PracticeVideosBlogFlashcardsEspañol
All Practice Exams

Free Practice Questions for Stručni ispit za vatrogasce s posebnim ovlastima i odgovornostima

Exam-style questions and explanations by OpenExamPrep.

✓ No registration✓ No credit card
100+ Questions
100% Free

Loading practice questions...

Exam Review

Key Facts: Stručni ispit za vatrogasce s posebnim ovlastima i odgovornostima Exam

5

Core statutory examination subjects across tactics, equipment, chemistry, and law

Pravilnik o programu i načinu polaganja stručnog ispita (NN 110/20), Prilog

2 to 4 hours

Time limit for the written examination paper prior to oral examination

Pravilnik o programu i načinu polaganja stručnog ispita, Art. 8(3)

€70.34

Official examination fee for the full professional firefighting examination

Hrvatska vatrogasna zajednica (HVZ), Naputak za prijavljivanje kandidata

€23.23

Official fee for supplementary examination (popravni ispit in 1 or 2 subjects)

Hrvatska vatrogasna zajednica (HVZ), Naputak za prijavljivanje kandidata

Written + Oral

Two-part exam structure: written paper ('zadovoljava') followed by oral examination ('položio')

Pravilnik o programu i načinu polaganja stručnog ispita, Art. 7

1 to 4 months

Statutory re-sit window for supplementary examination if failing 1 or 2 oral subjects

Pravilnik o programu i načinu polaganja stručnog ispita, Art. 10(2)

Not published

Fixed written item count and numerical passing percentage

Pravilnik o programu i načinu polaganja stručnog ispita (NN 110/20), Arts. 7–10

Art. 52

Firefighting Act article establishing the professional exam and certificate

Zakon o vatrogastvu (Narodne novine br. 125/19, 114/22, 155/23), Art. 52

This HVZ professional examination combines a two-to-four-hour written paper with oral examination in five subjects. The official item count and numerical pass threshold are not published; candidates must receive a satisfactory written grade and pass every oral subject.

Sample Stručni ispit za vatrogasce s posebnim ovlastima i odgovornostima Practice Questions

