KEY POINT
Have plans in place for returning to normal operations after an SIP order is lifted.

As stated in the section on “Evacuation,” pre-planning for a return to normal operations is critical. This planning should cover the possibility of an incident requiring SIP (or a lockdown) as well as an evacuation order.
An example of a time-limited health crisis requiring shelter-in-place.
In Miamisburg, OH on July 8, 1986, a CSX rail tank car derailed, releasing liquid phosphorous. About 30,000 people were evacuated from the surrounding area. However, a local hospital near the accident site was unable to evacuate. The hospital staff and patients sheltered in place and were not injured.