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U. S. NAVAL ACADEMY'S NEW YARD PATROL CRAFT: FROM CONCEPT TO DELIVERY.

Naval Engineers Journal 1987年第1期99卷 37-58页

作者： Compton, Roger H. Chatterton, Howard A. Hatchell, Gordon McGrath, Frank K. Roger H:. Compton is a Webb graduate who since 1966 has been a part of the naval architecture faculty at the U.S. Naval Academy. Since accepting the appointment to the Academy he has been instrumental in establishing the ABET accredited major program in naval architecture in the conceptual design and operation of the Naval Academy Hydromechanics Laboratory and in the conceptual design of the 108-ft yard patrol craft. Besides his Naval Academy involvement he serves as an adjunct professor with Virginia Polytechnic Institute in its NAVSEA Institute graduate program at Crystal City. He is an active member of both ASNE and SNAME and has published technical papers with both societies. Howard A. Chatterton:began his career as a Navy coop student at the Boston Naval Shipyard in 1960. He received his bachelor's degree in naval architecture and marine engineering from Massachusetts Institute of Technology in 1966 and his master's degree in 1968. He was employed by the Preliminary Design Division of BuShips in the submarine design and hydrofoil design groups until 1972 when he joined the Coast Guard's Naval Engineering Division. He remained with the Design Branch until 1981 when he accepted a faculty position at the U.S. Naval Academy as the research director for the Academy's hydromechanics laboratory. He has recently returned to Coast Guard Headquarters as the assistant chief Naval Architecture Branch Office of Merchant Marine Safety. Gordon Hatchell:is a naval architect at the Naval Sea Combat Systems Engineering Station Norfolk Virginia in the Combatant Craft Engineering Department. He served as lead-ship YP project engineer from its inception to delivery and continues to serve as project coordinator on follow-up ship procurements. He has worked on other boat procurements as well as serving as weight and stability coordinator. Mr. Hatchell began his engineering career in the Design Division at the Norfolk Naval Shipyard in Portsmouth Virginia after receiving a BS in civil engineering from Virginia Polytec

The design of the new 108-ft yard patrol craft (YPs) for the U. S. Naval Academy is described from its beginnings as a senior midshipman design project, through its preliminary and contract design development at the U. S. Navy's small craft design team headquarters, Naval Sea Combat systems engineering Station, Norfolk, Virginia (NAVSEACOMBAT-SYSENGSTA-Norfolk). During preliminary and contract design the Naval Academy Hydromechanics Laboratory (NAHL) provided experimental data to support NAVSEA-COMBATSYSENGSTA-Norfolk's design analyses in powering, seakeeping, and maneuvering. Several tradeoff studies of interest to patrol craft designers are presented. Major events in the detail design and construction of the first boat are described from both the designer's and the shipbuilder's points of view. The launching, builder's and sea trials of the first boat are described.

关键词： NAVAL VESSELS

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THE MODERN MONOHULL

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NAVAL ENGINEERS JOURNAL 1985年第2期97卷 65-82页

作者： GRAHAM, C Capt. Clark Graham USN is one of the Navy's recognized leaders in the area of surface combatant design. He recently completed a five year tour of duty in the Naval Sea Systems Command as the ship design manager and technical director of Arleigh Burke (DDG-51) destroyer design. Previously he was a member of the Navy design teams for Spruance (DD-963) and Virginia (CGN-38). Capt. Graham served as assistant technical director of the Advanced Naval Vehicles Concepts Evaluation and has been active in the field of comparative ship design analysis. His operational experience includes a tour as a cruiser chief engineer. Capt. Graham is currently the professor of naval construction and engineering at M.I.T.

This article will briefly discuss the special attributes and limitations of today's monohull and then project into the future to portray the changes that might be expected through the application of advanced technologies. A realistic evaluation of not only the potential improvements but also the cost to develop and introduce these technologies and the resulting improvements in performance also will be presented.

关键词： NAVAL VESSELS

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FORECASTING QUARTER‐MONTHLY RIVERFLOW

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JAWRA Journal of the American Water Resources Association 1985年第5期21卷 731-741页

作者： Thompstone, Robert M. Hipel, Keith W. McLeod, A. Ian Respectively Assistant Superintendant of Supply Services Alcan Smelters and Chemicals Ltd. P.O. Box 1500 Jonquiere Quebec Canada G7S 4L2 Professor Dept. of Systems Design Engineering University of Waterloo Waterloo Ontario Canada N2L 3G1 and Associate Professor Dept. of Statistical and Actuarial Sciences The University of Western Ontario London Ontario Canada N6A 5B9.

