Download - UNACCEPTABLE OPERATION
I
.'
. .
'
- LN E
.
THERMAL POWER LEVEL, %
. 120112
(35, 112)(-34, 112) - 110-
| ACCEPTABLE
m; = 1.69 | *2 .0= -
OPE 10N(-47, 90)
| 86.85 90 (46, 90)..
| ACCEPTABLEI I| go| |
""
l |4 & 3 PUMP !| | OPERATION-
||
[l 70
|..
I (46, 64.85)(-47, 64.85) iI
| | 58.88 60 I..
I IACCEPTABLE l|
| 1 4, 3 & 2 PUMP 50 I ,..
I I CPERATION |
I I 40 I..
(-47, 36.88)I I | (46, 36.88),
I II 30 g, |
|.-
[ l I I
UNACCEPTABLE sI ., | 20 l IUNACCEPTABLE..
OPERATION 'I I "I NI N OPERATIONa I aI " "10
-| -1 :| |<--
-
f f ? f it I f I t t I I I I t |
-60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70,
a or
SMUD CYCLE 5 CORE PROTECTION . SAFETY LIMITS
CURVE REACTOR COOLANT DESIGN FLOW, GPM
: :'u;: K01 YH ORidlAL3 187,986
. SAC 9AMENTO MUNICIPAL UTILITY DISTRICT
-
. - - _ - _ - _ _ _ _ - - - _ .
iI.
Figure 2.3-2 PROTECTIVE SYSTEM MAXIMUM ALLOWABLE SETPOINTS,
REACTOR POWER IMBALANCE (CYCLE 5 ).
THERMAL POWER LEVEL, %
'08 ''(-16,108) (16,108)EpCCEPTABL !
m = 1.0 |4 PUMP 100 m = 1.0.
I 3PERATION | 2
(-32,92)|
, . go (32,92),
I I I II I 80.35 80 i |
ACCEPTABL E | ||
4 & 3 PUMP. 70 | |(32,64.35)(-32,64.35)| qPERATION |
.
| I 60 | [.
52.38 ! !|l .\CCEPTABLl | |I 4,3&2 PUMF
| I40(-32, 36.38) fPERATIOr, g
i I I |30
|1 --
I I! ! UNACCEPTABLE
| UNACCEPTABLE | |
OPERATION ,| |l ! OPERATION
~~'
fI |E7I I jo |
..
I e a au
"
i t i* I "I I I i 1= I =1 I I i
-60 -50 -40 -30 -20 -10 0 to 20 30 40 50 60
a?EA ,
eReactor Power Imbalance
SMUD CYCLE 5 MAXIMUM ALLOWABLE SETPOINTS .. :ttef
CURVE REACTOR COOLANT DESIGN FLOW, GPM -*'
| 1 387,600
2 288,374 $MU| 3 187,986 SACRAMENTO MUNICIPAL UTILITY DISTRICT
!'
. _ .
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.
, .
FIGURE 3.5 2-1 Rod index Vs Power LevelRancho Seco Cycle 50 - 60 EFPD
110!
105 (197,102) (288, 102)_
100 _'
95 _
90 (280 92)_
85 (270,81)_
80 .
operation75 Not Allowed"
70 .
65 -
60*, "***"IC**d-,
55-
y 50 (122,50) (232,50)_
_
2 45 _
40 _
35 _
30 _
25 _
Operation20All **d_
15 (60,15}_
10 .
(0,6.6) 5 _
| 0 t i i i i t i t t t ' ' ' '
o 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300
Rod Index
t f f I I I I ' ' I
o 25 50 75 100 0 25 50 75 100
g i I f f
0 25 50 75 100
Bank 6,
|
PROPOSEDONLY
NOT YET OfflClAL1
$SMUDSACRAMENTO MUNICIPAL UTILITY DISTRICT
L, .
,,-,- -- - - - - . - - ..- - - - , - .
.
