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ASTM D6820-20 - Standard Guide for Use of the Time Domain Electromagnetic Method for Geophysical Subsurface Site Investigation
January 1, 2020 - ASTM International

5.1 Concepts: 5.1.1 All TDEM/TEM instruments are based on the concept that a time-varying magnetic field generated by a change in the current flowing in a large loop on the ground will cause current to flow in the earth below it (Fig. 3). In the typical TDEM/TEM system, these...

ASTM D991-89(2020) - Standard Test Method for Rubber Property—Volume Resistivity Of Electrically Conductive and Antistatic Products
February 1, 2020 - ASTM International

4.1 The electrical behavior of rubber products used in particular applications is important for a variety of reasons such as safety, static changes, current transmission, etc. This test method is useful in predicting the behavior of such rubber products.

IEC TS 63042-301:2018 - UHV AC transmission systems - Part 301: On-site acceptance tests
December 6, 2018 - IEC - International Electrotechnical Commission

IEC TS 63042-301:2018(E) applies to on-site acceptance tests of electrical equipment with the highest voltages of AC transmission system exceeding 800 kV.

ASTM E557-12(2020) - Standard Guide for Architectural Design and Installation Practices for Sound Isolation between Spaces Separated by Operable Partitions
April 1, 2020 - ASTM International

3.1 Rooms formed by operable partitions often need to be isolated acoustically. Sound-isolating properties of operable partitions are specified by architects in terms of sound transmission class (STC) and so advertised by the manufacturer on the basis of...

IEC 61970-302:2018 - Energy management system application program interface (EMS-API) - Part 302: Common information model (CIM) dynamics
April 12, 2018 - IEC - International Electrotechnical Commission

IEC 61970-302:2018 specifies a Dynamics package which contains extensions to the CIM to support the exchange of models between software applications that perform analysis of the steady-state stability (small-signal stability) or transient stability...

ASTM D5473/D5473M-20 - Standard Practice for (Analytical Procedures) Analyzing the Effects of Partial Penetration of Control Well and Determining the Horizontal and Vertical Hydraulic Conductivity in a Nonleaky Confined Aquifer
June 1, 2020 - ASTM International

1.1 This practice covers an analytical solution for determining the horizontal and vertical hydraulic conductivity of an aquifer by analysis of the response of water levels in the aquifer to the discharge from a well that partially penetrates the aquifer. This standard...

ASTM C1558-19 - Standard Guide for Development of Standard Data Records for Computerization of Thermal Transmission Test Data for Thermal Insulation
March 1, 2019 - ASTM International

1.1 This guide provides recommended formats for the recording of thermal transmission test data for thermal insulation and similar materials for inclusion in computerized material property databases. From this information, the database designer is able to...

ASTM E1708-19 - Standard Practice for Electronic Interchange of Color and Appearance Data
November 1, 2019 - ASTM International

1.1 This practice covers procedures to be used in the electronic exchange of color and appearance data between users, by either modem or the physical transfer of electronic media. It is intended for use by manufacturers of color-measuring instruments and developers of...

ASTM D5270/D5270M-20 - Standard Practice for (Analytical Procedures) Determining Transmissivity and Storage Coefficient of Bounded, Nonleaky, Confined Aquifers
June 1, 2020 - ASTM International

1.1 This practice covers an analytical procedure for determining the transmissivity, storage coefficient, and possible location of boundaries for a confined aquifer with a linear boundary. This practice is used to analyze water-level or head data from one or more...

ASTM D4104/D4104M-20 - Standard Practice for (Analytical Procedures) Determining Transmissivity of Nonleaky Confined Aquifers by Overdamped Well Response to Instantaneous Change in Head (Slug Tests)
June 1, 2020 - ASTM International

1.1 This practice covers the determination of transmissivity from the measurement of force-free (overdamped) response of a well-aquifer system to a sudden change of water level in a well. Force-free response of water level in a well to a sudden change in water level is...

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