Try these sample questions to review concepts for the Stručni ispit za vatrogasce s posebnim ovlastima i odgovornostima exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1What is the standard internal diameter and primary tactical application of a Type B delivery fire hose (tlačna vatrogasna cijev B) in Croatian firefighting practice according to HRN / DIN standards?
A.75 mm; primarily used for water supply relay lines, hydrant connections, and supplying heavy foam branchpipes or portable monitors
B.52 mm; exclusively used by interior attack breathing apparatus teams in residential compartments
C.110 mm; exclusively used as a rigid suction hose for drafting water from open rivers
D.25 mm; exclusively used as a forestry hose reel line on light all-terrain vehicles
Explanation: In Croatian firefighting standards (HRN EN / DIN), Type B delivery hoses have an internal nominal diameter of 75 mm. They are the backbone of water supply relays, connections from hydrants to pump inlets, and feed lines to distributors (razdjelnice), heavy foam equipment, and master streams.
2Which coupling system is the standard type used for Croatian firefighting delivery hoses and compatible fittings?
A.Storz symmetrical quick-action quarter-turn hermaphroditic couplings
B.British Instantaneous female-and-male latch couplings
C.American National Standard NH threaded screw couplings
D.Guillemin symmetrical locking cam couplings
Explanation: Croatian fire services use the Storz system for standard delivery-hose connections. Storz couplings are symmetrical, so two couplings of the same nominal size connect by bringing the lugs together and turning, without a male/female pair. Specialized equipment may use adapters or other connections, so 'all fittings' would be too broad.
3What is the purpose of a water distributor (tlačna razdjelnica B-CBC) in deploying hose lines from a fire appliance?
A.To divide a single incoming 75 mm (B) delivery line into three outgoing lines (two 52 mm C lines and one 75 mm B line), each controlled by a separate shutoff valve
B.To combine three suction hoses into a single pressurized pump discharge line
C.To inject liquid foam concentrate directly into an underground municipal water main
D.To measure the electrical conductivity of water discharged on high-voltage transformers
Explanation: A B-CBC water distributor (razdjelnica) connects to the primary B-line from the pump and splits the flow into three individually valved discharges: left (C), middle (B), and right (C). This enables independent control of attack lines by the distributor operator (razdjelničar).
4How does an inline foam proportioner/inductor (međumješalica za pjenu Z-2 or Z-4) draw foam concentrate (pjenilo) into a pressurized water line?
A.By utilizing the Venturi effect: water flowing through a constriction creates a local pressure drop that siphons foam concentrate from a canister into the stream
B.By using an integrated electric brushless fuel pump driven by the vehicle alternator
C.By pressurizing the foam canister with compressed CO2 gas cartridges
D.By utilizing gravity feed from an elevated roof tower
Explanation: An inline foam inductor (međumješalica) operates on the Venturi principle. The restriction inside the proportioner increases water velocity, creating a local pressure reduction that draws liquid foam concentrate through a pick-up tube. The proportioning setting must match the particular concentrate, equipment, and manufacturer's instructions rather than an assumed universal percentage.
5What is cavitation (kavitacija) in a centrifugal fire pump (centrifugalna vatrogasna crpka), and what conditions typically induce it during drafting operations?
A.The formation and violent collapse of vapor bubbles on impeller vanes when inlet pressure drops below the saturation vapor pressure of water, caused by excessive suction lift or clogged strainer
B.The electrical short-circuiting of the pump casing when operating near high-voltage lines
C.The sudden thermal cracking of the pump casing when pumping water colder than 4°C
D.The intentional aeration of water to produce compressed air foam without additives
Explanation: Cavitation occurs when the suction pressure at the pump inlet drops below the vapor pressure of water, causing vapor cavities (bubbles) to form. As these bubbles pass into higher pressure areas on the impeller, they collapse implosively, causing severe pit erosion, noise, severe vibration, and loss of pump discharge.
6What is the primary tactical role of a navalno vozilo in a Croatian fire brigade?
A.It is a frontline attack appliance carrying a crew, pump, extinguishing media, hose and core protective/rescue equipment for initial intervention
B.It is primarily a high-capacity water carrier whose crew and pump functions are secondary
C.It is primarily an aerial appliance for work at height and elevated rescue
D.It is primarily a command-and-communications vehicle without attack equipment
Explanation: A navalno vozilo is configured for the initial tactical attack: it transports firefighters and combines a pump, extinguishing media, hose, breathing apparatus, and other equipment specified for its type. Exact crew, tank, pump, and tool configurations depend on the vehicle classification and technical documentation, so they should not be presented as one universal specification.
7Which specialized firefighting aircraft operated by the Croatian Air Force (HRZ) in cooperation with HVZ can scoop up to 6,137 liters of water in 12 seconds from the Adriatic Sea or freshwater lakes?
A.Canadair CL-415 (amphibious water bomber)
B.Air Tractor AT-802F (single-engine air tanker)
C.Mi-171Sh (transport helicopter with Bambi bucket)
D.Pilatus PC-9M (turboprop surveillance aircraft)
Explanation: Official Croatian Ministry of Defence information identifies the Canadair CL-415 as the amphibious firefighting aircraft capable of scooping up to 6,137 litres in 12 seconds. The Air Tractor is a different, smaller aircraft, while the helicopter uses an external bucket and the PC-9M is not a water bomber.
8A firefighter is equipped with an open-circuit compressed-air breathing apparatus (izolacijski aparat s komprimiranim zrakom) with a 6.8-liter cylinder charged to 300 bar. If the safety reserve alarm activates at 55 bar and the firefighter's average air consumption under heavy physical exertion is 40 L/min, what is the calculated available working duration before the safety reserve is reached?
A.Approximately 41 to 42 minutes
B.Approximately 15 minutes
C.Approximately 68 minutes
D.Approximately 90 minutes
Explanation: Calculation: Total cylinder capacity = 6.8 L × 300 bar = 2,040 liters. Safety reserve volume = 6.8 L × 55 bar = 374 liters. Available working air volume = 2,040 - 374 = 1,666 liters. At an air consumption rate of 40 L/min: Working duration = 1,666 L / 40 L/min = 41.65 minutes (approx. 41-42 minutes).
9What protection does a positive-pressure full-face breathing mask (nadtlačna maska) provide during interior structural firefighting compared with a negative-pressure facepiece?
A.Positive pressure maintains a slight continuous outward pressure inside the mask facepiece, preventing toxic gases and hot smoke from leaking inside if the seal shifts
B.It reduces breathing-gas consumption by closing the regulator during inhalation
C.It prevents inward leakage by drawing contaminated air through a particulate filter before it reaches the facepiece
D.It permits a loose facial seal because the facepiece is open to ambient air between breaths
Explanation: In positive-pressure (nadtlačni) breathing apparatus, the regulator maintains a pressure inside the facepiece slightly above ambient atmospheric pressure (around 3 to 4 mbar). If the facial seal is momentarily compromised by facial movements or perspiration, clean air flows outward, preventing inward leakage of lethal toxic gases like CO or HCN.
10Under the European fire classification used in Croatian practice (razredi požara prema HRN EN 2), what does Class F cover, and which listed extinguishing approach is appropriate?
A.Fires involving cooking oils and fats in cooking appliances; use an extinguisher specifically rated for Class F, commonly a wet-chemical agent that cools and forms a suppressing layer
B.Fires involving flammable gases; extinguished using dry chemical powder
C.Fires involving combustible metals such as magnesium and sodium; extinguished using dry sand or special flux powders
D.Fires involving energized electrical installations; extinguished using halon substitutes
Explanation: Under HRN EN 2, Class F covers fires involving cooking oils and fats in cooking appliances. The equipment chosen must carry the appropriate Class F rating. Wet-chemical Class F extinguishers are common because their discharge cools the oil and creates a suppressing surface layer; the classification itself should not be described as mandating one proprietary formulation.

