Sample only — fictional data
Occupational noise exposure — sample report
A weighted exposure calculation for a fictional working day, compared to the table in the Second Schedule to the noise regulations.
Sample only — fictional data
All the data in this report is fictional. The organisation, the areas, the hazards and the values belong to no client and describe no real site.
Sample input — not an actual occupational hygiene measurement.
The report below is produced by the same tool on this site, from the same calculation engines — only the data is fictional. The scores, gradings and results are computed here and now, not copied into the sample.
Sample only — fictional data
Occupational noise exposure
Weighted exposure calculation and comparison to the regulations — Hoshen Safety, Hygiene and Environmental Engineering and Consulting
The tool computes a weighted exposure from values you enter and compares it to the table in the Second Schedule to the regulations. It is not a sound level meter, not an occupational environmental test, and not a substitute for a hygiene survey. Under the regulations, occupational environmental testing of noise levels is carried out by an accredited laboratory tester from a laboratory accredited by the Chief Labour Inspector.
Inputs
| # | Description | Noise level (dB(A)) | Duration (minutes) | Permitted duration at this level |
|---|---|---|---|---|
| 1 | Sawing station | 94 | 150 | 1 h |
| 2 | Packing line | 86 | 180 | 6.3 h |
| 3 | Warehouse and loading area | 79 | 90 | The schedule states no permitted duration at this level |
| 4 | Control room | 68 | 60 | The schedule states no permitted duration at this level |
The calculation
LEX,8h = 10 · log₁₀ ( (1/480) · Σ tᵢ · 10^(Lᵢ/10) )
Each period is converted to acoustic energy, the energies are summed, and the total is normalised to a 480-minute working day. Because it is energy that is summed, doubling the time adds about 3 decibels — a property of sound, not of the regulations.
Comparison to the regulations
- Weighted exposure over 8 hours
- 89.8 dB(A)
- The value permitted for an 8-hour working day
- 85 dB(A) / 8 h
- Distance from the permitted value
- 4.8 dB above
- Daily dose
- A dose cannot be computed while a period falls below the schedule
- Total time entered
- 480 min
Professional reading
Above the exposure permitted for an 8-hour working day
On the values entered, the weighted exposure is above that permitted for an 8-hour working day. A sound conclusion requires a measured occupational environmental test; a finding like this justifies examining noise reduction at source, shorter exposure times or separation, alongside the further duties in the regulations.
Source and version
Safety at Work (Occupational Hygiene and Workers' Health in Noise) Regulations, 1984
As amended to: 2000-04-04 · Verified on: 2026-08-22 · Independent transcription lineages: 2
תשמ״ד — KT 4647, 1984-06-21, p. 1752 · תשמ״ה — KT 4833, 1985-07-07, p. 1686 · תשמ״ז — KT 5015, 1987-03-19, p. 641 · תשנ״א — KT 5303, 1990-10-30, p. 150 · תשנ״ב — KT 5391, 1991-10-17, p. 272 · תשנ״ה — KT 5655, 1995-01-22, p. 597 · תש״ס — KT 6028, 2000-04-04, p. 431
What was not established: No evidence was found of an amendment to these regulations in 2022–2026, and no positive evidence of its absence either. The calculation is made against the text as amended to 2000.
Limitations
The tool computes a weighted exposure from values you enter and compares it to the table in the Second Schedule to the regulations. It is not a sound level meter, not an occupational environmental test, and not a substitute for a hygiene survey. Under the regulations, occupational environmental testing of noise levels is carried out by an accredited laboratory tester from a laboratory accredited by the Chief Labour Inspector.
The tool determines nothing about hearing, health or a worker's medical fitness. Medical examinations and fitness for work in harmful noise are determined by an authorised physician under the regulations.
Testing frequency: At least once every two years, unless a regional labour inspector has directed otherwise · Who carries out the test: An accredited laboratory tester — an employee of a laboratory accredited by the Chief Labour Inspector to carry out occupational environmental testing of noise levels.
Issued on 14 May 2026
The tool that produces this report
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