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Federal Register / Vol. 86, No. 199 / Tuesday, October 19, 2021 / Proposed Rules 58.5015 Alternate material for construction of independent fuel tanks.

a Materials other than those specifically listed in table 1 to 58.50
5a4 and in table 1 to 58.5010a3
may be used for fuel tank construction only if the tank design meets material and testing requirements approved by the Commandant CGENG. Approved testing may be accomplished by any acceptable laboratory, or may be done by the fabricator if witnessed by a marine inspector.

296. Revise 58.607 to read as follows:
58.607

Industrial systems: Piping.

The piping for industrial systems under this subpart must meet ASME
B31.3 incorporated by reference, see 58.031, except that blow out preventor control systems must also meet API STD 53 incorporated by reference, see 58.031.

59.015

Amended
298. Revise 59.012 to read as follows:

299. Amend 59.015 as follows:
a. In paragraphs a, b, c, and d, remove the word shall wherever it appears and add, in its place, the word must; and b. In paragraph e:
i. Remove the words Boiler and Pressure Vessel Code and add, in their place, the text BPVC; and ii. Remove the text 46 CFR and add, in its place, the symbol .
300. Amend 59.101 by revising paragraphs b, c, and d to read as follows:

59.012

59.101

PART 59REPAIRS TO BOILERS, PRESSURE VESSELS AND
APPURTENANCES
297. The authority citation for part 59
continues to read as follows:

Authority: 46 U.S.C. 3306, 3703; E.O.
12234, 45 FR 58801, 3 CFR, 1980 Comp., p.
227; Department of Homeland Security Delegation No. 0170.1.

jspears on DSK121TN23PROD with PROPOSALS2

New York, NY 100165990, 800843
2763, www.asme.org.
1 ASME Boiler and Pressure Vessel Code, Section I, Rules for Construction of Power Boilers, 2019 Section I of the ASME BPVC; IBR approved for 59.105.
2 ASME Boiler and Pressure Vessel Code, Section VII, Recommended Guidelines for the Care of Power Boilers, 2019 Section VII of the ASME
BPVC; IBR approved for 59.015.
3 ASME Boiler and Pressure Vessel Code, Section VIII, Division 1, Rules for Construction of Pressure Vessels 2019, Section VIII of the ASME BPVC; IBR
approved for 59.105, 59.1010.
4 ASME Boiler and Pressure Vessel Code, Section IX, Welding, Brazing, and Fusing Qualifications 2019, Section IX of the ASME BPVC; IBR approved for 59.105.

Incorporation by reference.

a Certain material is incorporated by reference into this part with the approval of the Director of the Federal Register under 5 U.S.C. 552a and 1
CFR part 51. To enforce any edition other than that specified in this section, the Coast Guard must publish a document in the Federal Register and the material must be available to the public. All approved material is available for inspection at the Coast Guard Headquarters. Contact Commandant CGENG, Attn: Office of Design and Engineering Standards, U.S.
Coast Guard Stop 7509, 2703 Martin Luther King Jr. Avenue SE, Washington, DC 205937509, phone 202 3721375, email typeapproval@uscg.mil, and is available from the sources listed elsewhere in this section. It is also available for inspection at the National Archives and Records Administration NARA. For information on the availability of this material at NARA, email fr.inspection@nara.gov or go to www.archives.gov/federal-register/cfr/
ibr-locations.html.
b American Society of Mechanical Engineers ASME, Two Park Avenue,
VerDate Sep<11>2014

19:25 Oct 18, 2021

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Scope.

b No repairs by welding must be made except temporary emergency repairs without prior approval of the Officer in Charge, Marine Inspection.
Emergency repairs must be replaced with permanent repairs meeting the requirements of this subchapter when the vessel returns to a port in which an Officer in Charge, Marine Inspection, is located.
c Repair welding of power boilers, not meeting the requirements of subpart 52.05 of this subchapter, is prohibited.

d Only welded repairs as specified in this subchapter are permitted on boilers and pressure vessels. The welding repairs allowed by this subpart apply only to boilers and pressure vessels fabricated of carbon steel.
Welding repairs to boilers and pressure vessels fabricated of alloy steel will be given special consideration by the Commandant. Such other method of repairs by means of welding not covered in this subchapter must be referred to the Commandant.
301. Amend 59.105 as follows:

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a. In paragraph d, remove the text plain, circular, or Adamson ring or similar type;
b. In paragraph f, remove the words and is approved by the Commandant;
c. In paragraph g, remove the words if the repair is approved;
d. Revise paragraphs h, i, j, and k; and e. In paragraph l, remove the word shall and add, in its place, the word must.
The revisions read as follows:

59.105

Cracks.

h All cracks permitted to be repaired under this subpart must be excavated to sound metal by grinding, flame or arc gouging or chipping out the defective metal to form a clean welding groove.
Either a V groove or U groove wherein complete penetration of the weld metal is secured may be used. After excavation is completed and prior to welding, the excavated area must be examined by magnetic particle, dye penetrant, or other acceptable test method. When the reverse side of the weld is accessible the root of the weld must be chipped or ground out to insure a clean surface of the originally deposited metal and the resultant groove welded to obtain a sound weld having complete penetration. When the weld cannot be back chipped because the reverse side is inaccessible, a backing strip or other approved means of assuring full penetration must be employed.
i During welding of cracks a preheat must be maintained by controlled temperatures. The degree of preheat must be determined by the rules listed in accordance with the materials Pnumber groupings of PW38, Section I
of the ASME BPVC, appendix R, Section VIII of the ASME BPVC, and Appendix D, Section IX of the ASME BPVC all incorporated by reference; see 59.01
2. For thicknesses exceeding threefourths inch, suitable U grooves should be employed. A welding sequence must be used so as to equalize welding stresses.
j Postweld heat treatment of repaired cracks must be performed in accordance with the rules specified in PW39, Section I of the ASME BPVC and UW
40, Section VIII of the ASME BPVC for boilers and pressure vessels respectively.
k Welded repairs of cracks must be nondestructively tested in accordance with the rules specified in PW40, Section I of the ASME BPVC, and UW
51, Section VIII of the ASME BPVC for
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