Where are safety chains required to be installed?

Safety chains are specifically required to be installed at locations that pose potential hazards or where there is a risk of falling or unintended access. This includes elevator openings, walkways, deck edges, and hatches. Each of these areas can present dangers that necessitate barriers to enhance safety and prevent accidents.

For instance, at elevator openings, chains can prevent individuals from accidentally stepping into an unguarded elevator shaft. On walkways and deck edges, safety chains serve as a physical reminder and barrier to discourage individuals from getting too close to the edge, thereby reducing the risk of falls. Similarly, hatches can be particularly hazardous if left unguarded; safety chains help signal that caution should be exercised in those zones.

The other options do not accurately reflect the primary purpose and typical installation requirements for safety chains in ensuring safety in environments where fall hazards exist.