ML18039A660

Proposed Tech Specs,Revising pressure-temp Curves to Extend Validity of Curves to 32 EFPY

ML18039A660
Person / Time
Site:	Browns Ferry
Issue date:	12/15/1998
From:	TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML18039A659	List: ML18039A658 ML18039A660
References
NUDOCS 9812240164
Download: ML18039A660 (14)

Text

ENCLOSURE 3 TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT (BFN)

Units 2 and 3 PROPOSED IMPROVED TECHNICAL SPECI FICATION CHANGE TS 393 I SUPPLEMENT 1 RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION MARKED PAGE S I. AFFECTED PAGE LIST Unit 2 Page 3.4-29 Unit 3 Page 3.4-29 II. REVISED PAGES See attached.

98i2240i64 98i2i5 ~I PDR ADOCK 05000260 P PDR j

RCS P/T Limits 3.4.9 I=/a~

] l-/K /-0/MMMM@ PAg~

1600 BROWNS FERRY Curve No 1 1500 U Minimum temperature for pressure tests such as required by Section XI.

1300 Curve No 2 c3 1200 Minimum temperature for mechanical heatup or 1100 cooldowh following nuclear shutdown.

1000

~

wsoo Curve No. 3 Minimum temperature for 500 core operation '(criticality).

I-O 700 Notes 800 These curves include sufficient margin to provide 500 protection against feedwater nozzle degradation. The curves 312 PSIG allow for shifts in RTNOT of 3OO the Reactor vessel beltline materials, in accordance 200 CURVES 1,2, 8 3 ARE VAUD FOR with Reg. Guide 1.99 FPY OF OPERATION Rev. 2 to compensate for 100 radiation embrittlement for 0

FPY.

0 50 100 150 200 250 300 350 400 MIQMUM REACTORVESSEL MEfALTEMPERATURE('F)

Figure 3.4.9-1 Pressure/Temperature Limits BFN-UNIT2 3.4-29 Amendment No. 253

II

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{ l 1

1

1600 BROWNS FERRY UNIT 2 1500 1400 1300 1200 o 1100

~1000 O

I g coo 0

CC g 800 z 7oo 600 C

D N 600 400 300 200 100 0 60 100 160 200 250 300 360 400 MINIMUMREACTOR VESSEL METALTEMPERATURE ('F)

RCS P/T Limits 3.4.9

/~~~7- ~lc H Q~RP~S HEem i I+K-. Im/ L OMz~+ Qgg 1600 FERRY Curve No. 1 15M U 3 Minimum temperature for pressure tests such as 14M required by Section XI.

ZZ> 1300 Curve No. 2 D 1200 Minimum temperature for mechanical heatup or 1100 cooldown following nuclear 0

I-CO 1000 70'ROWNS shutdown.

Li 900 Curve No. 3 Minimum temperature for iL'-

800 core operation (criticality).

O 700 IL'00 Notes I- These curves include sufficient margin to provide 500 protection against ILJ feedwater nozzle 400 degradation. The curves C0 312 PS allow for shifts in RTNOT of 3OO the Reactor vessel beltline materials, in accordance 200 CURVES 1, 2, K 3 ARE VAUD FOR with Reg. Guide 1.99 E Y OF OPERATION Rev. 2 to compensate for 100 BOL radiation embrittlement for FPY.

0 50 100 150 200 250 300 350 400 MIMMUMREAGTQRYESSEL MEl'ALTEMPERATURE('Fi Figure 3.4.9-1 Pressure/Temperature Limits BFN-UNIT 3 3.4-29 Amendment No. 212

II I

/

I

1600 BROWNS FERRY UNIT 3 1500 1400 1300 1200 o 1<<0 O 1000 g

W 900 OC g 800 O

700 I

600 D

i cn 600 400 300 200 100 0 60 100 150 200 260 300 350 400 MINIMUMREACTOR VESSEL METALTEMPERATURE (4F)

I' ENCLOSURE 4 TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT (BFN)

Units 2, and 3 PROPOSED IMPROVED I II I TECHN CAL SPEC F CAT ON CHANGE TS 393 I SUPPLEMENT 1 REVISED PAGES I. AFFECTED PAGE LIST Unit 2 Page 3.4-29 Unit 3 Page 3.4-29 II. REVISED PAGES See attached.

~,

RCS P/T Limits 3.4.9 1600 Curve No. 1 BROWNS FERRY UNIT 2 Minimum temperature for pressure 1500 tests such as required by Section 1 2 3 XI.

1400 Curve No. 2 Minimum temperature for 1300 mechanical heatup or cooldown following nuclear shutdown.

1200 Curve No. 3 1100 Minimum temperature for core operation (criticality).

1000 Notes 900 These curves include sufficient margin to provide protection against feedwater nozzle soo degradation. The curves allow for shifts in RTrior of the Reactor 700 vessel beltline materials, in C accordance with Reg. Guide 1.99, 600 Rev. 2, to compensate for radiation embrittlement for 16 500 EFPY.

P 4oo 312 PSI 300 200 CURVES1,2, & 3ARE 100 BOLTUP VALIDFOR 16 EFPY OF 82'F OPERATION 0 50 100 150 200 250 300 350 400 Minimum Reactor Vessel Metal Temperature ('F)

Figure 3.4.9-1 Pressure/Temperature Limits BFN-UNIT 2 3.4-29

RCS P/T Limits 3.4.9 1600 Curve No. 1 BROWNS FERRY UNIT 3 Minimum temperature for pressure 1500 1 2 3 tests such as required by Section XI.

1400 Curve No. 2 1300 Minimum temperature for mechanical heatup or coo!down following nuclear shutdown.

1200 Curve No. 3 1100 Minimum temperature for core operation (criticality).

4i 1000 Notes 0

600 These curves include sufficient margin to provide protection against feedwater nozzle 800 degradation. The curves allow for shifts in RTNpT of the Reactor 700 vessel beltiine materials, in accordance with Reg. Guide 1.99, 600 Rev. 2, to compensate for radiation embrittlement for 20 EFPY.

g 500 o

400 312 PS 300 200 CURVES 1,2, & 3ARE 6OLTUP VALIDFOR 20 EFPY OF 100 OPERATION 70'F 0 50 100 150 200 250 300 350 400 Minimum Reactor Vessel Metal Temperature ('FI Figure 3.4.9-1 Pressure/Temperature Limits BFN-UNIT 3 3.4-29 Amendment No. 212

0 0