GB 25683-2010Molten steel ladle - Safety requirements (English PDF)

3.2 Mechanical hazards

3.2.1 by the ladle mechanical strength, mainly the stability may have broken, cracked, overturning and moving dangerous unpredictable.

3.2.2 by the ladle components and objects thrown or falling shock hazard generated.

3.2.3 by the ladle surface, edges or corners produced stabbed or cut hazards.

3.2.4 or fall from the high-altitude operations generated around the device, slipping, tripping hazard.

3.2.5 Refractory improper operation caused by the rupture, leading to damage the parts off the ladle, the risk of capsizing.

3.2.6 by the lifting equipment caused by improper configuration ladle lifting failure caused by overturning the ladle off the danger.

3.2.7 Cleaning up the package lining, because the lining stick hanging steel slag caused by stab wounds or cuts the risk of shedding its lining and produced by crushing hazard.

3.2.8 by a collision ladle lifting process to persons generated a crushing hazard.

3.2.9 Due to squeeze ladle narrow operating environment resulting risk of injury.

3.2.10 ladle by the operating tools and materials and the improper use of improper placement bumps produced a fall hazard.

3.3 Electrical Hazards

3.3.1 Risk of electric shock generated by the electrical system.

3.3.2 ladle dangerous movement by the unexpected failure of the electrical generating system caused.

3.3.3 fire danger caused by the electrical fault.

3.4 Thermal hazards

3.4.1 steel liquid spills, splashes, burns flame and thermal radiation generated by the burns and burns.

3.4.2 Danger of burns caused by the high temperature enclaves.

3.4.3 slag caused by the burns, burns and fire hazard.

3.5 Other hazards

3.5.1 inhalation and poisoning hazard caused by smoke and other harmful gases and prevent the danger caused by normal operations.

3.5.2 burns caused by the water vapor, the risk of burns.

3.5.3 visual impairment caused by hazardous liquid steel surface of the light radiation. Ignore

3.5.4 ladle design ergonomic ergonomics principles arising from danger.

3.5.5 Due to the risk of the use of personal protective measures are not generated.

3.5.6 Explosion hazard due to standing water or wet locations pouring molten steel caused.

3.5.7 Explosion hazard due to standing water or wet liquid or ladle pouring steel slag caused.

3.5.8 Since the molten steel spilled into the bag or hook shaft and bearing clearance, resulting in dangerous operation failures.

4 safety requirements and measures

4.1 Mechanical hazards

4.1.1 ladle provisions should be consistent with GB T 23583.2 and/JB/T 1644, the drawings and technical documents in accordance with prescribed procedures approved manufacture.

4.1.2 ladle barrel, hanging climbing, beam, boom materials used should be consistent with GB/T 700 provisions.

4.1.3 pouring bags shaft seat materials used shall comply with GB/T 11352 of.

4.1.4 ladle used in the alloy structural steel shall comply with GB/T 3077's.

4.1.5 package axis mechanical properties of materials used in not less than 35 steel and shall comply with GB/T 699's.

4.1.6 gearboxes used iron castings shall comply with GB/T 9439, and steel castings shall comply with GB/T 11352 of. Testing and inspection should be carried out after the

4.1.7 package axis machining, testing requirements should be consistent with JB/T 5000.15 regulations. Inspectors should GB/T 9445 are qualified.

4.1.8 weld groove ladle all welded parts should be consistent with GB/T 985.1 and GB/T 985.2 requirements, welding quality should be consistent JB/T 9873 requirements of.

4.1.9 ladle should be self-locking or locking, the locking device should be safe and reliable.

4.1.10 ladle crane climbing down the shoulder and beams supporting surface should be close, when the fastening bolt should not be able to withstand the effect of 2 times the rated load.

4.1.11 ladle main security card and on both sides of the boom and the gap should not be greater than 5mm.

4.1.12 ladle crane climbing, strength design safety factor of not less than 10 boom, beams, strength design safety factor of the package is not axis It should be less than 5.

4.1.13 ladle 2 times the rated load for not less than five times, there should not anomalies.

4.1.14 sliding gate operator should be flexible and reliable, there should not be dripping molten steel after closing.

4.2 Electrical Hazards

4.2.1 The electrical system shall comply with the requirements of GB 5226.1.

4.2.2 electrical contact with the ladle and the cable should be a reliable insulation and anti-splash molten steel means that avoid electrical ladle of molten steel and heat-affected Burns.

