Short answer: Industrial autoclaves are pressure vessels that perform sterilization, curing, or processing under pressure and temperature. They undergo internal/external inspection, hydrostatic testing, and especially... door interlock safety It is generally inspected at least once a year by the control authorities.

Autoclaves pose a particular risk because they operate under pressure and their lids are frequently opened and closed. A lid opened before the pressure is released, or a faulty locking mechanism, can lead to serious accidents due to a sudden pressure release.

Therefore, in autoclave inspections, door/lock safety systems are evaluated as critically as the integrity of the pressure vessel.

What is checked?

• Shell inspection: corrosion, cracks, and wall thickness (UT)
• Hydrostatic test: pressure resistance and leak tightness.
• Door/lock interlock: prevents opening under pressure.
• Safety valve opening pressure and pressure gauge accuracy.
• Temperature and pressure control/limiting systems
• Gaskets (seals) and steam supply lines

Methodology and Critical Safety Logic

The inspection includes internal/external visual inspection, ultrasonic wall thickness measurement, and hydrostatic testing. The most critical step is the door interlock test: the system must mechanically and/or electrically prevent the door from opening while pressure is present inside the tank. absolutely It must be prevented. Overpressure scenarios are verified by testing the safety valve and pressure limiters.

Legal Basis and Period

Autoclaves, as pressure equipment, are subject to periodic inspection under Law No. 6331 and Annex III; inspections must be carried out by authorized personnel and documented with a report prepared by these authorized personnel.

Common Nonconformities

• An interlock that engages under pressure but doesn't hold completely.
• Thinning of wall thickness due to corrosion.
• Uncalibrated safety valve
• Worn door seal and leaks.

Frequently Asked Questions

What is the most critical point in autoclave inspection?

The door interlock safety mechanism must absolutely prevent the lid from opening under pressure.

Is the hydrostatic test performed every year?

The condition is assessed during the annual inspection; the hydrostatic test period is determined according to the equipment type and regulations.

Which legislation does it govern?

It falls within the scope of Law No. 6331 and Annex III of the Work Equipment Regulation.

Document Your Security

for autoclave and pressure vessel inspection Mechanical Equipment Inspections Check out our service; mandatory periodic inspection Check our guide.