1 purpose
This standard is formulated to improve occupational health and safety performance, identify important hazards and plan risk control measures. 2 scope
This standard specifies the methods, judgment standards and requirements of occupational health and safety risk assessment, and the determination of important hazards identified by the company. 3 reference documents
Responsibilities of Hazard Identification, Risk Assessment and Risk Control Planning Procedure 4
4. 1 The deputy general manager of the production company is responsible for maintaining and improving this standard; 4.2 The Company's Security Department is responsible for the centralized management and interpretation of this standard; 4.3 The occupational health and safety audit team is responsible for hazard assessment;
4.4 All departments and units/project departments shall participate in the implementation and operation of this standard. 5 workflow and evaluation criteria
5. 1 workflow of occupational health and safety risk assessment
A) All departments, units and project departments shall identify and evaluate hazards in all activities and processes of their own units according to the provisions of the Hazard Identification and Evaluation Procedure, form a list of hazards, risk assessment records and a list of important hazards, and submit them to the company's security department;
B) The Security Department of the Company is responsible for summarizing and reviewing the List of Hazardous Sources, Risk Assessment Record and List of Important Hazardous Sources, and guiding all departments, units and project departments to implement risk control measures. 5.2 Occupational Health and Safety Risk Assessment Method
On the basis of hazard identification, the risk assessment is carried out by combining qualitative evaluation with quantitative evaluation. Qualitative evaluation adopts direct judgment method, and quantitative evaluation adopts working condition risk assessment method. 5.2. 1 direct judgment method
The direct judgment method should mainly consider the compliance of laws and regulations and the experience and lessons of similar accidents. When the current situation of hazards does not meet the requirements of laws, regulations, standards and specifications, or similar accidents or incidents have occurred, they should be directly judged as important hazards.
5.2.2 Risk assessment method for operating conditions (LEC method)
5.2.2. 1 Evaluate the casualty risk of system personnel according to the product of three factors related to hazard source and system risk. Its expression is:
D=L*E*C
Where: d- risk score;
L- the possibility of accidents; E- risk frequency;
C-the severity of the possible consequences of the accident.
Determination of L, E and C values of 5.2.2.2
A) The accident probability (L value) is determined according to the following table:
score
The probability of an accident is 10, which is completely predictable, 6 is likely to happen, 3 is possible, but it doesn't happen often, 1 is unlikely, and 0.5 is completely unpredictable.
0.2 highly improbable 0. 1
Almost impossible
B) The risk frequency (e value) is determined according to the following table.
Frequency of scoring risks
10 continuous
6 working hours every day
3 once a week 2 once a month 1 several times a year 0.5
rarely
C) The severity (C value) of the possible consequences of the accident shall be determined according to the following table.
Score: accident consequence 100 10 people died 40 2-9 people died 15 1 person died 7 people were disabled and 3 people were seriously injured 1.
slight wound
5.2.2.3 calculated the risk score d of each hazard source according to the formula D=L*E*C, and determined the risk level of each hazard source according to the risk score with reference to the following table.
Value risk degree
≥320 extremely dangerous, unable to continue operation 160-320 highly dangerous, requiring immediate rectification of 71-kloc-0/59 major danger, requiring rectification of 20-70 general danger, requiring attention to ≤20.
Slight danger, acceptable
In order to effectively control the operation activities related to major risks and ensure the realization of management objectives and indicators, according to experience:
D≤20, Grade I, acceptable, with slight risk; 20≤D≤70 is Grade II, which is a general risk and needs attention; D≥70 is Grade III, which is a major risk and needs to be rectified.
Among them, 70≤D≤ 160 is listed as an important hazard source, so it is necessary to formulate a rectification plan and carry out rectification as planned; 160≤D≤320, measures shall be taken immediately for rectification;
When D≥320, production and construction operations should be stopped, and operations can be resumed only after taking risk reduction measures.
5.3 Planning of risk control measures
5.3. 1 According to the evaluation results of the evaluation team, each unit sorts out the list of dangerous sources, establishes the List of Important Dangerous Sources, and distributes it to all departments covered by the system after being approved by the management representative. 5.3.2 Each department, unit/project department shall, according to the risk control measures determined in the List of Hazardous Sources, and under the guidance of the Ministry of Security, define the technical scheme and management measures for controlling the risk of hazardous sources. Its contents may include:
A) Use the current procedure documents, management system, operating procedures and other instructions to implement control;
B) Training and learning employees to improve their occupational health and safety awareness and safe operation skills; C) Specify the period and opportunity of monitoring and measurement; D) Add new control documents and specify management measures;
E) Establish and maintain emergency plans for possible accidents and emergencies;
F) Set targets, formulate and implement management plans, and achieve the target requirements through technical measures and management measures. 6 record
List of hazard sources
Occupational health and safety risk assessment records and list of major hazard sources