View source for NL-17-1346, VSP-SNC-HTl-17-041, Edwin I. Hatch Nuclear Plant - Unit 1 Cycle 28 Core Operating Limits Report Version 2.

{{Adams
| number = ML17213A076
| issue date = 07/28/2017
| title = VSP-SNC-HTl-17-041, Edwin I. Hatch Nuclear Plant - Unit 1 Cycle 28 Core Operating Limits Report Version 2.
| author name = 
| author affiliation = Southern Nuclear Operating Co, Inc
| addressee name = 
| addressee affiliation = NRC/NRR
| docket = 05000321
| license number = 
| contact person = 
| case reference number = NL-17-1346
| document report number = VSP-SNC-HTl-17-041
| document type = Fuel Cycle Reload Report
| page count = 46
}}

=Text=
{{#Wiki_filter:Edwin I. Hatch Nuclear Plant - Unit 1 Unit 1 Cycle 28 Core Operating Limits Report Version 2 Enclosure 2 Unit 1 Cycle 28 Core Operating Limits Report NON-PROPRIETARY INFORMATION

ENCLOSURE2 VSP-SNC-HTl-17-041 Edwin I. Hatch Nuclear Plant Unit 1 Cycle 28 Core Operating Limits Report, Version 2 Non-Proprietary Information INFORMATION NOTICE This is a non-proprietary version of Enclosure 1 of VSP-SNC-HTl-17-041, which has the proprietary information removed. Portions of the document that have been removed are indicated by white space inside open and closed bracket as shown here (( )).

                  **-:-,I SOUTHERN NUCLEAR OPERATING COMPANY EDWIN I. HATCH NUCLEAR PLANT Unit 1 Cycle 28 CORE OPERATING LIMITS REPORT Version 2 Southern Nuclear Operating Company Post Office Box 1295 Birmingham, Alabama 35242 Non-Proprietary Information

Non-Proprietary Information

Plant Hatch                                                   . Cwe Operating.
. Unit 1 Cycle 28                                                                                -*#.. '
                           *Non-Proprietary Information           ' Limits Report Edwin I. Hatch Nuclear Plant Unit 1 Cycle 28 Core Operating Limits Report TABLE OF CONTENTS Section Title                                               Page 1.0   Introduction                                           1
                                                        ?
2.0                                          '*
APLHGR Limits                                         3 3.0    MCPR Operating Limits                                 7
                                                                          . **-~.-..-,"""""." ..
4.0    LHGR Limits                                          25 5.0    Operating Pressure Limits                            33 6.0    PBDA Amplitude Setpoint                              37 7.0    References                                           38 Version 2

                                            ~ *..-..~ .. *~~~~:~~::*
Plant Hatch                                                            Core Operating Unit 1 Cycle 28             Non-Proprieta,.Y Information                _ Limits Report TABLES Table No. Title                                                Page              *,
1-1     Main Turbine Bypass System Operability                     1 1-2     Equipment-Out-of-Service Limitations                      2 3-1     Exposure Definitions                                      9 3-2     Power-Dependent MCPR Operating Flexibility             10 Options 3-3     Power-Dependent Multiplier Flexibility Options        10 3-4     Rated-Power MCPR Operating Flexibility Options        11 4-1     LHGR Limits versus Peak Pellet Exposure               26 4-2     Flow-Dependent LHGR Operating Flexibility             26 Options 5-1     Pressure Dependent Operating Flexibility Options      34 5-2     Maximum Thermal Limit Ratios for Equipment In         35 Service Operation 5-3     Maximum Thermal Limit Ratios for EOC-RPT Out          35 of Service Operation 6-1     Licensed OPRM Setpoints                               37 ii                               Version 2

Plant Hatch                                                    Core Operating Unit f Cycle 28            ** ** Non-Proprietary Information      Limits Report FIGURES Figure No. Title                                        Page 2-1A      GE14C Flow-Dependent APLHGR                      4 Multiplier (MAPFACF) versus Core Flow 2-18      GNF2 Flow-Dependent APLHGR Multiplier            5 (MAPFACF) versus Core Flow 2-2      APLHGR Limit versus Average Planar               6 Exposure 3-1     Flow-Dependent MCPR Limit (MCPRF)              12 versus Core Flow 3-2A     Power-Dependent MCPR Limit (MCPRp)             13 versus Core Power from 24% to 45% of Rated Core Power 3-28     Power-Dependent MCPR Limit (MCPRp)             14 versus Core Power from 24% to 45% of Rated Core Power (Main Turbine Bypass System Inoperable and/or Main Turbine Pressure Regulator System Status in TLCO 3.3.13.c) 3-3A     Power-Dependent MCPR Multiplier (KP)            15 versus Core Power 3-38     Power-Dependent MCPR Multiplier (Kp)           16 versus Core Power (Main Turbine Pressure Regulator System Status in TLCO 3.3.13.c) 3-4A-1    TLO MCPR Limits versus Average SCRAM           17 Time 3-4A-2    TLO MCPR Limits versus Average SCRAM           18 Time (EOC-RPT Out of Service) 3-4A-3    TLO MCPR Limits versus Average SCRAM           19 Time (Main Turbine Bypass System Inoperable) iii                  Version 2

'-'. ~::.
          *~~ .. ~* .- .:-~-.:T* ....
Plant Hatch                                                    Core Operating unit 1: Cycle 28              Non-Proprietary Information ~-      Limits Report Figure No. Title                                        Page 3-4A-4     TLO MCPR Limits versus Average SCRAM           20 Time (EOC-RPT Out of Service and Main Turbine Bypass System Inoperable) 3-48-1     SLO MCPR Limits versus Average SCRAM           21 Time 3-48-2     SLO MCPR Limits versus Average SCRAM           22 Time (EOC-RPT Out of Service) 3-48-3     SLO MCPR Limits versus Average SCRAM          23 Time (Main Turbine Bypass System
                                                       *Inoperable) 3-48-4     SLO MCPR Limits versus Average SCRAM          24 Time (EOC-RPT Out of Service and Main Turbine Bypass System Inoperable) 4-1A     GE14C Flow-Dependent LHGR Multiplier           27 (LHGRFACF) versus Core Flow 4-18     GNF2 Flow-Dependent LHGR Multiplier            28 (LHGRFACF) versus Core Flow 4-1C      GNF2 Flow-Dependent LHGR Multiplier            29 (LHGRFACF) versus Core Flow (Main Turbine Bypass System Inoperable) 4-2      Power-Dependent LHGR Multiplier                30 (LHGRFACp) versus Core Power 4-3A      GE14C LHGR versus Peak Pellet                  31 Exposure 4-38      GNF2 LHGR versus Peak Pellet Exposure          32 5-1     Licensed Regions of Operating Dome              36 Pressure versus Core Power iv                       Version 2

Plant Hatch                                                                         Core Operating  ..
Unit 1 Cycle 28                       Non-Proprietary Information                     Limits Report

