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420
<br />o~ STQRAGE OF CLASS 11 LIQUIDS.
<br />No container containing Class 11 liquids, of over five gallons capacity
<br />ma.y be used to fill other containers and appliances unless outside the building or in ?. s
<br />room in accordance with Section X15, and all drawing, except from safety cans, shall,
<br />where the nature of the liquid permits, be as provided for in Section QSI and 982.
<br />At service stations the dispensing of alcohol and other flam.~able anti-freeze
<br />solutions from drums shall be done outside the building, using pump of gravity discharge.
<br />Air pressure discharge shall not be used.
<br />918. EXPOSED 1AINDO~,FTS MUST NAVE 4dIRED GLASS.
<br />Any building, other than a frame building, within the limits given in Section
<br />951, containing more than 50Q gallons of flammable liquids-in other than sealed contain-
<br />ers.,. shall have all windows in side and rear walls and above the first floor on street
<br />fronts, exposed by other buildings within fifty feet, provided with vrired glass in
<br />metallic sash and frame.
<br />of NE~rI MANNFACTURING PLANTS,
<br />Any manufacturing plant established after date of enactment of ordinance i.n a
<br />building in which persons are employed above the second story, shall have all rooms,
<br />in vrhich Class I and~Il liquids a,re mixed or stored in receptacles permitting the es-
<br />cape of vapor, constructed in accordance vrith Section Q15.
<br />920• EXISTING ~•~IANUFACTURING PLANTS.
<br />In existing manufacturing plants vrhere persons are employed above the second
<br />floor, all elevator, stair and other yells or vertical openings communicating to rooms
<br />in vrhich Class I, and II liquids are mixed or stored in receptacles permitting escape
<br />of vapor, shall be enclosed and provided with self-closing fire. doors or trap doors with
<br />heat releasing devices arranged to close doors automatically in case of fire.
<br />921. MANUFACTURING PLANTS PROHIBITED IN BUILDINGS OCCUPIED AS DS~IELLINGS.
<br />No manufacturing plant shall be located in any building used as a duelling for
<br />more than one family unless all Class I lieuids are kept in safety cans, not exceeding
<br />one quart in capacity, or in outside storage tanks as given in Section 951, vrith no
<br />discharge inside the building.
<br />121. FETTLES, VATS, ETC.
<br />Kettles, vats, saturators and other vessels used in manufacturing ~orocesses, and
<br />containing more than five gallons of flammable liquids, shall not be located within
<br />five feet of combustible material nor vrithin five feet of any exit, unless tyro or more
<br />exits are provided, and all combustible floor thereunder within a radius of ten feet
<br />shall be protected ~•rith noncombustible coverings. All kettles and other open vessels
<br />shall be~provided with substantial covers arranged to close automatically in case of
<br />fire or which c?,n be easily a.nd readily placed in position, or shall be provided with
<br />an adequate automatic extinguishing device.
<br />X23. VENTILATION.
<br />Rooms in which Class I and II liquids are used in open vats, pans or other vessels,
<br />or in which Class I, II and III liquids are heated or otherwise treated in such manner
<br />as to produce flammable vapor, shall be well ventilated. S~lhere natural ventilation is
<br />not sufficient the Chief of the Bureau of Fire Prevention may require forced ventilation
<br />with a vent opening of at least 20 square inches in the wall at the floor level near
<br />each open receptacle containing such liquids, or each heating device from T,~hich vapors
<br />may escape and opposite to any door or other air inlet. Such openings shall be covered
<br />vrith 2 x 2 mesh No. 16 galvanized vrire vreb and shall be kept clear of all obstructions.
<br />From each vent opening a flue, of at least 20 square inches area and of non-combustible
<br />materials, built into the vaall or floor or securely fastened thereto and so arranged
<br />as not to be subject to mechanical injury, shall conduct to ?.nd through a sparkless
<br />eshaust fan, to be run continuously, and vrhich shall be of sufficient size to change the
<br />air in the room completely every five minutes. All discharge outlets of vent pipes
<br />shall be provided +:~ith 12 x 12 mesh or equivalent non-corrodible vrire screen and. shall
<br />be so located. that they ~A+ill not expose surrounding property and shall be acceptable to
<br />the Chief of the Bureau of Fire Prevention. Any other equivalent system of ventilation
<br />may be used when approved by the Chief of the Bureau of Fire Prevention.
<br />124. E%TINGUISHERS REQUIRE.
<br />~rlhere flamma.bl.e liquids are kept, used or handled a quantity of loose r_an-
<br />combustible absorbents, such as dry sand or ashes, together with pails or scoops; and
<br />iial
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