, and 10 CFR 50.69.  +
To
Office of Nuclear Reactor Regulation +  and Document Control Desk +
Topic
Safe Shutdown +, High Radiation Area +, Internal Flooding +, Probabilistic Risk Assessment +, FLEX +, Surveillance Frequency Control Program +, Large early release frequency +, Loss of Offsite Power +, Maintenance Rule Program +  and Offsite Circuit +
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://pbadupws.nrc.gov/docs/ML2525/ML25251A063.pdf  +
Ultimate Heat Sink
Cooling Tower +
 
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