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Due to failure of Service Water from RCP M … Due to failure of Service Water from RCP Motor Air Cooler valve MOV3134 to stroke satisfactorily during scheduled surveillance testing, (the licensee) entered TS 3.6.3 Condition A for Containment Isolation Valves. MOV3134 did not indicate full closed by remote indication in the Control Room when time-stroked at 0119, 8/14/10. Consequently, the isolation valve inside containment, MOV3131, was closed and deenergized to provide containment isolation. This isolated a source of Service Water cooling for containment, and the average temperature of containment started trending up from 117.5F at 0000, 8/14/10. At 1400, 8/14/10, containment average temperature exceeded 120F and entry into TS 3.6.5 Condition A was required. At 2200, 8/14/10, containment average temperature had not been restored to (less than or equal to) 120F, and TS 3.6.5 Condition B was entered. To ensure compliance with TS 3.6.5 Condition B, a ramp down to MODE 3 was initiated at 0045, 8/15/10.</br>At 0057, 8/15/10, the NRC authorized enforcement discretion for Farley Nuclear Plant Unit 1 with regard to LCO 3.6.5 and containment temperature in excess of 120F. The ramp down was halted and power stabilized at 96% Rx power. The enforcement discretion duration is 18 hours starting from 2200, 8/14/10. There were two stipulations on the discretion:</br>1. If the LLRT (Local Leak Rate Test) on MOV3134 fails, a controlled shutdown will be initiated. Time from the enforcement discretion will be used as necessary to achieve a controlled shutdown.</br>2. If containment average temperature exceeds 122F, a controlled shutdown will be initiated. Time from the enforcement discretion will be used as necessary to achieve a controlled shutdown.</br>An update will be sent if a ramp down is recommenced. There is no radiological release in progress.</br>The licensee will notify the NRC Resident Inspector.</br>* * * UPDATE ON 8/15/10 AT 0903 EDT FROM BILL ARENS TO HUFFMAN * * * </br>The LLRT of valve MOV3134 was completed satisfactorily at 0500 CDT on 8/15/10. The valve was declared OPERABLE (but degraded due to the need for additional limit switch and/or torque switch adjustments that do not affect its isolation capability). At 0800 CDT, service water cooling flow was re-established to the RCP Motor Air Coolers. The current containment temperature is 120.4 degrees Fahrenheit. The licensee plans to remain at 96% power until containment temperature drops below 120 degrees.</br>The licensee has notified the NRC Resident Inspector. R2DO (Rudisail) notified.dent Inspector. R2DO (Rudisail) notified.
05:45:00, 15 August 2010 +
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05:45:00, 15 August 2010 +
Due to failure of Service Water from RCP M … Due to failure of Service Water from RCP Motor Air Cooler valve MOV3134 to stroke satisfactorily during scheduled surveillance testing, (the licensee) entered TS 3.6.3 Condition A for Containment Isolation Valves. MOV3134 did not indicate full closed by remote indication in the Control Room when time-stroked at 0119, 8/14/10. Consequently, the isolation valve inside containment, MOV3131, was closed and deenergized to provide containment isolation. This isolated a source of Service Water cooling for containment, and the average temperature of containment started trending up from 117.5F at 0000, 8/14/10. At 1400, 8/14/10, containment average temperature exceeded 120F and entry into TS 3.6.5 Condition A was required. At 2200, 8/14/10, containment average temperature had not been restored to (less than or equal to) 120F, and TS 3.6.5 Condition B was entered. To ensure compliance with TS 3.6.5 Condition B, a ramp down to MODE 3 was initiated at 0045, 8/15/10.</br>At 0057, 8/15/10, the NRC authorized enforcement discretion for Farley Nuclear Plant Unit 1 with regard to LCO 3.6.5 and containment temperature in excess of 120F. The ramp down was halted and power stabilized at 96% Rx power. The enforcement discretion duration is 18 hours starting from 2200, 8/14/10. There were two stipulations on the discretion:</br>1. If the LLRT (Local Leak Rate Test) on MOV3134 fails, a controlled shutdown will be initiated. Time from the enforcement discretion will be used as necessary to achieve a controlled shutdown.</br>2. If containment average temperature exceeds 122F, a controlled shutdown will be initiated. Time from the enforcement discretion will be used as necessary to achieve a controlled shutdown.</br>An update will be sent if a ramp down is recommenced. There is no radiological release in progress.</br>The licensee will notify the NRC Resident Inspector.</br>* * * UPDATE ON 8/15/10 AT 0903 EDT FROM BILL ARENS TO HUFFMAN * * * </br>The LLRT of valve MOV3134 was completed satisfactorily at 0500 CDT on 8/15/10. The valve was declared OPERABLE (but degraded due to the need for additional limit switch and/or torque switch adjustments that do not affect its isolation capability). At 0800 CDT, service water cooling flow was re-established to the RCP Motor Air Coolers. The current containment temperature is 120.4 degrees Fahrenheit. The licensee plans to remain at 96% power until containment temperature drops below 120 degrees.</br>The licensee has notified the NRC Resident Inspector. R2DO (Rudisail) notified.dent Inspector. R2DO (Rudisail) notified.
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