ML20086B904
| ML20086B904 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 10/13/1976 |
| From: | VERMONT YANKEE NUCLEAR POWER CORP. |
| To: | |
| Shared Package | |
| ML20086B899 | List: |
| References | |
| NUDOCS 8311220046 | |
| Download: ML20086B904 (2) | |
Text
-
...;- -.. =......._
l Oo O
FILE #5 50-271 PAGE 5 Docket Nue.ber Incidents or Occurrences VERMONT YANKEE Plant Name VERMONT YANKEE NUCLEAR POWER CORPORATION 40 Date Description I
271/74 OCCUR DTD WITH THE PLANT AT STEADY STATE POWER, CONTROL ROOM PERSONNEL RECEIVED A "UPS-1B 37 10/13/76 TROUBLE ALARM.
I 271/76 e
g h
g a
e 7
E e
e e
O g.
S e
=
e l
6 4
l 8311220046 780405 PDR ADOCK 05000271 S
PDR 1
e e
..._.___.__-._._._.a 1
bo O
FILE !/5 PAGE 6 50-271 Docket Number "8
VERMONT YANKEE Plant Name b.
Date Description 271/
With the plant at steady state _ power, Control Room personnel were performing 76/ 11/18/76 r utine RHR MOV operability testing on the RHR-27E valve when UPS-1B tripped.
43 271/
During MSIV partial, closure surveillance testing, RPS relay 5A-K3f deenergized 11/21/76 76/
normally, but then. reset while the operator was still closing MSIV 2-80C.
44 77 At approximately 0755 on 11/23/76, the containment air sampling pump motor was,
11/23/76 determined t9 be inoperable because it failed co htart after.it was automati-45 cally tripped during primary containment isolatio,n valve surveillance testing.
7 During normal plant operation, Control Room personnel reported a. loss of voltage
~
to Motor Control Center 89B. The loss of voltage.to MCC-89B causes the iopera- -
11/29/76 bility of the "B" LPCL subsystem.
271/
11/30/76 While pecorming the quarterly Reactor Low Pressure-*ECCS Valve Permissive 76/
Functional Test (o.P 4340), it was discove' red that Switch No.1 of PS2-3-52D 47 did not actuate at its prescribed Tech. Spec. limit of 300 psig. When pressure was reapplied to the switch and again reduced, the switch actuated as required.
l MEMOS - REQUESTED TRANSFER OF LEAD RESPONSIBILITY ON HYDRAULIC SHOCK SUPPRESOR OPERABILITY CRITERIA, AND INFORMATION RELATIVE TO COMPLIANCE WITH TECH SPECS FOR OPERABILITY.0F HYD'RAULIC SNUBBERS. DTD OCT. 15, 1976-l l
271/
12/7/76 CONTROL R000M PERSONNEL REPORTED THE TORUS PRESSURE INDICATION ON RECORDER 76/
PR-16-19-44 REPORTED TO BE INOPERABLE.
48 I
I i
L sg1 74 -9't'
~
a
-