CHMM Risk Assessment and Hazard Analysis Flashcards
6 cards from real CHMM practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CHMM Risk Assessment and Hazard Analysis flashcards as text
In Fault Tree Analysis (FTA), what does a 'top event' represent?
Answer: The undesired event whose causes are being analyzed
The top event in an FTA is the undesired outcome (such as a toxic release) from which the analyst works downward to identify contributing causes.
OSHA's Process Safety Management (PSM) standard (29 CFR 1910.119) applies to processes containing threshold quantities of which types of substances?
Answer: Highly hazardous chemicals including flammables and toxics
PSM applies to processes with threshold quantities of highly hazardous chemicals—substances with toxic, flammable, reactive, or explosive properties—listed in Appendix A.
Which consequence modeling tool is commonly used to estimate the dispersion of a toxic gas release in the atmosphere?
Answer: CAMEO/ALOHA
ALOHA (Areal Locations of Hazardous Atmospheres), part of the CAMEO suite, models toxic and flammable gas dispersion to help responders and planners estimate hazard zones.
In the context of chemical risk assessment, 'dose-response assessment' establishes what relationship?
Answer: The relationship between the amount of chemical exposure and the likelihood or severity of health effects
Dose-response assessment defines how increasing doses of a chemical lead to increasing probability or severity of adverse health effects in exposed populations.
A 'bowtie' risk analysis diagram combines which two analytical methods?
Answer: Fault Tree Analysis (left side) and Event Tree Analysis (right side)
The bowtie model places the hazardous event at its center, with FTA mapping causes on the left and ETA mapping consequences/barriers on the right.
Which EPA guidance document provides the standard framework for conducting baseline risk assessments at contaminated Superfund sites?
Answer: EPA Risk Assessment Guidance for Superfund (RAGS)
EPA's Risk Assessment Guidance for Superfund (RAGS) provides the methodological framework for conducting human health risk assessments at CERCLA sites.