Current through Register Vol. 48, No. 38, September 20, 2024
The following exemptions to requirements in this Part shall
be permitted, except as defined in this Section or as otherwise provided in
this Part. The exemptions provided in subsections (a)(1), (2), (3) and (4)
shall not be permitted for ISI boilers and pressure vessels.
a) Except as provided in Section
505.70,
the following boilers and pressure vessels shall be exempt from the
requirements of this Part:
1) Those classes
of pressure vessels not within the scope of ASME Code Section VIII, Division I
as defined in the introduction under paragraph U-1.
2) Boilers and pressure vessels which have
either a Limiting Condition for Operation (LCO) or a surveillance requirement
in the plant's technical specifications.
3) Pressure vessels that do not exceed:
A) A volume of 15 cubic feet and 250 psig
when not located in a place of public assembly; or
B) A volume of 5 cubic feet and 250 psig when
located in a place of public assembly; or
C) A volume of 11/2 cubic feet and 600
psig.
4) Water
conditioning equipment used for removing minerals, chemicals, or organic or
inorganic particulate from water by means other than application of heat, e.g.,
water softeners, water filters, dealkalizers and demineralizers, provided the
following conditions are met:
A) The
temperature of such vessels is maintained below 212° F;
B) No heat is applied to the water after
being placed into such vessels; and
C) No heat is applied either directly or
indirectly to such vessels.
5) Hot water supply boilers that are directly
fired with oil, gas or electricity, provided none of the following limitations
are exceeded:
A) Heat input of 200,000
BTU/hr.; or
B) Water temperature of
200° F; or
C) Nominal water
containing capacity of 120 gallons.
6) Coil type hot water boilers in which the
water can flash into steam when released directly to the atmosphere through a
manually operated nozzle, provided the following conditions are met:
A) There is no drum, headers or other steam
spaces;
B) No steam is generated
within the coil;
C) Outside
diameter of tubing does not exceed 1 inch;
D) Pipe size does not exceed 3/4
inch;
E) Water capacity of the unit
does not exceed 6 U. S. gallons; and
F) Water temperature does not exceed 350°
F.
7) ISI pressure
vessels that have a surveillance requirement in the plant technical
specifications or are continuously monitored or are routinely subjected to
examinations and tests (e.g., visual examinations and pressure tests), other
than those required in this Part but that are determined by the Agency to give
an assurance of structural integrity at least equal to that provided by the
examinations and test required by this Part.
8) Other boilers and pressure vessels listed
under Section 5(a) of the Act.
b) Boilers and pressure vessels listed under
Section 5(b) of the Act shall be subject to the requirements of this Part
(e.g., design, construction and registration), except for those requirements
pertaining to inspection, Inspection Certificates and penalties for operating
without a valid Inspection Certificate.