Recent developments with respect to transfer function‐noise models are reviewed and used to model and forecast quarter‐monthly (i.e., near‐weekly) natural inflows to the Lac St‐Jean reservoir in the Province of Quebec, Canada. The covariate series are rainfall and snowmelt, the latter being a novel derivation from daily rainfall, snowfall and temperature series. It is clearly demonstrated using the residual variance and the Akaike information criterion that modeling is improved as one starts with a deseasonalized ARMA model of the inflow series and successively adds transfer functions for the rainfall and snowmelt series. It is further demonstrated that the transfer function‐noise model is better than a periodic autoregressive model of the inflow series. A split‐sample experiment is used to compare one‐step‐ahead forecasts from this transfer function‐noise model with forecasts from other stochastic models as well as with forecasts from a so‐called conceptual hydrological model (i.e., a model which attempts to mathematically simulate the physical processes involved in the hydrological cycle). It is concluded that the transfer function‐noise model is the preferred model for forecasting the quarter‐monthly Lac St‐Jean inflow series. Copyright © 1985, Wiley Blackwell. All rights reserved

关键词： forecasting hydrology statistics stochastic modeling time series analysis transfer function‐noise model

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FIRE MAIN CONTROL

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NAVAL ENGINEERS JOURNAL 1985年第6期97卷 35-48页

作者： MALKOFF, DB MOY, MC WILLIAMS, HL Dr. Donald B. Malkoff majored in physics as an undergraduate at Harvard University. He received an M.D. degree from the University of Pittsburgh School of Medicine in 1960. This was followed by an internship and residency in neurology at University Hospital in Ann Arbor Michigan. He spent several years at the National Institutes of Health engaged in gerontology research has practiced and taught clinical neurology and in 1983 received an M.S. degree in computer science at the University of California San Diego. Currently Dr. Malkoff is employed by the Navy Personnel Research and Development Center in San Diego California where he is senior investigator in a human factor/computer display-and-control project involving the DDG-51 gas turbine propulsion unit. He is a member of the American Academy of Neurology the Society for Neuroscience the American Association for Artificial Intelligence and the Association for Computing Machinery. Dr. Malkoff is certified by the American Board of Psychiatry and Neurology has taught computer science at UCSD and published in several research areas including magnetoencephalography and electron microscopy. His basic interests are in the areas of artificial intelligence and learning expert systems particularly as they apply to the problems of fault-detection and control. Dr. Melvyn C. Moy received his undergraduate training in mathematics and chemistry at the University of Texas Austin. He studied experimental psychology at the University of Wisconsin Madison receiving his M.S. in 1970 and Ph.D. in 1972. He served as an assistant professor at the University of South Dakota where he taught experimental design and methodology for a year before joining the Navy Personnel Research and Development Center in 1973. His work and research since then spans across many application areas such as the development of manpower planning models for the Navy the design of operational decision aids the human engineering of interactive large-scale war gaming systems and the evaluation o

The ship fire main has undergone considerable development throughout the past 2,000 years, resulting in a system that is critical both for normal ship function and for ship survivability in emergencies. Because of its complexity, the modern firemain system is highly vulnerable to malfunction and to damage during combat. Firemain fault detection and fault recovery are currently conducted manually by damage control teams. The advantages and disadvantages of this method are discussed, and alternative methods of fault detection and recovery are explored. An interactive computer program is introduced which uses central control over remotely situated valves to facilitate fault detection and recovery, significantly reducing recovery-time and manpower requirements. These reductions may result in savings of lives, ship systems, and ships themselves. The computer program is based upon an algorithm which is, in effect, a prescription that can be followed manually by the operator or be completely automated. The color graphic display which is used for monitoring can also be utilized for the training of damage control operators or for the evaluation of other algorithms for firemain control. Alternative firemain hardware and configurations could lead to even more efficient methods of fault detection and recovery as well as improved firemain water supply management in general.

