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ASME BPVC
The American Society of Mechanical
Engineers Boiler and Pressure Vessel Code.
When boilers and pressure vessels are
built, the customer almost always requires them
to be built to "the Code". This is the
code that is meant.
The
following are the Sections of the Code and a
brief overview:
Section I. Power Boilers
This Section provides requirements for all
methods of construction of power, electric, and
miniature boilers; high temperature water
boilers used in stationary service; and power
boilers used in locomotive, portable, and
traction service.
Rules pertaining to use of the V, A, M, PP, S
and E Code symbol stamps are also included. The
rules are applicable to boilers in which steam
or other vapor is generated at a pressures
exceeding 15 psig, and high temperature water
boilers intended for operation at pressures
exceeding 160 psig and/or temperatures exceeding
250° F.
Superheaters, economizers, and other pressure
parts connected directly to the boiler without
intervening valves are considered as part of the
scope of Section I.
Section
II. Materials
Part A-Ferrous Material
Specifications
Part B-NonFerrous Material
Specifications
Part C-Specifications for Welding
Rods, Electrodes, and Filler Metals
Part D-Properties (Customary)
Part D-Properties (Metric)
Part A
This Part is a service book to the other Code
Sections, providing material specifications for
ferrous materials adequate for safety in
the field of pressure equipment.
These specifications contain requirements and
mechanical properties, test specimens, and
methods of testing. They are designated by SA
numbers and are derived from ASTM "A"
specifications.
Material
examples are SA 105, carbon steel flanges,
or SA 516-70, Low carbon steel plate.
Part B
This Part is a service book to the other Code
Sections providing material specifications for
nonferrous materials adequate for safety in the
field of pressure equipment.
These specifications contain requirements for
heat treatment, manufacture, chemical
composition, heat and product analyses,
mechanical test requirements and mechanical
properties, test specimens, and methods of
testing.
They are designated by SB numbers and are
derived from ASTM "B" specifications.
Part C
This is a service book to the other Code
Sections providing material specifications for
the manufacture, acceptability, chemical
composition, mechanical usability, surfacing,
testing requirements and procedures, operating
characteristics, and intended uses for welding
rods, electrodes and filler metals.
These specifications are designated by SFA
numbers and are derived from AWS specifications.
Part D
This is a service book to the other Code
Sections providing material specifications for
the manufacture, acceptability, chemical
composition, mechanical usability, surfacing,
testing requirements and procedures, operating
characteristics, and intended uses for welding
rods, electrodes and filler metals.
This is the same as Part C, but is in metric
measurements.
Section III. Rules for Construction of Nuclear Facility
Components
Section
IV. Heating Boilers
This Subsection provides requirements for
design, fabrication, installation and inspection
of steam generating boilers, and hot water
boilers intended for low pressure service that
are directly fired by oil, gas, electricity, or
coal.
It contains appendices which cover approval of
new material, methods of checking safety valve
and safety relief valve capacity, examples of
methods of checking safety valve and safety
relief valve capacity, examples of methods of
calculation and computation, definitions
relating to boiler design and welding, and
quality control systems.
Rules pertaining to use of the H, HV, and HLW
Code symbol stamps are also included.
Section
V. Nondestructive Examination
This Section contains requirements and methods
for nondestructive examination which are
referenced and required by other code Sections.
It also includes manufacturer's examination
responsibilities, duties of authorized
inspectors and requirements for qualification of
personnel, inspection and examination.
Examination methods are intended to detect
surface and internal discontinuities in
materials, welds, and fabricated parts and
components. A glossary of related terms is
included.
Section
VI. Recommended Rules for the Care and Operation
of Heating Boilers
Section
VII. Recommended Guidelines for the Care of
Power Boilers
VIII.
Construction of Unfired Pressure Vessels, DIVISION 1
This Division of Section VIII provides
requirements applicable to the design,
fabrication, inspection, testing, and
certification of pressure vessels operating at
either internal or external pressures exceeding
15 psig.
Such pressure vessels may be fired or unfired.
Specific requirements apply to several classes
of material used in pressure vessel
construction, and also to fabrication methods
such as welding, forging and brazing.
It contains mandatory and nonmandatory
appendices detailing supplementary design
criteria, nondestructive examination and
inspection acceptance standards. Rules
pertaining to the use of the U, UM and UV Code
symbol stamps are also included.
This Section also includes a Division 2 and
Division 3. These divisions are for
alternate rules regarding engineering,
calculations, and materials.
IX. Welding and Brazing Qualifications
This Section contains rules relating to the
qualification of welding and brazing procedures
as required by other Code Sections for component
manufacture.
It also covers rules relating to the
qualification and requalification of welders,
brazers, and welding and brazing operators in
order that they may perform welding or brazing
as required by other Code Sections in the
manufacture of components.
Welding and brazing data cover essential and
nonessential variables specific to the welding
or brazing process used.
X. Fiber-Reinforced Plastic Pressure Vessels
XI. Rules for Inservice Inspection of Nuclear
Power Plant Components
XII. Rules for Construction and Continued
Service of Transport Tanks
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