==1.0     INTRODUCTION==

The Core Operating Limits Report (COLR) for Plant Hatch Unit 1 Cycle 28 is prepared in accordance with the requirements of Technical Specification 5.6.5. The core operating limits presented herein were developed using NRG-approved methods (References 1 through 6). Results from the reload analyses for the fuel in Unit 1 Cycle 28 are documented in References 2 through 4.
The following core operating limits are included in this report:
: a. Average Planar Linear Heat Generation Rate (APLHGR) - Technical Speeification 3.2.1
: b. Minimum Critical Power Ratio (MCPR) - Technical Specification 3.2.2
: c. Linear Heat Generation Rate (LHGR) - Technical Specification 3.2.3 This report includes reduced thermal limit ratios which may be used in conjunction with the standard core operating limits to allow operation with dome pressure down to 40 psi below nominal. Also included in this report are the licensed scram setpoints for the Period Based Detection Algorithm (PBDA) in the Oscillation Power Range Monitor (OPRM).
Based upon the reload analysis for this cycle, the following operability requirement is defined for Unit 1 operation.
TABLE 1-1 Main Turbine Bypass System Operability System ... .      *.'                    : OperabilltY Requirement . .*
Main Turbine Bypass System Operable At least two bypass valves must be operable (Technical Specification 3.7.7) 1                                    Version 2

Plant Hatch                                                                                    Gore Operating Unit 1 Cycle 28                      Non-Proprietwy Information                                  Limits Report From a fuel thermal limits perspective, the following limitations are placed on Unit 1 operation.
TABLE 1-2 Equipment-Out-of-Service Limitations Equipment / Condition                                            Limitation
* CTP must be s; 2000 MWth Single-Loop Operation (SLO)
* Core Flow must be s; 56% of Rated OPRM System Inoperable OR Dome Pressure must be within Main Turbine Bypass System Inoperable
                                                              +/- 1O psi of nominal, as defined in OR                              Figure 5-1 Main Turbine Pressure Regulator System Status in TLCO 3.3.13.c 2                                                Version 2

Plant Hatch                                                                       Core Operating Unit 1 Cycle 28                    NOn-Proprietary Information                       Limits* Report
. ~~*
2.0    APLHGR LIMITS (Technical Specification 3.2.1)
For both two loop operation (TLO) and single loop operation (SLO), the APLHGR limit for each six inch axial segment of each fuel assembly in the core is the applicable fuel-type-specific APLHGR limit in Figure 2-2 multiplied by the fuel-type-specific flow-dependent multiplier, MAPFACF, taken from either:
: a. Figure 2-1A for GE14C fuel
: b. Figure 2-1 B forGNF2 fuel.
3                                    Version 2

                                                                                                                                          *,'1; Plant Hatch                                                                                                         Core Operating Unit 1 Cycle 28                                   Non-Proprietary Information                                          Limits Report 1 . 0 + - - - - + - - - - + - - - - t t - - - - - - -.....- - - - - -.....------..-------....- - - -......
    '"ii:
0
    ~
    ~     D.9 - - - + - - 1 TLC t - - + - - - - - - + - ' - " - - - - + - - - - - - + - - - - - - + - - - - - - r - - - - - - - 1
    ~ 0.86 1--------+-------+-------...
ii
    ~ o.a-t-------T-------T-------Tt-,-----;--------r:~~~-r-------t-------1
::!:                                                                                    SLO a::
    ~
    ~ 0.7+----+--~-+----+r-----+--~~+-~~-+--~-+-~~--1 Q)
    "C c:
      ~0.6+-~~~-~~~-~~~--~~~-~~~-~-~-~---r-------1
    ~
      ~0
    ~ 0.5+--~-+----+----+T----+----+----+-----r-------1 0.4+----+----+----++----+----+-----r-----r-------1 30              40          50             5061            70             BO            . 90            100             110 Core Flow(% of Rated)
Operating Conditions F          SLO/TLO            MAPFACi:
30:;; F:;; 61        TLO                0.86 61 < F             TLO                1.00 30:;; F           SLO                0.80 F = Percent of Rated  Core Flow FIGURE 2-1A GE14C Flow-Dependent APLHGR Multiplier (MAPFACF) versus Core Flow 4                                                  Version 2

Plant Hatch                                                                             Core Operating Unit 1 Cycle 28                            Non-Proprietary Information                      Limits Report 1.o...,..______,._______...,..______...,..______...,..______...,..______,._______,._____----4
 '"i!
(.)
 ~
 ~ 0.9+-~~~+-~~~+-~~~+-~~~+-~~~+-~~~+-~~~+-~~---1
 ;&sect;.
ii
 ~ o.a-i--------T-------;-------;-------;-------~~~~T-------T-------1
 ~                                                                        SLO 0:::
 ~
 ~ 0.?+-~~~+-~~~+-~~~+-~~~+-~~~+-~~~+-~~~+-~~---1
 <C cQI "C
c:
  ~0.6+-~~~+-~~~+-~~~+-~~~+-~~~+-~~~+-~~~+-~~---1 21
  ~
0
 ~ 0.5+-~~~+-~-'-~+-~~~~~~~~~~~+-~~~~~~~+-~~---1 0.4+-~~~+-~~~~~~~~~~~~~~~+-~~~+-~~~+-~~---1 30            40          50        60           70           80     90        100             110 Core Flow (%of Rated)
Operating Conditions F         SLO/TLO        MAPFACi:
30 :SF           TLO           1.00 30 :SF          SLO            0.80 F = Percent of Rated Core Flow FIGURE 2-18 GNF2 Flow-Dependent APLHGR Multiplier (MAPFACF) versus Core Flow 5                                 Version 2

                                                                                                        . . *. -: ~* _._
                                                                                                                                   ... *~ "' .":
Plant Hatch                                                                                         Core Operating Unit 1 Cycle 28                         Non-Proprietary Information                                     Limits Report 14.0 Average    GE14C                                             I         I
                                                          ' ~""
GNF2 Planar   APLHGR           13.0 Exposure     Limit (GWd/Sl)    (kW/ft) 12.0 I GE14C  I                  ~
0.00      12.82 14.51 19.13 12.82 12.82 11.0
                                                                    "" ~
57.61 63.50 Average Planar Exposure 8.00 5.00 GNF2 APLHGR Limit g
3:
                         ~
E
:J a:::
                         ~
_J 10.0
                              . 9.0 8.0
                                                                                     ~
                                                                                          ~
                                                                                             ~
                                                                                                ~ '-
a.
(GWd/Sl)    (kW/ft)    <(
                                                                                                    ~'\
0.00      13.78            7.0 17.15      13.78                                                                                           ~
60.78 63.50 6.87 5.50 6.0 5.0
                                                                                                               '       l
                                                                                                                        \
4.0 a.a   5.o 10.0   15.o  20.0   25.o 3o.o 35.o 40.o   45.0  so.a 55.o     so.a         65.o 7o.o Average Planar Exposure (GWd/ST)
FIGURE 2-2 APLHGR Limit versus Average Planar Exposure 6                                               Version 2

