CCST Safety Standards & Regulatory Compliance in Control Systems 5

Question 1

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

Accepted Answer

EPCRA Section 302 (SARA Title III)

Answer

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.

Question 2

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

Accepted Answer

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

Answer

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

Question 3

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

Accepted Answer

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

Answer

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.

Question 4

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

Accepted Answer

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

Answer

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.

Question 5

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

Accepted Answer

Minimum Cut Set

Answer

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).

(CCST) Certified Control Systems Technician Practice Test

(CCST) Certified Control Systems Technician Practice Test

CCST Safety Standards & Regulatory Compliance in Control Systems 5