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{{Adams
#REDIRECT [[BSEP 16-0067, Technical Specification Bases, Rev 88]]
| number = ML16224A284
| issue date = 08/03/2016
| title = Technical Specification Bases, Rev 88
| author name = Pope A H
| author affiliation = Duke Energy Progress, Inc
| addressee name =
| addressee affiliation = NRC/Document Control Desk, NRC/NRR
| docket = 05000324, 05000325
| license number = DPR-062, DPR-071
| contact person =
| case reference number = BSEP 16-0067
| package number = ML16224A234
| document type = Technical Specification, Bases Change
| page count = 660
}}
 
=Text=
{{#Wiki_filter:Technical Specification Bases Brunswick Steam Electric Plant, Unit No. 2
 
Renewed Facility Operating License DPR-62
 
Revision 88
 
Brunswick Unit 2 LOEP-1 Revision 88 LIST OF EFFECTIVE PAGES - BASES
 
Page No. Revision No. Page No. Revision No.
 
Title Page 88
 
List of Effective Pages - Book 1
 
LOEP-1 88
 
LOEP-2 86
 
LOEP-3 79
 
LOEP-4 78
 
i 62 ii 30
 
B 2.1.1-1 30 B 2.1.1-2 73 B 2.1.1-3 73 B 2.1.1-4 79 B 2.1.2-1 30 B 2.1.2-2 30 B 2.1.2-3 30
 
B 3.0-1 48 B 3.0-2 30 B 3.0-3 30 B 3.0-4 30 B 3.0-5 39 B 3.0-6 39 B 3.0-7 39 B 3.0-8 39 B 3.0-9 39 B 3.0-10 48 B 3.0-11 48 B 3.0-12 48 B 3.0-13 48 B 3.0-14 48 B 3.0-15 48 B 3.0-16 48 B 3.0-17 48 B 3.0-18 48
 
B 3.1.1-1 30 B 3.1.1-2 30 B 3.1.1-3 30 B 3.1.1-4 30 B 3.1.1-5 30 B 3.1.1-6 30 B 3.1.2-1 30 B 3.1.2-2 30 B 3.1.2-3 30 B 3.1.2-4 30 B 3.1.2-5 30 B 3.1.3-1 30 B 3.1.3-2 62 B 3.1.3-3 30 B 3.1.3-4 60 B 3.1.3-5 30 B 3.1.3-6 30 B 3.1.3-7 60 B 3.1.3-8 60 B 3.1.3-9 60 B 3.1.4-1 30 B 3.1.4-2 62 B 3.1.4-3 60 B 3.1.4-4 30 B 3.1.4-5 40 B 3.1.4-6 30 B 3.1.4-7 30 B 3.1.5-1 62 B 3.1.5-2 30 B 3.1.5-3 30 B 3.1.5-4 30 B 3.1.5-5 30 B 3.1.6-1 62 B 3.1.6-2 62 B 3.1.6-3 62 B 3.1.6-4 62 B 3.1.6-5 62 B 3.1.7-1 30 B 3.1.7-2 30 B 3.1.7-3 30 B 3.1.7-4 30 B 3.1.7-5 30 B 3.1.7-6 30 B 3.1.8-1 30 B 3.1.8-2 34 B 3.1.8-3 34 B 3.1.8-4 30 B 3.1.8-5 30
 
  (continued) 
 
Brunswick Unit 2 LOEP-1 Revision 88 LIST OF EFFECTIVE PAGES - BASES
 
Page No. Revision No. Page No. Revision No.
 
Title Page N/A
 
List of Effective Pages - Book 2
 
LOEP-1 88
 
LOEP-2 77
 
LOEP-3 88
 
LOEP-4 82
 
LOEP-5 65
 
i 30 ii 30
 
B 3.4.1-1 30 B 3.4.1-2 79 B 3.4.1-3 79 B 3.4.1-4 62 B 3.4.1-5 79 B 3.4.2-1 30 B 3.4.2-2 30 B 3.4.2-3 30 B 3.4.2-4 30 B 3.4.3-1 72 B 3.4.3-2 30 B 3.4.3-3 30 B 3.4.3-4 56 B 3.4.4-1 30 B 3.4.4-2 30 B 3.4.4-3 30 B 3.4.4-4 30 B 3.4.4-5 30 B 3.4.5-1 75 B 3.4.5-2 75 B 3.4.5-3 75 B 3.4.5-4 75 B 3.4.5-5 75 B 3.4.6-1 39 B 3.4.6-2 39 B 3.4.6-3 39 B 3.4.7-1 30 B 3.4.7-2 30 B 3.4.7-3 39 B 3.4.7-4 39 B 3.4.7-5 39 B 3.4.8-1 30 B 3.4.8-2 30 B 3.4.8-3 30 B 3.4.8-4 30 B 3.4.8-5 30 B 3.4.9-1 30 B 3.4.9-2 35 B 3.4.9-3 35 B 3.4.9-4 30 B 3.4.9-5 35 B 3.4.9-6 35 B 3.4.9-7 30 B 3.4.9-8 87 B 3.4.9-9 35 B 3.4.10-1 62 B 3.4.10-2 30
 
