Section 27-827
§ 27-827 General requirements. For the purpose of this subchapter fuel
oil shall mean hydrocarbon oils as classified in reference standards RS
14-3 and RS 14-12 and shall have a flashpoint not lower than one hundred
degrees Fahrenheit when tested in accordance with reference standard RS
14-13 and marketed under the following commercial grades: range oil or
no. 1 fuel oil; diesel oil or no. 2 fuel oil; no. 4 fuel oil; no. 5 fuel
oil; no. 6 fuel oil. Except as provided in section 27-4056 of this title
the use of crankcase refuse oil as fuel oil is prohibited. These
requirements shall not apply to (1) the use and installation of portable
burners not requiring a connection to a flue where such burners are of
the type commonly used for household purposes such as oil stoves, oil
heaters and oil lamps equipped with a woven wick; (2) portable apparatus
such as blow torches, soldering pots, tar heaters, snow melters, etc.;
(3) storage tanks for oils used in industrial process such as cracking,
distilling, manufacture of gas, or other similar processes. For the
requirements governing the storage of such oils see chapter four of this
title.
Section 27-828
§ 27-828 Fuel oil storage equipment. (a) General requirements for fuel
oil tanks. All tanks shall be designed and installed in accordance with
the provisions for steel work in subchapter ten of this chapter or in
accordance with the provisions of this subchapter.
(1) All fuel oil storage tanks shall be built of steel plates or
sheets, made by the open hearth or basic oxygen process. Such steel
shall be free from physical imperfections, and shall be new, in good
condition, and free from rust.
(2) Tanks shall be welded, riveted and caulked, or riveted and welded.
Flanges or other pipe connections may be welded. All caulking shall be
placed with round nose tools and without damage to the plates. Filler of
any kind between plates shall be prohibited.
(3) Tanks to be buried shall be cleaned and then coated on the outside
with two coats of red lead, or equivalent. They shall be further
protected by a coating of hot tar, asphalt, or equivalent rust resistive
material, applied at the work site. Tanks installed inside buildings
above ground shall be coated with one coat of red lead, or equivalent.
(4) All buried storage tanks shall be constructed of at least
one-quarter inch thick metal and shall be designed to withstand any
external loads to which the tank may be subjected.
(5) At the time of installation all storage tanks shall bear a
permanently-fixed plate, spot welded or equivalent, bearing the name of
the tank manufacturer, the gauge of the material, and capacity of the
tank. Shop fabricated storage tanks shall be installed without
structural alteration.
(6) All openings shall be through the top of the storage tank, except
that storage tanks of two hundred seventy-five gallon capacity or less,
located above ground but below the lowest story, may be provided with a
three-quarter inch opening for gravity discharge and a one inch opening
in the bottom for cleaning and protection against corrosion.
(7) Tanks for no. 1, no. 2, no. 3 and no. 4 commerical grade oils need
not have manholes. However, if manholes are used for such oils, the
manhole covers shall be bolted and made gastight. Tanks for no. 5 and
no. 6 commercial grade oils shall have manhole covers bolted or
otherwise secured to the tanks and kept hydrostatically tight at all
times.
(8) Tanks outside of buildings shall be electrically grounded in
accordance with the requirements for equipment grounding of the
electrical code of the city of New York.
(9) Tanks shall be located at least seven feet, measured in the most
direct manner, from any source of exposed flame unless protected as
provided in paragraph two or three of subdivision (a) of section 27-829
of this article and at least two feet from any surface where the
temperature exceeds one hundred sixty-five degrees Fahrenheit.
(b) Construction requirements, cylindrical tanks, except vertical
tanks above ground outside of buildings, more than two hundred
seventy-five gallon capacity.
(1) The thickness of cylindrical tanks, including oval, elongated
oval, or obround tanks of more than two hundred seventy-five gallon
capacity shall be subject to the following requirements:
a. Tanks thirty-six inches in diameter and less--at least 1/4 in.
shell and 1/4 in. heads.
b. Tanks thirty-seven to seventy-two inches in diameter--at least 1/4
in. shell and 5/16 in. heads.
c. Tanks seventy-three to one hundred twenty inches in diameter--at
least 5/16 in. shell and 3/8 in. heads.
d. Tanks over one hundred twenty inches in diameter shall be of at
least 3/8 in. steel and shall be stiffened by angle rings or equivalent
members so as to retain their cylindrical form.
