20 18 case analysis of first-class fire engineer: real questions and answers

20 18 case analysis of first-class fire engineer: real questions and answers to the first question

A high-rise public building in North China has seven floors above ground and three floors underground, with a building height of 35m and a total construction area of 70345m2. The external wall of the building is a glass curtain wall, in which the underground building area is 28934m2, and the first floor is 6m high, which is the warehouse supermarket (with a cargo height of 3.5m), fire control room and equipment room. The second and third floors underground are 3.9m high, which are garages and equipment rooms, with 324 designed parking spaces. The middle building area above ground is 4 14 1 1m2, and the height of each floor is 5m. The first to fifth floors are shopping malls, and the sixth to seventh floors are places for dining, fitness and leisure. The roof is equipped with a fire water tank and a pressure stabilizing pump, and the ground between the water tanks is 0.45 meters higher than the roof.

The building water supply is 1 pipe, DN 150 is introduced from the municipal water supply branch pipe, and this plot forms an annular pipe network. There are three municipal hydrants within the range of 5 ~ 150 m of foreign aid around the building, and the pressure of the municipal water supply pipe is 0.25MPa The flow rate of each municipal hydrant is designed as 10L/s, and the municipal water supply in case of fire is not considered for fire storage. There is a fire pool and a fire pump room in the basement. Indoor and outdoor fire hydrant systems are equipped with fire pools respectively, and DN309 pipeline circulation is adopted. The effective depth of the pool is 3m, and the lift of the indoor hydrant pump is 84m. Indoor and outdoor fire hydrant systems all adopt ring pipe network.

According to the records of building property management, the automatic frequency of the pressure stabilizing pump is 20 times/h.

1. Among the following design schemes of fire water supply and fire hydrant system in this building, () meets the specification requirements.

election

A indoor and outdoor fire hydrant systems share the fire pool.

B, indoor fire hydrant system adopts temporary high-pressure fire water supply system, which is stabilized by high-level water tank.

C. Indoor and outdoor fire hydrant system * * * * About pipe network system

D indoor fire hydrant system is equipped with air pressure tank, and there is no water hammer elimination facility.

E. Indoor fire hydrant system adopts temporary high-pressure fire water supply system with stabilized pressure pump.

Answer BCE

2. In the following design scheme of indoor fire hydrant in this building, the correct one is ().

election

A. The dynamic pressure of the hydrant socket should not be less than 0.24MPa, and the retry water column of the fire hose should be calculated as 13m.

B * * * * Set indoor fire hydrant in the fire elevator room.

C The minimum protection radius of indoor fire hydrants is 29.23m, and the distance between fire hydrants is not more than 30m.

D. indoor fire hydrants adopt pressure-reducing and pressure-stabilizing fire hydrants.

E the roof test fire hydrant is located in the water tank room.

Answer ACD

3. The following indoor fire hydrant system design scheme, does not conform to the relevant specifications are ().

election

A. indoor fire hydrant system adopts water supply partition.

B a low-voltage switch is arranged on the outlet pipe of the indoor hydrant water pump.

C. centrifugal pumps are used for fire fighting.

D each fire pump is equipped with a set of flow and pressure testing device in the fire pump room.

E fire pump adapters are arranged along the curtain wall.

Answer BCE

4. In the following design scheme of water supply facilities for this building, the correct one is ().

A heating and antifreezing measures should be taken between high-level fire water tanks, and the indoor temperature should be designed as 10℃.

B. the high-level fire water tank is made of reinforced concrete.

C. The design effective volume of high-level fire water tank is 50m3.

D. Signal valve of valves on inlet and outlet pipes of high-level fire water tank.

E. Set the high water tank option between roof water tanks.

A.A

B.B

C.C

D.D

E.E

Answer ACE

Stable pump flow is 0.5l/s.

5. The following fire hydrant pump control design scheme of the building, does not conform to the relevant specifications are ().

election

A the fire pump is directly and automatically controlled by the flow switch signal on the outlet pipe of the high-level water tank.

B. In case of fire, the fire pump will be started directly at power frequency, and the fire pump will keep running at power frequency.

