ML100541887
| ML100541887 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 02/22/2010 |
| From: | Progress Energy Co |
| To: | Office of Nuclear Reactor Regulation |
| Saba F, NRR/DORL/LPL2-2, 301-415-1447 | |
| Shared Package | |
| ML100541895 | List: |
| References | |
| Download: ML100541887 (2) | |
Text
BNP Tech Specs Chronology
1973 - Original Tech Specs contained no requirements for emergency bus undervoltage protection
1977 - NRC requirement to add degraded voltage relays and to submit Tech Specs for degraded and loss of voltage
1979 - PM 77-327 installed the 27DV relays and provided basis for Tech Spec change to use existing BOP 27 relays for the loss of voltage function
1979 - CP&L submitted Tech Spec change using the BOP 27 relay settings without specifically identifying them as BOP relays 1980 T
h S i
d f l
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l d d BOP l
1980 - Tech Spec issued for loss of voltage included BOP relay settings (did not include relay tag numbers). Communicated the 27/59E functions as: Load sheds all breakers on its associated bus, trips tie breakers and permits closure of EDG breaker 02/22/10 1
BNP Tech Specs Chronology 1982 - CP&L discovered surveillances were not being performed for the Unit 1 degraded voltage relays g
g y
1982 - CP&L requested Tech Spec change to replace the BOP relay settings with the 27/59E relay settings Stated that the wrong relays were referenced in the plant mod and Stated that the wrong relays were referenced in the plant mod and wrong settings incorporated in Tech Specs Communicated the 27/59E functions as: Load sheds all breakers on its associated bus, trips tie breakers and permits closure of EDG breaker 1985 - Tech Spec change request approved 1991 - NRC questioned why the 27HS was not in TS versus 1991 - NRC questioned why the 27HS was not in TS versus 27/59E 27HS although it provides an EDG start initiation signal for power system failures or degraded voltage conditions it is not the actual undervoltage protection device; therefore the 27HS was not required to undervoltage protection device; therefore, the 27HS was not required to be incorporated NRC closed out this Inspector Follow-up Item (IFI) 02/22/10 2