ASTM F1764-97(2018)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F1764 − 97 (Reapproved 2018)
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 3. Terminology
1.1 This guide covers recommended criteria for the selec- 3.1 Definitions of Terms Specific to This Standard:
tion of hardwire communication systems for use in permit-
3.1.1 confined space rescue—rescue operations within
required confined-space rescue operations.
spaces that meet the definition of “permit-required confined
space” in Fed. Std. 29 CFR 1910.146.
1.2 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3.1.2 hardline communication system—any communication
responsibility of the user of this standard to establish appro-
system where all users are connected to the system by a
priate safety, health, and environmental practices and deter-
hardline or wire.
mine the applicability of regulatory limitations prior to use.
1.3 This international standard was developed in accor-
4. Significance and Use
dance with internationally recognized principles on standard-
4.1 Because of the many unique requirements of permit-
ization established in the Decision on Principles for the
required confined space rescue operations and the specific
Development of International Standards, Guides and Recom-
construction and composition of some confined spaces, hard-
mendations issued by the World Trade Organization Technical
line communications systems may be the only type that will
Barriers to Trade (TBT) Committee.
meet the requirements for working within these spaces. Some
of these requirements are set forth in Federal Regulation and
2. Referenced Documents
some by safe operating procedures developed for working in
2.1 ASTM Standards:
confined spaces by industry.
F1490 Terminology Relating to Search and Rescue (With-
4.2 This guide is not meant to preclude the use of other
drawn 2011)
types of communication systems in confined-space rescue.
2.2 Federal Standards:
29 Code of Federal Regulations 1910.146 Permit Required
5. System Requirements
Confined Spaces
29 Code of Federal Regulations 1910.7 Definition and Re-
5.1 System Safety—The system must be safe for use in the
quirements for a National Recognized Testing Laboratory atmosphere, or potential atmosphere, within the space.
NOTE 1—See Annex A1.
2.3 National Code:
National Electrical Code (NEC)/NFPA 70
5.2 The system must have continuous, hands-free voice
communications capability.
NOTE 2—See X1.1.
This guide is under the jurisdiction of ASTM Committee F32 on Search and
5.3 The system must be dedicated and private so operations
Rescue and is the direct responsibility of Subcommittee F32.01 on Equipment,
cannot be interfered with by outsiders not involved with the
Testing, and Maintenance.
Current edition approved Nov. 1, 2018. Published November 2018. Originally
rescue.
approved in 1997. Last previous edition approved in 2012 as F1764 – 97(2012).
DOI: 10.1520/F1764-97R18. 5.4 The system shall not affect the readings of other safety
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
equipment (that is, gas detectors).
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
5.5 Systems that are battery powered must have a low-
the ASTM website.
battery warning or a backup power source that provides a
The last approved version of this historical standard is referenced on
minimum of 30 min before communications are lost.
www.astm.org.
Available from Occupational Safety and Health Administration (OSHA), 200
5.6 The system must accommodate a minimum of three
Constitution Ave., NW, Washington, DC 20210, http://www.osha.gov.
5 users.
Available from National Fire Protection Association (NFPA), 1 Batterymarch
Park, Quincy, MA 02169-7471, http://www.nfpa.org. NOTE 3—See X1.2.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F1764 − 97 (2018)
NOTE 5—See X1.4.
5.7 The system should allow for communication between all
entrants as well as with the attendant.
5.9 The system must be impervious to the chemicals within
NOTE 4—See X1.3.
the space.
