ML18037A482

Proposed Tech Specs Re Spent Fuel Pool Water Level,Temp & Sampling & Analysis SRs

ML18037A482
Person / Time
Site:	Browns Ferry
Issue date:	09/30/1993
From:	TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML18037A481	List: ML18037A480 ML18037A482
References
NUDOCS 9310040403
Download: ML18037A482 (20)

Text

ENCLOSURE 1 PROPOSED TECHNICAL SPECIFICATION CHANGE BROWNS FERRY NUCLEAR PLANT UNITS 1, 2,

AND 3 (TVA BFN TECHNICAL SPECIFICATION AMENDMENT 336) 9310040403 930'930 PDR ADOCK 05000259 P.

PDR

1E

TECHNICAL SPECIFICATION 336 Effective Page Listing Unit 1 3.10/4.10-7 Unit 2 3.10/4.10-7 Unit 3 3.10/4.10-7

PROPOSED TECHNICAL SPECIFICATION CHANGE BROWNS FERRY NUCLEAR PLANT UNIT 1 (TVA BFN TECHNICAL SPECIFICATION AMENDMENT 336)

CO 0

S CO I IO S

FOR OPE IOH SURVEILLA CE RE UIREME S

3.10.C S ent Fuel Pool Water 4.10.C S ent Fuel Pool Water Whenever irradiated fuel is stored in the spent fuel pool, the pool water level shall be maintained at a depth of 8-1/2 feet or greater above the top of the spent fuel.

A minimum of 6-1/2 feet of water shall be maintained over single irradiated fuel assemblies during transfer and handling operations.

Whenever irradiated fuel is stored in the spent fuel pool, the water level shall be verified to be above the low level alarm setpoint or the water level shall be measured.

This action shall be taken daily and recorded.

2.

Whenever irradiated fuel is in the fuel pool, the pool water temperature shall be 5150 F.

2.

Whenever irradiated fuel is stored in the spent fuel pool, the temperature shall be measured and recorded daily.

3.

Fuel pool water shall be maintained within the following limits:

conductivity g 10 thos/cm at 25'C 3.

A sample of fuel pool water shall be analyzed for conductivity and chloride content:

a.

Daily, or chlorides g 0.5 ppm b.

Once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> when the fuel pool cleanup system is inoperable.

BFN Unit 1 3.10/4.10-7

PROPOSED TECHNICAL SPECIFICATION CHANGE BROMNS FERRY NUCLEAR PLANT UNIT 2 (TVA BFN TECHNICAL SPECIFICATION AMENDMENT 336)

4 CORE ALTERATIONS L I I G CO ITIONS FOR OPERATIO 3.10.C S ent Fuel Pool Mater SURVEILLANCE RE UIREME S

4.10.C S ent Fuel Pool Mater 1.

Whenever irradiated fuel is stored in the spent fuel pool,'the pool water level shall be maintained at a depth of 8-1/2 feet or greater above the top of the spent fuel.

A minimum of 6-1/2 feet of water shall be maintained-over single irradiated fuel assemblies during transfer and handling operations.

1.

Whenever irradiated fuel is stored in the spent fuel pool, the water level shall be verified to be above the low level alarm setpoint or the water level shall be measured.

This action shall be taken daily and recorded.

2.

Whenever irradiated fuel is in the fuel pool, the pool water temperature shall be 5150'.

2.

Whenever irradiated fuel is stored in the spent fuel pool, the temperature shall be measured and recorded daily.

3.

Fuel pool water shall be maintained within the following limits:

conductivity g 10 pmhos/cm at 25'C 3.

A sample of. fuel pool water shall be analyzed for conductivity and chloride content:

a.

Daily, or chlorides g 0.5 ppm b.

Once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> when the fuel pool cleanup system is inoperable.

BFN Unit 2 3.10/4.10-7

PROPOSED TECHNICAL SPECIFICATION CHANGE BROMNS FERRY NUCLEAR PLANT UNIT 3 (TVA BFN TECHNICAL SPECIFICATION AMENDMENT 336)

4 CORE TERATIONS G

CO TIO S

0 OPE TIO 3.10.C S ent Fuel Pool Water URVE LLA CE RE UI EME S

4.10.C S ent Fuel Pool Water Whenever irradiated fuel is stored in the spent fuel pool, the pool water level shall be maintained at a depth of 8-1/2 feet or greater above the top of the spent fuel.

A minimum of 6-1/2 feet of water shall be maintained over single irradiated fuel assemblies during transfer and handling operations.

Whenever irradiated fuel is stored in the spent fuel pool, the water level shall be verified to be above the low level alarm setpoint or the water level shall be measured.

