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ENS 52181
Show incoming properties
Category
ENS Notification  and Power Reactor
Agency
Massachusetts Emergency Management Agency +
CFR
10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat +, 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident +, 10 CFR 50.72#b3vD +  and 10 CFR 50.72#b3vB +
Current power
62  +
Current reactor mode
Power Operation +
Description
On Monday, August 15, 2016 at 1552 (EDT), … On Monday, August 15, 2016 at 1552 (EDT), with the reactor at (about) 70 percent core thermal power (CTP), Pilgrim Nuclear Power Station (PNPS) entered a 24-hour shutdown Limiting Condition for Operation Action Statement (LCO-AS) for Salt Service Water (SSW) inlet temperature exceeding the Technical Specification (TS) limit in TS 3.5.B.4. The LCO-AS was subsequently exited at 1651 hours when the temperature of SSW trended to below the TS limit. </br>Under certain design conditions, the SSW system is required to provide cooling water to various heat exchangers such as the Reactor Building Closed Cooling Water (RBCCW) and Turbine Building Closed Cooling Water (TBCCW) systems. When the inlet temperature to these supplied loads exceeds the 75 degrees F limit established in the TS, the SSW system is conservatively declared inoperable until the temperature trends below this value. This condition existed for approximately 60 minutes. </br>The SSW temperature is being closely monitored and trended on a continuous basis. </br>This event has no impact on the health and safety of the public. </br>The licensee has notified the NRC Senior Resident Inspector. </br>This notification is being made in accordance with 10 CFR 50.72(b)(3)(v)(B) and 10 CFR 50.72(b)(3)(v)(D) due to an event or condition that could have prevented fulfillment of a safety function. </br>The licensee will be notifying the Commonwealth of Massachusetts Emergency Management Agency.Massachusetts Emergency Management Agency.  +
Discovered date
19:52:00, 15 August 2016  +
ENS id number
52,181  +
Emergency class
Non Emergency +
Entered date
17:48:00, 15 August 2016  +
Event date
19:52:00, 15 August 2016  +
Event description
On Monday, August 15, 2016 at 1552 (EDT), … On Monday, August 15, 2016 at 1552 (EDT), with the reactor at (about) 70 percent core thermal power (CTP), Pilgrim Nuclear Power Station (PNPS) entered a 24-hour shutdown Limiting Condition for Operation Action Statement (LCO-AS) for Salt Service Water (SSW) inlet temperature exceeding the Technical Specification (TS) limit in TS 3.5.B.4. The LCO-AS was subsequently exited at 1651 hours when the temperature of SSW trended to below the TS limit. </br>Under certain design conditions, the SSW system is required to provide cooling water to various heat exchangers such as the Reactor Building Closed Cooling Water (RBCCW) and Turbine Building Closed Cooling Water (TBCCW) systems. When the inlet temperature to these supplied loads exceeds the 75 degrees F limit established in the TS, the SSW system is conservatively declared inoperable until the temperature trends below this value. This condition existed for approximately 60 minutes. </br>The SSW temperature is being closely monitored and trended on a continuous basis. </br>This event has no impact on the health and safety of the public. </br>The licensee has notified the NRC Senior Resident Inspector. </br>This notification is being made in accordance with 10 CFR 50.72(b)(3)(v)(B) and 10 CFR 50.72(b)(3)(v)(D) due to an event or condition that could have prevented fulfillment of a safety function. </br>The licensee will be notifying the Commonwealth of Massachusetts Emergency Management Agency.Massachusetts Emergency Management Agency.  +
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 52181 +, ENS 52181 +, ENS 52181 +, ENS 52181 +, ENS 52181 +, ENS 52181 +, ENS 52181 +, ENS 52181 +, ENS 52181 +, ENS 52181 +, ENS 52181 +, ENS 52181 +, ENS 52181 +, ENS 52181 +  and ENS 52181 +
Hours
0.0191 d (0.459 hours, 0.00273 weeks, 6.282055e-4 months)  +
Initial power
70  +
Initial reactor mode
Power Operation +
Last update date
00:00:00, 15 August 2016  +
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>.
22:16:16, 24 September 2017  +
NRC officer
Vince Klco +
Notification date
17:48:00, 15 August 2016  +
Originated by
Kenneth Goodall +
Reactor critical
true  +
Reactor scram
false  +
Reactor type
GE-3 +
Region
NRC Region 1 +
Reporting criterion
10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat +  and 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident +
Reporting time
-0.0863 d (-2.07 hours, -0.0123 weeks, -0.00284 months)  +
Site
Pilgrim +
Start date
19:52:00, 15 August 2016  +
State
Massachusetts +
System
Service water +
TS
TS-3.5.B +
Title
Salt Service Water System Declared Inoperable  +
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/2016/20160816en.html#en52181  +
Unit
1  +
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