ML20136F653
| ML20136F653 | |
| Person / Time | |
|---|---|
| Site: | Perry, Catawba, Harris, Grand Gulf, River Bend, Vogtle, San Onofre, Comanche Peak, Rancho Seco, Midland, Bellefonte, 05000000, Washington Public Power Supply System, Shoreham |
| Issue date: | 12/31/1985 |
| From: | Battelle Memorial Institute, PACIFIC NORTHWEST NATION |
| To: | NRC |
| Shared Package | |
| ML20136F482 | List: |
| References | |
| CON-FIN-B-2952 PNL-5718, NUDOCS 8601070458 | |
| Download: ML20136F653 (42) | |
Text
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PNL-5718 Technical Evaluation Report
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Review of Transamerica Delaval Inc.
Diesel Generator Owners' Group Engine Requalification Program Final Report December 1985 Prepared for the U.S. Nuclear Regulatory Commission under Contract DE-AC06-76RLO 1830 NRC FIN B2952 Pacific Northwest Laboratory Operated for the U.S. Department of Energy by Battelle Memorial Institute I
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8601070458 851231 PDR ADOCK 05000206 S
PDR t
DISCLAIMER
= This report was prepared as an account of work sponsored by an agency of the
. United States Government. Neither the United States Government nor any a
agency thereof, nor any of their employees, makes any warranty, express or
~ implied, or assumes any legal liability or responsibility for the accuracy, com-
~
- pleteness, or usefulness'of any information, apparatus, product, or process i
disclosed,or represents that its use would not infringe privately owned rights.
~
- Reference herein to any specific commercial product, process, or service by
' trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply Its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.
PACIFIC NORTHWEST LABORATORY operated by BATTELLE for the UNITED STATES DEPARTMENT OF ENERGY under Contract DE-AC06-76RLO 1830 O
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PNL-5718
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Technical Evaluation Report REVIEW 0F TRANSAMERICA DELAVAL INC.
DIESEL GENERATOR OWNERS' GROUP ENGINE REQUALIFICATION PROGRAM FINAL REPORT December 1985 Prepared for the U.S. Nuclear Regulatory Commission Division of Licensing Office of Nuclear Reactor Regulation under Contract DE-AC06-76RL0 1830 NRC FIN B2952 Project
Title:
Assessment of Diesel Engine Reliability / Operability NRC Lead Engineer:
C. H. Berlinger Pacific Northwest Laboratory Richland, Washington 99352 A
PACIFIC NORTHWEST LABORATORY PROJECT APPROVALS 9 C..
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o W. W. Laity, Project Manager f
Date Pacific Northwest Laboratory i
.I I L'l $'O f W0 W. D. Richmond, Chairman Date Senior Review Panel Pacific Northwest Laboratory 9
9 i11
(;:
FOREWORD This report is-supplied as part of the Technical Assistance Project, 6
Assessment of Diesel Engine Reliability / Operability being conducted for the U.S. Nuclear Regulatory Comission, Office of Nuclear Reactor Regulation, Division of Licensing, by the _ Pacific Northwest Laboratory. The U.S. Nuclear Regulatory Comission funded this work under authorization B8R 20-19-40-42-1 FIN No. 82952.
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CONTENTS PACIFIC NORTHWEST LABORATORY APPROVALS...................................
iii FOREWORD.................................................................
v ABBREVIATIONS............................................................
ix 1.0 INTR 000CTION.........................................................
1 1.1 PROJECT SC0PE...................................................
2*
1.2 REPORT PURP0SE..................................................
3 1.3 REPORT ORGANIZATION.............................................
3 2.0 PNL REVIEW 0F PHASE I - RESOLUTION OF GENERIC COMPONENT PROBLEMS............................................................
5 2.1 EVALUATION.....................................................
6 2.2 GENERAL CONCLUSIONS............................................
7 2.3 COMP 0NENTS THAT WARRANT SPECIAL EMPHASIS.......................
7 2.3.1 Connecting Rods for V-Block Engines.....................
8 2.3.2 DSR-48 Crankshafts......................................
8 2.3.3 OSRV-20 Crankshafts.....................................
9 2.3.4 Cy l i n d e r B l o c k s.........................................
9 2.3.5 Cy l i n d e r He a d s..........................................
9 2.3.6 Modi fi ed Type AF Pi ston Ski rts..........................
10 2.3.7 Turbochargers...........................................
10 3.0 PNL REVIEW 0F PHASE II - KEY ENGINE COMP 0NENT DESIGN REVIEW / QUALITY REVALIDATION.........................................
11 3.1 EVALUATION.....................................................
12
3.2 CONCLUSION
S....................................................
13 4.0 ENGINE TESTING AND INSPECTION.......................................
15 4.1 OSR-48 ENGINE TEST AT SHOREHAM NUCLEAR POWER STATION...........
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- 4. 2 DSRV-16 ENGINE TEST AT CATAWBA NUCLEAR STATION.................
16 4.3 DSRV-16 ENGINE TEST AT GRAND GULF NUCLEAR. STATION..............
16 4.4 ENGINE TEST CONFIRMING AE PISTON SKIRTS........................
17 4.5 E VALUATION AND CONCLUS IONS.....................................
17 5.0 E NGI NE MAI NTE NANC E AND SURVE ILLANCE.................................
19 5.1 EVALUATION.....................................................
19
5.2 CONCLUSION
S AND RECOMMENDATIONS................................
19 6.0 OVERALL CONCLUS IONS AND RECOMMENDAT IONS..............................
21 6.1 IMPLEMENTATION OF THE OWNERS' GROUP PROGRAM....................
21 6.2 TDI ENGINE ADEQUACY FOR NUCLEAR SERVICE........................
21 6.3 CONSIDERATIONS FOR NRC LICENSING...............................
23 REFERENCES...............................................................
25 APPENDIX A - THE PNL EVALUATION TEAM..................................... A.1 APPENDI X B - B IBLIOGRAPHY OF PNL REPORTS.................................
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ABBREVIATIONS ASLB Atomic Safety and Licensing Board BMEP brake mean effective pressure DEMA Diesel Engine Manufacturers Association DR/QR design review / quality revalidation FaAA Failure Analysis Associates M/S maintenance and surveillance NRC U.S. Nuclear Regulatory Commission PNL Pacific Northwest Laboratory SWEC Stone & Webster Engineering Corporation TDI Transamerica Delaval Inc.
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REVIEW 0F TRANSAMERICA DELAVAL INC.
DIESEL GENERATOR OWNERS' GROUP ENGINE REQUALIFICATION PROGRAM FINAL REPORT
1.0 INTRODUCTION
Since late February 1984, the Pacific Northwest Laboratory (PNL) has pro-vided technical support to the U.S. Nuclear Regulatory Commission (NRC) staff in addressing questions regarding the adequacy of Transamerica Delaval Inc.
