ISO/PAS 19891-1:2016
(Main)Ships and marine technology — Specifications for gas detectors intended for use on board ships — Part 1: Portable gas detectors for atmosphere testing of enclosed spaces
Ships and marine technology — Specifications for gas detectors intended for use on board ships — Part 1: Portable gas detectors for atmosphere testing of enclosed spaces
ISO/PAS 19891:2016 provides specifications in performance, gases to be measured, sensitivities, indications, alarm levels, protection against shock, temperature and water ingress, and testing requirements of portable gas detectors used for atmosphere testing of enclosed spaces on board ships prior to entry into those spaces. ISO/PAS 19891:2016 specifies suitable portable gas detectors for compliance with SOLAS regulation XI-1/7 "Atmosphere testing instrument for enclosed spaces", and can be used for deciding whether portable gas detectors available on the market are suitable for compliance with these SOLAS requirements. NOTE 1 SOLAS regulation XI-1/7 requires appropriate portable atmosphere testing instrument or instruments to be carried on board ships by 1 July 2016. The SOLAS regulation states that, as a minimum, the appropriate portable atmosphere testing instrument or instruments be capable of measuring concentrations of oxygen, flammable gases or vapours, hydrogen sulphide and carbon monoxide prior to entry into enclosed spaces. For the purpose of measurement of concentrations of flammable gases or vapours, this part of ISO/PAS 19891 specifies the flammable gas as either "methane" or "propane and butane", and requires clear marking of types of flammable gases which can be measured by the portable gas detectors. For an optimal use of ISO/PAS 19891, it should be noted that flammable vapours/gases which are not marked, cannot be measured, or detected by the portable gas detector. NOTE 2 Iso-butane can be used as calibration gas of portable gas detectors measuring propane and butane. ISO/PAS 19891:2016 does not give any indication of the toxicity of the flammable gases.
Navires et technologie maritime — Spécifications pour les détecteurs de gaz destinés à être utilisés à bord des navires — Partie 1: Détecteurs de gaz portables pour les essais atmosphériques des espaces clos
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Standards Content (Sample)
PUBLICLY ISO/PAS
AVAILABLE 19891-1
SPECIFICATION
First edition
2016-03-15
Ships and marine technology —
Specifications for gas detectors
intended for use on board ships —
Part 1:
Portable gas detectors for atmosphere
testing of enclosed spaces
Navires et technologie maritime — Spécifications pour les détecteurs
de gaz destinés à être utilisés à bord des navires —
Partie 1: Détecteurs de gaz portables pour les essais atmosphériques
des espaces clos
Reference number
ISO/PAS 19891-1:2016(E)
©
ISO 2016
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ISO/PAS 19891-1:2016(E)
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ii © ISO 2016 – All rights reserved
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ISO/PAS 19891-1:2016(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Specification of portable gas detectors for atmosphere testing of enclosed spaces .2
4.1 General requirements . 2
4.1.1 Gases required to be measured . 2
4.1.2 Method of measurement . 3
4.1.3 Basic performance . 3
4.1.4 Portability . 4
4.2 Sensitivities, indications, and alarms . 4
4.3 Robustness and electrical safety . 4
4.4 Marking and manual . 4
4.4.1 Marking . 4
4.4.2 Instruction manual . 5
5 Testing . 5
Bibliography . 6
© ISO 2016 – All rights reserved iii
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ISO/PAS 19891-1:2016(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 8, Ships and marine technology, Subcommittee
SC 1, Lifesaving and fire protection.
ISO 19891 consists of the following parts, under the general title Ships and marine technology —
Specifications for gas detectors intended for use on board ships:
— Part 1: Portable gas detectors for atmosphere testing of enclosed spaces [Publicly Available
Specification]
iv © ISO 2016 – All rights reserved
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ISO/PAS 19891-1:2016(E)
Introduction
This part of ISO/PAS 19891 specifies performance, gases to be measured, tolerances for gas
measurement, and testing requirements of portable gas detectors used for testing of the atmosphere in
enclosed spaces on board ships prior to entry into those spaces, as required by SOLAS regulation XI-1/7
“Atmosphere testing instrument for enclosed spaces”.
This part of ISO/PAS 19891 specifies the characteristics that portable gas detectors should be assessed
against for items such as: which gases can be measured, sensitivities, indications, alarm levels,
protection against shock, temperature and water ingress, and additional requirements for spaces or
areas where a risk of explosion exists.
This part of ISO/PAS 19891 specifies the marine environmental conditions in which portable gas
detectors are expected to be used.
This part of ISO/PAS 19891 does not define differences between gases and vapours, nor does it give
technical detail on calculations and methodology for explosive limits or operational exposure levels.
The intent of this part of ISO/PAS 19891 is to simplify the subject to the essentials and use references
for the actual scientific standards if more detailed explanations are required.
This part of ISO/PAS 19891 does not provide a specification on how to use portable gas detectors, or
how to enter enclosed spaces.
© ISO 2016 – All rights reserved v
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PUBLICLY AVAILABLE SPECIFICATION ISO/PAS 19891-1:2016(E)
Ships and marine technology — Specifications for gas
detectors intended for use on board ships —
Part 1:
Portable gas detectors for atmosphere testing of
enclosed spaces
1 Scope
This part of ISO/PAS 19891 provides specifications in performance, gases to be measured, sensitivities,
indications, alarm levels, protection against shock, temperature and water ingress, and testing
requirements of portable gas detectors used for atmosphere testing of enclosed spaces on board ships
prior to entry into those spaces.
This part of ISO/PAS 19891 specifies suitable portable gas detectors for compliance with SOLAS
regulation XI-1/7 “Atmosphere testing instrument for enclosed spaces”, and can be used for deciding
whether portable gas detectors available on the market are suitable for compliance with these SOLAS
requirements.
NOTE 1 SOLAS regulation XI-1/7 requires appropriate portable atmosphere testing instrument or instruments
to be carried on board ships by 1 July 2016. The SOLAS regulation states that, as a minimum, the appropriate
portable atmosphere testing instrument or instruments be capable of measuring concentrations of oxygen,
flammable gases or vapours, hydrogen sulphide and carbon monoxide prior to entry into enclosed spaces.
For the purpose of measurement of concentrations of flammable gases or vapours, this part of
ISO/PAS 19891 specifies the flammable gas as either “methane” or “propane and butane”, and requires
clear marking of types of flammable gases which can be measured by the portable gas detectors. For an
optimal use of ISO/PAS 19891, it should be noted that flammable vapours/gases which are not marked,
cannot be measured, or detected by the portable gas detector.
NOTE 2 Iso-butane can be used as calibration gas of portable gas detectors measuring propane and butane.
This part of ISO/PAS 19891 does not give any indication of the toxicity of the flammable gases.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
SOLAS regulation XI-1/7, Atmosphere testing instrument for enclosed spaces
IMO Resolution A.1050(27), Revised recommendations for entering enclosed spaces aboard ships, Annex,
section 7, Testing the atmosphere
IEC 60079-0:2011, Explosive atmospheres- Part 0: Equipment — General requireme
...
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