About the Stručni ispit za vatrogasce s posebnim ovlastima i odgovornostima Exam

Stručni ispit za vatrogasce s posebnim ovlastima i odgovornostima is the Croatian statutory professional examination established by Article 52 of the Firefighting Act (Zakon o vatrogastvu, NN 125/19, 114/22, 155/23) and the examination regulation in NN 110/20. The Croatian Firefighting Association (Hrvatska vatrogasna zajednica — HVZ) organizes the examination before a commission appointed by the Chief Fire Commander. The regulation permits professional, volunteer, and industrial firefighters active or employed in a firefighting organization or legal entity to sit, and also addresses fire inspectors; the Act requires the certificate for posts designated as having special authorities and responsibilities. The assessment covers equipment, tactics, combustion and extinguishment, organization/fire-protection measures, and criminal/misdemeanor sanctions. A satisfactory written paper is followed by oral examination in all five subjects. This page provides independent English-language MCQ practice for those published topics.

Exam sponsor: Hrvatska vatrogasna zajednica (HVZ). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Written paper (2 to 4 hours) followed by oral examination across five subjects: (1) Firefighting equipment, apparatus, and devices; (2) Firefighting tactics; (3) Theory of combustion and extinguishment; (4) Fire service organisation and fire protection measures; and (5) Criminal and misdemeanor sanctions.

Time Limit

Written examination: 2 to 4 hours; oral examination: conducted on the same day

Passing Score

Written part graded 'zadovoljava'; oral part graded 'položio' in all 5 subjects. Failing 1 or 2 subjects allows a supplementary re-sit (popravni ispit); failing 3 or more subjects requires repeating the entire examination.

