ML20141C454
| ML20141C454 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 04/02/1986 |
| From: | Martin R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Andrews R OMAHA PUBLIC POWER DISTRICT |
| Shared Package | |
| ML20141C460 | List: |
| References | |
| EA-86-029, EA-86-29, NUDOCS 8604070251 | |
| Download: ML20141C454 (3) | |
See also: IR 05000285/1985009
Text
!
..
,; '
A
APR
2 EE6
Docket No.
50-285'
,
-License No.
'IUL 86-29-
Omaha Public Power District
~ ATTN:
R. L. Andrews, Division Manager-
Nuclear Production
1623 Harney Street-
Omaha, Nebraska 68102
Gentlemen:
SUBJECT: NOTICE OF VIOLATION (NRC INSPECTION REPORT No. 50-255/85-09)
This refers to the special team inspection conducted by the NRC April 29 -
- May 3,1985 of activities authorized by Operating License No. DPR-40 for the
Fort Calhoun Station. The results of this inspection were previously sent to you
by our letter of July 26, 1985. The inspection team identified six deficiencies
classified as Potential Enforcement / Unresolved Items. We have determined from a
further. review of these matters during a followup inspection by Region IV on-
November 18-22, 1985 and meetings with your staff in the Region IV office on
December 12-13, 1985 that five of the six Potential Enforcement / Unresolved Items
were in violation of NRC requirements.
Since you waived your opportunity to
hold an enforcement conference, one was not conducted.
We consider Violation A in the enclosed Notice of Violation involving
qualification of Conax Electrical Penetration Assemblies within the scope of
10 CFR 50.49 requirements to be of significant concern. The modification devised
by Omaha Public Power District (OPPD), after it was discovered that Teflon seals
and conductor insulation in the penetration assemblies had failed qualification
tests, consisted of potting the junction between the penetration assembly bodies
and the related pigtail wires using room temperature vulcanizing (RTV) silicone
rubber. Since you failed to test the penetration assemblies after making
the modification, the ability of the RTV material to remain bonded through
the differential expansions and the severe environment of a LOCA was not
assured in this application. Thus, the penetration units still were not
appropriately qualified. The extent 6f the deficiency is very broad in
that the electrical circuits for all equipment located inside containment
must pass through the penetration assemblies; power, control, and
'
instrumentation wiring for both safety-related and non-safety-related equipment
inside containment potentially could be affected.
'
CERTIFIED MAIL
RETURN RECEIPT REOUESTED
1
<
i
8604070251 860402
ADOCK 05000285
.
O
,
L
l
)
'
)
_
.
.
__
__--
--. _
--
.
.--
__.
.- -
'
l
'
,
Omaha Public Power District
-2-
In accordance with the " General Statement of Policy and Procedure for NRC
Enforcement Actions," 10 CFR Part 2 Appendix C (1985), Violation A described
in the enclosed Notice has been classified at a Severity Level III. The other
violations have each been classified at a Severity Level IV.
Normally, a civil
!
penalty is considered for a Severity Level III violation. However, after
consultation with the Director, Office of Inspection and Enforcement, I have
i
decided that a civil penalty will not be proposed in this case because the
violations were identified prior to November 30, 1983 and this item is of the
type for which an extension prior to November 30, 1985 could have been granted
if requested before the deadline. We also recognize that following identification
of this problem by the NRC, you provided complete and timely reports concerning
your evaluation and corrective actions and you took extensive corrective action,
including the replacement of all penetration assemblies with units that have
been appropriately qualified.
You are required to respond to this letter and you should follow the instructions
specified in the enclosed Notice when preparing your response. Our inspection
I
activities and your letter dated January 11, 1986 indicate that corrective
actions are now complete. However, further response from you is necessary to
document the actions you have taken on each specific iten and to address any
other actions you plan to take to ensure that other deficiencies similar to those
noted do not adversely affect any other safety-related equipment. Where you have
already responded in writing to these findings (such as your letter of October 11,
1985), you do not need to repeat that information but need only reference
earlier communications and add additional detail not already contained therein.
After reviewing your response to this Notice, including your proposed corrective
actions, the NRC will determine whether further NRC enforcement action is
necessary to ensure compliance with NRC regulatory requirements.
In accordance with Section 2.790 of the NRC's " Rules of Practice," Part 2,
Title 10, Code of Federal Regulations, a copy of this letter and its enclosure
1
'
will be placed in the NRC Public Document Room.
,
The responses directed by this letter and the enclosed Notice are not subject
,
to the clearance procedures of the Office of Management and Budget as required
'
by the Paperwork Reduction Act of 1980, PL 96-511.
Sincerely,
Original signed by:
R.4 tert D. Martin
Robert D. Martin
Regional Administrator
1
Enclosure:
e
!
l
. - . .
-.
._
.--
-
._,
- . . - , _ , - -
,,_-.- ,, - ,_ -
. . ,. -
.- -
. . - .
.
Omaha Public Power Distret
-4-
Distribution:
SECY
CA
JMTaylor, IE
RVollmer, IE
JAxelrad, IE
>
ABBeach, IE
JLieberman, ELD
GZech, IE
VPotopovs, IE
RWilson, IE
FIngram, PA
JCrooks, AEOD
BHayes, OI
GEdles, OIA
DNussbaumer, OSP
Enforcement Officers
RI, RII, RIII, RV
IE/ES
IE/EA
State of Nebraska Radiation Control Program Director
RIV Distribution:
_
Regional Administrator, RMartin
,-
Division Director
/
Branch Chief, RPB
/
l
Branch Chief, RSB
/
.
DHunnicutt
/
DNorman
f
-
-
A. Johnson
[
!
,/,
RIreland
t
DPowers
[
'
-
Resident Inspector
(
I
CWisner (ltr hd)
RDoda
RIV Files
IE:E
ELD % m
RV
O
I
er J y1 r
ABBE
JLieberman
GZech
i RMartin
xej rad
'
.
43/38/86
3g/86
/p/86
3/ g{86
3/3/86
85/8/86
)63/3/86
RIV:C
AC:RSP
C:RS
C:R
D:D
E0
Norman DHunni
t DHunter
EJohnson DPowers RM<
in
RIrelandp%/g>/86f.,/l$/86
f //3 /8fr"Q; Gagliardo
2. / tt/86
Vj3/86
g/ /86 c7 hfi/86 4 / 7 /86