Plant Hatch                                                                          Core Operating Unit 1 Cycle 28                          Non-Proprietary Information                   Limits Re"port 3.0     MCPR OPERATING LIMITS (Technical Specification 3.2.2)
The MCPR operating limits (OLMCPR) for each fuel type are a function of core power, core flow, average scram time, number of operating recirculation loops, EOC-RPT system status, operability of the main turbine bypass system, the status of the main turbine pressure regulator system, and cycle exposure. Cycle exposures are defined in Table 3-1.
The OLMCPRs for both two loop operation (TLO) and single loop operation (SLO) are determined as follows:
          ... a.-** For 24% ~*power   < 45%, the greater of either: .      .:** -
: 1) The flow-dependent MCPR limit, MCPRF, as determined by Figure 3-1,
: 2) The power-dependent MCPR limit, MCPRp, as determined by Table 3-2.
: b. For power;::: 45%, the greater of either:
: 1) MCPRF, as determined by Figure 3-1,
: 2) The product of the power-dependent multiplier, Kp, as determined by Table 3-3, and the rated-power OLMCPR, as determined by Table 3-4.
These limits apply to all modes of operation with feedwater temperature reduction, as well as operation with normal feedwater temperatures.
These limits apply to operation with vessel dome pressure within +/- 10 psi of nominal pressure, as defined by the Region I pressure band shown in Figure 5-1. With all equipment in service or with the EOC-RPT system out of service, operation with vessel dome pressure down to 40 psi below nominal is licensed provided the additional restrictions identified in Section 5.0 are applied with the MCPR operating limit defined in this section.
7                                  Version 2

Plant Hatch                                                                                                                                        Core Operating Unit 1 Cycle 28                                Non-Proprietary Information                                                                           Limits Report In the 3-4A and 3-48 figures, Option A scram time OLMCPRs correspond to                                                                       -r; = 1.0, where   -r;   is determined from scram time measurements performed in accordance with Technical Specifications Surveillance Requirements 3.1.4.1 and 3.1.4.2. Option 8 values correspond to         -r; =0.0. For scram times between Option A and Option 8, the rated-power OLMCPR corresponds to"* If -r; has not been determined, Option A limits must be used.
The average scram time of the control rods,                   -r;,     is defined as:
                                        'tave - 1:9
                 -r;     = 0, OR                      , whichever is greater.
: ... :..~ ' .. .: **.~* :. ; . '.. . :: : . :*: ;:'.:".: :'. ' .. ; . ,."''" "* .
where:   -r;A     = 1.08 sec (Technical Specification 3.1.4, Table 3.1.4-1, scram time limit to notch 36) ..
1/2 Ni
                         = &#xb5; + 1 .65
* cr
* where: &#xb5;          = 0.822 sec (mean scram time used in the transient analysis).
cr       = 0.018 sec (standard deviation of&#xb5;).
N1       = total number of active rods measured in Technical Specifications Surveillance Requirement 3.1.4.1.
n        = number of surveillance tests performed to date in the cycle.
N;       = number of active control rods measured in the i1h surveillance test.
               'tave
                         =  i=l where:  'ti       = average scram time to notch 36 of all rods in the i1h surveillance test.
8                                                                                        Version 2

Plant Hatch                                                                 Core Operating Unit 1 Cycle 28             Non-Proprietary Information                       Limits Report TABLE 3-1 Exposure Definitions
         *Ex.posure Label      *
* 9Y<:le Exposur,e . .  .      .. Definition           *.
BOC      Beginning of Cycle Exposure                  0 MWd/ST First Middle of Cycle MOC1                                           EOR - 6283 MWd/ST Exposure
                           . Seconc:f.J\/1.!~dle qfCycl~
...  . .   '**" .MOC2                -* Exposure                EOR - 4283 MWd/ST Projected end of rated power with all control rods out at rated EOR         End of Rated Exposure core flow and rated feedwater temperature EOC          End of Cycle Exposure          Exposure at cycle shutdown 9                                  Version 2

Plant Hatch                                                                                                     Core Operating Unit 1 Cycle 28                                                    Non-Proprietary Information                   Limits Report TABLE 3-2 Power-Dependent MCPR Operating Flexibility Options MCPRp from,~ 24% to < 45% Power                            _,
Equipment In or Out of Service EOC-RPT System                Main Turbine Bypass                              Main Turbine Pressure           Figure#
In Service                   System Operable*                             ReQulator System Status Yes/No                                          Yes                        TLCO 3.3.13.a or b              3-2A Yes/No                                            No                       TLCO 3.3.13.a orb               3-2B Yes/No                                   Yes/No                                TLCO 3.3.13.c               3-2B
'* '.r ~*: ' ****** '," '"* ' *                         .. '***--*,,*-**** .:..- .... _: ___*...*..-. -*            . ; _,_,*_
TABLE 3-3 Power-Dependent Multiplier Flexibility Options
                                                                                          , Kpfor Powe~~;45%
                                                                                                  '          0 ot Rat~d-- _--
Equipment In or Out of Service EOC-RPT System                Main Turbine Bypass                              Main Turbine Pressure           Figure#
In Service                   System Operable*                             Regulator System Status Yes/No                                    Yes/No                           TLCO 3.3.13.a or b              3-3A Yes/No                                    Yes/No                                TLCO 3.3.13.c              3-3B
                                 *At least two bypass valves must be operable 10                                 Version 2

                                                                                                                        .._.t--*.. -..
Plant Hatch                                                                                       Core Operating
.. Unit 1 Cycle 213                  Non-Proprietary Information                                       Limits Report TABLE 3-4 Rated-Power MCPR Operating Flexibility Options
                                       .Rated~power OLMCPRs                                                     '.
Equipment                              TLO                                          SLO In/Out of Service Equipment In Service                 Figure 3-4A-1                                  Figure 3-4B-1
   ; . : , EQC-RPT Out of Service ..      "***** ,:Figur,e~.3-:4A:2 . ,*, ~**"*' .. . "*"'
                                                                                           . . . figure 3~4B:-2     ...
Main Turbine Bypass System Figure 3-4A-3                                  Figure 3-4B-3 Inoperable EOC-RPT Out of Service
            & Main Turbine Bypass                 Figure 3-4A-4                                  Figure 3-4B-4 System Inoperable Main Turbine Pressure Regulator System Status in               Figure 3-4A-1                                  Figure 3-4B-1 TLCO 3.3.13.c Main Turbine Pressure Regulator System Status in Figure 3-4A-2                                  Figure 3-4B-2 TLCO 3.3.13.c
         & EOC-RPT Out of Service Main Turbine Pressure Regulator System Status in TLCO 3.3.13.c                     Figure 3-4A-3                                  Figure 3-4B-3
            & Main Turbine Bypass System Inoperable Main Turbine Pressure Regulator System Status in TLCO 3.3.13.c Figure 3-4A-4                                  Figure 3-4B-4
         & EOC-RPT Out of Service
            & Main Turbine Bypass System Inoperable 11                                               Version 2

Plant Hatch                                                                                                    Core Operating Unit 1 Cycle 28                               Non-Proprietary Information                                          Limits Report 1.5 Ci c..
0
               ~
               ~
E
:J 1.4 a::
                                                          "'*****~
c..
0
,,.,,._ .. c:
              *e11                                                                                                             .. :~-/ ,::
               "C c:
Cll  1.3
                                                                                  ""-i'-_
c.
               ~
                ~
0 ii:                                                                                 ....._.._.....................................i 1.2 + - - - - - + - - - - - + - - - - _ _ , r - - - - - - t - - - - - + - - - - - + - - - - - + - - - - - 1 1.1.._----l----+-------lf------1----+-----1------1------1 30              40        50        60            70              80           90                 100                 110 Core Flow(% of Rated)
MCPRF{TLO) =A+ B*F MCPRF{SLO)        =MCPRF{TLO) + 0.03 Flow            A             B 30::; F < 80      1.7294       -0.00598 80::; F < 90      1.4830       -0.00290 90::; F       1.2220        0.00000 F = Percent of Rated Core Flow FIGURE 3-1 Flow-Dependent MCPR Limit (MCPRF) versus Core Flow 12                                                    Version 2

