ML20071N304
| ML20071N304 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 08/02/1994 |
| From: | BALTIMORE GAS & ELECTRIC CO. |
| To: | |
| Shared Package | |
| ML20071N301 | List: |
| References | |
| NUDOCS 9408050190 | |
| Download: ML20071N304 (10) | |
Text
_
c ATTACIIMENT (1)
UNIT 1 TECIINICAL SPECIFICATION REVISED PAGES 3/4 1-17 3/49-1 BASES 3/41-3 E
9408050190 940B02 PDR ADOCK 0500 7
P
I 3/4.1 REACTIVITY CONTROL SYSTEMS 3/4.1.2 BORATION SYSTEMS Borated Water Sources - Shutdown LIMITING CONDIi10N FOR OPERATION 3.1.2.7 As a minimum, one of the following borated water sources shall be OPERABLE:
a.
One boric acid storage tank and one associated heat tracing circuit with the tank contents in accordance with Figure 3.1.2-1.
b.
The refueling water tank with:
1.
A minimum contained borated water volume of 9,844 gallons, A Tinimum boron concentration Of 2300 ppm, :nd 2h einimum solution temperature of 35=Fx;ancl pyg g APPLICABILITY: MODES 5 and 6.
l ACTION: With no borated water sources OPERABLE, suspend all operations involving CORE ALTERATIONS or positive reactivity changes until at least one borated water source is restored to OPERABLE status.
SURVEILLANCE REQUIREMENTS 4.1.2.7 The above required borated water source shall be demonstrated OPERABLE:
t a.
At least once per 7 days by:
1.
Verifying the boron concentration of the water, l
2.
Verifying the contained borated water volume of the tank, and 3.
Verifying the boric acid storage tank solution temperature when it is the source of borated water.
b.
At least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> by verifying the RWT temperature when it is the source of borated water and the outside air temperature is < 35'F.
L CALVERT CLIFFS - UNIT 1 3/4 1-17 Amendment No.-466-
INSERT A 3.
A minimum boron concentration of:
a.
2300 ppm in MODE 5, and b.
the boron concentration limit of Technical Specification 3.9.1 in MODE 6.
t
l i
3/4.9 REFUELING OPERATIONS I
3/4.9.1 BORON CONCENTRATION i
LIMITING CONDITION FOR OPERATION 3.9.1 With the reactor vessel head unbolted ce removed, the boron concentration of all filled portions of the Reactor Coolant System and the refueling pool shall be maintained within the limit provided in the COLR.
I i
APPLICABILITY: MODE 6.
[
ACTION: With the requirements of the above specification not satisfied, QERA R NS o tive f
imediately suspend all o eratJionsal g g_ CORErat 4onsLEE;g;;r c.
,ca,qtlyf ty
'ntt+ ate-and-cont +ne i
2300' ppm J anggs an l
sac solution or its
~
until the boro l
^
concentrat ts-. limit,
e provisions of ication 3.0.3 p[ec are no app ica le.
..g -gg 4
& wah;n th hmd.
SURVEILLANCE REQUIREMENTS j
4.9.1.1 The boron concentration shall be determined to be within its limit $
prior to:
a.
Removing or unbolting the reactor vessel he:d, and b.
Withdrawal of any full length CEA in excess of 3 feet from its
[
fully inserted position.
4.9.1.2 The boron concentration of the Reactor Coolant System and the refueling pool shall be determined by chemical analysis at least 3 times per 7 days with a maximum time interval between samples of 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.
l t
{
i a
4 x
t 4
I CALVERT CLIFFS - UNIT 1 3/4 9-1 Amendment No.-166-
- = -.. - - - - - -
3/4.1 REACTIVITY CONTROL SYSTEMS BASES With the RCS average temperature above 200 F, a minimum of two independent and redundant boration systems are provided to ensure single functional capability in the event an assumed failure renders one of the systems i
inoperable. Allowable out-of-service periods ensure that minor component i
repair or corrective action may be completed without undue risk to overall facility safety from injection system failures during the repair period.
