Text

Proposed Tech Specs Re Reactivity Control Sys for Borated Water Sources & Refueling Water Storage Tank
	ML16341F238
Person / Time
Site:	Diablo Canyon
Issue date:	07/05/1989
From:	; PACIFIC GAS & ELECTRIC CO.
To:	;
Shared Package
ML16341F236	List: DCL-89-182, Application for Amends to Licenses DPR-80 & DPR-82, Consisting of License Amend Request 89-08,reducing Boron Concentration in Boric Acid Sys from 12 to 4 Weight Percent; ML16341F235; ML16341F238;
References
	NUDOCS 8907130039
	Download: ML16341F238 (24)
	v • d • e

ATTACHHENT B HARKED-UP TECHNICAL SPECIFICATIONS QPJh~V 3/4 1-1 3/4 1-3 3/4 1-7 3/4 1-8 3/4 1-9 3/4 1-12 3/4 1-13 3/4 5-11 3/4 9-1 3/4 10-1 8 3/4 1-2 3/4 1-1 3/4 1-3 3/4 1-7 3/4 1-8 3/4 1-9 3/4 1-12 3/4 1-13 3/4 5-11 3/4 9-1 3/4 10-1 B 3/4 1-2 2773S/0069K 8907130039 S90705 PDR ADOCK 05000275 P

PDC

3/4. 1 REACTIVITY CONTROL SYSTEMS 3/4. 1. 1 BORATION CONTROL SHUTDOWN MARGIN " T GREATER THAN 200 F

LIMITING CONDITION FOR OPERATION 3.1.1.1 The SHUTDOWN MARGIN shall be greater than or equal to 1.6X ak/k.

APPLICABILITY:

MODES 1, 2", 3, and 4.,

ACTION:

With the SHUTDOWN MARGIN less than 1.6 hk/k, immediately initiate and continue boration 'at greater than or equal to gpm of a solution containing greater than or equal to ppm boron or equivalent until the required SHUTDOWN MARGIN is restored.

7rQQQ SURVEILLANCE RE UIREMENTS

4. 1. 1. 1. 1 The SHUTDOWN MARGIN shall be determined to be greater than or equal to 1.6X b,k/k:

Within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months after detection of an inoperable control rod(s) and at least once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months thereafter while the rod(s) is inoperable.

If the inoperable control rod is immovable or untrippable, the above required SHUTDOWN MARGIN shall be verified acceptable with an increased allowance for the withdrawn'orth of the, immovable or untrippable con-trol rod(s);

b.

When in MODES 1 or 2 with K ff greater than or equal to 1, at least eff once per 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months 's by verifying that control bank withdrawal is within the limits of Specification

3. 1.3.6; c.

When in MODE 2 with K ff less than 1, within 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months prior to achiev-eff ing reactor criticality by verifying that the predicted critical control rod position is within the limits of Specification

3. 1.3.6; d.

Prior to initial operation above 5X RATED THERMAL POWER after each fuel loading, by consideration of the factors of Specification

4. 1. 1. 1. 1e.,

below, with the control banks at the maximum insertion limit of Specification

3. 1.3.6; and

See Special Test Exceptions Specification

3. 10. l.

DIABLO CANYON - UNITS 1 8 2

f 3/4 1-1

REACTIVITY CONTROL SYSTEMS SHUTDOWN MARGIN - T LESS THAN OR E(UAL TO 200 F

LIMITING CONDITION FOR OPERATION

3. 1. 1.2 The SHUTDOWN MARGIN shall be greater than or equal to lX Dk/k.

APPLICABILITY:

MODE 5.

ACTION:

30 With the SHUTDOWN MARGIN less than A k/k, immediately initiate and continue boration at greater than or equal to gpm of a solution containing greater than or equal to MARGIN is restored.

ppm boron or equivalent until the required SHUTDOWN 7;000 SURVEILLANCE RE UIREMENTS

4. 1. 1.2 The SHUTDOWN MARGIN shall be determined to be greater than or equal to 1X hk/k:

Within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months after detection of an inoperable control rod(s) and at least once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months thereafter while the rod(s) is inoperable.

If the inoperable control rod is immovable or untrippable, the SHUTDOWN MARGIN shall be verified acceptable with an increased allowance for the withdrawn worth of the immovable or untrippable control rod(s);

and b.

