Free NEHA REHS/RS Exam Flashcards

A hazard is a source with potential to cause harm. Risk combines the likelihood of exposure or occurrence with the severity of the resulting harm.

A clear purpose and population or environmental condition of interest. Those choices determine what data, places, timing, and methods are appropriate.

It applies consistent inclusion criteria, making observations comparable across investigators, locations, and time periods.

Its locations, timing, and collection method reflect the condition or exposure being assessed instead of systematically favoring one result.

Comparing measurements over time to identify direction, seasonality, unusual changes, or emerging clusters rather than interpreting one value in isolation.

When predefined criteria indicate an unacceptable condition or a meaningful departure from the expected baseline, considering data quality and public-health impact.

To identify the inspector, explain the scope and process, confirm responsible contacts, and gather current operational information.

The inspector must know which standards apply, what evidence demonstrates compliance, and which findings have the greatest health significance.

Scheduling frequency or urgency according to factors such as hazard severity, population vulnerability, operational complexity, and compliance history.

Calibration checks measurement accuracy against a known reference so decisions are not based on systematic instrument error.

Following food through receiving, storage, preparation, cooking, holding, cooling, reheating, and service to find contamination and time-temperature risks.

The transfer of a biological, chemical, or physical hazard from a contaminated source to food, equipment, hands, or another clean surface.

In the portion most likely to be least heated or most slowly cooled, using a clean, suitable, calibrated probe placed away from the container surface.

A proactive system in which management identifies major foodborne-illness risks, sets controls, monitors performance, and corrects failures before harm occurs.

The soil treatment area is not accepting or treating effluent as designed, which may cause surfacing sewage, backups, or contamination of nearby water.

Soil texture, structure, depth, restrictive layers, and seasonal saturation affect how effluent moves and receives treatment.

A structured onsite review of the source, treatment, storage, distribution, management, and operations for deficiencies that could compromise safety.

To reduce contamination from the faucet surface so the sample better represents water in the system rather than organisms on the fixture.

The amount of disinfectant remaining after demand has been met, providing evidence of ongoing treatment capacity within the system.

Moving water through treatment and filtration, then distributing treated water throughout the venue to control contaminants and maintain uniform conditions.

Drain covers help prevent entrapment hazards, while barriers and controlled access reduce unsupervised entry and drowning risk.

A preference for preventing waste first, then reuse, recycling or recovery, treatment, and finally disposal when higher options are not feasible.

Their properties determine compatible storage, labeling, transport, treatment, emergency precautions, and lawful disposal.

To prevent leaks, needlesticks, exposure, and environmental release from generation through treatment and final disposal.

A sterile needle used for only one client prevents direct transfer of bloodborne pathogens between clients.

Whether safe water, food protection, toilets, handwashing, waste handling, and emergency capacity remain adequate for the expected crowd and duration.

Housing-related hazards such as moisture, pests, lead, unsafe structures, combustion risks, poor ventilation, and injury hazards.

Residents may have limited mobility, immunity, communication, or ability to avoid hazards, increasing the consequence of sanitation and safety failures.

It traces a hazard from its origin, through the route it travels, to the person or population exposed, helping identify effective control points.

Explain findings and their basis, confirm immediate corrections, identify remaining deadlines, and answer process questions without bargaining away requirements.

A consistent set of clinical, laboratory, person, place, and time criteria used to classify cases during an investigation.

A table with one case per row and key variables in columns, used to organize and compare investigation data quickly.

Incidence counts new cases arising over a period; prevalence measures all existing cases in a population at a point or during a period.

The proportion of an at-risk group that becomes ill during an outbreak, often compared across exposure groups to identify a likely source.

Plotting cases by onset time helps show the outbreak's magnitude, timing, likely exposure pattern, and possible outliers.

To identify plausible contacts with hazards by asking about locations, activities, products, work, housing, food, water, and timing.

It records who controlled a sample and when, supporting its identity, integrity, and defensibility from collection through analysis.

By confirming required controls were completed and using appropriate follow-up observation, records, or testing to show the hazard is acceptably controlled.

A prevention-focused approach that monitors pests, removes food and shelter, excludes entry, and uses targeted controls with the least practical risk.

Design problems can be corrected on paper before they become costly physical hazards or barriers to compliant operation.

A step where control can be applied and is essential to prevent, eliminate, or reduce a significant food-safety hazard to an acceptable level.

A measurable boundary that separates acceptable from unacceptable operation at a critical control point.

That an alternative to the prescriptive requirement will provide equivalent public-health protection through supported controls and monitoring.

A valid permit shows the operation has entered the applicable oversight system, but it does not by itself prove current compliance.

Objective observations, accurate measurements, cited requirements, dates, responsible parties, and clear documentation of corrections and follow-up.

State the observed condition, explain the health significance, connect it to the applicable requirement, and identify the needed correction.

It is specific about the outcome required and timing while allowing the responsible party to choose a lawful, effective method when alternatives exist.

Explaining requirements and control options so a person can prevent or correct hazards without compromising the regulator's impartial enforcement role.

Timely, accurate, understandable information that explains what is known, what is uncertain, who may be affected, and what protective actions to take.

They contribute local knowledge, trusted communication channels, resources, and implementation support that can make health interventions more practical and equitable.