{
The boration capability of either system will provide sufficient SHUTDOWN l
s' MARGIN from all operating conditions assuming xenon decay and cooldown to l
200 F.
The maximum boration capability requirement occurs at E0L from full i
power equilibrium xenon conditions and requires boric acid solution from the boric acid tanks, the concentration and volume of which are met by the range of values given in Specifications 3.1.2.8 and 3.1.2.9, or 55,627 i
gallons of 2300 ppm borated water from the refueling water tank. However, to be consistent with the ECCS requirements, the RWT is required to have a e
minimum contained volume of 400,000 gallons during MODES 1, 2, 3 and 4.
The maximum boron concentration of the refueling water tank shall be limited to 2700 ppm and the maximm boron concentration of the boric acid storage tanks shall be limited to o% to preclude the possibility of boron precipitation in the core during long term ECCS cooling.
With the RCS temperature below 200 F, one boration system is acceptable 4
without single failure consideration on the basis of the stable reactivity condition of the reactor and the additional restrictions prohibiting CORE ALTERATIONS and positive reactivity change in the event the single injection system becomes inoperable.
The baron capability required below 200 F is based upon providing sufficient SHUTDOWN MARGIN after xenon decay and cooldown from 200'F to
>t 140'F. This condition requires either boric acid solution from the boric acid tanks, the requirements of which are met by Specification 3.1.2.7, or 9,844 gallons of 2300 ppm borated water from the refueling water tank.
k NCOEh _ _
The OPERABILITY of one boration system?F NFn'hDensures that this system is available for reactivity contr'5M as re7mred by-Acr70N 3. 9. L.
3/4.1.3 MOVABLE CONTROL ASSEMBLIES 4
The specifications of this section ensure that (1) acceptable power i
distribution limits are maintained, (2) the minimum SHUTDOWN MARGIN is maintained, and (3) the potential effects of a CEA ejection accident are limited to acceptable levels.
L The ACTION statements which permit limited variations from the basic requirements are accompanied by additional restrictions which ensure that the original criteria are met. A regulating or shutdown CEA is considered to be misaligned if it is more than 7.5 inches from any other CEA in its group, however, a shutdown CEA is aise considered to be misaligned if it is CALVERT CLIFFS - UNIT 1 B 3/4 1-3 Amendment No.-H 6-
1 l
ATTACIIMENT (2)
UNIT 2 TECilNICAL SPECIFICATION REVISED PAGES 3/4 1-17 3/4 9-1 HASES 3/41-3 i
i 3/4.1 REACTIVITY CONTROL SYSTEMS 3/4.1.2 BORATION SYSTEMS Borated Water Sources - Shutdown LIMITING CONDITION FOR OPERATION 3.1.2.7 As a minimum, one of the following borated water sources shall be OPERABLE:
a.
One boric acid storage tank and one associated heat tracing circuit with the tank contents in accordance with Figure 3.1.2-1.
b.
The refueling water tank with:
1.
A minimum contained borated water volume of 9,844 gallons, nimum o ron-conc e n t ra t i on-o f-2300-ppmend-
~_
2 @ A minimum solution temperature of 35 Fgand r
T NSE ff T A' APPLICABILITY': MODES 5 and 6.
ACTION: With no borated water sources OPERABLE, suspend all operations involving CORE ALTERATIONS or positive reactivity changes until at least one borated water source is restored to OPERABLE status.
SURVEILLANCE REQUIREMENTS 4.1.2.7 The above required borated water tource shall be demonstrated OPERABLE:
a.
At least once per 7 days by:
1.
Verifying the boron concentration of the water, 2.
Verifying the contained borated water volume of the tank, and 3.
Verifying the boric acid storage tank solution temperature when it is the source of borated water.
L.
At least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> by verifying the RWT temperature when it is the source of borated water and the outside air temperature is < 35 F.
CALVERT CLIFFS - UNIT 2 3/4 1-17 Amendment No.-163-I
f i
INSERT A 3.
A minimum boron concentration of:
a.
