Which of the following is a failure related to X-ray equipment and accessories?

Improper film storage constitutes a failure related to X-ray equipment and accessories because it can significantly affect the quality of the diagnostic images produced. Film must be stored in appropriate conditions to prevent exposure to moisture, light, and temperature variations that can lead to fogging or deterioration of the film. This not only compromises the integrity of the images but also can lead to misdiagnosis or the need for repeat examinations, which can increase patient exposure to radiation.

Understanding the proper storage requirements for radiographic film is crucial for maintaining the quality of the imaging process. This includes keeping film in a cool, dry place, away from any source of ionizing radiation and ensuring that packaging is intact until used.

In contrast, the other options focus on operational or procedural errors rather than failures of the equipment or accessories themselves. Incorrect technical factors and improper accessory use pertain to incorrect application or methodology rather than a physical failure of the equipment or how it's stored. Communication with patients, while essential for ensuring safety and procedural clarity, does not directly relate to the integrity of the X-ray equipment or its accessories.