(TDI) diesel generators to reliably serve as standby emergency power sources for nuclear stations. These questions were raised by a crankshaft failure in a TDI engine at the Shoreham Nuclear Power Station in August 1983, and other problems encountered with TDI diesels at other nuclear stations and in non-nuclear service.
In December 1983, 13 nuclear utilities that own TDI diesel generators formally established an Owners' Group to address concerns regarding the reli-ability and operability of these engines.
In March 1984, the Owners' Group published a plan for "...a comprehensive program which, through a combination of design reviews, quality revalidations, engine tests and component inspec-tions, will provide an in-depth assessment of the adequacy of the respective utilities' TDI engines to perform their intended safety related functions."
The Owners' Group program for engine requalification consisted of four major elements:
- 1) resolution of known problems with potentially generic implica-tions, 2) a design review and quality revalidation (DR/QR) effort aimed at identifying and correcting potential problems with the important engine com-ponents, 3) expanded engine testing and inspection, and 4) enhanced engine maintenance and surveillance (M/S) to maintain the qualification of the diesel engines for the lifetime of the nuclear plants that they service.
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1.1 PROJECT SCOPE In providing. technical support to NRC, the PNL project staf f, assisted by a number of diesel engine consultants, focused on the four major elements of the Owners' _ Group engine requalification program, addressing both generic and I
plant-specific areas.
PNL's first activity was to review the Owners' Group Program Plan (March 1984). The PNL review (PNL-5161, June 1984) addressed the critical elements required to establish TDI engine reliability and operability. That report also provided recommendations for criteria that NRC might use in licensing nuclear plants equipped with TDI engines prior to completion of the implementation of the Owners' Group program and final review by PNL and NRC of program findings.
The criteria recommended by PNL for NRC licensing consideration in the interim time period until the Owners' Group program was fully implemented were applied on a case-by-case basis for seven nuclear stations and reported in PNL-5201 (Grand Gulf), PNL-5211 (Catawba), PNL-5234 (Comanche Peak), PNL-5304 (San Onofre), PNL-5342 (Shoreham), PNL-5411 (Perry), and PNL-5485 (River Bend). The results of two of these plant-specific technical evaluations--the Shoreham and Perry nuclear plants--were presented by PNL consultants as expert witness testimony in hearings before the NRC Atomic Safety and Licensing Board (ASLB). While evaluating the plant-specific issues, PNL developed considerable relevant information on many key TDI engine components.
In parallel with the plant-specific evaluations, PNL completed its review i
of the Owners' Group efforts to resolve known problems (Phase I) and to evalu-ate the design and quality of all key installed engine components (Phase II).
PNL's review of the Owners' Group Phase I efforts is reported in PNL-5600 3
(December 1985). The PNL reviews of the Phase II efforts are documented in PNL-5336 (October 1985) and PNL-5444 (October 1985).
In conducting its generic and plant-specific evaluations, the PNL team visited most of the affected nuclear stations and viewed all of the various engine models, many of them when they were disassembled for component inspec-tions. Upon these occasions, the PNL team met with the cognizant plant
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technical and management staff. PNL staff and consultants also met with the Owners' Group staff in conjunction with their meetings on the TDI engine requalification activities.
PNL's conclusions regarding the adequacy of the TDI engines for nuclear service incorporate the information gained from all of the above evaluations and activities. The expert opinion and judgment of the PNL diesel consultants provided substantial guidance in formulating the conclusions.
1.2 REPORT PURPOSE A primary purpose of this final summary report is to document PNL's over-all assessment of the implementation of the Program Plan by the Owners' Group.
This report also summarizes the conclusions and observations of PNL and its consultants regarding the adequacy of the TOI engines for nuclear service.
In addition, this report is intended to serve as a useful guide and reference for the cognizant NRC staff who will be called upon for future licensing actions and other reviews involving nuclear power plants with TDI engines.
1.3 REPORT ORGANIZATION This report is organized as follows.
Section 2.0 documents PNL's evalua-tion of the Owners' Group resolutian of the generic component problems.
Section 3.0 similarly summarizes PhL's eva'luation of the Owners' Group design review / quality revalidation program. Section 4.0 reviews engine testing and inspection results that are relevant to conclusions on TDI engine adequacy.
Section 5.0 reviews the Owners' Group maintenance and surveillance plans aimed at ensuring future engine reliability.
Finally, Section 6.0 presents PNL's overall conclusions and recommendations regarding implementation of the Owners' Group program and the resulting suitability of the TDI R-4 and RV-4 series engines to perform their intended function as emergency standby power sources at nuclear plants.
Appendix A lists the PNL project team participants. The PNL reports issued during this project are listed in Appendix B.
3
2.0 PNL REVIEW 0F PHASE I - RESOLUTION OF GENERIC COMPONENT PROBLEMS Phase I of the Owners' Group program consisted of identifying and resolv-ing significant engine component problems that had potentially generic implica-tions. Through an exterisive rev ew of TDI and other engine performance data in both nuclear and non-nuclear applications, the Owners' Group identified 16 such components:
e air start valve capscrews e engine base and bearing caps e connecting rods e engine mounted electrical cable e high pressure fuel injection tubing o connecting rod bearing shells e crankshafts e jacket water pump e cylinder block e piston skirts e cylinder heads e push rods e rocker arm capscrews e cylinder head studs cylinder liners (a) e turbochargers e
The Owners' Group recomended that problems with these components be resolved before the TDI engines were placed in service to support full-power nuclear plant operation. To resolve the known problems with these components, the Owners' Group contracted with Failure Analysis' Associates (FaAA - Palo Alto, California) and Stone & Webster Engineering Corporation (SWEC - Boston, Massachusetts) to perform extensive design reviews. Each component was addressed by these consultants in one or more design review documents.
Each design review report includes, as appropriate, materials evaluations, load and stress analyses, fracture and fatigue analyses, and evaluations of required maintenance and surveillance. Based on these reviews, the Owners' Group arrived at conclusions regarding the basic adequacy of the 16 components with known problems, and recommended actions that should be taken by the engine owners.
(a) Combined with cylinder block in Owners' Group evaluations.
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2.1 EVALUATION PNL's review of the 16 components with known problems went well beyond the information provided in the Owners' Group Fhase I reports. The following factors all were instrumental in formulating PNL's final conclusions and recommendations regarding the adequacy of those components:
e review of Owners' Group reports - Each design review report was evaluated by two or more PNL consultants and, as appropriate,'by PNL staff specialists in metallurgy, stress analysis, and nondestructive examination.
e meetings and discussions with Owners' Group representatives -
Questions and concerns raised by PNL reviewers were resolved through meetings with the Owners' Group and NRC, and through written and telephone communications with the Owners' Group and their diesel consultants or design analysis teams (SWEC and FaAA).
e licensing evaluations - Relevant information concerning component performance was developed in connection with plant-specific reviews done in support of NRC licensing evaluations.
engine test results - Information was developed from operating exper-e ience with TDI engines in nuclear and non-nuclear service. This included preoperational testing and component inspections at a number of nuclear sites, including most notably engine endurance testing using a Shoreham OSR-48 engine and DSRV-16 engines at the Catawba and Grand Gulf nuclear plants, as well as data from TDI R-5 test engine tests employing AE piston skirts.
e consultant judgment - PNL employed the experience and judgment of national and international consultants with well-established reputa-tions in diesel engine technology (see Appendix A). These consul-tants applied a wide range of knowledge gained from diesel engine design, installation, operatior., maintenance, and problem-solving experiences to the reviews of the 16 components.