C the fire pump is directly and automatically controlled by the pressure switch signal of the alarm valve.

D. The fire pump shall be provided with the start-stop control button of the protection device locally.

E. the fire hydrant button signal directly starts the fire pump.

Answer CEA

6. Determine the main technical parameters of building fire pump, the factors that should be considered are ().

election

A. Design process of indoor fire hydrant

B. Diameter of indoor fire hydrant

C. Anti-seismic technical measures for fire pumps

D. fire pump control mode

E. Test the wine label with 3 heights and the water level elevation of the fire pool.

Answer BD

7. Title According to the Regulations on Fire Safety Management of Organs, Organizations, Enterprises and Institutions (Decree No.6 1 of the Ministry of Public Security), enterprises should conduct fire training for each employee, and the training content should include ().

election

A. Fire laws and regulations, fire safety system and fire safety operation procedures

B. Fire risk and fire prevention measures of food production enterprises

C. How to use fire hydrants

D. Early fire alarm, fire fighting and fire escape skills

E. Manufacturing principle of fire extinguisher

8. Title According to the Regulations on Safety Management of Organs, Organizations, Enterprises and Institutions (Order No.6 1 of the Ministry of Public Security), the general manager of an enterprise shall perform the following fire safety duties: ().

election

A approve the implementation of fire safety system and operating procedures to ensure fire safety.

B draw up the capital investment for fire safety work and report it to the board of directors for approval.

C. instruct the fire safety manager of this enterprise to conduct fire inspection.

D organize the formulation of fire fighting and emergency evacuation plans and implement drills.

E, overall arrangement of the production, operation, management and fire control work of this unit.

Answer a

9. According to the Regulations on Fire Safety Management of Organs, Organizations, Enterprises and Institutions (Order No.61of the Ministry of Public Security), the statement about fire safety management of this enterprise is correct ().

election

A. the enterprise shall report to the local fire department.

B the general manager and deputy general manager of the enterprise shall be reported to the local fire department for modification.

C the general manager of the enterprise and the deputy general manager in charge of fire safety management shall report to the local fire department for the record.

D the enterprise's fire fighting and emergency evacuation plan shall be reported to the local fire department.

E. The enterprise shall eliminate the fire hazards ordered by the fire department to be rectified within a specified time limit, and inform the fire department of the rectification.

Answer a

the second question

The building height of a food processing workshop in an enterprise is 8.5m, with a building area of 2 130 m2, with a main building on the first floor and a local second floor. The workshop roof is made of steel structure, the roof panel is made of polyurethane sandwich color steel plate, and the exterior wall below 1.8m is made of polyester sandwich color steel plate. The building is equipped with indoor fire hydrant system. The floor where the workshop is located is a cooked food workshop with baking, cooking, precooling and other processes. The second floor is a shift dormitory, and the stainless steel smoke exhaust flue is arranged directly above the charcoal stove in the cooked food workshop. During the hot smoke barbecue, the light smoke flue is discharged from the roof by the smoke exhaust machine.

2017165438+1At about 6 o'clock on October 5, a fire broke out in the factory building. Zhao, the duty officer who first discovered the fire, was ready to call the police and was stopped by Wang, the workshop director who discovered the fire. Wang and Zhao used fire extinguishers to put out the fire, and found that after the fire extinguisher failed, they used indoor fire hydrants to put out the fire, but the hydrants were waterless. The fire is getting bigger and bigger. Wang and the field personnel evacuated from the workshop. After the evacuation, they first reported to the deputy general manager, and then called 1 19 to call the police. Because I was nervous, I didn't specify the specific location of the fire factory, and I didn't leave the name of the alarm person. After receiving the alarm from the masses, the fire department quickly arrived at the scene of the fire, and the fire was extinguished two hours later.

The fire area is about 900 square meters, causing five employees to die and four employees to be injured in the dormitory on duty, and the economic loss is about 6.5438+0.6 million yuan. Through investigation, on-site investigation and comprehensive analysis, it is concluded that the cause of the fire is that Wei Liu, a charcoal worker, accelerated the temperature rise of the charcoal stove, poured gasoline into the lit charcoal stove, and the flame chamber started instantly, which led to the oil in the smoke exhaust pipe catching fire and alerted the roof of the factory building.

