(1) pay attention to ventilation and supervision before entering the pot, the vessel, the pot, the vessel on the manhole and the collector box on the hand hole must be fully open, so that the air convection for a certain period of time, fully ventilated.
When entering the pot and vessel for inspection, someone outside the vessel must be supervised. Before entering the flue or combustion chamber inspection, must also be ventilated.
(2) pay attention to the safety of electricity in the pot and wet flue inspection and lighting with electric lamps, lighting voltage should not be more than 24 v; in the drier flue, and there are proper safety measures, can be used no higher than 36 v lighting voltage. Into the container inspection, the voltage should not exceed 12 v or 24 v low voltage explosion-proof lamps.
When the power supply voltage of inspection instruments and repair tools exceeds 36 v, a well-insulated flexible wire and reliable grounding wire must be used. Boilers and vessels are strictly prohibited to use open flame lighting.
(3) prohibit the pressure to dismantle the connecting parts of the inspection of boilers and pressure vessels, such as the need to unload or tighten the pressure components of the fasteners, the pressure must be fully discharged before carrying out the pressure can not be unloaded or tighten the bolts or other fasteners in the case of pressure, in order to prevent accidents. (4) Prohibit their own gas pressure test instead of water pressure test Boiler pressure vessel pressure test are generally used as a pressurized medium, can not use the gas as a pressurized medium, otherwise it is very dangerous.
2. repair operations in the safety requirements of how
repair operations in the safety requirements are: (1) to participate in the repair work of the personnel should be in accordance with the provisions of the wear good labor protection equipment.
(2) maintenance workers should comply with the provisions of the safety and technical regulations of this type of work. (3) The overhaul personnel engaged in special operations should hold a special operations license.
(4) Multi-species, multi-level cross work, should be coordinated and take appropriate protective measures. (5) in the production and storage of chemical hazardous materials in the place of overhaul operations, should notify the site of the relevant operation, maintenance personnel to avoid, confirm the safety protection distance, in accordance with the relevant provisions of the state to set up obvious warning signs, and set up a person to monitor.
(6) night maintenance operations and special weather maintenance operations, must arrange for special personnel to carry out safety supervision. (7) The maintenance unit shall not change the content of the operation without authorization, expand the scope of the operation or transfer the operation location.
(8) When the production device abnormalities may endanger the safety of maintenance personnel, equipment users should immediately notify the maintenance personnel to stop the operation, and quickly evacuate the work site. After treatment, the abnormal situation is eliminated and confirmed safe, maintenance personnel can resume operations.
(9) on the maintenance of safety work approval procedures are incomplete, the implementation of safety measures are not in place, the operating environment does not meet the safety requirements, the operators have the right to refuse to work.
3. What are the technical requirements for equipment overhaul safety
The technical requirements for equipment overhaul safety are: (1) unsafe factors.
Rolling steel due to the complexity of the production process, a variety of equipment, equipment in the metallurgical plant accounted for a large proportion of the overhaul of the heavy task, so the overhaul safety is an important part of safety management. Rolling mill is a multi-layer operation, easy to fall from heights, object strikes and other accidents.
(2) preventive measures. 1) Before overhauling, organize the overhaul staff and safety management personnel to do a good job of safety preparations, and strengthen the safety supervision in the overhaul process.
2) In addition to safety precautions, the overhaul site should be set up fences, safety nets, barriers and safety signs. Work at height must wear a safety belt.
3) overhaul electrical, gas, oxygen, high-pressure gas and other power equipment and pipelines, strictly in accordance with the procedures to implement the power system to confirm the safety before proceeding. 4) replacement of gas pipeline facilities, to comply with the "gas safety regulations," the requirements, close to the flammable and explosive equipment, objects and vital parts, take fire prevention measures, after checking to confirm the safety of the fire.
5) Prohibit non-overhaul personnel into the scene, set out a safe route for non-job operators to walk, the width of which is generally not less than 1.5m.
6) Into the use of hydrogen, nitrogen in the furnace or gas storage cabinets, ball tanks for overhaul, should be taken to take a reliable replacement of the cleaning measures, and special supervision and take measures to facilitate contact between inside and outside of the furnace.