(2) Dished heads for such tanks shall have a curvature the radius of
which is not greater than the diameter of the tank. Dished heads shall
be formed with an adequate cylindrical extension rim to provide a
welding or riveting surface. If flat heads are used, they shall be
braced in the same manner as described for the bracing of flat sides of
rectangular tanks.
(3) Riveting in single lap seams shall not exceed a pitch as follows:
a. Shell 1/4 in. thick 5/8 in. diameter rivets, 2 1/4 in. pitch.
b. Shell 5/16 in. thick 5/8 in. diameter rivets, 2 3/8 in. pitch.
c. Shell 3/8 in. thick 3/4 in. in diameter rivets, 2 1/2 in. pitch.
(c) Rectangular tanks, of more than two hundred seventy-five gallon
capacity.
(1) Plates for rectangular tanks of more than two hundred seventy-five
gallon capacity shall be at least 5/16 in. thick.
(2) Corners may be made up by bending the plates or by using angles.
(3) Minimum rivet diameter in seams shall be 5/8 in., and rivets shall
be spaced not more than 2 1/4 in. center-to-center.
(4) All flat surfaces of rectangular tanks shall be braced by
structural members or rods.
(5) When structural members are used, the rivet pitch shall not exceed
six inches.
(6) All structural members shall be designed in accordance with the
requirements of subchapter ten of this chapter.
(7) Connections between bracing members and the sides of the tank
shall be designed so that the connection will not fail before the member
will fail.
(d) All tanks except vertical tanks above ground, two hundred
seventy-five gallon or less capacity.
(1) All oil storage tanks of two hundred seventy-five gallon capacity
or less that are not buried shall have a minimum thickness of shell and
head plates of no. 10 manufacturer's standard gauge steel plate. Storage
tanks of sixty gallon capacity or less shall be similarly constructed
but need not be thicker than No. 14 manufacturer's standard gauge.
(e) Vertical storage tanks over one thousand gallon capacity located
outside of building above ground.
(1) Vertical tanks located outside of buildings above ground shall be
built of steel plates of the quality required for cylindrical tanks.
(2) The minimum thickness of shell or bottom plates shall be one
quarter of an inch, and the minimum thickness of roof plates one-eighth
of an inch. The thickness of shell plates shall be determined in
accordance with the following formula:
P x R x F
t = ------------------
T x E
where: t = thickness of shell plate in inches.
P = head pressure at bottom of ring under consideration in psi.
R = radius of shell, in inches.
F = factor of safety (taken as five).
T = tensile strength of plate, in psi as verified by mill
test certificate.
E = efficiency of vertical joint in ring under
consideration. E shall in no case be taken greater than one.
(3) Roof plates shall have single lap-riveted or welded watertight
seams, and the roof shall be built to shed water. Bottom plates shall
have single lap riveted or welded seams. Shell plate seams shall be
designed to develop the full strength of the plate.
(f) Storage containers of six gallons or less.
(1) Oil storage containers used with burners or oil burning heaters
and having a capacity of six gallons or less used in connection with
burners or oil-burning heaters shall be designed so as to withstand a
hydrostatic pressure test of at least five psi without permanent
deformation, rupture, or leakage, and shall be approved.
(2) All storage containers used with burners or oil burning heaters
shall be installed with rigid metal fasteners for wall, floor, or stand
type installations, and shall be protected against mechanical damage.
(3) Portable containers may be filled by a pump mounted on a storage
tank, provided that the pump is approved.
Section 27-829
§ 27-829 Location of tanks. (a) Inside of buildings, above ground, on
the lowest floor.
(1) TANK CAPACITY OF FIVE HUNDRED FIFTY GALLONS OR LESS. Storage tanks
having a capacity of five hundred fifty gallons or less may be installed
above ground on the lowest floor of a building, provided that such tanks
are mounted on adequate noncombustible supports, with the tank anchored
thereto. No more than five hundred fifty gallons of total storage
capacity may be connected to one burner or may be installed without the
protection provided in paragraph two or three of this subdivision.
(2) TANK CAPACITY MORE THAN FIVE HUNDRED FIFTY GALLONS BUT LESS THAN
ELEVEN HUNDRED GALLONS. Storage tanks having a capacity of more than
five hundred fifty gallons but less than eleven hundred gallons may be
installed above ground on the lowest floor of a building, provided that
all portions of such tanks above the floor are completely enclosed with
noncombustible construction having at least a two hour fire resistance
rating. Weep holes one inch in diameter shall be provided at least every
three feet along the bottom of the enclosure unless at least fifteen
inches of clearance, together with access door, is provided between the
tank and the enclosure.