Although PNL's role was not to conduct extensive independent analyses, it was sometimes necessary for PNL to perform calculations or analyses to 6
facilitate reaching conclusions on key issues. For example, PNL performed computer analyses of crankshaft torsional vibrations to use in evaluating the Owners' Group conclusions regarding crankshaf t adequacy.
2.2 GENERAL CONCLUSIONS Based on its evaluations, PNL concludes that the Owners' Group has estab-lished a technical basis for the utilities to qualify all of the components with known problems (i.e., Phase I components) for nuclear service. The details of PNL's review and conclusions are documented in PNL-5600 (December 1985). Further, PNL believes that the organized approach taken by the Owners' Group in addressing the Phase I component problems would be effective in addressing future componer ? concerns of generic interest.
PNL concludes that the Owners' Group analyses and testing, recommended component modifications, and recommended maintenance and surveillance actions provide a sufficient basis to qualify most components for their intended service at the full TDI engine rating [ corresponding to an engine brake mean effective pressure (BMEP) of 225 psig] and at 10% overload conditions as required for surveillance testing.
In other cases, the Phase I components are considered adequate for nuclear service with load limitations and/or additional maintenance and surveillance actions that warrant special emphasis. The next section provides a summary discussion regarding those components that warrant special emphasis.
2.3 COMPONENTS THAT WARRANT SPECIAL EMPHASIS The detailed evaluations of the Phase I components has identified seven for which PNL recommends special considerations, most going beyond those of the Owners' Group.
PNL believes that any changes to the conditions of service and enhanced. maintenance and inspections identified in the following subsections should be subject to NRC review before they are implemented at nuclear power plants.
7
2.3.1 Connecting Rods for V-Block Engines PNL recomends special maintenance and surveillance of elements of the V-connecting rod box for connecting rods with either'l-7/8-inch or 1-1/2-inch bolts. These additional actions are recomended because of the mixed results of known non-nuclear service experience, the limited fatigue margin indicated by the Owners' Group analysis, and the difficulties inherent in inspecting for critical flaws. The PNL recommendations are detailed in Section 4.4.5.4 of PNL-5600. They include preservice inspections and periodic inspections at times of engine disassembly.
2.3.2 DSR-48 Crankshafts In PNL's opinion, analyses performed on behalf of the Owners' Group were insufficient to provide an unequivocal basis for establishing the adequacy of the DSR-48 crankshaft for unlimited service at or above 3300 kW, even though the engines were rated by TDI for 3500-kW continuous service. To confirm the adequacy of the crankshafts for engine loads enveloping the maximum emergency load requirements for the Shoreham engines, an endurance test consisting of 740 hours0.00856 days <br />0.206 hours <br />0.00122 weeks <br />2.8157e-4 months <br /> at loads at and above 3300 kW was conducted with a DSR-48 engine at the Shoreham plant. This test qualified the Shoreham engine crankshafts for long-term service at 3300 kW, corresponding to a BMEP of 212 psig. As a result of Atomic Safety and Licensing Board hearings on the Shoreham engines (ASLB June 1985), PNL recommendations were adopted regarding engine load limitations and periodic crankshaft inspections. These recommendations are described in Section 4.6.5.3 of PNL-5600.
Using the results of the Shoreham endurance test, PNL concluded that the crankshafts at the River Bend Station were suitable for operation up to loads of 3130 kW. This somewhat lower load than Shoreham's 3300 kW reflects evalu-ated' differences in the torsional system and 'the crankshaft material properties (PNL-S485, July 1985).
PNL-recommended load limits and maintenance and sur-veillance actions pertaining to the River Bend engines are provided in Section 4.6.7.2 of PNL-5600.
PNL recommends that other DSR-48 engines with crankshafts of the same design (e.g., Rancho Seco plant) be qualified for service following actions 8
identified in Section 4.6.8 of PNL-5600. These actions relate to 1) the establishment of a " qualified" load through preservice torsiograph testing and analysis, 2) verification of crankshaft materials and quality, and 3) pre-service testing.
2.3.3 DSRV-20 Crankshafts The DSRV-20 crankshafts at the San Onofre Nuclear Generating Station were determined to have undesirable torsional responses during startup and shutdown operations. Based on extensive analysis, and subject to recommended periodic inspections, restrictions on engine operations, and condition monitoring
' identified in Section 4.8.5.6 of PNL-5600, PNL concluded that these crankshaf ts were adequate for continued service. Of particular note is the PNL recommen-
.dation that actions be promptly undertaken to establish a torsional system with improved ' characteristics.
2.3.4 Cylinder Blocks Operating experience and Owners' Group analysis confirm the potential for
. service-induced cracks to occur in TDI cylinder blocks.
However, PNL concluded that the TDI cylinder clocks were adequate, subject to special meintenance and surveillance conditions regarding inspections for crack initiation and periodic monitoring for crack propagation.
PNL recommendations, which are consistent with the Atomic Safety and Licensing Board findings, are provided in Sec-tion 4.9.5.2 of PNL-5600.
2.3.5 Cylinder Heads Operating experience has shown the potential for cylinder head cracks and leakage, particularly.in heads fabricated prior to September 1980. PNL has concluded that these problems are adequately understood and are indicative of
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manufacturing defects rather than design deficiencies. The following special cylinder head maintenance and surveillance actions are recommended:
- 1) cylin-der heads with through-wall weld repairs of the fire deck should not be placed in nuclear service if the repair is from one side only, and 2) the engine should be air-rolled with the cylinder cocks open following each engine opera-tion and immediately prior to planned starts, in accordance with the schedule provided in Section 4.10.4.3 of PNL-5600.
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2.3.6 Modified Type AF Piston Skirts PNL has concluded that adequacy of the design of the modified AF piston skirts for unlimited service at 225 psig BMEP (i.e., the rated load) has not
.been unequivocally proven by analyses, testing, or operating experience. PNL i
has, however, concluded that, subject to initial and periodic inspections detailed in Section 4.16.4.3 of PNL-5600, these piston skirts can operate reliably at engine loads corresponding to 116 psig BMEP, which is well below the manufacturer's engine BMEP of 225 psig. This conclusion was based on the operating experience and piston inspection results at San Onofre and the suc-cessful operating experience with these pistons in a similar DSRV-20 engine at Homestead, Florida (see Section 4.16.4.1 of PNL-5600). PNL recommends that NRC approval'of a request for higher loadings on these pistons be given only after NRC review of the results of endurance testing (740 hours0.00856 days <br />0.206 hours <br />0.00122 weeks <br />2.8157e-4 months <br /> at 450 rpm) at the i -
requested higher loading.
