ML040750194

Brown Ferry, Unit 3, Technical Specifications, Revising Pressure Temperature Limit Curves

ML040750194
Person / Time
Site:	Browns Ferry
Issue date:	03/10/2004
From:	NRC/NRR/DLPM
To:
Jabbour K, NRR/DLPM, 415-1496
Shared Package
ML040750002	List: ML040750188 ML040750194
References
TAC MC0807, TAC MC0808
Download: ML040750194 (6)

Text

RCS P/T Limits 3.4.9 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.4.9.1 --- NOTES-------------- --------

1. Only required to be performed during RCS heatup and cooldown operations or RCS inservice leak and hydrostatic testing when the vessel pressure is > 312 psig.

2. The limits of Figure 3.4.9-2 may be applied during nonnuclear heatup and ambient loss cooldown associated with inservice leak and hydrostatic testing provided that the heatup and cooldown rates are < 150 F/hour.

3. The limits of Figures 3.4.9-1 and 3.4.9-2 do not apply when the tension from the reactor head flange bolting studs is removed.

Verify: 30 minutes

a. RCS pressure and RCS temperature are within the limits specified by Curves No. 1 and No. 2 of Figures 3.4.9-1 and 3.4.9-2; and

b. RCS heatup and cooldown rates are

< 100F in any 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> period.

SR 3.4.9.2 Verify RCS pressure and RCS temperature Once within 15 are within the criticality limits specified in minutes prior to Figure 3.4.9-1, Curve No. 3. control rod withdrawal for the purpose of achieving criticality (continued)

BFN-UNIT 3 3.4-26 Amendment No.-242, 247

RCS P/T Limits 3.4.9 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.4.9.5 ------------------------- I-NOTES-

1. Only required to be performed when tensioning the reactor vessel head bolting studs.

2. The reactor vessel head bolts may be partially tensioned (four sequences of the seating pass) provided the studs and flange materials are > 701F.

Verify reactor vessel flange and head flange 30 minutes temperatures are > 83 0F.

SR 3.4.9.6 --------------------------NOTE-------------------------

Not required to be performed until 30 minutes after RCS temperature < 850 F in MODE 4.

Verify reactor vessel flange and head flange 30 minutes temperatures are > 83 0F.

SR 3.4.9.7 ------------------------- NOTE-------------------------

Not required to be performed until 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> after RCS temperature < 1000 F in MODE 4.

Verify reactor vessel flange and head flange 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> temperatures are > 83 0F.

BFN-UNIT 3 3.4-28 Amendment No.-242- 247

RCS P/T Limits 3.4.9 150 0 Curve No. 1 1400 Minimum temperature for bottom head during

-- BROWNS FERRY UNIT 3 __

mechanical heatup or CURVES 1, 2. AND 3 1300 ARE VALID FOR 20 EFPY cooldown following nuclear OF OPERATION shutdown.

120 0 n

Curve No. 2 Minimum temperature for

• 110 0 upper RPV and beltline during mechanical heatup or 0 100 0 cooldown following nuclear ro 0

shutdown.

i 900 Curve No. 3 Minimum temperature for core R 800 operation (criticality).

0 H

U 700 Notes These curves include sufficient margin to provide 4 600 protection against feedwater nozzle degradation. The 500 curves allow for shifts in RTNDT of the Reactor vessel beltline 400 materials, in accordance with Reg. Guide 1.99, Rev. 2, to compensate for radiation 300 embrittlement for 20 EFPY.

The acceptable area for 200 BOTTOM--

HEAD 68oF i~ -

operation is to the right of the applicable curves.

100 FLANGE-REGION 83 F 0

0 50 100 150 200 250 300 MINIMUM REACTOR VESSEL MrALTEMERATURE (OF)

Figure 3.4.9-1 Pressure/Temperature Limits for Mechanical Heatup, Cooldown following Shutdown, and Reactor Critical Operations BFN-UNIT 3 3.4-29 Amendment No.-217, 233, 247

RCS P/T Limits 3.4.9 1400 Curve No. 1 Minimum temperature for bottom head during in-service 1300 leak or hydrostatic testing.