This action shall be taken daily and recorded.

2 ~

Whenever irradiated fuel is in the fuel pool, the pool water temperature shall be g150 F.

2.

Whenever irradiated fuel is stored in the spent fuel pool, the temperature shall be measured and recorded daily.

3.

Fuel pool water shall be maintained within the following limits:

conductivity g 10 thos/cm at 25 C

3.

A sample of fuel pool water shall be analyzed for conductivity and chloride content:

a.

Daily, or chlorides g 0.5 ppm b.

Once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> when the fuel pool cleanup system is inoperable.

BFN Unit 3 3.10/4.10-7

ENCLOSURE 2

BROWNS FERRY NUCLEAR PLANT (BFN)

UNITS 1, 2, AND 3 (TVA BFN TECHNICAL SPECIFICATION AMENDMENT 336)

REASON FOR THE CHANGE DESCRIPTION AND JUSTIFICATION REASON FOR THE CHANGE These changes are proposed for the following reasons:

1) The spent fuel pool water level Surveillance Requirement is being revised to:

A) explicitly describe the method currently used to verify fuel pool water level, and B) provide an alternate method for verifying fuel pool water level in order to allow maintenance on the primary fuel pool water level instrumentation.

2) The spent fuel pool water temperature Surveillance Requirement is being revised to:

A) produce a numerical correspondence between the spent fuel pool water temperature Limiting Conditions for Operation and its corresponding Surveillance Requirement, and B) clarify the wording associated with the spent fuel pool water temperature Surveillance Requirement.

3) The spent fuel pool water sampling and analysis Surveillance Requirement is being revised to:

A) provide a numerical correspondence between the spent fuel pool water sampling and analysis Limiting Conditions for Operation and its corresponding Surveillance Requirement, and B) clarify the wording associated with the spent fuel pool water sampling and analysis Surveillance Requirements.

Page 2 oS 4

ENCLOSURE 2

(CONTINUED)

BROMNS FERRY NUCLEAR PLANT (BFN)

REASON FOR THE CHANGE DESCRIPTION AND JUSTIFICATION DESC IPTION OF THE PROPOSED CHANGE

1) Proposed change to spent fuel pool water Surveillance Requirement 4.10.C.1:

Existing Technical Specifications:

"Whenever irradiated fuel is stored in the spent fuel pool, the water level... shall be recorded daily."

Proposed Technical Specifications:

Whenever irradiated fuel is stored in the spent fuel pool, the water level shall be verified to be above the low level alarm setpoint or the water level shall be measured.

This action shall be taken daily and recorded.

2) Proposed change to spent fuel pool water Surveillance Requirement 4.10.C.1:

Existing Technical Specification 4.10.C.1:

"Whenever irradiated fuel is stored in the spent fuel pool, the

. temperature shall be recorded daily."

Proposed Technical Specification 4.10.C.2:

Whenever irradiated fuel is stored in the spent fuel pool, the temperature shall be measured and recorded daily.

Note that the existing spent fuel pool water Surveillance Requirement 4.10.C.2 is being renumbered to 4.10.C.3 and revised and described below.

Page 3 oS 4

ENCLOSURE 2 (CONTINUED)

BROWNS FERRY NUCLEAR PLANT (BFN)

REASON FOR THE CHANGE DESCRIPTION AND JUSTIFICATION

3) Proposed change to spent fuel pool water sampling and analysis Surveillance Requirement 4.10.C.2:

Existing Technical Specification 4.10.C.2:

"A sample of fuel pool water shall be analyzed in accordance with the following specifications:

a. At least daily for conductivity and chloride ion content.

b. At least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> for conductivity and chloride content when the fuel pool cleanup system is INOPERABLE."

Proposed Technical Specification 4.10.C.3:

A sample of fuel pool water shall be analyzed for conductivity and chloride content:

a. Daily, or b.

Once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> when the fuel pool cleanup system is inoperable.

JUSTIFICATION FOR THE PROPOSED CHANGE

1) The revision to the spent fuel pool water level Surveillance Requirement more accurately describes the methods currently used to verify fuel pool water level.

Hence, the operator's ability to properly interpret the Surveillance Requirement is enhanced.

2) The revision to the spent fuel pool water temperature Surveillance Requirement produces a numerical correspondence between the Surveillance Requirement and its associated Limiting Condition for Operation.

In addition, the revised wording more accurately describes the spent fuel pool water temperature Surveillance Requirement.