2.3.7 Turbochargers Elliott Model 65G and 90G turbochargers have experienced excessive thrust bearing wear, and there have been reported failures in Model 90G nozzle ring components at nuclear installations (PNL-5600, December 1985). As a a result of the turbocharger operating history, special maintenance and surveillance actions are recommended (see Section 4.19.4.3 of PNL-5600). These recommenda-tions _ deal with operating conditions, monitoring, maintenance, and inspection. PNL also recommends that the owners of TDI engines in nuclear service promptly undertake actions leaoing to redesign of the turbocharger inlet nozzle ring assembly to prevent nozzle vane failures.
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i 3.0 PNL REVIEW 0F PHASE II - KEY ENGINE COMPONENT DESIGN REVIEW / QUALITY REVALIDATION The design review / quality revalidation effort, Phase II of the Owners' Group TDI engine requalification program, was undertaken to provide a compre-hensive means for examining each utility's engines and to assess each engine's ability to reliably perform its intended design function.
This entailed Owners' Group review of key engine components through a process that considered the design and quality attributes of each component, the role of each component in the overall operation of the engine, known nuclear and non-nuclear operating experience and performance data, and the engineering judgment of the Owners' Group Component Selection' Committee. The examinations and reviews were conducted by a centralized team of engineering personnel with specialized skills in appropriate fields that included diesel engine and generator design, operation, and manufacture, as well as destructive and nondestructive
-inspection techniques.
Phase II was implemented as a stepwise progression of activities. The first was the selection of components from each engine that warranted special reviews. Next, the engine components selected were subjected to either a design review,'a quality revalidation (review of material, manufacturing, and assembly quality), or both, depending on the importance of the component to engine operation. When these reviews were completed by consulting engineers and site personnel, the Owners' Group technical staff reviewed and approved the inspection results, document packages, design review findings, and calculation results. The Owners' Group also reassessed maintenance and surveillance (M/S) i plans aimed at ensuring continued reliable performance of the component.
The Owners' Group performed extensive Phase II reviews for all TDI engines at existing and planned nuclear plants. Component design reviews performed for one plant were often applicable to other engines with similar components.
In those instances, the design reviews were done by reference to earlier DR/QR reports, namely the Shoreham Nuclear Power Station for the DSR-48 engines and the Comanche Peak Steam Electric ' Station for the DSRV-16 engines. The quality revalidation, however, was necessarily plant-specific.
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3.1 EVALUATION As discussed in PNL-5161, in light of deficiencies in TDI's quality assurance program identified by the NRC vendor inspection program, PNL concurred that the Phase 11 effort was necessary to establish the adequacy of the design and quality of key engine components.
In evaluating the Owners' Group Phase II efforts, PNL reviewers examined three areas:
completeness - Each of four PNL consultants independently identified e
up to 20 components whose importance to engine reliability and operability would warrant their inclusion in the design review / quality revalidation effort. The resulting lists were then compared with the Owners' Group-generated list of components to judge the thoroughness of-the Owners' Group effort.
adequacy - Three PNL consultants examined the Owners' Group DR/QR e
reports for the two TDI engine models comprising all but one of those in service in Owners' Group plants. These were the DSR-48 and DSRV-16 engines at the Shoreham and Comanche Peak nuclear plants, 4
respectively. These were the first reports provided by the Owners' Group for these engine models and are the most comprehensive with respect to design review information.
In this examination, the PNL consultants reviewed the Owners' Group information for up to 50% of each plant's engine components. This audit-type review included an evaluation of the appropriateness of the design review performed and the quality revalidation action taken by the Owners' Group on each of the selected components. The PNL team conducted onsite reviews of site-specific backup documentation for many components, encompassing records of inspection findings and their disposition, details of design calculations, and quality assurance records.
In many cases, PNL's onsite reviews coincided with engine disassemblies, so the PNL team was able to view some engine components first-hand. Questions generated by these reviews and assessments were discussed with the Owners' Group and plant engineering staff in meetings held at the respective plant sites.
12
e maintenance and surveillance plan - The PNL consultants reviewed the adequacy of the M/S recommendations identified by the Owners' Group for the audited components. These special revi.ews augmented the general reviews of the M/S plans done in connection with plant-specific licensing actions for the Shoreham and Comanche Peak nuclear plants, reported in PNL-5342 and PNL-5234, respectively. Further comments on the N/S reviews are provided in Section 5.0 of this report.
In all of these reviews, the experience and judgment of PNL's diesel engine consultants were key elements in establishing the bases for PNL's conclusions.
Details of the audit reviews of the Owners' Group Phase II efforts for the Shoreham and Comanche Peak plants are provided in PNL-5336 (October 1985) and PNL-5444 (October 1985), respectively.
3.2 CONCLUSION
S Based on these audit reviews, PNL concludes that the Owners' Group design review / quality revalidation efforts have fulfilled the intent of the Owners' Group Program Plan, which is to establish "... reasonable assurance of the ability of the TDI engines to provide reliable backup power supplies for nuclear power plant service".
In particular, the completeness of the Owners' Group Phase II study was confi rmed. PNL evaluators found that all the components determined by PNL consultants to warrant inclusion in the Phase II effort had been addressed by the Owners' Group in both of the reviewed plants. PNL also noted that most of the components listed by PNL's consultants had been subjected to both a design review and a quality revalidation by the Owners' Group.
PNL found that the Owners' Group had adequately addressed the design and/or quality aspects of all the components included in the audit-type reviews for both plants. From the review of adequacy of the Owners' Group maintenance recommendations for the audited components, PNL concludes that the maintenance 13
'6; plan as proposed is acceptable. During their review of the Owners' Group M/S recommendations for the audited components, the PNL consultants did identify additional areas which, in their engineering judgment, would represent improve-ments for a total of 7 components of the 150 reviewed for both plants (see Section 4.0 of PNL-5336 and Section 4.0 of PNL-5444). Failure to accomplish these items would not seriously affect engine operability; however, PNL feels that, on the basis of good engineering practice, the engine owners should incorporate these recommendations into their M/S plans as they apply to the DSR-48, DSRV-16, and DSRV-20 engines.
Based on the audit reviews of the comprehensive Owners' Group Phase II reports for the two selected plants, PNL concludes that no further detailed reviews of Phase II reports need be done. This conclusion is based on the favorable results of the two reviews and a cursory examination of other Owners' Group Phase II reports. This latter examination confirmed the continued quality of the Owners' Group quality revalidation effort and verified that a high degree of overlap exists between the Owners' Group Phase II design review information pertaining to similar engine models, rendering a detailed review unnecessary and overly redundant.
