How often must stored pressure extinguishers that require a 12-year Hydro undergo internal examinations?

Stored pressure extinguishers that require a 12-year hydrostatic test must undergo internal examinations every 6 years. This is essential for maintaining their effectiveness and ensuring safety.

The 6-year internal examination serves to check for any internal corrosion or damage that might not be visible from the outside. During this inspection, technicians typically inspect the interior components and ensure that all parts are functioning correctly and that the extinguisher is still capable of performing as intended if needed in an emergency.

Following the internal inspection, if the extinguisher passes, it is reassembled and marked to indicate it has been serviced. This scheduled examination is crucial in maintaining compliance with safety regulations and best practices in fire safety management.