ML18010A634

Proposed Tech Specs Re RWST & Safety Injection Accumulator Boron Concentration Spray Additive Tank & Boric Acid Tank Levels

ML18010A634
Person / Time
Site:	Harris
Issue date:	05/11/1992
From:	CAROLINA POWER & LIGHT CO.
To:
Shared Package
ML18010A633	List: ML18010A632 ML18010A634
References
NLS-92-126, NUDOCS 9205180080
Download: ML18010A634 (10)

Text

ENCLOSURE 0 SERIAL: NLS-92-126 Page 1 of 1 SHEARON HARRIS NUCLEAR POWER PLANT DOCKET NO. 50-400/LICENSE NO. NPF-63 REVISION TO REQUEST FOR LICENSE AMENDMENT RWST AND SAFETY INJECTION ACCUMULATOR BORON CONCENTRATION SPRAY ADDITIVE TANK AND BORIC ACID TANK LEVELS TECHNICAL SPECIFICATION PAGES 9205180080 920511 PDR ADOCK 05000400 P PDR (1526AREV.HNP)

A minimum contained borated water volume of 6650 gallons which is ensured by maintaining indicated level of greater than or equal to 214~

REACTIVITY CONTROL SYSTEMS BORATED WATER SOURCE - SHUTDOWN LIMITINC CONDITION. FOR OPERATION 3.1.2.5 As a minimum, onc of the following borated Mater sources shall be OPERABLE:

a. choric acid tank vith:

1. A mi e

'm ui tained or4 ent t 7Z 'ca Ma le vo e o 00 ~o , chic

2. A boron concentration of betteen 7000 and 7750 ppm, and 3 ~ A minimum solution temperature of 65'F.

b. The refueling Mater storage tank (RMST) Mith:

'I

l. A minimum contained borated Mater volume of .106,000 gallons, Which is equivalent to 12Z indicated vcl, 2goo 2<00

2. A boron concentration of between and ppm, and

3. A minimum soLution temperature of 40'F.

APPLICABILITY: MODES 5 and 6.

ACTION:

With 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:

At least once per 7 days by!

1. Verifying the boron concentration of the eater,

2. Verifying the contained borated Mater volume, and 3 ~ Verifying the boric acid tank solution tcmpcraturc ~hen it is the source of borated water.

b. At least ance pcr 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> by verifying thc RWST temperature When it is the source of borated Mater and. the outside air temperature is less than 40'F.

SHEARON HARRIS UNIT 1 3/4 1-11 Amendment No.~

A minimum contained borated water volume of 24,150 gallons, which is ensured by maintaining indicated level of greater than or equal to 74%

REACTIVITY CONTROL SYSTEMS BORATED WATER SOURCES - OPERATING LIMITING CONDITION FOR OPERATION 3.1.2.6 As a minimum, the Eolloving borated vater source(s) shall be OPERABLE as required Specification 3.1.2.2:

gt

a. boric acid tank vith:

l. A mini contai

'

orate ater v e oE, 0 ons, is c ent t Z indi ed Leve

2. A boron concentration of between 7000 and 7750 ppm, and

3. A minimum soLution temperature of 65'F.

b. The refueLing water storage tank (R'WST) vith:

l.. A minimum cantai.".ed borated vater volume of 436,000 gallons, which is equivalent to 92Z indicate level.

24DO 2L 0

2. A boron concentration of bctveen and ppm,

3. A minimum solution temperature of 40'F, and

4. A maximum soLution temperature of 125'F.

APPLICABILITY: MODES 1, 2, 3, and 4.

ACTION 0

a. With the baric acid tank inopcrabLe and being used as one oE the above required borated vater sources, restore the boric acid tank to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or bc in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and borated ta a SHUTDOWN MARGIN as required by Figure 3.1-1 at 200'F; restore the boric acid tank to OPERABLE status vithin the next 7 days or be in COLD SHUTDOWN vithin the next 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

b; With the RWST inoperable, restore'the tank to OPERABLE status vithin 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> or be in at Least HOT STANDBY vithin the next 6 hours and in COLD SHUTDOWN within the Eollowing 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

SHEARON HARRIS - UNIT 1 3/4 1-12 Amendment No. ~

REACTIVITY CONTROL SYSTEMS BASES BORATION SYSTEMS (Continued)

