Transform Active constructions into Passive ones

Transform Active constructions into Passive ones
Ex.: Senior officers carry out the ship's safety program. – The ship’s safety program is carried out by senior officers.
1. All crewmembers must report to their department heads any hazardous conditions discovered.
2. They wear proper personal protective equipment and adequate clothing.
3. They must rope off open manholes, gratings.
4. The rules prohibit the use of gasoline, benzine or other volatile liquids for cleaning clothing, paint brushes, or other equipment.
5. We shall undertake hot work with special permission.
6. The chief officer personally have made the necessary tests.
7. The instructor trained the crewmembers in the use of the fresh air breathing apparatus.
8. Refusal to observe safe working practices will subject the offender to immediate dismissal.
9. They have removed all burners.
10. The electrical engineer opened all switches and tagged them with a warning sign.