31 July 2011 C1 CIVIL AVIATION DEPARTMENT HONG KONG ...

5 Additional Information5.1 EASA CS 25.853(h) states that:'Each receptacle used for the disposal of flammable waste material must befully enclosed, constructed of at least fire resistant materials, and must containfires likely to occur in it under normal use. The ability of the receptacle tocontain those fires under all probable conditions of wear, misalignment, andventilation expected in service must be demonstrated by test.'Similar wording is provided in BCAR Section D, Chapter D4-3 Paragraph6.4.1, JAR 25.853(h) and FAR 25.853(h) at Amendment 25-83.5.2 For compliance to be shown, such receptacles (but see paragraph 5.4 for toweldispensers) shall be constructed of materials which are fire resistant * , andwhich in addition, will retain sufficient mechanical properties as to containsuch a fire as may develop by burning of materials such as paper towels, asmay be within the receptacle. (It should be noted that although athermoplastic material may be 'fire resistant' it would not necessarily retainadequate mechanical properties in the case of a fire.) The receptacle shall becompletely enclosed with the exception of a self-closing entry flap or door,which itself shall be rigid, and when closed, form as airtight a seal as ispracticable. Entry flaps or doors shall be designed so that they remainself-closing even after exposure to a fire within the receptacle.5.3 It is, however, permissible for receptacles to be open topped provided that theyare mounted in a cabinet which itself complies with paragraph 5.2. In thisinstance, the door of the cabinet shall be of a robust construction and such asto ensure an adequate seal and to withstand misuse in service. Such cabinetsshall not contain other flammable materials, potential fire sources (e.g.electrical apparatus) or apertures which would either allow air to feed a fire orpermit a fire to spread beyond the cabinet (e.g. through apertures provided forservices).5.4 It is accepted that some receptacles, e.g. paper towel dispensers, cannot readilybe designed to meet the above requirements. In such instances, they shall beso designed and positioned within the compartment to ensure that:(a)the likelihood of the depositing of cigarette ends, etc., into them isminimised; and*Fire resistant is defined in EASA CS-Definitions.31 July 2011 AN-83 P.4