Hearing protection must be worn within how many meters of the LS?

The requirement for hearing protection within a certain distance from the launch site (LS) is based on the levels of noise generated during the launch operations, which can pose a risk to hearing. The guideline specifies that hearing protection must be worn within 10 meters of the launch site. This distance is determined to ensure that personnel are adequately protected from the high decibel levels produced during a launch, which can exceed safe exposure limits.

Hearing protection is critical in maintaining the health and safety of individuals working in close proximity to noisy environments, such as those found during military operations involving launch systems. The reason why 10 meters is the specific threshold is likely linked to standard operational safety protocols, which aim to minimize the risk of hearing loss or damage that could result from exposure to such intense sound levels. The other distances listed do not align with the established safety guidelines for hearing conservation around launch sites.