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ASTM C737-22

(Specification)

Standard Specification for Limestone for Dusting of Coal Mines

Standard Specification for Limestone for Dusting of Coal Mines

ABSTRACT
This specification covers limestone suitable for use as dust in coal mines to prevent coal dust explosions. The limestone shall conform to the chemical composition requirements prescribed. The chemical analysis and the particle size analysis of the limestone shall be conducted.
SCOPE
1.1 This specification covers pulverized limestone suitable for use as dust in coal mines to reduce risk of coal dust explosions.
Note 1: Pulverized limestone can serve as a source of incombustible material in coal mine operations. Limestone is dusted onto coal exposures in sufficient amount so that the incombustible content of the combined coal dust, rock dust, other dust, and moisture shall not be less than 80 % of all loose dust (MSHA 30 CFR 75.403). With such a concentration of limestone incombustible material, dust explosions cannot initiate or be propagated from nearby gas explosions. The limestone must be substantially dry in order to dust satisfactorily.  
1.2 The values stated in SI 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, 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.

General Information

Status
Published
Publication Date
30-Jun-2022
ICS
73.020 - Mining and quarrying
Technical Committee
C07 - Lime and Limestone
Drafting Committee
C07.02 - Specifications and Guidelines
Current Stage
Ref Project

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ASTM C737-22 - Standard Specification for Limestone for Dusting of Coal Mines
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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.
Designation: C737 − 22
Standard Specification for
1
Limestone for Dusting of Coal Mines
This standard is issued under the fixed designation C737; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* C51 Terminology Relating to Lime and Limestone (as Used
by the Industry)
1.1 This specification covers pulverized limestone suitable
C110 Test Methods for Physical Testing of Quicklime,
for use as dust in coal mines to reduce risk of coal dust
Hydrated Lime, and Limestone
explosions.
C1271 Test Method for X-ray Spectrometric Analysis of
NOTE 1—Pulverized limestone can serve as a source of incombustible
Lime and Limestone
material in coal mine operations. Limestone is dusted onto coal exposures
C1301 Test Method for Major and Trace Elements in Lime-
in sufficient amount so that the incombustible content of the combined
stone and Lime by Inductively Coupled Plasma-Atomic
coal dust, rock dust, other dust, and moisture shall not be less than 80 %
Emission Spectroscopy (ICP) and Atomic Absorption
of all loose dust (MSHA 30 CFR 75.403). With such a concentration of
limestone incombustible material, dust explosions cannot initiate or be
(AA)
propagated from nearby gas explosions. The limestone must be substan-
E11 Specification for Woven Wire Test Sieve Cloth and Test
tially dry in order to dust satisfactorily.
Sieves
3
1.2 The values stated in SI units are to be regarded as
2.2 Government Regulations:
standard. No other units of measurement are included in this
30 CFR Part 75 Mandatory Safety Standards - Underground
standard.
Coal Mines
1.3 This standard does not purport to address all of the
3. Terminology
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
3.1 Definitions:
priate safety, health, and environmental practices and deter- 3.1.1 For definitions of terms used in this specification, refer
mine the applicability of regulatory limitations prior to use.
to Terminology C51.
1.4 This international standard was developed in accor- 3.2 Definitions of Terms Specific to This Standard:
dance with internationally recognized principles on standard-
3.2.1 rock dust—pulverized limestone or other inert materi-
ization established in the Decision on Principles for the
als which meet chemical and physical requirements; when
Development of International Standards, Guides and Recom-
applied to coal dust, will reduce dispersibility and minimize the
mendations issued by the World Trade Organization Technical
explosion hazard. 30 CFR § 75.2.
Barriers to Trade (TBT) Committee.
4. Chemical Composition
2. Referenced Documents
4.1 Limestone shall conform to the following as to chemical
2
composition:
2.1 ASTM Standards:
C25 Test Methods for Chemical Analysis of Limestone,
Moisture (at point of manufacture), max, % 0.5
Combustible matter, max, % 5.0
Quicklime, and Hydrated Lime
Silica, free and combined, max, % 4.0
C50 Practice for Sampling, Sample Preparation, Packaging,
NOTE 2—Rock dust sources which do not contain more than 5 % of free
and Marking of Lime and Limestone Products
or combined silica may be used with authorization from the Secretary of
Labor or their designee.
1
This specification is under the jurisdiction of ASTM Committee C07 on Lime 5. Physical Properties
and Limestone and is the direct responsibility of Subcommittee C07.02 on
5.1 Limestone for this application shall have the following
Specifications and Guidelines.
Current edition approved July 1, 2022. Published September 2022. Originally particle size:
approved in 1973. Last previous edition approved in 2013 as C737 – 13 which was
Passing 850 μm (No. 20) sieve, min, % 100
withdrawn January 2022 and reinstated in September 2022. DOI: 10.1520/C0737-
Passing 75 μm (No. 200) sieve, min, % 70
22.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on Available from U.S. Government Publishing Office (GPO), 732 N. Capitol St.,
the ASTM website. NW, Washington, DC 20401, http://www.gpo.gov.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C737 − 22
6. Test Methods 8. Sampling, Ins
...

