Answer :
Final answer:
Without specific details on the valve cleaning situation, calculating the worker's CEDE is not possible. Generally, OSHA PELs and NIOSH IDLH levels would be used to assess the safety of such activities.
Explanation:
When considering the worker's CEDE (Committed Effective Dose Equivalent) for cleaning the internals of a valve without respiratory protection, it is important to calculate the exposure to harmful substances or radiation over time. However, without specific details about the type of valve, the substance involved, or the potential exposure risks such as radiation or hazardous chemicals, a precise calculation cannot be provided. Generally, such exposure risks should be assessed in accordance with Occupational Safety and Health Administration (OSHA) guidelines and regulations like Permissible Exposure Limits (PELs) or the National Institute for Occupational Safety and Health's (NIOSH) IDLH (Immediately Dangerous to Life or Health) levels to prevent health risks such as cancer or genetic defects. In the absence of the specific details, no exact answer can be given.