PNL concludes that implementation of the Owners' Group recommendations in the Phase II reports will be effective in improving and ensuring the design adequacy and quality of the engine components and, hence, the reliability and operability of the TDI engines at the various Owners' Group nuclear plants.
PNL therefore recommends that each individual owner faitnfully implement all Owners' Group recommendations stemming from the Phase II evaluations.
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4.0 ENGINE TESTING AND INSPECTION Operating experience, both nuclear and non-nuclear, was an important con-sideration in both the Owners' Group and PNL evaluations of the design adequacy of the major engine components. Most nuclear experience to date consists of surveillance testing done in compliance with NRC Regulatory Guide 1.108 (Rev. 1). However, there have been notable endurance tests with a DSR-48 engine at Shoreham and with DSRV-16 engine at Catawba and Grand Gulf Nuclear Stations that provide significant evidence that key engine components of TOI DSR and DSRV engines are not subject to early fatigue or failure.
In addition to these tests, TDI conducted extensive tests with their R-5 test engine at loads that provide important data pertaining to the adequacy of AE piston skirts. These endurance and TDI engine tests are summarized below in Sec-tions 4.1 through 4.3.
PNL conclusions drawn from these tests are provided in Section 4.4.
4.1 DSR-48 ENGINE TEST AT SH0REHAM NUCLEAR POWER STATION 7
A 740-hour endurance test (corresponding to 10 stress cycles for the crankshaft) of or.e of the three DSR-48 engines at the Shoreham plant was con-ducted at loads at and above 3300 kW, which bounds the maximum emergency ser-
'vice loads for these engines at Shoreham. This test was conducted to qualify the crankshaft for long-term service at 3300 kW because available analytical evidence alone was not considered an unequivocal basis for qualification.
No problems were experienced that affected engine operation at any time during this test, and the test load of 3300 kW was subsequently established as the
" qualified" load for licensing considerations.
PNL staff and consultants independently audited the condition of key engine components during the post-test inspections. These key components included the piston skirts and crowns, piston rings, cylinder heads, turbo-chargers, cylinder liners, crankshaft, main and connecting rod bearing shells, and engine block. The components audited by the PNL reviewers exhibited no evidence of deficiencies resulting from their exposure during the cnnfirmatory tests, and Long Island Lighting Company's nondestructive examinations of the 15
crankshaft revealed no rejectable indications on critical surfaces. Rather, the good condition of the components provided convincing evidence that they had operated normally throughout-the test.
4.2 DSRV-16 ENGINE TEST AT CATAWBA NUCLEAR STATION In a test program completed in March 1984, the 1A diesel generator at Catawba was operated for more than 800 hours0.00926 days <br />0.222 hours <br />0.00132 weeks <br />3.044e-4 months <br />. For approximately half of those hours, the engine load was equal to or greater than 5800 kW. The IB engine was operated for more than 750 hours0.00868 days <br />0.208 hours <br />0.00124 weeks <br />2.85375e-4 months <br /> in a test program completed in July 1984, at loads that exceeded the maximum emergency service load requirement of 5714 kW for nearly all of the accumulated hours. During these tests, neither engine experienced any problems that adversely affected continued operation or pre-vented meeting emergency load requirements.
The engines were subsequently disassembled, inspected, and reassembled in accordance with Duke's quality assurance program, primarily by Duke personnel.
Significant findings during the post-test inspections of the 1A and 1B engines involved several components of the same type that had experienced problems previously in other TDI engines (e.g., type AN piston skirts, turbocharger thrust bearings, Group I cylinder heads). Actions were taken to resolve all findings in accordance with recommendations of the Owners' Group.
4.3 DSRV-16 ENGINE TEST AT GRAND GULF NUCLEAR STATION Mississippi Power & Light Company operates two DSRV-16 engines at the Grand Gulf Nuclear Station Unit 1.
One of these engines has accumulated over 840 operating hours, with approximately half of those hours at or above the full 7000-kW engine nameplate rating.
Inspection of the key components of that engine following this testing revealed that the only significant damage was to the turbocnarger (broken bolts and missing vanes, worn thrust bearing). This damage preceded installation of a modified turbocharger lubrication system and was also, in part, caused by vibrations that were subsequently eliminated by realignment of the turbocharger support structure.
16
4.4 ENGINE TEST-CONFIRMING AE PISTON SKIRTS A test of the type AE piston skirts was performed at TDI, empicying their R-5 prototype engine. Two test AE piston skirts were operated for 622 hours0.0072 days <br />0.173 hours <br />0.00103 weeks <br />2.36671e-4 months <br /> at 302 psig BMEP (compares with 225 psig BMEP for full rated engine loading for the engines in nuclear service). Subsequent inspection by Failure Analysis Associates revealed no relevant indications.
4.5 EVALUATION AND CONCLUSIONS PNL considers the engine tests and inspections reported in Sections 4.1 through 4.4 sufficient to uncover'the major problems with these model TOI engines in. nuclear service applications. The Shoreham 740-hour endurance test in particular confirmed the adequacy of the Shoreham crankshaft, from a fatigue endurance standpoint, for unlimited operation at 3300 kW.
It.also forms a basis for assessing the adequacy of other DSR-48 crankshafts (see Sec-tion 2.3.1).
Similarly, the TDI R-5 tests demonstrated the adequacy of the AE piston skirts for unlimited service at the engine manufacturer's full rated
. engine loads corresponding to 225 psig BMEP.
PNL notes that its recormandation for all DSRV-16 engines requiring licensing actions to date has been to limit the engine load to that correspond-ing to 185 psig BMEP (viz., PNL-5201, 5211, and others). This restriction was established by the available data on AE piston skirts when the plants were reviewed. The results of TDI's R-5 endurance test provide the basis for lift-ing this generic load restriction. Considering this and the results of the
- Catawba and Grand Gulf operating experience, and the implementation of an enhanced maintenance and surveillance program, PNL concludes that there is now a sufficient basis to qualify DSRV-16 engines for their full-rated load and for overloads allowed by the manufacturer.
t i
17 1
i
5.0 ENGINE MAINTENANCE AND SURVEILLANCE PNL views the implementation of a comprehensive maintenance and surveil-lance (M/S) plan to be a key element of the overall effort to establish and maintain TDI diesel engine reliability and operability. Such a plan contrib-utes to continued satisfactory engine performance and facilitates the timely 4
identification of potential engine problems.
As a result of their generic Phase I and Phase 11 component reviews, the Owners' Group developed an M/S plan applicable to each member utility's engines. This plan for each plant, which supplements the existing TDI Instruc-tion Manual, was developed by the Owners' Group from 1) their detailed review of each component's service history, 2) TDI Service Information Memos and cor-respondence on specific components, and 3) the Owners' Group technical reviews done during the Phase II DR/QR reviews. The final Owners' Group recommenda-tions are documented in Appendix II of the design review / quality revalidation report for each plant. Each individual utility subsequently considers the Owners' Group recommendations to establish a final M/S plan applicable to their engines.
