Occupational Hygiene Monitoring Survey Report
Noise Monitoring Survey Report
ABC Manufacturing · Isando Works
09 Jul 2026
Project Number OH-2026-102 · Revision 0
Survey Information Details
| Report Number | OH-2026-102-R0 |
| Project Number | OH-2026-102 |
| Client | ABC Manufacturing |
| Site / Premises | Isando Works |
| Physical Address | 8 Gewel St, Isando, Gauteng |
| Survey Date | 09 Jul 2026 |
| Stress Factor | Noise |
| Surveyor | Sipho Ngcobo |
| Technical Signatory | Riaan de Villiers |
| Applicable Legislation | Noise Induced Hearing Loss Regulations, 2003 · SANS 10083 |
| Occupational Exposure Limit | TWA-OEL 85 dB(A) · Action Level 82 dB(A) · Peak 140 dB(C) |
1.0 Executive Summary
ABC Manufacturing contracted The Safety Network (Africa) (Pty) Ltd to conduct a noise survey at Isando Works, 8 Gewel St, Isando, Gauteng. The survey was conducted on 09 Jul 2026 by Sipho Ngcobo.
Two of the four personal noise exposures measured exceeded the TWA-OEL of 85 dB(A). Production Hall and Workshop remain noise zones requiring mandatory hearing protection.
2.0 Purpose Of The Survey
- Determine the noise exposure of employees during normal production activities
- Compare measured exposures with the OEL prescribed by legislation and incorporated standards
- Delineate noise zones and identify areas requiring hearing protection
- Recommend control measures to reduce exposure to below the prescribed OEL
3.0 Contents Of Report
- 1.0Executive Summary
- 2.0Table Of Contents
- 3.0List Of Tables, Figures And Diagrams
- 4.0List Of Terms And Abbreviations
- 5.0Introduction
- 6.0Monitoring Methods And Procedure Followed
- 7.0Results And Discussion
- 8.0Recommendations
- 9.0Conclusion
- 10.0Indemnity And Signatures
- 11.0References
- 12.0Annexures To The Report
4.0 Instruments Used
| Instrument | Serial Number | Calibration Due |
|---|---|---|
| Gilian 5000 pump | GIL-4402 | 04 Nov 2026 |
| Gilian 5000 pump | GIL-4407 | 22 Oct 2026 |
| SKC Airchek TOUCH | SKC-2210 | 27 Sept 2026 |
5.0 Results And Discussion
| Sample No. | Employee / Position | Area | Duration | LAeq,T dB(A) | TWA dB(A) | Peak dB(C) | OEL Exceeded |
|---|---|---|---|---|---|---|---|
| N-01 | Press Operator | Production Hall | 07:35 | 88.4 | 87.9 | 131.2 | Yes |
| N-02 | Assembler | Assembly Line 2 | 07:40 | 83.1 | 82.6 | 124.8 | No |
| N-03 | Forklift Driver | Despatch | 07:20 | 79.6 | 78.9 | 119.4 | No |
| N-04 | Maintenance Fitter | Workshop | 06:55 | 91.2 | 89.7 | 136.6 | Yes |
Two of the four personal noise exposures measured exceeded the TWA-OEL of 85 dB(A). Production Hall and Workshop remain noise zones requiring mandatory hearing protection.
6.0 Recommendations
- Maintain demarcation of the Production Hall and Workshop as noise zones
- Issue double hearing protection to the press operator and maintenance fitter
- Include all exposed employees in the medical surveillance programme
- Re-survey noise exposure within 24 months or on process change
7.0 Conclusion
Noise exposure is controlled through a hearing conservation programme. Engineering controls should be considered where exposures exceed the OEL.
8.0 Annexures To The Report
- Annexure A — Certificate Of Approval As A Department Of Employment And Labour Approved Inspection Authority
- Annexure B — SAIOH Certificates Of Surveyor And Technical Signatory
- Annexure C — Equipment Calibration Certificates
- Annexure D — Raw Measurement Data
- Annexure E — Photo Log
- Annexure F — Site And Floor Plans
- Annexure G — Noise Zone Demarcation Map
The Safety Network (Africa) (Pty) Ltd
T/A SafeNet Africa
Dept. of Employment and Labour: AIA OH 0242 CI062
Signature of Technical Signatory
Riaan de Villiers
Signature of Surveyor
Sipho Ngcobo