BS 8468-3.2:2020 pdf download

BS 8468-3.2:2020 pdf download.Respiratory protective devices for use against chemical, biological, radiological and nuclear (CBRN) agents Part 3.2:Air-purifying devices incorporating a hood for escape— Specification.
5.1 General
The complete device for use against CBRN agents shall be an air.purifying escape device
incorporating a hood conformIng to (IS EN 403:2004, except for the requirements In (IS EN 403:2004,
6.10 and 6.11 for both types and except for the requirements in OS EN 403:2004.6.14,6.19 and
6.21 for Type 1.
The complete device for use against CORN agents shall also niret the requirements specified in £2 to 5.6 of this British Standard.
In addition. Trpe I devices shall pass the single-burner, moving specimen test, method 3 in accordance with BS EN 13274-4:2001.
In all tests, all test samples shall meet the requirements.
5.2 Preconditioning
Samples shall be preconditioned in accordance with BS EN 403:2004 7.4 prIor to visual inspection. testing for inward leakage and chemical agent permeation and penetration.
5.3 Visual inspection
Visuai Inspection shall be in accordance with BS 8468-8:2020, Clause 6. A minimum of two samples shall be inspected.
5.4 Inward leakage
The maximum inward leakage in the breathing zone shall be 0,1% when tested a,s a complete systc’m In accordance with BS EN 403:2004,7.6.1, with 10 test subjects. except that the choice of test agent shall be determined in accordance with BS EN 13274-1.8.1, according to the requirements for combined filtering devices.
The maximum Inward leakage In the ocular zone shall be 0.67% when tested as a complete system in accordance with OS EN 403:2004.7.6.1. with 10 test sublects. except that the choice of test agent shall be determined in accordance with 85 EN 13274.1.8.1, according to the requirements for combined Altering devices.
5.5 Filters — Gas/vapour element
5.5.1 Test agents – Challenge concentrations and breakthrough concentrations
Filters for ilr-pufl1ylng devices incorporating a hood shall be classified according to the breakthrough times achieved in the laboratory tests as given in Table L
NOTE I The device dassiflcatron. once eswbltshed throagh testing. may be termed the Desjgnoeed Duration (1)01 the device. Thai terminology is used in £.Z cltenu rot agent permeation and pen etrution testing.
6.2 Hood
All hoods shall be marked with:
a) the standard identifier of this British Standard and classification, e.g. BS 8468•3.2:202(Y’. typeiM ESCBRN 15;
b) the manufacturer, supplier or Importer Identified by name, trademark, or other means of identification; and
c) the manufacturers model designation.
6.3 Filters
Where lilters are attached but are not integral with the hood, they shall be marked with the device classification and colour coded orange/white (denoting CBRN/partlculate).
6.4 Packaging
All packaging (bulk and operational) shall he marked externally with at least the following information:
a) class. ic ‘M or ‘S’;
b) the standard identifier of this British Standard and classification. e.g. BS 8468’3.2:2O20, type 2 M ESCBRN 30;
c) the manufacturer, supplier or importer Identified by name, trademark, or other means of identification;
d) the manufacturer’s model designation;
e) the date of end of shelf life and (If applicable) the date br nct inspection; equivalent pictogranis. where available, can be used (see Fgure2);
1) the manufacturer’s recommended conditions of storage (at least the temperature and humidity) or equivalent pictogram as shown in Figure 2:
g) the sentence: See information supplied by the manufacturer. at least in the official language(s) of the country of destination or the approprLate pictogram as shown in FtgureL
h) when the reliable performance of the device might be alTected by mass increase. e.g. absorption of humidity the mass shall be given on the packaging that protects against humidity;
I) if the device is uittd with a mouthpiece and a nose dip the statement: “Do not speak during use.; anti
I) the sentence: “For single use only.’
7Information supplied by the manufacturer
The information supplied shall be in accordance with the relevant clauses of BS EN 403, and externalto the operational packaging.
The information shall explain the markings listed in Clause 6
The information shall include a warning that type 1 devices are not suitable for escape from fire.The information shall include the sentence:”For single use.”
lf the manufacturer provides information concerning decontamination and disposal, the informationshall specify the agent to be used and the process to be followed.