[Ord. No. 250 Art. IX §1, 12-3-1951]
The term "liquefied petroleum gases" as used
in this Chapter shall mean and include any material which is composed
predominantly of any of the following hydrocarbons, or mixtures of
them; propane, propylene, butane (normal or iso-butant), and butylenes.
[Ord. No. 250 Art. IX §2, 12-3-1951]
No system for the utilization of liquefied petroleum gases nor
facilities for the charging of containers nor for the storage or handling
of liquefied petroleum gases shall be installed unless a written permit
has first (1st) been obtained from the City Clerk. No permit shall
be required for the utilization of liquefied petroleum gases from
I.C.C. cylinders only. No permit shall be issued unless such installation
complies with the provisions of this Chapter.
[Ord. No. 250 Art. IX §3, 12-3-1951]
All liquefied petroleum gases shall be effectively odorized
by an agent of such character as to indicate positively, by a distinctive
odor, the presence of gas down to concentrations in air of not over
one-fifth (1/5) of the lower limit of combustibility.
[Ord. No. 250 Art. IX §4, 12-3-1951]
No facilities for receiving liquefied petroleum gases in bulk
form tank cars or tank trucks or facilities for transferring liquified
petroleum gases from bulk storage to tank trucks or to I.C.C. containers
shall be located within the fire limits, nor in closely built up sections
nor within fifty (50) feet of any other property which may be built
upon, nor shall any other property be built upon or located within
fifty (50) feet of any such facilities.
[Ord. No. 250 Art. IX §5, 12-3-1951]
Liquefied petroleum gases shall be utilized only in systems
approved by the Underwriters' Laboratories, Inc., or similarly recognized
testing laboratory and satisfactory to The Buildings and Grounds Committee.
[Ord. No. 250 Art. IX §6, 12-3-1951]
All domestic and commercial liquefied petroleum gas consuming
appliances shall have their correctness as to design, construction
and performance certified by the American Gas Association and shall
bear the American Gas Association seal of approval for liquefied petroleum
gas or shall be certified and approved by a similarly recognized authority
and satisfactory to The Buildings and Grounds Committee.
[Ord. No. 250 Art. IX §7, 12-3-1951]
Marketers and users shall exercise every precaution to assure
that only those gases for which the system is designed, examined and
listed, are employed in its operation, particularly with regard to
pressures.
[Ord. No. 250 Art. IX §8, 12-3-1951]
Containers and first (1st) stage regulators shall be located
outside of buildings other than those especially provided for this
purpose. Only containers constructed and tested in accordance with
either (1) Interstate Commerce Commission Specifications, (2) Unfired
Pressure Vessel Code of the American Society of Mechanical Engineers
or (3) The American Petroleum Institute-American Society of Mechanical
Engineers Code shall be used. Such containers shall bear proper markings
indicating compliance with the Code or specifications under which
the container is constructed.
[Ord. No. 250 Art. IX §9, 12-3-1951]
A.
Each
container for liquefied petroleum gas shall be located with respect
to nearest important building or group of buildings or line of adjoining
property which may be built upon in accordance with the following
table.
|
Minimum distance
| |||
|---|---|---|---|
|
Water capacity per container
|
Underground
|
Aboveground
| |
|
Less than 125 gallons
|
10 feet
|
None
| |
|
125 to 500 gallons
|
10 feet
|
10 feet
| |
|
500 to 1200 gallons
|
25 feet
|
25 feet
| |
|
Over 1200 gallons
|
50 feet
|
50 feet
| |
B.
No
container for liquefied petroleum gases shall exceed thirty thousand
(30,000) standards U.S. gallons.
[Ord. No. 250 Art. IX 10, 12-3-1951]
Containers made in accordance with the specifications of the
Interstate Commerce Commission and regulating equipment for such equipment
shall not be buried. Containers approved for the purpose may be buried
if the top of the container is placed below the established frost
line, but in no case shall the top of the tank be less than two (2)
feet below the surface of the ground. Containers shall be set on a
firm foundation and surrounded with soft earth or sand well tamped
in place. Where necessary to prevent floating, containers shall be
securely anchored or weighted. Containers shall be protected against
corrosion in a manner consistent with good practices and satisfactory
to Buildings and Grounds Committee. It shall not be necessary to cover
the portion of the container to which the manhole and other connections
are affixed.
[Ord. No. 250 Art. IX §11, 12-3-1951]
I.C.C. containers shall be set upon a firm foundation or otherwise
firmly secured. Other containers installed aboveground shall be provided
with substantial masonry or non-combustible structural supports on
firm masonry foundations. Horizontal containers shall be mounted on
saddles and secured thereto in such a manner as to permit expansion
and contraction. Every container shall be so supported as to prevent
the concentration of excessive loads on the supporting portion of
the shell. Structural steal supports shall be protected against fire
in a manner consistent with good practices, except that non-fire-proofed
steel supports, if mounted on concrete pads or footings, may be used
if the distance from the outside bottom of the container shell to
the ground does not exceed two (2) feet or not over five (5) feet
where the container is in an isolated location and the installation
is approved by The Buildings and Grounds Committee.
