GB 21501-2008 English PDFUS$259.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB 21501-2008: Cupola and cupola charging machine -- Safety requirements Status: Valid
Basic dataStandard ID: GB 21501-2008 (GB21501-2008)Description (Translated English): Cupola and cupola charging machine -- Safety requirements Sector / Industry: National Standard Classification of Chinese Standard: J61 Classification of International Standard: 25.120.30 Word Count Estimation: 11,182 Date of Issue: 2008-03-13 Date of Implementation: 2008-10-01 Quoted Standard: GB 2893; GB/T 3098.1-2000; GB/T 3323-2005; GB 5083; GB 5226.1; GB 9969.1; GB 12265.1; GB 12265.3; GB/T 14776; GB/T 15706.1; GB/T 15706.2-2007; GB/T 16251; GB 16754; GB/T 16855.1; GB/T 16856; JB/T 6331.2 Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This Chinese standard specifies the cupola cupola feeder with designers, manufacturers, suppliers can use the party should follow the safety requirements and measures. This standard applies to cupola and cupola feeder. GB 21501-2008: Cupola and cupola charging machine -- Safety requirements---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.Cupola and cupola charging machine.Safety requirements ICS 25.120.30 J61 National Standards of People's Republic of China Cupola and cupola charging machine safety requirements Posted 2008-03-13 2008-10-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThis standard is mandatory terms, Chapter 3, which is recommended, others are mandatory provisions. The standard proposed by China Machinery Industry Federation. This standard by the National Foundry Machinery Standardization Technical Committee (SAC/TC186) centralized. This standard was drafted. Jinan Foundry and Metalforming Machinery Research Institute, Environmental Protection Equipment Co., Ltd. Qingdao Green, Qingdao Environmental Protection Melting provided Zhongzhida Preparation Ltd., Jiangyin City, casting plant, Suzhou Jin-casting plant flowers. The main drafters of this standard. Lu Jun, Ren first, gold segment very, Xiaru Ming, Qin Feng Wei. This standard was first formulated. Cupola and cupola charging machine safety requirements1 ScopeThis standard specifies the cupola and the cupola feeding machine designers, manufacturers, suppliers can use the party should follow the safety requirements and Measures. This standard applies to the cupola and the cupola feeder.2 Normative referencesThe following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB 2893 Safety colors GB/T 3098.1-2000 Mechanical properties of fasteners Bolts, screws and studs (idt ISO 898-1.1999) GB/T 3323-2005 molten metal welded head radiography GB 5083 production equipment with safety and health General GB 5226.1 Safety of Machinery Industry machinery electrical equipment Part 1. General requirements (GB 5226.1-2002, IEC 60204-1.2000, IDT) GB 9969.1 Instructions General Industrial Products GB 12265.1 machinery Safety distances to prevent danger zones being reached upper limbs (GB 12265.1-1997, eqvEN294. 1992) GB 12265.3 Safety of machinery to avoid crushing of parts of the human body minimum spacing (GB 12265.3-1997, eqvEN349. 1993) GB/T 14776 Ergonomic design principles job size and value GB/T 15706.1 Safety of machinery - Basic concepts, general principles for design - Part 1. Basic terminology and methods (GB/T 15706.1- 2007, ISO 12100-1.2003, IDT) GB/T 15706.2-2007 Safety of machinery - Basic concepts, general principles for design - Part 2. Technical principles (ISO 12100-2. 2003, IDT) Ergonomic principles GB/T 16251 design of work systems (GB/T 16251-1996, eqv ISO 6385. 1981) GB 16754 Safety of machinery - Emergency stop design principles (GB 16754-1997, eqv ISO /IEC 13850.1995) GB/T 16855.1 machinery safety control system relating to safety components - Part 1. General principles for design (GB/T 16855.1- 2005, ISO 13849.1999, MOD) GB/T 16856 Safety of machinery - Principles for risk assessment (GB/T 16856-1997, eqvprEN1050-1994) Determination of JB/T 6331.2 casting machinery noise sound pressure level measurement3 Terms and DefinitionsGB/T 15706.1, GB/T 16855.1, GB/T 16856, GB 12265.1 and GB 12265.3 established following terms And definitions apply to this standard. 3.1 Zero mechanical state Cupola, while feeder in the following mechanical state called zero mechanical condition. a) each power source can produce mechanical motion have been disconnected and locked; b) After the pressure of the fluid power source is turned off, the fluid pressure in the system has a relatively residual pressure release is zero; c) all of the pressure vessel are depressurized to atmospheric pressure; d) all the mechanical parts are potential device in its lowest actual value; e) remain in the pipeline equipment, cylinder, or other parts of the fluid pressure in the valve does not cause any actions appear equipment movement; f) the kinetic energy of the device with the lowest part of the actual value; g) has been moved or loose pieces of equipment are fixed; h) the starter can not start machinery.4 important risk projectsThe following items are important risk according to the provisions of GB/T 16856, and equipment within the scope of this standard is the result of the risk assessment. These risks may occur in the project under the conditions of use specified in the instructions by the device or each ring transport, installation, adjustment, repair, demolition in Section. 