How must operating devices be protected or located to prevent failure due to damage?

• A. They must be painted red.
• B. They must be kept in a locked room.
• C. They must be labeled.
• D. They must be located installed or suitably protected so that they are not subject to mechanical, chemical or other damage that would render them inoperative.

Answer: (D)

Operating devices must be placed or protected in a way that prevents damage that could stop the system from working when it’s needed. The best approach is to locate, install, or provide adequate protection so the devices are not exposed to mechanical, chemical, or other damage that would render them inoperative. Simply painting them red, keeping them in a locked room, or labeling them does not address the risk of damage and may even hinder access or fail to prevent damage. The emphasis is on physical protection and proper placement to maintain operability during a release or routine use.