Safety management regulations for sand blasting operation?

What are the specific contents of safety management regulations for sand blasting operation? The following is the answer of Zhong Da Consulting Company.

1. Objective To standardize the explosion-proof and occupational safety and health requirements in the sandblasting workplace of Hengxin Factory and prevent accidents. Second, the scope of application is applicable to the engineering design, construction, management and production of the sand blasting workplace in Hengxin Factory. Three. Cite the standard GBl 165 1 Rules for Selection of Labor Protection Articles GB/T 15605 "Dust Explosion Pressure Relief Guide Ⅳ". Definition 4. 1 combustible dust can react violently with gaseous oxidant or air under certain conditions. 4.2 Places where combustible dust and gaseous oxidant (or air) exist in dust explosion hazardous places. 4.3 Inertification Fill the places with dust explosion danger with enough inert gas, or pump the inert dust from the dust layer. Methods to make these dust mixtures explosive. 4.4 When the explosion is suppressed, the flame is extinguished by physical and chemical action, so that the unexploded dust no longer participates in the explosion control technology. 4.5 When an explosion occurs in a confined space with dust, gaseous oxidant or air, before the explosion pressure reaches the ultimate strength of the confined space, the high-temperature and high-pressure combustion products and unburned substances generated by the explosion will be discharged in a non-dangerous direction through the weak parts of the confined space. Blasting control technology to prevent the fence from being destroyed. 4.6 When a dust explosion occurs in the secondary explosion, the shock wave of the initial explosion will raise the deposited dust again to form a dust cloud, which will be ignited by the subsequent flame for continuous explosion. V. Management Regulations 5. 1 The new construction, reconstruction and expansion projects of sand blasting workplaces must abide by these regulations. Safety technical measures that do not meet the requirements must be formulated and implemented within a time limit. 5.2 The head of the department must know whether the sand used by the department is explosive and take measures to effectively control the sand explosion. 5.3 Hengxin Factory, in combination with the characteristics of the sand blasting workplace, formulates the detailed rules for the implementation of sand blasting and explosion prevention and carries out maintenance, and earnestly carries out maintenance according to the maintenance confirmation form for dangerous parts. The Security Department of the Human Resources Department conducts supervision and inspection. 5.4 The department should do a good job in safety production and explosion-proof education, popularize explosion-proof knowledge and safety laws and regulations, so that employees can understand the degree of danger and explosion-proof measures in the blasting workplace of the department; The company shall provide technical and business training to its employees, and only after passing the examination can they take up their posts. 5.5 Fireworks are strictly prohibited in the sand blasting workplace, and the electrical equipment used must be explosion-proof. 5.6 The purchased explosion-proof products must be approved by the Ministry of Labor or its designated unit, and the license shall be issued. 5.7 Without the approval of the Safety Office of the Human Resources Department, facilities such as safety, ventilation, explosion prevention and explosion venting shall not be dismantled. 5.8 The safety assessment of the company's construction projects shall include risk analysis of sand blasting explosion and explosion-proof measures. 5.9 The following regulations must be observed when carrying out open flame operation in the sand blasting workplace: 5.9. 1 Work permit approved by the safety supervisor; 5.9.2 Before open flame operation, the combustible dust in the open flame workplace shall be thoroughly removed; 5.9.3 During the open flame operation and subsequent cooling, dust is strictly prohibited from entering the open flame workplace; 5.9.4 The open flame operation part must be separated or isolated from other parts of the equipment. 5. 10 sandblasting operation must comply with the following provisions: 5. 10. 1 Wear protective equipment before operation, and do not work with bare arms. There shall be no less than two people at work; 5. 10.2 The gas storage tank, pressure gauge and safety valve shall be calibrated regularly. The gas storage tank discharges ash once every two weeks, and the filter in the sand tank is checked once a month; 5. 10.3 Check whether the ventilation pipes and sandblasting doors are sealed. Five minutes before work, ventilation and dust removal equipment must be started. When the ventilation and dust removal equipment fails, the sandblasting machine is prohibited from working. 5. 10.4 The compressed air valve should be opened slowly, and the air pressure should not exceed 0.8MPa；; 5. 10.5 The grit size of sandblasting should meet the work requirements, generally between 10 and 20, and the grit should be kept dry; 5. 10.6 When the sandblasting machine is working, irrelevant personnel are prohibited from approaching. Please stop the machine when cleaning and adjusting the running parts; 5. 10.7 Don't blow dust with compressed air or make jokes; 5. 10.8 After the work is finished, the ventilation and dust removal equipment shall continue to operate for five minutes and then shut down to discharge indoor dust and keep the site clean; 5. 10.9 In case of personal and equipment accidents, keep the site and report to relevant departments; 5. 10. 10 Eating and drinking are prohibited in sand blasting workplaces. 5. 1 1 The sand blasting workplace, equipment and devices shall meet the following requirements: 5.11The bearings of sand blasting equipment shall be dust-proof and sealed; If overheating is possible, a detector that can continuously monitor the bearing temperature must be installed. 5. 1 1.2 belt drive is not suitable; If belt drive is used, speed difference sensor and automatic anti-skid protection device must be installed; When sliding friction occurs, the protection device should be able to ensure automatic stop. 5. 12 prevention of arc and spark ignition 5. 13 corresponding lightning protection measures should be taken in sand blasting workplaces. 5. 14 When there is danger of electrostatic ignition, the following regulations must be observed: 5. 14. 