Standard Practice for Health Requirements Relating to Occupational Exposure to Respirable Crystalline Silica

SIGNIFICANCE AND USE
These practices and criteria were developed for occupational exposures. They are intended to (a) protect against clinical disease from exposure to respirable crystalline silica, (b) be measurable by techniques that are valid, reproducible, and readily available, and (c) be attainable with existing technology and protective practices.
SCOPE
1.1 This practice covers a description of several actions that should be taken to reduce the risk of harmful occupational exposures to humans in environments containing respirable crystalline silica. This practice is intended for, but not limited to, industries regulated by the U.S. Mine Safety and Health Administration (MSHA) and the U.S. Occupational Safety and Health Administration (OSHA). A separate practice, designed for the unique conditions of the construction industry is under development. While this practice was not designed specifically for construction, it can be applied and may be beneficial, to the extent feasible and practical, pending adoption of a construction industry standard.
1.2 Nothing in this practice shall be interpreted as requiring any action that violates any statute or requirement of any federal, state, or other regulatory agency.
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 regulatory limitations prior to use. It is the responsibility of the user to consult all material safety data sheets and labels pertaining to any hazardous materials used in this standard.

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Historical
Publication Date
30-Nov-2006
Current Stage
Ref Project

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ASTM E1132-06 - Standard Practice for Health Requirements Relating to Occupational Exposure to Respirable Crystalline Silica
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: E1132 − 06
StandardPractice for
Health Requirements Relating to Occupational Exposure to
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Respirable Crystalline Silica
This standard is issued under the fixed designation E1132; 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.
INTRODUCTION
Silicondioxide(silica,SiO )isencounteredinnatureandindustryinawidevarietyofforms.These
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range from essentially anhydrous types with or without a very high degree of crystallinity, to highly
hydroxylated or hydrated types which are amorphous by x-ray diffraction examination. Crystalline
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silica exists in a number of forms or polymorphs. The three major forms, quartz, cristobalite, and
tridymite, pertain to this practice. Quartz (or alpha quartz) is the more common form encountered as
airborne particulates. Two of the polymorphs, cristobalite and tridymite, are formed at elevated
temperatures and are much less common in nature, but might be encountered in several occupations
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where silicas are fired (calcined) at high temperatures. These silica materials have a broad range of
physical and chemical properties.
1. Scope priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. It is the responsi-
1.1 This practice covers a description of several actions that
bility of the user to consult all material safety data sheets and
should be taken to reduce the risk of harmful occupational
labels pertaining to any hazardous materials used in this
exposures to humans in environments containing respirable
standard.
crystalline silica. This practice is intended for, but not limited
to, industries regulated by the U.S. Mine Safety and Health
2. Referenced Documents
Administration (MSHA) and the U.S. Occupational Safety and
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2.1 ASTM Standards:
Health Administration (OSHA). A separate practice, designed
D4532 Test Method for Respirable Dust in Workplace At-
for the unique conditions of the construction industry is under
mospheres Using Cyclone Samplers
development.While this practice was not designed specifically
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for construction, it can be applied and may be beneficial, to the
2.2 ANSI Standards:
extent feasible and practical, pending adoption of a construc-
ANSI/AIHA Z9.2 Fundamentals Governing the Design and
tion industry standard.
Operation of Local Exhaust Systems
Z88.2 American National Standard Practice for Respiratory
1.2 Nothing in this practice shall be interpreted as requiring
Protection
any action that violates any statute or requirement of any
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federal, state, or other regulatory agency. 2.3 Code of Federal Regulations:
29 CFR 1910.94, Ventilation
1.3 This standard does not purport to address all of the
29 CFR 1910.134, Respiratory Protection
safety concerns, if any, associated with its use. It is the
29 CFR 1910.1000, Air Contaminants
responsibility of the user of this standard to establish appro-
29 CFR 1910.1200, Hazard Communication
30 CFR 47, Hazard Communication
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This practice is under the jurisdiction of ASTM Committee E34 on Occupa-
tional Health and Safetyand is the direct responsibility of Subcommittee E34.16 on
Silicas.
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Current edition approved Dec. 1, 2006. Published January 2007. Originally For referenced ASTM standards, visit the ASTM website, www.astm.org, or
approved in 1999. Last previous edition approved in 1999 as E1132 - 99a. DOI: contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
10.1520/E1132-06. Standards volume information, refer to the standard’s Document Summary page on
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Smith, Deane K., Opal, cristobalite, and tridymite: Noncrystallinity versus the ASTM website.
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crystallinity, nomenclature of the silica minerals and bibliography, Powder Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
Diffraction, Vol 13, 1998, pp. 1–18. 4th Floor, New York, NY 10036, http://www.ansi.org.
3 6
Miles, W. J., Crystalline silica analysis of Wyoming bentonite by X-ray AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
diffraction after phosphoric acid digestion, Analytical Chemistry Acta, Vol 286, 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
1994, pp. 97–105. www.access.gpo.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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E1132 − 06
30 CFR 56, Title 30, Subpart D, Air Quality, Radiation, and 4.1.4 Employers shall determine the appropriate OEL for
Physical Agents (MSHA) their operation, but in no case shall the OEL be less stringent
42 CFR 84 Title 42, Part 84, Approval
...

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