1. space prohibits outsiders from entering the scene, along with notification of security guards. Space traffic, and closed the door Rails for drainage (if a flammable chemical substances do not cause sparks)
1. Do not block third party entered the scene. And inform the security guards. Blocking traffic areas. And closed drainage trough (In case of volatile chemicals banned sparking).
1. No outsiders into the space fence around the scene, and inform the security barrier and traffic areas and close the conduit. (if a flammable chemicals do not cause sparks).