What is the formula for Working Level (WL)?

The formula for Working Level (WL) is significant in understanding the measurement of radon and its decay products in the environment. The formula ( WL = (ER \times pCi/L) / 100 ) accurately expresses the relationship between the exposure rate (ER) and the concentration of radon measured in picocuries per liter (pCi/L).

This formula incorporates both the exposure rate, which relates to the amount of energy emitted by radon decay products, and the concentration of radon itself, effectively allowing for the calculation of Working Level in a way that reflects the dosimetry associated with radon exposure. The factor of 100 is applied to adjust the units appropriately, ensuring the result maintains a standardized measure that is relevant to health physics and radiation safety.

Understanding this formula is crucial for radon measurement technicians as it emphasizes the need to accurately assess both the concentration of radon and its decay products to evaluate potential health risks associated with radon exposure accurately. Since the other options do not represent the established and correct relationship between the exposure rate and radon concentration as understood in the field, they do not provide a valid interpretation of Working Level.