Mixed Deck — All HSE Topics Flashcards

A storm drain at a manufacturing facility discharges to a nearby river after a rain event. What type of pollution does this represent?

Answer: Point source pollution

A discharge from a discrete conveyance such as a storm drain or pipe is classified as point source pollution under the Clean Water Act.

When an emergency response plan includes a 'shelter-in-place' option, the FIRST action employees should take is:

Answer: Move to a designated interior room and seal gaps to reduce air infiltration

Shelter-in-place requires moving quickly to a sealed interior room to minimize exposure to outdoor airborne hazards.

Under OSHA's Hazard Communication Standard (HCS), which of the following information is required in Section 8 of a Safety Data Sheet (SDS) but is NOT required on the shipped container's label?

Answer: Specific Occupational Exposure Limits (e.g., PELs, TLVs).

The shipped container label is a summary of the most critical hazard information and must include the signal word, pictograms, and hazard statements. The Safety Data Sheet (SDS) is a more comprehensive document. Specifically, Section 8 of the SDS, 'Exposure Controls/Personal Protection,' must contain detailed information such as OSHA Permissible Exposure Limits (PELs) and ACGIH Threshold Limit Values (TLVs), which are not required on the label.

Which type of hazardous substance is most effectively captured by a charcoal adsorption tube during air sampling?

Answer: Volatile organic compounds (VOCs) such as benzene and toluene

Activated charcoal tubes adsorb volatile organic compounds from sampled air; the compounds are later desorbed and analyzed by gas chromatography.

The Emergency Planning and Community Right-to-Know Act (EPCRA) Section 304 requires facilities to report:

Answer: Immediate release notifications to state and local authorities when a reportable quantity is exceeded

EPCRA Section 304 mandates immediate emergency notification to the LEPC and State Emergency Response Commission when a reportable quantity of an extremely hazardous substance is released.

Why is post-incident analysis critical?

Answer: To improve future response and prevention

Post-incident analysis is critical because it provides an opportunity to learn from past events and implement improvements for future response and prevention. By thoroughly investigating what happened, identifying root causes, and evaluating the effectiveness of emergency procedures, organizations can refine their safety protocols. This continuous improvement cycle helps reduce the likelihood of similar incidents and enhances overall safety performance.

What is the primary health risk associated with chronic inhalation of crystalline silica dust?

Answer: Silicosis (irreversible fibrotic lung disease)

Chronic inhalation of respirable crystalline silica causes silicosis, an irreversible and potentially fatal fibrotic lung disease, and also increases lung cancer risk.

Under the U.S. Clean Water Act (CWA), what is the primary purpose of a Stormwater Pollution Prevention Plan (SWPPP)?

Answer: To identify potential pollutant sources and describe the Best Management Practices (BMPs) to prevent them from contaminating stormwater discharges.

A SWPPP is a site-specific plan required by the National Pollutant Discharge Elimination System (NPDES) permit program. Its fundamental purpose is to identify potential sources of stormwater pollution and detail the control measures, known as Best Management Practices (BMPs), that will be implemented to minimize or eliminate the discharge of these pollutants into local water bodies.

A chemical facility receives a warning of an imminent external atmospheric release of a toxic gas from an adjacent industrial plant. The wind is blowing the plume directly towards the facility, and the substance is known to dissipate within an hour. What is the MOST appropriate immediate protective action for the facility's employees?

Answer: Initiate a shelter-in-place protocol, securing all doors, windows, and ventilation systems.

For an external, short-duration toxic airborne hazard, sheltering-in-place is the preferred protective action. This strategy uses the building as a barrier, preventing personnel from moving through the contaminated plume during an evacuation. Evacuating would likely expose them to the hazard, while continuing normal operations is unsafe.

What is the first priority in any emergency response situation?

Answer: Life safety of all persons involved

Life safety is always the first priority in emergency response, preceding property protection and environmental concerns.

An organization implementing behavior-based safety (BBS) should primarily use observation data to:

Answer: Identify trends in at-risk behaviors and guide targeted safety interventions and coaching

BBS observation data is most valuable when used to identify systemic behavioral trends and inform coaching conversations, not as a disciplinary or competitive tool.

The 'waste hierarchy' in sustainability practice ranks which option as most preferred?

Answer: Source reduction / prevention

The waste hierarchy prioritizes source reduction (preventing waste generation) above all other options, including reuse, recycling, energy recovery, and disposal.

The concept of 'all-hazards' emergency preparedness means that an organization's emergency plan should:

Answer: Develop core response capabilities applicable across a wide range of emergencies

All-hazards preparedness builds flexible, scalable core capabilities (communications, command, evacuation, shelter) that apply across many types of emergencies rather than scripting every scenario.

Which of the following best describes a key difference between qualitative and quantitative risk assessment?

Answer: Qualitative assessment uses descriptive scales like 'high, medium, low', while quantitative assessment uses numerical probabilities and impacts.

Qualitative risk assessment is subjective and uses descriptive terms and scales (e.g., high, medium, low) to categorize the likelihood and impact of risks based on expert opinion. In contrast, quantitative risk assessment is objective, using verifiable numerical data, statistics, and probabilities to analyze risk in terms of specific, measurable impacts like cost or schedule delays.

Under NIMS, 'Unified Command' is used when:

Answer: Multiple agencies or jurisdictions share incident management authority

Unified Command allows multiple agencies with different legal authorities to manage an incident together without losing individual agency authority.

What does 'secondary containment' refer to in the context of chemical storage?

Answer: A structure designed to contain spills or leaks from primary containers

Secondary containment is a physical barrier such as a berm, dike, or containment basin designed to capture leaks or spills from primary storage containers before they reach the environment.

Work-related musculoskeletal disorders (WMSDs) are primarily caused by which combination of ergonomic risk factors?

Answer: Force, repetition, awkward postures, contact stress, and vibration

WMSDs are driven by ergonomic risk factors including forceful exertions, repetitive motions, awkward postures, contact stress, and hand-arm or whole-body vibration.

What is 'loss causation' as described by Frank Bird's Domino Theory?

Answer: A sequence where lack of management control leads to basic causes, immediate causes, incident, and loss

Bird's updated domino model shows that management system deficiencies cascade through root and immediate causes to produce incidents and losses.

According to OSHA regulations in the United States, what is the mandatory reporting timeframe for a work-related incident that results in the in-patient hospitalization of one employee?

Answer: Within 24 hours

OSHA requires employers to report any work-related in-patient hospitalization, amputation, or loss of an eye within 24 hours of learning about it. A work-related fatality must be reported within 8 hours.

Which tool is used to identify root causes in incident investigation?

Answer: Root cause analysis

Root cause analysis is a structured problem-solving tool specifically used to identify the underlying, fundamental reasons why an incident occurred, rather than just addressing its immediate symptoms. By delving deeper into the chain of events and contributing factors, organizations can implement effective corrective actions that prevent recurrence. This systematic approach helps eliminate the true source of problems.