SME
Process Design · Problem type

HAZOP guide word for a deviation

Use this for “A control valve sticks open and too much feed reaches the reactor. Which HAZOP guide word is that?”

Sort

Which guide word names this deviation?
Tap a card, then tap its group.
No, More and Less change how much; Reverse turns the direction; Other than swaps what is there for something else.

Assumptions

•
HAZOP (hazard and operability study): a team pairs guide words with flow, temperature or pressure at each node.
•
A deviation is the guide word applied to what the design intends; sort each one by its guide word.
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