Aspects of Improvement in Exploitation Process of Passenger Means of Transport

Table 6

First FMEA analysis for individual systems.

Specificity defects	Effect	Cause	S	O	D	RPN	Corrective Action
Bodywork
Corrosion of bus body	Dissatisfaction users; Weakness of supporting structure of the bus	Wrong storage and maintenance of the vehicle	4	5	9	324	Improve the method maintenance and storage; Make additional corrosion protection, in particular closed profiles
Engine with attachments
Inefficient work of the air conditioning system	Too high temperature and air humidity in the bus, preventing comfortable traveling	Damaged compressor; Leaks in the air conditioning system; Insufficient amount of refrigerant	7	9	7	441	Regular servicing; Don't turn on the air conditioning system while the windows open; Replace the refrigerant every 1 year
Electrical systems
Problems with starting the engine	Delays in commuting bus trips	Failed starter; Uncharged battery; Short circuit in electrical system; Too thick engine oil during start-up	8	9	6	432	Replacement of damaged starter components; Rechargeable batteries during stoppages; The use of seasonal engine oils
Braking systems
Inefficient braking	The bus driver is not able to brake hard enough in an emergency situation	Aerated braking system; Badly fitted brake pads or discs	10	9	9	810	Frequent venting of the system and control condition of the brake fluid; Additional training and disciplining their mechanics