关键词： NAVAL VESSELS

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FUTURE PROPULSION MACHINERY TECHNOLOGY FOR GAS-TURBINE POWERED FRIGATES, DESTROYERS, AND CRUISERS

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NAVAL ENGINEERS JOURNAL 1984年第2期96卷 34-46页

作者： BASKERVILLE, JE QUANDT, ER DONOVAN, MR USN The Authors Commander James E. Baskerville USNis presently assigned to Naval Sea Systems Command (NA VSEA) as the Ship Design Manager for the DDG 51 the Navy's next generation surface combatant. A graduate of the U.S. Naval Academy Class of 1969 he is a qualified Surface Warfare Officer and designated Engineering Duty Officer (ED). He received his M.S. degree in Mechanical Engineering and his professional degree of Ocean Engineer from the Massachusetts Institute of Technology (MIT) and holds a patent right on an Electronic Control and Response System. His naval assignments include tours in USSRamsey (FFG-2) Aide and Flag Lieutenant to the Commander Naval Electronic Systems Command and Ship Superintendent Surface Type Desk Officer and Assistant Design Superintendent at NA VSHIPYD Pearl Harbor. He was awarded the Meritorious Service Medal for distinguished performance at Pearl Harbor Naval Shipyard. As an author he has contributed articles to the ASNEJournaland given presentations at local sections on ship design the use of innovative technology in ship repair and maintenance and the costs and risks associated with engineering progress. Commander Baskerville is a registered Professional Engineer in the State of Virginia an adjunct professor teaching marine engineering at Virginia Tech. and in addition to ASNE which he joined in 1975 is a member of SNAME Tau Beta Pi Sigma Xi ASME and the American Society of Heating Refrigeration and Air Conditioning Engineers (ASHRAE). Dr. Earl R. Quandt:received his degree of Chemical Engineer from the University of Cincinnati in 1956 and his Ph.D. degree in Chemical Engineering from the University of Pittsburgh in 1961. He worked in the naval reactors program at the Bettis Atomic Power Laboratory from 1956 to 1963. Since that time he has been with David Taylor Naval Ship Research and Development Center Annapolis Maryland where he is Head of the Power Systems Division. He contributed to this paper while on a one year assignment to the U.S. Naval Academy as V

A turning point occurred in naval engineering in 1972 when the U.S. N avy chose to use marine gas turbines for the propulsion of its new SPRUANCE and PERRY Class ships. This paper reviews the more than twenty years of experience with turbine technology and its design integration into combat ships needed to make that decision. It is concluded that the availability of a good second generation aircraft derivative engine with proven reliability and a strong commercial base, i.e., the LM-2500, was as important to the decision as was the predicted improved ship effectiveness and cost benefits. This paper discusses improvements that can be made to the twin engine, single gear, single propeller shaft system. Focusing only on this mechanical transmission concept, it addresses the impact of possible improvements to the engine, gear, and shafting. In particular, the paper discusses current LM-2500 related R&D efforts to: (a) obtain improved part-power fuel rates, (b) integrate with a reversing reduction gear, and (c) add on a waste heat recovery steam cycle. Looking ahead to the year 2000, this paper suggests that a successor to the ubiquitous LM-2500 will appear in the 15 MW power range to provide the next step in the evolution of the twin engine package. This new naval engine will most likely be based on an aircraft core that exists at present, such that it will have demonstrated its reliability and commercial potential through many hours of testing prior to its mid-1990 marine conversion. This new engine is expected to offer improved air flow, an excellent fuel rate (approaching a flat 0.30 LB/HP-HR), and effective maintenance monitoring, all at some expense in size, weight, and cost. The year 2000 engine will burn a liquid hydrocarbon fuel similar to JP-5 because of its aircraft origins. Combined with advances in gear and shafting technology, the full twin engine propulsion system of the year 2000 should be markedly lighter, smaller, and more efficient than today's units.

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INNOVATIVE CONCEPTS FOR NAVAL SHIP systems

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NAVAL ENGINEERS JOURNAL 1982年第2期94卷 214-231页