Due to the polyurethane insulation layer of the steel plate, the fire spread rapidly. The survey also found that there were 156 workers in the workshop during the seasonal peak period. The general manager of the enterprise is the legal representative, and the deputy general manager is responsible for fire safety management. The defense department once ordered the shift dormitory to be moved out of the factory and the polyurethane color steel plate to be removed. The general manager of the enterprise refuses to implement that the enterprise has not established a fire control organization according to law, the fire control safety management system is not perfect, and the necessary fire control safety training has not been carried out for employees. Although the skyfire and emergency evacuation plans have been made, the smoke exhaust pipeline has never been organized for many years and has never been inspected and maintained.

According to the above materials, answer the following questions (*** 18, 2 points for each question, 2 or more options for each question meet the meaning of the question, and at least one item is wrong. Wrong choice. This question will not be scored: if you choose one less item, you will get 0.5 points for each item).

1. According to the Criminal Law of People's Republic of China (PRC) and the Fire Protection Law of People's Republic of China (PRC), the following solution to the parties is correct ().

election

A. charcoal worker Liu was found guilty of fire and sentenced to three years' imprisonment.

B. 500 yuan shall be fined for Zhao, the person on duty.

C, detention workshop director Wang 10 days, fined 500 yuan.

The general manager of this enterprise was guilty of fire accident and was sentenced to three years' imprisonment.

E the deputy general manager of this enterprise was guilty of fire accident and was sentenced to three years' imprisonment.

2. According to "People's Republic of China (PRC) Fire Law" and "Regulations on Fire Safety Management of Organs, Organizations, Enterprises and Institutions" (Order No.61of the Ministry of Public Security), the statement about enterprises is correct ().

election

A. the enterprise does not belong to the key unit of fire safety.

B. The enterprise belongs to the key unit of fire safety.

C. the general manager of the enterprise is responsible for fire safety.

The deputy general manager of this enterprise is the person in charge of fire safety.

E. The deputy general manager of this enterprise is the fire safety manager.

Answer BCE

3. On the fire disposal, the workshop director Wang violated the Fire Prevention Law of People's Republic of China (PRC) and the Safety Management Regulations of Organs, Organizations, Gold Industry and Institutions (Order No.61of the Ministry of Public Security).

election

A. when the fire was discovered, the people present did not evacuate in time.

B. Failing to call the police in time when a fire is discovered.

C. After leaving the site, report to the deputy general manager first, and then call 1 19 to call the police.

D. When calling the police, the location of the fire was not stated, and no name was left.

E. organize personnel to put out the fire, but failed to put it out.

4. Before the fire broke out, the major fire risk factors directly or comprehensively judged by the workshop were ().

election

A. the workshop is equipped with shift dormitory.

B. The shift dormitory adopts polyurethane foam metal sandwich panel.

C. Poor daily maintenance and management of fire control facilities, failure of fire extinguishers and waterless fire hydrants.

D. the smoke exhaust pipe has never been checked and cleaned.

E. there is no full-time enterprise fire brigade.

Answer ABCE

5. According to the "People's Republic of China (PRC) Fire Protection Law", the fire hydrant is waterless and the fire extinguisher fails, and the correct punishment is ().

election

A. be ordered to make corrections and be fined 5000 yuan.

B. be ordered to make corrections and be fined 3000 yuan.

C. be ordered to make corrections and be fined 4000 yuan.

D. be ordered to make corrections and be fined 50,000 yuan.

E. be ordered to make corrections and be fined 60,000 yuan.

6. Topic According to the Regulations on Fire Safety Management of Organs, Organizations, Enterprises and Institutions (Order No.61of the Ministry of Public Security), the organization should include () in the fire fighting and emergency evacuation plan formulated by the enterprise.

election

A. Evacuation Steering Group

B. Security protection and rescue team

C. Fire Action Team

D. material rescue team

E. communication contact group

7. Title According to the Regulations on Fire Safety Management of Organs, Organizations, Enterprises and Institutions (Decree No.6 1 of the Ministry of Public Security), enterprises should conduct fire training for each employee, and the training content should include ().