At least once per 24-hours by consideration of the following factors:

1)

Reactor Coolant System boron concentration, 2)

Control rod position, 3)

Reactor Coolant System average temperature, 4)

Fuel burnup based on gross thermal energy generation, 5)

Xenon concentration, and 6)

Samarium concentration.

DIABLO CANYON - UNITS 1 & 2 3/4 1-3

REACTIVITY CONTROL SYSTEMS 3/4. 1. 2 BORATION SYSTEMS FLOW PATH -

SHUTDOWN LIMITING CONDITION FOR OPERATION 3.1.2.1 As a minimum, one of the following boron injection flow paths shall be OPERABLE with motor-operated valves required to change position and pumps required to operate for boron injection capable of being powered from an OPERABLE emergency power source:

a.

A flow path from the boric acid tanks via a boric acid transfer pump and charging pump to the Reactor Coolant System if the boric acid storage tank in Specification

3. 1.2.5a.

is OPERABLE, or b.

The flow path from the refueling water storage tank via a charging pump to the Reactor Coolant System if the refueling water storage tank in Specification

3. 1.2.5b.

is OPERABLE.

APPLICABILITY:

MODES 5 and 6.

ACTION:

With none of the above flow paths OPERABLE or capable of being powered from an OPERABLE emergency power source, suspend all operations involving CORE ALTERATIONS or positive reactivi'ty changes.

SURVEILLANCE RE UIREMENTS

4. 1.2. 1 At least one of the above required flow paths shall be demonstrated OPERABLE:

a.

At least once per 7 days by verifying that the temperature of the flow path is greater than or equal to g5 ~F when a flow path from the boric acid tanks is used, and b.

At least once per 31 days by verifying that each valve (manual, power-operated or automatic) in the flow path that is not locked,

sealed, or otherwise secured in position, is in its correct position.

DIABLO CANYON - UNITS 1 8

2 3/4 1-7

) REACTIVITY CONTROL SYSTEMS FLOW PATHS - OPERATING LIMITING CONDITION FOR OPERATION 3.1.2.2 Each of the following boron injection flow paths shall be OPERABLE:

a.

The flow path from the boric acid tanks via a boric acid transfer pump and a charging pump to the Reactor Coolant System (RCS),

and b.

The flow path from the refueling water storage tank via a charging pump to the RCS.

APPLICABILITY:

MODES 1, 2, 3 and 4¹.

ACTION:

a ~

With the flow path from the boric acid tanks inoperable, restore the inoperable flow path to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in at least HOT STANDBY and borated to a SHUTDOWN MARGIN equivalent to at least 1X Dk/k at 200'F within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months ; restore the flow path to OPERABLE status within the next 7 days or be in COLD SHUTDOWN within the next 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

With the flow path from the refueling water storage tank inoperable, restore the flow path to OPERABLE status within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

SURVEILLANCE RE UIREMENTS

4. 1. 2. 2 Each of the above required flow paths shall be demonstrated OPERABLE:

At least once per 7 days by verifying that the temperature of the flow path from the boric acid tanks is greater than or equal to ~F, 65 At least once per 31 days by verifying that each valve (manual, power-operated or automatic) in the flow path that is not locked,

sealed, or otherwise secured in position, is in its correct

position, c.

At least once per 18 months by verifying that each automatic valve in the flow path actuates to its correct position on a safety injection test signal, and

¹Only one boron injection flow path is required to be OPERABLE whenever the temperature of one or more of the RCS cold legs is less than or equal to 323'F.

DIABLO CANYON - UNITS 1 L 2 3/4 1-8

, REACTIVITY CONTROL SYSTEMS SURVEILLANCE RE UIREMENTS Continued d.

At least once per 18 months by verifying that the flow path required by Specification 3.1.2.2a.

delivers at least~

gpm to the RCS.

DIABLO CANYON " UNITS 1 8

2 3/4 1-9

0

REACTIVITY CONTROL SYSTEMS BORATED MATER SOURCE -

SHUTDOMN LIMITING CONDITION FOR OPERATION

3. 1.2.5 As a minimum, one of the following borated water sources shall be OPERABLE:

a.

A Boric Acid Storage System

~~ with:

zC99 1)

A minimum contained borated water volte o

gallons, 2}

A boron concentration between,

and, ppa, and 3)

A minimum solution temperature pf~F.

b.

The Refueling Mater Storage Tank (

) with:

1)

A minimum contained borated water volte of 50,000 gallons, 2)

A minimum boron concentration of 2300 ppm d

3)

A minimum solution temperature of 354F.