作者： BRADY, EF DUBOIS, JP Eugene F. Brady:has varied experience in the Marine Nuclear Design and Computer Design Fields. His background includes three years as an Associate Professor of Engineering. (Widener College Chester Pennsylvania). Educated at the U.S. Maritime Academy at Kings Point Dr. Brady served four years in the U.S. Merchant Marine. He later worked in the early design of Naval Nuclear Submarine Power Plants (Bettis Plant) during which time he completed his graduate studies at the University of Pittsburgh. He is presently employed by Ingalls Shipbuilding Division and holds an active U.S. Coast Guard License as a first Assistant Engineering Officer for Steam Ships. While at the Westinghouse Bettis plant he was involved in the Design and Development of the first S5W Nuclear Propulsion Plant. This experience included investigations into the steam blanketing of heat transfer surfaces. This work was related to the phenomenon of “Chemical Hideout.” He is presently engaged in Advanced Technology Investigations for the Ingalls Shipbuilding Division of Litton Systems Inc. His recent activity has been associated with DDGX Design concepts and in the shipboard application of the RACER system to U.S. Navy surface combatants. Joseph P. DuBois:is Manager of Litton/Ingalls Shipbuilding's Advanced Technology Group. He has a total of 30 years of experience in the shipbuilding industry. His experience includes active duty in the U.S. Navy Bethlehem Steel Company J.J. Henry and Gibbs and Cox in various positions of key responsibility. These responsibilities included subsystem design and development shipbuilding installation tests evaluations and trials and materials and subsystems technology improvements. Responsibilities and experience at Ingalls Shipbuilding during the past fourteen years includes systems engineering analysis and development ship design/construction integration and project engineering management assignments. His formal training has included U.S. Naval Service Schools special training studies at Boston Univer

Increasing demands are being made of U.S. naval ship designers, to provide increased efficiency in both the use of space, and in the development of “highly energy-efficient” shipboard systems. This efficient use of space will allow the placement of additional (or larger) weapons systems on combat ships. The reduction of energy consumption, using energy-efficient ship systems, will extend a combat ship's cruising range. Therefore, the development of suitable advanced systems will enhance the military effectiveness of U.S. Naval Combat Ships. To achieve such improvements in naval ship design, many development programs are now in progress, both in the private sector (including Ingalls Shipbuilding Division) and in the U.S. Navy Establishment. An example of a major “NAVSEA-sponsored” program is the RACER program, in which a “highly-efficiency” COGAS (Combined Gas and Steam) system will be developed. This propulsion plant will be suitable for use on U.S. Navy Destroyers, and on other future naval combatants. In order to contribute to naval ship improvement, Ingalls Shipbuilding Division conducts an Independent Research and Development Program. This program includes the development of improved propulsion, ship's service power, and auxiliary systems. These include advancements in their type, efficiency (space and energy), and shipboard configuration. This paper will describe recent advances in these ship systems. Innovations to be described included advanced power plants (COGAS and other power plant configuration), and reduction of hull and appendage drag. Innovative auxiliary systems will include water purification, and energy-efficient auxiliaries. The emphasis will be on their viability for U.S. Navy application, and the potential for improved energy efficiency. Not all of the concepts described will be eventually implemented on naval ships. However, if those which do not result in hardware serve to stimulate discussion, and development of other innovative systems, this

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SHIPBOARD MAIN BOILER AND FEED PUMP CONTROL-SYSTEM ONLINE ALIGNMENT VERIFICATION

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NAVAL ENGINEERS JOURNAL 1982年第6期94卷 39-46页

作者： BANHAM, JW ADAM, DJ James W. Banham:holds positions both as Director of the Machinery Automation Systems Department of the Naval Ship Systems Engineering Station and as Assistant Chairman of the Mechanical and Industrial Engineering Department of Drexel University's Evening College where he holds the rank of Adjunct Associate Professor. He is the author of a text on Numerical Methods Applications in Engineering. In addition to numerous technical papers he is also the author of the ISA film on Boiler Feedwater Control Systems. A registered professional engineer in the state of Pennsylvania Mr. Banham is co-author of a forthcoming handbook on preparing for the Professional Engineering Examination in mechanical engineering. Mr. Banham holds a bachelor of science degree in mechanical engineering from the Pennsylvania State University his graduate studies were taken at the University of Pennsylvania. He is currently a member of the American Society for Engineering Education and the Instrument Society of America. He served as a member of the ISA Education Committee from 1964 through 1973 and as a member of the ISA Power Plant Dynamics Committee since 1969. His service on the latter committee includes terms as Executive Secretary Vice-Chairman and Chairman. Among other honors Mr. Banham was the winner of the Naval Ship Engineering Center's first Technical Achievement Award (1963) Technical Publication Award (1974) and Equal Employment Opportunity Award (1978). He was also the recipient of Drexel University's Laura S. Campbell Award for Excellence in Teaching (1978). He has taught undergraduate courses in classical control theory numerical methods computer programming systems design and analysis and instrumentation. He also teaches systems theory and computer science in an EIT Review and heat transfer in a PE Review conducted by the Drexel University Department of Continuing Professional Education. Mr. David J. Adam:is a Project Engineer in the Naval Sea Systems Command (PMS301) Steam Propulsion Plant Improvement Program where he i