election

A. Fire laws and regulations, fire safety system and fire safety operation procedures

B. Fire risk and fire prevention measures of food production enterprises

C. How to use fire hydrants

D. Early fire alarm, fire fighting and fire escape skills

E. Manufacturing principle of fire extinguisher

Answer ABCD

8. Title According to the Regulations on Safety Management of Organs, Organizations, Enterprises and Institutions (Decree No.6 1 of the Ministry of Public Security), the general manager of an enterprise shall perform the following fire safety duties ().

election

A approve the implementation of fire safety system and operating procedures to ensure fire safety.

B draw up the capital investment for fire safety work and report it to the board of directors for approval.

C. instruct the fire safety manager of this enterprise to conduct fire inspection.

D organize the formulation of fire fighting and emergency evacuation plans and implement drills.

E, overall arrangement of the production, operation, management and fire control work of this unit.

Answer ade

9. According to the Regulations on Fire Safety Management of Organs, Organizations, Enterprises and Institutions (Order No.61of the Ministry of Public Security), the statement about fire safety management of this enterprise is correct ().

election

A. the enterprise shall report to the local fire department for the record.

B the general manager and deputy general manager of the enterprise shall be reported to the local fire department for the record.

C the general manager of the enterprise and the deputy general manager in charge of fire safety management shall report to the local fire department for the record.

D the enterprise's fire fighting and emergency evacuation plan shall be reported to the local fire department for the record.

E. The enterprise shall eliminate the fire hazards ordered by the fire department to be corrected within a specified time limit and report the situation to the fire department.

Answer communication

Third question

The fire technical service agency inspected the fire facilities of the elevated finished product warehouse of a company in Northeast China. The building height of the warehouse is 24m, and the building area is 4590m2. The stored items are finished products of single-layer machine coated white board paper. According to the owner's introduction, the dry automatic sprinkler system was installed in the warehouse, and then it was changed to the pre-action automatic sprinkler system started by the automatic fire alarm system and the pressure switch on the inflatable pipeline. The setting of high-level fire water tank, fire pool and fire water pump in the warehouse conforms to the current national fire protection technical standards. The test found that:

1. Under the roof of the warehouse, there is an early suppression and rapid response sprinkler, and a built-in sprinkler is set every 4m from the ground. The distance between the built-in sprinkler on the top shelf and the top of the stored goods is 385 meters.

2. After confirming that the fire alarm controller (linkage) and the fire pump control cabinet are in the automatic state, the inspectors trigger the fire detector in the protected area and manually open the test exhaust valve on the pre-action valve group. Only the fire alarm controller (linkage) sends out sound and light alarm signals, and other parts of the system and the fire pump do not act.

3. After the inspector closes the exhaust valve on the pre-action valve group, another fire detector, solenoid valve, exhaust valve, electric valve at the entrance, pressure switch of the alarm valve group and other components are triggered again; When the fire pump is started, the fire alarm controller (linkage type) normally receives the feedback signal.

4. 2 minutes after the fire alarm and linkage control signal is issued, check the terminal water testing device. First, only gas is discharged, and intermittent water flow occurs after 50 s.

According to the following materials, answer the following questions (***20 points)

1. Is the nozzle under the roof of this warehouse selected correctly? Briefly explain why.

2. Question: Is the nozzle setting of this warehouse shelf correct? Why?

3. Problem intervention: Is the actual opening mode of automatic sprinkler system consistent with that introduced by the owner? Is this opening method reasonable? Why?

4. What does the warehouse automatic sprinkler system need to detect besides the air pump?

5. 2 minutes after the fire alarm and linkage control signal is issued, check the terminal water testing device. First, only gas is discharged, and there is intermittent water flow after 50 s. What's the problem? Analyze the most likely reason.