4.1 Mechanical hazards 4.1.1 move the cupola, feeder mechanical strength, mainly the stability may have broken, cracked, overturning and unpredictable Danger. 4.1.2 by the feeder parts and materials falling or thrown shock hazard generated. 4.1.3 generated by the feeder crushing, shearing, winding and dangerous. 4.1.4 by a cupola, surface feeder, the edges or corners produced stabbed or cut hazards. 4.1.5 or fall from the high-altitude operations generated around the device, slipping, tripping hazard. 4.2 Electrical Hazards 4.2.1 generated by the electrical systems of electric shock. 4.2.2 generated by lightning effect lightning hazard. 4.3 Thermal hazard Burns from the hot object, flames and heat radiation generated by the risk of scalding. 4.4 noise hazard Danger from the cupola blower, feeder noise hearing losses. 4.5 hazardous materials and substances produced 4.5.1 in the cupola melting and feeding area inhalation of carbon monoxide gas and dust caused danger. 4.5.2 liquid metal from the cupola, the hot coke, fire and explosion hazards of carbon monoxide produced. 4.6 cupola danger, feeder design principles ignore human learning ergonomics generated 4.6.1 In the cupola, feeder operation is not conducive to healthy posture or excessive force when monitoring or maintenance. 4.6.2 ignores the use of personal protective equipment at the time of melting. 4.6.3 not set clear warning in hazardous locations.5 Safety requirements and measures5.1 Basic requirements 5.1.1 cupola furnace, feeding machine should be maximized through design reduces the risk of making it intrinsically safe. Can not be effectively prevented by designing Risk or fully restricted, security guards should be used to protect people. 5.1.2 Cupola furnace safety design, feeder should be consistent with GB/T 15706.1, GB/T 15706.2 and GB 5083 regulations. 5.1.3 Control system components related to the safety and security requirements should be designed to comply with the relevant provisions of GB/T 16855.1 of. 5.1.4 cupola furnace, feeding machine should be designed to fully reflect ergonomic principles, and should be consistent with GB/T 16251, GB/T 14776 of Provisions. 5.1.5 Who can not be eliminated by design or sufficiently reduce the residual risks, should inform the user through the use of information. Safety requirements for mechanical hazards 5.2 5.2.1 Cupola welding quality should meet the requirements of grade Ⅲ GB/T 3323-2005 stipulated. 5.2.2 Water-cooled cupola furnace body should be used in the manufacture of steel boilers, the rest should be used in the mechanical properties not less than Q235A steel manufacturing. Key ministries Bit minimum thickness of the steel plate should not be less than specified in Table 1 to Table 3. Melting rate is greater than 5t/h cupola furnace floor should frame. Table 1 minimum thickness often lining cupola key parts of the steel sheet Melting rate/(t/h) Minimum thickness/mm Wind furnace shell flange rib bottom plate 7101612630 10101612630 15101612640 20121814640 25121814640 30121814840 The minimum thickness of the thin lining Table 2 water-cooled cupola key parts of the steel sheet Melting rate/(t/h) Minimum thickness/mm Wind furnace shell flange rib bottom plate 3101612530 5101612530 7121812630 10142212630 Table 3 minimum thickness of the water-cooled cupola furnace lining without key parts of the steel sheet Melting rate/(t/h) Minimum thickness/mm Wind furnace shell flange rib bottom plate 7162412630 10182812630 15182814640 20182814640 25203016640 30203016840 5.2.3 Cupola furnace shell of the coupling flange bolt size and number of not less than specified in Table 4, the performance of not less than GB/T 3098.1-2000 requirements specified in 4.8. Table 4 bolt size and number Melting rate/(t/h) the number of bolts Bolt size/month 1 M16 12 2 M16 12 3 M16 12 5 M20 12 7 M20 16 10 M20 16 15 M20 16 20 M24 18 25 M24 18 30 M24 18 5.2.4 cupola furnaces and furnace bottom leg, the furnace floor and furnace and the furnace sections, coupled with leg furnace installation foundation should be strong. Cupola on It should be left end position coupled with the auxiliary fixed. 5.2.5 After installation center cupola furnace deviation should not exceed 0.2% of body height. 5.2.6 Mobile cupola furnace structure should prevent wheel derailment and wheel spacing device. 5.2.7 On the outer cylinder should be equipped with air bladder thermal expansion compensation mechanism, heat exchange to be used should be able to ensure that the upper and lower end of the furnace heat balance. 5.2.8 bottom of the door opening and closing function of the locking mechanism should be reliable, the safety factor of not less than 5. 