Is the total noise level below 45 dB (A)?
The noise level limit refers to background noise including HVAC as well as noise sources in continuous use within the room. For mobile offshore units the maximum noise limit is 5 dB higher during operation. Noise contribution from the HVAC system should be max. 40 dB (A).
Check: control room equipment, ventilation system/fans, printers, equipment in adjacent rooms and process equipment.
Comments/Recommendations
RSOK S-002, REV 4, Annex A.Forskrift om støy på arbeidsplassen §§6 og 7.
DC: Total noise level: 65 dB (+ 5 dB for mobile Offshore Units). Noise from the HVAC system should be maximum 60 dB (A).