ML20235D406
| ML20235D406 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 09/21/1987 |
| From: | Constable G, Garrison D, Clay Johnson NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | |
| Shared Package | |
| ML20235D290 | List: |
| References | |
| 50-498-87-48, 50-499-87-48, IEIN-83-72, NUDOCS 8709250215 | |
| Download: ML20235D406 (9) | |
See also: IR 05000498/1987048
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APPENDIX B
U. S. NUCLEAR REGULATORY COMMISSION
REGION IV
NRC Inspection Report:
50-498/87-48
Construction Permits:
CPPR-128
50-499/87-48'.
CPPR-129
Dockets: -50-498
50-499
Licensee:
Houston Lighting & Power Company (HL&P)
P. O. Box 1700
Houston, Texas 77001
Facility Name:
South Texas Project, Units 1 and 2 (STP)
Inspection At:
' Inspection Conducted:
July 5 through September 4, 1987
Inspectors:
1 /ff#[
'C. E. Jo fnson, Senior Resident Inspector
Dhty
roject dection C, Reactor Projects Branch
6?Waalv
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D.L.Garr/ison,ResidentInspector, Project
ghtp
Section C, Reactor Projects Branch
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Approved:
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)rV. L.UConstable, Chief, Project Section C
Date
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Reactor Projects Branch
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Inspection Summary
. Inspection Conducted July 5 through September 4, 1987 (Report 50-498/87-48;
50-499/87-48)
Areas Inspected:
Routine, unannounced inspection including:
site tours;
followup on 10 CFR Part 21 reports; post-tensioning system; reactor vessel and
internals (records); structural concrete (records); and heating, ventilating,
and air conditioning (HVAC).
Results: Within the six areas inspected, one violation (failure to follow
procedure, paragraph 7.b) was identified.
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DETAILS
1.
Persons Contacted
Principal Licensee Employees
- J. E. Geiger, General Manager, Nuclear Assurance
- J. Johnson, Quality Assurance Supervisor
- A. Mikus, General Supervisor
- M.- Bunner, Principal Engineer
- T. J. Jordan, Project Quality Assurance Manager
- W. P. Evans, Project Compliance Engineer
- J. Phelps, Project Compliance Supervisor
- S. Dew, Operations Support Manager
- J. T. Westermeier, Project Manager
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- J. Sabinski, Quality Control Supervisor
Bechtel Power Corporation (Bechtel)
'*L. Hurst,. Project Quality Assurance Manager
- R. Medina, Lead Quality Absurance Engineer
Ebasco Service Inc. (Ebasco)
- R. Bedford, Construction. Superintendent
C. Hahn, Construction Site Manager
Prescon
W. Schneider, Quality Supervisor
In addition to the above, the NRC inspector also held discussions with
other members of the HL&P, Bechtel, Prescon, Westinghouse, and Ebasco
staffs.
- Denotes those individuals attending the exit interview conducted on
September 4,1987.
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2.
' Site Tour
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The NRC resident inspectors made routine site tours in order to observe
ongoing work activities and the condition of installed safety-related
equipment and plant status.
These site tours were performed primarily
during normal working hours and on the weekend and backshift periods.
The
following areas for both units were inspected:
fuel handling
,
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building (FHB), mechanical and electrical auxiliary building (MEAB),
diesel generator building (DGB), and reactor containment building (RCB).
Within the areas inspected, no violations or deviations were identified.
3.
Followup on 10 CFR Part 21 Reports
The following Part 21 report is considered closed since the item does not
apply to STP.
The subject of the report was environmental qualification
of certain types of circuit breakers which was also reported in
IE Notice (IEN) 83-72 as equipment environmental qualification Notice
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No. 19.
The NRC inspector verified by review of qualification documents
that this item does not apply to the project.
NRC Log No.
Reporting Vendor
Letter Date
8400551
Rockwell/ITE Gould
031187
IEN 83-72 was closed in NRC Inspection Report 50-498;499/87-40.
4.
Containment Building Post-Tensioning (Unit 2)
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A field inspection of the ongoing construction activities of the
post-tensioning contractor (Prescon Corporation) was performed in order to
assess the effectiveness of the work and quality control program.