5.1 EVALUATION In connection with its review of the Owners' Group Phase I resolution of component adequacy, PNL performad detailed evaluations of the M/S requirements for the Phase I components.
In addition, PNL evaluated the Owners' Group Appendix II maintenance and surveillance plans for representative engine models, namely, two DSR-48 engines (Shoreham and River Bend) and one DSRV-16 engine (Comanche Peak). PNL also examined the Appendix II plan for other engines to determine overall content and coverage.
5.2 CONCLUSION
S AND RECOMMENDATIONS Based on the reviews and evaluations just discussed, PNL concludes that a satisfactory maintenance and surveillance-program for nuclear standby applica-tions of TDI R-4 and RV-4 series engines should consist of the following elements:
19
e the recommendations concerning operation, testing, inspection, maintenance, adjustment overhaul and repair of the engine as incorporated in the TDI Instruction Manual e the maintenance and surveillance recommendations developed by the Owners' Group in Appendix II of the DR/QR reports e PNL maintenance and surveillance recommendations stemming from its generic Phase I review (i.e., PNL-5600)
PNL recommendations pertaining to surveillance monitoring while the e
engine is in the standby condition and during operations (i.e.,
Tables 4.3 and 4.4 of PNL-5304) - The PNL recommendations are considered supplemental to the TDI and Owners' Group surveillance recommendations.
In view of the essential similarity among the plans for a given engine model and between the DSRV-16 and DSRV-20 engine components (except the crank-shaft, piston skirts, and turbochargers, which were considered separately), PNL concluded that no further reviews were necessary. PNL has recommended that changes to maintenance and inspection conditions for certain Phase I components be reviewed by NRC prior to their implementation by the utilities (see Sec-tion 2.3).
PNL also believes it would be prudent for the utilities to estab-lish a basis for an independent review of other changes to established maintenance and surveillance plans.
20
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6.0 OVERALL CONCLUSIONS AND RECOMMENDATIONS This section presents PNL's overall conclusions.regarding the Owners' Group Program and the Owners' Group findings stemming from this program. PNL's conclusions and recommendations regarding the adequacy of the TDI R-4 and RV-4 series engines to serve as emergency standby power sources at nuclear plants and considerations relating to NRC licensing are also summarized in this section.
6.1 IMPLEMENTATION OF THE OWNERS' GROUP PROGRAM PNL concludes that the Owners' Group Phase I effort, aimed at identifying technical resolutions to known generic problems, has accomplished its objec-tives. PNL likewise concludes that the Owners' Group Phase II effort, aimed at verifying the design adequacy and confirming the quality attributes of the critical engine. components, has been conscientiously undertaken. With the completion of the planned engine disassemblies, inspection and resolution of findings for all nuclear utility TDI engines, and the implementation of the baseline M/S plan (see Section 5.2) PNL also considers the Phase II program will be successfully completed.
The Owners' Group Phase I and Phase II efforts have resulted in recommen-dations for 1) component inspections, 2) component design or installation modi-fications, 3) parts replacements, 4) load limitations on certain engine models, and 5) enhanced maintenance and surveillance programs. Many of these recommendations have been implemented by some utilities.
PNL understands that all utilities will implement the Owners' Group recommendations before restart from the first refueling outage, unless otherwise approved by NRC.
6.2 TOI ENGINE ADEQUACY FOR NUCLEAR SERVICE Based on the results of the Owners' Group Phase I and Phase II efforts, PNL' concludes that the Owners' Group has established a sufficient basis for confidence in the adequacy of the TDI R-4 and RV-4 engine models reviewed to serve as nuclear standby power sources.
In the case of the DSRV-16 engines, this conclusion applies to engine operations up to full rated load (7000 kW) 21 4
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I and at 10% overload conditions as may be required for surveillance testing.
As discussed be!ow, PNL recommends that load restrictions be placed on the TDI modei DSR-48 and DSRV-20 engines.
It is important to note that these PNL conclusions recognize the need for dealing with individual TDI diesel installations,s well as with the generic issues, For example, individual installations involve unique loadings on crankshafts, which impose site-specific limitations on the recommended maximum engine loading. Als, differences in certain engine components among sites require special considerations and, in some cases, load limitations. Table 6.1 provides a list of those components deemed by PNL to require special emphasis to ensure their satisfactory service. Further discussion is presented in Section 2.3; the supporting details are included in Section 2.0 of PNL-5600.
PNL recommends that any changes to the special considerations identified in TABLE 6.1.
Components Requiring Engine Load Limits and/or Special Routine Maintenance and Surveillance Special Maintenance Engine and Component Load Limited Surveillance Required Crankshaft DSR-48 Yes(a)
Yes DSRV-20 Yes Yes Cylinder block DSR-48 (Shoreham)
No Yes DSRV-16 (Comanche Peak)
No Yes Cylinder heads No Yes Connetting rods DSRV engines No Yes Piston skirts Type AF Yes Yes Turbocharger No Yes (a) Limitations on engine testing have been established to minimize crankshaft torsional stresses during startup transients.
22
Table 6.1 be subject to review by the NRC before they are implemented at the nuclear power plants. PNL also believes it would be prudent for the utilities to establish an independent review process to implement changes in their established maintenance and surveillance plans.
6.3 CONSIDERATIONS FOR NRC LICENSING In order to fully qualify TDI engines for nuclear Sarvice, PNL recommends the following:
e Phase I component adequacy - The utility applicant should implement the pertinent Owners' Group recommendations and PNL recommendations in PNL-5600 for Phase I components.
- Phase II component quality confirmation - A qua71ty revalidation inspection of the key engine components should un completed, and any applicable recommendations should be implemented in accordance with Owners' Group recommendations, e - preoperational testing - The engines must satisfactorily meet the existing NRC and manufacturer's preoperatiqnal test requirements con-firming engine readiness for service.
maintenance / surveillance plans - NRC-h;D?bved maintenance and e
surveillance plans must be in place.
If the maximum emergency service load requirement exceeds loads for which there is confidence in the engine's ability to perform reliably, based either on the results of engine testing of a directly comparable engine or upon conservative design analysis, then special endurance testing may be required.
Likewise, if analysis of torsiograph tests, identified by PNL as needed for one each of comparable TOI engines at every nuclear plant, show stresses in excess of Diesel Engine Manufacturers Association (DEMA) or other NRC-recognized standards, the engine loads must be reduced, the engine torsional system must be modified to reduce the stresses to allowable values, or NRC-approved enhanced maintenance and surveillance must be established.
1 23
( -
REFERENCES Atomic Safety and Licensing Board. June 14, 1985.
Partial Initial Decision on Engineering Diesel Generators.
In the matter of Long Island Lighting Company, Shoreham' Nuclear Power Station, Unit 1, Docket No. 50-322-0L, LBP-85-18.
Pacific Northwest Laboratory. February 1985. A Review of the Operability and Reliability of Transamerica Delaval, Inc., Diesel Generators at Perry Nuclear Power Plant Unit 1.