Plant Hatch                                                                           Core Operati,ng Unit 1 Cycle 28                          Non-Proprietary Information                    Limits Report
* 1.6+-~~~-+~-'-~~+-~~~-+~~~~+-~~~-+~~~~+-~~~----1 24            27   28         30         33             36              39   42          45 Core Power(o/oofRated)
MCPRp(TLO) =A+ B*P MCPRp(SLO)        = MCPRp(TLO) + 0.03 F                 p            A               B F:;:; 60      24:;:; p < 28     2.1900          0.00000 F > 60        24:;:; p < 28     3.3900         -0.03000 All         28:;:; p < 45     2.6671         -0.01882 P = Percent of Rated Core Power F = Percent of Rated Core Flow FIGURE 3-2A Power-Dependent MCPR Limit (MCPRp) versus Core Power
                                 .from 24% to 45% of Rated Core Power 13                                 Version 2

Plant Hatch                                                                Core Operating
* Unit 1 Cycle 28                          Non-Proprietary Information         Limits Report 2.8 -.-------...-----.-------...-----.-----~----~---~
1.6+----,--r-~--+-----r----,-+---,---+----,--+---,--,---t 24            27   28        30          33            36    39  42         45 Core Power("loofRated)
MCPRp(TLO) =A+ B*P MCPRp(SLO)        =MCPRp(TLO) + 0.03 F                p             A               B F:;; 60       24:;; p < 28     3.1000         -0.03250 F > 60        24:;; p < 28     3.3900         -0.03000 All         28:;; p < 45     2.6671         -0.01882 P = Percent of Rated Core Power F = Percent of Rated Core Flow FIGURE 3-28 Power-Dependent MCPR Limit (MCPRp) versus Core Power from 24% to 45% of Rated Core Power (Main Turbine Bypass System Inoperable and/or Main Turbine Pressure Regulator System Status in TLCO 3.3.13.c) 14                       Version 2

Plant Hatch                                                                    Core Operating Unit 1 Cycle 28                        Non-Proprietary Information               Limits Report
    ~
Q)
    &deg;6.1.2+-~~+-~-...o+-~~+-~~---~~---~~-+-~~-+-~~-+-~~-+-~~-1-~~~
E
:::l a::
e;
  " c:.
Q)
    ~
Q) c.
    ~ 1.1 t-~~+-~~+-~~-+-~~-+-~~-+-----'""""'d-~~--1-~~--1-~~--1-~~-+-~~~
Q)
:=0 c..
50      55       60      65       70      75       80 85 90       "95   100 Core Power(% of Rated)
Kp =A+ B*P p              A              8 45:;; p < 60      1.6700        -0.00867 60:;; p < 85      1.3708        -0.00368 85:;; p        1.3867        -0.00387 P =Percent of Rated Core Thermal Power FIGURE 3-3A Power-Dependent MCPR Multiplier (KP) versus Core Power 15                           Version 2

Plant Hatch                                                                     Core Operating Unit 1 Cycle 28                         Non-Proprietary Information                Limits Report 1.o+--~~+-~~1--~--1~~-+~~-l-~~-+-~~-1-~~-+-~~-1-~~-l-~-3'1 45        50      55       60       65       70      75       80 85 90       95     100 Core Power(% of Rated)
KP= A+ B*P p              A               8 45  s p < 60      1.5320         -0.00560 60  s p < 85      1.3808         -0.00308 85 s p         1.3867         -0.00387 P = Percent of Rated Core Therm al Power FIGURE 3-38 Power-Dependent MCPR Multiplier (KP) versus Core Power (Main Turbine Pressure Regulator System Status in TLCO 3.3.13.c) 16                            Version 2

                                    .*."\*
Plant Hatch                                                                                         Core Operating Unit 1 Cycle 28                             Non-Proprietary Information                                Limits Report 1.66                                                                                                   1.66 1.64                                                                                                   1.64 1.62                                                                                                   1.62 1.60                                                                                                   1.60 1.58                                                                                                   1.58 1.56                                                                                                   1.56 1.54                                                                                                   1.54 I MOC2 -EOC       I
              -     1.52
* e1.5o 0::: 1.48 ,____
::i                 BOC -EOC -
                                                                                      - -----           -     i..-----
1.52 1.50 E
::i 1.48 0:::
   ~ .-~.
D..
f; 1.46 -         (TLCO 3.3.13.c)                                                                                 u
                                                                         ..,                         1 MOC1   - MOC2 I     1.46
:!!!: 1.44                                                                                                   1.44
                                               ~
1.42                                  -~                                                               1.42
                                                ~
                                                                                                              ~
1.40                                                                                                   1.40 i--"""""                                                        I BOC -MOC1 1.38                                                                                                   1.38
                                                                     ~~
1.36
                                               -            --     ~
1.36 1.34                                                                                                   1.34 1.32                                                                                                   1.32 1.30                                                                                                   1.30 0.0       0.1        0.2   0.3    0.4      0.5           0.6  0.7         0.8      0.9        1.0
                                                                        't Main Turbine Pressure                   OLMCPR(lLOl Exposure Range Regulator Status                't =0.0          't  =1.0 BOC- MOC1                 TLCO 3.3.13.a orb                 1.31              1.42 MOC1 - MOC2               TLCO 3.3.13.a orb                 1.38              1.49 MOC2-EOC                  TLCO 3.3.13.a orb                 1.41              1.52 BOC-EOC                    TLCO 3.3.13.c                  1.41              1.52 FIGURE 3-4A-1 TLO MCPR Limits versus Average SCRAM Time 17                                           Version 2

Plant Hatch                                                                                                              Core Operating Unit 1 Cycle 28                                           Non-Proprietary Information                                       Limits Report 1.66                                                                                                                          1.66 1.64                                                                                                                          1.64 1.62                                                                                                                          1.62 1.6a                                                                                                                          1.6a I MOC2 -EOC 1.58 1.56
__,,,,.. 1.58 1.56
                                                                                                            -~
1.54 1.52  -
              -               BOC -EOC                                  ~~
                                                                                         ~
                                                                                                                 ~         ---        1.54 1.52
                                                                                                                                             ~
  *E1.5a
:J 0:: 1.48 t1.46
::!!: 1.44 (TLCO 3.3.13.c)
                                                         ~
                                                              ~*-*
                                                              ~
                                                                        ~~
                                                                                         ---  ............ I MOC1 - MOC2 1.5a E
                                                                                                                                           . ;J.
1'.48 o::.**
1.46 0 D..
1.44
                                                                                                 ~I              BOC -MOC1 1.42                                                                                                                          1.42 1.4a 1.38 1.36
                -----                         ___,,,,.. ~
___,,,,,,.,. ....... ~ i.---
1.4a 1.38 1.36
                                 .......---~
1.34                                                                                                                          1.34 1.32                                                                                                                          1.32           "*c'- ~
1.3a                                                                                                                          1.3a a.a               a.1       a.2         a.3     a.4          a.5        a.6    a.7              a.8     a.9          1.a
                                                                                 't Main Turbine Pressure                            OLMCPRnLo)
Exposure Range Regulator Status                     't     =0.0        't  =1.0 BOC- MOC1                       TLCO 3.3.13.a orb                         1.33            1.46 MOC1 - MOC2                     TLCO 3.3.13.a orb                         1.40            1.53 MOC2- EOC                       TLCO 3.3.13.a orb                         1.44            1.57 BOC-EOC              ..          TLCO 3.3.13.c                          1.44            1.57 FIGURE 3-4A-2 TLO MCPR Limits versus Average SCRAM Time (EOC-RPT Out of Service) 18                                                  Version 2

