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Building Codes & Standards Flashcards

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  1. Under IMCA M 103 classification, a DP Equipment Class 3 vessel requires that redundant systems be separated by:

    Answer: A-60 fire divisions and watertight boundaries

    Class 3 requires redundant DP systems to be in separate compartments protected by A-60 fire divisions and watertight boundaries to prevent common-cause loss.

  2. Which IMCA document specifically governs the design and testing of DP control systems software?

    Answer: IMCA M 126

    IMCA M 126 provides guidelines on software design assurance, testing, and configuration management for DP control system software.

  3. The 'Annual DP Trials' required by class societies primarily verify:

    Answer: That the FMEA failure scenarios produce results consistent with predictions

    Annual DP trials test the actual system response against FMEA-predicted outcomes to confirm the system still behaves as designed after a year of operation.

  4. According to NORSOK Standard D-002, which parameter is used to define DP capability plots?

    Answer: Maximum environmental force the vessel can resist while maintaining position

    NORSOK D-002 defines DP capability plots as diagrams showing the maximum combined wind, wave, and current forces a vessel can resist at a given heading.

  5. Per the USCG Circular CG-543, US-flagged DP vessels operating on the Outer Continental Shelf must comply with:

    Answer: IMO MSC/Circ.645 and a recognized classification society's DP rules

    The USCG requires US-flagged DP vessels on the OCS to meet IMO MSC/Circ.645 guidance and be classed under an NVIC-recognized classification society's DP rules.

  6. In the context of IMCA DP standards, what does 'TAM' stand for and what does it represent?

    Answer: Technical Advisory Memorandum — an IMCA guidance update on a specific technical issue

    A Technical Advisory Memorandum (TAM) is issued by IMCA to provide urgent technical guidance or corrections to existing DP standards.

  7. The IEC 61508 standard is relevant to DP systems primarily because it governs:

    Answer: Functional safety of electrical/electronic/programmable electronic safety-related systems

    IEC 61508 establishes the functional safety lifecycle requirements for E/E/PE safety systems, including the DP control and safety shutdown systems.