Common challenges in therisk assessment of lightning protection system include accurately determining the building's vulnerability based on its size, height, and location. Environmental factors, such as nearby tall structures or trees, can complicate the assessment. Another challenge is assessing the effectiveness of existing grounding systems, which may not meet modern standards or requirements. Additionally, the process requires expertise to interpret complex codes and standards correctly. Ensuring that the protection system is adequate for potential lightning strikes while considering local weather conditions and soil resistivity also presents challenges, making accurate evaluation essential for safety and compliance.