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Quality of materials and proper installation are keys to maintaining the effectiveness, safety and durability of radiant barrier systems used for thermal insulation. Two new ASTM standards will provide important information to both users and installers of radiant barrier systems. The new standards are ASTM C1743 , Practice for Installation and Use of Radiant Barrier Systems (RBS) in Residential…
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Traffic monitoring is a means of counting and classifying vehicles and measuring vehicle flow characteristics, such as vehicle speed, lane occupancy, turning movements and other items typically used to portray traffic movement. In order for traffic monitoring data to be assessed properly, information on how the data were collected, edited, summarized and reported must be provided. This obligation…
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Since the appearance of the first California-type models around 1940, the profilograph has been a popular device used for quality control in the construction of pavements. Both roadway and airfield landing agencies have adopted roughness indexes computed from profilograph-derived measurements as a level of construction quality. Emerging high-speed inertial profilers can now quickly collect…
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Invented in the early 1990s, the tomographic gamma scanner is used in the nondestructive assay of radioactive waste contained in drums or cans. In the last 10 years, TGS technology has been industrialized, with systems operating in South Korea, the United States and Europe. A new ASTM International test provides users with a means of streamlining TGS procedures and practices, and it will be…
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A proposed new standard being developed by ASTM International Committee E17 on Vehicle-Pavement Systems will be the first to describe how truth-in-data should be applied to traffic monitoring data collection, summarization and reporting. WK25280 , Practice for Highway Traffic Monitoring Truth-in-Data, is under the jurisdiction of Subcommittee E17.52 on Traffic Monitoring. Current traffic…
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Being able to compile and interpret data on how traffic turns through an intersection could have an impact on future environmental and safety decisions regarding intersection geometry and traffic control. However, until recently no standard has existed to properly obtain and use this data. Now, ASTM International Committee E17 on Vehicle-Pavement Systems has approved E2667 , Practice for…
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ASTM International Committee C16 on Thermal Insulation will hold a forum on “Thermal Insulation in 2008: Perspectives on Economic Thickness, Contributions to Sustainability, and Design of Power & Process Facilities” on Monday, April 7, 2008, from 5 to 6 p.m., in Anaheim, Calif. The forum will be held in conjunction with the April 6-9 standards development meetings of the committee. Three…
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In response to requests from fuel producers around the world, ASTM International Committee C26 on Nuclear Fuel Cycle has developed a standard for using the total evaporation method to determine uranium or plutonium composition. The new standard, C 1672 , Test Method for Determination of Uranium or Plutonium Isotopic Composition or Concentration by the Total Evaporation Method Using a Thermal…
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Work is continuing on a proposed new ASTM International standard that will aid laboratories and materials manufacturers in testing the moisture properties in construction materials. The proposed standard, WK16466 , Test Method for Moisture Retention Curves of Porous Building Materials Using Pressure Plates, is under the jurisdiction of Subcommittee C16.33 on Insulation Finishes and Moisture, part…
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Neutron absorbers have been used for criticality control in spent nuclear fuel pools and in spent fuel transportation casks for decades. However, since the late 1980s, as spent fuel storage pools have been filled, utilities have transferred spent fuel into dry dual-purpose (storage/transportation) canisters. The neutron absorbers used in dual-purpose canisters are subjected to different operating…