ML17055D434
| ML17055D434 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 12/04/1987 |
| From: | Chaudhary S, Strosnider J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | |
| Shared Package | |
| ML17055D433 | List: |
| References | |
| 50-220-87-23, NUDOCS 8712140253 | |
| Download: ML17055D434 (12) | |
See also: IR 05000220/1987023
Text
U.S.
NUCLEAR REGULATORY COMMISSION
REGION I
Report
No.
50-220/87-23
Docket
No.
50-220
License
No.
Pri or ity
Category
C
Licensee:
Niagara
Mohawk Power Corporation
301 Plainfield Road
Syracuse,
13212
Facility Name:
Nine Mile Point, Unit
1
Inspection At:
Scriba,
New York; and Syracuse,
inspection
Conducted:
November 3-6,
1987
Inspectors:
%A.ctcc.
S.
K.
C audhary,
Senior Reactor
Engineer
tz<
6'ate
Approved by:
R. Strosnider,
Chief,
MPS,
EB,
ru~i~r
date
Ins ection
Summar
Ins ection Conducted
November 3-6
1987
Ins ection
Re ort No. 50-220/87-23)
Areas
Ins ected:
A routine
unannounced
inspection
was conducted
by a region
based
inspector of the licensee
follow-up actions
in response
to previously
identified violations
and unresolved
items.
Results:
No deviations, violations or unresolved
items were identified.
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DETAILS
1.0
Persons
Contacted
Nia ara
Mohawk Power
Cor oration
"T.
W.
Roman, Station Superintendent
"T.
R.
Egan, Associate
Senior
NC&V Engineer
- L. 'Wolf, Site Licensing Engineer
P. Francisco,
Lead Licensing Engineer
P.
George,
Assistant
Manager - Structural
Engineering
R. Oleck, Acting Manager of Consulting
A. Chiu, Associate Structural
Engineer
C. DiNatelli, Senior Structural
Engineer
New York State - Public Service
Commission
- P. Eddy, Site Representative
U.S. Nuclear
Re ulator
Commission
'.
Schmidt,
Resident
Inspector
Review of Licensee Actions in Res
onse to Previousl
Identified Items
The inspector
reviewed documentation
and held discussions
with licensee
engineers
and other management
personnel
to assess
the adequacy
and/or
resolution of previously identified unresolved
items, violations and
deviations.
The review consisted
of examination of pertinent engineering
records,
licensee
submittals to the
NRC, discussions
with cognizant
personnel,
and visual examination of completed
works in the plant.
The follow-up actions
in response
to violations were specifically reviewed
against
the commitments
made
by the licensee
in his submittal to the
NRC.
The resolutions
of unresolved
items were reviewed for technical
adequacy
and
use of accepted
engineering principles.
The documents
reviewed for
this effort are listed in paragraph
3.0 of this report.
The following items were reviewed:
(Closed) 86-07-06, Violation:
This item pertains to inaccurate
as built
drawings of modified supports
and failure to issue
change
requests
for
other supports.
The licensee
has
documented
the current design configura-
tion of supports
SCR1-3
and SCRl-6 in the final as-built drawing issued
as
revision
1
on January
9,
1987.
Also, the personnel
in the engineering
department
were re-advised of the necessity of documenting
engineering
changes
in support design,
even if the changes
are minor.
This item is
closed.
(Closed) 84-01-02,
Unresolved
Item:
This item is related to the design
accuracy of core spray pipe supports
at
pump ¹122.
The licensee
has
reanalyzed
the
system to demonstrate
the seismic qualification of the
piping system.
The reanalysis
is documented
in calc.
¹S14-81-P001,
Revision 0.
The inspector
reviewed the above analysis
and determined that
the analysis
is consistent with the plant
FSAR.
It has
been
performed
with the response
spectra
method described
in the
FSAR.
From the current
analysis it is determined that the system piping meets the code allowable
stresses
in the support for seismic
loading.
This item is closed.
(Closed} 84-15-04,
Unresolved
Item:
This item pertains
to
a lack of
documented
and consistent criteria for the seismic design
and qualifica-
tion of safety related piping systems.
The licensee
has developed
and
documented
the design criteria for seismic design
and qualifications of
piping system.
