ML20126L239

From kanterella
Jump to navigation Jump to search
Viewgraphs Entitled Westinghouse PWR Vessel Integrity & Consideration of Rancho Seco Occurrence (3/78)
ML20126L239
Person / Time
Site: Indian Point, Rancho Seco  Entergy icon.png
Issue date: 05/01/1981
From:
WESTINGHOUSE OPERATING PLANTS OWNERS GROUP
To:
Shared Package
ML20126L232 List:
References
NUDOCS 8106020092
Download: ML20126L239 (2)


Text

_ - _ _ _

ENCLOSURE 4 l

l 1

WSTliG00SE RIR VESSEL Il!TEGRITY I, NMLYSES PEV0PJB

.. LtSGE ST!Att LitlE EREAK

2. LARGE LCCA
3. Sf'Ad. LOCA II, LTILIZIlS IN RESULTS CF TESE NlALYSES TE FOLLO.!IlE STATEE!T CRl EE "iDE ALL PLAfrTS AP.E ACCEPTAELE THROUGH AT LEAST TrN Et0 0F 19S2 ABO BOST GPERATING Pl.AtlTS, IF NOT ALL CPERATING PLA!iTS, COULD SE DEFONSTPATED TO HAVE ACCEPTABLE LIFETIMES SIGNIFICANTLY IN EXCESS OF THE Et0 0F 1982, 0

l O

a np y ous eo 9^..-

- ENCLOSURE 5 C0tlSIDEPATI0ft OF THE PAtlCHO-SECO OCCUPECE G/78) e

l. -OPERATI0tML EVENTS SUCH AS EXCESSIVE FEEDWATER ADDITION IN WE PES DO NOT RESULT IN #N SIGNIFICATE THEF1'AL SHOCK C0fEERNS

. A !! PS HAS A LARGE SYSTEM THERI'AL INERTIA.

THE Parce-SECO OCCURREtEE IS AN EXAlfLE OF SUCH NJ EXCESSIVE FEEDWATEo, ADDITION EVENT.

II. IN A E PA tE PANCH0-SECO RCS PRESSURE FJ IEFFERATURE TRANSIE BE SIMILAR TO A SPALL STEAM LINE 2REAK ACCIPEtG.

IHE SPALL STE#1 LINE EREAK VESSEL INTEGRITY RESULT. IS BOUT 0ED BY THE LARGE STE#i LINE BREAK ACCIDENT THE RESULTS OF WHICH WERE PREVIOUSLY DISCUSSED.

THIS WAS. DEMONSTRATED BY NRLYSIS WHICH AR3ITPMILY APPLIED THE l RANCHO-SECO RCSIRN!SIENT.

9

=.-=a.-. - -w-= - -wre-c. . w -w o det-e--e#'e-~<m.* -- U- T e-m * % r# #

ec h g eY- - h,w ry s er y , v e-- , -, m--p-- ---y%---+,ywww-e.--,---,-e---yy% m--'