Section 27-413
§ 27-413 Application. This section shall apply to the construction,
alteration, and use of buildings or spaces for radioactive materials and
radiation-producing equipment.
Section 27-414
§ 27-414 City, state and federal regulations. In addition to the
requirements of this section, occupancies involving radioactive
materials and radiation-producing equipment shall also comply with
applicable requirements of the city health code, relating to
radiological hazards, of part thirty-eight of the state industrial code
relating to radiation protection, and of title ten of the code of
federal regulations relating to atomic energy.
Section 27-415
§ 27-415 Laboratories. All laboratories required to register under the
requirements of the New York city health code shall comply with the
following:
(a) Construction. All buildings in which such laboratories occur shall
be of noncombustible group I construction.
(b) Floors. All floors shall comply with the fire-resistance
requirements for the class of construction, and provide the degree of
radioactive resistance required by applicable city, state, and federal
regulations. A finished material shall be applied to provide a
continuous nonporous surface which may be readily removed.
(c) Interior finish. All insulation of acoustical treatments and
interior partitions shall be of noncombustible material. Walls and
ceilings shall have nonporous finishes of class A rating.
(d) Sprinkler protection. Automatic sprinkler protection complying
with the construction provisions of subchapter seventeen of this chapter
shall be provided, and such protection shall be designed for the type of
combustible materials wherever such material is used, and for the
radioactive material that may be expected to melt, vaporize, or oxidize
under fire conditions. Laboratory equipment susceptible to damage from
water or other materials used in the sprinkler system may be shielded by
hoods except when the equipment provides a source of combustion. Where
sprinkler protection uses water, or small water-spray installations are
used to fight small isolated fires, floors shall be provided with
drainage so that water may be carried to retention tanks for later
disposal as required by the New York city health code when contamination
of the water is to be anticipated.
(e) Electrical controls. Electrical controls and equipment shall be
installed in accordance with the requirements of the electrical code of
the city of New York.
(f) Ventilation. Exhaust air from areas in which radioactive materials
are used or stored shall be exhausted to the outdoors in such manner as
not to create a health hazard, and shall not be recirculated to other
areas of the building. Air pressure in rooms in which radioactive
materials are used or stored shall be maintained below the the air
pressure of adjoining rooms, so that there is no flow of radioactive
gases or dusts into adjoining rooms.
(1) Ducts shall be of sheet steel of not less than No. 16
manufacturers' standard gauge or of other equivalent noncombustible
material having a melting point above eighteen hundred degrees
Fahrenheit. Exhaust ducts within the building, on the discharge side of
the fan, shall be welded airtight. Exhaust ducts within the building, on
the suction side of the fan shall have laps in the direction of air flow
with smoke-tight joints, and shall be subjected to a smoke test in
accordance with the requirements for chimneys in subchapter fifteen of
this chapter. Access hatches with tight-closing covers shall be provided
for cleaning and for fire-fighting in the exhaust system ducts.
(2) Fume hoods shall be exhausted to the outdoors. Controls for hood
fans shall be interlocked so that contaminated air cannot be drawn into
any space from a hood where the exhaust fan is not in operation.
(3) Fan equipment other than the impeller and impeller housing shall
be located outside the exhaust stream.
(4) When the degree of contamination of the exhaust stream exceeds the
concentration limits permitted by the health code, the duct system shall
be equipped with devices to decontaminate the air to a safe level before
discharging to the outdoor air.
(g) Plumbing. Drainage lines from sinks used for radioactive wastes
shall be without traps, and shall lead to retention tanks when required
by the provisions of the New York city health code.
Section 27-416
§ 27-416 Radiation machines. Radiation machines or particle
accelerators, linear accelerators, cyclotrons, synchrotons, betatrons,
or bevatrons shall be located only in buildings of noncombustible group
I construction; however, this requirement shall not apply to
conventional medical, dental, research, or industrial x-ray machines of
less than one million volt capacity.
Section 27-417
§ 27-417 Storage. Radioactive materials shall be stored in sealed
containers. When required by the commissioner to avoid too concentrated
an exposure within any one space, radioactive materials shall be stored
in vaults designed in accordance with the radiation shielding or other
requirements for the materials to be stored. When any materials are
subject to melting, vaporization, or oxidation under fire conditions,
the storage vaults shall be constructed of walls having a
fire-resistance rating of at least four hours, and the vaults shall be
equipped with automatic sprinklers complying with the construction
requirements of subchapter seventeen of this chapter and shall be vented
through devices to decontaminate the air to a safe level. Doors opening
into storage vaults shall meet shielding requirements and have a
fire-protection rating of not less than three hours. All bins, shelving,
partitions, and pallets in storage vaults shall be of noncombustible
materials. Other methods of storage permitted by the health department
or the atomic energy commission, such as storage under water, may be
used.
To the extent possible under law, Friends of Devin Balkind for Public Advocate has waived all copyright and related or neighboring rights to New York City Administrative Code. This work is published from: United States.
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