Erom EuLl po~er equilibrium xenon conditions and requires gallons of 7000 ppm borated,water be maintained in the boric acid storage tanks or 436,000 gallons oE ppm bora ed water be maintained in the reEueLing

~ater storage tank (RWST~'400 - WOO With the RCS temperature below 350'F, one boron injection flow path is accept-abLe without single faiLure consideration on the basis of the stable reactivity SHEARON HARRIS - UNIT L B 3/4 L-2a Amendment No- +

REACTIVITY CONTR YSTEHS BASES BORATION SYSTEMS (Continued) condic'on of the reactor and the additional rescriccions prohibicing CORE ALTERATIONS and positive reaccivicy changes in che event the single boron injection flow path becomes inoperable.

The limication Eor a maximum of one charging/safety injeccion pump (CSIP) co be OPERABLE and the Surveillance Requirement to verify al.l, CSIPs evcepc the required OPERABLE pump to be inoperabLe below 325'F provides assurance that a mass addicion pressure transient can be relieved by the operacion of a single PORV.

The boron capability. required below 200'F is sufEicient to provide the required SHUTDOWN HARGIN as defined by Specification 3/4.1.1.2 after xenon decay nd cooldown from 200'F to 140'F. This condition requires either

~l +0 gallons of 7000 ppm borated wacer e maintained in the boric acid storage tanks or 106,000 gallons of ppm borated water be mai ca'ned i he RWST.

24OO-24OD jngicated lcvds used Qr 5 grveillanra. +asti The gaLlons given above are the amounts that need to be malntained in the tank in the various circumstances. To get the specified ~au~each value had added to it an allowance Eor the unusable voLume oE water in the tank, al.lowances Eor other identified needs, and an allowance Eor possible instrument error. In addition, Eor human factors purposes, che percent indicated levels were chen raised to either the next whole percent or the next even percent and the gallon figures rounded off. This makes the LCO values conservative co the analyzed val.ues. s eci 'ed rc t e n g o The limits on contained wacer volume and boron concentration of the RWST also ensure a pH value of between 8.5 and 11.0 Eor the solution recircuLated within containment after a LOCA. This pH band minimizes the evolution oE iodine and minimizes the eEfect of chloride and caustic stress corrosion on mechanical systems and components.

The BAT minimum temperature of.65'F ensures that boron solubilicy is maintained Eor concentrations of at least the 7750 ppm l.imit. The RWST minimum temperature is consistent with the STS value and is based upon other considerations since soLubility is noc an issue at the specified concentration Level.s. The RWST high temperature was selected to be consistent with analytical assumptions Eor containment heat Load.

The OPERABILITY of one Boron Injection System during REFUELING ensures'hat this system is availabLe Eor reactivity concrol while in NODE 6.

3/4.1.3 'HOVABI.E CONTROL ASSEHBLIES The specifications of this section ensure that: (1) acceptabLe power distri-bution Limits are maintained, (2) the minimum SHUTDOWN MARGIN is maintained, and (3) the potential efEects of rod misalignment on associated accident analyses are limited. OPERABILITY of the control rod position indicators is required to determine controL rod positions and thereby ensure compliance with the control. rod alignment and insertion Limits'HEARON HARRIS - UNIT 1 B 3/4 1-3 Amendment No.M

REACTIVITY CONTROL EMS BORATED WATER SOURCE - SHUTDOWN LIMITING CONDITION FOR OPERATION 3.1.2.5 As a minimum, one of the following borated water sources shall be OPERABLE:

a0 The boric acid tank with:

A minimum contained borated water volume of 6650 gallons which is ensured by maintaining indicated level of greater than or equal to 21%,

2. A boron concentration of between 7000 and 7750 ppm, and

3. A minimum solution temperature of 65'F.

b. The refueling water storage tank (RWST) with:

A minimum contained borated water volume of 106,000 gallons, which is equivalent to 12% indicated level, 2~ A boron concentration of between 2400 and 2600 ppm, and

3. A minimum solution temperature of 40'F.

APPLICABILITY: MODES 5 and 6.

ACTION:

With 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 b'e demonstrated OPERABLE

a0 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 tank solution temperature is the source of borated water.

when it

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 RWST temperature when it is the source of borated water and the outside air temperature is less than 40'F.

SHEARON HARRIS UNIT 1 3/4 1-11 Amendment No.