PNL-5411, Richland, Washington.
Pacific Northwest Laboratory. June 1984. Review and Evaluation of TDI Diesel Generator Owners' Group Program Plan. PNL-5161, Richland, Washington.
Pacific Northwest Laboratory. August 1984. Review and Evaluation of Transamerica Delaval, Inc., Diesel Engine Reliability and Operability -
Catawba Nuclear Station Unit 1.
PNL-5211, Richland, Washington.
. Pacific Northwest Laboratory.
September 1984. Review and Evaluation of i
Transamerica Delaval, Inc., Diesel Engine Reliability and Operability -
4 Comanche Peak Steam Electric Station Unit 1.
PNL-5234, Richland, Washington.
I Pacific Northwest Laboratory. July 1984.
Review and Evaluation of l
Transamerica Delaval, Inc., Diesel Engine Reliability and Operability - Grand Gulf Nuclear Station Unit 1.
PNL-5201, Richland, Washington.
Pacific Northwest Laboratory. July 1985. Review and Evaluation of Transamerica Delaval, Inc., Diesel Engine Reliability and Operability - River Bend Station Unit 1.
PNL-5485, Richland, Washington.
Pacific Northwest Laboratory.
November 1984. Review and Evaluation of Transamerica Delaval, Inc., Diesel Engine Reliability and Operability - San Onofre Nuclear Generating Station Unit 1.
PNL-5304, Richland, Washington.
Pacific Northwest Laboratory.
December 1984. Review and Evaluation of Transamerica Delaval, Inc., Diesel Engine Reliability and Operability -
Shoreham Nuclear Power Station Unit 1.
PNL-5342, Richland, Washington.
Pacific Northwest Laboratory. October 1985. Review of Design Review and Quality Revalidation Report for the Transamerica Delaval Diesel Generators at Comanche Peak Steam Electric Station Unit 1.
PNL-5444, Richland, Washington.
Pacific Northwest Laboratory. October 1985. Review of Design Review and Quality Revalidation Report for the Transamerica Delaval Diesel Generators at Shoreham Nuclear Power Station Unit 1.
PNL-5336, Richland, Washington.
Pacific Northwest Laboratory. December 1985. Review of Resolution of Known Problems in Engine Components for Transamerica Delaval Diesel, In c.,
PNL-5600, Richland, Washington.
TDI Diesel Generator Owners' Group. March 2, 1984. TDI Diesel Generator F
Owners' Group Program Plan.
25
i 9
APPENDIX A THE PNL EVALUATION TEAM 4
9
APPENDIX A THE PNL EVALUATION TEAM The following PNL staff members and consultants participated in the assessment of TDI diesel engine reliability and operability.
PNL STAFF Name Principal Area of Contribution W. D. Richmond Chairman, Senior Review Panel L. D. Williams Member, Senior Review Panel C. H. Hill Member, Senior Review Panel F. Albaugh Member, Senior Review Panel Walter W. Laity Project Manager David A. Dingee Deputy Project Manager i
J. M. Alzheimer Stress Analysis S. H. Bush (a)
Metallurgy J. B. Calhoun Subcontracting M. Clement Engineering Support A. J. Currie Technical Editor S. D. Dahlgren(b)
Metallurgy R.. E. Dodge Engineering Support and Computerized Data Filing (a) For most of the time on this project Dr. Bush was a private consultant
. employed by Review and Synthesis Associates, Richland, Washington.
Dr. Bush is currently a Battelle employee.
(b) Currently employed by Boeing Cmanercial Airplane Division, Seattle, Washington.
A.1
.~..-
Name Principal Area of Contribution K. L. Filsinger-Word Processing W. B. Gintner Project Administration R. I. Laidler.
Secretary J. F. Nesbitt Engineering Support J. C. Spanner Nondestructive Evaluations L. G..VanFleet Nondestructive Evaluation F. R. Zaloudek Engineering Support CONSULTANTS Name Company Address H. Engja Norwegian Marine Technology Research Institute A/S Haakon, Haakonsonsgt. 34 P.O. Box 4125 Valentinlyst N-7001 Trondheim, Norway
. H. M. Hardy H. M. Hardy 100 Carolina Avenue Seneca, SC 29678 A. J. Henriksen A. J. Henriksen, Inc.
7731 N. Fairchild Avenue Fox Point, WI 53217 J. E. Horner Seaworthy Systems, Inc.
36 Main Street Essex, CT 06426 B. J. Kirkwood Covenant Engineering 17200 County Road 362 Buena Vista, C0 81211
' P. J. Louzecky Engineered Applications Corp.
1674 Witherbee Road Troy, MI 48084 N. N. Rivera Designers and Planners, Inc.
1725 Jeffersen Davis Highway Arlington, VA 22202 A.2 l
i
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CONSULTANTS Name Company. Address E. Sandberg Det Norske Veritas / Ship Division P.O. Box 300, N-1322 Hovik Oslo, Norway the late A. Sarsten Norwegian Institute of Technology Haakon Haakonson N-7000 Trondheim, Norway T. W. Spaetgens T. W. Spaetgens 6963 Fremlin Street Vancouver, British Columbia, Canada V6P 3W3 H. Valland Norwegian Marine Technology Research Institute A/S Haakon, Haakonsonsgt. 34 P.O. Box 4125 Valentinlyst N-7001 Trondheim, Norway J. V. Webber Ricardo Consulting Engineers Bridgeworks Shoreham-by-Sea West Sussex, England BN4 SF6 L. Wechsler Tracor Hydronautics 7210 Pindell School Road Laurel, MD 20707 A. H. Wendel Tracor Hydronautics 7210 Pindell School Road Laurel, MD 20707 4
A.3
a--.,m APPENDIX B BIBLIOGRAPHY OF PNL REPORTS G
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^ ' ' ~ '
APPENDIX B BIBLIOGRAPHY OF PNL REPORTS The following reports, listed chronologically, were prepared in the course of conducting the reviews and evaluations of TDI engine reliability and operability. -
Report Number Report Title Date PNL-5161 Review and Evaluation of TDI Diesel Generator 6/84 Owners' Group Program Plan PNL-5201 Review and Evaluation of Transamerica Delaval, Inc.,
7/84 Diesel Engine Reliability and Operability - Grand Gulf Nuclear Station Unit 1 PNL-5211 Review and Evaluation of Transamerica Delaval, Inc.,
8/84 Diesel Engine Reliability and Operability - Catawba Nuclear Station Unit 1 PNL-5234 Review and Evaluation of Transamerica Delaval, Inc.,
9/84 Diesel Engine Reliability and Operability - Comanche Peak Steam Electric Station Unit 1 PNL-5304 Review and Evaluation of Transamerica Delaval, Inc.,
