Exam frequency
70%
Difficulty
2/5
Drill questions
50
Source excerpts
46 CFR §56.01-2
§ 56.01-2 -2 Incorporation by reference. Certain material is incorporated by reference into this part with the approval of the Director of the Federal Register under 5 U.S.C. 552(a) and 1 CFR part 51. To enforce any edition other than that specified in this section, the Coast Guard must publish a document in theand the material must be available to the public. All approved incorporation by reference (IBR) material is available for inspection at the U.S. Coast Guard and the National Archives and Records Administration (NARA). Contact U.S. Coast Guard Headquarters at: Commandant (CG-ENG), Attn: Office of Design and Engineering Standards, U.S. Coast Guard Stop 7509, 2703 Martin Luther King Jr. Avenue SE, Washington, DC 20593-7509; phone (202) 372-1375; email. For information on the availabil…
46 CFR §58.01-20
§ 58.01-20 -20 Machinery guards. Gears, couplings, flywheels, and all rotating machinery capable of injuring personnel must be provided with adequate covers or guards. [USCG-2020-0634, 89 FR 50172, June 12, 2024]
46 CFR §58.03-1
§ 58.03-1 -1 Incorporation by reference. Certain material is incorporated by reference into this part with the approval of the Director of the Federal Register under 5 U.S.C. 552(a) and 1 CFR part 51. To enforce any edition other than that specified in this section, the Coast Guard must publish a document in theand the material must be available to the public. All approved incorporation by reference (IBR) material is available for inspection at the U.S. Coast Guard and the National Archives and Records Administration (NARA). Contact U.S. Coast Guard Headquarters at: Commandant (CG-ENG), Attn: Office of Design and Engineering Standards, U.S. Coast Guard Stop 7509, 2703 Martin Luther King Jr. Avenue SE, Washington, DC 20593-7509; phone (202) 372-1375; email. For information on the availabil…
46 CFR §58.30-15
§ 58.30-15 -15 Pipe, tubing, valves, fittings, pumps, and motors. (a) The requirements of this section are applicable to those hydraulic and pneumatic systems listed in § 58.30-1. (b) Materials used in the manufacture of tubing, pipes, valves, flanges, and fittings must be selected from those specifications that appear in table 1 to § 56.60-1 or table 1 to § 56.60-2; or they may be selected from the material specifications of Section I or Section VIII of the ASME BPVC (both incorporated by reference; see § 58.03-1). Materials designated by other specifications must be evaluated on the basis of physical and chemical properties. To assure these properties, the specifications must specify and require such physical and chemical testing as considered necessary by the Commandant. All tubing an…
46 CFR §61.20-23
§ 61.20-23 -23 Tailshaft clearance; bearing weardown. (a) Water lubricated bearings, other than rubber, must be rebushed as follows: (1) Where the propelling machinery is located amidship, the after stern tube bearing must be rebushed when it is worn down to 6.4 mm (0.25 in) clearance for shafts of 229 mm (9 in) or less in diameter, 7.95 mm (0.3125 in) clearance for shafts exceeding 229 mm (9 in) but not exceeding 305 mm (12 in) in diameter, and 9.53 mm (0.375 in) clearance for shafts exceeding 305 mm (12 in) in diameter. (2) Where the propelling machinery is located aft, the after stern tube bearing must be rebushed when weardown is 1.6 mm (.0625 in) less than the applicable clearance for propelling machinery located amidship. (b) Water lubricated rubber bearings must be rebushed when…
DOE-HDBK-1011 Vol.4 §14-1
DOE-HDBK-1011 Vol.4 §14-1 — Test instruments for distribution maintenance Maintaining a distribution system depends on correct use of test instruments. The multimeter (analog VOM or digital DMM) measures voltage (connected in parallel across the points, high input resistance to avoid loading), current (connected in series, or via a clamp/CT for large currents, low insertion resistance), and resistance (on de-energized, isolated circuits only, using the meter's own source). The wattmeter reads true power directly by combining a current coil and a voltage coil, so it accounts for power factor, and on switchboards it is fed through CTs and PTs. The megohmmeter (megger) applies a high DC test voltage (commonly 500-1000 V) to read insulation resistance in megohms, the primary test for motor, g…
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Under 46 CFR, when must a water-lubricated rubber stern tube bearing be rebushed?
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