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Planning for Hazardous Materials Flashcards

7 cards from real CHMM practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. Which document is the primary source used to determine isolation distances and protective action distances during a hazardous materials highway or rail incident?

    Answer: Emergency Response Guidebook (ERG)

    The ERG, published by PHMSA, DOT Canada, and Mexico's SCT, provides first responders with initial isolation and protective action distances for hazmat incidents.

  2. In OSHA's PSM standard (29 CFR 1910.119), the Management of Change (MOC) procedure is required when:

    Answer: Changes are made to technology, equipment, procedures, or facilities involving covered processes (except like-for-like replacements)

    MOC requires formal review and authorization before any change — except replacement-in-kind — to ensure process safety is not compromised.

  3. A community's emergency response plan should include a notification chain that contacts which entities when a reportable hazardous materials release occurs?

    Answer: The LEPC, State Emergency Response Commission, National Response Center, and local responders as appropriate

    Regulatory requirements under EPCRA and CERCLA mandate notification of the NRC, SERC, and LEPC in addition to local emergency responders for reportable releases.

  4. Which planning tool uses atmospheric dispersion modeling to predict the concentration and movement of airborne chemical releases?

    Answer: CAMEO/ALOHA

    ALOHA (Areal Locations of Hazardous Atmospheres), part of the CAMEO suite, models the dispersion of airborne chemical releases to estimate affected areas.

  5. Under EPA's Risk Management Program (RMP), a Program 3 process is subject to the most stringent requirements, which include:

    Answer: Prevention program including PHA, MOC, pre-startup safety review, and mechanical integrity checks

    Program 3 applies PSM-equivalent prevention requirements including PHA, MOC, mechanical integrity, and pre-startup safety reviews for the highest-risk processes.

  6. A facility's emergency response plan must be coordinated with which external organization to ensure compatibility with community-level response plans?

    Answer: The Local Emergency Planning Committee (LEPC)

    EPCRA requires facility emergency plans to be coordinated with the LEPC so that on-site plans integrate seamlessly with community emergency response plans.

  7. Which hazard analysis technique uses a systematic 'what if' questioning approach structured around guide words like NO, MORE, LESS, and REVERSE?

    Answer: Hazard and Operability Study (HAZOP)

    HAZOP uses standardized guide words applied to process parameters to systematically identify deviations from design intent that could create hazards.