Description
Return excludedMinutes, sampledMinutes=shift-excluded, and sampleShare=sampled/shift.
Occupational exposure calculations combine measured quantities, duration, reference conditions, weighting, and sampling support. Linear concentrations, squared acceleration, and logarithmic sound levels require different arithmetic. A supplied reference or limit is not automatically the applicable standard, and a local calculation is separate from a full exposure and safety assessment.
Return excludedMinutes, sampledMinutes=shift-excluded, and sampleShare=sampled/shift.
When to use this tool
Use Occupational Sample Break Time Exclusion when you need this particular sampling, duration, reference-unit, physical-exposure, or reporting-base term.
How to use the tool and how it works
- Enter shiftMinutes, breaks, overlappingBreakMinutes, sampledBreakMinutes. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read excludedMinutes, sampledMinutes, sampleShare. Use the output convention below.
For positive shiftMinutes and nonnegative breaks and credits require overlap+sampledBreak<=sum(breaks) and excludedMinutes=sum(breaks)-overlap-sampledBreak<=shift. Return excludedMinutes, sampledMinutes=shift-excluded, and sampleShare=sampled/shift.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| shiftMinutes | Shift Minutes | Required. Finite number; strictly above 0. |
| breaks | Breaks | Required. Array of finite number; maximum items 256. |
| overlappingBreakMinutes | Overlapping Break Minutes | Required. Finite number; minimum 0. |
| sampledBreakMinutes | Sampled Break Minutes | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| excludedMinutes | Excluded Minutes | Required. Finite number. |
| sampledMinutes | Sampled Minutes | Required. Finite number. |
| sampleShare | Sample Share | Required. Finite number. |
{
"input": {
"shiftMinutes": 480,
"breaks": [
30,
15
],
"overlappingBreakMinutes": 5,
"sampledBreakMinutes": 10
},
"output": {
"excludedMinutes": 30,
"sampledMinutes": 450,
"sampleShare": 0.9375
}
}Limitations and assumptions
- All inputs use minutes and the two credits must describe distinct accounting adjustments. Actual interval overlap, sampler operation, representative coverage, exposure magnitude, and workplace safety are not verified.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use a complete hazard-specific assessment with calibrated measurements and the appropriate exposure model. Verify reference conditions, sampling coverage, weighting, denominator, and the applicable professional or regulatory method.
References
Similar or alternative tools
- Occupational Skin Contact Area Time Term
For nonnegative area and duration, contactedFraction in [0,1], and nonnegative integer repeatedContacts return areaTime=area*fraction*duration and cumulativeAreaTime=areaTime*repeatedContacts.
- Dust Sampler Flow Time Volume Term
Trapezoidal sampler flow integration with an explicit volume correction.