B 3.5.1-1 30 B 3.5.1-2 30 B 3.5.1-3 30 B 3.5.1-4 62 B 3.5.1-5 62 B 3.5.1-6 39 B 3.5.1-7 30 B 3.5.1-8 62 B 3.5.1-9 30 B 3.5.1-10 30 B 3.5.1-11 30 B 3.5.1-12 30 B 3.5.1-13 56 B 3.5.1-14 42 B 3.5.1-15 42 B 3.5.1-16 30 B 3.5.1-17 62 B 3.5.2-1 30 B 3.5.2-2 30 B 3.5.2-3 30 B 3.5.2-4 30 B 3.5.2-5 30 B 3.5.2-6 30 B 3.5.3-1 30 B 3.5.3-2 39
 
  (continued) 
 
Brunswick Unit 2 LOEP-3 Revision 88 LIST OF EFFECTIVE PAGES - BASES (continued)
 
Page No. Revision No. Page No. Revision No.
 
B 3.6.4.3-4 30 B 3.6.4.3-5 30 B 3.6.4.3-6 30
 
B 3.7.1-1 30 B 3.7.1-2 30 B 3.7.1-3 39 B 3.7.1-4 39 B 3.7.1-5 39 B 3.7.2-1 30 B 3.7.2-2 58 B 3.7.2-3 58 B 3.7.2-4 30 B 3.7.2-5 30 B 3.7.2-6 30 B 3.7.2-7 30 B 3.7.2-8 30 B 3.7.2-9 30 B 3.7.2-10 30 B 3.7.2-11 30 B 3.7.2-12 30 B 3.7.2-13 30 B 3.7.2-14 58 B 3.7.3-1 61 B 3.7.3-2 61 B 3.7.3-3 61 B 3.7.3-4 61 B 3.7.3-5 61 B 3.7.3-6 61 B 3.7.3-7 61 B 3.7.3-8 61 B 3.7.4-1 30 B 3.7.4-2 30 B 3.7.4-3 30 B 3.7.4-4 30 B 3.7.4-5 30 B 3.7.5-1 30 B 3.7.5-2 30 B 3.7.5-3 30 B 3.7.6-1 62 B 3.7.6-2 62 B 3.7.6-3 62 B 3.7.6-4 85 B 3.7.7-1 30 B 3.7.7-2 30 B 3.7.7-3 30
 
B 3.8.1-1 30 B 3.8.1-2 78 B 3.8.1-3 83 B 3.8.1-4 83 B 3.8.1-5 81 B 3.8.1-6 68 B 3.8.1-7 81 B 3.8.1-8 30 B 3.8.1-9 30 B 3.8.1-10 30 B 3.8.1-11 83 B 3.8.1-12 83 B 3.8.1-13 83 B 3.8.1-14 83 B 3.8.1-15 83 B 3.8.1-16 30 B 3.8.1-17 30 B 3.8.1-18 30 B 3.8.1-19 30 B 3.8.1-20 88 B 3.8.1-21 30 B 3.8.1-22 30 B 3.8.1-23 30 B 3.8.1-24 30 B 3.8.1-25 30 B 3.8.1-26 30 B 3.8.1-27 30 B 3.8.1-28 46 B 3.8.1-29 46 B 3.8.1-30 30 B 3.8.1-31 30 B 3.8.1-32 30 B 3.8.1-33 33 B 3.8.1-34 30 B 3.8.2-1 30 B 3.8.2-2 30 B 3.8.2-3 84 B 3.8.2-4 84 B 3.8.2-5 30
 
  (continued)
 
RCS P/T Limits B 3.4.9 Brunswick Unit 2 B 3.4.9-8 Revision No. 87 BASES SURVEILLANCE SR  3.4.9.4 and SR  3.4.9.5  (continued)
REQUIREMENTS Performing the Surveillance within 30 minutes before starting the idle
 
recirculation pump provides adequate assurance that the limits will not be
 
exceeded between the time of the Surveillance and the time of the idle
 
pump start.
 
