DEFINITIONS, FLAME TRAPS, FLAMMABLE MATERIALS, FLARE STACKS, GASES, IGNITION,MARKING, TEMPERATURE MEASUREMENT, TEST EQUIPMENT, TESTING, TESTING CONDITIONS,VENT PIPES
被代替标准
Z343-98 (R2002)
适用范围
1.1
This Standard describes test methods for use in assessing the performance of
flame arresters intended for use with Group C and D flammable gases and vapours
as defined in CSA Standard C22.1 in applications such as flare stacks, firebox
air intakes, and vent lines. This Standard does not apply to details of
construction, specification, selection, application, maintenance, or any of the
other factors which must be considered for a suitable flame arrester
installation.
Note: See Appendix A for general background information concerning flame
arresters and test procedures. 1.2
This Standard applies to flame arrester installations where the ambient
operating temperature is in the range -45 to 100°C, and the maximum operating
pressure is 108.25 kPa (absolute), unless otherwise stated by the manufacturer
(see Clause 1.4). This Standard outlines the testing of complete flame
arrester untis only (consisting, as a minimum, of a flame arrester housing and
flame arrester element), and does not apply to the testing of individual
components thereof. Performance tests of a flame suppresion system, which may
form part of a flame arrester assembly, are not within the scope of this
Standard. A flame warning system is mandatory for any in-line flame arrester
being tested to this Standard.
Notes:
(1) The above temperature range and pressure limits are intended to represent
normal outdoor seasonal temperature and pressure extremes to which a flame
arrester may be exposed in normal use.
(2) A device tested to this Standard may be operated at higher pressures, but
flame arresting capabilities at pressures above 108.25kPa (absolute) are not
within the scope of this Standard, unless performance claims in this regard are
stated by the manufacturer (see Clause 1.4). Internal operating pressures
would normally be expected to be lower than 108.25 kPa (absolute) where a low
flow or loss of flow condition exists--the condition of most concern.
(3) If a flame suppression system is included with an in-line flame arrester t
enhance the overall performance of the system, the intent of this Standard is
to assess the performance of the in-line flame arrester element only.
Accordingly, this may require that a flame suppression system which is supplied
with an in-line flame arrester be disabled for certain tests in this Standard. 1.3
This Standard does not apply to the following:
(a) flame arresters intended for installations in, on, or associated with
explosion-proof electrical enclosures as defined in CSA Standard C22.2 No. 30;
(b) flame arresters used for intake and exhaust system explosion protection of
diesel engines;
(c) flame arrester systems using other than porous media flame arrester
elements. These may be employed at the user's discretion, but are not within
the scope of this Standard; and
(d) flame arresters for use in oxygen-enriched atmospheres.
Notes:
(1) Requirements for flame arresters installed on explosion-proof enclosures
are stated in CSA Standard C22.2 No. 30.
(2) The tests in this Standard are designed to assess porous media-type flame
arresters only; application of these tests to other flame arresting
technologies that do not use porous media may not be appropriate. 1.4
The test requirements of this Standard are minimum performance requirements.
Performance claims specified by the manufacturer, for example, those concerning
flame arrester operating pressure, which exceed these minimum stated
performance requirements shall be verified in accordance with the procedures of
this Standard.