Plant Hatch                                            ,,..                                                Core Operating Unit 1 Cycle 28                                      Non-Proprietary Information                              Limits Report 1.66                                                                                                             1.66 1.64                                                                                                             1.64 1.62                                                                                                             1.62 1.6a                                                                                                             1.6a 1.58                                                                                                             1.58 1.56                                                                                                             1.56 I MOC2 -EOC 1.54                                                                                                             1.54
   -  1.52
                                                                                  -                ----                1.52
                                                                                     ~                                       ~
   *E 1.5a   -      BOC -EOC
                                                                               -                                       1.5a E
:J        -    (TLCO. 3.3.13.c)
                                              *-* ..                ~
                                                                                                   ~     ~-*                 :J 1.48 D:
  'D: 1.48                                                                                                                       '--
                              ---                                                    ~          I MOC1   - MOC2              fl.
f; 1.46                                                                                                             1.46 .U
   ~1.44
                         ~
1.44
                                                                                                                             ~
1.42 1.4a 1.38 1.36 I BOC -MOC1 1.42 1.4a 1.38 1.36 1.34                                                                                                             1.34 1.32                                                                                                             1.32 1.3a                                                                                                             1.3a a.a       a.1     a.2            a.3             a.4      a.5      a.6  a.7        a.8      a.9        1.a t
Main Turbine Pressure                 OLMCPR(lLOl Exposure Range Regulator Status           t =  0.0        t   =  1.0 BOC- MOC1                                TLCO 3.3.13.a orb           1.36              1.42 MOC1 - MOC2                              TLCO 3.3.13.a orb           1.39              1.50 MOC2-EOC                                 TLCO 3.3.13.a orb           1.43              1.54 BOC-EOC                                   TLCO 3.3.13.c            1.43             .1.54 FIGURE 3-4A-3 TLO MCPR Limits versus Average SCRAM Time (Main Turbine Bypass System Inoperable) 19                                     Version 2

Piant Hatch                                                                                                                  Core Operating Unit 1 Cycle 28                                                Non-Proprietary Information                                     Limits Report
~*
1.66                                                                                                                           1.66 1.64                                                                                                                           1.64 I MOC2 -EOC 1.62                                                                                                                           1.62 1.60                                                                                                                           1.60 1.58 1.56 1.54  ,____
1.52 ,____
BOC - EOC (TLCO 3.3.13.c)
                                                         ........-  -- ~             -----   --  --  --- ---               --
I MOC1 - MOC2
                                                                                                                              ~
1.58 1.56 1.54 1.52
     *~
E 1.5o
                                           ~                                                 i.-----                                      1.50 E
                                                                                                                          *~
                          -~ ., *-                                                 ~
      ~ 1.48
                                                                               ~                                  ,.    .                      *~
                                               .*.'I.
                                            *r        ~*                                                             ~*
{48       .
Cl.
f; 1.46                                                                                                    1      BOC -MOC1         1.46 u
                                     *~ i-----                                               i.-----                                           :!!:
:!!: 1.44                                                                                                                           1.44
                                                                               ~
1.42                                                        ......                                                             1.42 1.40                                                                                                                           1.40 i------
1.38             ,_......                                                                                                      1.38 1.36 1.34 1.32
                   ------                                                                                                                 1.36 1.34 1.32 1.30                                                                                                                           1.30 0.0        0.1         0.2             0.3           0.4          0.5       0.6    0.7         0.8          0.9       1.0 t
Main Turbine Pressure                    OLMCPRclloJ Exposure Range Regulator Status                 t  =0.0              t   =1.0 BOC- MOC1                                    TLCO 3.3.13.a orb                  1.36                 1.50 MOC1 - MOC2                                  TLCO 3.3.13.a orb                  1.42                 1.56 MOC2- EOC                                    TLCO 3.3.13.a orb                  1.47                 1.61 BOC-EOG                                           TLCO 3.3.13.c               1.47 .               1.6*1 FIGURE 3-4A-4 TLO MCPR Limits versus Average SCRAM Time (EOC-RPT Out of Service and Main Turbine Bypass System Inoperable) 20                                             Version 2

 -*-**-~  ;*:*
Plant Hatch                                                                                                   Core Operating Unit 1 Cycle 28                                      Non-Proprietary Information                                  Limits Report 1.66                                                                                                              1.66 1.64                                                                                                              1.64 1.62                                                                                                              1.62 1.60                                                                                                              1.60 1.58                                                                                                              1.58 1.56                                                                                          MOC2 -EOC           1.56 I
1.54                                                                                                              1.54
    ~Ti!8 1.52
    *E 1.5o t-BOC -EOC
                ..__ (TLCO 3.3.13.c)
                                       . ''*~*
                                                 -~
                                                        . ---                     .....   .,,  . JMOC1      ~
1.52 1.50
                                                                                                                                  ~
E MQC2. "'f.'4e*~*-**.. *****
a.
f; 1.46                 *****                ..*                                             , ...... I   ~* ..       1.46 0
                                                                                                                                - ~-
    ~1.44                                                                                                                  1.44 1.42 I BOC -MOC1 I             1.42 1.40                                                                                                             *1 ..40 1.38                                                                                                              1.38 1.36                                                                                                              1.36 1.34                                                                                                              1.34 1.32                                                                                                              1.32 1.30                                                                                                              1.30 0.0      0.1       0.2        0.3        0.4       0.5       0.6  0.7           0.8        0.9         1.0 Main Turbine Pressure                  OLMCPRcsLO)
Exposure Range Regulator Status               't =0.0            't  =1.0 BOC- MOC1                          TLCO 3.3.13.a orb               1.45                1.45 MOC1 - MOC2                        TLCO 3. 3.13.a or b             1.45                1.52 MOC2- EOC                          TLCO 3.3.13.a orb               1.45                1.55 BOC-EOC                              TLCO 3.3.13.c               1.45                1.55 FIGURE 3-48-1 SLO MCPR Limits versus Average SCRAM Time 21                                          Version 2