Page 4 oi' ENCLOSURE 2 (CONTINUED)

BROWNS FERRY NUCLEAR PLANT (BFN)

'REASON FOR THE CHANGE DESCRIPTION AND JUSTIFICATION 3)

The revision to the spent fuel pool water sampling and analysis Surveillance Requirement produces a numerical correspondence between the Surveillance Requirement and its associated Limiting Condition for Operation.

ENCLOSURE 3 BROMNS FERRY NUCLEAR PLANT (BFN)

PROPOSED NO SIGNIFICANT HAZARDS CONSIDERATIONS DETERMINATION DESC IPTION OF THE P OPOSED TECHNICAL SPECIFICATION CHANGE 1)

The spent fuel pool water level Surveillance Requirement is being revised to more clearly describe the method currently used to verify the water level and to provide for an alternate method for verifying water level in order to allow maintenance on the primary level instrumentation.

2)

The spent fuel pool water temperature Surveillance Requirement is being revised to produce a numerical correspondence between the Surveillance Requirement and its associated Limiting Condition for Operation and clarify the wording associated with the spent fuel pool water temperature Surveillance Requirement.

3)

The spent fuel pool water sampling and analysis Surveillance Requirement is being revised to produce a numerical correspondence between the Surveillance Requirement and its associated Limiting Condition for Operation and clarify the wording associated with the spent fuel pool water sampling and analysis Surveillance Requirement.

BASES FOR PROPOSED NO SIGNIFICANT HAZARDS CONSIDERATION DETERMINATION NRC has provided standards for determining whether a significant hazards consideration exists as stated in 10 CFR 50.92(c).

A proposed amendment to an operating license involves no significant hazards considerations if operation of the facility in accordance with the proposed amendment would not (1) involve a significant increase in the probability or consequences of an accident previously evaluated, or (2) create the possibility of a new or different kind of accident from an accident previously evaluated, or (3) involve a significant reduction in a margin of safety.

The proposed TS change is judged to involve no significant hazards considerations based on the following:

Page 2 oS 3 ENCLOSURE 3

(CONTINUED)

BROWNS FERRY NUCLEAR PLANT (BFN)

PROPOSED NO SIGNIFICANT HAZARDS CONSIDERATIONS DETERMINATION 1.

The proposed amendment does not involve a significant increase in the probability or consequences of any accident previously evaluated.

The proposed revisions to the spent fuel pool water level, temperature, and sampling and analysis Surveillance Requirements do not change operations over the spent fuel pool or any other precursor to fuel damage in the spent fuel pool.

The proposed amendment does not reflect any significant change to any precursor for any other design basis events or operational transients that are analyzed in the Browns Ferry Final Safety Analysis Report.

Therefore, the probability of an accident previously evaluated is not significantly increased.

The proposed revisions to the spent fuel pool water level, temperature, and sampling and analysis Surveillance Requirements do not reflect the modification of equipment or change the operation of equipment used to mitigate the consequences of design basis events or operational transients analyzed in the Browns Ferry Final Safety Analysis Report.

Therefore, the proposed changes will not significantly increase the consequences of an accident previously evaluated.

2 ~

The proposed amendment does not create the possibility of a new or different kind of accident from any accident previously evaluated.

The proposed revisions to the spent fuel pool water level, temperature, and sampling and analysis Surveillance Requirements do not require new system alignments, modifications, or changes in operating procedures.

Therefore, no new external threats, system interactions, release

pathways, equipment failure modes, or types of operator errors are created.

Thus, the proposed amendment does not create the possibility of a new or different kind of accident from any accident previously evaluated.

Page 3 of 3 ENCLOSURE 3

(CONTINUED)

BROWNS FERRY NUCLEAR PLANT (BFN)

PROPOSED NO SIGNIFICANT HAZARDS CONSIDERATIONS DETERMINATION 3 ~

The proposed amendment does not involve a significant reduction in the margin of safety.

The proposed revisions to the spent fuel pool water level, temperature, and sampling and analysis Surveillance Requirements do not change the licensing or design basis limits for the spent fuel pool water level, temperature, or chemical composition.

Therefore, the proposed amendment does not involve a significant reduction in the margin of safety.

CONCLUSION TVA has evaluated the proposed amendment described above against the criteria given in 10 CFR 50.92(c) in accordance with the requirements of 10 CFR 50.91(a)(l).

This evaluation has determined that the proposed amendment will not (1) involve a significant increase in the probability or consequences of an accident previously evaluated, (2) create the possibility for a new or different kind of accident from any accident previously evaluated, or (3) involve a significant reduction in a margin of safety.

Thus, TVA has concluded that the proposed amendment does not involve a significant hazards consideration.

'I W