定价： 260元 / 折扣价： 221 元

定价： 481元 / 折扣价： 409 元 加购物车

定价： 605元 / 折扣价： 515 元

5.1 This practice is used to assess the indigenous inclusions or second-phase constituents in metals using extreme value statistics.5.2 It is well known that failures of mechanical components, such as gears and bearings, are often caused by the presence of large nonmetallic oxide inclusions. Failure of a component can often be traced to the presence of a large inclusion. Predictions related to component fatigue life are not possible with the evaluations provided by standards such as Test Methods E45, Practice E1122, or Practice E1245. The use of extreme value statistics has been related to component life and inclusion size distributions by several different investigators (3-8). The purpose of this practice is to create a standardized method of performing this analysis.5.3 This practice is not suitable for assessing the exogenous inclusions in steels and other metals because of the unpredictable nature of the distribution of exogenous inclusions. Other methods involving complete inspection such as ultrasonics must be used to locate their presence.AbstractThis practice describes a methodology to statistically characterize the distribution of the largest indigenous non-metallic inclusions in steel specimens based upon quantitative metallographic measurements. This practice enables the experimenter to estimate the extreme value distribution of inclusions in steels. The procedures in determining non-metallic inclusions in steel are presented and discussed in details.1.1 This practice describes a methodology to statistically characterize the distribution of the largest indigenous nonmetallic inclusions in steel specimens based upon quantitative metallographic measurements. The practice is not suitable for assessing exogenous inclusions.1.2 Based upon the statistical analysis, the nonmetallic content of different lots of steels can be compared.1.3 This practice deals only with the recommended test methods and nothing in it should be construed as defining or establishing limits of acceptability.1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.4.1 For measurements obtained from light microscopy, linear feature parameters shall be reported as micrometers, and feature areas shall be reported as micrometers.1.5 The methodology can be extended to other materials and to other microstructural features.1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 646元 / 折扣价： 550 元 加购物车

