Periodic Inspection of Compressor Air Tanks
Short answer: Compressor air tanks are vessels that operate under pressure and are subject to periodic inspection under Annex III of the Work Equipment Directive, unless otherwise specified in the relevant standard (e.g., TS EN 286-1 for simple pressure vessels). at least once a year He/She is examined; Test pressure is typically 1.5 times the operating pressure..
A sudden rupture of a compressed air tank creates an explosive effect due to the energy it stores, potentially resulting in serious injury or death. Internal corrosion, loss of wall thickness, or a malfunctioning safety valve can silently transform a seemingly problem-free tank into a deadly risk. Periodic inspections detect these unseen risks before an explosion occurs.
AES Innovation conducts internal/external inspections, hydrostatic pressure tests, and safety equipment checks of compressor air tanks with our qualified engineers.
What is checked during a compressor tank inspection?
- Internal and external inspection: corrosion, cracks, deformation, and wall thickness (ultrasonic measurement if required)
- Hydrostatic (pressure) test: tank's resistance to test pressure and leak tightness
- Safety valve: Opening and emptying capacity at set pressure
- Manometer: accuracy and functionality
- Drainage, condensate drain, and manufacturing plate. information
Why are hydrostatic tests performed with water?
In a hydrostatic test, the tank is heated with water to a test pressure above the operating pressure (usually 1.5 times), and its structural strength and leak tightness are verified. Water is preferred for safety: in the event of a rupture, water does not cause a sudden and violent energy release like air. This test proves that the tank will operate reliably until the next cycle.
Legal Obligation and Period
Pressure vessels are subject to periodic inspection under Law No. 6331 and Annex III. The general period is as stated in the standard, unless otherwise specified. once a yearInspections are carried out more frequently when environmental conditions and usage intensity require it. Inspections must be performed by authorized personnel and documented in a report prepared by these authorized personnel.
Most Common Nonconformities Encountered in the Field
- Loss of wall thickness due to corrosion and accumulated condensate on the inner surface.
- Tanks with test/leakage problems or that have never been tested.
- Safety valve that is faulty, clogged, or has inappropriate capacity.
- Missing/illegible manufacturing plate and pressure gauge malfunction.
Frequently Asked Questions
Is a small compressor tank also subject to inspection?
Most are covered according to pressure and volume thresholds; for accurate assessment, the tank's manufacturing plate and technical specifications are examined.
Why is a safety valve of particular importance?
The safety valve is the final safety barrier protecting the tank from overpressure; its correct setting and opening capacity are vital.
Secure Your Pressure Vessels
for periodic inspection Our Inspection and Periodic Control Services Review it; for the legal framework. mandatory periodic inspection Check our guide.