Overview

A quantitative assessment of occupational noise exposure levels across all work areas and job functions. The survey determines whether employees are exposed above the 85 dB(A) noise rating limit (8-hour time-weighted average) as prescribed by the Noise-Induced Hearing Loss Regulations, 2003.

Methodology

  • Walk-through assessment to identify noise sources and exposed workers
  • Area noise measurements using a Type 1 or Type 2 integrating sound level meter (SLM)
  • Personal noise dosimetry for workers in identified high-risk zones
  • Noise mapping of the facility on a floor plan
  • Energy-averaged exposure calculations (LAeq, TWA, peak levels)

What You Receive

  • Comprehensive noise survey report with floor plan noise map
  • Compliance status per area against the 85 dB(A) limit
  • Personal exposure profiles per job category
  • Risk ratings (low / medium / high) per area
  • Recommendations for engineering controls, administrative controls, and hearing protection
  • Guidance on hearing conservation programme requirements
Applicable Legislation:
Noise-Induced Hearing Loss Regulations, 2003 (NIHL Reg 7); OHS Act 85 of 1993 Section 8; SANS 10083:2013.

Frequently Asked Questions

What is the legal noise limit in the workplace?
The NIHL Regulations 2003 set the noise rating limit at 85 dB(A) as an 8-hour time-weighted average. Employers must implement controls if workers are exposed above this level.
How often must noise surveys be done?
Noise surveys must be conducted every 24 months (2 years) by an Approved Inspection Authority, or sooner if there are changes to processes or equipment.
Will the noise survey disrupt production?
No. Noise surveys are non-intrusive and are conducted during normal working operations to ensure representative measurements.