Failures associated with coal refuse structures have resulted in loss of life, destruction of property, and extensive environmental damage. Notable examples include the 1972 failure of a slurry impoundment on Buffalo Creek in Southern West Virginia that killed 125 people and rendered over 4,000 people homeless. In 2001, an impoundment near Inez, Kentucky broke through underground mine passages, releasing approximately 250 million gallons of slurry into adjacent waterways, causing extensive damage to property and habitat along 75 miles of streams.Surface mining in steep slope areas has created thousands of valley fills, burying hundreds of miles of ephemeral and intermittent streams. Scientific studies have suggested additional negative impacts on downstream aquatic habitat resulting from this practice.Federal regulation does not provide explicitly for compilation of standardized databases that would facilitate monitoring and analysis of mining activity at regional or national levels. This standard addresses the need for a national database which can serve as a starting point for inquires and analysis related to the locations of mining fill structures, their relative abundance, and spatial pattern.Within its area of exclusive jurisdiction, each RA is the ADS for coal mining spatial data that it creates and uses to regulate mining activity.This geospatial data standard will help ensure uniformity of data contributed by each RA and assist organizations in efforts to create, utilize, and share geospatial data relative to SMCRA and it will lead to better communication between state, tribal, and federal regulatory offices, the public, and industry.Limitations of Use—Uses of the national dataset are limited by several factors affecting the accuracy, currentness, and completeness of various data sources.Completeness—Participation in the compilation of spatial data is not uniform across RAs, which may affect completeness, both in terms of spatial data and associated attributes. For some RAs, this standard may not be applicable because features described herein do not occur within their area of responsibility.Currency—Source data is subject to change as a result of regulatory actions that may change the geographical location, extent, or attributes of particular features which may not be reflected in the national dataset. If detailed information is needed for individual features, the appropriate RA should be contacted for additional information.Data compiled in accordance with this standard is not intended to be used as a primary source for evaluating risk or safety.Data compiled in accordance with this standard is intended for informative purposes; it is not authoritative. The data is not a direct product of survey and has no standing as a legal document.This standard conforms to the definition of a Data Content Standard as promulgated by the U.S. Federal Geographic Data Committee (FGDC) (See ANSI INCITS 61-1986 (R2002), ANSI INCITS 320-1998 (R2003), and Project 1574-D).1.1 This practice defines a set of terms, procedures, and data elements required to develop a national spatial dataset of features associated with excess spoil and refuse materials produced by coal mining operations. These features include excess spoil structures, coal preparation plants, and coal refuse structures.1.1.1 Excess Spoil Structures—are created when the total spoil produced during mining exceeds the volume of material that can be utilized for reclamation. This occurrence is common in steep slope areas, where the final grade of reclaimed slopes is limited by stability requirements. It also occurs where overburden volume is significantly larger than the volume of minable coal. Spoil also exhibits a net increase in volume due to the introduction of void spaces in fragmented rock when overburden is removed to expose underlying coal seams. The production of excess spoil requires the creation of disposal structures that extend outside the mined area. These structures usually take the form of out-of-pit spoil piles, side-hill fills, or valley fills (See Fig. 1).1.1.2 Coal Preparation Plants—are facilities where coal is separated from non-combustible materials, and potentially crushed, resized, and blended with other grades of coal. Preparation plants produce refuse as a byproduct.1.1.3 Refuse—is a waste byproduct of coal processing, generally categorized as either coarse or fine. Fine coal refuse often is handled as a slurry containing a blend of water, fine coal, silt, sand, and clay particles.1.1.4 Impounding Refuse Structures—create a holding area for slurry that allows solids to settle out and water to be recovered. Cross-valley and diked impoundments utilize an embankment, often constructed of coarse coal refuse, which forms a basin for slurry retention, as shown in Fig. 2 and Fig. 3 respectively. Incised impoundments dispose of slurry in an excavated area below the natural surface and do not utilize a significant embankment for slurry retention (See Fig. 4).1.1.5 Non-Impounding Refuse Structures—may contain slurry that has been dewatered and stabilized prior to disposal. Non-impounding structures also may utilize slurry cells to dispose of fine refuse. Methods that significantly reduce the water content of fine coal refuse may allow a refuse structure to avoid being classified as an impoundment.1.2 This practice addresses coal mining geospatial data relative to the Surface Mining Control and Reclamation Act of 1977 (SMCRA). SMCRA authorizes state and tribal Regulatory Authorities (RAs) to regulate surface coal mining operations (SCMO). Each RA shall be the authoritative data source (ADS) for coal mining geospatial data associated with its area of responsibility.1.3 This standard is one of several that have been approved or are in development related to SMCRA approved coal mining operations. Also under development is a terminology standard. Initial development of these standards is being done on an individual basis; however, they may be consolidated to reduce repetition of information between them.1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulator limitations prior to use.1.6 This practice offers a set of instructions for performing one or more specific operations. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this practice may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a project’s many unique aspects. The word “Standard” in the title of this document means only that the document has been approved through the ASTM consensus process.

定价： 0元 / 折扣价： 0 元

4.1 Use this practice to identify and measure the amount of actual and effective floor area that will be unavailable to occupants for the placement of people’s workplaces, furniture, and equipment or for circulation.4.2 Findings from use of this practice are intended for optional inclusion with reports of floor area measured in accordance with Practice E1836/E1836M or in accordance with ANSI/BOMA Z65.1–1996.NOTE 1: The choice between using Practice E1836/E1836M or ANSI/BOMA Z65.1–1996 as the basis for measurement depends on the objectives of the analysis. Practice E1836/E1836M is oriented to the traditional interests of design professionals and would be particularly suitable for single-tenant buildings whereas some categories of space measured by ANSI/BOMA Z65.1–1996 are oriented to the leasing of multi-tenant buildings by real estate professionals.4.3 this practice is not intended for use for regulatory purposes, nor for fire hazard assessment, nor for fire risk assessment.1.1 This practice specifies how to measure certain characteristics of a building, known as building loss features, inside the exterior gross area of a floor and how to calculate the amount of actual and effective floor area that will be not be available for the placement of people’s workplaces, furniture, equipment, or for circulation, if using standard furnishings and orthogonal furniture systems.1.2 This practice can be used to specify a performance requirement to limit the amount of floor area that may be taken up by building loss features.1.3 This practice can be used to assess how well a design(s) for an office facility meets a performance requirement regarding floor area.1.4 This practice can be used to assess how well a constructed office building has met a performance requirement regarding floor area.1.5 This practice is not intended for and not suitable for use for regulatory purposes, fire hazard assessment, and fire risk assessment.1.6 Users of this practice should recognize that, in some situations, the amount of certain actual and effective floor area losses may be mitigated to some degree at some cost by custom-tailoring spaces and creating specially fitted furnishings and carpentry to get some value from space which would not otherwise be usable.1.7 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.9 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 646元 / 折扣价： 550 元 加购物车