Plant Hatch                                                                                             Core Operating Unit 1 Cycle 28                               Non-Proprietary Information                                  Limits Report 1.66                                                                                                       1.66 1.64                                                                                                       1.64 1.62                                                                                                       1.62 I
1.60 MOC2 -EOC               1.60 1.58
                                                                             -----      -         .-                1.58 1.56 1.54  -     BOC - EOC                                   -   - - --
                                                                       ~                       ~      ......---     1.56 1.54 L.........---            ~ 1
               -                                                                           MOC1 - MOC2
   *e...
1.52      (TLCO 3.3.13.c)                                                                                  1.52
:i 1.50 0:: 1.48 f; 1.46
                       ~~
               --- -----      i----
i.....---
1......--- -                                     I BOC -MOC1 I
I 1.5o
                                                                                                                         ~
E
:J 1.48 0::
ll..
1.46 u
 . a: *;:*4;*                                                                                                       1.44 a:
1.42                                                                                                       1.42 1.40                                                                                                       1.40 1.38                                                                                                       1.38 1.36                                                                                                       1.36 1.34                                                                                                       1.34 1.32                                                                                                       1.32 1.30                                                                                                       1.30 0.0     0.1    0.2       0.3        0.4          0.5    0.6  0.7         0.8          0.9         1.0 t
Main Turbine Pressure                OLMCPR1sLo)
Exposure Range Regulator Status             't =0.0              't  =1.0 BOC- MOC1                     TLCO 3.3.13.a orb              1.45                  1.49 MOC1 - MOC2                   TLCO 3.3.13.a orb              1.45                  1.56 MOC2- EOC                     TLCO 3.3.13.a orb              1.47                  1.60 BOC-EOC                        TLCO 3.3.13.c               1.47                  1.60 FIGURE 3-48-2 SLO MCPR Limits versus Average SCRAM Time (EOC-RPT Out of Service) 22                                           Version 2

Plant Hatch                                                                                                          Core Operating Unit 1 Cycle 28                                        Non-Proprietary Information                                    . Limits Report 1.66                                                                                                                 1.66 1.64                                                                                                                 1.64 1.62                                                                                                                 1.62 1.60                                                                                                                 1.60 1.58                                                                                             MOC2 -EOC       I   1.58 I
1.56 1.54
                                                                                                   -     ~
1.56 1.54
                                                                                 ~
1.52      - (TLCO BOC -EOC 3.3.13.c) 1.52
                                                                                                                                     ~
     *E 1.50         - -- .-                                                                                       - MOC2 I 1.5o E
. .. ::i      ..                  ..      --------                           ... . ....                   1 MOC1                     :J a: 1.48     *.~
i----
1.48 a:
ll..
     ~1.46                                                                                     ...                              1.46 0 al
:ii: 1.44                                                                                                                  1.44 1.42 I BOC -MOC1       I   1.42 1.40                                                                                                                 1.40 1.38                                                                                                                 1.38 1.36                                                                                                                 1.36 1.34                                                                                                                 1.34 1.32                                                                                                                 1.32 1.30                                                                                                                 1.30 0.0          0.1       0.2        0.3    0.4      0.5         0.6         0.7          0.8      0.9        1.0
                                                                       't Main Turbine Pressure                         OLMCPRcsLO)
Exposure Range Regulator Status                     't  = 0.0         't  = 1.0 BOC- MOC1                     TLCO 3.3.13.a orb                       1.45              1.45 MOC1 - MOC2                   TLCO 3.3.13.a orb                       1.45              1.53 MOC2- EOC                     TLCO 3.3.13.a orb                       1.46              1.57 BOC-EOC                        TLCO 3.3.13.c                        1.46              1.57 FIGURE 3-48-3 SLO MCPR Limits versus Average SCRAM Time (Main Turbine Bypass System Inoperable) 23                                                 Version 2

Piant Hatch                                                                                                           Core Operating Unit 1 Cycle 28                                      Non-Proprietary Information                                          Limits Report 1.66                                                                                                                            1.66 I MOC2 -EOC [
1.64 1.62
                                                                                                                 -     -- .,.,,,.,,,.-__,,,,. 1.64 1.62 1.60 1.58      ,._
BOC -EOC                          ___. ,,,,,,,,_        ----
                                                                                                         ~
1.60 1.58 1.56             (TLCO 3.3.13.c)                                                                                                1.56 I MOC1
                                                                                                                           - MOC2 1.54
                                                  ~                                __,.,,,,-                                       -            1.54 1.52
* e1.5o
       . ***::i,. **- ..
        . 0::1.48 i31:46
                                        ~
                                          **-***     ~
                                                                                                ..                I BOC -MOC1               I 1.52 1.5o 1.48 1.46 E
::i a::
a.
u
:!: 1.44       -                                        ..       -   .. c 1.44 1.42                                                                                                                            1.42 1.40                                                                                                                            1.40 1.38                                                                                                                            1.38 1.36                                                                                                                            1.36 1.34                                                                                                                            1.34 1.32                                                                                                                            1.32 1.30                                                                                                                            1.30 0.0          0.1        0.2   0.3      0.4         0.5             0.6    0.7          0.8      0.9                1.0 t
Main Turbine Pressure                             OLMCPR(SLO)
Exposure Range Regulator Status                       t   =0.0          t   =1.0 BOC- MOC1                   TLCO 3.3.13.a orb                        1.45               1.53 MOC1 - MOC2                 TLCO 3.3.13.a orb                        1.45               1.59 MOC2- EOC                   TLCO 3. 3.13.a or b                      1.50               1.64 BOC-EOC                      TLCO 3.3.13.c                         1.50               1.64 FIGURE 3-48-4 SLO MCPR Limits versus Average SCRAM Time (EOC-RPT Out of Service and Main Turbine Bypass System Inoperable) 24                                                  Version 2

                                                                         ' -;:.~.
                                              ~.... **.
* Plant Hatch                                                                          Core Operating Unit 1 Cycle 28                        Non-Proprietary Information                     Limits Report 4.0     LHGR LIMITS (Technical Specification 3.2.3)
For both two loop operation (TLO) and single loop operation (SLO), the LHGR limit for each six inch axial segment of each fuel rod in the core is the applica.ble rated-power, rated-flow LHGR limit taken from Table 4-1 *multiplied by the smaller of either:
: a. The flow-dependent multiplier, LHGRFACF, as determined by Table 4-2,
: c. The power-dependent multiplier, LHGRFACp, as determined by Figure 4-2.
Table 4-1 shows the exposure-dependent LHGR limits for all fuel types in the. core, as a..      . ,,c~:
function of initial gadolinium concentration in a six inch segment of a fuel rod. For exposures between the values shown in Table 4-1, the LHGR limit is based on linear interpolation. For illustration purposes, Figures 4-3A and 4-38 show the LHGR limits for fuel segments with the lowest (U0 2) and highest (U02+Gd203) initial Gd concentrations.
These limits apply to operation with vessel dome pressure within +/- 10 psi of nominal pressure, as defined by the Region I pressure band shown in Figure 5-1. With all equipment in service or with the EOC-RPT system out of service, operation with vessel dome pressure down to 40 psi below nominal is licensed provided the additional restrictions identified in Section 5.0 are applied with the LHGR operating limit defined in this section.
25                             Version 2

