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GB 17750-2012: Safety code for painting -- Safety for dipping process
Status: Valid GB 17750: Evolution and historical versions
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Safety code for painting -- Safety for dipping process
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GB 17750-2012
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| GB 17750-1999 | English | 479 |
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Safety code for painting--Safety for dipping process
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PDF similar to GB 17750-2012
Basic data | Standard ID | GB 17750-2012 (GB17750-2012) | | Description (Translated English) | Safety code for painting -- Safety for dipping process | | Sector / Industry | National Standard | | Classification of Chinese Standard | C72 | | Classification of International Standard | 13.100 | | Word Count Estimation | 14,11 | | Older Standard (superseded by this standard) | GB 17750-1999 | | Quoted Standard | GB 150.1; GB 150.2; GB 150.3; GB 150.4; GB 6514-2008; GB 7691; GB/T 14441; GB 14443-2007; GB 14444; GB 16297; GB 50016; GB 50058 | | Regulation (derived from) | National Standards Bulletin 2012 No. 17 | | 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 paint job of dipping dipping process areas and their workplaces, dipping equipment, electrical equipment, fire and explosion, ventilation, paint storage, use and transportation, fire protection, operation, maintenance a | GB 17750-2012: Safety code for painting -- Safety for dipping process---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.
Safety code for painting.Safety for dipping process
ICS 13.100
C72
National Standards of People's Republic of China
Replacing GB 17750-1999
Safety code for painting
Dipping process safety
Issued on. 2012-07-31
2013-03-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Introduction Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions
4 dipping zone and workplace 2
5 dip coating apparatus 2
Fire-proof electrical equipment 6 4
Ventilation 7 5
8 paint storage, use and transport 5
9 Fire 6
10 operation, maintenance and training 7
Appendix A (normative) dipping job Explosive Area Classification 8
Foreword
All technical contents of this standard is mandatory.
"Safety code for painting" series of national standards has released a total of 12.
--- GB 6514-2008 "Safety code for painting painting process safety, ventilation and air purification";
--- GB 7691-2003 "Safety code for painting Safety Management Law";
--- GB 7692-2012 "Safety code for painting before painting Process Safety, ventilation and purification";
--- GB 12367-2006 "painting - Safety for electrostatic spray painting process";
--- GB 12942-2006 "painting - Safety for working in confined spaces safety technical requirements";
--- GB/T 14441-2008 "Safety code for painting the term";
--- GB 14443-2007 "Safety code for painting paint drying oven safety regulations";
--- GB 14444-2006 "Safety code for painting spray booth safety regulations";
--- GB 14773-2007 "painting - Safety for electrostatic spray guns and associated apparatus and technical conditions";
--- GB 15607-2008 "painting - Safety for electrostatic powder spraying process security";
--- GB 20101-2006 "Safety code for painting organic waste gas purification device safety regulations."
This standard is one of "Safety code for painting" series of standards.
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard replaces GB 17750-1999 "Safety code for painting dipping process."
This standard compared with GB 17750-1999, the main technical changes are as follows.
--- Add, update national standard reference;
--- In the "terms and definitions" supplement increases the "vacuum dipping 3.3";
--- Supplementary adjustments in the content, as in "5 dipping equipment" chapter, an increase of "5.4 vacuum dipping and drying equipment," "5.5
Magnet wire impregnation equipment "content;
--- In a paragraph of text for the integration, such as the content of the original standard similar adjustment 5.1.2 to 6.5, was adjusted to 9.2 to 5.3, the
5.2 and 5.4 for the merger 5.1.2;
--- Supplementary 5.3.1 adds that "the lower part of the conveyor should be set up safety device to prevent contamination of the lubricating fluid dripping bath and prevent catenary
And track friction sparks caused the fire ";
--- Original standard "6.1 General Requirements" in 6.1.1 and 6.1.2 modify merged into 6.1, 6.1.3 and 6.1.4 will revise together
And 6.2, and rearrange;
--- Delete the original standard "11 Training" section, modify the original standard "10 Operation and Maintenance" chapter "10 operation, maintenance and
Training. "
The standard reference to American National Standard NFPA34 "Flammable and combustible material spraying operations Standards" (2007 edition).
This standard was proposed by the State Administration of Work Safety.
This standard by the National Standardization Technical Committee produced safety coating operation Technical Committee (SAC/TC288/SC6) centralized.