An acceptable means of demonstrating compliance with the differential
 
temperature requirement of SR 3.4.9.4 is to compare the temperature of
 
the reactor coolant in the dome to the bottom head drain temperature.
 
As specified in procedures, an acceptable means of demonstrating
 
compliance with the temperature differential requirement in SR 3.4.9.5 is
 
to compare the temperatures of the operating recirculation loop and the
 
idle loop.
 
SR 3.4.9.4 and SR 3.4.9.5 are modified by a Note that requires the
 
Surveillance to be met only in MODES 1, 2, 3, and 4. In MODE 5, the
 
overall stress on limiting components is lower. Therefore, T limits are not required. The Note also states the SR is only required to be met
 
during recirculation pump startup, since this is when the stresses occur.
 
SR  3.4.9.6, SR  3.4.9.7, and SR  3.4.9.8 Limits on the reactor vessel flange and head flange temperatures are
 
generally bounded by the other P/T limits during system heatup and cooldown. However, operations approaching MODE 4 from MODE 5 and
 
in MODE 4 with RCS temperature less than or equal to certain specified
 
values require assurance that these temperatures meet the LCO limits.
 
The flange temperatures must be verified to be above the limits
 
30 minutes before and while tensioning the vessel head bolting studs to
 
ensure that once the head is tensioned the limits are satisfied. When in
 
MODE 4 with RCS temperature  80 F, 30 minute checks of the flange temperatures are required because of the reduced margin to the limits. 
 
When in MODE 4 with RCS temperature  100 F, monitoring of the flange temperature is required every 12 hours to ensure the temperature is
 
within the specified limits.
 
SR 3.4.9.8 applies only to the reactor vessel flange and head flange
 
temperatures; TS 3.4.9 does not limit the temperature of any other areas
 
of the vessel when RCS temperature is  100 F in MODE 4 or MODE 5, or when defueled.
(continued)
 
AC Sources-Operating B 3.8.1 Brunswick Unit 2 B 3.8.1-20 Revision No. 88 BASES SURVEILLANCE recommendations of Safety Guide 9 (Ref. 5), Regulatory Guide 1.9 REQUIREMENTS (Ref. 11), and Regulatory Guide 1.137 (Ref. 12), as addressed in the (continued) UFSAR.
Where the SRs discussed herein specify voltage and frequency
 
tolerances, the following summary is applicable. The minimum steady
 
state output voltage of 3750 V is derived from the recommendations
 
found in Safety Guide 9 (Ref. 5) and bounds the minimum steady state
 
output voltage criteria of 3698 V associated with the 4.16 kV emergency
 
buses analyzed in the AC Auxiliary Elec trical Distribution System Study.
This value (3698 V) allows for voltage drop to the terminals of 4000 V
 
motors whose minimum operating voltage is specified as 3600 V. It also
 
allows for voltage drops to motors and other equipment down through the
 
480 V level where minimum operating voltage is also usually specified as
 
90% of name plate rating. The specified maximum steady state output
 
voltage of 4300 V ensures the maximum operating voltage at the safety
 
related 480 V substations is no more than the maximum rated steady
 
state voltage criteria for the 480 V motor control centers. The maximum
 
steady state output voltage was determined taking into consideration the
 
voltage drop between the DGs and the 4.16 kV emergency buses and a
 
5% voltage boost at the 480 V substation transformers. This maximum
 
steady state output voltage also ensures that for a lightly loaded
 
distribution system, the voltage at the terminals of 4000 V motors is no
 
more than the maximum rated steady state operating voltage. The
 
specified minimum and maximum frequencies of the DG are 58.8 Hz and
 
61.2 Hz, respectively. These values are equal to +/- 2% of the 60 Hz
 
nominal frequency and are derived from the recommendations found in
 
Safety Guide 9 (Ref. 5).
 
SR  3.8.1.1 This SR ensures proper circuit continuity for the offsite AC electrical
 
power supply to the onsite distribution network and availability of offsite
 
AC electrical power. The breaker alignment verifies that each breaker is
 
in its correct position to ensure that distribution buses and loads are
 
connected to their preferred power source and that appropriate
 
independence of offsite circuits is maintained. The 7 day Frequency is
 
adequate since breaker position is not likely to change without the
 
operator being aware of it and because its status is displayed in the
 
control room.
(continued)}}

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