Seek first aid and then medical attention immediately. Head - Safety Helmet. Do not use metal ladders whilst working with electricity. Check extension leads for any damage. If damaged give to technical officer.
Check lanterns to see if they have been tag tested, and whether the test is current.
Check lanterns for any damage and report to supervisor if found. Check to see if appliance is working prior to installing. Do not use double adaptors. You must check with technical staff prior to installation. When using extension leads, do not use male to male or female to female extension leads.