100+ Free NICET Special Hazards Level I Practice Questions
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Key Facts: NICET Special Hazards Level I Exam
83
Questions (current exam; 91 from Fall 2026)
NICET Special Hazards Systems program
140 min
Time Limit
NICET Special Hazards Systems program
$230
Exam Fee
NICET
43-49%
Exam weight on Inspection, Testing, and Maintenance
SHS Level I Content Outline (2021)
4 books
Open-book references: NFPA 12, 70, 72, 2001
SHS Level I Selected General References
6 months
Typical field experience for Level I
SHS Level I Content Outline (2021)
3 years
Recertification cycle (CPD)
NICET certification requirements
The NICET SHS Level I exam certifies entry-level special hazards technicians - the people who inspect, install, and maintain clean agent, inert gas, and CO2 suppression systems in data centers, control rooms, and industrial hazards. The current exam is 83 multiple-choice questions in 140 minutes, computer-based at Pearson VUE, costing $230, and open book with the 2018-2020 editions of NFPA 12, 70, 72, and 2001. Domain weights from the official outline: Inspection, Testing, and Maintenance 43-49%; Installation 22-28%; System Design and Configuration 11-17%; Safety 11-17%; Repair and Recharge 6-12%. Expect questions on the 5%/10% halocarbon and 5% inert-gas container loss thresholds, 5-year hose and hydrostatic test rules, enclosure integrity, EMT support and conduit fill from the NEC, FPL cable types, releasing sequences with cross-zoning and dead-man abort switches, CO2 life-safety rules, and OSHA jobsite safety. Scoring is pass/fail against a NICET cut score. Note: updated SHS exams arrive Fall 2026 - Level I becomes 91 questions based on 2022 code editions with searchable on-screen references.
Sample NICET Special Hazards Level I Practice Questions
Try these sample questions to test your NICET Special Hazards Level I exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1During a semiannual inspection of a refillable HFC-227ea container, the recorded agent weight shows a loss compared with the nameplate fill weight. Per NFPA 2001 (2018), the container must be refilled or replaced when the agent quantity loss exceeds what percentage?
2A technician checks the pressure gauge on a superpressurized FK-5-1-12 container during the semiannual quantity and pressure check. After adjusting the reading for ambient temperature, the container must be refilled or replaced when the pressure loss exceeds what value?
3For an IG-541 inert gas system, agent quantity is verified by pressure because the agent is stored as a compressed gas. Per NFPA 2001 (2018), an inert gas container must be refilled or replaced when the temperature-adjusted pressure loss exceeds what percentage?
4Per NFPA 12 (2018), high-pressure carbon dioxide cylinders are weighed at least semiannually. A cylinder must be refilled or replaced when it shows a loss in net agent content of more than what percentage?
5How often does NFPA 2001 (2018) require the agent quantity and pressure of refillable clean agent containers to be checked?
6Per NFPA 2001 (2018), system discharge hoses must be hydrostatically tested at what interval?
7A discharged clean agent cylinder arrives at the shop for recharge. The DOT requalification date stamped on the cylinder is 6 years old. What must happen before the cylinder is recharged?
8High-pressure CO2 cylinders that have remained connected in continuous service without being discharged may, per NFPA 12 and CGA C-6 practice, be given what in place of an immediate hydrostatic retest at the 5-year point?
9Which publication provides the industry standard procedures for the visual inspection of steel compressed gas cylinders, including criteria for corrosion, dents, cuts, and fire damage?
10Per NFPA 2001 (2018), how often must the enclosure protected by a total flooding clean agent system be examined for new penetrations or other changes that could affect agent leakage?
About the NICET Special Hazards Level I Exam
NICET Special Hazards Systems Level I is the entry-level certification for technicians who work on clean agent (FK-5-1-12, HFC-227ea, inert gas) and carbon dioxide fire suppression systems under direct supervision. The current computer-based exam has 83 multiple-choice questions in 140 minutes and is open book: candidates may bring bound copies of NFPA 12 (2018), NFPA 70 (2020), NFPA 72 (2019), and NFPA 2001 (2018). The heaviest domain is Inspection, Testing, and Maintenance at 43-49% of the exam, followed by Installation at 22-28%. Full certification also requires a work history documenting about 6 months of special hazards experience. NICET is updating all SHS exams for Fall 2026, when Level I grows to 91 questions referencing 2022 code editions with on-screen searchable PDFs.