FIGURE 3.5.2-2 Rod index vs Power LevelRancho Seco Cycle 550 - 250 EFPD
110105 (259,102) (280, 102)-
100 _
95 (280,92)-
90 _
85 Operation_
Not Allowed80 (270,8C )_
*75
[g_
70 _
65 J_
60,; _
55; _
y 50 (196,50) (232,50)_
2 h5 _
ho _
35 _
30 -
_
25 .
20 Operation_
15 (118,15) Allowed_
(0,6,6)10 _
5 _
o i i i i i ' ' ' ' ' ' ' ' '
0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300Rod index
i , i i i i I I ' J
0 25 50 75 100 0 25 50 75 100
e i t t i
0 25 50 75 100
Bank 6*
-
PR3P03EDDNLYNui ki uccel
.
$sMunSACRAMENTO MUNICIPAL UTILITY DISTRICT-
~
;
FIGURE 3.5 2- 3 Rod index Vs Pcwer Level |Rancho Seco Cycle 5J
230 EFPD - EOC (APSR Out) 1
Four Pump Operation
.
110105 -
(244,102) (273,102)_
100 _
95 (267,92<.
90 $-
85 [ (240,80)_
80 Operation |
Not Allowedg>.
75 _
70 _
65 -
,, 60 _
55,- (174,50)_
y 50 -
2 45 _
40 Operation_
35 Allowed-
30 _
25 _
20 _
15 (96,15)_
10 _
5 _
0 t 0 3) e i i ., , , , , , , ,
0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300-
Rod index
t_ i i t i , , , , ,
0 25 50 -75 100 0 25 50 75 100
e i i i ,
0 25 50 75 100
Sank 6
PROPOSEDONLYNDT YEfOfflCIALl
esuuoSACRAMENTO MUNICIPAL UTILITY DISTRICT
.--. . .- . _. - - . . - .
. _ __ ___ . - _ _ .
FIGURE 3.5 2- 4 Rod index Vs Power LevelRancho Seco Cycle 50 - 60 EFPD3 Pump Operation
110 ,105
100 .(197,102)' (270,10:')_
95 .
90 _ operation85 Not Allowed-
80 _
75 _
70 Restricted.
65 (232,64)-
60,, _
55,- (122,50)_
50j -
ct 45 _
40 _
operation35 Allowed_
30 _,
25 _
20 _
15 (60,15)_ ,
10 .
(0,6.6) 5,
o e 's i , , , , , , , , , , ,
0 20 40 60 30 100 120 140 .160 180 200 220 240 260 280 300
Rod Inde>
i f f i i1 1 I 1 ..j0 25 50 75 100 0 25 50 75 100
I I t I i
o 25 50 75 100!
Bank 6!
f
PROPOSEDgyLy
NOT YET OFRug
gsuuoSACRAMENTO MUNICIPAL UTILITY DISTRICT.
'.. . . - .
_
FIGURE 3.5.2- 5 Rod Index Vs Power LevelRancho Seco Cycle 550 - 250 EFPD3 Pump Operation
110105
(259,102) (270,10t)_
too .
95 _
90 .
85[_
80 3_
Operationnot Allowed |75 ~
,n 4- (232,64)65 _
60,, _
55-
(196,50)_j 50 _
2 45 _
LO _
35 _
30 Operation_
25 Allowed-
20 _
15 (118,15)_
10(0,6.6) 5
_
0 i i i i i i i e i e i i i e
o 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300
Rod Index-
t
{ t__ t t I I f i t 1 i
0 25 50 75 100 0 25 50 75 100
t I f f f
0 25 50 75 100
Sank 6
Pil0P03ED ONLY'
enrveiorrelA|.neremkut iL|
|
9suuoSACRAMENTO MUNICIPAL UTILITY DISTRICT
l
---.
;
FIGURE 3 5.2-6 Red index vs Power Level !Rancho Seco Cycle 5 !