(3) TANK CAPACITY ELEVEN HUNDRED GALLONS OR MORE. Storage tanks having
a capacity of eleven hundred gallons or more may be installed above
ground on the lowest floor of a building, provided that all portions of
such tanks above the floor are completely enclosed with noncombustible
construction having at least a three hour resistance rating. At least
fifteen inches clearance shall be provided over the tanks and on all
sides between the tanks and the enclosure. A noncombustible access door,
constructed so as to preserve the integrity of the fire resistive
enclosure, shall be installed in the enclosure above the point where the
capacity of the enclosure below the door sill would be equal to the
capacity of the largest tank installed. When the longest inside
dimension of the enclosure exceeds thirty-five feet, access doors shall
be installed at intervals not exceeding twelve feet. Columns, pipes, or
similar obstructions may project into the required fifteen inches of
space within the enclosure, provided that access door or doors are so
arranged that all portions of the enclosure are accessible for
servicing.
(4) MAXIMUM TANK SIZE. The capacity of individual storage tanks in no
case shall exceed twenty thousand gallons.
(b) Inside of building above the lowest floor.
(1) Fuel oil storage tanks having a capacity of two hundred
seventy-five gallons or less may be installed inside of buildings above
the lowest story when provided with a four inch thick concrete or
masonry curb, or with a metal pan of gauge equal to the gauge of the
tank, completely surrounding the tank and of sufficient height to
contain two times the capacity of the tank. The number of such oil
storage tanks shall be limited to one per story.
(2) Storage tanks having a capacity of two hundred seventy-five
gallons or less, installed above the lowest floor inside a building
shall be filled by means of a transfer pump supplied from a primary
storage tank located and installed as otherwise required by this
subchapter. A separate transfer pump and piping circuit shall be
provided for each storage tank installed above the lowest floor. No
intermediate pumping stations shall be provided between the storage tank
and the transfer pump. Appropriate devices shall be provided for the
automatic and manual starting and stopping of the transfer pumps so as
to prevent the overflow of oil from these storage tanks.
(3) A float switch shall be provided with the curb or pan around the
storage tank and shall be arranged so as to sound an alarm and stop the
transfer pump in case of failure of the tank or the control in the tank.
The operation of the float switch shall be tested at least once each
week. An alarm bell shall be located in the same room with the tank and
a visual and audible alarm shall be located in a maintenance office. The
enclosing and sealing of switches and wiring shall conform to the
requirements of the electrical code of the city of New York for devices
located in an atmosphere of flammable vapors.
(c) Inside of buildings, below ground.
(1) Storage tanks having a capacity greater than two hundred
seventy-five gallons may be buried inside a building provided that the
top of the tank is at least two feet below floor level. In lieu of two
feet of earth over the tank, the tank may be covered by concrete
flooring having the same thickness as the basement floor, but not less
than four inch concrete meeting the requirement of subchapter ten of
this chapter and reinforced with two inch by two inch mesh of at least
no. 20 U.S. standard gauge steel wire. Tanks shall be placed in firm
soil and shall be surrounded by clean sand or well-tamped earth, free
from ashes and other corrosive substances, and free from stones that
will not pass through a one inch mesh. When necessary to prevent
floating, tanks shall be securely anchored.
(2) No tank shall be buried within three feet of any foundation wall
or footing.
(d) Outside of building, below ground.
(1) Storage tanks located outside of buildings and below ground shall
be buried with the top of the tank at least two feet below ground. Tanks
shall be placed in firm soil and shall be surrounded by clean sand or
well-tamped earth, free from ashes or other corrosive substance, and
free from stones that will not pass through a one inch mesh. When
necessary to prevent floating, tanks shall be securely anchored.
(2) No tank shall be buried within three feet of any foundation wall
or footing.
(e) Outside of buildings, above ground.
(1) Storage tanks of a capacity greater than two hundred seventy-five
gallons located outside of buildings above ground shall be not less than
one and one-quarter (1 1/4) tank diameters and in no case less than ten
feet. from the line of adjoining property, the nearest building or
adjacent tank. The minimum clearance between individual tanks located
outside of buildings above ground and the line of adjoining property
which may be built upon shall be fixed by the following formula:
G - 275
M.C. = 10 + 4 (--------)
5000
where: M.C. = minimum clearance from nearest surface of tank to
adjoining property, in feet.
G = capacity of tank, in gallons.
The maximum allowable capacity of fuel oil storage tanks located
outside of buildings above ground shall be one hundred thousand gallons.