This standard was drafted. First Machinery Industry Design and Research Institute, Jiangsu Academy of Safety Science, Zhejiang Huali Painting Equipment Co.,
The company, Zhejiang Mingquan Industrial Coating Co., Ltd., Zhejiang Tong fish developed making lacquer Limited, Zhejiang Zhiqiang Paint Co., Ltd., Yangzhou Qionghua Coating
Engineering Equipment Co., Ltd., Wuxi tin Chau Wire Co., Ltd., Chongqing Yangtze River Painting Equipment Co., Ltd., Dongguan Zhuo Feng electromechanical equipment
Limited.
The main drafters of this standard. Xu Hongzhou, Hu Yiming, Lv Jianli, Huang Liming, Mao Lian, Wu straight, Xu Jin law, Dan Antao, Zhouguodong,
Kim Chan Fang, New Fang Liang, Lu Zhiqiang.
This standard replaces the standards previously issued as follows.
--- GB 17750-1999.
Safety code for painting
Dipping process safety
1 Scope
This standard specifies the fire and explosion in dip coating operations process dipping zone and workplaces, dip coating equipment, electrical equipment, ventilation,
Paint storage, use and transportation, fire protection, operation, maintenance and training requirements.
This standard applies to the use of flammable or combustible dipping process and equipment design, manufacture, installation, acceptance and use of liquid coatings. Aqueous
Ventilation and roll dip coating, curtain coating, curtain coating and other processes can also refer to use.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB 150 (all parts) pressure vessel
GB 6514-2008 Safety code for painting painting process safety, ventilation and air purification
GB 7691 painting - Safety for Safety Management Principles
GB/T 14441 painting - Safety for term
GB 14443-2007 Safety code for painting paint drying oven safety regulations
GB 14444 Safety code for painting spray booth safety regulations
GB 16297 Air Pollutant Emission Standards
GB 50016 architectural design code for fire protection
GB 50058 Explosion and fire hazard electrical installation design specifications
3 Terms and Definitions
GB/T 14441 and defined by the following terms and definitions apply to this document.
3.1
Dip dipping
The workpiece is immersed in the paint, and the process for removing the excess paint.
3.2
Dip tank diptank
Containing coatings can be used to dip the workpiece and have the security features of the tank.
3.3
Vacuum dipping vacuumdipping
Workpiece placed in a sealed, pressure, and vacuum vessel, and pressurized fluid injection dip, thoroughly soak process for the workpiece.
3.4
Dipping zone dippingarea
Implementation of lacquered zones dipping job.
3.5
Dip coating vapor source dippingvaporsource
And Chang Lu Lek painter dipping bit of liquid paint and dip the workpiece in 0.3m range, can still measure the liquid paint organic solvent vapor concentrations in excess of
Its lower explosive limit concentration of 25% places.
4 dipping zone and workplaces
4.1 dipping zone range
It exists dipping volatile gas source and an organic solvent volatilized gas source region. Dipping zone should generally include the following ranges.
a) Internal dipping zone and exhaust system connected to the internal;
b) the inner space enclosed on dip lines;
c) other jobs determined by the relevant regional dip-coating process is located.
4.2 dip workplace
Fire hazard classification 4.2.1 dip workplace performed in Table 1 GB 6514-2008.
4.2.2 Other methods should be used to dip the workplace fire prevention space, firewalls, fire partitions, or recognized by the safety zone and other workers to dip
Bit, materials are separated, and shall comply with the relevant provisions of GB 50016.
4.2.3 dipping below the workplace should not be located in the low-lying areas around the site.
4.2.4 entrance channel and dipping the workplace should be smooth and should comply with the relevant provisions of GB 50016.
Health and noise 4.2.5 dipping workplaces shall comply with the relevant provisions of GB 6514-2008 5.1.2.
5 dipping equipment
5.1 dip tank
5.1.1 tank
Dip tank by steel, reinforced concrete or other non-burning body material, and should have strong support. Tank volume exceeding 2m3
Or liquid surface area of more than 1m2, the fire resistance of structural materials shall not be less than 1h.
5.1.2 notch
Notch dip tank should be higher than the seat surface at least 150mm, while the level of the bath from the slot should be not less than 150mm. When the dip tank notch
Above the seat surface is less than 500mm, the safety railing around it should be located.
5.1.3 overflow pipe
5.1.3.1 dip tank volume of more than 0.6m3 or bath surface area of more than 1m2, the tank should be set to vent excess paint overflow pipe.
5.1.3.2 overflow pipe diameter should be based on the bath surface area, length of the tube, the inclination may be. Processing capacity of the overflow pipe should be able to meet the extra groove
Discharge liquid. Overflow pipe diameter should not be less than 75mm.
5.1.3.3 overflow pipe connecting the discharge pipe should be easy to repair and clean-up.
5.1.3.4 overflow pipe installation location should ensure that the liquid level not less than 150mm from the notch on the tank.