230 EFPD - EOC (APSR Out)3 Pump Operation
110105 (244,102)100
95 _
90 _
85 _
80 _
75 operation_
Not Allowed-70 _
65 _
60,, _
55 (174,50)- _
E 50 _
b 45 _
60 _
35 _
30 Operation_
25 AII **d_
20 .
15 (96,15)_
10 _
5 _
0 i (0 4) i i i i i , , , i , ,
0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300Rod index
1 i i i j | | t ; |
0 25 50 75 100 0 25 50 75 100
1 1 f f f
0 25 50 75 100
Bank 6
.
PROPOSECONLYId.tt i7 y ,i,
y r$o, N,,
Ili b LG
$SMUDSACRAMENTO MUNICIPAL UTILITY DISTRICT
.
*
.
FIGURE 3.5.2-7 APSR Withdrawal Vs Power LevelRancho Seco Cycle 5APSR Position Limits (0-600)
110 -
(6,102) (29,102)
100 -
(6,92) (30,92) RESTRICTEDREGION90 -
80 (0,80) 7,80)
70 -
,~
m
3 60 -
(100,50)_
*50 -,
O PERMISSIBLE# OPERATING
40 REGION--
g32 30 -
20 .
10 -
0 I f f f I I 1 I I ' I
o 10 20 30 40 50 60 70 80 90 100 110
APSR withdrawal, %
nai ioa, , r
,
h\h ft 3 e
esuuoSACRAMENTO MUNICIPAL UTILITY DISTRICT,
, e
.
FIGURE 3.5.2-8 APSR Withdrawal Vs Power LevelRancho Seco Cycle 5APSR Position Limits (50-2500)
110 -
(6,102) (32,102)RESTRICTED
100 -REGION
,92) (38,92)90 -
(0,80) 45,80)80
70 -e3
h 60 -
C(100,50)*
50 -%0 PERMISSIBLE** OPERATING
0 -REGION.
uv
3'
30-
20 -
10 -
0 ' ' ' ' ' ' ' ' ' ' '
O 10 20 30 40 50 60 70 80 90 100 110
.aPSR withdrawal, %
.
rnua edw dial-
NOT Ytl N iCIAL
$SMU=CACRAMENTO MUNICIPAL UTILITY DISTRICT,
I.
.
FIGURE 3 5.2-9 Coro imbalance Vs Power LevelRancho Seco Cycle 50 - 60 EFPDimbalance Envelope
[.
110 -
(-13,102) (23,102)
f100 RESTRICTED-
REGION J(-14,92) (23,92)90 -
80 -26,80) (26,80)-
o
j 70 -
3
j 60 -
/(-50,50) (50,50)50 .
e
J PERMISSIBLEo 40 OPERATING-
2 REGION
30 -
20 .
.
10 .
i i e t t i e i i
-50 -40 -30 -20 -10 0 10 20 30 40 50
Core imbalance, %
. nw aom bo. Y_
i$) 'i i i
g SACRAMEN'f 0 MUNICIPAL UTILITY DISTRICTsuuo
_- _ _ - - - - - -____
.
'..
FIGijRE 3.5.2-10 Core imbalance Vs Power LevelRancho Seco Cycle 550 250 EFPO (APSR in)Imbalance Envelope
110 i--;
(-18.102) (73,102) l
100 -
RESTRICTEDREGION (-21,92) (23,92)
3g ,_
80 -32,80) (26,80)_
70 _
3j 60 -
%
(-50.50) (50,50)50 -
PERMISSIBLE-
U 40 OPERATING-
j*
REGION
30 -
20 -
10 -
0 i ' ' ' ' ' ' ' ' 8
-50 -40 -30 -20 -10 0 10 20 30 40 50.
Lore imbalance, %
PRBPCSEDybygre.
h a l p{? f w a$a m!,_ _ .
li A. lP
$' SACRAMENTO MUNICIPAL UTILITY DISTRICTSMUD
-
+ aO
*
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FIGURF 3 5.2-11 Core imbalance Vs Power Leve!Rancho Seco Cycle 5230 EFPD - EOC (APSR Out)Imbalance Envelope
~
110(-27,102) (14,102)
~
RESTRICTEDREGION (-28,92) (IO'92)
, .
