Industry Regulations & Compliance Flashcards

Under IEC 62061 (functional safety for machinery), a Safety Instrumented System that is continuously demanded would be characterized as operating in:

Answer: High demand or continuous mode

IEC 62061 and IEC 61508 define high demand or continuous mode as when demands on a safety function occur more frequently than once per year or continuously.

The EPA's Accidental Release Prevention program (40 CFR Part 68) classifies regulated substances into Program 1, 2, or 3 based on:

Answer: Proximity to public receptors and accident history

EPA RMP Program levels are determined by the facility's accident history, proximity to public receptors, and whether the process is subject to OSHA PSM or other regulatory requirements.

In the ISA-62443 industrial cybersecurity framework, a 'Conduit' is defined as:

Answer: A logical grouping of communication channels sharing security requirements

ISA-62443 defines a conduit as a logical grouping of communication channels (links) that share common security properties between zones.

Which standard provides guidance on cybersecurity for industrial automation and control systems and is published as a series by ISA and adopted by IEC?

Answer: ISA-62443

ISA-62443 (originally developed as ISA-99) is the comprehensive series of standards for industrial automation and control system cybersecurity, also adopted as IEC 62443.

When a Safety Instrumented System undergoes a major modification, IEC 61511 requires the modification to be managed through:

Answer: The full safety lifecycle or relevant portions thereof

IEC 61511 requires that modifications to SIS be managed through the full safety lifecycle or the relevant portions, ensuring all impacts are assessed and documented.

Under OSHA PSM, the 'mechanical integrity' element requires that employers establish written procedures to maintain the ongoing integrity of process equipment. This applies to which categories of equipment?

Answer: Pressure vessels, piping, relief devices, controls, and pumps handling HHCs

OSHA PSM mechanical integrity covers pressure vessels, storage tanks, piping systems, relief devices, emergency shutdown systems, controls, and pumps used in covered processes.

A 'proof test' in the context of IEC 61511 is performed to:

Answer: Detect dangerous undetected failures to restore the SIF to its design SIL

A proof test exercises the entire SIF to reveal dangerous undetected failures that online diagnostics cannot find, restoring the function to its intended probability of failure on demand.