11/84 Diesel Engine Reliability and Operability - San Onofre Nuclear Generating Station Unit 1 PNL-5342 Review and Evaluation of Transamerica Delaval, Inc.,
12/84 Diesel Engine Reliability and Operability - Shoreham Nuclear Power Station Unit 1 PNL-5411 A Review of the Operability and Reliability of 2/85 Transamerica Delaval, Inc., Diesel Generators at Perry Nuclear Power Plant Unit 1 PNL-5200-11 Review of Engine Base and Bearing Caps for Transamerica 3/85 Delaval DSR-48 Diesel Engines PNL-5200-12 Review of Engine Base and Bearing Caps for Transamerica 3/85 Delaval DSRV-12, DSRV-16, and DSRV-20 Diesel Engines PNL-5200-15 Review of Emergency Diesel Generator Rocker Arm 3/85 Capscrews B.1
Report Number Report Title Date PNL-5200-21 Review of Energency Diesel Generator Air Start Valve 3/85 Capscrews PNL-5200-3 Review of Emergency Diesel Generator Engine and 5/85 Auxiliary Module Wiring and Terminations PNL-5200-12 Review of Emergency Diesel Generator Air Start Valve 6/85 Rev. 1 Capscrews PNL-5200-11 Review of Engine Base and Bearing Caps for Transamerica 7/85 Rev. 1-Delaval DSR-48 Diesel Engines PNL-5485 Review and Evaluation of Transamerica Delaval, Inc.,'
7/85 Diesel Engine Reliability and Operability - River Bend Station Unit 1 PNL-5336 Review of Design Review and Quality Revalidation Report 10/85 for the Transamerica Delaval Diesel Generators at Shoreham Nuclear Power Station Unit 1 PNL-5444 Review of Design Review and Quality Re Olidation Report 10/85 for the Transamerica Delaval Diesel Generators at Comanche Peak Steam Electric Station Unit 1 PNL-5600 Review of Resolution of Known Problems in Engine 12/85 Components for Transamerica Delaval Inc. Emergency Diesel Generators 9
B.2
PNL-5718 DISTRIBUTI0N' No. of No. of Copies-Copies
' 0FFSITE M. Williams Division of Licensing j
10.. C. Berlinger Office of Nuclear Reactor Division of Licensing Regulation 0ffice of Nuclear Reactor U.S. Nuclear Regulatory Regulation Commission U.S. Nuclear Regulatory Washington, DC 20555 Commission 4
Washington, DC 20555 B. Buckley Division of Licensing 2
M. Carrington Office of Nuclear Reactor Division of Licensing -
Regulation Office of Nuclear Reactor U.S. Nuclear Regulatory Regulation Commi ssion U.S. Nuclear Regulatory Washington, DC 20555 Commission Washington, DC 20555 S. Burwell Division of Licensing D. Crutchfield Office of Nuclear Reactor 4
Division of' Licensing Regulation Office of Nuclear Reactor U.S. Nuclear Regulatory Regulation Commission U.S.- Nuclear Regulatory Washington, DC 20555 Canmission j
Washington, DC 20555 D. Hood Division of Licensing M. Kaltman Office of Nuclear Reactor Division of Licensing Regulation Office of Nuclear Reactor U.S. Nuclear Regulatory Regulation Commission U.S. Nuclear Regulatory Washington, DC 20555 Commission Washington, DC 20555 D. Houston Division of Licensing H. Thompson Office of Nuclear Reactor Division of Licensing Regulation Office of Nuclear Reactor U.S. Nuclear Regulatory Regulation Commission U.S. Nuclear Regulatory Washington, DC 20555 Commission Washington, DC 20555 4
4 Distr-1 i
4 r
,,,..m.,_ _ _.
,,,,.,y.,
,m.
- _-,,,,m.
No. of No. of Copies Copies K. Jabbour J. Stefano Division of Licensing Division of Licensing Office of Nuclear Reactor Office of Nuclear Reactor Regulation Regulation U.S. Nuclear Regulatory U.S. Nuclear Regulatory Commission Commission Washington, DC 20555 Washington, DC 20555 T. Kenyon E. Weinkam Division of Licensing Division of Licensing Office of Nuclear Reactor Office of Nuclear Reactor Regulation Regulation U.S. Nuclear Regulatory U.S. Nuclear Regulatory Commission Commission Washington, DC 20555 Washington, DC 20555 E. McKenna 2
Public Document Room i
Division of Licensing Division of Technical Office of Nuclear Reactor Information and Document Regulation Control U.S. Nuclear Regulatory U.S. Nuclear Regulatory Commission Commission Washington, DC 20555 Washington, DC 20555 M. Miller P. Lang Division of Licensing Mailstop NE-14 Office of Nuclear Reactor Office of Nuclear Energy Regulation U.S. Department of Energy U.S. Nuclear Regulatory Washington, DC 20555 Comission Washington, DC 20555 H. M. Hardy 100 Carolina Avenue S. Miner Seneca, SC 29678 Division of Licensing Office of Nuclear Reactor A. J. Henriksen Regulation A. J. Henriksen, Inc.
U.S. Nuclear Regulatory 7731 N. Fairchild Avenue Commission Fox Point, WI 53217 Washington, DC 20555 J. E. Horner C. Stahle Seaworthy Systems, Inc.
Division of Licensing 36 Main Street Office of Nuclear Reactor Essex, CT 06426 Regulation U.S. Nuclear Regulatory B. J. Kirkwood Commission Covenant Engineering Washington, DC 20555 17200 County Road 362 Buena Vista, CO 81211 Distr-2 L
No. of No. of Copies Copies P. J. Louzecky H. Valland Engineered Applications Corp.
Norwegian Marine Technology 1674 Witherbee Road Research Institute A/S Troy, MI 48084 Haakon, Haakonsonsgt. 34 P.O. Box 4125 Valentinlyst N. N. Rivera N-7001 Trondheim, Norway Designers and Planners, Inc.
1725 Jefferson Davis Highway J. V. Webber Arlington, VA 22202 Ricardo Consulting Engineers Bridgeworks Shoreham-by-Sea L. Wechsler West Sussex, England BN4 SF6 Tracor Hydronautics ONSITE 7210 Pindell School Road Laurel, MD 20707 DOE Richland Operations Office A. H. Wendel Tracor Hydronautics A. Rizzo/M. Plahuta 7210 Pindell School Road Laurel, MD 20707 26 Pacific Northwest Laboratory FOREIGN
- 5. Bush D. Dingee H. Engja R. Dodge Norwegian Marine Technology W. Gintner Research Institute A/S W. Laity (10)
Haakon, Haakonsonsgt. 34 J. Nesbitt P.O. Box 4125 Valentinlyst W. Richmond N-7001 Trondheim, Norway J. Spanner L. Van Fleet E. Sanberg F. Zaloudek Det Norske Veritas Technical Infonnation (5)
Ship Division Publishing Coordination (2)
P.O. Box 300 N-1322 Hovik Oslo, Norway T. W. Spaetgens 6963 Fremlin Street Vancouver, British Columbia Canada V6P 3W3 Distr-3 4