ISO 817:2014/Amd 2:2021
(Amendment)Refrigerants — Designation and safety classification — Amendment 2
Refrigerants — Designation and safety classification — Amendment 2
Fluides frigorigènes — Désignation et classification de sécurité — Amendement 2
General Information
Relations
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 817
Third edition
2014-06-01
AMENDMENT 2
2021-03
Refrigerants — Designation and safety
classification
AMENDMENT 2
Fluides frigorigènes — Désignation et classification de sécurité
AMENDEMENT 2
Reference number
ISO 817:2014/Amd.2:2021(E)
©
ISO 2021
---------------------- Page: 1 ----------------------
ISO 817:2014/Amd.2:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 817:2014/Amd.2:2021(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 of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 86, Refrigeration and air-conditioning,
Subcommittee SC 8, Refrigerants and refrigeration lubricants.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
© ISO 2021 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 817:2014/Amd.2:2021(E)
Refrigerants — Designation and safety classification
AMENDMENT 2
3.1.36
Replace Note 1 to entry with the following:
Note 1 to entry: Acute toxicity exposure limit, oxygen deprivation limit and flammable concentration
limit are refrigerant concentration limits that are determined in accordance with this document.
3.2
Delete the following text:
RCL refrigerant concentration limit
RCL RCL expressed as grams per cubic metre
M
RCL RCL expressed as parts per million by volume
ppm
4.1
Replace the text with the following:
An identifying number shall be assigned to each refrigerant. Assigned numbers and safety
classifications are shown in Tables 5, 6 and 7. Tables E.4, E.5 and E.6 provide designations for
refrigerants for which insufficient data are available for safety classification or determination of
refrigerant concentration limits.
4.4.1
Replace the text with the following:
Zeotropes shall be assigned an identifying number in the 400 series. In order to differentiate
among the different zeotropes having the same components but in different proportions, an upper-
case letter (A, B, C, etc.) is added after the number. The numbers and letters shall be assigned
considering harmonization as presented in Clause 9.
4.4.2
Replace the text with the following:
Azeotropes shall be assigned an identifying number in the 500 series. In order to differentiate
among the different azeotropes having the same components but in different proportions, an
upper-case letter (A, B, C, etc.) is added after the number. The numbers and letters shall be assigned
considering harmonization as presented in Clause 9.
© ISO 2021 – All rights reserved 1
---------------------- Page: 4 ----------------------
ISO 817:2014/Amd.2:2021(E)
5.2
Replace the second paragraph with the following:
The compositional designating prefixes for ethers shall substitute an “E” for “C” (carbon), such that
HFE, HCFE, and CFE refer to hydrofluoroether, hydrochlorofluoroether, and chlorofluoroether,
respectively. E in the identifying number shall be omitted when composition-designating prefixes
are used. The composition designating prefixes for halogenated olefins shall be either:
— CFC, HCFC, or HFC to refer to chlorofluorocarbon, hydrochlorofluorocarbon, or
hydrofluorocarbon, respectively; or
— with substitution of an O for the carbon C, as CFO, HCFO, HCO or HFO, to refer to chlorofluoro-
olefin, hydrochlorofluoro-olefin, hydrochloro-olefin or hydrofluoro-olefin, respectively.
Clause 8
Replace the title with the following:
8 Refrigerant concentration limits
8.1
Replace the text with the following:
Determination of the refrigerant concentration limits shall assume full vaporization and uniform
mixing; no removal by dissolution, reaction or decomposition in the volume to which it is released.
Safety factors are included for consideration of temporary local concentrations or uncertainties in
the test data.
8.1.1.1
Replace the text with the following:
The ATEL shall be the lowest of the toxic concentration factors (TCF) 8.1.1.2 to 8.1.1.5. For blends,
where available, the blend toxicity data shall be used for the individual parameter values in 8.1.1.1
to 8.1.1.5 and when toxicity data for the blends are not available, shall be calculated according to
the following formula:
X X X
1
1 2 n
=+ +…+
C C C C
blend 1 2 n
where
x is the mole fraction of component n of the blend;
n
C is the TCF for component n in accordance with ISO 10298.
n
NOTE See Annex D for a sample calculation of ATEL and Annex E for a
...