7) Strictly comply with the lifting equipment safety operation system, command should wear a safety label, the command should be a safety label before starting fire. Operating system, the command must wear a safety label, lifting rope, hook and loop to be carefully checked.
8) overhaul before the overhaul of the personnel must be carried out safety education, control of unsafe human behavior, strengthen the site management, control of unsafe state of things and the environment.
4. What are the safety requirements for converter overhaul
The safety requirements for converter overhaul are: (1) the furnace should be fully cleaned up around the furnace mouth, furnace body, vaporization and cooling device, flue mouth hood, chute mouth, oxygen holes, and slag plate residual steel and slag before dismantling the furnace.
(2) before repairing the furnace should cut off the oxygen, plug the blind, remove the oxygen gun, cut off the tilting power supply. The mouth of the furnace should support a good safety protection shed.
Should seriously implement the blackout, hanging system; repair furnace, masonry places around the furnace shall not stand. (3) Inside and outside the furnace, in addition to the implementation of the blackout and license system, should also be tilting brake lock.
(4) the use of upper repair method, the movable flue removed, the fixed flue below the blind should be set. (5) When the furnace bricklaying is completed, the position of the furnace should not be greater than 90 ° when dismantling the springboard.
(6) the use of double blowing process, maintenance should be cut off before the bottom of the gas source, and should take isolation measures.
5. How to make preparations for the safety management of the inspection
(1) Organizational preparations.
First of all, we must establish and improve the organizational leadership of equipment overhaul and safety at all levels of overhaul responsibility system; secondly, the overhaul organization should be reasonable, a clear overhaul of the person in charge, the person in charge of safety, construction personnel, to do the task is clear and clear in mind. (2) measures to prepare.
Do overhaul projects, construction content of the validation; construction program and stop the development of driving programs, the development of the plan progress; major overhaul projects, major, complex lifting project must develop lifting programs and safety and technical measures. The construction department as well as the implementation of construction safety measures.
Clearly enter the construction site of the safety discipline, and assign personnel responsible for the site safety provisions of publicity, inspection and supervision. (3) material preparation.
According to the overhaul of the project, content and requirements, prepare the materials, accessories and equipment needed for overhaul, and do a good job of lifting equipment, welding equipment, power tools, rigging, spreader prior to the safety inspection; check the safety warning signs, forbidden to move signs, prohibit the closing of the gate sign, the blind plate sign, the grounding line, so that the variety of complete, sufficient quantity, quality qualified, and use in place. (4) personnel preparation.
It should be clear that the person in charge of safety overhaul, set up a safety leadership group, clear responsibilities of the person in charge of safety at all levels and cooperate with each other, the liaison procedures; all the personnel to participate in the overhaul of a comprehensive safety education, explaining the overhaul of the safety of the construction program for each project, each link should pay attention to safety issues, each overhaul responsible person before the construction should be done to achieve the "five pending", that is to say, to wait for the construction task, The safety construction measures, safety construction methods, safety precautions, to comply with the relevant provisions of the special types of personnel should be carried out to professional work safety technology and maintenance rancid full provisions of the focus of safety education, so that it is adapted to and competent to overhaul the work.
6. What safety measures should be taken before the inspection personnel enter
(1) Before the inspection personnel enter the pool, they must open all the holes of the anaerobic reactor, blow in fresh air continuously with a blower for more than 24 hours, and determine the qualified content of methane, hydrogen sulfide, carbon dioxide and oxygen in the air in the pool before entering.
Can also be tested with animals to ensure the safety of operators. (2) repair personnel into the pool should wear a gas mask, wear a good helmet, fasten the safety belt and safety rope, outside the pool must be supervised, the entire maintenance period shall not stop the blower.
(3) The lighting and power tools used in the pool must be explosion-proof. If there is a need for open flame operation, it must meet the requirements of fire prevention, and at the same time, there should be emergency measures.
(4) When possible, toxic and hazardous gases and flammable gas monitors should be equipped to ensure the absolute safety of personnel.