ML20199H856
| ML20199H856 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 01/19/1999 |
| From: | Jordan M NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Kingsley O COMMONWEALTH EDISON CO. |
| Shared Package | |
| ML20199H862 | List: |
| References | |
| 50-454-98-25, 50-455-98-25, NUDOCS 9901250355 | |
| Download: ML20199H856 (4) | |
See also: IR 05000454/1998025
Text
.
m
_
_ .._
_
_ _ _ _. _.__ _
. _ _ .
.
.
- [ Marg'o
UNITED STATES
NUCLEAR REGULATORY COMMISSION
,
['
- -
n
'
REGloN lti
,
j
801 WARRENVILLE RoAo
l
M
U
t
Lisle. ILLINOls 60532 4351
l
i
January 19, 1999.
I
Mr. Oliver D. Kingsley
President, Nuclear Generation Group
Commonwealth Edison Company
ATTN: Regulatory Services
Executive Towers West 111
1400 Opus Place, Suite 500
Downers Grove, IL 60515
SUBJECT:
BYRON INSPECTION REPORT 50-454/98025(DRP); 50-455/98025(DRP)
Dear Mr. Kingsley:
On January 4,1999, the NRC completed an inspection at the Byron 1 and 2 reactor facilities.
The enclosed report presents the results of that inspection.
i
During this inspection period, we noted that control room operations were generally performed
i
in a professional manner. Control room operators were attentive, knowledgeable of plant
conditions, and responded appropriately to alarms. We also noted that maintenance activities
l
were almost always conducted well. Specifically, heightened level of awareness briefings for
maintenance activities were thorough, including establishing contingency and compensatory
i
actions where appropriate. Supervisory oversight of maintenance activities was evident.
However, we are concerned with the continuing trends in configuration control events and
human performance errors. Of particular concern was the control room operators performance
in response to the reactor coolant system temperature transient during the Unit 2 turbine and
governor valve testing. The operators did not implement self-checking and peer checking
techniques, three-way communications, reactivity management practices, procedural
adherence requirements, and effective supervisory oversight which resulted in the transient
being further complicated and the 28 chemical and volume control pump being inadvertently
tripped. In addition, we are concerned with four other notable configuration control issues, two
of which were identified by the NRC. While we recognize that you are aggressively identifying
configuration control and human performance issues and attempting to address these
,
problems, your actions have not yet been effective at arresting these performance trends.
i
1
One violation of NRC requirements was identified during this inspection period. This violation
'
involves the unacceptable preconditioning of the stroke time testing of the auxiliary feedwater
pump discharge valves. The violation is cited in the enclosed Notice of Violation (Notice), and
'
the circumstances surrounding the violation is described in detailin the enclosed report. The
NRC has concluded that information regarding the reason for the violation, the corrective
actions taken and planned to correct the violation and prevent recurrence is already adequately
addressed on the docket in the enclosed report. Therefore, you are not required to respond to
this letter unless the description therein does not accurately reflect your corrective actions or
your position. In that case, or if you choose to provide additionalinformation, you should follow
the instructions specified in the enclosed Notice.
"
9901250355 990119
ADOCK 05000454
0
,
.
,
_ o_-.
. _ . . .
..
_ _ _ _ _ - . _ _ . _ . . _ . . ._
_ _ _ _ < . _ . . _ . . _ . _ _ . . . _ _ _ _ _ _ _ . _ _ _ _ _ . _ . ,
i
!
!
'
i
5
l
O. Kingsley .
-2-
i
l
it
,
'
i
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.
i
i
We will gladly discuss any questions you have concerning this inspection.
l
1
Sincerely,
!
!
l
[f
t
Michael J. Jordan, Chief
)
Reactor Projects Branch 3
Docket Nos.: 50-454;50-455
!
l
i
l
Enclosures:
1.
2.
Inspection Report 50-454/98025(DRP);
50-455/98025(DRP)
,
1
'cc w/encis:
D. Helwig, Senior Vice President
H. Stanley, PWR Vice President
(
' C. Crane, BWR Vice President
!
R. Krich, Vice President, Regulatory Services
l
DCD - Licensing
l
K. Graesser, Site Vice President
.
W. Levis, Station Manager
L
B. Adams, Regulatory Assurance Manager
R. Hubbard, MHB Technical Associates
M. Aguilar, Assistant Attorney General
State Liaison Officer
State Liaison Officer, Wisconsin
Chairman, Illinois Commerce Commission
!
l
i
1.
,
I
'
,
l
4
.
1
,
_
.. .
_ _
__
. .
m
4
._ _ _
.
-
m
_.2__s
.u
._
..
w.
_a
__ _
4
.
.
1
O. Kingsley
-3-
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.
We will gladly discuss any questions you have concerning this inspection.
Sincerely,
/s/ M. J. Jordan
Michael J. Jordan, Chief
Reactor Projects Branch 3
i
Docket Nos.: 50-454;50-455
>
.
Enclosures:
1.
2.
Inspection Report 50-454/98025(DRP);
50-455/98025(DRP)
cc w/encts:
D. Helwig, Senior Vice President
H. Stanley, PWR Vice President
,
C. Crane, BWR Vice President
'
R. Krich, Vice President, Regulatory Services
DCD - Licensing
K. Graesser, Site Vice President
W. Levis, Station Manager
B. Adams, Regulatory Assurance Manager
i
R. Hubbard, MHB Technical Associates
l
M. Aguilar, Assistant Attorney General
'
State Liaison Officer
State Liaison Officer, Wisconsin
i
Chairman, Illinois Commerce Commission
!
DOCUMENT NAME: R:\\lNSPRPTS\\BYRO\\BYR98025.DRP
,
'
To receive e copy of this document, Indicate le the boa *C' = Copy without ettechment/ enclosure *E" = Copy with ettschment/ enclosure
,
- N" = No copy
(
OFFICE
Rill
Rlil
A Rill
F
i
e
n E1.1
DATE
I #/99'
) /4/99
I/999
"
OFFICIAL RECORD CCWY
. ;,
,.
.
O. Kingsley
-3-
Distribution:
SAR (E-Mail)
RPC (E-Mail)
Project Mgr., NRR w/encls
J. Dyer, Rlll w/encls
J. Caldwell, Rlli w/encis
B. Clayton, Rill.w/encis
SRI Byron w/encls
DRP w/encls
TSS w/encls
DRS (2) w/encls
Rill PRR w/encls
PUBLIC IE-01 w/encls
Docket File w/encls
GREENS
LEO (E-Mail)
DOCDESK (E-Mail)
,
f,
1
250004
.
.
--
.
_ _ - - - -