4.2.3 Electric, there should be between the cable and the steel ladle reliable insulation, steel ladle avoid charging.

4.2.4 Cable connection with the ladle fixed and should be a reliable anti-off device to prevent the destruction of joints produce pull off.

4.2.5 Electric ladle lifting preceded in power, unplug it and then plug pouring plug in and power transmission.

4.2.6 and ladle on the ground should not be connected to the towing cable.

4.2.7 repair kits with lights should be safe voltage 36V; suspension cables of the power tool use.

4.3 Thermal dangerous security requirements and measures

4.3.1 The operator shall use a ladle in wear safety protective equipment.

4.3.2 ladle to put down a smooth, avoid parking in the ladle can cause inclined place.

4.3.3 level with the top of the package body should leave some clearance height, height clearance shall comply with GB/T 23583.1 of.

4.3.4 should spatter may result in injury, damage to the thermal radiation of the place pouring molten steel and slag.

4.3.5 should not use the bag is lined with cracks ladle.

4.3.6 Cleaning up the package liner, the liner temperature should not exceed 50 °C.

4.3.7 ladle operating environment should be provided with a ventilation and dust removal device, at any time to exclude dust.

4.3.8 should not be cooled with water hot ladle.

4.3.9 liquid steel should wear dark goggles or face shield.

4.3.10 Setting fence and warning signs in the ladle work area to prevent non-staff into the ladle workspace.

4.4 Other hazards

4.4.1 In the lifting process, should secure Kaka prison boom, in order to ensure smooth and safe barrel.

4.4.2 ladle reduction mechanism and ante mechanism to regularly add hot grease.

4.4.3 ladle design, manufacture and use should be consistent with GB/T 16251 requirements.

4.4.4 ladle operator's personal safety gear material, structure and working conditions should adapt, can effectively prevent the risk factors on people Body injury.

4.4.5 In the electric ladle electrical installation position clear warning signs should be set against electric shock.

4.4.6 obvious safety warning signs in the ladle containing liquid steel pick, pouring molten steel, clear packing location.

4.4.7 ladle tilting mechanism, the bail should be structured so that the operation convenient.

4.4.8 ladle reducer shaft and packet should be set to prevent security guards spilled into the molten steel. Determining safety requirements and measures 5

5.1 General Ladle should comply with this standard in Chapter 4, when determined by several methods the results should be the same. It is determined as follows:

5.2 Test method for determining a function Through the security check function test ladle function meets the requirements. If for technical reasons or can only function test can not be Use destructive tests to validate methods press the 5.3,

5.3 second detection method for determining With detection equipment, instruments, preference measurement methods and standardization of existing check ladle meets the requirements. If the instrument Measuring apparatus and methods can not meet the ladle or safety inspection safety requirements and measures are qualitative method given in 5.4,

5.4 Calculation method of determining or viewing pattern

3 Or using the calculated pattern to analyze and check the ladle meets the requirements for certain specific requirements (such as stability, center of gravity position, the mechanical strength Etc.) apply this approach. If only by calculation or pattern we can not draw definitive conclusions, given the

5.5 method press.

5.5 Observe the method of determining

4 By visual determination of specified components, check whether the ladle and performance requirements. NOTE. To observe the inspection or review include the ladle usage information.

6.3 User's Guide

6.3.1 Instructions shall comply with

6.5 and GB/T 9969 provisions of GB/T 15706.2-2007.

6.3.2 Instructions shall include the following.

a) a detailed description of the ladle protection and safety devices.

b) the safety of the device user should be requested.

c) detailed description of the ladle safety procedures and safety procedures should include at least the following.

--- Technical parameters recommended packing material;

--- Lining of cleaning, repair, masonry and drying requirements;

--- Ladle installation and replacement of parts and the refractory spout member;

--- Ladle lifting, parking, dressed and pouring of molten steel;

--- Other security operational requirements (such as security checks, regular maintenance, parking place, pouring liquid steel scrap, tools in contact with the liquid steel pre Heat, repair kits and pouring location ventilation).

d) Details of other operators may need protection, such as protective equipment. When

e) Before installation, fault detection, maintenance or repair and use, to eliminate or reduce the risk, the ladle into the mechanical condition zero For detailed steps to be followed, and to verify whether the method is in the zero state machinery.

f) fault diagnosis, rule out a detailed description and method of adjustment before starting maintenance.