help with my translation please
I translated five sentence tonight. Please help me the check whether they are all right.
Monitoring system malfunction results in data loss.
Purchase mobile hard disk immediately, and the security chief should back-up the monitoring data everyday.In addition, the data should be retained for at least 30 days.
Security training is not sufficient.
Conduct training and assessment for security immediately. The personnel to enter the factory must wear a visitor badge
Safety officer conducts unscheduled inspections
Thank you so much.