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BS EN ISO 11990:2003

$142.49

Optics and optical instruments. Lasers and laser-related equipment. Determination of laser resistance of tracheal tube shafts

Published By Publication Date Number of Pages
BSI 2003 24
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PDF Pages PDF Title
5 TitlePage – Optics and optical instruments�— Lasers and laser-related equipment�— Determination o…
7 TableofContent – Contents Page
8 Foreword – Foreword
9 Introduction – Introduction
11 Scope – 1��� Scope
NormativeReference – 2��� Normative references
12 Clause1 – 4��� Principle
Clause1 – 5��� Significance and use of the test
UntitledSubclause2 – 5.1��� This document
UntitledSubclause2 – 5.2��� A large number and range of variables are involved in laser ignition …
UntitledSubclause2 – 5.3��� Since it is conceivable that an oxygen-enriched atmosphere may be enc…
UntitledSubclause2 – 5.4��� A flowrate of
UntitledSubclause2 – 5.5��� Opportunities for development: variations of this method can be appli…
13 Clause1 – 6��� Apparatus
Subclause2 – 6.1��� Gas supply system
UntitledSubclause3 – 6.1.1��� The gas supply system shall provide oxygen to the tracheal tube at …
UntitledSubclause3 – 6.1.2��� Other arrangements, such as an oxygen flood valve for rapidly purgi…
Subclause2 – 6.2��� Containment box
UntitledSubclause3 – 6.2.1��� The containment box is a means to control the environment around th…
UntitledSubclause3 – 6.2.2��� The typical containment box shall have the following characteristics:
UntitledSubclause3 – 6.2.3��� Other configurations may be used, as long as the requirements of th…
Subclause2 – 6.3��� Smoke evacuation
UntitledSubclause3 – 6.3.1��� A device to safely remove smoke resulting from any burning tube sho…
UntitledSubclause3 – 6.3.2��� The smoke evacuation device shall not interfere with maintaining th…
14 Subclause2 – 6.4��� Lasers and delivery systems
UntitledSubclause3 – 6.4.1��� Various laser types emitting radiation of wavelengths in the visibl…
UntitledSubclause3 – 6.4.2��� The laser radiation shall be applied using the specific focusing/ha…
15 UntitledSubclause3 – 6.4.3��� Bare fibres, contact tips, contact fibres, or other devices that co…
UntitledSubclause3 – 6.4.4��� The power of radiation transmitted by these systems should be verif…
Subclause2 – 6.5��� Oxygen analyser
UntitledSubclause3 – 6.5.1��� Any device that can measure the concentration of gaseous oxygen wit…
UntitledSubclause3 – 6.5.2��� The oxygen sensor should be positioned to minimize the chance of it…
16 Clause1 – 7��� Reagents and materials
UntitledSubclause2 – 7.1��� Oxygen
UntitledSubclause2 – 7.2��� Nitrogen or other inert gas
Clause1 – 8��� Preparation of test specimen
UntitledSubclause2 – 8.1��� The test specimen shall be any material, device or system used as a t…
UntitledSubclause2 – 8.2��� Five test specimen shall be used, each with
UntitledSubclause2 – 8.3��� Each test specimen shall be prepared according to the manufacturer’s …
UntitledSubclause2 – 8.4��� The test specimen shall be free from extraneous materials such as blo…
UntitledSubclause2 – 8.5��� The test specimen and apparatus shall be equilibrated to
UntitledSubclause2 – 8.6��� The test specimen shall not be preconditioned in an oxygen-enriched a…
Clause1 – 9��� Preparation of apparatus
UntitledSubclause2 – 9.1��� Ensure that the containment box is clean (i.e. free of contaminants)….
UntitledSubclause2 – 9.2��� Ensure that the laser is in working order, that its operation is unde…
UntitledSubclause2 – 9.3��� Ensure that there is adequate gas for the test and that means are pro…
UntitledSubclause2 – 9.4��� Have other methods of fire extinguishment, e.g. carbon dioxide fire e…
Clause1 – 10��� Test procedure
UntitledSubclause2 – 10.1��� Perform the test at
UntitledSubclause2 – 10.2��� Insert the test specimen into the containment box. Connect the gas s…
UntitledSubclause2 – 10.3��� Place the enclosure covers on the top of the containment box, as sho…
17 UntitledSubclause2 – 10.4��� Determine that the inert gas flush is working properly.
UntitledSubclause2 – 10.5��� Determine that the smoke evacuation system is working properly and w…
UntitledSubclause2 – 10.6��� Flow oxygen into the containment box at a rate and time period suffi…
UntitledSubclause2 – 10.7��� Establish an oxygen flowrate of
UntitledSubclause2 – 10.8��� Position the laser so that the laser beam is perpendicular to the su…
UntitledSubclause2 – 10.9��� Verify that the following standardised test parameters are correct d…
UntitledSubclause2 – 10.10��� Starting with a
UntitledSubclause2 – 10.11��� Increase the laser power in steps by the minimum increment availabl…
18 UntitledSubclause2 – 10.12��� Continue increasing the power until burning occurs or the test spec…
Clause1 – 11��� Interpretation of results
UntitledSubclause2 – 11.1��� Any test specimen that experiences combustion or damage, as defined in
UntitledSubclause2 – 11.2��� Any damage or blemish (see
Clause1 – 12��� Test report
20 Bibliography – Bibliography
22 National foreword
National foreword
BS EN ISO 11990:2003
$142.49