2300 ppm in MODE 5, and b.
the baron concentration limit of Technical Specification 3.9.1 in MODE 6.
i i
3/4.9 REFUELING OPERATIONS 3/4.9.1 BORON CONCENTRATION LIMITING CONDITION FOR OPERATION 3.9.1 With the reactor vessel head unbolted or removed, the boron concentration of all filled portions of the Reactor Coolant System and the refueling pool shall be maintained within the limit provided in the COLR.
v.
l APPLICABILITY: MODE 6.
4 ACTION: With the requirements of the above specification not satisfied, immediately suspend all o erati ns involv MA tive re tiv t chan es t ate :nd cent 4mte4 erat +ca o, ?_ 40 ga cf-peiffcation3.0.3 oncen LtM i
ate notW'c1R.
in. tale adians lo fedeve lcoran 9
p,f on to u % d.s Am*/.
~
SURVEILLANCE REQUIREMENTS l
4.9.1.1 The boron concentration shall be determined to be within its limit 4
l prior to:
l a.
Removing or unbolting the reactor vessel head, and b.
Withdrawal of any full length CEA in excess of' 3 feet from its l
fully inserted position.
4.9.1.2 The boren concentration of the Reactor Coolant System and the refueling pool shall be determined by chemical analysis at least 3 times 1
per 7 days with a maximum time interval between samples of 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.
l I
h CALVERT CLIFFS - UNIT 2 3/4 9-1 Amendment No A &
3/4.1 REACTIVITY CONTROL SYSTEMS BASES The components required to perfonn this function include:
- 1) borated water sources, 2) charging pumps, 3) separate flow paths, 4) boric acid pumps,
- 5) associated heat tracing systems, and 6) an emergency power supply from 0PERABLE diesel 'pnerators. At or below 80% of RATED THERMAL POWER, there is a corresponding decrease in decay heat which compensates for the loss of injection from one charging pump assumed in the Small Break LOCA Analyses.
With the RCS average temperature above 200 F, a minimum of two independent and redundant boration systems are provided to ensure single functional capability in the event an assumed failure renders one of the systems inoperable. Allowable out-of-service periods ensure that minor component repair or corrective action may be completed without undue risk to overall facility safety from injection system failures during the repair period.
The boration capability of either system will provide sufficient SHUTDOWN y
MARGIN from all operating conditions assuming xenon decay and cooldown to 200 F.
The maximum boration capability requirement occurs at E0L from full power equilibrium xenon conditions and requires boric acid snlution from the boric acid tanks, the concentration ana volume of which are met by the range of values given in Specifications 3.1.2.8 and 3.1.2.9, or 55,627 gallons of 2300 ppm borated water from the refueling water tank. However, to be consistent with the ECCS requirements, the RWT is required to have a minimum contained volume of 400,000 gallons during MODES 1, 2, 3 and 4.
The maximum boron concentration of the refueling water tank shall be limited to 2700 ppm and the maximum boron concentration of the boric acid storage tanks shall be limited to 8% to preclude the possibility of baron precipitation in the core during long tenn ECCS cooling.
With the RCS temperature below 200*F, one boration system is acceptable without single failure consideration on the basis of the stable reactivity condition of the reactor and the additional restrictions prohibiting CORE ALTERATIONS and positive reactivity change in the event the single injection system becomes inoperable.
The boron capability required below 200 F is based upon providing sufficient SHUTDOWN MARGIN after xenon decay and cooldown from 200 F to A
140'F. This condition requires either boric acid solution from the boric acid tanks, the requirements of which are met by Specification 3.1.2.7, or 9,844 gallons of 2300 ppm borated water from the re. fueling water tank.
in C
The OPERABILITY of one boration system @l..........JW. as re ensures that this system is available for reactivity contro us 3/4.1.3 MOVABLE CONTROL ASSEMBLIES The specifications of this section ensure that (1) acceptable power distribution limits are maintained, (2) the minimum SHUTDOWN MARGIN is maintained, and (3) the potential effects of a CEA ejection accident are limited to acceptable levels.
j i
CALVERT CLIFFS - UNIT 2 B 3/4 1-3 Amendment No. -ifr3-1
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