One of the most serious problems encountered in Naval steam plants following World War II was the unreliable performance of boiler and main feedpump pneumatic control systems. In addition to control component and system design deficiencies, these control systems suffered from inadequate methods to measure and adjust system alignment. This paper describes the development of a set of procedures for on-line alignment verification (OLV) of pneumatic main boiler and feedpump control systems. The procedures are designed for use by N avy control system technicians and, in addition to on-line alignment verification, provide guidance for troubleshooting and for performing system alignment. Procedure static checks measure steady state steaming performance and OLV procedure dynamic checks measure the ability of the boiler and control systems to respond to load changes. The paper describes typical control system characteristics that influence OLV procedure content and the supporting analysis that was used to establish alignment criteria ranges that satisfy both steady state and transient performance requirements. Also described is the alignment criteria tolerance analysis along with the steps involved in a typical OLV check procedure development. Descriptions of the various OLV checks, troubleshooting procedures and alignment procedures are provided. Typical shipboard implementation requirements are described and experience to date with the procedures is provided along with a status report on OLV procedure implementations.

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ENERGY-CONSERVATION FOR PROPULSION OF NAVAL VESSELS

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NAVAL ENGINEERS JOURNAL 1981年第2期93卷 131-144页

作者： BRADY, EF THE AUTHOR:: has varied experience in the Marine Nuclear Design and Computer Design fields. His background also includes three years as an Associate Professor of Engineering at Widener College Chester Pa. Educated at the U.S. Merchant Marine Academy Kings Point N. Y. he served four years in the U.S. Merchant Marine and presently holds an active U.S. Coast Guard License as a First Assistant Engineering Officer for steam Ships. After graduation he worked in the early design of Naval Nuclear Submarine Power Plants (Bettis Plant) during which time he completed his graduate studies at the University of Pittsburgh. While at the Westinghouse Bettis Plant he was involved in the Design and Development of the first S5 W Nuclear Propulsion Plant. This experience included investigation into the steam blanketing of heat transfer and his work was related to the phenomenon of “Chemical Hideout.” At the present time Dr. Brady is engaged in Advanced Technology Investigations for the Ingalls Shipbuilding Division of Lit ten Systems Inc. in Pascagoula Miss.

Energy conservation for powering of U.S. Surface Ships continues to be of prime importance in their design. Depletion by consumption of world petroleum reserves, combined with rapidly rising petroleum fuel costs, intensifies the need for improving the efficiency of current gas turbine power plants. Present gas turbine power plants, with a capacity adequate for naval ship propulsion, have a fuel consumption rate approaching 0.42 lbs. per brake horsepower hour at full power. Using a waste heat recovery unit, system studies show this can be reduced to less than 0.32 Ibs/BHP-HR. This 24% reduction in fuel consumption rate at full power or 35% at part power can produce either a corresponding increase in cruising range (for the same fuel loading), or a reduction in the required fuel loading and tankage (for the same cruising range). Therefore, to evaluate the merits of COGAS systems for U.S. NAVY Surface Ship propulsion, a study was made to evaluate their benefits. Ship impact studies and “trade-off” evaluations were completed. The results show that ultimate fuel consumption rates of 0.28 Ibs./BHP-HR at full power may be achieved, using large, efficient gas turbine units. This study also showed that, to obtain this fuel consumption improvement, this system required additional space and weight. Ship arrangements are also impacted. However, the effect on ship stability is slight. The net gain justifies the use of COGAS propulsion on future naval surface ships.

