Given the following information 91 dBA for 27 hours 81 dBA f

Given the following information; 91 dBA for 2.7 hours, 81 dBA for 3.3 hours, and 83 for 2 hours, calculate an employee\'s noise dosage as a % of OSHA\'s PEL.

Solution

% OSHA (Occupational Safety and Health Administration) PEL = 100 [(C1/T1) + (C2/T2) + (C3/T3)]

T = reference duration corresponding to the measured sound level, L

C1 = 2.7 hrs; T1 = 91 dBA (L) = 7.0

C2 = 3.3 hrs; T2 = 81 dBA (L) = 27.9

C3 = 2 hrs; T3 = 83 dBA (L) = 21.1

% OSHA PEL = 100 [(C1/T1) + (C2/T2) + (C3/T3)] = 100* (2.7/7 + 3.3/27.9 + 2/21.1) = 100 (0.387 + 0.118 + 0.094) = 59.9%