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The licensee discovered that the High Pres … The licensee discovered that the High Pressure Coolant Injection (HPCI) system flow control loop was degraded in such a manner that HPCI would not perform its safety function. The HPCI loop flow indicator indicated 200 GPM with no flow in the loop. The specification for that parameter is <100GPM. With the flow indicator in this condition the HPCI flow controller would perform non-conservatively (less flow into the system than was demanded), and would not perform its intended safety function therefore rendering HPCI inoperable.</br>The licensee declared HPCI inoperable and in accordance with Technical Specification 3.5.E.2 entered a 14 day LCO. The licensee has commenced troubleshooting and will initiate repairs as necessary to return the system to operation. </br>The licensee notified the NRC Resident Inspector.</br>* * * RETRACTION ON 03/09/07 AT 1413 EST FROM M. RAMSEY TO MACKINNON * * *</br>BASIS FOR RETRACTION:</br>NRC Event Notification 43113 was conservatively made to ensure that the Eight-Hour Non-Emergency reporting requirements of 10CFR50.73 were met pending the evaluation of an atypical condition observed with the High Pressure Coolant Injection (HPCI) Flow Indicator that was observed by Operators during routine monitoring of plant equipment. After comparing the observed flow indication to allowable values for meter uncertainties, it was determined that the initial NRC Notification was not required. The HPCI system was capable of fulfilling all design safety functions. Additional measures to ensure system reliability were completed that included removing and bench testing the recently refurbished 'square root converter' and calibration verification of involved components. No degraded conditions were discovered.</br>ENS Event Number 43113, made on 01/22/07, is being retracted.</br>R1DO (Neil Perry) notified. </br>The NRC Resident Inspector was notified of this retraction by the licensee. notified of this retraction by the licensee. +
00:00:00, 23 January 2007 +
43,113 +
22:42:00, 22 January 2007 +
00:00:00, 23 January 2007 +
The licensee discovered that the High Pres … The licensee discovered that the High Pressure Coolant Injection (HPCI) system flow control loop was degraded in such a manner that HPCI would not perform its safety function. The HPCI loop flow indicator indicated 200 GPM with no flow in the loop. The specification for that parameter is <100GPM. With the flow indicator in this condition the HPCI flow controller would perform non-conservatively (less flow into the system than was demanded), and would not perform its intended safety function therefore rendering HPCI inoperable.</br>The licensee declared HPCI inoperable and in accordance with Technical Specification 3.5.E.2 entered a 14 day LCO. The licensee has commenced troubleshooting and will initiate repairs as necessary to return the system to operation. </br>The licensee notified the NRC Resident Inspector.</br>* * * RETRACTION ON 03/09/07 AT 1413 EST FROM M. RAMSEY TO MACKINNON * * *</br>BASIS FOR RETRACTION:</br>NRC Event Notification 43113 was conservatively made to ensure that the Eight-Hour Non-Emergency reporting requirements of 10CFR50.73 were met pending the evaluation of an atypical condition observed with the High Pressure Coolant Injection (HPCI) Flow Indicator that was observed by Operators during routine monitoring of plant equipment. After comparing the observed flow indication to allowable values for meter uncertainties, it was determined that the initial NRC Notification was not required. The HPCI system was capable of fulfilling all design safety functions. Additional measures to ensure system reliability were completed that included removing and bench testing the recently refurbished 'square root converter' and calibration verification of involved components. No degraded conditions were discovered.</br>ENS Event Number 43113, made on 01/22/07, is being retracted.</br>R1DO (Neil Perry) notified. </br>The NRC Resident Inspector was notified of this retraction by the licensee. notified of this retraction by the licensee. +
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100 +
00:00:00, 9 March 2007 +
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22:42:00, 22 January 2007 +
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00:00:00, 23 January 2007 +
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