,1. Which NFPA 1123 rule governs mortar placement relative to audience when using
3-inch shells?
A. Minimum separation distance is 70 feet per inch of shell diameter.
B. Minimum separation distance is 100 feet for any shell diameter.
C. Minimum separation distance is 70 feet for 3-inch shells, scaled linearly.
D. Minimum separation distance is 40 feet per inch of shell diameter.
Answer: A. Minimum separation distance is 70 feet per inch of shell diameter.
NFPA 1123 (2022) Table 6.3.1 specifies a minimum separation distance of 70 feet per
inch of shell diameter for mortars, so a 3-inch shell requires 210 feet. Options B and D
are incorrect fixed or lower values; C misstates the linear scaling rule.
2. A display site has a 5,000 ft² fallout area. What is the maximum total weight of
pyrotechnic composition allowed?
A. 50 lb
B. 100 lb
C. 200 lb
D. 500 lb
Answer: A. 50 lb
NFPA 1123 limits the total pyrotechnic composition in the fallout area to 10 lb per 1,000
ft², so 5,000 ft² allows 50 lb. Options B, C, and D exceed this density limit and would
violate the code.
3. Which DOT hazard class is assigned to Division 1.3G fireworks for
transportation?
A. Class 1, Division 1.1
B. Class 1, Division 1.3
C. Class 1, Division 1.4
D. Class 3, Division 1.3
Answer: B. Class 1, Division 1.3
Under 49 CFR 173.50, Division 1.3G covers fireworks that have a fire hazard and
either a minor blast or minor projection hazard, or both. Division 1.1 is mass explosion
hazard; 1.4 is minor explosion hazard; Class 3 is flammable liquids.
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,4. When storing 1.3G and 1.4G fireworks together, which compatibility table rule
applies under NFPA 1124?
A. They may be stored together without segregation.
B. They must be separated by a 4-hour fire-rated wall.
C. They must be separated by a minimum of 25 feet or a barricade.
D. They must be stored in separate magazines at all times.
Answer: C. They must be separated by a minimum of 25 feet or a barricade.
NFPA 1124 Table 7.3.2 requires a minimum 25-foot separation or an approved
barricade between 1.3G and 1.4G materials unless stored in separate approved
magazines. Options A and D are too permissive or too strict; B is not the specified
requirement.
5. During setup, a continuity check on an electric match shows 0.5 ohms. What is the
most likely cause?
A. Open circuit in the match
B. Short circuit in the match
C. Normal resistance for an electric match
D. High resistance due to corrosion
Answer: B. Short circuit in the match
A typical electric match has a resistance of about 1.0-1.5 ohms; 0.5 ohms indicates a
short circuit, which could cause a misfire or premature ignition. Open circuit would
show infinite resistance; normal resistance is higher; corrosion would increase
resistance.
6. Which federal regulation requires a license or permit to purchase display
fireworks?
A. OSHA 29 CFR 1910.109
B. ATF 27 CFR Part 555
C. DOT 49 CFR 172
D. NFPA 1123
Answer: B. ATF 27 CFR Part 555
ATF 27 CFR Part 555 implements the Federal Explosives Law, requiring a federal
explosives license or permit to acquire display fireworks. OSHA governs workplace
safety; DOT governs transportation; NFPA is a consensus standard, not a federal
regulation.
Page 3
, 7. A misfire occurs during a display. What is the minimum safe wait time before
approaching?
A. 5 minutes
B. 10 minutes
C. 15 minutes
D. 30 minutes
Answer: D. 30 minutes
NFPA 1123 (2022) 8.5.1 requires a minimum 30-minute wait before approaching a
misfired mortar or device to allow for possible delayed ignition. Shorter times (5, 10, 15
minutes) are insufficient and unsafe.
8. Which environmental condition most critically affects fallout area calculation for
outdoor displays?
A. Ambient temperature
B. Wind speed and direction
C. Relative humidity
D. Barometric pressure
Answer: B. Wind speed and direction
NFPA 1123 requires fallout area to be adjusted for wind speed and direction to prevent
debris from reaching spectators. Temperature, humidity, and pressure have minor
effects but are not the primary factors for fallout drift.
9. What is the maximum net explosive weight (NEW) allowed for a 1.4G consumer
fireworks storage in a Type 4 magazine?
A. 50 lb
B. 100 lb
C. 500 lb
D. No limit if in original packaging
Answer: C. 500 lb
NFPA 1124 Table 9.3.1 limits Type 4 magazines to 500 lb NEW for 1.4G fireworks.
Options A and B are lower than allowed; D is incorrect because limits apply regardless
of packaging.