BROWNS FERRY UNIT 3

-CURVES 1 AND 2 ARE -_

VALID FOR 20 EFPY OF Curve No. 2 1200 -OPERATION __1____I Minimum temperature for upper RPV and beltline during in-c: 1100 service leak or hydrostatic testing.

P 1000 Notes 0 900 These curves include sufficient margin to provide protection (n 800 against feedwater nozzle degradation. The curves allow for shifts in RTNDT of the o 700 Reactor vessel beltline U materials, in accordance with Reg. Guide 1.99, Rev. 2, to M 600 compensate for radiation embrittlement for 20 EFPY.

t 500 The acceptable area for operation is to the right of the 9 400 applicable curves.

cn 9 300 BOTTOM 200 HE- FLANGE 68.F IREGION 830 F 100 0

0 50 100 150 200 MINIMUMREACTORVESSELMETALTEMPEAIhRE (OF)

Figure 3.4.9-2 Pressure/Temperature Limits for Reactor In-Service Leak and Hydrostatic Testing BFN-UNIT 3 3.4-29a Amendment No. 247

RCS P/T Limits 3.4.9 Curve No. 1 1500 Minimum temperature for 1400 _

_ 1 BROWNS FERRY'UNIT

_H171

__ t 1 3

-_ _ _ tl_

2 3

__bottom head during mechanical heatup or cooldown following

_-BURVES 1, 2, AND 3 _ _ _- _ _ _ _ - nuclear shutdown.

ARE VALID FOR 28 _ _ _ _ _

1300 EFPY OF OPERATION Curve No. 2

_- _Minimum temperature for upper 1200 - - - - RPVand beltlineduring

- _ _mechanical heatupor 1100 cooldown following nuclear

_ I Ishutdown.

1000 *--Curve No. 3

!- _ _ Minimum temperature forcore 900 I Ioperation -- (criticality).

Notes 800 7 These curves include sufficient

-_ -- -- -_- _ _ __margin to provide protection 700 _ _against feedwater nozzle

_ - -__degradation. The curves allow for shifts in RTNDT of the 600 --- Reactor vessel beltline

_- -materials, in accordance with 500 _- - / _ _ -- _- _ __Reg. Guide 1.99, Rev. 2, to IIIcompensate for radiation 400 s embrittlement for 28 EFPY.

- Theacceptableareafor 300 - ~- - -~ operation is to the right of the

-- tapplicable curves.

200 BOTTOM 100 HEAD FLNGE 830 0

0 50 100 150 200 250 300 MINIMUM REACTOR VESSELMETALTEMPERATURE (°F)

Figure 3.4.9-1 Pressure/Temperature Limits for Mechanical Heatup, Cooldown following Shutdown, and Reactor Critical Operations BFN-UNIT 3 3.4-29b Amendment No.247

RCS P/T Limits 3.4.9 1400 I I I I I I

__ BROWNS FERRY UNIT 3 I n/ 1 IV Curve No. 1 Minimum temperature for 1300 _---CURVES 1 AND 2 ARE bottom head during in-service VALID FOR 28 EFPY leak or hydrostatic testing.

__OF OPERATION -2 1200 Curve No. 2 Minimum temperature for upper F 1100 RPV and beltline during in-Cn service leak or hydrostatic testing.

P 1000 o* 900 0

Notes W These curves include sufficient n 800 margin to provide protection against feedwater nozzle O 700 degradation. The curves allow E_

U for shifts in RTNDT of the Reactor vessel beltline 9 600 materials, in accordance with Z Reg. Guide 1.99, Rev. 2, to 500 compensate for radiation embrittlement for 28 EFPY.

9 400 The acceptable area for operation is to the right of the applicable curves.

r 300 200 BOTTOM --- -----

HEAD IFLANGE 100 68 0 F REGION t4lLLw..z 83 ,

0 0 50 100 150 200 MINM=UM REACTOR VESSEL MTAL TEMPERATURE(°F)

Figure 3.4.9-2 Pressure/Temperature Limits for Reactor In-Service Leak and Hydrostatic Testing BFN-UNIT 3 3.4-29c Amendment No. 247