ML16342D133
| ML16342D133 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 12/01/1995 |
| From: | Gwynn T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Rueger G PACIFIC GAS & ELECTRIC CO. |
| Shared Package | |
| ML16342D134 | List: |
| References | |
| NUDOCS 9512060170 | |
| Download: ML16342D133 (12) | |
See also: IR 05000275/1995098
Text
(NUDOCS OFFSITE FACILITY)
REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)
t'~>'ACCESSION NBR:9512060170
DOC.DATE: 95/12/Ol
NOTARIZED: NO
DOCKET
~ACIL:50-275 Diablo Canyon Nuclear
Power Plant, Unit 1, Pacific
Ga
05000275
50-323 Diablo Canyon Nuclear
Power Plant, Unit 2, Pacific
Ga
05000323
AUTH.NAME
AUTHOR AFFILIATION
GWYNNiT.P.
Region
4 (Post
820201)
RECIP.NAME
RECIPIENT AFFILIATION
RUEGER,G.M.
Pacific Gas
& Electric Co.
SUBJECT:
Forwards
insp repts
50-275/95-98
a 50-323/95-98
on
950810-1109.No violations noted. Condition which has
been
identified as contributor to mechanical
safety-related, steam turbine-driven standby
pumps, noted.
DISTRIBUTION CODE:
IE01D
COPIES
RECEIVED:LTR
ENCL
SIZE:
TITLE: General
(50 Dkt)-Insp Rept/Notice of Vio ation
R sponse
NOTES:
RECIPIENT
ID CODE/NAME
PD4-2
INTERNAL: ACRS
AEOD/SPD/RAB
DEDRO
NRR/DISP/PIPB
NRR/DRPM/PECB
NUDOCS-ABSTRACT
OGC/HDS3
EXTERNAL: LITCO BRYCEgJ
H
NRC PDR
COPIES
LTTR ENCL
1
1
2
2
1
1
1
1
1
1
1
1
1
1
1
'
1
1
1
1
RECIPIENT
ID CODE/NAME
BLOOMERS
AEOD/DEIB
AEOD/~
~E
OENTER
NER DRCH/HHFB
NRR/DRPM/PERB
OE DIR
RGN4
FILE
01
NOAC
COPIES
LTTR ENCL
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
NOTE TO ALL"RIDS" RECIPIENTS:
PLEASE HELP US TO REDUCE IVASTE!COiNTACTTHE DOCUMENTCOi ASTROL
DESK, ROOM Pl-37 (EAT. 504-2083 ) TO EL!h!INATEYOUR NAME FROII
DISTRIBUT~IONLISTS FOR DOCUMENTS YOU DON'TNEED!
TOTAL NUMBER OF COPIES
REQUIRED:
LTTR
20
ENCL
20
<I.S ~Eicos 'Ip0~~i
kg**4
UNITEDSTATES
NUCLEAR REGULATORY COMMISSION
REGION IV
611 RYAN PLAZADRIVE, SUITE 400
ARLINGTON,TEXAS 76011 8064
ore
i s95
Pacific Gas
and Electric Company
Nuclear
Power Generation.
814A
ATTN:
Gregory
M. Rueger
~ Senior Vice
President
and General
Manager
Nuclear
Power Generation
Bus. Unit
77 Beale Street,
Room 1451
P.O.
Box 770000
San Francisco.
94177
SUBJECT:
NRC INSPECTION REPORT 50-275/95-98;
50-323/95-98
This refers to the inspection conducted
by Mr. C. J.
Paulk
and
Ms. L. J.
Smith
of this office on August 10-11.
1995, at the Diablo Canyon Nuclear Power
Plant. Units
1 and 2. facility.
This initiative was prompted
by recurring
fai lures of safety-related
steam turbine-driven standby
pumps at several
facilities in Region IV.
We concurrently performed this inspection at most of
the Region
IV facilities to better understand
the scope of designs
maintenance,
and testing practices
related to safety-related
steam
turbines'hich
were supplied
by the Terry Corporation.
We also examined several
aspects
of various experience
review processes
to determine
why similar
failures continued to occur.
On November
9
~
1995, at the conclusion of the
in-office review. the findings 'were discussed
with those
members of your staff
identified in the enclosed report.
Areas examined during the inspection are identified in the report.
Within
these areas'he
inspection consisted of selective
examinations of procedures,
representative
records,
and interviews with personnel.
The combined results
of this inspection for each of the Region
IV faci 1'ities are documented
in the
enclosed
report and executive
summary.
With respect to your facility, the inspection identified one condition that
has
been identified as
a contributor to mechanical
safety-related
steam turbine-driven standby
pumps at other facilities.
Specifically, your staff had not established
a program for routine
refurbishment of the turbine governor.
In addition, Diablo Canyon operates
system with the turbine drain valves closed,
which
conflicts with vendor recommendations.
The inspection also noted the absence
of alarms
or indications to alert operators to potential
problems in the
turbine steam line condensate
removal
system.
We encourage
you to review
these conditions to ensure
continued reliable operation of the auxiliary
pump turbines.
