2017 Safety Engineer "Case Analysis" Mock Questions and Answers
Case 1:
A movable conveyor belt is used to transfer materials in the wood processing workshop of a furniture factory. Movable conveyor belt drive motor using 380V three-core cable power supply, its iron control box at the entrance of the cable with cloth winding fixed. Because the control box is often moved with the conveyor belt, the operator only installed a bolt for convenience. The control box has no leakage protection device.
The dust concentration in the wood processing workshop exceeds the standard all year round. 15:20 on May 21, 2009, due to the accumulation of wood in the workshop, affecting the normal work of the conveyor belt, the operator did not take any protective measures to move the conveyor belt with electricity. In the process of moving, the three-core cable was loose and fell off, and the energized cable contacted the shell of the control box, which led to the electrocution of one employee. On-site employees did not cut off the power supply in a hurry to pull the three-core cable, triggering a short-circuit cable fire, dust explosion occurred.
The accident caused two people died on the spot, one seriously injured. The seriously injured person died after 34d rescue. The accident caused part of the wood processing workshop plant collapsed, the whole plant stopped production, direct economic losses of more than 800 million yuan.
According to the above scenario:
The direct economic loss of the accident does not include ( )
A. Medical expenses
B. Cost of loss of business shutdown
C. Accidental fines
D. Clean up the scene costs
E. Funeral and compassionate costs
Correct Answer: B
2. According to the Regulations on the Reporting and Investigation of Production Safety Accidents (State Council Decree No. 493), the accident belongs to the category of ( )
A. General Accident
B. Large Accident
C. Extraordinary Accident
D. Significant Accident
E. Particularly Significant Accident
ANSWER: A
3, The occupational disease that may be caused by the long-term exposure of workers to the dust in the wood processing workshop of factory B is ( )
A. pneumoconiosis
B. benzene poisoning
C. anthrax
D. occupational asthma
E. formaldehyde poisoning
Answer: A
4. The following measures are useful in solving the problem of the dust concentration exceeding the standard all the year round in the wood processing workshop The following measures are effective in solving the problem of dust concentration exceeding the standard all the time in the wood processing workshop, including ( )
A. Measures to seal the dust-producing equipment
B. Measures to inert dust
C. Measures to remove dust and purify
D. Measures to ventilate and purify
E. Measures to prevent electrostatic discharge
Answer: A C D
5. In the process of moving the conveyor belt, techniques that can be For the prevention of personnel indirect electric shock technical measures are ( )
A. Installation of leakage protection devices
B. Installation of electromagnetic shielding
C. The use of TT system
D. Installation of mechanical interlocking
E. The use of protection zero system
Answer: A C E
Case study of indeterminate multiple-choice questions
6, for the B plant dust explosion risk know, the following statements are correct ( )
A. The higher the dust dispersion, the more likely to explode
B. The higher the concentration of dust, the greater the risk of explosion
C. The higher the oxygen content, the greater the intensity of the explosion
D. D. The higher the temperature of the dust, the greater the risk of explosion
E. The higher the humidity, the greater the risk of explosion
E. The higher the temperature, the greater the risk of explosion
E. The higher the humidity, the greater the risk of explosion
E. The higher the humidity, the greater the risk of explosion
E. The higher the dust humidity, the greater the risk of explosion
Answer: A B C D
7, in the accident investigation and handling work should adhere to the principle of ( )
A. Priority protection of the rights and interests of migrant workers principle
B.? The principle of "four don't let go?