Plant Hatch                                                                                                         Core Operating
* Unit 1 Cycle 28                                    Non-Propriela,.Y Information                                            Limits Report TABLE 4-1 LHGR Limits versus Peak Pellet Exposure Fuel              Rod            Pellet                    Pellet                  Pellet    Pellet      Pellet                 Pellet Type         Segment          Maximum                 Exposure                     Power. Exposure     Power                Exposure Initial        Power                     Knee 1                  Knee 2     Knee 2      EOL                      EOL Wt-% Gd203             (kW/ft)              (GWd/ST)                     (kW/ft)  (GyYd/ST)    (kW/ft)              (GWd/ST)
GE14C              ((
                                      ; . ~ -   ....    ...
                                                                                                                                                   . 11 .
GNF2               rr                                    .. ~  ,, .. **- ****-                                      - ....         - - ........
11 EOL = End of Life (maximum licensed pellet exposure)
TABLE 4-2 Flow-Dependent LHGR Operating Flexibility Options
                                              '   -              ''~LHGRFAC"
                                                                 '                  .  .F         I*,.
Equipment In or Out of Service EOC-RPT Fuel Type                                  Main Turbine Bypass                           Main Turbine Pressure                  Figure#
System In System Operable*                          Regulator System Status Service GE14C                 Yes/No                         Yes/No                            TLCO 3.3.13.a or b or c                     4-1A GNF2                  Yes/No                              Yes                          TLCO 3.3.13.a or b or c                  . 4-18 GNF2                  Yes/No                              No                           TLCO 3.3.13.a or b or c                     4-1C
      *At least two bypass valves must be operable 26                                           Version 2

                              .........'./'.
Plant Hatch                                                                                                       Core Operating Unit 1 Cycle 28                                             Non-Proprietary Information                            Limits Report "ii:
0
 <C
 ~ 0.9
 ~
1.0 I TLO/SLO I
                                                          ~     ~
                                                                       /
v d.
CIJ                                        /
 'a 0.8                                                                                                                -
                       ~v E
:I n::               ./
 ~ 0.7 SLO
 ..J 1:
CIJ V"                                     .......*.**.
 ~
  ~0.6 21
  ~
0 u::: 0.5 0.4                                                                                                              -
30          40                  50                   60                70      80        90    100             110 Core Flow (%of Rated)
LHGRFACF= A+ B*F Operating Conditions                                          Values of Variables F                                TLO I SLO                 A            B 30.00 :5 F < 50.70                          TLO I SLO            0.4574      0.006758 50.70 :5 F < 80.29                             TLO               0.4574      0.006758 50.70:5F                                   SLO               0.8000      0.000000 80.29 :5 F                                 TLO               1.0000      0.000000 F = Percent of Rated Core Flow FIGURE 4-1A GE14C Flow-Dependent LHGR Multiplier (LHGRFACF) versus Core Flow 27                                       Version 2

Plant Hatch                                                                                        Core Operating Unit 1 Cycle          28                       Non-Proprietary Information                          Limits Report 1.0
  'i::
(.)
  <(
12 0.9
  ~                     I TLO/SLO I
                                               ~ ~
                                                       /
                                                             /
  =-...
QI                                     /
y
  'a 0.8                                                                    ,,
0::
  ~      0.7                                                               SLO
  ...J                      ir
 *c.                                                                                   ... . .
                   /     .
                                                                                               ...      ., ~ c QI "tl c:
    ~0.6
  ~
    ~
              /
0 u:     0.5 0.4 30            40          50       60          70        80         90         100              110 Core Flow (%ofRated)
LHGRFACF= A+ B*F Operating Conditions                  Values of Variables F              TLC I SLO            A             B 30.0::; F < 50.0         TLO I SLO        0.2000        0.01190 50.0::; F'< 50.7         TLO I SLO        0.4567        0.00677 50.7::; F < 80.0            TLO           0.4567        0.00677 50.7::; F             SLO           0.8000        0.00000 80.0 ::; F < 90.0           TLO           0.9820        0.00020 90.0::; F             TLO           1.0000        0.00000 F = Percent of Rated Core Flow FIGURE 4-18 GNF2 Flow-Dependent LHGR Multiplier (LHGRFACF) versus Core Flow 28                                      Version 2

Plant Hatch                                                                            Core Operating Unit 1 Cycle 28                             Non-Proprietary Information                  Limits Report
 'ii:
(.)
 <(
 ~0.9+------1-----+----+----'--l~--,,~--l-----+----t------t
 ~
Q)
 'a_0.8+------!-----+-----t.11~~~1--~~--1-~~~~~~~+--~~--1 E
::I 0:::
 ~0.7+-----t--+----+-------+------<>------+-----+--t
 ...I
 *t: .*..
Q)
 "E
[ 0.6+------!-"""'~--+----+----'--lf------1-----+--_:....;""----'t------t
  ~
  ~
  ~0.5+-----+------+----+-----t-----+-----+----i-----;
0.4+-----+-----t----+-----t-----+-----+----i-----;
30           40           50       60          70          80      90   100        110 Core Flow (%of Rated)
LHGRFACF        =A+ B*F Qperatina Conditions                   Values of Variables F              TLO I SLO             A           B 30.0::; F < 50.0        SLO I TLO          0.380      0.0049
* 50:0::; F < 60.0        SLO I TLO         -0.210      0.0167 60.0::; F < 61.2        SLO I TLO          0.390      0.0067 61.2::; F              SLO             0.800      0.0000 61.2::; F < 90.0           TLO             0.390      0.0067 90.0::; F < 100.0           TLO             0.930      0.0007 100.0::; F              TLO             1.000      0.0000 F = Percent of Rated Core Flow FIGURE 4-1C GNF2 Flow-Dependent LHGR Multiplier (LHGRFACF) versus Core Flow (Main Turbine Bypass System Inoperable) 29                               Version 2

Plant Hatch                                                                                                                                                        Core Operating Unit 1 Cycle 28                                                  Non-Proprietary Information                                                                           Limits Report 1.1 0: 1.0 0                                                                                                                                                               ,,,,,,,,,. ~
              ~
Cl                                                                                                                                                   ~
                                                                                                                                                                           ~
:5                                                                                                                                                ~
0.9 Ci.
:i     0.8 s 60% Core Flow a::
         .... g.            ...... /                        ~,,,,,,,,,.                                                                **'****-*.-* ..  .. .*:.:;
                                              ,,,,_.~ --
c      0.7 Cll "C
r::
Cll c.
              ~ 0.6
                            ~
Cll
                ~-        ~         .._ -I ll..
0.5                           > 60% Core Flow        I 0.4
                         ~       ~          ~       ~   ~    ~        ~          m          ~          w          M      ~           n             n     w        M        M  m        oo 100 Core Power(o/oofRated)
LHGRFACp= A+ B*P Operating Conditions                                                    Values of Variables p                                     F                              A                                B 24 s p < 28                               > 60                            0.5050                         0.001250 24 s p < 28                               s 60                            0.4150                         0.005000 28 s p                                 All                           0.4776                         0.005224 P = Percent of Rated Core Therm al Power F = Percent of Rated Core Flow FIGURE 4-2 Power-Dependent LHGR Multiplier (LHGRFACp) versus Core Power 30                                                                           Version 2

Plant Hatch                   *~
                                 .,. .... :i,.          Core Operating Unit 1 Cycle 2a         Non-Proprietary Information        Limits Report
((
                                                                           ))
FIGURE 4-3A GE14C LHGR versus Peak Pellet Exposure 31                      Version 2

Plant Hatch                                            Core Operating Unit 1 Cycle 28        Non-Proprietary Information       Limits Report
((
                                                                  ))
FIGURE 4-38 GNF2 LHGR versus Peak Pellet Exposure 32                      Version 2

