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This report Is being made under 50.72(b)(2 … This report Is being made under 50.72(b)(2)(iv)(B) for inserting a manual reactor scram due to high levels of reactor coolant chlorides, sulfates, and conductivity. These elevated chemistry parameters may be due to a possible resin intrusion following the placement of a Condensate Demineralizer in service.</br>In addition, this report is being made under 50.72(b)(3)(iv)(A), 'Any event or condition that results in valid actuation of any systems listed in paragraph (b)(3)(iv)(B) of this section' due to PCIS groups 2, 3, and 4 being received when reactor water level dropped below 170 inches. All isolations went to completion. The reactor water level drop is normal following a scram from 28% power due to void collapse in the reactor vessel. Reactor water level was restored to normal and the PCIS group isolations were reset.</br>The current plan is to cooldown the plant and enter Mode 4.</br>The scram was characterized as uncomplicated. All rods fully inserted. No safety relief valves lifted. Reactor water low level was approximately 165 inches and was restored with normal reactor feedwater. Decay heat is currently being removed via steam line drains. There were no electrical alignment or grid issues as a result of the transient. No significant Technical Specification LCOs were in effect at the time of the scram.</br>The licensee notified the NRC Resident Inspector.ensee notified the NRC Resident Inspector. +
00:40:00, 19 March 2007 +
22:07:00, 18 March 2007 +
00:40:00, 19 March 2007 +
This report Is being made under 50.72(b)(2 … This report Is being made under 50.72(b)(2)(iv)(B) for inserting a manual reactor scram due to high levels of reactor coolant chlorides, sulfates, and conductivity. These elevated chemistry parameters may be due to a possible resin intrusion following the placement of a Condensate Demineralizer in service.</br>In addition, this report is being made under 50.72(b)(3)(iv)(A), 'Any event or condition that results in valid actuation of any systems listed in paragraph (b)(3)(iv)(B) of this section' due to PCIS groups 2, 3, and 4 being received when reactor water level dropped below 170 inches. All isolations went to completion. The reactor water level drop is normal following a scram from 28% power due to void collapse in the reactor vessel. Reactor water level was restored to normal and the PCIS group isolations were reset.</br>The current plan is to cooldown the plant and enter Mode 4.</br>The scram was characterized as uncomplicated. All rods fully inserted. No safety relief valves lifted. Reactor water low level was approximately 165 inches and was restored with normal reactor feedwater. Decay heat is currently being removed via steam line drains. There were no electrical alignment or grid issues as a result of the transient. No significant Technical Specification LCOs were in effect at the time of the scram.</br>The licensee notified the NRC Resident Inspector.ensee notified the NRC Resident Inspector. +
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00:00:00, 18 March 2007 +
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>.
02:17:01, 2 March 2018 +
22:07:00, 18 March 2007 +
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true +
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00:40:00, 19 March 2007 +
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