Kan. Admin. Regs. § 49-50-1 - Major repair to boilers and pressure vessels
(a) Boiler and
pressure vessel repairs or alterations shall be made so that each boiler or
pressure vessel conforms to original specifications. Any repairs or alterations
not covered by this regulation shall be subject to the requirements for new
construction.
(b) Welding.
(1) Repairs or alterations by fusion welding
shall be approved by an authorized inspector before beginning the work. All
welding repairs or alterations shall be made in accordance with the appropriate
section of "repairs and alterations to boilers and pressure vessels by
welding," part RC, of the national board inspection code.
(2) All welding shall be done by either of
the following:
(A) An organization holding
the applicable ASME certificate of authorization or the national board "R" or
"NR" stamp; or
(B) an owner or
user who has demonstrated to the satisfaction of the chief state boiler
inspector all of the following:
(i) The owner
or user maintains an acceptable quality control system.
(ii) Welding work completed by the owner or
user is in compliance with ASME standards for welding.
(iii) Before the welding operations, the
owner or user has assured that all welders are qualified by compliance with
ASME standards.
(iv) The owner or
user has notified the applicable insurance company boiler inspector or state
boiler inspector before doing any welding.
The organization performing the repair shall be responsible for filing the national board's repair or alteration form with the office of the chief state boiler inspector.
(c) Each welder or welding
operator shall qualify for each welding process used in the repair or
alteration of a boiler or pressure vessel. The qualifications for welders shall
be those established in section IX of the ASME code, and by a qualified welding
procedure specification of the organization making the repair or alteration.
(d) Each organization making
repairs or alterations under this regulation shall list the parameters
applicable to welding that are to be performed in the welding procedure
specification (WPS) documents. The documents shall have been qualified by the
organization as required by the applicable section of the ASME code. The
organization shall qualify its WPS by the welding of test coupons, the testing
of specimens, and recording the welding data and test results in its procedure
qualification record (PQR) document.
(e)
(1) The
organization making the repair or alteration shall adopt specific procedures
for performing welding operations in the shop or the field. The procedure
specification shall comply with the requirements of section IX of the ASME code
and the national board inspection code.
(2) The procedure specifications shall be
written and shall provide all pertinent details about the methods and procedure
to be used, including the following:
(A) The
type of electrode or rod to be used;
(B) the shape of the welding groove;
(C) the number and sequence of the
beads;
(D) the manner in which
slag is to be cleaned;
(E) peening
and current characteristics, if electric welding; and
(F) if gas welding, the size of the tip, the
nature of the flame, and the designation of forehand or backhand technique
used.
(3) The procedure
specification shall ensure that weld metal and welded joints comply with the
characteristics required by section IX of the ASME code and the national board
inspection code.
(4) A test
demonstrating the sufficiency of the procedure specification shall be witnessed
by the inspector, or authentic evidence documenting the sufficiency of the
specifications shall be provided to the inspector.
(f) The material used for patches shall be of
the same general quality, shall have, at least, the minimum physical properties
of the plate to be patched and shall be traceable. The thickness of any patch
shall be at least equal to, but not more than, 1/8 inch greater than the plate
being patched. Flush or butt-welded patches in unstayed shells, drums, or
headers shall be radiographed and stress-relieved to conform to the
requirements of the national board inspection code, part RC, 1998 edition.
Notes
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