CAP. 172]
Openings in enclosure.
Door, etc., of enclosure.
Ventilation of enclosure.
Barrier.
Competent operator.
Places of Public Entertainment.
137. The openings through which the necessary pipes and cable pass into the enclosure shall be efficiently sealed or bushed, as the case may be.
138. The openings in the front face of the enclosure shall be covered with glass and shall not be larger than is necessary for effective projection and observation.
Each such opening shall be fitted with a screen of fire-resisting material, which can be released from both the inside and the outside of the enclosure so that it automatically closes with a close-fitting joint. Screens shall be so constructed and arranged that they can all be released simultaneously from the operating position near any of the projectors. Openings shall not exceed three for each projecting apparatus. All screens shall be closed at the conclusion of the last daily performance.
139. The door of the enclosure and all openings, bushes and joints shall be so constructed and maintained as to prevent as far as possible the escape of any smoke into the auditorium or any part of a building to which the public are admitted.
140. Adequate means of ventilation shall be provided, with sufficient inlets and outlets to ensure a constant supply of fresh air. Inlets and outlets shall communicate directly with the outside of a building, and shall be so arranged as not to expose the operator to a direct draught.
141. If the enclosure is inside the auditorium, either a suitable barrier shall be placed round the enclosure at a distance of not less than two feet from it, or other effectual means shall be taken to prevent the public from coming into contact with the enclosure : Provided that this requirement shall not apply where the enclosure is of permanent construction and is not entered from the auditorium.
142. The enclosure shall be in the charge of a competent operator who shall be present in the enclosure during the whole time that the apparatus is in use. This shall not prevent the operator from leaving the enclosure for a short
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