95i20bOi70 95i20i
ADOCK 05000275
8
r
Pacific Gas
and Electric Company
-2-
We noted that your use of a lubricant with vapor-phase
inhibitors was
consistent with vendor recommendations.
However,
use of this oil at other
facilities with high standby temperatures
has resulted in governor speed
control problems,
and improper operation of the overspeed trip tappet.
While
you have not experienced
any problems related to the use of this type of
lubricant. your turbines would become susceptible if your steam admission
.valves
leaked significantly.
In accordance
with 10 CFR 2.790 of the NRC's "Rules of Practice,"
a copy of
this letter and its enclosures will be placed in the
NRC Public Document
Room.
Should you have any questions
concerning this inspection,
we will be pleased
to discuss
them with you.
Sincerely,
Dockets:
50-275
50-323
Licenses:
DPR-82
Enclosure:
NRC Inspection Report
50-275/95-98:
50-323/95-98
w/attachments
cc w/enclosure:
ATTN:
Dr. Richard Ferguson
Energy Chair
1100 11th Street.
Suite 311
Sacramento,
Cali fornia
95814
San Luis Obispo
Mothers for Peace
ATTN:
Ms.
Nancy Culver
P.O.
Box 164
Pismo Beach, California
93448
Ms. Jacquelyn
C. Wheeler
P.O.
Box 164
Pismo Beach. California
93448
homas
P.
Gwynn
Dir tor
Division of Rea tor
afet
0
Pacific Gas
and Electric Company
-3-
The County Telegram Tribune
'TTN:
Managing Editor
1321 Johnson
Avenue
P.O.
Box 112
San Luis Obispo. California
93406
.San Luis Obispo County Board of
Supervisors
ATTN:
Chairman
Room 370
County Government
Center
San Luis Obispo. California
93408
California Public Utilities Commission
ATTN:
Mr. Truman BurnsNMr. Robert Kinosian
505 Van Ness'm.
4102
San Francisco,
94102
Diablo Canyon
Independent
Safety Committee
Attn:
Robert
R. Wellington. Esq.
Legal
Counsel
857 Cass Street.
Suite
D
Monterey. California
93940
Radiologic Health Branch
State
Department of Health Services
ATTN:
Mr. Steve
Hsu
P.O.
Box 942732
Sacramento.
94234
State of California
ATTN:
Mr. Peter
H. Kaufman
Deputy Attorney General
110 West A Street.
Suite
700
San Diego. California
92101
Pacific Gas
and Electric Company
ATTN:
Christopher J. Warner'sq.
P.O.
Box 7442
San Francisco,
94120
Diablo Canyon Nuclear
Power Plant
ATTN:
Warren
H. Fujimoto, Vice President
and Plant Manager
P.O.
Box 56
Avila Beach. California
93424
0
Pacific Gas
and Electr ic Company
-4-
E-Hail report to D. Nelson
(DJN)
E-Hail report to
NRR Event Tracking System
( IPAS)
bcc to
DMB (IE01)
bcc distrib.
by RIY:
L. J. Callan
Resident
Inspector
DRSS-FIPB
HIS System
Branch Chief (DRP/E,
WCFO)
Senior Project Inspector
(DRP/E,
WCFO)
RIV File
Branch Chief'DRP/TSS)
Leah Tremper
(OC/LFDCB,
MS:
TWFN 9E10)
H.
Hammond
(PAO,
WCFO)
DOCUMENT NAME:
R:K DCKDC598RP.CJP
To receive copy of document,indicate
in box: "C" ~ Copy without enclosures
"E" a Copy with enclosures "N" ~ No copy
RIV:RI: EB
RI:HB
C:EB
E
D:DRS
D:DRP
D:DRS
LJSmith
11/22/95
11/22/95
ll/ 5/95
"previous y concurre
CJPaulk*
CAVanDenburgh*
TPGwynn
1V
/95
PY
JEDyert~~
TPGwyn
ll/3 /95
131
/95
r
Pacific Gas
and Electric Company
E-Mail report to D. Nelson
(DJN)
E-Hail report to NRR Event Tracking System
(IPAS)
bcc to
DMB ( IEOl)
bcc distrib. by RIV:
L. J. Callan
Resident
Inspector
DRSS-F IPB
HIS System
Branch Chief (DRP/E.
WCFO)
Senior Project Inspector
(DRP/E,
WCFO)
RIV File
Branch Chief (DRP/TSS)
Leah Tremper
(OC/LFDCB,
MS:
TWFN 9E10)
M.
Hammond
(PAO,
WCFO)
DOCUMENT NAME:
R:K DCKDC598RP.CJP
To receive copy of document, 1ndicate In box: "C" ~ Copy without enclosures
"E" ~ Copy with enclosures "N" ~ No copy
RIV:RI: EB
RI:MB
C:EB
E
D:DRS
D:DRP
D:DRS
LJSmith
11/ 5/95
CJPaulk*
11/22/95
CAVanDenburgh*
11/22/95
TPGwynn
JEDyert~w
1V
/95
11/3 /95
TPGwyn
13J
/95
- previous y concurre
L
R
pQg(
0