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 1500 BROWNS FERRY U Curve No 1 Minimum temperature for pressure tests such as required by Section XI.1300 c3 1200 1100 1000~wsoo 500 O I-700 800 500 3OO 200 100 0 0 312 PSIG CURVES 1,2, 8 3 ARE VAUD FOR FPY OF OPERATION 50 100 150 200 250 300 350 400 MIQMUM REACTORVESSEL MEfAL TEMPERATURE('F)

Curve No 2 Minimum temperature for mechanical heatup or cooldowh following nuclear shutdown.Curve No.3 Minimum temperature for core operation'(criticality).

Notes These curves include sufficient margin to provide protection against feedwater nozzle degradation.

The curves allow for shifts in RTNOT of the Reactor vessel beltline materials, in accordance with Reg.Guide 1.99 Rev.2 to compensate for radiation embrittlement for FPY.Figure 3.4.9-1 Pressure/Temperature Limits BFN-UNIT 2 3.4-29 Amendment No.253

• I{II l 1 1 1600 1500 BROWNS FERRY UNIT 2 1400 1300 1200 o 1100 O~1000 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 MINIMUM REACTOR VESSEL METAL TEMPERATURE

('F)

RCS P/T Limits 3.4.9/~~~7-~lc H Q~RP~S HEem i I+K-.Im/L OMz~+Qgg 1600 15M 14M ZZ>1300 D 1200 1100 0 I-1000 CO Li 900 800 iL'-O 700 IL'00 I-500 ILJ 400 C0 3OO 200 100 312 PS BOL 70'ROWNS FERRY U 3 CURVES 1, 2, K 3 ARE VAUD FOR E Y OF OPERATION Curve No.1 Minimum temperature for pressure tests such as required by Section XI.Curve No.2 Minimum temperature for mechanical heatup or cooldown following nuclear shutdown.Curve No.3 Minimum temperature for core operation (criticality).

Notes These curves include sufficient margin to provide protection against feedwater nozzle degradation.

The curves allow for shifts in RTNOT of the Reactor vessel beltline materials, in accordance with Reg.Guide 1.99 Rev.2 to compensate for radiation embrittlement for FPY.0 50 100 150 200 250 300 350 400 MIMMUM REAGTQRYESSEL MEl'AL TEMPERATURE('Fi Figure 3.4.9-1 Pressure/Temperature Limits BFN-UNIT 3 3.4-29 Amendment No.212 II I/I 1600 1500 BROWNS FERRY UNIT 3 1400 1300 1200 o 1<<0 O 1000 g 900 W OC g 800 O 700 I 600 D cn 600 i 400 300 200 100 0 60 100 150 200 260 300 350 400 MINIMUM REACTOR VESSEL METAL TEMPERATURE (4F)

I' ENCLOSURE 4 TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT (BFN)Units 2, and 3 PROPOSED I MPROVED TECHN I CAL SPEC I F I CAT I 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 1500 1400 1300 1200 1100 1000 900 soo 700 C 600 500 P 4oo 300 312 PSI BROWNS FERRY UNIT 2 1 2 3 Curve No.1 Minimum temperature for pressure tests such as required by Section XI.Curve No.2 Minimum temperature for mechanical heatup or cooldown following nuclear shutdown.Curve No.3 Minimum temperature for core operation (criticality).

Notes These curves include sufficient margin to provide protection against feedwater nozzle degradation.

The curves allow for shifts in RTrior of the Reactor vessel beltline materials, in accordance with Reg.Guide 1.99, Rev.2, to compensate for radiation embrittlement for 16 EFPY.200 100 BOLTUP 82'F CURVES1,2,&3ARE VALID FOR 16 EFPY OF 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 1500 1400 1300 1200 1100 4i 1000 0 600 800 700 600 g 500 o 400 300 312 PS BROWNS FERRY UNIT 3 1 2 3 Curve No.1 Minimum temperature for pressure tests such as required by Section XI.Curve No.2 Minimum temperature for mechanical heatup or coo!down following nuclear shutdown.Curve No.3 Minimum temperature for core operation (criticality).

Notes These curves include sufficient margin to provide protection against feedwater nozzle degradation.

The curves allow for shifts in RTNpT of the Reactor vessel beltiine materials, in accordance with Reg.Guide 1.99, Rev.2, to compensate for radiation embrittlement for 20 EFPY.200 100 6OLTUP 70'F CURVES 1,2,&3ARE VALID FOR 20 EFPY OF OPERATION 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