APPLICABILITY:

MODES 5 and 6.

ACTION:

Mith no borated water source OPERABLE, suspend all operations involving CORE ALTERATIONS or positive reactivity changes.

SURVEILLANCE RE UIREMENTS

4. 1.2.5 The above required borated water source 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, and 3)

Verifying the boric acid storage tank solution temperature when it is the source of borated water.

b.

At least once per 24,.hours by verifying the RMST temperature when it is the source of borated water and the outside ambient air temperature is less than 35 F.

DIABLO CANYON - UNITS 1 4 2 3/4 1-12 Amendment Nos.

14 and 13 June 12, 1987

C

REACTIVITY CONTROL SYSTEMS BORATED WATER SOURCES " OPERATING LIMITING CONDITION FOR OPERATION

3. 1.2.6 Each of the following borated water source(s) shall be OPERABLE:

a.

A Boric Acid Storage System

-eh~A with:

I4)04K 1)

A minimum contained borated water volume of~ gallons, 7000

+r700 2)

A boron concentration between~ and ~888. ppm, and 65 3)

A minimum solution temperature of +i& F.

b.

The Refueling Water Storage Tank (RWST) with:

1)

A contained borated water volume of greater than or equal to 400,000 gallons, 2)

A boron concentration between.2300 and 2500 ppm,

, and 3)

A minimum solution temperature of 35'F.

APPLICABILITY:

MODES 1, 2, 3 and 4, ACTION:

a.

With the Boric Acid Storage System inoperable, restore the system to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and borated to a SHUTDOWN MARGIN equivalent to at least 1X hk/k at 200'F; restore the Boric Acid Storage System to OPERABLE status within the next 7 days or be in COLD SHUTDOWN within the next 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

b.

With the RWST inoperable, restore the tank to OPERABLE status within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

DIABLO CANYON - UNITS 1 8( 2 3/4 1-13 Amendment Nos.

14 and 13 June 12, 1987

EMERGENCY CORE COOLING SYSTEMS 3/4.5.5 REFUELING MATER STORAGE TANK LIMITING CONDITION FOR OPERATION 3.5.5 The Refueling Mater Storage Tank (RMST) shall be OPERABLE with:

a.

A minimum contained borated water volte of 400,000 gallons, b

A boron concentration of between 2300 and 2500 ppm

, and c.

A minimum solution temperature of 35 F.

APPLICABILITY:

NODES 1, 2, 3 and 4.

ACTION:

Mith the RMST inoperable, restore the tank to OPERABLE status within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months or be in at least HOT Si'ANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOMN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

SURVEILLANCE RE UIREHENTS 4.5.5 The RMST shall be demonstrated OPERABLE:

a.

At least once per 7 days by:

1)

Verifying the contained borated water volume in the tank, and 2)

Verifying the boron concentration of the water.

b.

At least once per 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months by verifying the RMST temperature when the outside ambient air temperature is less than 354F.

DIABLO CANYON - UNITS 1 4 2 3/4 5-11 Amendment Nos. l4 and l3 June 12, 1987

3/4.9 REFUELING OPERATIONS B/4. 9. 1 BORON CONCENTRATION LIMITING CONDITION FOR OPERATION 3.9.1 The boron concentration of all filled portions of the Reactor Coolant System and the refueling canal shall be maintained uniform and sufficient to ensure that the more restrictive of the following reactivity conditions is met either:

a.

A Keff of 0. 95 or less, which includes a 2X hk/k conservative allowance for uncertainties, ol b.

A boron concentration of greater than or equal to 2000 ppm, which includes a 50 ppm conservative allowance for uncertainties.

APPLICABILITY:

MODE 6".

ACTION:

With the requirements of the above specification not satisfied, immediately suspend all operations involving CORE ALTERATIONS or positive reactivity ~g changes and initiate and continue boration at greater than or equal to ~ gpm of a solution containing greater than or equal to ppm boron or its equivalent until K ff is reduced to less than or qual to 0.95 nr the boron eff concentration is restored to greater than or qual to 2000 ppm, whichever is the more restrictive.

/Ooa SURVEILLANCE RE UIREMENTS 4.9.1.1 The more restrictive of the above two reactivity conditions shall be determined prior to:

a.

Removing or unbolting the reactor vessel

head, and b.

Withdrawal of any full-length control rod in excess of 3 feet from its fully inserted position within the reactor vessel.

