ISO 817:2014/DAmd 2.2

DRAFT AMENDMENT
ISO 817:2014/DAM 2
ISO/TC 86/SC 8 Secretariat: ANSI
Voting begins on: Voting terminates on:
2019-10-09 2020-01-01
Refrigerants — Designation and safety classification
AMENDMENT 2
Fluides frigorigènes — Désignation et classification de sécurité
AMENDEMENT 2
ICS: 71.100.45
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
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STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
This document is circulated as received from the committee secretariat.
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
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WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO 817:2014/DAM 2:2019(E)
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NOTIFICATION OF ANY RELEVANT PATENT
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PROVIDE SUPPORTING DOCUMENTATION. ISO 2019
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ISO 817:2014/DAM 2:2019(E)
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maximum refrigerant concentration, in air, determined and established to reduce the risks of acute

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

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

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, ...) is added after the number. The numbers and letters shall be assigned considering

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, ...) is added after the number. The numbers and letters shall be assigned

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.

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 RCL for each refrigerant shall be the lowest of the quantities calculated in accordance with

8.1.1.1, 8.1.2 and 8.1.3, using data as indicated in 8.2, and adjusted in accordance with 8.4 unless

The ATEL shall be the lowest of the toxic concentration factors (TCF) 8.1.1.2, 8.1.1.3, 8.1.1.4 and

8.1.1.5. For blends, the individual parameter values in 8.1.1.1 to 8.1.1.5 shall be calculated according

NOTE See Annex D for a sample calculation of ATEL and Annex E for a list of values related to

Data for calculations: the data used to calculate the refrigerant concentration limits shall be