ML20235J437
| ML20235J437 | |
| Person / Time | |
|---|---|
| Site: | Trojan File:Portland General Electric icon.png |
| Issue date: | 02/07/1989 |
| From: | Bevan R Office of Nuclear Reactor Regulation |
| To: | Cockfield D PORTLAND GENERAL ELECTRIC CO. |
| References | |
| NUDOCS 8902240276 | |
| Download: ML20235J437 (2) | |
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February 7,l1989",
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-lDocketiNo.50444 a
Mr. David Cockfield-
'Vice Pre'sident, Nuclear Portland. General Electric Company.
.121 S.W. Salmon Street Portland,' Oregon 97204 Dear Mr. Cockfield
SUBJECT:
INSPECTION REPORT APPLICABLE TO TROJAN. NUCLEAR PLANT
.The enclosed inspe'ction report and cover letter has applicability to the
- Trojan Nuclear Plant. We are enclosing a copy for your'information.
Sincerely,
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e Roby Besan,: Project Manager
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Project Di, rectorate V E
Division of. Reactors. Projects -'III,
" IV,tV>and Special Projects.
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cc: As-stated above
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'.l-WASHINGTON, D C. 20555 '
February _7,.1989 Docket No. 50-344-
.Mr. David Cockfield Vice President, Nuclear Portland General Electric Company
.121.S.W. Salmon Street
. Portland, Oregon 97204 Dear Mr. Cockfield SU6 JECT:
INSPECTION REPORT APPLICABLE TO TROJAN NUCLEAR PLANT The enclosed _ inspection report and_ cover' letter has applicability to the Trojan Nuclear Plant. We are enclosing a copy for your information.
Sincerely,
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\\ V e-Roby Bevan, Project Manager Project Directorate V-Division of Reactors Projects - III, IV, V and Special Projects cc: As stated above
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NUCLEAR REGULATORY COMMISSION WASHitJGTON, D. C. 20555
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JAN 171989 Docket No. 99901334/88,
Mr. k. Dinse, Mariaging Director Auma Reister KG P.O. BoxL1362 D-7840 Mulhelm (Baden)
. West Germany i
Dear Mr. Dinse:
This letter addresses the inspection of your facility at Mulheim, West Gemany conducted by Mr. K. R. Naidu of this office on November 14-15, 1988, and the discussions of his findings with you and other members of your staff at the conclusion of the inspection.
The purpose of the inspection was to review the implementation of your quality assurance program in selected areas and review the quality assurance records relative to the nine SAI-25 type actuators supplied to the Trojan Nuclear Power Plant.
Areas examinea during the NRC inspection and our findings are discussed in the enclosed report. This inspection consisted of an examination of procedures and representative records, interviews with personnel, and observations by the inspector, k)UHn the scope of this inspection, we found no instance where you failed to meet fGC requirements.
In accordance with 10 CFR 2.790 of the Comission's regulations, a copy of this letter and the enclosed inspection report will be placed in the NRC's Public Document Room.
Should you have any questions concerning this inspection, we will be pleased _to discuss them with you.
Sincerely, t-c,,vl 1
Brian K. Grimes, Director Division of Reactor Inspection and Safeguards Office of Nuclear Reettor Regulation
Enclosure:
Appendix A-Inspection Report 99901334 cc:
R. Dinse Auma Actuators 4 Zester Drive Pittsburgh, Pennsylvania 16205
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I ORGANIZATION:
AUMA REISTER KG MULHEIM, WEST GERMANY
. REPORT INSPECTION INSPECTION N0.: 99901334 DATE: November 14-15, 1988 ON-SITE HOURS:
16
'l CORRESPONDENCE ADDRESS: Mr. R. Dinse, Director Auma Reister KG D-7840 Mulheim (Baden)
West Germany P.O. Box 1362 ORGANIZATIONAL CONTACT: Mr. R. Dinse TELEPHONE NUMBER:
(07631) 8090 NUCLEAR INDUSTRY ACTIVITY:
Manufacturer of electric motor-operated actuators for valves.