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THE “TRADE—OFF” BETWEEN LEARNING AND INFLATION IN SHIPBUILDING

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Naval Engineers Journal 1978年第4期90卷 23-40页

作者： FRISCH, FRANZ A.P. TODD, CHARLES Dr. Franz A.P. Frischgraduated from the Technical University of Vienna in Austria. He has thirty years' experience in shipbuilding and related subjects. He has worked as a Naval Architect Guarantee Engineer Chief Estimator Production Manager and Director for Shipyard Planning and Maintenance in Austria Denmark Sweden and Germany. In 1956 he was first invited to the United States to testify on foreign cost and production in subsidy cases before the Maritime Administration. From 1957 through 1962 he was associated with several U.S. Naval Architect firms: was Owner's Representative in Europe and Japan conducted studies on transport economy for Venezuela ICC and shipowners and was a consultant for shipyard planning in Brazil and Europe. In 1963 he joined the Staff of the Center for Naval Analysis (CNA) and became Head of the Logistic Section and Study Director. There he originated the FDL ship and ship concept and was assigned as advisor to the Project Manager. From 1968 through 1974 Dr. Frisch was a Faculty member and visiting lecturer at Massachusetts Institute of Technology he lectured on Shipyard Management Ocean Transportation Systems Theory in Transportation and in Interdisciplinary Seminars. In 1972 and 1973 he was consultant to Dubai Drydock. Ltd. for layout of a new shipyard in the Arabian Gulf but since 1973 he has been with the Naval Sea Systems Command mostly involved in special projects. Dr. Frisch is also Adj. Professor for Virginia Polytechnic Institute & State University (VPI) where he teaches graduate courses in Advanced Engineering Economy and Management Concepts. Mr. Charles Toddis a graduate of Howard University School of Engineering Washington D.C where he has also pursued his graduate work. He has fifteen years' experience in New Construction Shipbuilding Acquisition Programs concentrating in the areas of Major Ship Class Project Engineering and Program Management. He worked in this capacity on the LSD 36 and 37 Class ships and in the Special Craft Section of the Combatant Craft

Learning leads to a decrease in program cost and inflation leads to an increase in program cost. At a certain time, the benefits of leaming and the penalty due to inflation will balance each other. This time is defined as the “critical time.” The “critical tune” depends upon the number of ships to be built because this determines the possible gain in learning. The “Critical time” also depends upon the assumed inflation, upon the achievable learning rate, and upon the material/labor ratio of the first ship. Learning expectation can be influenced by planning and the material/labor ration by a make– or buydecision. Assumptions on future learning are as vague as assumptions on inflation. The paper shows that it is almost impossible to beat inflation. It shows that accelerated programs are preferable and that make—decisions supersede the value of buy—decisions. The result is derived from an abstract treatment of the subject. © 1978 American Society of Naval Engineers

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MARINE MANGANESE NODULES STUDIED USING NUCLEAR REACTOR

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NAVAL ENGINEERS JOURNAL 1971年第1期83卷 31-&页

作者： WIGGINS, PF DUFFY, D ELKADY, A Dr. Wiggins is an Associate Professor in the Naval Systems Engineering Department at the U.S. Naval Academy. He holds a B. Mar. E. (State University of New York Maritime College) M.M.E. (New York University) and Ph.D. (University of Maryland). He is a Registered Professional in the State of Maryland and holds a Federal Third Assistant Engineer's License (Steam and Diesel). The professor is a member of the Society of Naval Architects and Marine Engineers the American Nuclear Society and the American Society of Engineering Education. Dr. Wiggins has been at the U.S. Naval Academy since 1962 where his current research interest is neutron activation studies of ocean bottom materials. Dr. Duffy is Professor of Nuclear Engineering at the University of Maryland. He holds a B.S. (Purdue University) M.S. (University of Iowa) and Ph.D. (University of Maryland.) Following work with the U.S. Atomic Energy Commission as a nuclear engineer at Washington D.C. and Hanford Washington he started the university nuclear reactor project in 1957 serving as Nuclear Reactor Director through 1967. His technical interests are nuclear reactor design construction and operation and neutron uses. Dr. El Kady is currently a nuclear physicist with the U.A.R. Atomic Energy Commission in Cairo United Arab Republic. He holds a B.S. (Cairo University) and a Ph.D. (University of Maryland). His current research interest is in the area of neutron activation analysis of geological samples.

As ore deposits of important elements become depleated on land masses, man will look to the ocean floor for metals of economic interest. Manganese nodules, which can be pumped from the ocean floor, contain valuable elements. The prompt photon emission which follow neutron capture can be used for location and analysis of these elements. A 10 KW pool-type research reactor thermal column supplied the neutrons for this application of nuclear spectroscopy.

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