(a)
Authorization.
(1) Alterations to boilers,
with the exception of rerating, shall be performed in accordance with the
National Board Inspection Code.
(2)
An organization holding only a National Board or New York State Repair
Certificate of Authorization may do alterations provided the design changes
involved are certified by the holder of an appropriate ASME Code Symbol Stamp
and Certificate of Authorization and such changes are verified by the ASME Code
Stamp holder's authorized inspector.
(3) Except as provided in paragraph (a)(2) of
this section, alterations to boilers shall be performed by an organization that
holds an ASME Code Symbol Stamp listed in the same section of the ASME Code as
the code symbol on the boiler to be altered. The work involved in the
alteration must be within the scope of the ASME Code Symbol Stamp holder's
Certificate of Authorization.
(b) Stamping or nameplate attachment to
altered boilers.
(1) Authorization. The
stamping of, or attaching of a nameplate to, an altered (including rerated)
boiler in accordance with the National Board Inspection Code shall indicate
that the alteration was carried out in compliance with the requirements of this
Code. Such stamping or attaching of a nameplate shall be done only with the
knowledge and authorization of the inspector. The organization responsible for
completing the Report of Alteration, shall also be responsible for marking by
means of a nameplate or stamping on the boiler as shown and in a location
indicated in Figure 14-3(a).
(2)
ASME Code Symbol Stamp. Altered boilers shall not be restamped with the ASME
Code Symbol Stamp.
(3) Removal of
original stamping or nameplate. When an alteration requires removal of that
part of a boiler containing the ASME Code stamping, the authorized inspector
shall, subject to the approval of the jurisdiction, witness the making of a
facsimile of stamping, the obliteration of the old stamping and the transfer of
the stamping to the new part. When the stamping is on a nameplate the inspector
is to witness the transfer of the nameplate to the new part. Any relocation
shall be described on the Report of Alteration. The Code Symbol is not to be
restamped.
(c)
Documentation of alterations.
(1) The Welded
Repair/Alteration Report is a dual purpose form that shall be used for
documenting either repairs or alterations, unless otherwise specified in this
Code or by the National Board Inspection Code. For purposes of this Code, when
such form is used to document alterations, it is referred to as the Report of
Alteration.
(2) Preparation of the
report of alteration. The Report of Alteration, indicating the changes that
have been made, shall be prepared and distributed in accordance with section
14-3.20(c) of
this Subpart for each alteration of a boiler as described below:
(i) Where the alteration involves rerating
with no physical change in the boiler, the Report of Alteration shall be
prepared by the original manufacturer or the holder of a valid ASME Certificate
of Authorization described in the National Board Inspection Code. The
manufacturer's authorized inspector shall indicate acceptance of the design
change on the Report of Alteration. Where such preparation cannot be obtained
from this source, the Report of Alteration shall be prepared by a registered
professional engineer with verification by the authorized inspection agency
responsible for the inservice inspection of the object. In each instance
revised calculations shall accompany the Report of Alteration, and all such
documentation shall be subject to the acceptance by the jurisdiction.
(ii) Where the alteration involves a rerating
where a physical change has been made to the boiler, the documentation in
subdivision (a) of this section shall be accompanied by a Report of Alteration,
prepared by the holder of the ASME Certificate of Authorization who performed
the alteration and shall be verified by his inspector.
(iii) Where an alteration is made without
rerating the boiler, the Report of Alteration shall be prepared by the holder
of the ASME Certificate of Authorization who performed the alteration and shall
be verified by his inspector.
(3) A copy of the original manufacturer's
data report and any required manufacturer's partial data reports shall be a
part of the completed report of alteration and shall be attached thereto. Where
the manufacturer's data report is unavailable, documentation acceptable to the
department shall be submitted.
(d) Test. A pressure test as required for new
construction shall be applied to the boiler after the alteration has been
completed, at a pressure of at least the set pressure of the lowest set safety
or safety relief valve on the altered object, but not to exceed 150 percent of
the maximum allowable working pressure, except that the authorized inspector
may accept an alternate test.
Note: Where water is used in a hydrostatic test, the
temperature of the water should be not less than the ambient temperature and in
no case less than 70° Fahrenheit and the maximum temperature during
inspection should not exceed 120° Fahrenheit. If a test is conducted at
1-1/2 times the maximum allowable working pressure (MAWP) and the owner
specified a temperature higher than 120° Fahrenheit, the pressure should be
reduced to the MAWP and the temperature should be reduced to 120°
Fahrenheit for the close examination.
(e) Examples of alterations. Alterations
shall include, but are not limited to, the following examples:
(1) to increase the maximum allowable working
pressure or temperature of a boiler regardless of whether or not a physical
change was made to the boiler;
(2)
the addition of new nozzles or openings in a boiler except those classified as
repairs;
(3) an increase in any
heating surface which results in increasing the heat output or the final
temperature above that specified in the original design;
(4) replacement of a pressure retaining part
in a boiler with a material of different nominal strength or nominal
composition from that used in the original design; and
(5) a decrease in the minimum temperature
such that additional mechanical tests are required as specified in the
Code.