A self-propelled mobile offshore drilling unit is required to have its emergency storage batteries tested in accordance with 46 CFR regulations applicable to tests, drills, and inspections for MODU operations. What is the test criteria?
• 46 CFR provisions for MODUs related to tests, drills, and inspections • The required duration of emergency power for storage batteries supplying emergency services • The required frequency of testing emergency storage batteries on mobile offshore drilling units
• Look at how often critical emergency systems on MODUs (like emergency lighting and power) are normally required to be tested under 46 CFR. Is it closer to monthly or every 6 months? • Think about how long emergency batteries are normally required to sustain power in an emergency for offshore units: is it a short verification period or a duration long enough to cover a realistic power loss? • Compare the answer choices: which combination of time between tests and hours under load sounds most consistent with serious offshore emergency preparedness requirements?
• Verify in 46 CFR, MODU emergency power/battery test requirements the exact test interval (monthly vs every 6 months). • Verify the required minimum duration that emergency batteries must be able to power the actual connected emergency loads continuously (2, 6, or 18 hours). • Confirm that the requirement is specifically tied to tests, drills, and inspections for MODU operations, not a general vessel emergency power rule.
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