Case 1: Arntz exposes a design error and prevents further mishap.

Two explosions…

A turbocharger explodes, a chief engineer is badly injured. Labour inspection concludes that most likely a volatile liquid used by the engineer was sucked into the turbocharger air inlet, causing the explosion.
Two months later, an identical turbocharger explodes, this time without anyone present in the engine room.

Arntz is called in to investigate.

Design error!

The supplier indicates a foreign object as the cause of the explosion: this object gets sucked into the turbocharger, causing one or several blades to break and the turbocharger housing to shatter. Arntz is not satisfied and continues to investigate, conferring with the supplier and government inspections, organisations and institutes… and uncovering a design error!

The air inlet temperature specified in the design criteria turns out to be too low. Arntz concludes that a 5° Celsius deviation in temperature decreases life expectancy by 50%. In other words, the explosions were caused by material fatigue. The supplier proposes to solve this by replacing the aluminium blades with titanium ones, twice as expensive.


Together with the supplier, Arntz made sure:

  • repairs were made within guarantee (as a courtesy)
  • an exchange programme was initiated for all turbochargers of this type currently in operation
  • users were duly informed of the risks involved and of the exchange programme
  • the old blades were replaced by titanium blades based on operation time and the original part price

This prevented further accidents and damage. Moreover, the supplier has since modified the production process of new turbochargers to prevent this type of damage from recurring.

Case 2:

Engine damage... or attempted fraud? Arntz uncovers the true events and saves insurance heaps of money.

Case 3:

Visible and virtually invisible damage to wind turbines. Experience saves the day.