5.8 The system must work in conjunction with the personal
6. Keywords
protective equipment (PPE) necessary to work in the environ-
ment within the space. 6.1 confined space; hardline
ANNEX
(Mandatory Information)
A1. INHERENT SAFETY
A1.1 Equipment that requires electrical power to operate A1.1.) Division 1 locations are more hazardous than Division
may be a source of ignition in the presence of flammable gases 2, therefore the test protocols for Division 1 are more stringent.
or vapors, combustible dusts, or ignitable fibers. Equipment
As such, equipment certified for Division 1 is also approved for
that must operate in potentially flammable atmospheres must
Division 2. Hardline systems that only have limited approval,
be unable to cause ignition (inherently safe) in those atmo-
when used only in atmospheres for which they are approved,
spheres. They can be certified as intrinsically safe or explosion-
meet this guide. (See Note A1.2.) The NFPA does not certify
proof. Rescue teams that only work in known hazards, such as
equipment. Testing and certification must be done by a
on-site rescue teams, may use equipment approved for only
Nationally Recognized Test Laboratory (NRTL) that has been
tho
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: F1764 − 97 (Reapproved 2012) F1764 − 97 (Reapproved 2018)
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
1.1 This guide covers recommended criteria for the selection of hardwire communication systems for use in permit-required
confined-space rescue operations.
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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
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.
2. Referenced Documents
2.1 ASTM Standards:
F1490 Terminology Relating to Search and Rescue (Withdrawn 2011)
2.2 Federal Standards:
29 Code of Federal Regulations 1910.146 Permit Required Confined Spaces
29 Code of Federal Regulations 1910.7 Definition and Requirements for a National Recognized Testing Laboratory
2.3 National Code:
National Electrical Code (NEC)/NFPA 70
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 confined space rescue—rescue operations within spaces that meet the definition of “permit-required confined space” in
Fed. Std. 29 CFR 1910.146.
3.1.2 hardline communication system—any communication system where all users are connected to the system by a hardline
or wire.
4. Significance and Use
4.1 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.
4.2 This guide is not meant to preclude the use of other types of communication systems in confined-space rescue.
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, Testing, and
Maintenance.
Current edition approved July 1, 2012Nov. 1, 2018. Published August 2012November 2018. Originally approved in 1997. Last previous edition approved in 20072012
as F1764 – 97(2007).(2012). DOI: 10.1520/F1764-97R12.10.1520/F1764-97R18.
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.
The last approved version of this historical standard is referenced on www.astm.org.
Available from Occupational Safety and Health Administration (OSHA), 200 Constitution Ave., NW, Washington, DC 20210, http://www.osha.gov.
Available from National Fire Protection Association (NFPA), 1 Batterymarch Park, Quincy, MA 02169-7471, http://www.nfpa.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F1764 − 97 (2018)
5. System Requirements
5.1 System Safety—The system must be safe for use in the atmosphere, or potential atmosphere, within the space.
NOTE 1—See Annex A1.
5.2 The system must have continuous, hands-free voice communications capability.
NOTE 2—See X1.1.
5.3 The system must be dedicated and private so operations cannot be interfered with by outsiders not involved with the rescue.
5.4 The system shall not affect the readings of other safety equipment (that is, gas detectors).
5.5 Systems that are battery powered must have a low-battery warning or a backup power source that provides a minimum of
30 min before communications are lost.
5.6 The system must accommodate a minimum of three users.
NOTE 3—See X1.2.
5.7 The system should allow for communication between all entrants as well as with the attendant.
NOTE 4—See X1.3.
5.8 The system must work in conjunction with the personal protective equipment (PPE) necessary to work in the environment
within the space.
NOTE 5—See X1.4.
5.9 The system must be impervious to the chemicals within the space.
6. Keywords
6.1 confined space; hardline
ANNEX
(Mandatory Information)
A1. INHERENT SAFETY
A1.1 Equipment that requires electrical power to operate may be a source of ignition in the presence of flammable gases or vapors,
combustible dusts, or ignitable fibers. Equipment that must operate in potentially flammable atmospheres must be unable to cause
ignition (inherently safe) in those atmospheres. They can be certified as intrinsically safe or explosion-proof. Rescue teams that
only work in known hazards, such as on-site rescue teams, may use equipment approved for only those hazards. Rescue teams that
respond to unknown hazards, such as fire departments and other off-site rescue teams, must have equipment with the highest
possible level of approval available, that is, equipment approved for atmospheres that are classified as: Class I Division 1 Groups
A, B, C, D; Class II Division 1 Groups E, F, G; and Class I
...