1 Generally, all metal equipment, device housings, metal pipes, supports and components should be used. If it is inconvenient or the process does not allow direct grounding, it can be indirectly grounded through electrostatic conductive materials or products. Electrostatic direct grounding resistance is not greater than100Ω, and indirect grounding resistance is not greater than107Ω. 5. 14.2 The appliance directly used for containing powder and the pipeline (belt) for conveying powder shall be made of metal or antistatic material. 5. 14.3 All metal pipe joints (such as flanges) must be bridged. 5. 14.4 Operators should take anti-static measures. 5. 14.5 It is forbidden to use high-speed flowing sand to contact directly grounded metal conductors or screens to eliminate static electricity. 5. 15 Prevent friction collision from igniting sparks 5. 15. 1 When fine sand can be ignited by sparks generated by accidental collision (such as collision between metal sundries and internal parts of process equipment), collision prevention measures must be taken. 5. 16 The allowable surface temperature of the equipment or device (such as light source, heater, etc.) in direct contact with the dust cloud must be lower than the minimum ignition temperature of the corresponding dust layer. Safety measures for intransitive verbs 6. 1 Strictly controlling the concentration of sand blasting outside the concentration range of dust explosion is an effective explosion-proof measure. Dust concentration must be controlled above the upper limit of dust explosion concentration during sandblasting. 6.4 Reduce the damage caused by the initial explosion. When connecting the 6.4. 1 section with the isolated 6.4. 1 process equipment, it must be ensured that the equipment can be easily separated and moved, and no naked flame operation is carried out. 6.4. 1.2 When designing process equipment, technically realizable isolation must be considered to prevent the explosion of one equipment from spreading to adjacent equipment. 6.4.2 Workshop shall be protected by automatic explosion suppression system. 6.4.3 Explosion venting 6.4.3. 1 When the strength of process equipment is insufficient to withstand the pressure generated by fully developed internal dust explosion, an explosion venting port must be set. The size of explosion vent should be based on GB/T 15605 or dust explosion standard test and actual investigation, so as to ensure that the maximum explosion relief pressure that may be reached under accidental explosion does not exceed the maximum internal pressure that the container can bear. For the process equipment of 6.4.3.2 inline pipeline, the usually recommended design index should at least be able to withstand the internal overpressure of 0. 1MPa. 6.5 Prevent secondary explosion 6.5. 1 Do a good job of cleaning in peacetime 6.5. 1. 1 All production workshops that may accumulate dust should be cleaned in time. 6.5. 1.2 It is forbidden to use compressed air for purging. 6.6 Personal Protection and Rescue 6.6. 1 Personal Protection 6.6. 1 Production personnel must use labor protection articles according to the relevant regulations of GBl 165 1. 6.6. 1.2 places that use inert gas or can release toxic gas in the process flow must be equipped with respiratory protection devices that can purify the air. 6.6. 1.3 In the workplace, it is forbidden for production personnel to wear underwear made of chemical fiber fabrics. 6.6.2 Rescue 6.6.2. 1 The company shall prepare a rescue plan for accidents such as dust explosion. Under the close cooperation and guidance of the local fire department, 6.6.2.2 should regularly conduct fire fighting and rescue training for all employees. 6.7 Fire Fighting 6.7. 1 It is forbidden to use fire fighting methods that can raise deposited powder to form dust clouds. 6.7.2 When extinguishing the fire, nozzles with good atomization effect must be used to ensure that the extinguishing agent can form a dust cloud and liquid mist curtain. 6.7.3 The fire extinguishing agent should be selected correctly according to the physical and chemical properties of dust. 6.7.4 When combustible materials meet water and produce explosive gas, it is forbidden to put out the fire with water. 6.7.5 Fire extinguishing facilities and extinguishing agents must be available at any time. 6.8 Reasonably design the structure and layout of buildings (structures) 6.8. 1 Install process equipment with dust explosion danger or buildings (structures) with explosive dust, and keep enough safe distance. 6.8.2 The building shall be a single-story building, and the roof shall be a light structure or an "explosion-proof" structure. 6.8.3 Structure of Multi-storey Building 6.8.3. 1 Multi-storey building should adopt frame structure; Where this structure cannot be adopted, explosion doors with large enough area must be set on the wall. If 6.8.3.2 uses windows or other openings as explosion vents, it must ensure that the explosion can be effectively vented in case of explosion. 6.8.4 The hazardous process equipment in the plant should be located at a higher position in the building and close to the external wall. 6.8.5 Equipment, beams, shelves, walls, etc. Must have a surface structure that is easy to clean, and there should be no upward splicing plane. 6.9 evacuation routes 6.9. 1 There must be enough evacuation routes in the work area. The number and location of evacuation routes are determined by the Safety Office of the Human Resources Department. 6.9.2 The evacuation route must have obvious road signs and emergency lighting. Seven. Punishment 7. 1 The person in charge of each department should strictly urge the personnel of this department to abide by the operation specifications of the sand blasting workplace, and do not check regularly to find and stop illegal operations in time. Those who do not work on the sand blasting site according to the requirements of this regulation shall be punished by the operator, by the on-site supervisor, and by the department head. If an accident occurs due to operation, which causes losses and casualties to the company, it shall be transferred from the company and handed over to judicial organs for handling. 7.2 If foreign construction units and individuals violate the provisions of this Code, they will impose the same punishment on the person in charge of the liaison department and the person in charge as our employees who violate the rules in the sand blasting workplace. 7.3 Other matters not covered shall be implemented in accordance with the Company's Employee Manual and relevant regulations.

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