ASSIGNED INSPECTOR:
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4 K. R. Naidu, Program Development and Reactive Date Inspection Section (PDRIS)
OTHER INSPECTOR (S):
APPROVED BY:
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ET T. Baker, Chief PDRIS, Vendor Inspection Branch Date INSPECTION BASES AND SCOPE:
A.
BASES:
B.
SCOPE: Review of implementation of the Quality Assurance Program in selected areas. Review of quality assurance records for the motor operators supplied to the Trojan Nuclear Power Plant.
PLANT SITE APPLICABILITY: Trojan 50-344.
T Q \\TO O I W Mpp.
4 ORGANIZATION: AUMA REISTER KG MULHEIM, WEST GERMANY l
REPORT INSPECTION NO.:
99901334 I
RESULTS:
PAGE 2 of 8 l
A.
VIOLATIONS:
No violations were identified during this inspection.
B.
NONCONFORMANCES:
No nonconformances were identified during this inspection.
C.
UNRESOLVED ITEMS:
No unresolved items were identified during this inspection.
D.
INSPECTI0N FINDINGS AND OTHER COMMENTS:
1.
Background Information Auma Reister KG (Auma) has been designing and manufacturing electric motor driven actuators to operate valves for approximately 26 years. Auma has a branch factory in Osrfildern, a suburb of Stuttgart, where worm gear boxes, quarter turn actuators and small actuators are manufactured.
Representatives of Auma stated that they have supplied actuators for several industrial applications including fossil and nuclear power plants in several countries, including the United States.
Documents indicate that SAI and SAN type actuators successfully withstood the test requirements of Institute of Electrical and Electronic Engineers (IEEE) standards 323-1974, IEEE 344-1975, and IEEE 382-1972.
SAI type actuators, which have no aluminium on their housings, are suitable for installation inside the containments of nuclear power plants.
SAN type actuators are suitable for installation outsloe the containment. SAN and SAI type actuators were also qualified to meet Kern Tecnische Anlagen (KTA) requirements based on IEEE-382, IEEE-323, IEEE-467, EPRI NP-2129-1901. EPRI-1558, and KTA-3504.
Nine SAI type actuators were manufactured, tested, and supplied to operate stainless steel valves manufactured by Kerotest for installation in the Steam Generator Blowdown Modification System at the Trojan Nuclear Power Plant located in Portland, Oregon.
2.
Plant Tour The inspector toured the plant in the areas of machining, assembly, storage of purchased raterial, incoming receipt inspection, test
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I ORGANIZATION: AUMA REISTER KG MULHEIM, WEST GERMANY REPORT INSPECTION l
NO.:
99901334 RESULTS:
PAGE 3 of 8 area, and the research and development area where end-of-life tests are Deing performed. The inspector interviewed component assemblers, in-process roving quality control (OC) inspectors and test technicians, and deterniined that the individuals interviewed 1
were knowledgeable in the work they performed.
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3.
Quality Assurance Program
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The inspector reviewed the quality assurance (QA) program of Auma and determined that it basically meets the requirements of Appendix G to 10 CFR 50. The principal functions of the QA manager and his representatives are the following:
a.
Control of purchased materials, including audits of subvendors and receipt inspections on incoming material.
b.
First piece inspections and random sampling inspections thereaf ter on machined parts, including roving in-process inspections.
c.
Measurement and testing, including control of calibration.
d.
Functional testing.
e.
Final testing.
f.
Packaging ano shipping.
g.
QA documentation.
h.
Retention of documents.
4.
Reviews of Control of Purchased Materials All raw materials, including rotors and stators for motors, are purchased from vendors approved by the quality assurance department.
Periodic audits are required to be performed on these vendors.