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3-inch shells?
A. Minimum separation distance is 70 feet per inch of shell diameter.
B. Minimum separation distance is 100 feet for any shell diameter.
C. Minimum separation distance is 70 feet for 3-inch shells, scaled linearly.
D. Minimum separation distance is 40 feet per inch of shell diameter.
Answer: A. Minimum separation distance is 70 feet per inch of shell diameter.
NFPA 1123 (2022) Table 6.3.1 specifies a minimum separation distance of 70 feet per
inch of shell diameter for mortars, so a 3-inch shell requires 210 feet. Options B and D
are incorrect fixed or lower values; C misstates the linear scaling rule.
2. A display site has a 5,000 ft² fallout area. What is the maximum total weight of
pyrotechnic composition allowed?
A. 50 lb
B. 100 lb
C. 200 lb
D. 500 lb
Answer: A. 50 lb
NFPA 1123 limits the total pyrotechnic composition in the fallout area to 10 lb per 1,000
ft², so 5,000 ft² allows 50 lb. Options B, C, and D exceed this density limit and would
violate the code.
3. Which DOT hazard class is assigned to Division 1.3G fireworks for
transportation?
A. Class 1, Division 1.1
B. Class 1, Division 1.3
C. Class 1, Division 1.4
D. Class 3, Division 1.3
Answer: B. Class 1, Division 1.3
Under 49 CFR 173.50, Division 1.3G covers fireworks that have a fire hazard and
either a minor blast or minor projection hazard, or both. Division 1.1 is mass explosion
hazard; 1.4 is minor explosion hazard; Class 3 is flammable liquids.
Page 2
,4. When storing 1.3G and 1.4G fireworks together, which compatibility table rule
applies under NFPA 1124?
A. They may be stored together without segregation.
B. They must be separated by a 4-hour fire-rated wall.
C. They must be separated by a minimum of 25 feet or a barricade.
D. They must be stored in separate magazines at all times.
Answer: C. They must be separated by a minimum of 25 feet or a barricade.
NFPA 1124 Table 7.3.2 requires a minimum 25-foot separation or an approved
barricade between 1.3G and 1.4G materials unless stored in separate approved
magazines. Options A and D are too permissive or too strict; B is not the specified
requirement.
5. During setup, a continuity check on an electric match shows 0.5 ohms. What is the
most likely cause?
A. Open circuit in the match
B. Short circuit in the match
C. Normal resistance for an electric match
D. High resistance due to corrosion
Answer: B. Short circuit in the match
A typical electric match has a resistance of about 1.0-1.5 ohms; 0.5 ohms indicates a
short circuit, which could cause a misfire or premature ignition. Open circuit would
show infinite resistance; normal resistance is higher; corrosion would increase
resistance.
6. Which federal regulation requires a license or permit to purchase display
fireworks?
A. OSHA 29 CFR 1910.109
B. ATF 27 CFR Part 555
C. DOT 49 CFR 172
D. NFPA 1123
Answer: B. ATF 27 CFR Part 555
ATF 27 CFR Part 555 implements the Federal Explosives Law, requiring a federal
explosives license or permit to acquire display fireworks. OSHA governs workplace
safety; DOT governs transportation; NFPA is a consensus standard, not a federal
regulation.
Page 3
, 7. A misfire occurs during a display. What is the minimum safe wait time before
approaching?
A. 5 minutes
B. 10 minutes
C. 15 minutes
D. 30 minutes
Answer: D. 30 minutes
NFPA 1123 (2022) 8.5.1 requires a minimum 30-minute wait before approaching a
misfired mortar or device to allow for possible delayed ignition. Shorter times (5, 10, 15
minutes) are insufficient and unsafe.
8. Which environmental condition most critically affects fallout area calculation for
outdoor displays?
A. Ambient temperature
B. Wind speed and direction
C. Relative humidity
D. Barometric pressure
Answer: B. Wind speed and direction
NFPA 1123 requires fallout area to be adjusted for wind speed and direction to prevent
debris from reaching spectators. Temperature, humidity, and pressure have minor
effects but are not the primary factors for fallout drift.
9. What is the maximum net explosive weight (NEW) allowed for a 1.4G consumer
fireworks storage in a Type 4 magazine?
A. 50 lb
B. 100 lb
C. 500 lb
D. No limit if in original packaging
Answer: C. 500 lb
NFPA 1124 Table 9.3.1 limits Type 4 magazines to 500 lb NEW for 1.4G fireworks.
Options A and B are lower than allowed; D is incorrect because limits apply regardless
of packaging.
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