NCT Regulatory Compliance & Legal Framework 2 — Questions and Answers
Question 1: Under ASHRAE 52.2, what does the Minimum Efficiency Reporting Value (MERV) rating system primarily measure?
- Filter pressure drop at rated airflow
- Particle size capture efficiency across three particle size ranges (Correct answer)
- Total dust holding capacity in grams
- Filter media thickness and fiber density
Correct answer: Particle size capture efficiency across three particle size ranges
MERV rates filters by their ability to capture particles in three size ranges: E1 (0.3–1.0 µm), E2 (1.0–3.0 µm), and E3 (3.0–10.0 µm).
Question 2: Which federal agency enforces the National Emission Standards for Hazardous Air Pollutants (NESHAP) that may affect industrial air filtration systems?
- OSHA
- EPA (Correct answer)
- NIOSH
- NFPA
Correct answer: EPA
The Environmental Protection Agency (EPA) is responsible for enforcing NESHAP regulations under the Clean Air Act.
Question 3: A facility manager installs MERV 8 filters in a hospital critical care area that requires MERV 14 per ASHRAE 170. This is a violation of which type of standard?
- Voluntary consensus standard
- Mandatory code-adopted standard (Correct answer)
- Manufacturer warranty requirement
- Insurance underwriting guideline
Correct answer: Mandatory code-adopted standard
ASHRAE 170 is adopted by many state and local codes as mandatory for healthcare facilities, making non-compliance a code violation.
Question 4: What is the primary purpose of the EPA's Clean Air Act Section 112 as it relates to air filtration?
- It mandates filter replacement schedules for commercial buildings
- It sets emission standards for hazardous air pollutants from stationary sources (Correct answer)
- It establishes indoor air quality thresholds for offices
- It requires HEPA filtration in all industrial exhaust systems
Correct answer: It sets emission standards for hazardous air pollutants from stationary sources
Section 112 of the Clean Air Act establishes NESHAP, controlling hazardous air pollutant emissions from stationary industrial sources.
Question 5: When a filter manufacturer claims a product is 'HEPA,' what minimum efficiency must it demonstrate per U.S. DOE standards?
- 95% efficiency at 0.3 µm
- 99.97% efficiency at 0.3 µm (Correct answer)
- 99.5% efficiency at 1.0 µm
- 99.9% efficiency at 0.5 µm
Correct answer: 99.97% efficiency at 0.3 µm
DOE defines a HEPA filter as one that captures at least 99.97% of particles at the most penetrating particle size of 0.3 µm.
Question 6: Which OSHA standard most directly governs worker exposure to airborne contaminants and therefore influences industrial filtration system design?
- 29 CFR 1910.134 (Respiratory Protection)
- 29 CFR 1910.1000 (Air Contaminants / PELs) (Correct answer)
- 29 CFR 1910.147 (Lockout/Tagout)
- 29 CFR 1910.132 (PPE General Requirements)
Correct answer: 29 CFR 1910.1000 (Air Contaminants / PELs)
29 CFR 1910.1000 establishes Permissible Exposure Limits (PELs) for hundreds of airborne substances, directly driving ventilation and filtration requirements.
Question 7: A technician discovers that a client's nuclear facility air filtration system must comply with 10 CFR Part 50. Which regulatory body issues this standard?
- EPA
- NRC (Correct answer)
- DOE
- OSHA
Correct answer: NRC
10 CFR Part 50 is issued by the Nuclear Regulatory Commission (NRC) and governs domestic licensing of production and utilization facilities including nuclear plants.
NCT Regulatory Compliance & Legal Framework 2
Under ASHRAE 52.2, what does the Minimum Efficiency Reporting Value (MERV) rating system primarily measure?