Incoming receipt inspections are performed on material received.
Accepted material is adequately identified and transferred to an automated storeroom.
Components from the storeroom are retrieved by automated systems.
9' dRGAN12AT10N: AUMA~REISTER KG MULHEIM, WEST GERMANY REPORT INSPECTION NO.:
99901334 RESULTS:
PAGE 4 of 8 5.
Review of Inspections Performed The inspector observed the implementation of the inspection program in the following areas:
a.
Receipt Inspections Incoming receipt inspections are performed on all purchased components. Depending on the quantity and complexity, the components are either subjectea to 100 percent inspection or statistical sampling. Rotor and stator assemblies for electric motors are purchased from two vendors. Procedure KV-1-5-14-2 GB Revision 2, dated March 18, 1985, entitled " Incoming Goods -
Inspection of Motor Components for MDN/MDI Type Motors" is the applicable document used during receipt inspections. This procedure contains instructions for visual inspections and electrical test measurements. A check list attached to the procedure is required to be completed to document the results of the inspection. Rotors and stators failing to meet the established criteria are rejected and returned to the vendor.
b.
_In-process Inspections In-process inspections were being routinely performed by roving qu611ty control (QC) inspectors throughout the plant.
The inspector observed one cast iron component being inspected after being machined. The component was rejected for flaws on the machined surface, identified as a nonconforming item and segregated. The inspector observed dimensional checks being performed on a randomly selected component on which all the machining operations had been completed. The checks were being performed by a computer-assisted, automatic comparator machine in which the critical dimensions on the relevant drawing were programmed.
The QA manager informed the inspector that if a purchased component is identified to be defective and is rejected during in-process inspections, the component is returned to the vendor.
Inspections for the replacement components from the vendor are required to start from the initial step of the inspection procedure.
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'0RGANIZAT10N:
AUMA RE1 STER KG MULHEIM, WEST GERMANY l
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REPORT INSPECTION NO.:
99901334 RESULTS:
PAGE 5 of 8 i
l The measuring instruments used in the inspections were observed to have calibration stickers to indicate the date of calibration and the due date. The inspector observed that the calibration stickers on the measuring devices were current.
6.
Review of Corrective Action The inspector verified the implementation of the nonconformance process relative to rejected material by selecting a motor which was rejected on March 10, 1988.
Nonconformance Report (NCR) M175, dated June 8, 1988, identified that during the final tests of the motor assembly, serial _ number 1840120, the measured no-load current was observed to be between 2.7 and 4.5 amperes (A) instead of 2.6 A.
The 1.1 kilowatt (KW), 380 volt, 4 pole MDI 90/4-75 type motor was intended for LOOVISA Nuclear Power Plant in Finland.
The motor was purchased from Stahl Schmidt Company, Bielefeld, on March 10, 1988.
Auma returned the defective motor to the vendor on June 13, 1988 along with a copy of NCR 175.
The vendor examined the otor and determined that a winding in the starter was short circuited.
The vendor supplied a replacement starter with serial number 184720.
This motor was tested and determined to meet the specification requirements.
7.
Review of Quality Assurance Records The inspector reviewed the following quality assurance records relevant to the supply of nine SAI 25 type valve actuators to the Portland General Electric Company. The actuators are intended to operate stainless steel valve actuators manufactured by Kenotest installed in the modified Steam Generator Blow Down System at the Trojan Nuclear Power Plant located in Oregon. The serial numbers of the actuators are 4987-69293 to 4987-69301.
The quality assurance records were stored in two independent buildings.
a.
Inspection Records The inspection records consisted of the following documents:
1.
Incoming receipt inspection checklist to indicate that the electric motors received from the vendor were inspected to Procedures KV 1-5-14-2.
The motor windings have Class H insulation.
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t ORGAN 12ATf0N: AUMA-REISTER KG MULHEIM, WEST GERMANY REPORT INSPECTION NO.: 99901334 RESULTS:
PAGE 6 of 8 2.