5.1.4 groove bottom discharge device body
5.1.4.1 dip tank volume of more than 2m3 should be set at the bottom of the discharge device and a transfer tank, when a fire, should be able to quickly and safely to the bath
Transferred to the transfer vessel.
5.1.4.2 bath discharging operation may be manual or may be automated. For manual operation, the operating station should be located in convenient, and safe
position. When not rely on gravity flow discharge shall be set to automatically transfer pump. For the cover with automatic shut down dip tank, not to set the bottom row
Place device.
5.1.4.3 bottom discharge tube shall be capable of emptying the bath within 5min. Diameter to be less than the size shown in Table 1.
Table 1, the minimum size of the discharge pipe
Dip tank volume/L discharge pipe diameter/mm
1900 \u003cV≤2850 75
2850 \u003cV≤3800 100
3800 \u003cV≤9500 125
9500 \u003cV≤15000 150
V > 15000 200
5.1.5 Bath temperature control
5.1.5.1 When the bath when needed indirect heat, dip tank should control apparatus according to process requirements set temperature to prevent overheating of the bath, steam plot
Poly and possible spontaneous combustion.
5.1.5.2 dip bath temperature and the surface temperature should not exceed the boiling temperature of 55 ℃ or any one.
5.1.5.3 thermostat should be able to control the high temperature limit. When the temperature exceeds the set temperature, conveyor chains, the heater should stop working.
5.1.5.4 When the bath liquid level is above or below the safety level, the heating system should be shut down automatically.
5.2 Transfer groove
5.2.1 Transfer volume dip tank should be greater than the volume of the groove, and shall dip tank communicating. Dip tank paint transfer should be discharged does not work
Shift groove.
5.2.2 Transfer tank should be equipped with a transfer pump to transfer the paint tank and then returned dip tank.
5.2.3 transfer groove should be located in the ground outside the scope of the workshop, semi basement construction and shall comply with the relevant provisions of GB 50016.
5.3 Conveyor System
5.3.1 should be set lower portion of the conveyor chain safety device to prevent contamination of the lubricating fluid dripping bath, catenary and to prevent sparks generated by friction with the track
And cause a fire.
5.3.2 When a fire occurs, should immediately stop conveyor operation.
5.3.3 When the organic solvent vapor concentration dip area more than 25% of its lower explosive limit, the conveyor should stop running.
5.4 vacuum dipping and drying equipment
5.4.1 Vacuum Impregnation drying equipment design, manufacture, inspection and acceptance should meet the GB 150 (all parts) of the relevant provisions.
5.4.2 vacuum dipping and drying equipment should be fitted with explosion-proof equipment -0.1MPa safety (safety film), in the vacuum does not exceed the design pressure before being
Often it works.
5.4.3 Vacuum impregnation vacuum drying equipment to deal with their work, leakage rate, work pressure and other tests carried out in the following cases.
a) identification of new products when;
Year under b) normally once;
c) shut down more than three months, when production resumed.
5.4.4 Vacuum Impregnation drying equipment in use, the device should read the relevant instructions, strictly follow the instructions to turn on the device (has
Open No. valves, fans, heaters, pumps, transmission and paint pumps, etc.), in the relevant instrument instruction properly, can be put into production.
5.4.5 At the end of each shift, to open the bottom valve vacuum dipping and drying equipment, paint mixture was washed vent valve is closed.
5.4.6 Vacuum Impregnation drying equipment inside the dipping tank, paint filters, dipping planes to be cleaned regularly.
5.4.7 regularly check whether the vacuum impregnation drying equipment hot air inside the pipeline has accumulated coke, once found should be cleared up.
5.4.8 vacuum dipping and drying equipment to comply with the relevant provisions of GB 14444 and GB 14443-2007's.
5.5 Electromagnetic Wire impregnation equipment
5.5.1 magnet wire dip tank should be composed of steel, the support should be firm and have the strength to withstand the tension. The bottom should be provided with a discharge port.
Should dip below the groove 5.5.2 magnet wire a waste paint storage tank, to prevent the insulating paint dip tank in the production process on a drip device
And ground pollution.
5.5.3 magnet wire should dip tank overflow pipe, overflow pipe should be seamless steel cone, and can be inserted into the groove at the bottom of the discharge opening dip,
The overflow pipe from the top notch of not less than 100mm.
5.5.4 Bath (varnish or paint) should be used to steam heating or other indirect heating, prohibited the use of an open flame or electric heating tube directly
heating.
Safe operation and maintenance 5.5.5 magnet wire impregnation equipment shall comply with the requirements of GB 14443-2007 in Chapter 9.