The fourth question

The underground 1 floor, 6 floors above ground and 7 floors locally of a hospital ward building are flat roofs. The design elevation of the first floor is+/-0.000 m, the basement floor elevation is -4.200m, the outdoor floor elevation of the building is -0.600m ... The elevation of the sixth floor roof is 23.700m, the top elevation of the parapet is 24.800m, and the elevation of the seventh floor roof is 27.300m m. The floor plan of the ward building is as shown in the figure.

(missing picture)

The floor area of each floor below the sixth floor of the ward building is 1220m2. The basement on the east side of the 1 axis in the drawing covers an area of 560m2 and is equipped with an equipment room. On the south side of the middle walkway, the generator room, transformer room and power distribution room (using dry-type transformer) are arranged in turn from west to east, and the bicycle garage is arranged in the basement on the west side of axis 9. There are ward buildings from the first floor to the sixth floor on the ground. The doors of the fire water tank room, elevator machine room and basement monitoring room on the seventh floor (with a building area of 275m2) are all Class B fire doors, the stairs on the ground 1, the stairs 2 and the power distribution room doors are all Class B fire doors, and the room doors on other floors are all tempered glass doors. The clear width of M 1 door in this building is 3.4m, that of all single doors is 0.9m, and that of double doors is1.2m.

Ward building shall be equipped with indoor and outdoor fire hydrant system, wet automatic sprinkler system, automatic fire alarm system, smoke control system and fire extinguisher according to the specification requirements. The minimum horizontal illumination of the evacuation walkway and stairwell is 60Lx, and the power supply time is1.5h..

According to the above materials, answer the following questions (***24 points):

1. What is the building height of the ward building? According to the Code for Fire Protection Design of Buildings (G85025), which category does it belong to? How many fire zones should the basement be divided into? How to divide the above-ground fire zone? And explain why.

2. The topic points out the available safety exits of the classroom in the picture, and judges whether the evacuation distance of the emergency room meets the relevant requirements of the Code for Fire Protection Design of Buildings (GB500 16), and explains the reasons.

3. The topic points out the problems existing in the plane layout and fire separation of the basement and the first floor of the ward building, and gives the correct methods.

4. The topic points out the problems existing in the fire rescue facilities and the configuration of fire control facilities in this ward building, and gives the correct methods.

5. The problem of safe evacuation in the picture is pointed out, and the correct method is given.

The fifth question

A high-rise public building has 2 floors underground and 30 floors above ground. The basement is all garage and equipment room, the first to fourth floors above ground are shopping malls, and the fifth to thirtieth floors are office buildings. The atrium of the shopping mall runs through the first floor to the fourth floor, and the atrium corridor on the second floor to the fourth floor is equipped with fire shutters according to the requirements of the specification. Other parts are equipped with automatic fire alarm system, smoke prevention system, fire emergency lighting and evacuation indication system according to the specification requirements. Fire technical service institutions shall conduct annual inspection of the project, as follows

1. Function test of fire alarm controller (linkage type)

Fire fighting technical service: personnel remove the 1 smoke detector installed on the canopy of the fire control room, and the fire alarm controller (linkage type) displays fault information and makes fault sound within 50s. In addition, 1 smoke detector is selected for smoke test, and the fire alarm controller (linkage type) displays fire alarm information and fault alarm information of the detector within 50s, and switches to fire alarm sound.

2. Detection of linkage control function of fire shutter

The personnel of the fire technical service institution set the linkage control function to the automatic working mode. The alarm of two fire detectors was triggered on the first floor, and the fire shutter of the atrium cloister on the second to fourth floors descended to the floor: after reset, the alarm of two disaster detectors was triggered on the second floor, and the fire shutter of the atrium cloister on the second to fourth floors descended to 1.8m away from the building.

3. Detection of linkage control function of smoke exhaust system

The personnel of the fire technical service institution set the linkage control function to the automatic working mode, simulated and triggered two smoke detectors on the 28th floor, and the smoke exhaust fan started in linkage. On-site inspection showed that the smoke exhaust valve on this floor was not opened: the smoke exhaust valve on the 28th floor was manually started by the fire linkage controller, and the smoke exhaust valve was opened.