This
inspection included only work on the vertical tendons.
a.
Work Observation
The NRC inspector performed an inspection in the tendon access
gallery and observed the completed and partially completed
installations.
There are 96 vertical tendons that extend over the
dome and are anchored at two points 180 degrees apart.
Seventy-three
vertical tendons have been installed, stressed, greased and covered;
nine are placed in sheaths and 14 are yet to be delivered.
The NRC inspector inspected 146 installed vertical covers for damage,
gasket seating, leaking grease, and grease plugs.
Twenty tendons
which had shop and field-made ends were inspected for buttonheading
and protective greasing.
Two tendons had rusted due to water
intrusion.
These were identified by the licensee and will be handled
according to the disposition of the nonconformance report (NCR) which
was issued describing the condition.
Forty-eight tendon can covers were inspected in the laydown area for
damage,
b.
Records
Six record packages for vertical tendons were randomly selected from
the Prescon files and reviewed for completeness in accordance with
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the Prescon procedures.
The reports reviewed were:
receiving
inspection, installation inspection, cutoff inspection,
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buttonheading, stressing, grease can installation, and greasing
inspection.
The records inspected were for Tendons 2V101, 2V201, 2V213, 2V107,
2V135, and 2V233.
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The records were complete and in accordance with the procedure from
which they were generated.
c.
Grout Injection
The 1RC inspector and licensee have previously observed water coming
out of some tendon sheaths on the east side of the tendon gallery
which is part of the base mat.
The mat is approximately 18 feet
thick and 186 feet in diameter with a construction joint in the
horizontal plane about 4 feet above the gallery ceiling.
The seepage
is suspected to originate in the construction joint.
Core holes have
been drilled in the area to find the source of water and provide an
entry for pressure injection of chemical grout.
The NRC inspector
witnessed part of the remedial work and determined that the effort
was in accordance with contract Technical Specification FSC061.
The
specification requires the pumping of AC400 chemical grout under the
supervision of Bechtel engineers.
The grout sets up as a semi-hard
gel.
No problems were observed in the repair operation.
This item
is being tracked on hCR BC-03936.
No violations or deviations were identified.
5.
Reactor Vessel and Internal (Records) (Unit 2)
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The NRC inspector reviewed three traveler packages generated by
Westinghouse pertaining to the reactor vessel internals.
Work performed
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under these packages included installation of the lift rods, the internal
disconnect device (IDD) pressure housing (including the seal weld), and
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machining of the upper internal lift rod disconnect assembly.
Records confirmed that the required inspections were performed and
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inspection hold points were observed.
Records also confirmed that required material certification,
nondestructive tests, and other specification requirements were met.
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Receipt and storage inspection records were also available in the
traveler.
The records were complete and well formatted for ease of review.
The
record packages reviewed were:
T-THX-262 " Installation of Upper Internal Lifting Rods and Upper
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Internal Vessel Head and Alignment Pins"
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T-THX-317 " Internal Disconnect Device Pressure Housing"
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T-THX-316 " Machining'of the Upper Internal Lift Rod Disconnect
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Assembly"
No violations ~or deviations were identified.
6.
Structural Concrete (Records) (Unit 2)
The NRC inspector reviewed the structural concrete records of.the
auxiliary feedwater storage tank. . Ten concrete traveler packages were
reviewed.
a.
Installation Inspection Records'
The records confirmed that concrete control, such as production,
placement and the installation of structural components were
performed as specified and that the required inspections (before and
after form removal) were performed.
Essential acceptance criteria
was'also defined.
Cadweld.(a method for joining reinforcing bar ends) records were
available for review and documented for location.
Production cadweld
test results quantitatively indicate that the test results and
acceptance criteria were in accordance with specifications.
The concrete records also confirmed that required weather, physical
protection, and curing conditions were provided and properly
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monitored during and after the placement.
The NRC inspector also reviewed the concrete cylinder compressive
strength test results, design mix, and the replacement and
post placement inspection records.
b.
Nonconformance/ Deviation Records
Review of the concrete traveler packages indicate that NCRs were
included and adequately addressed by appropriate personnel.