This practice covers infrared spectrophotometry procedures for determining the molecular structural features such as types and number of branches in polyolefins and polyolefin copolymers. The structural features expressed by these determinations affect the ultimate polymeric properties and are useful in showing correlations with many performance properties. The apparatus is comprised of double beam or Fourier transform infrared spectrophotometer, hot plate, microscope slides, compression molding press, metal plates, brass shims, micrometer, and film mounts. Materials shall include polyethylene terephthalate, aluminum, or matte finished teflon-fiberglass sheet. The concentration shall be calculated using either the Beer-Lambert law with the appropriate molar absorptivity or an appropriate calibration curve.1.1 This practice covers infrared procedures for determining the molecular structural features in polyolefins and polyolefin copolymers. The structural features of primary concern are the types and numbers of branches. Although this practice centers its attention on polyolefins and polyolefin copolymers, the techniques, with proper modification, can be used for some other polymers as well.NOTE 1: Quantitative determinations require either an internal or an external evaluation of sample thickness. ASTM test methods available for specific features are listed in Tables 1 and 2.1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.NOTE 2: There is no known ISO equivalent to this standard.1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 515元 / 折扣价： 438 元 加购物车

4.1 This practice addresses AML PAs, PUs, Keyword Features, and Project Sites. This practice is significant as it provides for uniformity of geospatial data pertaining to the geographic location and description of AML sites located throughout the United States.4.2 This geospatial data standard will help ensure uniformity of data contributed by each RA and assist organizations in efforts to create, utilize, and share geospatial data. Use of this standard will result in organized and accessible data to support programmatic decisions and work plan development, increased awareness of AML problems, and better communication between RA, the public, industry, and other interested parties.4.3 The geospatial data may be served as a layer in a national dataset and map service.1.1 This practice covers the minimum elements for the accurate location and description of geospatial data for defining Abandoned Mine Land (AML) Problem Areas, Planning Units, Keyword Features, and Project Sites as originally defined by the Office of Surface Mining Reclamation and Enforcement (OSMRE), through its Abandoned Mine Land Inventory Manual (Directive AML-1) under the jurisdiction of Surface Mining Control and Reclamation Act of 1977. These standards remain applicable to mining organizations that geospatially locate and identify AML sites, however these standards can be used for entities that are in beginning phases of mapping and identifying AML sites using protocol that is consistent with existing nomenclature.1.1.1 Abandoned mine lands consist of those lands and waters which were mined for coal or other minerals, or both, and abandoned or left in an inadequate condition of reclamation and for which there is no continuing reclamation responsibility for mitigation of adverse impacts to human health and safety or environmental resources.1.1.2 As used in this practice, an AML Problem Area (PA) represents a closed polygon boundary for a uniquely defined geographic area contained within an AML Planning Unit (PU). An AML PA is a subdivision of an AML PU that contains one or more AML keyword features together with impacted land or water resources or both. An AML PA should not cross PU boundaries.1.1.3 As used in this practice, an AML PU represents a closed polygon boundary of a uniquely defined geographic area identified by unique numbers and names. An entire WCU may be delineated as a single PU or subdivided into multiple PUs.1.1.4 As used in this practice, an AML Keyword Feature is a point, line, or polygon defining the location of a specific on-the-ground feature contained within an AML Problem Area (PA) as described in the AML Inventory Manual.1.1.5 As used in this practice, an AML Project Site is a closed polygon boundary for a uniquely defined geographic area that includes the area disturbed to achieve the reclamation. An AML Project Site may contain one or more AML keyword features together with impacted land or water resources or both.1.2 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.4 This practice offers a set of instructions for performing one or more specific operations. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this practice may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a project’s many unique aspects. The word “Standard” in the title of this document means only that the document has been approved through the ASTM consensus process.1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 702元 / 折扣价： 597 元 加购物车

