ML20147D634

Proposed Tech Specs,Showing Increase in Nonbeltline Portions of Curves of Figures 3.6.1.a & 3.6.1.b

ML20147D634
Person / Time
Site:	Cooper
Issue date:	02/22/1988
From:	NEBRASKA PUBLIC POWER DISTRICT
To:
Shared Package
ML20147D629	List: ML20147D634 ML20147D670 NLS8800063, Forwards Responses to NRC 880113 Questions on Proposed Change 48 & Revised Tech Spec Pages 155 & 156 Showing Increase of 2 F in Nonbeltine Portions of Curves of Figures 3.6.1.a & 3.6.1.b.GE Rept NEDO-24793 Also Encl
References
NUDOCS 8803040076
Download: ML20147D634 (2)

Text

.

1600 I

I VAUD TO 12 EFPY B

1400 Adjusted Beltline ll4T FLAW, ART = 110*F 1200 r

1000 W.00 g

E sa

&w 600 SAFE OPERATING REGION 4( 0 NON-BELTLINE FW NOZZLE LIMITS, 1/4T FLAW, RTNOT

• 30'F 200

/

/

BOLT PRELOAD

/ Itfd!"*R?o"!;'

RTNDT = 20*F 0

O 100 200 300 MINtMUM VESSEL METAL TEMPERATURE l'F)

Figure 3.6.1.a Minimum Temperature for Non-Nuclear Heacup or Core Cooldown Following Nuclear Shutdown 8803040076 880222 ADOCK0500g8 155 DR w

1600 1

i.

VAUD TO 12 EFPY C

1400 t

Adjusted Beltline 1/4T FLAW. ART = 110*F 1200 1000 5

52 800 E

w a

600 NON-BELTLtNE SAFE FW NOZZLE LIMITS OPERATING PLUS 40*F,1/4T FLAW REGION 0

RTNDT"30 F 400 r

FLANGE REGION RTNOT = 20'F; MINIMUM PERMISSIBLE 200

• TEMPERATURE = 80*F PER 10CFR50 APPENDIX G O

O 100 200 300 MINIMUM VESSEL METAL TEMPERATURE (*F) l Figure 3.6.1.b Minimum Temperature for Core Operation (Criticality)

Includes 400F Margin Required by.10CFR50 Appendix G 156