INTERNATIONAL ISO
STANDARD 817
Third edition
2014-06-01
AMENDMENT 2
Refrigerants — Designation and safety
classification
AMENDMENT 2
Fluides frigorigènes — Désignation et classification de sécurité
AMENDEMENT 2
PROOF/ÉPREUVE
Reference number
ISO 817:2014/Amd.2:2021(E)
©
ISO 2021
---------------------- Page: 1 ----------------------
ISO 817:2014/Amd.2:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii PROOF/ÉPREUVE © ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 817:2014/Amd.2:2021(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 of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 86, Refrigeration and air-conditioning,
Subcommittee SC 8, Refrigerants and refrigeration lubricants.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
© ISO 2021 – All rights reserved PROOF/ÉPREUVE iii
---------------------- Page: 3 ----------------------
ISO 817:2014/Amd.2:2021(E)
Refrigerants — Designation and safety classification
AMENDMENT 2
3.1.36
Replace Note 1 to entry with the following:
Note 1 to entry: Acute toxicity exposure limit, oxygen deprivation limit and flammable concentration
limit are refrigerant concentration limits that are determined in accordance with this document.
3.2
Delete the following text:
RCL RCL expressed as grams per cubic metre
M
RCL RCL expressed as parts per million by volume
ppm
4.1
Replace the text with the following:
An identifying number shall be assigned to each refrigerant. Assigned numbers and safety
classifications are shown in Tables 5, 6 and 7. Tables E.4, E.5 and E.6 provide designations for
refrigerants for which insufficient data are available for safety classification or determination of
refrigerant concentration limits.
4.4.1
Replace the text with the following:
Zeotropes shall be assigned an identifying number in the 400 series. In order to differentiate
among the different zeotropes having the same components but in different proportions, an upper-
case letter (A, B, C, etc.) is added after the number. The numbers and letters shall be assigned
considering harmonization as presented in Clause 9.
4.4.2
Replace the text with the following:
Azeotropes shall be assigned an identifying number in the 500 series. In order to differentiate
among the different azeotropes having the same components but in different proportions, an
upper-case letter (A, B, C, etc.) is added after the number. The numbers and letters shall be assigned
considering harmonization as presented in Clause 9.
© ISO 2021 – All rights reserved PROOF/ÉPREUVE 1
---------------------- Page: 4 ----------------------
ISO 817:2014/Amd.2:2021(E)
5.2
Replace the text with the following:
The compositional designating prefixes for ethers shall substitute an “E” for “C” (carbon), such that
HFE, HCFE, and CFE refer to hydrofluoroether, hydrochlorofluoroether, and chlorofluoroether,
respectively. E in the identifying number shall be omitted when composition-designating prefixes
are used. The composition designating prefixes for halogenated olefins shall be either:
— CFC, HCFC, or HFC to refer to chlorofluorocarbon, hydrochlorofluorocarbon, or hydrofluorocarbon,
respectively; or
— with substitution of an O for the carbon C, as CFO, HCFO, HCO or HFO, to refer to chlorofluoro- olefin,
hydrochlorofluoro- olefin, hydrochloro-olefin or hydrofluoro-olefin, respectively.
Clause 8
Replace the title with the following:
8 Refrigerant concentration limits
8.1
Replace the text with the following:
Determination of the refrigerant concentration limits shall assume full vaporization and uniform
mixing; no removal by dissolution, reaction or decomposition in the volume to which it is released.
Safety factors are included for consideration of temporary local concentrations or uncertainties in
the test data.
8.1.1.1
Replace the text with the following:
The ATEL shall be the lowest of the toxic concentration factors (TCF) 8.1.1.2 to 8.1.1.5. For blends,
where available, the blend toxicity data shall be used for the individual parameter values in 8.1.1.1
to 8.1.1.5 and when toxicity data for the blends are not available, shall be calculated according to
the following formula:
X X X
1
1 2 n
=+ +…+
C C C C
1 2 n
where
x is the mole fraction of component n of the blend;
n
C is the TCF for component n in accordance with ISO 10298.
n
NOTE See Annex D for a sample calculation of ATEL and Annex E for a list of values relate
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.