ML20085L572

Telecopy Ro:On 710810,subsequent to Diesel Generator Surveillance Check Due to Generators Failure to Start,Core Spray Injection Valve 3-1402-25C Failed to Open on Signal. Causes of Both Failures Unknown.Investigation Underway

ML20085L572
Person / Time
Site:	Dresden
Issue date:	08/12/1971
From:	Hoyt H COMMONWEALTH EDISON CO.
To:	Grier B US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML20085L542	List: ML20085L537 ML20085L572
References
NUDOCS 8311020010
Download: ML20085L572 (2)

Text

_... _

l FOR bE D[ESkL GENERATOR PROBLEr.1 AND SECTION 3 5 AB?.117 0F TliE D PR-2 5 TE Cli N I C AL SP E C I F I C AT I ON S FOR TliE CORE SPR AY PROBLE't.=

11 K liOYT. SUPERI NTENDENT CO'.1L10N17E ALTli EDI SON DRE SDE N NUCLE AR P017ER STAT 10'h =-

f/21/7/

8311020010 710820 PDR ADOCK 05000249 S

PDR

=? 1530 3 D--2/3 D-3 D-2/3 1'O 1971 D-2 D-2/3 2 :15 A'.1 1

D-2/3 D--3 3--1402-25C D 2/3 6 63 A.1 DP R-19 DPR-25 3 5. AB.'.117

{ DPR B A17Ti.1..===

,yg j

w u trosin sse)

BUU -

(

Copy senf PDF h

a

f e

j' MEMD ROUTE SLIP l

5** 'a * * **v t t h's-For caac"

'ar act'a'5-Torm AEC-93 (Rev. May 14.1947) AEL e.,240 Note and return.

For al nature.

For leformation.

t t

TO (Name and unn) neflus REMARK 1 J. Keppler TWX INCIDENT REPORT - DRESDEN 3 (50-249)

CO:HQ mn TO (Name and unit)

NeTIES REMAAKS mn TO (Name and unM) peTLES REMARKS mn FROM (Name and unit)

REMAAKS D. Hunnicutt In accordance with PI 1000, attached is the original TWX CO:III report dated 8-11-71 reporting diesel 2/3 started tailure &

potential unavailability of core spray system.

9 uE-12-71

-4' g.~,7 q

'b e

---v pnong m 4

USE OTHER SeDE FOR ADDITaonaL nEMAmKs

g,g.

U 19712310d4 to 2 J~

4 ef,. g. q (..

• Q L,

f

. USAEC HOS GTWN Wu WSH L

' JJ.

v.s. atorac EutacT coHn.

o T wx UNIT g

j 1

.J r h l

k 7

u TLXA256 (di3 DEA 193 p

AUG2 I 197lg

~

F Mca c

~

1. %mI

//

DE JLAl90 MJ NL PD WijX MORRIS ILL 10 p

DR P A MORRIS DIRECTOR DIVN OF REACTOR LICENSING

'b US TOMIC ENERbY C,OMMISSION,WASHDC

^

1530 HOURS THIS DATE THIS IS 70 CONFIRM TELEPHONE CONVERSATION REGION 3 NOMPLI ANCE. CONCERNING THE INOPERABIL WITH E. A. JORDAN.

INJECTION VALVE..

OF THE D-2/3 DIESEL GENERATOR & 0-3 CORE SPRAY THE D-2/3 DIESEL GENERATOG SURVEILLANCE CHECK WAS SUCCESS l

RUN EARLY ON AUG.~10. 1971

~

IN PREPARATION FOR A D-2* DIESEL' l

GENERATOR OUTAGE. SUBSEQUENT TO THE CHECK AN OPERATOR NOTED THAT THE AIR MOTOR 'SQLEN01D VALVE ON THE D-2/3 DIESEL GENE IT FAILED WAS OPEN. ANOTHER START WAS ATTEMPTED AT 2:15AM &

THE D-2/3 DIESEL' GENERATOR W'AS DECLARED INOPERABLE TO START.

AND THE REQUIRED SURVELLANCE WA*, INITI ATED.' D-3 CORE SPRAY INJECTION VALVE 3-1402-25C FAILED TO OPEN ON ITS SIGNAL. THE VALVE ELECTRICAL thEAKER WAS RE-SET AND IT OPERATED PROP.RLY.

INVESTIGATION IS PROCEEDING INTO THE CAUSE OF D-2/ 3 NE :EL,,,

~

GENERATOR FAILURE TO START AND CORE SPRAY VALVE FAILUkE TO OP EN.

l' THESE INCIDENTS ARE BEING REPORTED UNDER SECT 10:4 6

~

0F THE DPR-19 AND DPR-25 TECHNICAL SPECIFICATION 3 FOR THE DIESEL g

GENERATOR PROBLEM AND SECTION 3 5.A.2 0F THE DPR-25 TECHNICAL 3

)

' SPECIFICATIONS FOR THE CORE SPRAY PROBLEM.

H M H0YT. SUPERINTENDENT COMMONWEALTH EDISON DRESDEN NUCLEAR

/i POWER STATION.'

~

D*

b

,}

'.7g e25P EDT i-1 E

h kj g

t.

USAEC HQS GTWN

..,4

1. 5 O

,/

g.g h

g w......

l t,

sa s 1 -

t t

7W %7W

?)

or2GS

/

f

,H4(a I

.a c ~

L j % x,.

5 pg.f E

e

__m

.m

.