ORDINANCE NO. 8874 - Laserfiche WebLink

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415 VAL4'ES AATD ACCESSORIES. (a} Valves, regulating, gauging and otA.er necessary equipment shall be protected against tampering and. mechanical damage in an approved manner. (b) All connections Ito containers, except gauge connections and safety relief connections, shall be provided with approved shut-off valves close to the container. (c) Valves in the assembly of systems using tow or more cylinders or drums shall be so arranged that the change of cylinders or drums may be without shutting down the system. (d) When cylinders or •d.rums a.re not in use , outlet valves shall be kept tightly c'dflsed even though cylinders may be considered empty. (e) Approved gauging devices shall be employed on all storage containers other than cylinders and drums. SOS DIKES. -The Chief of the Bureau of Fire Prevention, where the slope of the ground or other local conditions arould permit above ground containers,-in case of rupture or overflow, to endanger adjacent property, shall require each container to be surrounded by a, dike of such capacity as may be considered necessary but not more than the capacity of the container. S0~• PIPING. (a) Piping shall be wrought iorn, steel, brass, or copper pipe; or approved seamless copper, brass or other approved .nonferrous tubing. All piping for conveying gas or liquid-shall be suitable for a safe working pressure of not less than 125 pounds. A11 piping for conveying gas or liquid shall be. tested and proven free ftom leaks at not less than normal operating pressure. (b) In a.ny system in which compressed gas in liquid form without pressure reduction enters the building only hea{ry ~•ralled seamless brass or copper tu?~ing shall be used, Urith an interval diameter not greater than 3/32-inch, and_ a t4~a11 thic'_~ness not less than 3~-inch; provided that this requirement o'/~~` shall not apply to commercial ga.s plants, bulk stations where cylinders, drums or tank trucks are filled, nor to industrial vaporizer buildings. (c) Joints in wrought iron and steel piping shall be of ~,relded construction, or shall. be made Frith fittin~•s capable of withstanding a pressure of at .least 125 pounds per squire inch:'or~1ess; extra heavy fittings shall be used for pressures exceeding 125 pounds per square inch. Cast-iron fittings shall not be used. Joints or brass or copper pipe, or approved seamless copper, brass or' other approved non-ferrous tubing shall be by means of approved fittings. (d) Piping shalt be run as directly as practicable; provision shall be made for expansion, contraction, jarring and vibration and for settling of container.. At points ~•rhere piping passes through outside walls below ground level, suitable provision shall be made to insure substantial gas 'tightness. (e) Piping outside buildings shall be protected against mechanical injury. Underground piping shalllE buried belo~•~ the established frost line. S10 FIT,TIING CON1>IECTIODTS. - (a) The filling pipe inlet terminal shall not be located inside a building. It shall. be protected in a substantial manner against mechanical injury and tempering by unauthorizied persons. Filling pipe inlet terminals on containers other than those conforming to Interstate Commerce Commission Reguls.tions shall be located. not less than 10 feet from a.ny building a.nd s~rhere yor~cticable nbt less than 'S feet from any drive~;ray and shall be kept locked when not in use. (b) All containers, other than those complying writ h the Interstate. Commerce Commission Regalationa shall have all connections, except relief connections, equipped with approved automatic excess flo*.~r valves, provided, however, that fill connections shall be equipped with approved back-pressure check valves, to prevent discharge of contents in case connections are broken. These excess flo~~r and back-pressure check valves shall be located inside of the container or at a boint outside ~.rhere the line enters the containers;. in the 1__atter case, installation shall be made in such a manner than any undue strain beyond the excess floTrr or back-pressure valve will not cause breakage between the container and such valve. G?,uging devices which do not involve the f3:ow of liquid or ~~~h`ich ar. a so constructed that out*rra.rd flo~.•r of container contents shall not exceed that passed ~y a No. 5~ dril 1 size need not be equipped with excess flot.~ valves. ` S?~ SAFETY DEVICES.