The NCRs
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were legible, complete, reviewed and signed off by quality control
and engineering personnel.
In conclusion, the structural concrete records reflect work
accomplishments consistent with procedures and specifications.
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also indicate that the licensee's system for preparing, reviewing,
.and maintaining records is functioning properly. -Concrete records
packages reviewed.were-
CCP-9-AF-S-032-203
CCP-9-AF-W-045-201
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CCP-9-AF-S-023-201
CCP-9-AF-W-056-201
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CCP-9-AF-S-023-203
CCP-9-AF-W-069-201
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CCP-9-AF-S-032-201
CCP-9-AF-W-020-201
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CCP-9-AF-W-023-201
CCP-9-AF-W-020-203
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CCP-9 AF-S-034-201
CCP-9-AF-W-022-001
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CCP-9-AF-W-022-203
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No violations or deviations were identified.
7.
Heating, Ventilating and Air Conditioning (HVAC) (Unit 2)
The NRC inspectors through dimet observation, interviews, and independent
evaluation of work performance, and work in progress have determined that
the work on safety-related HVAC systems is generally accomplished in
accordance with licensee procedures and engineering specifications.
a.
Personnel Interviews
The NRC inspector interviewed three craft personnel in order to
assess their qualifications in the area of installation of HVAC
supports and duct work.
Discussions with these craft indicated that
they were trained in the installation requirements to perform their
given task.
The foreman was knowledgeable of the inspection
requirements, installation requirements and hold points.
The welders
were qualified to the weld procedure used.
b.
,Iy tallation Activities
The NRC inspector witnessed inprogress work on HVAC
Support 2-6-0128-S071 in HVAC equipment Room No. 206 and portions of
the control room envelope system (HB01) in the electrical auxiliary
building (EAB).
Inspection of Support 2-6-0128-S071 indicated that
the craft were using the latest drawing revision and work procedure
for installation.
Work completed was in accordance with installation
drawings and field change request (FCR).
Inspection of duct sections
of the control room envelope system indicated that orientation and
configuration was in accordance with the drawings; however, the
installation of bolts was not in accordance with the applicable
specification, 5V279VS1003, Revision 7, paragraph 3.12 as reference
by Procedure SSP 38.
The specification states, " Bolts and nuts for
galvanized ductwork shall be hot-dipped galvanized, cadmium plated,
or electromagnetic zinc-coated.
Hot-dipped galvanized nuts shall
only be used with hot-dipped galvanized bolts.
This is because the
galvarized bolts are sized differently than the other bolts and
proper fastening cannot be assured when the nuts and bolts are
improperly matched.
Cadmium plated, and electromagnetic zinc-coated
nuts may be used with either cadmium plated or electromagnetic
zinc-coated bolts."
The NRC inspector fousd that galvanized nuts were interchanged with
(;1ectromagnetic zinc-coated bolts, and galvanized bolts with
electromagnetic zinc-coated nuts.
This is an apparent violation of
the procedure / specification (499/8748-01).
It was noted that this
problem had been brought to the attention of HL&P in NRC Inspection
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Report ~50-498/86-31 at which time prompt but apparently incomplete
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corrective action was taken.
In conjunction with the above observations, the NRC inspector also
reviewed the following traveler packages:
2658200/55-S133
2-6-0055-202
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2658200/55-5093
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2-6-0055-S056
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2658200/55-P206
2658200/55-S056
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2658200/55-P207
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. 2658200/55-5058
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2658200/55-P208
2658200/55-S134
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2-6-055-973-
2-6-0055-5097
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2658200/55-P203
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c.
HVAC Fabrication Shop
The NRC inspector performed an inspection of the HVAC fabrication
shop to determine if fabrication practices were properly. followed.
The inspector reviewed three traveler packages.for the duct sections
inspected. These were inspected for workmanship, size, shape,-
drawing detail, and weld quality. The fabrication travelers examined;
for these sections were:
2-6-055-985
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'2-6-0144-294
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Except' as noted above no violations or deviations were identified.
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Exit Interview
The NRC inspectors met with the licensee (denoted in paragraph 1) on
September 4, 1987, and summarized the scope and findings of this
inspection.
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