What is required for plugs that are 10 inches or larger?

Plugs that are 10 inches or larger must be shored in. This requirement is in place to ensure safety and stability during maintenance or operational procedures. Shoring provides structural support and prevents the plug from becoming dislodged or failing under pressure, which could lead to hazardous situations. By using proper shoring techniques, the risk of accidents is significantly reduced, protecting both the workers involved and the surrounding environment.

While other options might address different aspects of safety or maintenance, the need for shoring specifically pertains to the physical integrity and secure handling of larger plugs, making it a critical requirement in managing such equipment safely.