Practice Test Geeks(CCST) Certified Control Systems Technician Practice Test
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Safety Standards & Regulatory Compliance in Control Systems Flashcards

7 cards from real CCST practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. Which US federal regulation requires facilities with extremely hazardous substances (EHS) above threshold planning quantities to notify the State Emergency Response Commission (SERC)?

    Answer: EPCRA Section 302 (SARA Title III)

    EPCRA Section 302 (Emergency Planning and Community Right-to-Know Act, part of SARA Title III) requires facilities with EHS above TPQs to notify the SERC and participate in local emergency planning.

  2. In functional safety management, what does the term 'systematic failure' refer to?

    Answer: A failure that is deterministically related to a specific cause such as a design error or incorrect specification

    A systematic failure has a deterministic root cause (design error, specification mistake, procedural error) and will always recur under the same conditions.

  3. A technician is performing functional testing on a SIS final element (emergency isolation valve). Which test result indicates a dangerous undetected (DU) failure?

    Answer: The valve fails to close when a test demand signal is applied

    A dangerous undetected failure is revealed when the final element fails to perform its safety function (fail to close) when a test demand is applied.

  4. According to NFPA 70E, what is the primary purpose of an Energized Electrical Work Permit (EEWP) in an industrial control environment?

    Answer: Document justification and safety measures when deenergizing is not feasible and work must be performed energized

    An EEWP documents that deenergizing is infeasible or creates greater hazard, identifies the hazards, and requires approval for energized work with appropriate PPE and precautions.

  5. Which concept in process safety describes the minimum set of conditions that, if all present simultaneously, could lead to a major accident?

    Answer: Minimum Cut Set

    A minimum cut set in fault tree analysis is the smallest combination of basic events (failures/conditions) that together are sufficient to cause the top event (major accident).

  6. Under ISA-84 (IEC 61511), during which lifecycle phase is the Safety Requirements Specification (SRS) developed?

    Answer: During the hazard and risk assessment phase before SIS design

    The SRS is developed after the hazard and risk assessment (which establishes SIL targets) and before SIS design, capturing all functional and integrity requirements the SIS must meet.

  7. What distinguishes an 'active' safeguard from a 'passive' safeguard in a Layer of Protection Analysis (LOPA)?

    Answer: Active safeguards require energy input or mechanical action to function; passive safeguards provide protection without any action required

    Passive safeguards (dikes, blast walls, check valves) provide protection inherently without action; active safeguards (SIS, relief valves) must detect a condition and take action.