5.2.9 design process to deal with feeder overturning stability be checked. Safety factor 5.2.10 feeder supporting member of not less than 1.5, wire rope safety factor of not less than 7, the Security Department of lifting attachments The number of not less than 1.5. 5.2.11 feeder wire rope end connections shall meet the following requirements. --- Took Shengka connection Shengka plate rope should be long head end, Shengka amount not less than three, Shengka distance of not less than steel 6 times the wire rope diameter. At the same time should ensure that the connection strength of not less than the breaking strength of 85%. --- Feeder should not have joints using rope. --- Feeder wire rope should be stuck or measures to prevent friction. Wire rope on the drum should be arranged neatly in order. --- When the feeder is at the lowest point of the working position, the rope is wound on the reel, except for the number of turns of the outer end of the fixed rope, not less than 3 laps. --- Rope end fixing means on the feeder reel, should be a reliable locking or self-tightening properties. --- Single-layer winding reel and wound roll ends should have a single joint flange which should be higher than the outermost layer of the steel wire rope twice Height of the wire rope diameter. 5.2.12 nominal roll diameter wire rope diameter ratio of not less than 25. 5.2.13 pulley rope diameter ratio of diameter of not less than 25. 5.2.14 pulley rope off due measures to prevent tank. Smooth pulley groove should be smooth and should not damage the rope defects. 5.2.15 feeder track should have sufficient rigidity to prevent charging car derailed. 5.2.16 feeder should be fitted rising limit position limiter, down limit position and operating limit position limiter limiter. In Power Supply Off or end of the operation, should have prevented the load moving dangerously or uncontrolled free fall function. 5.2.17 feeder be provided with reliable brakes, brake safety factor of not less than 1.5, and should comply with the operating frequency of heat capacity. 5.2.18 worn brake friction plate should have the ability to compensate. Brake drum brake friction surface there should be no prejudice to the braking performance deficiencies. 5.2.19 welding quality feeder supporting member should meet the requirements of grade Ⅲ GB/T 3323-2005 stipulated. 5.2.20 feeder tank should prevent accidental or flip open the function. 5.2.21 feeder exposed may produce hazardous moving parts, such as open gears, couplings, drive shafts, etc., shall be fitted with protective devices Or to take effective measures to limit, guards and restrictions should not bring additional danger. Protective device shall comply with GB/T 15706.2- 2007 5.2.2 regulations. Restrictive measures should be consistent with GB 12265.1, GB 12265.3 and other relevant standards. As a result of the process Impossible to install guards when needed, should be required to GB 2893, the moving parts in the end or the face of the operator's side coated with 45 ° oblique Yellowness of the same width, black and white lines, the line width of 20mm ~ 50mm. 5.2.22 equipped with guards moving parts, there should be open and to stop the movement of the interlock device should be fitted with specified otherwise dangerous or should be open Gear cutting before allowing it to open the warning signs. 5.2.23 In the case does not affect the use, accessible mechanical parts to cause human injury should not have sharp edges, corners, rough surface, Flange. Edge foil side should be down blunt, hemming or trimming. It may cause scratches open end of the tube should be covered. 5.2.24 cupola, high above the table on the feeder and feeder pit perimeter should be equipped with protective fence and running boards, into the pit mouth Electrical interlocking shall be provided, should ensure the safety of personnel entering the workplace. 5.2.25 feed port section is supported on the platform, the platform should not be connected to the tightening. Reduce 5.2.26 cupola, feeding machine in the design and delivery should be within its surroundings caused by slips, trips and falls to the lowest risk degree. 5.2.27 feeder control system should have the security features in the instructions provided by the use of manual and automatic operation, should be safe Realization of feeding. After feeding machine should be fitted on 5.2.28 emergency stop devices, emergency stop devices should be able to stop all action and movement dangerous, the emergency stop device reset It should not cause restart. EMERGENCY functional requirements and design principles comply with the relevant provisions of GB 16754. 5.2.29 control system pause, stop, reset mechanism should not lead to any dangerous situation. 5.2.30 electrical interlock should have the function to prevent unexpected failures and hazardous events due to malfunction occurred. 5.2.31 in the instruction manual or in the cupola, feeder corresponding position set up warning signs, and make the necessary instructions. 