ML20204K021
| ML20204K021 | |
| Person / Time | |
|---|---|
| Site: | Millstone, Haddam Neck, 05000000 |
| Issue date: | 06/03/1988 |
| From: | CONNECTICUT YANKEE ATOMIC POWER CO. |
| To: | |
| Shared Package | |
| ML20204H467 | List:
|
| References | |
| FR-P.2, NUDOCS 8810250321 | |
| Download: ML20204K021 (5) | |
Text
_
NUMBER EU REV. ISWE/DATE s
FR.P.2 RESPONSE TO ANTICIPATED PRESSURIZED Re,1 THERMAL SHOCK CONDITION I
A.
PURPOSE nis procedure provides actions to respond to a limited overcooling condition or to an overpressure condition at low temperature.
B.
SYMPTOMS OR ENTRY CONDITIONS Dis procedure is entered from F-0.4, INEGRITY Critical Safety Function Status Tree on a YELLOW condition.
l l
t 1
Page 1 of 5
~ ra10260321$$o80[ta PDR ADOCK PDR P
NUMBER EM REY. ISSIAUDATE F R.P.2 RESPONSE TO ANTICIPATED PRESSURIZEn p<. I THERMAL SHOCK CONDITION L_
k 517.P ACTION / EXPECTED RESPONSE RESPONSEhb dBTAINED
~
1 CHECK RCS COLD LEG TRY TO STOP RCS COOLDOWN:
TEMPERATURES STABLE OR INCREASING a.
Verify naaospheric ve.nt valve is closed,
- b. Verify condenser steam dump valves
- closed,
- c. E any SG pressure is decreasing in an uncontmiled manner DR any SG is completely depresstaized, DEN isolate faulted SG(s):
o Isolate al' f.s'. water unless necessary for RCS e prature control.
o Verify r.
. eamline isolation and bypass v.ves closed.
o Close steam supply valves to turbine driven AFW pump.
Maintain total feedwater flow greater than 320 GPM until wide range levelin i
at least one nonfaulted SG is greater than 63 %
(67 % for adverse containment),
- e. E a faulted SG is necessary for RCS temperature control, DEN control feedwater flow at 25 GPM to that SG.
f, E all SGs faulted, DEN control feedwater flow at 25 GPM to each SG.
4
- g. E RiiR System in service, DEN stop any cooldown from RIIR System.
I i
Page 2 of 5
JUN 3198(
NUMBER 4IJ REV. ISSUFAATE FR P.2 RESPONSE TO ANTICIPATED PRESSURIZED Rev.1
-s THERMAL SHOCK CONDITION
(
STEP ACDON/EXPECED RESPONSE RESPONSE NOT OBTAINED 2
CHECK IF SI HAS BEEN QQIQ STEP 5.
TERMINATED:
o Check HPSI pumps -
ALL STOPPED o Only one charging pump running 3
CHECK RCS PRESSURE WITHIN DECREASE RCS PRESSURE TO LIMITS OF TECHNICAL WIEIN TECHNICAL SPECIFICATIONS SECTION 3.4, SPECIRCATIONS SECTION 3.4, FIGURE 3.4-9 FOR A 100' F / HR FIGURE 3.4 9 USINO NORMAL COOLDOWN RATE SPRAY.
E NORMAL SPRAY EQI AVAILABII.
ASQ LE1DOWN IS IN SERVICE, THEN USE AUX 1LIARY SPRAY.
E LETDOWN EQIIN SERVICE, THEN USE ONE PRZR PORV.
4 DETERMINEIF ADDrrIONAL RCS COOLDOWN RESTRICTIONS ARE REQUIRED:
- a. Cooldown rate in RCS cold legs -
- a. Additional cooldown restrictions GREATER THAN 100* F IN ANY are not required.
60 MINU'm PERIOD QQIQ Step 5.
- b. RCS cooldown is permitted with the following restnctions:
- 1. Maintain RCS pressure and cold leg temperatures within the limits of Figure FRP21.N QR Figure FRP21.A
- 2. Maintain cooldown rate in RCS cold legs less than 100' Fin any 60 minute period.
5 REWRN10 PROCEDURE AND STEP IN EFFECT END Page 3 of 5
NUMBER 1 TIM REY ISSUE /DA17.
F R.P.2 RESPONSE TO ANTICIPATED PRESSURIZED Rev.1 THERMAL SHOCK CONDITION
(
2600 l
l
/
/
24m
/
/
/
)
22m
/
/
/
/
2x0
/
/
/
/
ism
[
OPERATING
/
~
/
ZONE f
INDICARD J
REACTOR A
[
[
COOLAST PRESSURE F
/
( PSIG) 1400
~
/
7 i2m
/
/
1000
/
l l
gm
/
/
J
/
/
/
a
/
/
200 200 300 400 500 600 700 INDICAHD REACIOR COOIANT TBiPERATURE (' F) l FIGURE FRP2-1.N COOLDOWN LLNirr NORMAL CONTAIh3 TEST i
Page 4 of 5
dun 3 1906
\\
NUMBER Tnu
.{
REV. ISSUFJDATE fro P.2 RESPONSE TO ANTICIPATED PRESSURIZED Rev 1 o
THERMAL SIIOCK CONDITION
(
2600 f
/
~
2400 J
OPERATING /
J zone l
2200
/
/
/
/
2000
/
/
I l
/
1800
/
/
INDICATED
/
/
REACTOR 1000 COOtar
/
/
PRESSURE
/
/
( PSIG) 1400 1200
/
/
1000 1
800
/
/
/ /
e
)
400 200 200 300 400 500 600 700 INDICATED REACIOR COOIMT TEMPERATURE (
- F)
FIGURE FRP21.A COOllX)WN13ffr ADVERSE CONTAIh%iEST Page 5 of 5