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On October 5, 2003, Progress Energy Caroli … On October 5, 2003, Progress Energy Carolinas, Inc. (PEC) received notification from GE Nuclear Energy (GENE) of a reportable condition in accordance with 10 CFR 21.21(d) (i.e., SC03-20, "Stability Option III Period Based Detection Algorithm Allowable Settings," dated October 4, 2003). SC03-20 identified the potential for numerous, unexpected confirmation count resets in the event of an instability condition. These confirmation count resets could result in the inoperability of Technical Specification (TS) Table 3.3.1.1-1, "Reactor Protection System Instrumentation," Function 2.f, "OPRM Upscale?' Therefore, at 1100 Eastern Daylight Time (EDT) on October 5, 2003, the Unit I and Unit 2 Oscillation Power Range Monitor (OPRM) channels were declared inoperable in accordance with TS 3.3.1.1, "Reactor Protection System (RPS) Instrumentation," and an alternate method to detect and suppress thermal hydraulic instability oscillations was placed into effect as directed by Condition I of TS 3.3.1.1. PEC is preparing modifications to implement the recommendations of SC03-20 and return the OPRM Upscale function to operable status for both Units. The safety significance of this occurrence is considered minimal.</br></br>The apparent cause of the event is an incomplete analysis, performed by GENE, when establishing the OPRM's period based detection algorithm (PBDA).</br></br>NRC FORM 56617.2001) </br></br>* NUMBER NUMBER Brunswick Steam Electric Plant (BSEP), Unit I 05000325 2oR 4ectric Plant (BSEP), Unit I 05000325 2oR 4 +
October 5, 2003 +
On October 5, 2003, Progress Energy Caroli … On October 5, 2003, Progress Energy Carolinas, Inc. (PEC) received notification from GE Nuclear Energy (GENE) of a reportable condition in accordance with 10 CFR 21.21(d) (i.e., SC03-20, "Stability Option III Period Based Detection Algorithm Allowable Settings," dated October 4, 2003). SC03-20 identified the potential for numerous, unexpected confirmation count resets in the event of an instability condition. These confirmation count resets could result in the inoperability of Technical Specification (TS) Table 3.3.1.1-1, "Reactor Protection System Instrumentation," Function 2.f, "OPRM Upscale?' Therefore, at 1100 Eastern Daylight Time (EDT) on October 5, 2003, the Unit I and Unit 2 Oscillation Power Range Monitor (OPRM) channels were declared inoperable in accordance with TS 3.3.1.1, "Reactor Protection System (RPS) Instrumentation," and an alternate method to detect and suppress thermal hydraulic instability oscillations was placed into effect as directed by Condition I of TS 3.3.1.1. PEC is preparing modifications to implement the recommendations of SC03-20 and return the OPRM Upscale function to operable status for both Units. The safety significance of this occurrence is considered minimal.</br></br>The apparent cause of the event is an incomplete analysis, performed by GENE, when establishing the OPRM's period based detection algorithm (PBDA).</br></br>NRC FORM 56617.2001) </br></br>* NUMBER NUMBER Brunswick Steam Electric Plant (BSEP), Unit I 05000325 2oR 4ectric Plant (BSEP), Unit I 05000325 2oR 4 +
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05:20:52, 1 December 2017 +
November 26, 2003 +
October 5, 2003 +
Oscillation Power Range Monitor (OPRM) Inoperability Due To Inadequate Confirmation Count Performance +
Safe Shutdown + and Power Uprate +
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