90 -
'
(-28,80) (28,80)80 -
$ 70 -
3~
~
PERMISSIBLEs
OPERATING _(32,50)- - ~(-50,50)o 50 REGION-
e >.
'
[ 40 -
8"
30 -
0 THIS FIGURE VALID ONLY FOR OPERATION-
AFTER APSR WITHDRAWALto -
' ' ' ' ' ' ' ' ' ' '0-60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60
Core imbalance, %
.
PROPOSE [IDNLY
Nlif YEI Uffl
gSMUDSACRAMENTO MUNICIPAL UTILITY DISTRICT
.
. , - -_ __
.
RANCHO SECO UNIT 1
TECHNICAL SPECIFICATIONS
Figure 3.5.2-12
LOCA Limited Maximum Allowable Linear Heat Rate
*21
20 ..
g 19
".
.; 18 i
*
SALANCE OF CYCLE
16
FIRST 50 EFPD-[* .
! '' /=E 14 ,'
.
13
|12
0 2 4 6 8 10 12
Axiat 1,0 cation of Peak Power f rom Bottom of Core, f t.
PROPOSEDONLY'
Nul VfT OFRCIAL
$SMUD.
SACRAMENTO MUNICIPAL UTILITY DISTRICT
._.
'.*
'
.
RANCHO SECO UNIT 1
TECHNICAL SPECIFICATIONS
Design Features
53 REACTOR
Spectflcation j
, . 3 .1 - Reactor Core
5 3 1.1 The reactor core contains approximately 93.1 metric tons of slightlyenriched uranium dioxide pellets. The pellets are encapsulated inzircaloy-4 tubing to form fuel rods. Thereactorcoreismadeup(o{(2)1
177 fuel assemblies. Each fuel assembly contains 208 fuel rods.
5 31.2 The reactor core shall approximate a right circular cylinder with anequivalent diameter of 128.9 inches and an active height of 144 inches.(2)
5.3 1.3 The average enrichment of the in I core for Rancho Seco is a ,
nominal 2.57 weight percent of U Three fuel enrichments areused in the' Initial core.
:5 3.1.4 _There are 61' full-length control rod assemblies (CRA) and 8 axialpower ' shaping rod assemblies -(APSRA)= distributed in the reactor coreas shown in. FSAR figure 3 2 ,45 The full-length CRA contain a 134inch length' of silver-indium-cadmium alloy clad with stainless steel .The APSRA contain a 36 inch (gngth of silver-indium-cadmium alloyclad with stainless steel.-
3.5.1.5 The initial core will have 68 burnable poison' assemblies with! similar. dimensions as the full-length control rods. The claddingwill be zircaloy-4 ' filled with aiuminum oxide-boron carbide pellets.and placed in the core as shown in FSAR figure 3.2-2.
5. 3.:1.6 -Reload fuel assemblies and rods shall conform to. design and eval-uation described in the FSAR. A reload -core may also have bu'rnable 76poison assemblies with dimensions similar to the full-length control
.
rods with materials as specified in 5 3 1.5
5.3.2? ' Reactor Coolant System
5;3.2.1 Thereactorcoolant'systemshallbegsignedandconstructedin, . _
accordance with code requirements'
5 3.2.2 The -reactor coolant system and any connected: auxiliary systems-exposed to the reactor coolant conditions of. temperature andpressure, shall be designed for. a pressure .of 2,500 psig and a
shall be designed forja. temperature of 670 F.bg urizer surge line: temperature of 650 F. The pressurizer and pre
5.3 2.3 .The reactor coolant: system volume shall be less than 12,200 cubic_
feet..
5-4rroposed'Aa,endment No. 76
,
_ . -_ _ _