4.9.1.2 The boron concentration of the Reactor Coolant System and the refueling canal shall be determined by chemical analysis at least once each 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months .

"The reactor shall be maintained in MODE 6 whenever fuel is in the reactor vessel with the vessel head closure bolts less than fully tensioned or with the head removed.

DIABLO CANYON - UNITS 1 8 2

3/4 9-1

0 C

3/4.10 SPECIAL TEST EXCEPTIONS 3/4.10.1 SHUTDOWN MARGIN LIMITING CONDITION FOR OPERATION 3.10.1 The SHUTDOWN MARGIN requirement of Specification 3.1.1.1 may be suspended for measurement of control rod worth and shutdown margin provided reactivity equivalent to at least the highest estimated control rod worth is available for trip insertion from OPERABLE control rod(s).

APPLICABILITY:

MODE 2.

ACTION:

With any full-length control rod not fully inserted and with less than the above reactivity equivalent available for trip insertion immediately initiate and continue boration at greater than or equal t

gpm of a solution containing greater than or equal to C~lCC'7,QQQ ppm boron or its equivalent until the SHUTDOWN MARGIN required by Specification 3.1.1.1 is restored.

With all full-length control rods fully inserted and the reactor subcritical by less than the above reactivity equivalent, immedi'ately initiate and continue boration at greater than or equal to gpm of a solution containing greater than or equal to ppm boro its equivalent until the SHUTDOWN MARGIN requ'd by Specificatio 3.1.1.1 is restored.

7, 000 SURVEILLANCE RE UIREHENTS 4.10.1.1 The position of each full-length control rod either partially or fully withdrawn shall be determined at least once per 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months .

4. 10. 1.2 Each full-length control rod not fully inserted shall be demonstrated capable of full insertion when tripped from at least the 50K withdrawn position within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months prior to reducing the SHUTDOWN MARGIN to less than the limits of Specification 3.1.1.1.

DIABLO CANYON - UNITS 1 8 2 3/4 10-1

(,

REACTIVITY CONTROL SYSTEHS BASES 3/4.1.1.4 HINIHUH TEHPERATURE FOR CRITICALITY This specification ensures that the reactor will not be made critical with the Reactor Coolant System average temperature less than 5414F.

This limitation is required to ensure:

(1) the moderator temperature coefficient is.

within its analyzed temperature

range, (2) the protective instrumentation is within its normal operating range, (3) the pressurizer is capable of being in an OPERABLE status with a steam bubble, and (4) the reactor vessel is above its minimum RTNDT temperature.

3/4. 1. 2 BORATION SYSTEMS The boron injection system ensures that negative reactivity control is available during each mode of facility operation.

The components required to perform this function include:

(1) borated water sources, (2) charging

pumps, (3) separate flow paths, (4) boric acid transfer

pumps, and (g) an emergency power supply from OPERABLE diesel genera-at BOL ~hen horafin9 fern fry" Zero Fpaat r fb COLS Sf/u7DQW'lV With the RCS average temperature above 200'F, a minimum of two boron injection flow paths are required to ensure single functional capability in the event an assumed failure renders one of the flow paths inoperable.

The boration capability of either flow path is sufficient to provide a

SHUTDOWN HARGIN from expected operating conditions of 1.6X hk/k after xenon decay an cooldown to 200'F.

The maximum expected boration capability requirem n

ccurs and requires gallons o

ppm borated water from the boric acid storage tanks or gallons of 2300 ppm 7

gborated water from the ref ue1 ing water storage tank.

+g 7Q 4 l

With the RCS temperature below '200 F, one Boron Injection 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 injec-tion system becomes inoperable.

The boron capabiTity re uired below 200'F is sufficient to provide a

SHUTDOWN HARGIN of 3X hk/k a er xenon decay and cooldown from 2004F to 140~F.

This condition requires either gallons of ppm borated water from the boric acid storage tanKs or gaTlons of 2300 ppm borated water from the refueling water storage tank.

17865 I

The limits on contained water volume and boron concentration of the RWST also ensure a pH value of between 8.0 and 9.5 for the solution recirculated within containment after a LOCA.

This pH band minimizes the evolution of iodine and minimizes the effect of chloride and caustic stress corrosion on mechanical systems and components.

DIABLO CANYON - UNITS 1 4 2 B 3/4 1-2 Amendment Nos 14 and 13 June 12, 1987

I

'J C~

ML16341F238

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