(2) Tanks shall be located so as not to obstruct or interfere with any
means of egress.
(3) Each storage tank shall be protected by an embankment or dike.
Such protection shall have a capacity at least one and one-half times
the capacity of the tank so surrounded and shall be at least four feet
high, but in no case shall the protection be higher than one-quarter the
height of the tank when the height of the tank exceeds sixteen feet.
Embankments or dikes shall be made of earth work with clay core, of
masonry, of reinforced concrete or of steel. Earth work embankments
shall be firmly and compactly built of good earth free from stones,
vegetable matter, etc., and shall have a flat section of at least three
feet at the top and a slope of at least one and one-half to two on all
sides. Concrete, masonry or steel dikes shall be designed so as to
conform safely all of the oil in the tank so surrounded. Embankments or
dikes shall be continuous and unpierced, and the outside toe shall be
located at least five feet inside of the property line, and no less than
five feet from a driveway or parking area.
(f) Tanks located along line of subways.
(1) No buried tank shall be placed within twenty feet of the outside
line of a subway wall. Where an above ground tank within a building is
located within the outer lines of the subway, or within twenty feet of
the outside line of the subway wall, such tank shall be placed within a
welded steel oiltight pan of not less than no. 18 manufacturer's
standard gauge metal suitably reinforced and of capacity to contain the
contents of the tank.
(2) For the purpose of the foregoing requirement, a subway shall be
deemed to include any subsurface railroad or rapid transit roadbed.
Section 27-830
§ 27-830 Piping. (a) Installation of piping and tubing.
(1) Exposed piping shall be protected against mechanical damage and
shall be adequately supported with rigid metal fasteners or hangers. All
pipes connected to buried tanks, except test well piping, shall be
provided with double swing joints at the tank.
(2) Only new wrought iron, steel, or brass pipe, or type K or heavier
copper tubing, or aluminum alloy tubing, properly identified, may be
used. Metal tubing when used for conveying oil shall be adequately
protected. Such tubing may be installed at the burner without
protection. Drawn tubing when used in domestic installations shall be of
at least 3/8 in. inside diameter up to the shut-off valve at the burner.
Soldered connections shall be prohibited.
(3) Overflow pipes, where installed, shall not be smaller in size than
the supply pipe.
(b) Relief valves.
(1) Where a shut-off valve is installed in the discharge line from an
oil pump, a relief valve shall be installed in the discharge line
between the pump and the first shut-off valve.
(2) A relief or pressure regulating valve shall be provided in the oil
piping system on the heater side of the shut-off valves.
(3) Relief valves shall be set to discharge at not more than one and
one-half times the maximum working pressure of the system. The discharge
from relief valves shall be returned to the storage tank or to the
supply line. There shall be no shut-off valve in the line of relief.
(c) Fuel oil heaters. Fuel oil heaters shall not be installed within
the steam or water space of a boiler. Fuel oil heaters and the
connecting piping shall be arranged to prevent oil leakage from being
transmitted to the boiler. This may be accomplished by any of the
following methods:
(1) By discarding the condensate from the heaters.
(2) By using approved double tube or other approved heaters.
(3) By means of a secondary hot water or steam heating system where
the water or steam from the boiler has no direct contact with the oil
heater.
(4) By a sight tank arrangement for collecting and inspecting the
condensate which is provided with a pump controlled by a hand switch for
returning the condensate to the normal return system.
(5) By such other method as may be permitted by the commissioner.
(d) Vent pipe.
(1) A vent pipe of iron or steel, without trap, draining to the tank,
shall be provided for each storage tank. The lower end of the vent pipe
shall not extend more than one inch through the top of the storage tank.
Cross-connection between a vent pipe and fill pipe is prohibited.
(2) Where a battery of storage tanks designed to hold the same grade
of oil is installed, vent pipes may be run into a main header.
(3) Vents shall be at least one and one-quarter inches in diameter for
storage tanks not exceeding eleven hundred gallons capacity and at least
two inches in diameter for storage tanks of eleven hundred gallons or
more except that vents for storage tanks of sixty gallon capacity or
less shall be at least one-half inch in diameter. Vents for tanks inside
of buildings above the lowest floor shall be run into the primary
storage tank vent.
