Protecting People and the EnvironmentUNITED STATES NUCLEAR REGULATORY COMMISSION
LICENSEE: CONSOLIDATED EDISON CO. OF N.Y./NEW
SITE: INDIAN POINT 2 EN NUMBER:32731
DOCKET: 05000247 EVENT DATE: 08-06-97
RX TYPE: PWR EVENT TIME: 00:00
VENDORS: W-4-LP NOTIFY DATE: 08-06-97
EMERGENCY CLASS: N/A REGION: 1 STATE: NY TIME: 15:00
OPS OFFICER: LEIGH TROCINE
10 CFR SECTION: CCCC 21.21 UNSPECIFIED PARAGRAPH
UNIT SCRAM RX INIT INITIAL MODE CURR CURRENT MODE
CODE CRIT PWR PWR
2 N Y 100 POWER OPERATION 100 POWER OPERATION
10 CFR PART 21 NOTIFICATION REGARDING W-2 SWITCHES WITH TEXIN
STARWHEELS
THE FOLLOWING TEXT IS A PORTION OF A FACSIMILE RECEIVED FROM THE
LICENSEE:
"WESTINGHOUSE TECHNICAL BULLETIN NO. NSD-TB-74-10, DATED 9/9/74,
AS REVISED ON 9/30/74, REPORTED THAT THE STARWHEELS, MADE OF A
MATERIAL CALLED TEXIN, IN CERTAIN TYPES OF W-2 SWITCHES HAVE
EXHIBITED FAILURES. ALL PLANTS WITH SUCH SWITCHES INSTALLED,
INCLUDING [INDIAN POINT UNIT 2], WERE INSTRUCTED TO REPLACE ALL
TEXIN STARWHEELS IN THE AFFECTED W-2 SWITCHES. HOWEVER, THE
TECHNICAL BULLETIN NOTED THAT 'ALL SWITCHES HAVING MORE THAN
THREE STAGES' CAN BE 'POSITIVELY IDENTIFIED AS NOT AFFECTED BY
THIS BULLETIN.'"
"DURING THE RECENT REFUELING OUTAGE AT [INDIAN POINT UNIT 2], IT
WAS DISCOVERED THAT SEVERAL SAFETY-RELATED W-2 SWITCHES, HAVING
MORE THAN THREE STAGES, DID INDEED HAVE THE TEXIN STARWHEELS.
THIS WAS VERIFIED BY THE CHEMICAL TESTS AND INFRARED
SPECTROSCOPIC STUDIES AT CATHOLIC UNIVERSITY."
"THE AFFECTED STARWHEELS [HAD] BEEN REPLACED PRIOR TO UNIT 2
RESTART. IN ADDITION, THE DISCOVERY OF THE TEXIN STARWHEELS IN
THESE W-2 SWITCHES HAS BEEN COMMUNICATED TO INDUSTRY VIA THE INPO
NUCLEAR NETWORK."
THE LICENSEE STATED THAT THIS ISSUE AFFECTED THE RECIRCULATION
SWITCHES FOR SAFETY INJECTION (RECIRCULATION MODE).
THE LICENSEE PLANS TO NOTIFY THE NRC RESIDENT INSPECTOR.