This PDF includes GI #2. 1. Scope 1.1 This Standard applies to the electrical features (a) of gas- and oil-burning appliances and equipment; (b) of solid fuel-burning appliances where the specific Standard for such appliances requires compliance

定价： 546元 / 折扣价： 465 元

5.1 Fractography is often used to help identify the events that have resulted in the fracture of a glass object. This practice defines the appearance of various fracture surface features, as well as their method of formation. Thus, there can be a common understanding of their relationship to the fracture process as well as a common terminology.1.1 Fracture features on the surface of a crack reflect the nature and course of the fracture event associated with the breakage of a glass object. This practice is a guide to the identification and interpretation of these fracture surface features.1.2 The practice describes the various fracture surface features as to their appearance, the process of formation and their significance.1.3 The practice does not provide the procedural information necessary for a complete fractographic analysis. Such information is available in the general literature. (See Glossary for suggested literature).1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 590元 / 折扣价： 502 元 加购物车

4.1 This practice addresses coal mining geospatial data in general and is significant to the coal mining community because it provides uniformity of geospatial data pertaining to coal mining features.4.2 Some RA data for coal mining feature attributes may not have values. Those RAs may not collect those attributes as part of their regulatory program or those attributes may not be applicable within their area of responsibility. As a result, a national dataset of coal mining features may appear to be incomplete for those RAs.4.3 Within its area of exclusive jurisdiction, each RA is the ADS for the coal mining geospatial data that it creates and uses to regulate mining activity.4.4 Limitations of Use—Uses of a national dataset are limited by several factors affecting the completeness, currency, and accuracy, of various data sources.4.4.1 Completeness—Participation in the compilation of spatial data may not be uniform across RAs, which may affect completeness, both in terms of spatial data, and associated attributes. For some RAs, this standard may not be applicable because features described herein do not occur within their area of responsibility.4.4.2 Currency—Source data is subject to change as a result of regulatory actions that may change the geographical location, extent, or attributes of particular features which may not be reflected in the national dataset. If detailed information is needed for individual features, the appropriate RA should be contacted for additional information.4.4.3 Data compiled in accordance with this standard is not intended to be used as a primary source for evaluating risk or safety.4.4.4 Data compiled in accordance with this standard is intended for informative purposes; it is not authoritative.1.1 This practice defines a set of terms, procedures, and data required to define the accurate location and description of the minimum geospatial data for surface coal mining operations (CMO), underground coal mining extents, land reclamation and performance bond statuses, lands unsuitable for mining petitions (LUMP) and designated areas, coal spoil and refuse features, coal preparation plants, environmental resource monitoring locations (ERMLs), and postmining land uses.1.2 Units—The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulator limitations prior to use.1.3.1 This practice offers a set of instructions for performing one or more specific operations. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this practice may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the adequacy of a professional service, nor should this document be applied without consideration of a project’s many unique aspects. The word “Standard” in the title of this document means only that the document has been approved through the ASTM consensus process.1.4 Surface CMOs—As used in this practice, a surface CMO represents an area where coal removal, reclamation, and related supporting activities have occurred, is occurring, is pending authorization or is authorized by the Regulatory Authority (RA) within a defined surface CMO or any other unpermitted area that has been identified by the RA.1.4.1 This practice addresses coal mining geospatial data, interim permits, and permanent program permits. Each RA shall be the authoritative data source (ADS) for coal mining geospatial data.1.5 Underground Coal Mining Extents—This practice addresses underground coal mining extents that represent an area where coal removal has occurred within a defined underground CMO.1.6 Land Reclamation Status—This practice addresses the land reclamation status of surface areas within a permitted CMO where coal removal, reclamation