The inspector
reviewed the procedure
MDC-2, Revision 3.
The documented criteria appears
to meet the
ASME Code requirement for load
combinations
and the analysis
methods.
This item is closed.
(Closed) 86-07-13,
Unresolved
Item:
This item is related to
a damaged
hanger
in
a drain line in main
steam
system.
A work request
was initiated
and the hanger
was repaired
(LIR ¹010410)
on June
20,
1986.
The licensee
was not sure
as to how the actual
damage
to the hanger occurred,
but the
personnel
were re-advised
to be careful
when working in the vicinity of
safety related
equipment not to damage
equipment.
This item is closed.
(Closed) 86-07-07, Violation:
This item pertains to modification of
existing drain pipe supports
05-SCR1-3,
05-SCR1-6,
05-SCR1-7
where field
welds were undersized
( 1/4 inch to 3/8 inch less
than design).
The
inspector
reviewed the licensee's
evaluation of this discrepancy
documented
in Calc. ¹S14-39-Al.
The evaluation indicates that the
maximum unit load
on the welds (pounds
per inch) is only 2925 lbs per
inch in spite of the
reduction in weld size.
The actual
load is considerably
smaller than the
allowable load
on welds in question.
No safety concern exists.
This item
is closed.
(Closed) 86-07-05,
Unresolved
Item:
This item pertains to the design
and
analysis of piping and support
systems for emergency
condenser
system
modifications.
The licensee
has
used design
and acceptance
criteria that
were significantly different from the
FSAR descriptions
of the analytical
method.
In the modification design
and analysis:
1) the development of
ground motion was based
on probabilistic ground motion hazard analysis;
2) the allowable limits for pipe stresses
were based
on the
ASME Code,
Section III, 1980 instead of ASA 1331,
1955 as referenced
in the
FSAR;
and
3)
ASME Code
case
N-411 was
used in the analysis.
The licensee
has reanalyzed
the piping and supports
in the
Emergency
Condenser
(EC) system.
The
new analysis is documented
in calculation
package
No. 514-39-LBP0012
A through
D, Revisions 0.
The
new analysis,
although still based
on
1980
ASME Code,
conforms to the ground motion
referenced
in the
FSAR.
The
Code case
N-411
has not been utilized.
The
use of the later code
(ASME-1980) is permitted under Section
NI of the
ASME Code.
The inspector'reviewed
the analysis
and evaluation of the
system for technical
adequacy,
and conformance to the code requirements
and determined that the analysis
and design of the system
conforms to the
applicable
code
and the
FSAR descriptions.
Thi's item is closed.
(Closed) 84-15-01, Violation:
This item pertains to the lack of control
procedures
and functional specifications
during work related to IEBs 79-02
and 79-14.
In response
to this violation, the licensee
committed to
upgrade
his engineering
assurance
program to provide better procedural
control
and consistency
in design
and analysis
work.
The inspector
reviewed the following documents
to verify the adequacy
of the engineering
assurance
program.
System Descriptions;
Volumes
1 5 2 (Controlled Copy No. 25)
Design Criteria;
Volumes
1
& 2
Standard Specifications
(Controlled Copy No.
15)
Nuclear
Engineering
and Licensing Procedures;
Volumes 1, 2,
and
3
(Controlled
Copy No. 66)
Based
on the
above review and discussions
with responsible
engineers,
the
inspector
determined that controls
have
been
provided to assure
consis-
tency
and technical
accuracy
in the area of design
and analysis.
This
item is closed.
(Open) 84-15-05,
Unresolved
Item:
This item pertains to
a lack of
procedures
for the evaluation of increased
loads
on concrete
expansion
anchors
due to seismic reanalysis
required
by IEB 79-14.
The licensee
has
made progress
in this area;
however,
the actual
comparison of the original
design
loads
and the
IEB 79-14 loads
have not been
completed.
This effort
was included in the
scope of general
seismic
upgrade
program which has not
been
completed yet.
This item, therefore,
remains
open pending the
evaluation
and comparison of loads,
and determination of current factors
of safety for concrete
expansion
anchors.
(Closed) 86-07-11, Violation:
This item pertains
to anchor installation
(anchor 039-Al) where bolts
had
been installed
such that three bolts did
not meet the acceptance
criterion of two exposed
threads
beyond the
fastening
nut.