5.2.32 In the feeder manual, the response feeder regular inspection, maintenance, replacement and lubrication described in detail. 5.2.33 adjustment, servicing or maintenance, cupola, feeding machine should be able to zero in the state machinery, the operator should not pose a risk. Safety requirements for electrical hazards 5.3 5.3.1 Electrical systems cupola furnace, feeding machine should prevent electrical hazards in accordance with the provisions of GB 5226.1. 5.3.2 it is possible in the course of being struck by lightning cupola, should take appropriate measures to make the formation of an electrostatic lightning is introduced underground. 5.4 Thermal hazard safety requirements 5.4.1 Cupola furnace between the flanges and air leakage at application fire-resistant, heat-insulating material sealed. 5.4.2 Cupola furnace floor should be crack. Bottom gate latch should be firm, there should be due to mechanical failure and accidental opening. 5.4.3 is the risk of plugging the taphole when reduced to a minimum, Cupola be provided with reliable taphole blocking mechanism. 5.4.4 Cupola hot air pipe outer surface application fire-resistant, heat-insulating material coated. 5.4.5 cupola shall be constructed to ensure that the bridge and the former furnace interface butt good. 5.4.6 feeding platform shall be constructed to ensure that the operator can feed port away from the cupola. 5.4.7 Water-cooled furnace furnace shell should be tight, cooling water should leak into the furnace. 5.4.8 sealed cooling water jacket and the cooling air pressure test should be carried out, the test pressure of the cooling water jacket is 0.4MPa, dwell time To 5min, test pressure cooling air is 1.2MPa, holding time of 10min, there should be no leakage. 5.4.9 safety instructions in the instructions for use should be following, and set the following warning signs cupola relevant parts. --- Careful in feeding the mouth or eyes ventilation when plugging the taphole, easy to flames or red-hot molten metal; --- When the furnace repair, furnace wall should be, and the bottom bridge hermitages tight, tight, and the angle of the bottom of the bridge design requirements shall be flat slope cultivation, smooth; --- Careful, direct physical contact surfaces of the furnace may be burned; --- Be careful when opening the door bottom, there will be red-hot coke and iron unmelted material fall. Safety requirements 5.5 Noise dangerous 5.5.1 Cupola is equipped with a fan should be placed in soundproof room, with soundproofed rooms noise source, the equivalent continuous sound pressure level limit of 85dB (A). Feeder during operation should not have abnormal sound, under idling conditions, the equivalent continuous sound pressure level limit of 85dB (A), measured Setting Method according to JB/T 6331.2 requirements. 5.5.2 arranged in parallel lines should not contact each other, to prevent the generation of noise. 5.6 Materials and substances dangerous security requirements 5.6.1 cupola in use should be equipped with dust removal device. Smelting process control dust emission concentration should be consistent with national and local environmental protection department The relevant provisions. Determination of dust emission concentration is carried out by the local environmental protection department according to relevant regulations. 5.6.2 resistance furnace gas dust removal means is formed should be reasonable regulation, in order to avoid the charging port at the furnace gas to escape. Each member shall occur leakage Dust phenomenon. 5.6.3 meet the operational requirements of the conditions, should try to reduce the size of the charging port. 5.6.4 Wet Scrubber various parts of the device should not be leaking. 5.6.5 should be set on the bellows duct or vent port, vent pressure release rate should ensure that the structure is not damaged, the operator should not be dangerous. 5.6.6 in the instructions for use should be at least the following safety instructions in the use of the site should be set to the appropriate content of the warning signs. a) In the charging port at the easy escape of carbon monoxide and other harmful gases, which should be noted. --- Cupola furnace kept intact; --- Enhance ventilation at the feeding platform; --- Coke and other raw materials should not be open storage, should be kept dry; --- Feed platform guardrails should be intact, avoid accidental fall; --- Should be above the roof open vent or skylight before charging port, especially when the filter is located in the roof. b) Under certain conditions, the cupola and the molten liquid metal will have a risk of explosion, which should be noted. --- After the furnace body to be naturally cooled in order to clean up the cupola, if necessary, cooling the blast, but the water should not be chilled; --- Should first open......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB 21501-2008_English be delivered?Answer: Upon your order, we will start to translate GB 21501-2008_English as soon as possible, and keep you informed of the progress. 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