(4) Vent pipes shall be provided with an approved weatherproof hood
having a free area of at least the pipe size area. Vent pipes shall
terminate outside the building in a nonhazardous location, at least two
feet from any building opening and not less than two feet nor more than
twelve feet above the fill pipe terminal, unless otherwise permitted by
the commissioner. If the vent pipe terminal is not visible from the fill
pipe terminal location, a one inch tell-tale line shall be connected to
the tank and shall parallel the fill pipe and terminate at the fill pipe
terminal with an unthreaded end. Such tell-tale lines shall be provided
with a check valve set to prevent flow of surface water to the storage
tank.
(e) Fill pipes.
(1) Fill pipes shall terminate outside the buildings, with the fill
pipe terminal located at or above grade, at least two feet from any
building opening and five feet from any subway grating at or below the
level of the fill pipe terminal. No fill pipe shall be less than two
inches in diameter, and no fill pipe for no. 6 oil shall be less than
three inch in diameter. Where no. 6 oil is used, the fill pipe terminal
shall be located within three feet of the curb, unless otherwise
required by the department of transportation or the transit authority.
Where there are facilities for the delivery tank truck to drive onto the
premises, the fill terminal may be located elsewhere than at the curb,
provided that the location complies with the other requirements of this
subchapter.
(2) Each storage tank shall be provided with a separate fill pipe,
except that where a battery of tanks is installed containing the same
grade of oil, a common fill and header pipe may be installed.
(3) Where the top of the storage tank is above the fill pipe terminal,
the fill pipe shall be connected to the top of the tank and provided
with a shut-off valve and swing check valve both of which shall be
located at the fill pipe terminal. However, the shut-off and check
valves may be installed in an accessible location inside the building at
or below the level of the fill pipe terminal.
(4) All fill pipe terminals shall be of an approved type, and shall be
provided with lugs for embedding in concrete. In lieu of lugs, a set
screw or threads to fasten the terminal to the fill pipe may be used.
The outer flange of the fill pipe terminal or the seal cap shall be
permanently marked "fuel oil". The fill pipe terminal shall be threaded
or provided with other equivalent means to receive the seal cap. The
seal cap shall be suitably slotted for receiving an opening wrench, and
an oilproof gasket inserted in a groove in the fill pipe terminal shall
be provided so as to make the seal cap leakproof. A strainer shall not
be required but, if used, shall be of at least one-eighth inch mesh.
Where a storage system for volatile flammable oil and a storage system
for fuel oil are to be used in the same premises, the terminal of the
fuel oil pipe shall be provided with a left-handed thread and the fill
pipe fitting shall be of a different size than that required for the
fill pipes to the tanks containing the volatile flammable oil.
(f) Piping from transfer pump to equipment or to storage tanks above
the lowest floor.
(1) The piping from a transfer pump to equipment at levels above the
lowest floor or to storage tanks at levels above the lowest floor in
buildings, the return piping, and vent piping shall comply with the
applicable provisions of subdivisions (a) and (d) of this section and
shall be enclosed in a shaft constructed of four inch concrete or
masonry having a four inch clearance from all pipe or pipe covering,
except that no such enclosures shall be required within the room
containing the pump, tank, or equipment where such room is itself
enclosed with construction and materials having at least a two hour fire
resistance rating. Provision shall be made for expansion in piping
without the use of expansion joints.
(2) Where it is necessary to make horizontal offsets in the supply
piping and pipe shafts such piping shall be enclosed in a sleeve of
other piping of at least no. 10 U.S. standard gage steel, two sizes
larger and arranged to drain into the shaft. Horizontal piping offsets
shall be further enclosed in construction having a two hour fire
resistance rating, except that no such enclosure or pipe sleeve shall be
required within the room containing the pump, tank, or equipment where
such room is itself enclosed with construction and materials having at
lease a two hour fire resistance rating.
(3) A drain pipe shall be installed at the base of shafts enclosing
the supply and overflow piping. The pipe shall lead to an open sight
drain or to an open sump.
(4) Oil lines for equipment or tanks shall be steel pipe ASTM A-53 or
A-106, grade B seamless, schedule 40 with welded connections up to the
oil tank or equipment, except that fittings at the tank or equipment,
shut off valves and other fuel oil flow and control devices may be
screwed or flanged.
(5) Pipe shafts shall not be penetrated by or contain other piping or
ducts.
(6) The piping shall be located and secured from movement so as to
prevent undue stress on the piping and to isolate the piping from
vibrations from any equipment.
(7) Pipe connections to the main header (supply or return) shall be
made from the top of the header, except for systems described in
paragraph (11) of this subdivision.
(8) Required air vents and vacuum breakers shall be designed for their
required use.
(9) All air vents and vacuum breakers shall be hard piped to a curb or
pan as provided for in subdivision (b) of section 27-829.
