ASTM F1764-97(2007)
(Guide)Standard Guide for Selection of Hardline Communication Systems for Confined-Space Rescue
Standard Guide for Selection of Hardline Communication Systems for Confined-Space Rescue
SIGNIFICANCE AND USE
Because of the many unique requirements of permit-required confined space rescue operations and the specific construction and composition of some confined spaces, hardline communications systems may be the only type that will meet the requirements for working within these spaces. Some of these requirements are set forth in Federal Regulation and some by safe operating procedures developed for working in confined spaces by industry.
This guide is not meant to preclude the use of other types of communication systems in confined-space rescue.
SCOPE
1.1 This guide covers recommended criteria for the selection of hardwire communication systems for use in permit-required confined-space rescue operations.
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.
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Designation: F1764 – 97 (Reapproved 2007)
Standard Guide for
Selection of Hardline Communication Systems for Confined-
Space Rescue
This standard is issued under the fixed designation F1764; 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 4. Significance and Use
4.1 Because of the many unique requirements of permit-
1.1 This guide covers recommended criteria for the selec-
tion of hardwire communication systems for use in permit- required confined space rescue operations and the specific
required confined-space rescue operations. construction and composition of some confined spaces, hard-
1.2 This standard does not purport to address all of the line communications systems may be the only type that will
safety concerns, if any, associated with its use. It is the meet the requirements for working within these spaces. Some
responsibility of the user of this standard to establish appro- of these requirements are set forth in Federal Regulation and
priate safety and health practices and determine the applica- some by safe operating procedures developed for working in
bility of regulatory limitations prior to use. confined spaces by industry.
4.2 This guide is not meant to preclude the use of other
2. Referenced Documents
types of communication systems in confined-space rescue.
2.1 ASTM Standards:
5. System Requirements
F1490 Terminology Relating to Search and Rescue
2.2 Federal Standards: 5.1 System Safety—The system must be safe for use in the
29 Code of Federal Regulations 1910.146 Permit Required atmosphere, or potential atmosphere, within the space.
Confined Spaces 5.2 The system must have continuous, hands-free voice
29 Code of Federal Regulations 1910.7 Definition and communications capability.
Requirements for a National Recognized Testing Labora- 5.3 The system must be dedicated and private so operations
tory cannot be interfered with by outsiders not involved with the
2.3 National Code: rescue.
National Electrical Code (NEC)/NFPA 70 5.4 The system shall not affect the readings of other safety
equipment (that is, gas detectors).
3. Terminology
5.5 Systems that are battery powered must have a low-
3.1 Definitions of Terms Specific to This Standard: battery warning or a backup power source that provides a
3.1.1 confined space rescue—rescue operations within
minimum of 30 min before communications are lost.
spaces that meet the definition of “permit-required confined 5.6 The system must accommodate a minimum of three
space” in Fed. Std. 29 CFR 1910.146.
users.
3.1.2 hardline communication system—any communication 5.7 Thesystemshouldallowforcommunicationbetweenall
system where all users are connected to the system by a
entrants as well as with the attendant.
hardline or wire. 5.8 The system must work in conjunction with the personal
protective equipment (PPE) necessary to work in the environ-
ment within the space.
5.9 The system must be impervious to the chemicals within
This guide is under the jurisdiction of ASTM Committee F32 on Search and
Rescue and is the direct responsibility of Subcommittee F32.01 on Equipment, the space.
Testing, and Maintenance.
Current edition approved June 1, 2007. Published October 2007. Originally
6. Keywords
approved in 1997. Last previous edition approved in 2002 as F1764 – 97(2002).
6.1 confined space; hardline
DOI: 10.1520/F1764-97R07.
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
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. See Annex A1.
3 6
Available from Occupational Safety and Health Administration (OSHA), 200 See X1.1.
Constitution Ave., NW, Washington, DC 20210, http://www.osha.gov. See X1.2.
4 8
Available from National Fire Protection Association (NFPA), 1 Batterymarch SeeX1.3.
Park, Quincy, MA 02169-7471, http://www.nfpa.org. See X1.4.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
F1764 – 97 (2007)
ANNEX
(Mandatory Information)
A1. INHERENT SAFETY
A1.1 Equipment that requires electrical power to operate sion 1 locations are more hazardous than Division 2, therefore
may be a source of ignition in the presence of flammable gases the test protocols for Division 1 are more stringent. As such,
or vapors, combustible dusts, or ignitable fibers. Equipment equipmentcertifiedforDivision1isalsoapprovedforDivision
that must operate in potentially flammable atmospheres must 2.Hardlinesystemsthatonlyhavelimitedapproval,whenused
be unable to cause ignition (inherently safe) in those atmo- only in atmospheres for which they are approved, meet this
spheres.Theycanbecertifiedasintrinsicallysafeorexplosion- guide. The NFPA does not certify equipment. Testing and
proof. Rescue teams that only work in known hazards, such as certification must be done by a Nationally Recognized Test
on-site rescue teams, may use equipment approved for only Laboratory (NRTL) that has been accredited by OSHA in
those hazards. Rescue teams that respond to unknown hazards, accordance with 29 CFR 1910.7. All certified equipment must
such as fire d
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