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Acoustic Leak Detection for District Heating Systems

Description: An acoustic leak detection facility was completed and used to evaluate the capability of piezoelectric sensors, accelerometers, and capacitance microphones to detect and locate gas and water leaks in underground district heating and cooling (DHC) piping. Leak detection sensitivity and location capabilities for DHC systems were estimated from laboratory data and from data obtained from the underground DH system in Scranton, Pennsylvania, where acoustic background noise levels and acoustic signals from field-induced steam leaks were acquired. Acoustic detection of leaks with flow rates of less than 10 gpm is possible at a distance of several hundred meters, with a location accuracy of a few meters. Although steam leaks of comparable mass loss can be detected over a similar range with transducers mounted on the pipe outer wall, location accuracy of a few meters over this range may only be possible with transducers in direct contract with the steam. Intrusive sensors may also be necessary to detect and locate leaks in plastic pipe.
Date: February 1988
Creator: Kupperman, D. S. & Karvelas, D. E.
Item Type: Report

Advanced Thermoplastic Materials for District Heating Piping Systems

Description: The work described in this report represents research conducted in the first year of a three-year program to assess, characterize, and design thermoplastic piping for use in elevated-temperature district heating (DH) systems. The present report describes the results of a program to assess the potential usefulness of advanced thermoplastics as piping materials for use in DH systems.
Date: April 1988
Creator: Raske, D. T. & Karvelas, D. E.
Item Type: Report

Annex to 7-GeV Advanced Photon Source : Conceptual Design Report

Description: The Annex to the 7-GeV Advanced Photon Source Conceptual Design Report updates the Conceptual Design Report of 1987 (CDR-87) to include the results of further optimization and changes of the design during the past year. The design changes can be summarized as affecting three areas: the accelerator system, conventional facilities, and experimental systems. Most of the changes in the accelerator system result from inclusion of a positron accumulator ring (PAR), which was added at the suggestion of the 1987 DOE Review Committee, to speed up the filling rate of the storage ring. The addition of the PAR necessitates many minor changes in the linac system, the injector synchrotron, and the low-energy beam transport lines. 63 figs., 18 tabs.
Date: May 1988
Creator: Argonne National Laboratory
Item Type: Report

Annual Technical Report

Description: Report of Argonne Chemical Technology division activities, including high-performance batteries, aqueous batteries, advanced fuel cells, and coal utilization.
Date: May 1988
Creator: Argonne National Laboratory. Chemical Technology Division.
Item Type: Report

An Assessment of the Performance of Heat Exchanger Materials in Fluidized-Bed Combustors

Description: The work described in this report represents research conducted in the first year of a three-year program to assess, characterize, and design thermoplastic piping for use in elevated-temperature district heating (DH) systems. The present report describes the results of a program to assess the potential usefulness of advanced thermoplastics as piping materials for use in DH systems. This includes the review of design rules for thermoplastic materials used as pipes, a survey of candidate materials and available mechanical properties data, and mechanical properties testing to obtain baseline data on a candidate thermoplastic material extruded as pipe.
Date: April 1988
Creator: Natesan, K.; Miller, S. A. & Podolski, W. F.
Item Type: Report

Characteristics of the 7-GeV Advanced Photon Source : a Guide for Users

Description: In this document we present the characteristics of the electromagnetic radiation from various types of sources on the 7-GeV Advanced Photon Source (APS) storage ring. The sources include bending magnets, undulators, and wigglers. The characteristics are compared with those of other synchrotron sources when operated at their design specifications. The influence of positron beam size on the on-axis brilliance is discussed, along with the power distribution from these sources. The goal of this document is to provide users with enough information on the characteristics of radiation from the APS storage ring so that experiments can be efficiently planned.
Date: February 1988
Creator: Shenoy, G. K.; Viccaro, P. J. & Mills, Dennis M.
Item Type: Report

Coastal Processes at Sea Bright to Ocean Township, New Jersey: Volume 1, Main Text and Appendix A

Description: From abstract: This report describes a study of coastal processes along the Atlantic Coast from Sea Bright to Ocean Township, New Jersey. Predictive tools were developed and a data analysis made to assist in evaluation and implementation of comprehensive shore protection plans for this highly utilized stretch of coastline.
Date: August 1988
Creator: Kraus, Nicholas C.; Scheffner, Norman W.; Hanson, Hans; Chou, Lucia W.; Cialone, Mary A.; Smith, Jane McKee et al.
Item Type: Report

LAPACK Working Note #5 : Provisional Contents

Description: Report on the proposed computational routines in LAPACK, describing a naming scheme for the routines, enumerates the individual routines, and includes notes on the choice of algorithms and discusses aspects of software design.
Date: September 1988
Creator: Bischof, Chris; Demmel, James; Dongarra, J. J.; Du Croz, Jeremy; Greenbaum, Anne; Hammarling, Sven et al.
Item Type: Report

Mineral Resources of the Behind the Rocks Wilderness Study Area, Grand and San Juan Counties, Utah

Description: Abstract: The Behind the Rocks Wilderness Study Area (UT-060-140A) consists of 12,635 acres in Grand and San Juan Counties, Utah. The study area has inferred subeconomic resources of potash and halite in the subsurface, and sandstone on the surface. The study area has high potential for undiscovered resources of oil and gas, low potential for undiscovered uranium, copper, vanadium, gold, silver, other metals, and geothermal energy, and unknown potential for the rare-earth mineral, braitschite. There is no resource potential for potash or halite (beyond the previously mentioned inferred resources) or for coal.
Date: 1988
Creator: Patterson, Charles G.; Toth Margo I. & Case, James E.
Item Type: Report

Mineral Resources of the Clover Mountains Wilderness Study Area, Lincoln County, Nevada

Description: From abstract: At the request of the U.S. Bureau of Land Management, approximately 84,165 acres of the Clover Mountains Wilderness Study Area (NV-050-139) was evaluated for mineral resources (known) and mineral resource potential (undiscovered). In this report, the area studied is referred to as "the wilderness study area" or simply "the study area;" any reference to the Clover Mountains Wilderness Study Area refers only to that part of the wilderness study area for which a mineral survey was requested by the U.S. Bureau of Land Management. The study area is located in southern Nevada, in Lincoln County, about 90 mi northeast of Las Vegas. No identified mineral resources exist inside the study area, although gold, silver, and copper resources are found immediately to the west at the Pennsylvania mine.
Date: 1988
Creator: Moring Barry C.; Blank, H. Richard, Jr.; Hoffman, J. D. & McHugh Edward L.
Item Type: Report