Are you unknowingly reducing tube life?

Issue & cause

Our generators are designed to support the long-term health of the X-ray tube. Under normal operating conditions, the system initiates a controlled shutdown sequence where the high voltage ramps down gradually. This process ensures that the tube target cools in a stable, predictable way—minimizing mechanical and thermal stress.

But when high voltage is cut off abruptly, this controlled process doesn’t occur. The sudden stop creates an internal thermal shock that can quickly degrade the target material. Over time, this leads to premature wear, reduced image quality, and a shortened tube lifespan.

These irregular shutdowns are typically caused by three factors:

• Activation of safety interlocks

• Emergency shutdowns

• Improperly configured customer interlocks

The root cause is often either human (such as an operator opening a door mid-exposure) or technical (like poorly timed PLC logic in the OEM’s system). Regardless of the trigger, the result is the same: unnecessary stress on the tube and lost value from the hardware.

Consequences

While a single abrupt shutdown may not cause visible harm, repeated events create a cumulative effect. Each time the system shuts down without properly ramping down high voltage, the X-ray tube is exposed to additional thermal stress. Over time, this accelerates wear on the target and degrades the focal spot.

The result is often:

• Dose loss during imaging

• A drop in image quality

• Increased exposure time requirements

• Ultimately, a reduction in overall system performance

BLOX helps prevent this by making the invisible visible. By catching irregular shutdown patterns early, BLOX allows OEMs and users to act before these small events turn into costly service calls or premature component replacements.