Autoclave Inspection

Autoclaves are devices used for sterilization under high temperature or for processing materials such as rubber, glass, and similar products. Since they operate under pressure, they are classified as pressure vessels and must be handled with appropriate safety measures. They may range from small capacities such as 10–15 liters to very large industrial volumes. Technologically, an autoclave can be as simple as a sealed chamber or as advanced as a computer-controlled system with multiple operational functions.

Some autoclave types generate steam internally using electric heating elements, while others receive steam from an external source through pipelines.

Autoclaves pose risks associated with steam, pressure, and electricity. They are equipped with measurement instruments such as pressure gauges, thermometers, and timers; control devices such as pressure switches and thermostats; and safety components such as safety valves.

Periodic inspections of autoclaves are carried out under the group “Pressure Vessels and Installations” defined in Annex III of the Regulation on Health and Safety Requirements for the Use of Work Equipment. A periodic inspection must be performed at least once per year. Authorized personnel for conducting autoclave inspections include mechanical engineers, mechanical technicians, and senior technicians.

During the periodic inspection, the following evaluations are conducted:

• Equipment placement and installation
• Compliance of electrical connections
• Equipment condition (corrosion, deformation, weld seams, etc.)
• Lid/door integrity and locking mechanism
• Operation of measurement and control devices

For testing, a hydrostatic pressure test is performed at 1.5 times the maximum operating pressure. Additionally, the safety valve is checked to ensure it operates without allowing the system pressure to exceed more than 10% above normal operating pressure.