1. (1) Alterations to boilers, with the exception of rerating, shall be performed in accordance with the National Board Inspection Code.
2. (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. (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.

4. (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).
5. (2) ASME Code Symbol Stamp. Altered boilers shall not be restamped with the ASME Code Symbol Stamp.

6. (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.

7. (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.

8. (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:

   1. (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.
   2. (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.
   3. (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.

9. (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 1-½ 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:

10. (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;
11. (2) the addition of new nozzles or openings in a boiler except those classified as repairs;
12. (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;
13. (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
14. (5) a decrease in the minimum temperature such that additional mechanical tests are required as specified in the Code.

(a) Authorization.