Exam / Certification Fees

€70.34 for the full examination; €23.23 for a supplementary re-sit (popravni ispit)

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

Subject 1; 20% of this local bank

Vatrogasna tehnika, uređaji i oprema

Fire detection and automatic alarms, portable fire extinguisher ratings and ratings criteria (A, B, C, D, F), suction and delivery hoses, branchpipes, foam proportioners, centrifugal fire pump operation and cavitation, firefighting vehicle types (navalna vozila, cisterne, autoljestve), aerial firefighting aircraft (Canadair CL-415, Air Tractor AT-802), compressed-air breathing apparatus, and hydraulic extrication tools.

Subject 2; 25% of this local bank

Vatrogasna taktika

Fire dynamics, flashover indicators, backdraft ventilation risks, structural attack methods (unutarnja navala, vanjska navala), water relay supply calculations (relejna dobava, pressure drop per 100 m), incident command structure (zapovijedanje intervencijom), high-rise and basement firefighting tactics, forest fire suppression, and hazardous materials response (ADR, UN hazard classes, explosive atmosphere limits).

Subject 3; 20% of this local bank

Teorija procesa gorenja i gašenja

Chemistry and physics of combustion: fire tetrahedron, lower and upper explosive limits (DGE/GGE), flash point, ignition point, pyrolysis of solid fuels, combustion gases and smoke toxicology (carbon monoxide, hydrogen cyanide), and extinguishing mechanisms: cooling (hlađenje vodom), smothering (gušenje), chemical chain inhibition (antikatalitičko djelovanje prahom), and starvation.

Subject 4; 20% of this local bank

Ustrojstvo vatrogastva i mjere zaštite od požara

Zakon o vatrogastvu (NN 125/19, 114/22, 155/23): status of HVZ as central state office, Chief Fire Commander powers, public professional units (JVP), voluntary fire companies (DVD), operational commanding powers during interventions (entry into property, evacuation, commandeering vehicles/water), fire risk assessments, and integration with Civil Protection.

Subject 5; 15% of this local bank

Kaznenopravne i prekršajne sankcije

Kazneni zakon offences involving generally dangerous acts (Article 215), public-utility devices (Article 216), workplace protective devices (Article 217), danger signs (Article 218), and aggravated consequences (Article 222), together with duties and misdemeanor liability under fire legislation.

Preparing for the Stručni ispit za vatrogasce s posebnim ovlastima i odgovornostima Exam

What You Need to Know

  • Passing score: Written part graded 'zadovoljava'; oral part graded 'položio' in all 5 subjects. Failing 1 or 2 subjects allows a supplementary re-sit (popravni ispit); failing 3 or more subjects requires repeating the entire examination.
  • Assessment: Written paper (2 to 4 hours) followed by oral examination across five subjects: (1) Firefighting equipment, apparatus, and devices; (2) Firefighting tactics; (3) Theory of combustion and extinguishment; (4) Fire service organisation and fire protection measures; and (5) Criminal and misdemeanor sanctions.
  • Time limit: Written examination: 2 to 4 hours; oral examination: conducted on the same day
  • Exam / certification fees: €70.34 for the full examination; €23.23 for a supplementary re-sit (popravni ispit) Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

Stručni ispit za vatrogasce s posebnim ovlastima i odgovornostima: Suggested Study Strategy