[Ord. No. 250 Art. IX §12, 12-3-1951]
Readily ignitable materials, weeds and long grass shall not
be within ten (10) feet of any container.
[Ord. No. 250 Art. IX §13, 12-3-1951]
Aboveground containers, other than I.C.C. Containers shall be
electrically grounded in an effective manner. Containers shall be
bonded together during filling operations.
[Ord. No. 250 Art. IX §14, 12-3-1951]
The filling pipe inlet shall not be located inside a building.
Where accessibility of the inlet terminal to a driveway prevents its
location adjacent to the container, a terminal may be located not
less than ten (10) feet from any building and not less than five (5)
feet from any driveway. Terminal shall be so arranged as to prevent
mechanical injury or tampering by unauthorized persons and shall be
kept locked when not in use. Fill pipe shall be provided with automatic
valves to prevent back flow in case the filling connection is broken.
[Ord. No. 250 Art. IX §15, 12-3-1951]
The transfer of liquid from tank car or tank truck to storage
or between containers of various types may be accomplished by the
pressure differential method, by pumping or by gravity, provided such
transfer of liquid is done in a manner consistent with nationally
recognized good practices. In all cases at least one (1) attendant
shall remain close to the transfer connection from the time the connections
are first made until they are disconnected.
[Ord. No. 250 Art. IX §16, 12-3-1951]
The charging or changing of customers' containers should preferably
be by daylight only. No artificial light involving flames or sparks
shall be used in the vicinity of charging operations. Approved explosion-proof
flash lights may be employed, or incandescent electric lamps with
switches, conduits, fittings and fixtures suitable for outdoor installation
may be used if installed in accordance with the requirements for garages
of the National Electrical Code.
[Ord. No. 250 Art. IX §17, 12-3-1951]
Containers shall be provided with the necessary shut-off valves,
back pressure valves, excess flow valves, safety valves and liquid
level gauging devices, all in conformity with nationally recognized
good practices. Safety valves shall be arranged to afford free vent
to the outer air with discharge not less than five (5) feet horizontally
away from any opening into a building which is below such discharge.
[Ord. No. 250 Art. IX §18, 12-3-1951]
A.
Vaporizers
shall be located outside of buildings except as follows:
1.
Buildings devoted exclusively to manufacturing and distributing operations.
2.
Vaporizers of not more than one (1) quart capacity if vaporization
is not effected by artificial means and vaporizer is located close
to a point at which pipe to vaporizer enters building. Vaporizers
having a liquid capacity of one (1) quart or less designed primarily
for purpose of domestic service employing artificial heat for vaporization
and with vaporizer chamber integral may be installed in a separate
building used exclusively for this purpose. The device that supplies
the necessary artificial heat for effecting vaporization shall be
located in a separate room or compartment separated by substantially
vapor-tight fire walls from equipment such as vaporizers, pumps and
mixing devices.
[Ord. No. 250 Art. IX 19, 12-3-1951; Ord. No. 489 §1, 12-5-1983]
A.
Piping
shall be standard full weight wrought iron, steel, brass or copper
pipe; or approved seamless copper, brass or other approved non-ferrous
gas tubing suitable for a safe working pressure of not less than one
hundred twenty-five (125) pounds. Approved flexible connections may
be used on either the high pressure or low pressure side of the system.
Fittings for the use with wrought iron and steel pipe may be of a
type consistent with recognized good practices in connection with
the utilization of liquefied petroleum gases, but welded construction
for joints shall be employed wherever possible. Cast iron fittings
shall be prohibited. Only approved fittings shall be used with seamless
copper, brass or other approved non-ferrous gas tubing. Fittings shall
be capable of withstanding a pressure of at least one hundred twenty-five
(125) pounds. Extra heavy fittings shall be used for pressures exceeding
one hundred twenty-five (125) pounds. All piping for conveying as
or liquid shall be suitable for a safe working pressure of not less
than one hundred twenty-five (125) pounds and shall be tested after
assembly and proved free from leaks at not less than normal operating
pressures.
B.
Notwithstanding
the provisions hereinabove contained plastic pipe or tubing and compatible
fittings shall be used outside underground only and shall conform
with Specifications for Thermoplastic Gas Pressure Pipe, Tubing and
Fittings, ASTM D2513, or Specification for Reinforced Epoxy Resin
Gas Pressure Pipe and Fittings, ASTM D 2517.
For use of plastic pipe, tubing and fittings in undiluted liquefied
petroleum gas piping systems, see the Standard for Storage and Handling
of Liquefied Petroleum Gases, ANSI/NFPA No. 58.