and related supporting activities has occurred, is occurring, or is planned and authorized by the RA.1.7 Performance Bond Status—This practice shows the status of coal mine reclamation as outlined by each phase of reclamation. In addition to defining the status of individual areas covered by a performance bond, use of this standard will identify the changes of the reclamation and bond status to mined areas as they change over time. Reference to bond status means performance bond status.NOTE 1: A single bond may cover multiple permits or multiple bonds may cover a single permit.1.8 Lands Unsuitable for Mining Petition—This practice addresses boundary data pertaining to areas that have been petitioned and designated as unsuitable for mining. It also addresses those lands that have been found by the RA’s process to be designated unsuitable for all or certain types of mining. These areas may be petitioned to be unsuitable for CMOs because they meet criterion that include, but are not limited to: fragile, historic, cultural, scientific, having esthetic values and natural systems such as aquifers that could be significantly damaged due to a CMO.1.9 Refuse Structures—This practice addresses excess spoil and refuse features produced by CMOs. These features include excess spoil structures, coal refuse structures, and coal preparation plants.1.9.1 Excess Spoil Structures—These structures are created when the total spoil produced during mining exceeds the volume of material that can be utilized for reclamation. This occurrence is common in steep slope areas, where the final grade of reclaimed slopes is limited by stability requirements. It also occurs where overburden volume is significantly larger than the volume of minable coal. Spoil also exhibits a net increase in volume due to the introduction of void spaces in fragmented rock when overburden is removed to expose underlying coal seams. The production of excess spoil requires the creation of disposal structures that extend outside the mined area.1.9.2 Coal Preparation Plants—Facilities where impurities are removed from coal and potentially crushed, resized, and blended with other grades of coal. Preparation plants produce refuse as a byproduct.1.9.3 Refuse—A waste byproduct of coal processing, generally categorized as either coarse or fine. Fine coal refuse often is handled as a slurry containing a blend of water, fine coal, silt, sand, and clay particles.1.9.4 Impounding Refuse Structures—These structures create a holding area for slurry that allows solids to settle out and water to be recovered. Cross-valley and diked impoundments utilize an embankment, often constructed of coarse coal refuse, which forms a basin for slurry retention, as shown in Fig. 1 and Fig. 2, respectively. Incised impoundments dispose of slurry in an excavated area below the natural surface and do not utilize a significant embankment for slurry retention, see Fig. 3.FIG. 1 Cross Sectional Depiction of a Cross-Valley Refuse Impounding FeatureFIG. 2 Cross Sectional Depiction of a Diked Refuse Impounding FeatureFIG. 3 Cross Sectional Depiction of an Incised Refuse Impounding Feature1.9.5 Non-Impounding Refuse Structures—These structures may contain slurry that has been dewatered and stabilized prior to disposal. Non-impounding slurry cells are used to dispose of fine refuse. Methods that significantly reduce the water content of fine coal refuse may allow a refuse structure to avoid being classified as an impoundment.1.10 ERML—This practice addresses locations where monitoring and sampling (such as water, air, soil sampling, and subsidence or air blasting monitoring) has occurred, is occurring, or is planned.1.11 Postmining Land Uses—This practice describes data required to locate and identify postmining land uses for surface coal mining and reclamation operations. Postmining land use may include cropland, pasture/hayland, grazing land, forest, residential, fish and wildlife habitat, developed water resources, public utilities, industrial/commercial, and recreation.1.12 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 843元 / 折扣价： 717 元 加购物车

4.1 The purpose of this guide is to provide a framework for consistent description of microstructural and microtextural features visible in optical micrographs of graphite. It also provides some guidance on sample preparation and image processing.1.1 This guide covers the identification and the assignment of microstructural and microtextural features observed in optical micrographs of graphite. The objective of this guide is to establish a consistent approach to the categorization of such features to aid unambiguous discussion of optical micrographs in the scientific literature. It also provides guidance on specimen preparation and the compilation of micrographs.1.2 The values stated in SI units are to be regarded as the standard.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 646元 / 折扣价： 550 元 加购物车