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👂 Hearing Conservation Program

Compute the daily exposure LEX,8h from task noise levels & durations, compare with directive 2003/10/EC action values, choose hearing protectors by SNR, and export a complete program (measurements → controls → HPD → audiometry → training).

1 · Daily exposure LEX,8h

Task / area	Level dB(A)	Duration min	Dose share

2 · Hearing protector selection (SNR method)

Ambient level dB(A) (use LEX or task level)

Protector SNR (dB)

Effective level ≈ ambient − (SNR − 4 dB real-world derating). Target residual: 70–80 dB(A) — overprotection (< 65 dB) isolates the worker.