Cooperative Personnel Services Firefighter (CPS) Practice Exam 2025 - Free Firefighter Exam Questions and Study Guide

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What would "Less" signify when used as a guide word in a HAZOP study?

An increase in process parameters

A decrease in intended performance

Using "Less" as a guide word in a Hazard and Operability Study (HAZOP) indicates the possibility of a decrease in the intended performance of a system or process. In HAZOP analysis, guide words are employed to explore deviations from the design intent of a system. The term "Less" specifically prompts the examination of scenarios where parameters, such as flow rates, temperatures, pressures, or concentrations, may be lower than what was initially designed or expected.

This decrease could lead to various hazards, including insufficient reaction rates, reduced effectiveness of equipment, or failure to achieve desired outcomes, which may compromise safety or efficiency. Understanding the implications of "Less" helps teams identify and address potential risks that could arise from these deviations, thereby improving overall safety management and operational reliability.

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An unexpected chemical reaction

A mechanical failure

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