ML070570519

Technical Specifications, Issuance of Amendment No. 270 Remove Reactor Coolant System Structural Integrity Requirements

ML070570519
Person / Time
Site:	Arkansas Nuclear
Issue date:	03/01/2007
From:	NRC/NRR/ADRO/DORL/LPLIV
To:
Saba F, NRR/DORL/LPL4, 301-415-1447
Shared Package
ML070570502	List: ML070570506 ML070570519
References
TAC MD0700
Download: ML070570519 (4)

Text

SURVEILLANCE REQUIREMENTS 4.4.9'.1.1 The Reactor Coolant System temperature and pressure shall be determined to be within the limits at least once per 30 minutes during system heatup, cooldown, and inservice leak and hydrostatic testing operations.

4.4.9.1.2 The reactor vessel material irradiation surveillance specimens shall be removed and examined, to determine changes in material properties, at the intervals shown in SAR Table 5.2-12. The results of these examinations shall be used to update Figures 3.4-2A, 3.4-2B and 3.4-2C.

ARKANSAS - UNIT 2 3/4 4-23 Amendment No. 424,21-3,,270 I

2500 2000 CL U)

I-1500 1000 Figure 3.4-2A HEATUP CURVE - 32 EFPY REACTOR COOLANT SYSTEM PRESS URE/TEMPERATURE LIMITS 50 F/hr; Non-Critical Core iJ

~~60 F/hr Non-Critical Corereor 70 F/hr Non-Critical Core

?"ý'

80 F/hrI I /Non-Critical Core I II 80 F/hrFh Critical Core

/I /

I1Acceptable r)

Region

--Lowest Serv~ice Temperature, I- ~

itcality Limit =190 F IMinimum Boltup "Temperat ure, 50 F 500 0

0 100 200 300 400 500 Reactor Coolant Temperature T., OF (Curves do not include margins for instrument uncertainties)

ARKANSAS - UNIT 2 3/4 4-24 Amendment No. 1-24,242, 270

Figure 3.4-2B COOLDOWN CURVE - 32 EFPY REACTOR COOLANT SYSTEM PRESSURE/TEMPERATURE LIMITS 2500 i

i " i

! 1 ;

I

......I I

..I I I

..I

. I.I 2000 1500 LI N

A 1000 0.

11 Il I

1 I M 1 1 Acceptable Re io Lowest Service Ternperature, 150 F I,

I I

500 TMinimum Boltup Temperature, 50 F I'

I 0

I' I

0 100 200 300 400 500 Reactor Coolant Temperature T,, `F.

(Curves do not include margins for Instrument uncertainties)

ARKANSAS - UNIT 2 3/4 4-25 Amendment No. 4-24,242,25f, 270 I

2500 2000 CL 1500 U*,

CL N

= 1000 U)

U,CL Figure 3.4-2C INSERVICE HYDROSTATIC TEST CURVE - 32 EFPY REACTOR COOLANT SYSTEM PRESSURE/TEMPERATURE LIMITS Inservice L

~Hydrostatic, i

! ~Test F

I Acceptable Region

-Lowest Service H

l 1 11 Temperature,

- 150 F i

i i i

i

ý i iI I I I I I

I I

I I

i i i

[

i i

I..!-*N..............I....I.....l i iI

[

i I

I I1 I

500 Minimum Boltup Temperature, 50 F I

0 0

100 200 300 400 500 Reactor Coolant Temperature T., °F (Curves do not Include margins for Instrument uncertainties)

ARKANSAS - UNIT 2

-3/4 4-26 Amendment No. 424,242,2-53, 270