The correct answer is B (False) because CCPS guidance on HAZOP (Hazard and Operability Study) emphasizes that effectiveness depends on having the right participants, not the maximum number of participants .

A HAZOP team should be multidisciplinary , typically including process engineers, operators, maintenance personnel, control/instrumentation specialists, and a trained facilitator. However, adding too many participants can actually reduce effectiveness by making discussions less focused, harder to manage, and more time-consuming.

CCPS highlights that an optimal team size is usually small enough to be manageable (often 5–8 members) while still providing the necessary expertise. Large groups can lead to issues such as reduced participation, difficulty in reaching consensus, and inefficient use of time.

The key principle is quality over quantity —participants should be selected based on their knowledge, experience, and ability to contribute meaningfully to hazard identification and analysis.

Therefore, the statement is false because simply increasing the number of participants does not improve the quality of the HAZOP. A well-structured, properly facilitated team with the right expertise is far more important for an effective hazard analysis.