Dust & Occupational Hygiene Documentation

From the pump on a worker's belt to the control that changed because of it

This section covers the Dust, Exposure and Occupational Hygiene application specifically. For how the interface works in general (lists, forms, navigation, deletion), see the Framework Guides above.

In This Section

• Application Overview — what the app models and why
• Quick Reference — menu map, demo codes and statuses
• System Diagram — the data model mapped, with an interactive pan/zoom viewer

The Application in One Paragraph

DEOH manages occupational-hygiene exposure on a mine or processing site. Workers doing comparable work are grouped into a SimilarExposureGroup, whose SegTasks are linked to the ExposureSources — plant, processes, activities, materials — that emit each HazardousSubstance. A HygieneRiskAssessment sets the risk and names the Controls credited with managing it. A SamplingProgram and its SamplingPlans then decide who gets sampled, for what, how often and by which SamplingMethod. In the field a SamplingEvent produces Samples — with pre- and post-calibration on the pump, SampleTaskIntervals slicing the shift into what the wearer was actually doing, and a ChainOfCustody carrying the filters to the laboratory. The LaboratoryResult comes back and becomes an ExposureAssessment against a versioned ExposureStandard, either on its own or as part of a StatisticalExposureAssessment for the whole group. Where the result exceeds the limit, an ExposureExceedance opens, a HygieneInvestigation finds out why, CorrectiveActions change something, and a ControlVerification proves the change worked before the exceedance can close. Workers are told their results through WorkerNotification, and where surveillance is triggered a restricted HealthSurveillanceReferral records the referral and the fitness outcome — nothing clinical.

Design boundary. This is an operational occupational-hygiene system, not a clinical medical record. It holds referral status and the work-management fitness outcome because rostering depends on them. Diagnoses, clinical notes and health-test results stay with the health provider and are deliberately absent from the schema.