The licensee
has analyzed this condition and determined
(calculation
PS14-39-A1,
Rev.
0) that if the bolt is flush with the
surface of nut, the installation is acceptable.
Also, the jet impingement
load (the governing load)
has
been
reduced
from 200 kip to 149 kip due to
reanalysis.
Therefore
no safety concern exists regarding
the load
carrying capacity of the installed bolts.
This item is closed.
e
(Closed)
84-26-01,
Unresolved
Item:
This item pertains to lack of review
in the material requisition program of purchase
requisitions
(PR) by
the user organization to assure
the quality and adequacy
of items ordered
for service.
The licensee
has
revamped
the material requisition program
controls.
The old procedure
APN-14 has
been
superseded
and
a
new admin-
istrative procedure
AP-70,
Rev.
2, Sec-6.0,
has
been
implemented.
The
new
procedure
requires that all purchase
requisitions
must be reviewed
by
engineering
to assure their conformance
to
FSAR commitments,
codes
and
standards,
and the technical
requirements
of the application.
The material
management
system
manual
Section 5.0 also clearly establishes
the engineering
review requirement for all safety-related
purchase
requisi-
tions.
The inspector verified by
a review of some
PRs that this process
has
been
implemented
and is working.
A verification of this procedure
by
the licensee's
Compliance
and Verification Organization
was also reviewed
by the inspector.
This'tem is closed.
(Closed) 86-07-10, Violation:
Two braces for Emergency
Condenser
(EC)
steam piping anchor
No. 39-Al were connected
to wall embedded
plates
by
fin plates
and
use of a mixture of A-325 and A-490 bolts, whereas
A-490
bolts were required
by drawing No.
F-39831.
The licensee
provided records
to
show that at the time of NRC inspection,
the support
was still not
fully erected
and
was not ready for final inspection.
The A-325 bolts
were installed to temporarily hold the support, in place.
An in-process
gC inspection report
No. 21.6008
was presented
to the inspector to sub-
stantiate
that the support
had not been finally accepted
at the time of
the
NRC inspection.
This
gC report
was annotated
with a remark that A-325
bolts have
been
used to erect
the support.
The licensee
had replaced
the
bolts before the final inspection
and acceptance
of this support.
This
item is closed.
3.0
Documents
Reviewed
The following documents
were reviewed during the course of this
inspection.
APN-14, "Procedures
for Control of Material
and Services,"
Rev.
5
(Superseded)
"Procedures
for Control of Material
and Services,
Rev.
2
(current)
Material
Management
System
Procedures
Manual, Section
5
Safety Evaluation 85-043,
Rev.
2, "Installation of Perimeter Draining
System for Administrative Building"
'
Letters
from NMPC to
NRC
11/5/86
(NMPIL-0112); 1/7/85; 1/30/86
(NMPIL-0024); 3/31/86
(NMPIL-0040)
Design Standard
Manual, Section
MDC-1, MDC-2, MDC-5 (Mechanical
Design
Criteria)
Piping and Support Analyses
Calculation
Numbers
"Emergency
Condenser
System
condensate
Supply/Return"
Calc.
No. S14-81-P001,
Pump ¹122 to Topping
Pump ¹122"
Cal c.
No.
S14-39-LBP0012A-MDC-2
S14-39- LBP0012B-MDC-2
S14-39- LBP0012C-MDC-2
S14-39- LBP0012D-MDC-2
Calc.
No. S14-39-A1,
"E.C.
Steam
Supply Lines"
Work Request
No.
"System
OS Hanger"
Drawing Change
Request
No. NIY83, M4043LG044
Verification and Examination Report
No. 21-6008
Drawings
4.
Unresolved
Items
Unresolved
items are matters
regarding which more information is needed
to
determine if they are acceptable
items, deviations or violation of
requirements.
5.
Exit Interview
At the conclusion of the inspection,
the inspector
met with the licensee
representatives
(denoted
by * in paragraph
1.0) where the inspector
summarized
the
scope
and findings of this inspection,
At no time during this inspection did the inspector provide written
material
to the licensee.
The licensee
did not indicate that any
proprietary material
was included in the
scope of this inspection.
l
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