1Master relay water supply calculations: practice computing friction loss in delivery lines (Δp = λ · (Q² / d⁵) · L or standard hose friction loss tables) and determining required pump operating pressures and spacing for relay operations.
2Understand the fire tetrahedron and compartment-fire dynamics: distinguish flashover from backdraft, interpret changing heat, smoke-layer, airflow, and flame indicators together, and connect ventilation changes to fire-gas ignition risk.
3Learn extinguishing-agent suitability by fire class and limitation: water for ordinary Class A fuels, compatible foam systems for relevant Class B fuels, the correct type of dry powder for its rated classes, CO2 where its electrical and atmosphere hazards are controlled, and wet chemical for Class F cooking media. Use the installed agent's data for proportioning and application rates.
4Learn Article 92 of the Zakon o vatrogastvu: distinguish the intervention powers to enter a home for a direct serious danger, restrict access until police arrive, move endangered people or things, secure water, remove obstructing vehicles, and require capable bystanders to assist within their abilities.
5For aircraft and other equipment, study operating principles, limitations, and the current technical documentation used by your organization rather than memorizing unsupported universal capacities or timings.
6Review hazardous-material identification under ADR: distinguish the hazard-identification number from the four-digit UN number, recognize that repeated digits intensify a hazard, and treat an X prefix as a warning of dangerous reaction with water.
7In criminal law, study Articles 215–218 and 222 of Kazneni zakon: distinguish the base generally dangerous offence, interference with public-use and workplace protective devices, danger signs, negligent commission, and aggravated injury, damage, or death results.
8Review the hierarchy of Croatian firefighting: distinguish between public fire brigades (JVP — professional municipal/city institutions) and voluntary fire companies (DVD — non-profit associations with operational units), and the command authority of municipal, city, and county fire commanders (VZG, VZO, VZŽ).

Frequently Asked Questions

What is the Croatian Firefighter Professional Exam (Stručni ispit za vatrogasce s posebnim ovlastima i odgovornostima)?

It is the statutory professional examination established by Article 52 of the Zakon o vatrogastvu (NN 125/19, 114/22, 155/23) and regulated by the Pravilnik o programu i načinu polaganja stručnog ispita za vatrogasce s posebnim ovlastima i odgovornostima (NN 110/20). A certificate is required for firefighter posts that the Act designates as having special authorities and responsibilities.

Who is required to take this examination?

Article 2 of the examination regulation permits professional, volunteer, and industrial firefighters who are active or employed in a firefighting organization or legal entity to sit; fire inspectors also sit the examination. Separate Firefighting Act provisions determine which posts have special authorities and responsibilities and therefore require the certificate.

Who administers the examination?

The examination is organized and conducted directly by the Croatian Firefighting Association (Hrvatska vatrogasna zajednica — HVZ), which serves as the central state office for firefighting in Croatia. The examination commission is appointed by the Chief Fire Commander (Glavni vatrogasni zapovjednik).

What is the format and duration of the examination?

Under Articles 7 to 9 of the Pravilnik, the examination has a written part and an oral part on the same day. The commission sets written questions and tasks and allows between two and four hours. Only a candidate whose written paper is graded 'zadovoljava' proceeds to oral examination across the five subjects. No separate practical performance test, assignment, or case-study submission is prescribed, although the written paper may include applied tasks.

What subjects are covered on the exam?

The examination tests five statutory subjects: (1) Firefighting technique, devices and equipment; (2) Firefighting tactics; (3) Theory of combustion and extinguishment; (4) Fire service organisation and fire protection measures; and (5) Criminal and misdemeanor sanctions.

What are the passing criteria and rules for re-sits?

A candidate passes when the written paper is graded 'zadovoljava' and all five subjects in the oral exam are graded 'položio'. If a candidate fails one or two subjects in the oral exam, they may sit a supplementary examination (popravni ispit) in those subjects between 1 and 4 months later. If a candidate fails three or more subjects, they fail the entire exam and must repeat it in full between 4 and 6 months later.

What are the official examination fees?

Under HVZ instructions and Article 16 of the Pravilnik, the examination fee is €70.34 for the full examination (and for repeating the full exam), paid into the State Budget of the Republic of Croatia. The fee for sitting a supplementary exam (popravni ispit in 1 or 2 subjects) is €23.23. The fee is paid either by the candidate personally or by the employing firefighting organization or legal entity.

How does this practice bank relate to the official HVZ examination?

The official catalogue, regulation, and application materials reviewed for this page are published in Croatian; HVZ does not state an explicit permitted-language rule on the cited pages. The official assessment uses written questions/tasks and oral questioning, not a fixed MCQ paper. This independent English-language MCQ bank reviews published topics and preserves essential Croatian terms, but it is not an official translation, format simulation, or substitute for written calculation and oral practice.