4. Functional detection of fire emergency lighting and evacuation indication system

The system consists of emergency lighting centralized controller, fire emergency lights and fire emergency lighting distribution box, and the lighting controller should show that it works normally. Five fire emergency lights were found to be damaged to varying degrees at the scene: the fire control room sent out emergency conversion linkage control signals of more than ten floors, and all the fire emergency lights of more than ten floors entered the emergency working state except the eleventh and twelfth floors.

5. Records of fire control room

The staff of the fire technical service agency checked the duty record of the fire control room and found that two smoke detectors in the underground garage had repeatedly reported to the police for half a year. However, after on-site verification, it was confirmed that there was no fire, which was a false alarm, and the duty officer reset it.

According to the above materials, answer the following questions (***20 points)

1. Is the fire alarm function normal when detecting the building fire alarm control (linkage type) function? What other contents should be included in the functional inspection of fire alarm controller (linkage type)?

2. Is the linkage control function of building fire shutter normal? Why?

3. Is the linkage control function of the smoke exhaust system in this building normal? Why?

4. What type of fire emergency lamps should be replaced for the five damaged fire emergency signs? What is the reason why the fire emergency lights on the eleventh and twelfth floors are not working?

5. What are the possible reasons for the false alarm of fire in the underground garage of this building? Is it correct for the personnel on duty to deal with the false alarm of fire? Why?

The sixth question

The printing workshop of reinforced concrete frame structure is 75m long and 75m wide, with two floors above ground, an underground construction area of 2000m2 and a side length of 75m. The workshop roof does not use fuel, and the combustion performance and fire resistance limit of other building components are shown in the table below.

Combustion performance and fire resistance limit of building components

Name of component: firewall, load-bearing wall beam, wall and floor of stairwell, load-bearing component of roof, two-layer partition non-load-bearing external wall of evacuation staircase and evacuation walkway, and room partition roof.

Combustion performance and fire resistance limit h incombustibility 3.00 incombustibility 2.00 incombustibility 1.50 incombustibility 1.00 incombustibility 0.75 incombustibility 0.25.

The first floor of the workshop is equipped with a coal-fired boiler room, a fire pump room, a fire pool, a power distribution room with a building area of 400 square meters, and a paper warehouse with a building area of 600 square meters. There are printing workshops on the first and second floors above ground, and an intermediate warehouse is set in the center of the workshop on the second floor to store water-based ink, solvent-based ink and organic solvents such as toluene, xylene, alcohol, ether, etc. which are not more than 1 day and night. The intermediate warehouse is separated from other parts by firewalls and Class A fire doors, with a building area of 280 square meters.

The four corners of the first floor are respectively provided with a part of closed stairwells with external windows and natural ventilation, and the stairwell doors adopt two-way spring doors that can block smoke and directly lead to the outdoor of the first floor. A 1 closed stairwell is set at both ends of the long axis of the basement, and the distance from any point in the waterproof pump room, boiler room and power distribution room to the closed stairwell is not more than 20m, 30m and 40m respectively. The door of the closed stairwell in the basement adopts fire door B, and the stairwell is separated from the workshop on the first floor by a fire partition wall, which leads directly to the outside through a walkway with a length of no more than 3m. A 300-meter-wide horizontal door is set in the center of each external wall of the first floor workshop.

The room is equipped with indoor and outdoor fire hydrant system and fire extinguisher, and the underground floor is equipped with automatic sprinkler system; The above-ground part of the workshop adopts external windows for natural smoke exhaust, and the underground equipment room, walkway and equipment warehouse are equipped with mechanical smoke exhaust facilities.

According to the above materials, answer the following questions (***20 points)

1. Determine the fire resistance rating of the factory building, and determine the fire risk of the second-floor intermediate warehouse, underground paper warehouse, boiler room, power distribution room and printing factory building in the factory building.

2. The problem points out that the plane layout and fire partition components of the factory building are not in line with the current national fire protection standards and norms, and gives the solutions.

3. Each floor of the workshop should be divided into at least several fire zones.

4. The problem points out the problems existing in the safe evacuation of buildings and puts forward the rectification measures.

5. What explosion-proof measures should be taken for the intermediate warehouse on the second floor?

?