5.5.6 magnet wire impregnation equipment operation, should be manned. Not for maintenance, lubrication equipment operating in the state.
Fault and fire hazard 5.5.7 magnet wire impregnation equipment, you should be able to automatically turn off the power.
6 fire and explosion electrical equipment
6.1 determining explosion hazardous areas shall comply with 50058 in explosive gas atmospheres hazardous area requirements GB , see Appendix A.
Electrical equipment and wiring shall comply with the relevant provisions of GB 50058.
6.2 outer surface temperature exceeds ignition point dip coating equipment can not be placed in the dipping zone or explosive gas atmospheres hazardous zone 2 areas.
Sparks or hot metal particles produced equipment should be fully enclosed or explosion-proof in order to set dip zone or explosive gas ring
2 throughout the region.
6.3 Electrical equipment and wiring is located near the open dip tank, it should meet the requirements of 6.3.1,6.3.2. See Figure A.1 and A.2.
6.3.1 Electrical equipment and wiring located in the dip from the volatile gas source and disposed of 1.5m from the volatile gas source dip in the horizontal direction
Within 7.6m pool, pit or below ground level channel shall meet the requirements for explosive gas atmospheres Zone 1 hazardous areas. If the pond pit
Or channel extending to dip volatile gas source other than 7.6m should be placed volatile source gas baffle or extending the entire length of the portion are designated as Zone 1.
Internal wiring and equipment used in electrical equipment 6.3.2 6.3.1 Zone 1 is located in the periphery as well as the extension of the 3m range in the horizontal direction
Extension 6m above the ground and in space 1m posed should meet the requirements for explosive gas atmospheres Zone 2 hazardous areas. When the volatile gas dip
Source surface area of not more than 0.5m2, dip tank capacity not exceeding 20L and operating or not operating during a volatile gas concentration does not exceed explosion
The lower limit concentration of 25%, the electrical installation may not follow this policy.
6.4 an operating area closed enclosure dip tank shall comply with the requirements 6.4.1,6.4.2. See Figure A.3.
6.4.1 dip tank inside the enclosure should be classified as explosive gas atmospheres hazardous area l region, in the area of space for electrical equipment and wiring should conform
Requirements for explosive gas atmospheres Zone 1 hazardous areas.
6.4.2 against housing opening and extending to the surface of 3m space shall be classified as explosive gas atmospheres hazardous area zone 2, in the space of power
Gas equipment and wiring shall comply with the requirements for explosive gas atmospheres Zone 2 hazardous areas.
6.5 In the external coating paint between the library and from all directions within 1.5m of any paint or solvent containing the open containers and equipment and
Space extending to the ground shall be classified as explosive gas atmospheres hazardous area Zone 1, Zone 1 3m outside the scope should be classified as explosive gas atmospheres 2
Area, in this area of the wiring and equipment shall meet the requirements of the region. See Figure A.4.
6.6 enclosure dipping apparatus should be explosion-proof lighting fixtures or separators lighting. Glass boxes or observation to be used shall be explosion-proof
Glass, boxes should be sealed to restrict vapor to enter. Lighting maintenance carried out outside the enclosure.
6.7 In order to prevent the accumulation of static electricity sparks, all staff should wear insulated shoes or friction with the ground sparking shoes, the
Some electrically conductive objects, including metal should be well grounded process equipment, containers, exhaust pipe, pipe coating delivery system, grounding resistance
Shall comply with the provisions of 8.4.6.
7 Ventilation
7.1 dip workplace air supply, exhaust system shall comply with the requirements of this chapter and the relevant provisions of GB 6514-2008.
7.2 dipping zone should be mechanically ventilated, the concentration of the organic solvent vapors from the volatile region than 1.5m gas supply does not exceed the explosion
The lower limit concentration of 25%. Volatile organic solvent gas concentration in the ventilation system shall not exceed 25% of the lower explosive limit concentration.
7.2.1 dipping station should have a well-designed housing, with ventilation to limit vapor within the housing.
7.2.2 When the ventilation system fails, the control system should automatically stop dipping work, concurrent sound and light alarm.
7.2.3 Throughout the dipping process, the ventilation system should be kept running, before starting the conveyor system, the exhaust system ahead run 10min,
After dipping operation, the exhaust system should continue to run 10min. In automatic dipping station unattended operation, the control system should be confirmed row
The case of wind turbine working properly, dipping device to start.
7.3 dipping zone should add a sufficient amount of fresh air to compensate for the discharge of air from the dip area. Location supplementary air inlet should guarantee
Discharged from the dip coating process to no longer air is circulated back.