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Standard Practice for Statistical Modeling of Uncertainty in Assessment of In-place Coal Resources

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5.1 Traditional methods for expressing geological uncertainty consist of preparing reliability categories based simply on the distance between drill hole data points, such as the one described by Wood et al. (5) that uses only the drill holes within the coal bed. A major drawback of distance methods is their weak to null association with estimation errors. This practice provides a methodology for effectively assessing the uncertainty in coal resource estimates utilizing stochastic simulation. In determining uncertainty for any coal assessment, stochastic simulation enables consideration of other important factors and information beyond the geometry of drill hole locations, both in and out of the coal bed, including: non-depositional channels, depth of weathering, complexity of seam boundaries, coal seam subcrop projections, and varying coal bed geology for different seams due to fluctuating peat depositional environments. Olea et al. (6) explains in detail the methodology behind this practice and illustrates it with an example.  
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5.4 The results of an uncertainty determination can provide important input into an overall risk analysis assessing the commercial feasibility of a coal deposit.  
5.5 A company may rank coal resources per block (cell) based on the degree of uncertainty.
SCOPE
1.1 This practice covers a procedure for quantitatively determining in-place tonnage uncertainty in a coal resource assessment. The practice uses a database on coal occurrence and applies geostatistical methods to model the uncertainty associated with a tonnage estimated for one or more coal seams. The practice includes instruction for the preparation of results in graphical form.  
1.2 This document does not include a detailed presentation of the basic theory behind the formulation of the standard, which can be found in numerous publications, with a selection being given in the references (1-3).2  
1.3 This practice should be used in conjunction with professional judgment of the many unique aspects of a coal deposit.  
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Note 1: All values given in parentheses after SI units are stated in inch-pound units.  
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1.6 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.

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Standard Practice for Minimum Geospatial Data for Representing Coal Mining Features

SIGNIFICANCE AND USE
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.
SCOPE
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.  
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Standard Test Method for Shake Extraction of Mining Waste by the Synthetic Precipitation Leaching Procedure