Questions
83 scored questions
Time Limit
140 minutes
Passing Score
Pass/fail; NICET sets a criterion-referenced passing point (no published percentage)
Exam Fee
$230 (National Institute for Certification in Engineering Technologies (NICET); exams delivered at Pearson VUE test centers)
NICET Special Hazards Level I Exam Content Outline
Inspection, Testing, and Maintenance
Identifying clean agent, inert gas, and CO2 systems and their components; semiannual container checks with the more-than-5% agent / more-than-10% pressure halocarbon thresholds and 5% inert gas pressure threshold; NFPA 12's 10% CO2 weight-loss rule; cylinder and discharge hose inspection per CGA C-6 with 5-year hose hydrostatic tests; DOT requalification stamps; 12-month enclosure examinations and door fan testing; safe detector activation with releasing disabled; and piping, hanger, and nozzle inspections
Installation
Reading shop drawings and scales (1/4 in. = 1 ft), installing EMT per NEC 358 (secured within 3 ft of boxes, 10 ft intervals, 360-degree bends maximum, 40% conduit fill), selecting FPL/FPLR/FPLP cable per Article 760, steel discharge piping with correct thread sealant practice, reaming and blowing out pipe before nozzles, hangers anchored to structure near nozzles, air sampling pipe per manufacturer design, and mounting containers and manual stations at 42-48 in.
System Design and Configuration
Deriving installation information from architectural plans, sections, and project specifications; basic electricity (Ohm's law, series resistance, units, components); Class A vs Class B circuit behavior; cross-zoned detection logic; pre-engineered vs engineered systems; the 1.2 safety factor for Class A minimum design concentration in NFPA 2001; and the purposes of codes, standards, specifications, listings, and the AHJ
Safety
CO2 total flooding lethality at 34%+ concentrations with predischarge alarms, time delays, wintergreen odorizer, and lockout valves per NFPA 12 (2018); inert gas oxygen reduction to roughly 12%; NOAEL limits for occupied halocarbon spaces; cylinder handling with caps and anti-recoil devices; and OSHA 1910/1926 essentials - lockout/tagout, 6 ft construction fall protection, the 4:1 ladder rule, GFCI protection, Z87.1 eye protection, and the 90 dBA noise PEL
Repair and Recharge
Replacing damaged conductors with matching listed wire and accessible listed splices; functionally verifying restored supervision after repairs; replacing solenoids, hoses, and mechanical components only with listed compatible parts; recharge rules requiring trained personnel, manufacturer fill specifications, and hydrostatic retest of cylinders more than 5 years past their test date; and restoring and documenting the system after impairment
How to Pass the NICET Special Hazards Level I Exam
What You Need to Know
- Passing score: Pass/fail; NICET sets a criterion-referenced passing point (no published percentage)
- Exam length: 83 questions
- Time limit: 140 minutes
- Exam fee: $230
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
NICET Special Hazards Level I Study Tips from Top Performers
Frequently Asked Questions
How many questions are on the NICET Special Hazards Level I exam?
The current exam has 83 multiple-choice questions with a 140-minute time limit, delivered by computer at Pearson VUE test centers. NICET is releasing updated SHS exams in Fall 2026, when Level I grows to 91 questions based on 2022 code editions.
Is the NICET SHS Level I exam open book?
Yes. Candidates may bring bound or three-ring-bound copies of the four listed references: NFPA 12 (2018), NFPA 70 (2020), NFPA 72 (2019), and NFPA 2001 (2018). Tabs must be permanently attached and handwritten notes are not permitted. Starting Fall 2026, the references will also be available as searchable PDFs on screen.
What topics make up most of the Level I exam?
Inspection, Testing, and Maintenance is the largest domain at 43-49% of questions - container quantity and pressure checks, cylinder and hose inspection, enclosure examination, and detector testing. Installation follows at 22-28%, with System Design and Configuration at 11-17%, Safety at 11-17%, and Repair and Recharge at 6-12%.
How much does the NICET Special Hazards Level I exam cost?
The exam fee is $230, paid to NICET when you schedule. Certification also requires submitting a work history documenting your special hazards experience; Level I technicians typically have at least 6 months in the field.
What experience do I need for NICET SHS Level I certification?
Level I is the Technician Trainee tier. NICET expects roughly 6 months of special hazards systems experience working under the direct supervision of a qualified technician - identifying wiring and devices, reading drawings, measuring quantities, and mounting or removing devices and piping.
What code editions should I study for the current exam?
The current exam is written to NFPA 12 (2018), NFPA 70 (2020), NFPA 72 (2019), and NFPA 2001 (2018). Helpful preparation references that are NOT allowed in the test center include CGA C-6, the FSSA Pipe Design Handbook, NFPA 1, NFPA 170, OSHA 29 CFR 1910/1926, and Ugly's Electrical References. The Fall 2026 exam update moves to 2022 editions.
How long is NICET certification valid?
NICET certification is maintained on a 3-year recertification cycle through Continuing Professional Development (CPD) requirements and renewal fees.