7.4 exhaust pipe should be the most convenient route to reach the discharge port, but not across the firewall. Air vents exhaust pipes away from the fresh air intake
Port and air vents should stay away from exterior walls or above the roof not less than 2m. Air vents should not be less than 7.5m against a combustible building, also
We should not be unprotected against the exhaust port within 7.5m of non-combustible building opening.
7.5 exhaust pipes and fixtures should be of adequate strength steel or other non-combustion body composition.
7.6 exhaust pipe support.
7.6.1 Design of pipeline support should be considered to bear the piping system itself and can be expected to weight any residues. When the piping system
When the internal water protection, the pipeline can withstand the weight of the support it should also consider the foreseeable cumulative emissions sprinkler water. Load should not be directly
Add to or pass on the device to give the pipe connected to the system.
7.6.2 pipeline should be suspended and the support member or firmly fixed on the building, in order to avoid vibration or pressure in the piping system.
7.6.3 pipeline design should consider the suspension and support pipeline expansion and contraction.
7.6.4 should not be building walls, floors, ceilings, roofs as part of the exhaust pipe.
7.7 Exhaust pipe cross-section may be circular, square or other suitable shape. When necessary, the exhaust pipe should be equipped with a manhole, in order to check
Investigation, use and maintenance, cleaning and fire protection facilities.
7.8 exhaust fan and the drive should be explosion-proof fan.
7.9 dip over the workpiece only in an organic solvent vapor concentration does not exceed 25% of its lower explosive limit concentration of ventilation occasions drying.
7.10 exhaust system exhausts shall comply with GB 16297 of the relevant provisions.
8 paint storage, use and transport
8.1 dip in the workplace between the paint should be timed ventilation, ventilation rate of not less than 10 times/h.
Paints and amount of the solvent in the reservoir 8.2 paint dip between adjacent regions in storage shall not exceed the amount of use of the day, between the reservoir and the paint area should dip
Spaced, fire resistance should not be less than 2h.
8.3 from paint to paint between the reservoir area should be delivered to the dip in the following ways.
a) by arranging appropriate pipeline;
b) with a closed container or dedicated mobile security slot;
c) exposures or accumulation of static electricity easily broken and easy transport or storage containers are not applied paint.
8.4 bath management.
8.4.1 discontinued when the dip tank paint transfer should be routed groove. Preparation of coatings and organic solvents should be stored in airtight containers or
Mobile slots tank. It can also be stored in a liquid volume of less than 0.6m3 surface area of less than 1m2 or stamped plate dip tank.
8.4.2 the use or disposal of paint where should quickly adopt safe disposal or clean up a spill of liquid.
8.4.3 Only in the absence of an open flame or other sources of ignition, in order to use paint and flammable organic solvents.
Application of the following methods to achieve when between its original container and dip tank, container, movable tank transport 8.4.4 flammable paint and organic solvents.
a) with a capacity of not more than 19L containers or safety cans;
b) through a sealed pipe system;
c) movable tank or container on top of the extraction means;
d) by gravity feed.
8.4.5 does not apply to air transport vessel pressurized coating method, only under controlled circumstances, including the use of vacuum pressure limiting device, so that
More than the design pressure of the container, in order to rely on pressurized inert gas transportation coatings.
8.4.6 Only the connecting tube, container or dipping tank is well grounded, flammable paints and organic solvents can be injected into a metal container or dipping tank.
In the injection process, a resistance no greater than 1 × 106Ω kept grounded conductor metal container.
8.5 conveying paint pipeline system and its attachments.
8.5.1 transfer coatings used equipment, pipes, fittings, pumps or instrument shall meet corrosion-resistant, anti-static, there is sufficient strength requirements.
8.5.2 When the end of the injection material from the top of the dip tank, paint tube feeding should be within 150mm from the bottom. Delivery end of the tube should be fitted with a paint
Check valve to prevent siphoning.
8.5.3 When the infusion pump paint, should be automatic protection facilities to prevent the system pressure exceeds the working pressure piping components.
8.5.4 dip tank should be level limit means to prevent excessive feeding trough dipping.
8.5.5 The pump should work with the fire detection or automatic fire extinguishing system interlock, so that in case of fire, self-closing working pump.
9 Fire
9.1 dipping zone should install fire department approved combustible gas alarm devices and fire fighting equipment.
9.2 For tank volume is less than 0.6m3 surface area of less than 1m2 of liquid or small groove should open grooves cover or special fire-fighting equipment.
The cover should be non-combustible material, when the cover plate, and the tank should be at least overlapping width 25mm; or cuffs can buckle on the peripheral groove.
0.6m3 volu...
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