.,,, Plant Hatch                                                                        Core Operating Unit 1 Cycle 28                       Non-Proprietary Information                    Limits Report 5.0     OPERA TING PRESSURE LIMITS For both two loop operation (TLO) and single loop operation (SLO), reactor dome pressure must be maintained within the licensed pressure bands defined by Figure 5-1.
For operation in each of these regions, the following restrictions apply:
: a. For Region I operation:
The core operating limits from Sections 2.0 through 4.0 are applicable.
: b. For Region II and Region Ill operation: . * *
: 1)     The OPRM System must be operable
: 2)      The core operating limits from Sections 2.0 are applicable
: 3)      The MFLCPR and MFLPD thermal limit ratios must remain below the maximum values determined by Table 5-1.
The MFLCPR and MFLPD thermal limit ratios are defined in terms of the core operating limits defined in Section 3.0 and Section 4.0.
The MFLCPR thermal limit ratio is the most limiting (maximum) value of the Fraction of Limiting Critical Power Ratio (FLCPR) in the core. The FLCPR is defined for each fuel assembly in the core as:
MCPRumit FLCPR         =
Fuel Assembly Minimum Critical Power Ratio where:     MCPRumit      =   MCPR operating limit defined in Section 3.0 33                                   Version 2

Plant Hatch                                                                           Core Operating Unit 1 Cycle 28                         Non-Proprietary Information                       Limits Report
* .. ~
                                                                                                                  -*   ~;;"*" ~
The MFLPD thermal limit ratio is the most limiting (maximum) value of the Fraction of Limiting Power Density (FLPD) in the core. The FLPD is defined for each six inch axial segment of each fuel rod in the core as:
Peak kW/ft power generated in a fuel rod segment FLPD          =                            LHGRumit where:      LHGRumit      =    LHGR operating limit defined in Section 4.0 The licensed equipment conditions for operation with dome pressures in Region II and Region Ill of Figure 5-1 are ~~fined in Tabl_e 5-1.                        --"-'-     ____ -"-'"-'-' _,. **---*-" __
TABLE 5-1 Pressure Dependent Operating Flexibility Options
          ** . -Reduced'-Preisure Operatio*r.* TflermafL:imit.Ratios ffom-~*-24.o/o_fo-:~100% Power ~-:.           '
Equipment In or Out of Service Main Turbine Pressure          Table#
EOC-RPT System              Main Turbine By1;1ass Regulator S~stem In Service            S~stem O[:!erable*
Status Yes                         Yes               TLCO 3.3.13.a or b                5-2 No                         Yes               TLCO 3.3.13.a or b                5-3 Flexibility Option Yes/No                       No                TLCO 3.3.13.a or b Not Licensed Flexibility Option Yes/No                     Yes/No                 TLCO 3.3.13.c Not Licensed
         *At least two bypass valves must be operable 34                                   Version 2

Plant Hatch                                                                                Core Operating Unit 1 Cycle 28                               Non-Proprietary Information                       Limits Report TABLE 5-2 Maximum Thermal Limit Ratios for Equipment In Service Operation Dome Pressure Band from;Figure 5-1          '
Limit Ratio                 Region I            Region II         Region Ill MFLCPR                        1.00               1.00                 0.92 MFLPD (CP > 28%)                  1.00               0.93                  0.83 MFLPD (CP s 28%)                  1.00               0.85                  0.83 GP = Percent of Rated Core Power TABLE 5-3 Maximum Thermal Limit Ratios for EOC-RPT Out of Service Operation Dome Pressure Band from Figure 5-1.                .*?
Limit Ratio                 Region I            Region II          Region Ill MFLCPR                        1.00               1.00                  0.90 MFLPD (CP > 28%)                  1.00               0.93                  0.83 MFLPD (CP s 28%)                  1.00               0.85                  0.83 GP = Percent of Rated Core Power 35                                  Version 2

Plant Hatch                                                                                       Core Operating Unit 1 C'lc;le.?8                               Non-Proprietary Information                          Limits Report
      .106M _ l==!:+/-:==l:::===i::=:~=:::+/-==+/-=:=+/-::==l==:::i:==::::l==+/-==+/-==+/-==+/-:==l:::===l==:i 1058.0                                                                                                      1058.0 1040 .0 Ci     1020 .0 c.
 ~
::l   1000 .0 VI VI
 ~
a..
 ~      980 .0 0
0 920 .0 20    :25  30    35    40     45  50   55   60      65      70 75    80 85     90 95   100  105 24                              Core Power (% of Rated)
P   =A + B*(CP) + C*(CP) 2 Dome Pressure Curves                 Core Power             A           B         c Nominal Dome Pressure (Pnom)           24 :::; CP :::; 100   958 .30    0.300     0.0057 Region I Upper Boun dary (Pnom+10)        24 :::; CP :::; 100   968 .30    0. 300    0.0057 Region I Lower Boundary (Pnom-10)         24 :::; CP S 100      948 .30    0.300     0.0057 Region II Lower Boundary (Pnom-20)        24 :::; CP :::; 100   938 .30    0.300     0.0057 Region Ill Lower Boundary (Pnom-4o)       24 S CP S 100         918 .30    0.300     0.0057 GP = Percent of Rated Core Power P  =Reactor Dome Pressure (psig)
FIGURE 5-1 Licensed Regions of Operating Dome Pressure versus Core Power 36                                       Version 2

Plant Hatch                                                                       Core Oper&sect;!ting Unit 1 Cycle 28                     Non-Proprietary Information                     Limits Report 6.0     PBDA AMPLITUDE. SETPOINT The amplitude trip setpoint in the Period Based Detection Algorithm in the OPRM system must be set equal to one of the licensed values reported in Table 6-1. This applies to instruments 1C51 K615 A, B, C, and D.
TABLE 6-1 Licensed OPRM Setpoints OPRM Setooint 1.11 1.15 37                                  Version 2

Plant Hatch                                                        ~- . ' ..
Core Operating Unit 1 Cycle 28                      Non-Proprietary Information                Limits Report

==7.0     REFERENCES==
: 1. NEDE-24011-P-A-22, "General Electric Standard Application for Reactor Fuel,"
November 2015, a,nd the US Supplement, NEDE-24011-P-A-22-US, November 2015.
: 2. Global Nuclear Fuel Document 003N2016-SRLR, "Supplemental Reload Licensing Report for Hatch 1, Reload 27 Cycle 28," Revision 0, November 2015.
: 3. Global Nuclear Fuel Document 003N2033-FBIR, "Fuel Bundle Information Report for
           .H~tch  1,13elqad 27. Cycle 2&sect;,''_R~yisjgn_O, ~()V~ll]b~r ?0_15.
      - 4. SNC Nuclear Fuel Document NFD-H-15-120 'iHatch~1 Cycle 28 Reload Licensing Analysis Report," Version 2, April 2017.
: 5. Global Nuclear Fuel Document NEDC-32868P, "GE14 Compliance with Amendment 22 of NEDE-24011-P-A (GESTAR II)," Revision 5, May 2013.
: 6. Global Nuclear Fuel Document NEDC-33270P, "GNF2 Advantage Generic Compliance with NEDE-24011-P-A (GESTAR II)," Revision 5, May 2013.
38                              Version 2}}