Description
Sum all exposures and those satisfying both flags; return their share when totalExposure>0, otherwise zero with defined=false.
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.
Sum all exposures and those satisfying both flags; return their share when totalExposure>0, otherwise zero with defined=false.
When to use this tool
Use Exposure Source Reference Share 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 exposures, sourceMatched, referenceMatched. Keep parallel arrays aligned. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read totalExposure, supportedExposure, share, defined. Inspect defined before interpreting the associated values.
Require aligned nonnegative exposures with sourceMatched and referenceMatched. Sum all exposures and those satisfying both flags; return their share when totalExposure>0, otherwise zero with defined=false.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| exposures | Exposures | Required. Array of finite number; minimum 0; maximum items 256. |
| sourceMatched | Source Matched | Required. Array of boolean; maximum items 256. |
| referenceMatched | Reference Matched | Required. Array of boolean; maximum items 256. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| totalExposure | Total Exposure | Required. Finite number. |
| supportedExposure | Supported Exposure | Required. Finite number. |
| share | Dimensionless share using the stated denominator, not a percentage numeral. | Required. Finite number. |
| defined | Whether the stated denominator or quantity is defined; inspect before using a placeholder. | Required. Boolean. |
{
"input": {
"exposures": [
2,
3,
5
],
"sourceMatched": [
true,
true,
false
],
"referenceMatched": [
true,
false,
true
]
},
"output": {
"totalExposure": 10,
"supportedExposure": 2,
"share": 0.2,
"defined": true
}
}Limitations and assumptions
- All exposures need an additive common basis. Source matches are supplied and the result measures support coverage, not actual dose, source reliability, health risk, or adherence to an exposure standard.
- 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
- Exposure Limit Supplied Units Crosswalk
Compare a measurement to an explicit limit after a supplied directed unit factor.
- Exposure Task Double Count Minute
Remove supplied duplicate task minutes without assessing exposure safety.