A construction site plans to store and use kerosene equal to 1.5 times its designated quantity for only eight days at a location that is not a licensed hazardous-materials facility.
Under Japan's Fire Service Act, which procedure is most appropriate for carrying out this plan?
View explanation
The exception for keeping or handling at least a designated quantity outside a licensed facility is temporary storage or handling for no more than ten days with approval from the competent fire chief or fire station chief. The ten-day limit does not remove the approval requirement. Because this case does not propose a permanent facility, that approval should not be confused with facility-establishment permission. Basis: August 22, 2026.
Problem 2
Piping alterations have been completed at a hazardous-materials facility after alteration permission was obtained. No provisional-use approval covers the altered section.
When may use of the altered section begin?
View explanation
Alteration permission authorizes the work; it does not automatically authorize use after construction. As a rule, the competent authority must conduct a completion inspection and confirm compliance with the technical standards before use begins. A contractor's own inspection or a later periodic inspection cannot replace the statutory completion inspection. Basis: August 22, 2026.
Problem 3
Without changing a facility's location, structure, or equipment, the operator will increase water-insoluble Class III petroleum from 1,000 to 1,600 litres and Class IV petroleum from 3,000 to 4,200 litres. Their designated quantities are 2,000 and 6,000 litres, respectively.
Which combination of the resulting multiple and required procedure is correct?
View explanation
The new multiple is 1,600 ÷ 2,000 = 0.8 plus 4,200 ÷ 6,000 = 0.7, for a total of 1.5. When the name, quantity, or designated-quantity multiple changes without an alteration to the location, structure, or equipment, notification is due at least ten days before the change. The fractions are combined even though each amount is individually below its threshold. Basis: August 22, 2026.
Problem 4
At a licensed facility, an employee without a hazardous-materials license will handle gasoline.
Which arrangement permits this work under the Fire Service Act?
View explanation
For an unlicensed person to handle gasoline at a hazardous-materials facility, a Class A handler or Class B Category 4 handler authorized for gasoline must attend on site. Category 2 has the wrong scope, while a Class C handler may not supervise another person's handling. Telephone availability is not attendance. Basis: August 22, 2026.
Problem 5
A facility that handles only Category 4 materials must appoint a hazardous-materials safety supervisor.
Which candidate may legally be appointed as the safety supervisor?
View explanation
A safety supervisor must hold a Class A license or the relevant Class B category and have at least six months of practical hazardous-materials handling experience. The Category 4 holder with eight months meets both requirements. Three months is insufficient even with Class A; Category 2 has the wrong scope; and Class C is not eligible. Basis: August 22, 2026.
Problem 6
A vehicle will carry 100 litres of gasoline in metal transport containers on its cargo bed. Gasoline's designated quantity is 200 litres, and no other hazardous materials are loaded.
Which statement best describes the transportation rules under the Fire Service Act and related regulations?
View explanation
Transport-container and loading standards apply even below the designated quantity. The vehicle placard and suitable fire-extinguishing equipment are additional requirements when at least the designated quantity is transported. The threshold does not mean that smaller quantities may be transported without hazardous-materials safeguards. Basis: August 22, 2026.
Problem 7
Gasoline will be transferred in a mobile tank storage facility. The driver is not a hazardous-materials handler, but a Class B Category 4 handler can ride in the vehicle.
Which arrangement satisfies the Fire Service Act's personnel requirement for the transfer?
View explanation
During transfer by a mobile tank storage facility, a handler authorized for the material must ride in the vehicle and carry the hazardous-materials handler license. Keeping a copy at the office or attending only at departure is insufficient. Vehicle-driving qualifications and hazardous-materials handler requirements are separate. Basis: August 22, 2026.
Problem 8
Oil leaks from piping at a hazardous-materials facility and begins spreading across the floor. A safely operable shutoff valve and spill-control equipment are available, and several employees are present.
Which immediate response is most appropriate under the law?
View explanation
The owner, manager, or occupier must immediately take emergency measures such as stopping continued leakage, preventing spread, and removing the released material. A person who discovers the accident must also report it immediately to the fire station or another authority listed by law. Cause analysis or internal approval should not delay either duty. Basis: August 22, 2026.
Problem 9
At a facility subject to periodic inspection, management wants an unlicensed maintenance specialist who knows the equipment well to perform the inspection work.
Which combination reflects the general rules for supervision, frequency, and record retention?
View explanation
Periodic inspection is generally required at least once a year, and records are generally retained for three years. A hazardous-materials handler or facility safety officer may inspect; another person may also perform the work if a hazardous-materials handler attends. The work is neither restricted to the handler personally nor delegable to an unlicensed person working alone. Basis: August 22, 2026.
Problem 10
A licensed facility is not among the facilities that the Order subjects to periodic inspection. A routine check reveals equipment corrosion, but the manager decides that the facility may continue operating until the next government inspection because periodic inspection is not required.
Which legal assessment of the manager's decision is correct?
View explanation
The periodic-inspection duty applies to facilities designated by the Order, but a separate duty requires owners, managers, and occupiers to maintain a facility's location, structure, and equipment in compliance with the technical standards. Exclusion from periodic inspection therefore does not justify ignoring known corrosion. Basis: August 22, 2026.