SIGNIFICANCE AND USE
4.1 This test method is intended as a means for obtaining an extract of mining waste. The extract may be used to estimate the release of certain inorganic constituents of the waste under the laboratory conditions described in this test method. The user is advised to minimize the holding time between sampling and testing if the waste is suspected to contain reactive sulfide minerals.
Note 3: This method is not intended to be used as a kinetic test to simulate weathering of mining wastes. For kinetic testing of mining wastes, refer to Test Method D5744 to determine release rates for constituents of interest. For static testing of metal mining ore and mining or mineral processing waste materials, refer to Test Methods E1915.  
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4.4 This test method is not intended to provide an extract that is representative of the actual leachate produced from a waste in the field or to produce extracts to be used as the sole basis of engineering design. If the conditions of this test method are not suitable for the test material, USEPA Method 1312 or Test Method E2242 may be used.  
4.5 This test method has not been demonstrated to simulate actual disposal site leaching conditions.  
4.6 This test method produces extracts that are amenable to the determination of both major and minor (trace) inorganic constituents. When minor constituents are being determined, it is especially important that precautions be taken in sample storage and handling to avoid possible contamination of the samples.  
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SCOPE
1.1 This test method covers a procedure for the shake leaching of mining waste containing at least 80 % dry solids (≤20 % moisture) in order to generate a solution to be used to determine the inorganic constituents leached under the specified testing conditions that conform to the synthetic precipitation leaching procedure (SPLP).  
1.2 This test method calls for the shaking of a known weight of mining waste with acidic extraction fluid of a specified composition, as well as the separation of the liquid phase for analysis. The pH of the extraction fluid is to reflect the pH of acidic precipitation in the geographic region in which the waste being tested is to be disposed.
Note 1: Possible sources of information concerning the pH of the precipitation in the geographic region of interest include state and federal environmental agencies, state universities, libraries, etc. pH values given in USEPA Method 1312, that are 4.2 east of the Mississippi River and 5.0 west of the Mississippi River and are based on acid precipitation maps, are examples of values that can be used. If the pH of the laboratory water is less than the desired pH for the site, do not use this test method; use Practice D3987 or Test Method E2242.
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SCOPE
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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.  
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4.1 The primary use of these test methods is testing to determine the specified mechanical properties of steel, stainless steel, and related alloy products for the evaluation of conformance of such products to a material specification under the jurisdiction of ASTM Committee A01 and its subcommittees as designated by a purchaser in a purchase order or contract.  
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SCOPE
1.1 These test methods2 cover procedures and definitions for the mechanical testing of steels, stainless steels, and related alloys. The various mechanical tests herein described are used to determine properties required in the product specifications. Variations in testing methods are to be avoided, and standard methods of testing are to be followed to obtain reproducible and comparable results. In those cases in which the testing requirements for certain products are unique or at variance with these general procedures, the product specification testing requirements shall control.  
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4.1 Using the procedures and apparatus in Sections 8 and 9 and the manufacturer's instructions, pressure-tight joints as strong as the pipe itself can be made between manufacturer-recommended combinations of pipe and fittings. See Specification F1055 for performance requirements of polyethylene electrofusion fittings.
SCOPE
1.1 This practice describes procedures for making joints suitable for pressure service with polyethylene (PE) pipe and fittings by means of electrofusion joining techniques in, but not limited to, a field environment. Other suitable electrofusion joining procedures are available from various sources including fitting manufacturers. This standard does not purport to address all possible electrofusion joining procedures, or to preclude the use of qualified procedures developed by other parties that have been proven to produce reliable electrofusion joints. (Note 1)
Note 1: Reference to the manufacturer in this practice refers to the electrofusion fitting manufacturer.  
1.2 The parameters and procedure are applicable only to joining polyethylene pipe and fittings (Note 2) which are intended for PE fuel gas pipe per Specification D2513 and PE potable water, sewer and industrial pipe manufactured per Specification F714, Specification D3035, Specification F2619, and AWWA C901 and C906.
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SIGNIFICANCE AND USE
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SCOPE
1.1 This test method is used to determine the filtering efficiency and the flow rate of the filtration component of a sediment retention device, such as a silt fence, silt barrier, or inlet protector.  
1.1.1 The results are shown as a percentage for filtering efficiency and cubic metres per square metre per minute (m3/m2/min) or gallons per square foot per minute (gal/ft2/min) for flow rate.  
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4.1 The suggestions of this guide are intended to provide proper installation materials and practices to be used during the installation of a central-vacuum system.
SCOPE
1.1 This guide demonstrates proper methods for installing a central-vacuum system.  
1.2 Appendix X1 contains additional sources of information that may be helpful to the user of this guide.  
1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.  
1.4 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.  
1.5 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.

  • Guide
    7 pages
    English language
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ASTM
ASTM F2886-17(2023)(Specification)
Standard Specification for Metal Injection Molded Cobalt-28Chromium-6Molybdenum Components for Surgical Implant Applications

ABSTRACT
This specification covers chemical, mechanical, and metallurgical general requirements for metal injection molded (MIM) cobalt-28chromium-6molybddenum components to be used in manufacturing surgical implants. In this specification, the MIM components covered may have been densified beyond their as-sintered density by post-sinter processing. For the chemical requirements, the components supplied in this specification must conform in accordance to the chemical requirements specified herein in Table 1. The product analysis tolerances must also conform to the product tolerances presented in Table 2. The specification also enumerates the mechanical requirements for MIM components wherein the tensile properties of the MIM must conform to the mechanical properties in Table 3. The microstructural requirements and specimen preparation shall be in accordance with Guide E3 and Practice E407.
SCOPE
1.1 This specification covers chemical, mechanical, and metallurgical requirements for metal injection molded (MIM) cobalt-28chromium-6molybdenum components to be used in the manufacture of surgical implants  
1.2 The MIM components covered by this specification may have been densified beyond their as-sintered density by post-sinter processing.  
1.3 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 nonconformance with the standard.  
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.

  • Technical specification
    5 pages
    English language
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