(10) In systems with equipment above the lowest floor where such
equipment is designed to operate utilizing fuel stored above the lowest
floor, piping diameters shall not exceed four inches. However, where an
applicant demonstrates by the inclusion of calculations on the plans
that a greater diameter is necessary to ensure the proper flow for the
functioning of the system, such greater diameter may be permitted. All
oil stored above the lowest floor shall be in tanks complying with
subdivision (b) of section 27-829 of this code; piping shall not be used
for fuel storage purposes.
(11) In systems with equipment above the lowest floor where such
equipment is designed to operate utilizing fuel pumped as needed from
the lowest floor and without utilizing fuel oil stored above the lowest
floor, piping diameters throughout such systems shall not exceed the
design flow (three times the maximum firing rate as calculated by the
engineer or architect). However, piping diameters within rooms
containing such equipment may exceed the calculated design flow pipe
size to provide limited reservoir storage to prime equipment, provided
such reservoir storage is counted toward the maximum two hundred
seventy-five gallons of oil storage per story as provided for in
subdivision b of section 27-829 of this code.
(g) Heating coils in storage tanks. The heating of oil in storage
tanks shall be by means of coils using low pressure hot water or steam,
or by means of electric heaters approved for use in oil storage tanks.
(h) Valves and devices to control the flow of oil.
(1) Where more than one storage tank is connected to a common supply
line, a shut-off valve shall be provided in the supply line at each
tank. Where more than one burner is connected to a supply line a
shut-off valve shall be provided at each burner. Where a single tank and
a single burner are installed, a shut-off valve shall be required in the
supply line at the tank and another at the burner. Valves shall be brass
or equivalent in corrosion and fire resistance, shall provide tight
shut-off, and shall be rated at one hundred twenty-five psi or greater
as required by the pressure in the system.
(2) Where a storage tank is located so that the top of the tank is
above the oil inlet to the burner or to the fuel pump, and the storage
tank capacity is greater than two hundred seventy-five gallons, the
supply line to the burner shall be provided with an approved anti-syphon
device. The device shall be located at the highest point in the supply
line. Where an approved foot valve is used in the tank and the tank is
constructed with a manhole, an anti-syphon device shall not be required.
No anti-syphon device shall be required where no. 6 fuel oil is used.
(3) The pressure in oil lines to burners located above the lowest
floor of a building shall not be more than is required to circulate oil
to and from the burners, and all parts of the oil system shall be
capable of withstanding the maximum working pressure in that part of the
system.
(4) A remote control shall be provided to stop the flow of oil to any
burner. Such control shall be located outside the entrance to the room
in which the burner is located and as close to such entrance as
practicable, except that when an outside location is impracticable, such
control may be located immediately inside the room in which the burner
is located, provided such location is accessible at all times. All such
controls shall be permanently labeled "remote control for oil burner."
On storage tanks of sixty gallon or less capacity used with manually
operated burners, such remote control may be installed in the supply
lines between tank and burner.
(5) Pressure in a storage tank for the purpose of discharging oil
shall be prohibited.
(6) In systems where either steam or air is used for atomizing the
oil, the oil and the atomizing supply shall be interlocked so that where
the supply of either is interrupted, the supply of the other will be
immediately cut off.
(i) Oil level indicating devices and test wells.
(1) All tanks located inside buildings shall be provided with an oil
level indicating device. Test wells shall be prohibited in tanks located
inside of buildings. Unused tank openings shall be permanently sealed to
prevent the removal of plugs or cover.
(2) Oil level indicating devices shall be designed and constructed of
substantial materials so that there can be no leakage of oil or oil
vapor.
(3) Test wells in storage tanks located outside of buildings shall be
capped oil tight and kept closed when not in use.
Section 27-831
§ 27-831 Controls. With each automatic burner a set of safety controls
of the electric, pneumatic, hydraulic, or mechanical type shall be
installed and maintained in good working order. The proper controls for
each burner shall be those that have been tested and accepted in
accordance with the requirements of article five of this subchapter. The
controls shall provide the following functions:
(a) Oil temperature control (no. 5 and no. 6 oil).
(b) Ignition.
(c) Stack or combustion control.
(d) High temperature or pressure control.
Section 27-832
§ 27-832 Chimneys. No oil burner shall be installed in any boiler,
heater, range, or stove unless each boiler, heater, range, or stove is
connected to a chimney complying with subchapter ten of this chapter,
except for portable burners as prescribed in section 27-827 of this
article.