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Federal Register / Vol. 86, No. 199 / Tuesday, October 19, 2021 / Proposed Rules Externally Threaded Fasteners May 1, 2014 SAE J429; IBR approved for 58.3015.
2 SAE J1928 JUN2018, Devices Providing Backfire Flame Control for Gasoline Engines in Marine Applications, June 1, 2018 SAE
J1928; IBR approved for 58.105.
248. Amend 58.051 as follows:
a. In paragraph a:
i. Remove the word Steel and add, in its place, the word Marine; and ii. Remove the text 46 CFR and add, in its place, the symbol ; and b. Revise paragraph b.
The revision reads as follows:
58.051 Material, design and construction.

b When main and auxiliary machinery is to be installed without classification society review, the builder must submit to the cognizant Officer in Charge, Marine Inspection, such drawings and particulars of the installation as are required by the ABS
Marine Vessel Rules for similar installations on classed vessels.
58.055

Amended
249. Amend 58.055 as follows:
a. In paragraph a, remove the word shall and add, in its place, the word must; and b. Reserve paragraph b.

58.105

Amended
250. Amend 58.105 as follows:
a. In paragraphs a and b1, remove the word shall wherever it appears and add, in its place, the word must;
b. Designate the note following paragraph b1 as note 1 to paragraph b1;
c. In paragraph b3i:
i. Remove the text J1928 wherever it appears and add, in its place, the text J1928;
ii. Remove the text or UL 1111
incorporated by reference; see 46 CFR
58.031; and iii. Remove the text 46 CFR and add, in its place, the symbol ;
d. In paragraph c, remove the word shall wherever it appears and add, in its place, the word must;
e. In the introductory text to paragraph d1:
i. Remove the text part 1, section 23
and add, in its place, the text Chapter 6; and ii. Remove the text 46 CFR and add, in its place, the symbol ;
f. In paragraph d1i, remove the word shall and add, in its place, the word must; and g. Reserve paragraph d2.

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58.1010

Amended
251. In 58.1010a, remove the word shall.
252. Amend 58.1015 as follows:
a. Revise paragraph a; and b. In paragraphs b, c1 through 3, e, the introductory text of paragraphs f1 and 2, paragraph f3, the introductory text of paragraph g, and paragraph h, remove the word shall wherever it appears and add, in its place, the word must.
The revision reads as follows:

58.1015

Gas turbine installations.

a Standards. The design, construction, workmanship and tests of gas turbines and their associated machinery shall be at least equivalent to the standards of the ABS Marine Vessel Rules incorporated by reference, see 58.031.

253. Revise 58.161c to read as follows:
58.161

Scope.

c Except as provided by 58.16
7b, all component parts of the system, except cylinders, appliances, and lowpressure tubing, must be designed to withstand a pressure of 500 pounds per square inch without failure.
254. Revise 58.165 to read as follows:
58.165

Definition.

For the purpose of this subpart the term liquefied petroleum gas means any liquefied flammable gas which is composed predominantly of hydrocarbons or mixtures of hydrocarbons, such as propane, propylene, butane, butylene, or butadiene, and which has a Reid vapor pressure exceeding 40 pounds per square inch absolute at 100 F as determined by ASTM D323
incorporated by reference, see 58.03
1.
255. Revise 58.167b to read as follows:
58.167

Use of liquefied petroleum gas.

tested, listed and labeled by an acceptable laboratory, such as:
i The American Gas Association Testing Laboratories.
ii Underwriters Laboratories, Inc.
2 Continuous-burning pilot flames are prohibited for use on gas appliances when installed below the weather deck.
3 Printed instructions for proper installation, operation, and maintenance of each gas-consuming appliance must be furnished by the manufacturer.
b Cylinders.
1 Cylinders in which liquefied petroleum gas is stored and handled must be constructed, tested, marked, maintained, and retested in accordance with 49 CFR part 178.
2 All liquefied petroleum gas cylinders in service must bear a test date marking indicating that they have been retested in accordance with the regulations of the Department of Transportation.
3 Regardless of the date of the previous test, a cylinder must be rejected for further service when it leaks; when it is weakened appreciably by corrosion, denting, bulging or other evidence of rough usage; when it has lost more than 5 percent of its tare weight; or when it has been involved in a fire.
c Safety-relief devices. All required safety-relief devices must be accepted as to type, size, pressure setting, and location by the Commandant CGENG
as being in accordance with 49 CFR part 178.
d Valves, regulators, and vaporizers.
All component parts of the system, other than cylinders and low-pressure distribution tubing between regulators and appliances, must be tested and approved by and bear the label of the Underwriters Laboratories, Inc., or other recognized testing laboratory.
e Plan approval. Drawings in triplicate, showing the location and installation of all piping, gas-consuming appliances, cylinders, and other component parts of the system must be submitted for approval.

b Cooking equipment using liquefied petroleum gas on vessels of less than 100 gross tons that carry passengers for hire must meet the requirements of 46
CFR 25.452 or 46 CFR part 184, as applicable.

256. Revise 58.1610 to read as follows:

58.1615

58.1610

58.1616

Approvals.

a Gas appliances.
1 All gas-consuming appliances used for cooking and heating must be
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Amended
257. In 58.1615, remove the word shall wherever it appears and add, in its place, the word must.
258. Amend 58.1616 as follows:
a. In paragraph a, remove the word shall and add, in its place, the word must; and b. Revise paragraphs b and c.
The revision reads as follows:

Reducing regulators.

b The low-pressure side of all regulators must be protected against
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