REACTIVITY CONTROL TEMS

.BORATED WATER SOURCES - OPERATING LIMITING CONDITION FOR OPERATION 3.1.2.6 As a minimum, the following borated water source(s) shall be OPERABLE as required by Specification 3.1.2.2:

a. The boric acid tank with:

A minimum contained borated water volume of 24,150 gallons, which is ensured by maintaining indicated level of greater than or equal to 74%,

2 ~ A boron concentration of between 7000 and 7750 ppm, and 3 ~ A minimum solution temperature of 65'F.

b. The refueling water storage tank (RWST) with:

1~ A minimum contained borated water volume of 436,000 gallons, which is equivalent to 92% indicated level.

2~ A boron concentration of between 2400 and 2600 ppm, 3 ~ A minimum solution temperature of 40'F, and

4. A maximum solution temperature of 125'F.

APPLICABILITY: MODES 1, 2, 3, and 4.

ACTION With the boric acid tank inoperable and being used as one of the above required borated water sources, restore the boric acid tank to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and borated to a SHUTDOWN MARGIN as required by Figure 3.1-1 at 200'F; restore the boric acid tank to OPERABLE status within the next 7 days or be in COLD SHUTDOWN within the next 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

b. With the RWST inoperable, restore the tank to OPERABLE status within 1 hour or be in at least HOT STANDBY within the next 6 hours and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

SHEARON HARRIS UNIT 1" 3/4 1-12 Amendment No.

~y REACTIVITY CONTROL S EMS BASES BORATION SYSTEMS Continued from full power equilibrium xenon conditions and requires 24,150 gallons of 7000 ppm borated water be maintained in the boric aci.d storage tanks or 436,000 gallons of 2400-2600 ppm borated water be maintained in the refueling water storage tank (RWST).

With the RCS temperature below 350'F, one boron injection flow path is accept-able without single failure consideration on the basis of the stable reactivity SHEARON HARRIS - UNIT 1 B 3/4 1-2a Amendment No.

4 N

t Kgb

~ '

'EACTIVITY CONTROL EMS BASES BORATION SYSTEMS Continued condition of the reactor and the additional restrictions prohibiting CORE ALTERATIONS and positive reactivity changes in the event the single boron injection flow path becomes inoperable.

The limitation for a maximum of one charging/safety injection pump (CSIP) to be OPERABLE and the Surveillance Requirement to verify all CSIPs except the required OPERABLE pump to be inoperable below 325'F provides assurance that a mass addition pressure transient can be relieved by the operation of a single PORV.

The boron capability required below 200'F is sufficient to provide the required SHUTDOWN MARGIN as defined by Specification 3/4.1.1.2 after xenon decay and cooldown from 200'F to 140'F. This condition requires either 6650 gallons of 7000 ppm borated water be maintained in the boric acid storage tanks or 106,000 gallons of 2400-2600 ppm borated water be maintained in the RWST.

The gallons given above are the amounts that need to be maintained in the tank in the various circumstances. To get the specified indicated levels used for surveillance testing, each value had added to it an allowance for the unusable volume of water in the tank, allowances for other identified needs, and an allowance for possible instrument error. Zn addition, for human factors purposes, the percent indicated levels were then raised to either the next whole percent or the next even percent and the gallon figures rounded off.

This makes the LCO values conservative to the analyzed values.

The limits on contained water volume and boron concentration of the RWST also ensure a pH value of between 8.5 and 11.0 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.

The BAT minimum temperature of 65'F ensures that boron solubility is maintained for concentrations of at least the 7750 ppm limit. The RWST minimum temperature is consistent with the STS value and is based upon. other considerations since solubility is not an issue at the specified concentration levels. The RWST high temperature was selected to be consistent with analytical assumptions for containment heat load.

The OPERABILITY of one Boron Injection System during REFUELING ensures that this system is available for reactivity control while in MODE 6.

3 4.1.3 MOVABLE CONTROL ASSEMBLIES The specifications of this section ensure that: (1) acceptable power distri-bution limits are maintained, (2) the minimum SHUTDOWN MARGIN is maintainedg and (3) the potential effects of rod misalignment on associated accident analyses are limited. OPERABILITY of the control rod position indicators is required to determine control rod positions and thereby ensure compliance with the control rod alignment and insertion limits.

SHEARON HARRIS UNZT 1 B 3/4 1-3 Amendment No.