BS ISO 10294-5 pdf download

BS ISO 10294-5 pdf download Fire resistance tests — Fire dampers for air distribution systems — Part 5: Intumescent fire dampers
7Scope
This part of ISO 10294-5 describes the test requirements related to intumescent fire dampers. lt identifies theminor modifications needed to adapt the test method described in ISO 10294-1 (which was intended formechanical dampers) to suit intumescent fire dampers. Additional tests are included to give an assessment ofthe operational reliability of intumescent fire dampers.
This test is intended for intumescent fire dampers that are expected to be classified as El dampers inaccordance with ISO 10294-2. Without the addition of a mechanical damper, they are unable to achieve theS” classification, which includes a leakage limit imposed at ambient temperatures.
2 Normative references
The following referenced documents are indispensable for the application of this document. For datedreterences, only the edition cited applies. For undated reterences, the latest edition of the referenceddocument (including any amendments) applies
ISO 10294-1:1996, Fire resistance tests — Fire dampers for air distribution systems — Part 1: Test method
SO 10294-2:1999,Fire resistance tests — Fire dampers for air distribution systems — Part 2: Classification.criteria and field of application of test results
ISO 10294-3:1999,Fire resistance tests — Fire dampers for air distribution system — Part 3: Guidance on the
test methodISO 10294-4: 2001, Fire resistance tests — Fire dampers for air distribution systems — Part 4: Test ofthermal release mechanism
ISO 13943,Fire safety- Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 1 3943 and the following apply.
3.1
intumescent
term describing the phenomenon of expansion in excess of normal thermal expansion under the action of heat normally generated by the fire
3.2
intumescent fire dampers
non-mechanical device, installed in a ducted system that intumesces when exposed to hot gases and acts as a barrier to fire and hot smoke
3.3
intumescent sheet
intumescent material manufactured in rigid or flexible thin sections, typically 1 mm to 4 mm thick, usually cut into strips for incorporation into the fire damper
3.4
covered intumescent
partly enclosed intumescent material to provide protection, modify the behaviour, improve the surface finish and/or enhance the aesthetics of the fire damper
3.5
skinned intumescent material
totally enclosed intumescent material on all faces and edges to provide protection, modify the behaviour and improve the surface finish and/or the aesthetics of the fire damper
3.6
specially shaped intumescent
intumescent material formed into special contours by extrusion, dipping, moulding, machining or spraying onto formers or mandrills
4 Procedure
4.1 General considerations
4.1.1 Apparatus
The apparatus for the fire test shall be as described in ISO 1 0294-1 :1 996. As intumescent dampers give off some moisture, a suitable condensing device shall be installed before the flow-measuring device. This will be deemed to be effective if the gas temperature within the flow-measuring device does not exceed 40 °C at any time during the test.