C. The principle of fairness and openness
D. The principle that the interests of the enterprise are paramount
E. The principle of seeking truth from facts and respecting science
Answer: B C E
8. The accident exposed the problems that existed in the day-to-day safety management of Factory B.
A. Inadequate safety training and education
B. Failure of safety checks
B. Safety inspections are not in place
C. Labor protective equipment is unqualified
D. Explosion-proof motors are not used
E. Job responsibility system is not sound
Answer: A B E
Case 2:
A factory for employee safety education, by the competent production safety The factory director A systematically explained the safety management policy and the principles of production safety management, accident causation theory, accident prevention principles and basic principles. A said that the so-called system is an organic whole composed of several parts that interact and depend on each other. A further says that the so-called theory of accidental release of energy is ? The cause of human injury can only be some kind of energy transfer? , energy countercurrent effect on the human body causing injury can be divided into two categories: the first type of injury is due to the imposition of more than the threshold of local or systemic damage caused by energy; the second type of injury is caused by the impact of local or systemic energy exchange. Under certain conditions, the ability of a certain form of energy to produce injuries and injuries caused by accidents and the severity of the injury depends on the size of the energy, the degree of concentration of energy, exposure to energy parts of the human body, exposure to energy duration and frequency, as well as the type of energy. Based on the above, answer the following questions.
Single choice questions:
The following statements are correct (B).
A. China's production safety management policy is: ? Safety first, prevention first, people-oriented.?
B. China's production safety management, adhere to? Safety first, prevention first? The policy. The so-called? Safety first? , that is, in the production and management activities, we should always put safety in the first place, giving priority to the personal safety of employees and other personnel
C. The so-called? Prevention first?
D. The so-called? People-oriented? , is to carry out production activities in accordance with the will of individuals to ensure the safety of the production process
Multiple choice questions:
l. According to A's explanation of the system, the following statements are correct (A, C).
A. The whole plant is a system
B. A shift in the plant cannot be a system
C. The production process of the whole plant constitutes a system
D. A part of the production process of the whole plant cannot constitute a system
2. According to the theory of unintended release of energy, the following statements are correct (B, C).
A. Poisoning belongs to the first category of injuries
B. Poisoning belongs to the second category of injuries
C. All other things being equal, the longer the energy acts on the human body, the more serious the injuries to the human body are
D. All other things being equal, the shorter the energy acts on the human body, the more serious the injuries to the human body are
Related Knowledge:
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1. The Work Safety Law puts ? Safety first, prevention first? stipulated as the basic policy of China's work safety. The so-called? Safety first? , that is, in the production and management activities, in dealing with safety and the realization of the production and management activities of other objectives of the relationship, we should always put the safety, especially practitioners and other personnel 's personal safety in the first place, the implementation of the safety priority? Safety first? The principle of "safety first". The so-called? Prevention first? , that is, the management of production safety, mainly in the occurrence of accidents before taking control measures, prevention, nip accidents in the bud.
2. System refers to a number of interconnected, in order to achieve a certain goal and has an independent function of the elements of the organic whole. For the production system, the system consists of six elements: personnel, material, equipment, funds, task indicators and information.
3. The so-called people-oriented, its basic meaning is briefly: it is a kind of people in the social and historical development of the main role and status of the affirmation, emphasizing the subjective role of people in social and historical development and the status of the purpose; it is a kind of value orientation, emphasizing the respect for people, emancipation of people, relying on people and for the sake of the people; it is a kind of way of thinking, that is, in analyzing and solving all the problems, we must adhere to the historical yardstick, also to adhere to the It is a way of thinking that in analyzing and solving all problems, it is necessary to adhere to both the scale of history and the scale of man.
4. The theory of accidental release of energy
Accidents are an abnormal or unwanted release of energy, and various forms of energy are the direct cause of the injuries they constitute. Therefore, injuries should be prevented by controlling the energy or controlling the energy carriers that are the medium through which the energy reaches the human body.
? The cause of human injury can only be some kind of energy transfer?
Under certain conditions, the ability of a certain form of energy to produce injuries and fatalities caused by accidents depends on the size of the energy, the duration and frequency of exposure to energy and the degree of concentration of force. According to the theory of accidental release of energy, a variety of shielding can be utilized to prevent accidental energy transfer, thereby preventing accidents from occurring.
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