Check list documenting the results of the final inspection of electrical motor assemblies performed to Procedure KV-1-5-15-2.
3.
Final test results of assembled motors to Procedure XV-1 17-2.
4.
Check lists documenting the results of tests performed in accordance to Procedure KV-1-3-33-0 Revision 0, dated November 11,'1987. This procedure, exclusively developed for the actuators supplied to Trojan, entitled " Final Test and Inspection of Auma Actuators Type SA/ SAN / sal" provideo instructions for the following tests:
a.
General instructions to follow the procedure.
b.
Visual inspection of the actuator.
c.
Insulation resistance test of the motor.
d.
high voltage test.
e.
Manual operation and automatic change over to electric drive on demand.
f.
Functional tests.
g.
Locked rotor current measurements.
h.
Output torque closing and opening, measured at 70 per-cent of nominal voltage (under voltage) and 110 per-cent nominal voltage (over voltage).
1.
Setting the torque switch and the limit switches for the open and close positions. Number of turns to operate the limit switch was nine.
j.
Air-tightness test.
k.
Check the operation of all options ordered.
i 1.
Final inspection.
m.
Inspection of painting.
K ORGANIZATION: AUMA REISTER KG l'
t p
y MULHEIM, WEST GERMANY t
REPOR.
INSPECT 10fl N0.: 999C1334 RESULTS:
PAGE 7 of C b.
Certifications The documentation contained the following certifications:
1.
Certification dated January 12, 1988 certifying that the.
calibration of electrical and mechanical instruments used in the testing of the actuators supplied to Trojan, were current and that the instruments were calibrated in accordance to Vereinigte Deutsche Ectrotechnische Verein (VDE) and Deutsche Industrie Normen (DIN), which are German standards.
2.
Certification dated January 12, 1988, stated that all material used in the manufacture of the Trojan actuators Was purchased by imposing the requirements of the Auma quality assurance manual. The subvendors were subjected to audits by Auma QA personnel.
3.
Certification to indicate that all inspection and test personnel were qualified and trainea.
Records of training given to individuals on various subjects were available.
c.
Review of Design Changes The inspector reviewed the design changes made in the manu-facture of Auma actuators after the actuators were qualified to the requirements of IEEE-323. IEEE-344, and IEEE-382 in 1979.
The only changes were in the materials used. The sealing material was changed from EPD to 70NBR because EPD started to swell when it came into contact with grease. To fabricate the support plate for the torque switch mechanism, X5 Cr Ni 189 type of material is being used instead of Al Mg 3F26, which was determined to be weak. The material for the pinion of the torque switch was changed from X12 Cr MOS 17 1-41-04 to X20 Cr 13 1-4021 because the latter was determined to be more resistant to wear. Auma had determined that the above changes do not invalidate the original seismic and environmental qualifications.
d.
Deviation Report One deviation report (DR), dated December 22, 1987, was included in the documentation package. The DR identified that parts list SSAI-01-02 indicated 2 x 19 Belleville springs are installed on the worm shaft of the SAI actuators. According to test i
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ORGAK12AT10N:.AUMA REISTER KG MULHEIM, WEST GERMANY REPORT INSPECTION NO.:
99901334 RESULTS:
PAGE 8 of 8 reports, TB-N 1-1-198, dated October 14, 1982 and R541/85/57, star washers were installed between the Belleville springs for the SAI-25 type actuator.
Corrective action recommended was to assemble the Belleville washers in accordance with the test reports.
E.
EXIT INTERVIEW:
The inspector met with persons identified in Section F and discussed the scope and findings of the inspection.
F.
PERSONS CONTACTED:
R. Dinse, Managing Director K. P. Herr, Technical Director, Sales H. Weber, Marketing Director G. Waldenmaier, Manager, Quality Assurance H. G. Woesner, Research Engineer i
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