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GB 7692-2012: Safety code for painting -- Safety, ventilation and air clean-up for pretreatment process of painting
Status: Obsolete
GB 7692: Historical versions
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| GB 7692-2012 | 559 |
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Safety code for painting -- Safety, ventilation and air clean-up for pretreatment process of painting
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| GB 7692-1999 | 519 |
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Safety code for painting--Safety, ventilation and air clean-up for pretreatment process of painting
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Safety code for painting--Safety for surface preparation techniques before painting
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Basic data
Standard ID: GB 7692-2012 (GB7692-2012)
Description (Translated English): Safety code for painting -- Safety, ventilation and air clean-up for pretreatment process of painting
Sector / Industry: National Standard
Classification of Chinese Standard: C72
Classification of International Standard: 13.100
Word Count Estimation: 14,152
Older Standard (superseded by this standard): GB 7692-1999
Quoted Standard: GB/T 2493; GB 2494; GB 2894; GB/T 3608; GB/T 3805; GB 3883.1; GB 4053.3; GB 6514-2008; GB 8978; GB/T 11651; GB 12942; GB/T 14441-2008; GB 14443; GB 14444; GB 16297; GB 20101; GB 50016; GB 50058; GB 50140; JB/T 7992
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 pre-treatment process, ventilation and air purification general safety technical requirements. This standard applies to paint pre-treatment process, ventilation and air purification system design, installation, co
GB 7692-2012: Safety code for painting -- Safety, ventilation and air clean-up for pretreatment process of painting
---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, ventilation and air clean-up for pretreatment process of painting
ICS 13.100
C72
National Standards of People's Republic of China
Replacing GB 7692-1999
Safety rules for painting operations
Pretreatment process safety and ventilation purification
Safety, ventilationandairclean-upforpretreatmentprocessofpainting
2012-07-31 released
2013-03-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Directory
Preface I
1 Scope 1
2 normative reference document 1
3 Terms and definitions 1
4 Pretreatment area of paint 2
5 Pretreatment process safety 2
5.1 General requirements 2
5.2 organic solvent, gas phase degreasing 3
5.3 mechanical pretreatment 3
5.4 Pretreatment 4
5.5 steel pretreatment 5
5.6 Clear old paint 5
Pretreatment in limited space
6 Paint Pretreatment Ventilation Purification 5
6.1 General requirements 5
6.2 Pretreatment 6
6.3 Mechanical pre-treatment 6
6.4 Organic solvent vapor discharge and its purification treatment 7
6.5 steel pretreatment ventilation and its purification 7
6.6 Ventilation system 7
Appendix A (informative appendix) Calculation of air volume in shot blasting chamber 9
Appendix B (informative) Calculation of gas outflow velocity at the gap between compressed air jets 10
Foreword
In addition to this standard except 6.2.3,6.2.5.3.3.3,6.3.4.3,6.3.5, all other technical content is mandatory.
"Painting operation safety regulations" series of national standards have issued a total of 12.
--- GB 6514-2008 "Painting operation safety procedures Painting process safety and ventilation purification";
--- GB 7691-2003 "Safety Rules for Safety of Painting Operations"
GB 12367-2006 "Safety rules for painting operations electrostatic painting process safety";
GB 12942-2006 "Safety requirements for limited space operation of safety practices for painting operations";
GB/T 14441-2008 "Terminology for Safety of Painting Operations";
GB 14443-2007 "Safety requirements for coating operation of the coating drying room safety technical requirements";
GB 14444-2006 "Safety rules for painting operation of spray painting room safety technical requirements";
--- GB 14773-2007 "Safety rules for painting operations electrostatic gun and its auxiliary device safety technical conditions";
GB 15607-2008 "Safety rules for painting operations Powder electrostatic spraying process safety";
--- GB 17750-2012 "Safety of coating operations dip coating process safety";
GB .20101-2006 "Safety requirements for coating operation of organic waste gas purification device safety technical requirements."
This standard is one of the "series of safety standards for coating operations".
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB 7692-1999, compared with GB 7692-1999, the main technical changes are as follows.
--- increase or decrease, updated the cited national standards;
--- perfect the original standard "paint pre-treatment process" definition;
--- delete the original standard "limited space" definition, the contents of Table 1;
- the original standard of 5.2.8,5.2.9 were merged;
--- delete the original standard in Chapter 9 steel pretreatment pipeline 9.4,9.5,9.6, and retained the contents of the editorial changes;
--- increase the "operator should wear eye protection glasses, keep enough safe distance between each other," the terms;
- the original standard in Table 3 shot blasting chamber volume volume of the range that has been improved;
- some of the original standard of the provisions of the revised and integrated;
- the entire standard structure has been adjusted.
This standard is proposed by the State Administration of Work Safety.
This standard is under the jurisdiction of the Subcommittee on Coatings of the National Safety Production Standardization Technical Committee (SAC/TC288/SC6).
The drafting of this standard. Jiangsu Province Safety Production Science Research Institute, Zhejiang Huali Painting Equipment Co., Ltd., Dongguan Fung Motor Co., Ltd.
Division, Zhejiang Mingquan Industrial Painting Co., Ltd., Zhejiang Yu Tong developed paint Co., Ltd., Yangzhou Qionghua Environmental Engineering Equipment Co., Ltd., Suichang God
Cattle paint Co., Ltd., Suzhou Jie to organic waste gas purification Equipment Co., Ltd., Wuxi City Shunda Logistics Painting Equipment Co., Ltd., Suzhou Jie can
Environmental Science and Technology Co., Ltd.
The main drafters of this standard. Hu Yiming, Lu Jianli, Zheng Xihui, Huang Liming, Wu Zhongzheng, Jin Zaifang, Li Sheng, Gu Weidong, Chen Chunhong,
Gao Jianfei, Wang Fuxing.
This standard replaced the previous version of the standard release.
--- GB 7693-1987;
--- GB 7692-1987, GB 7692-1999.
Safety rules for painting operations
Pretreatment process safety and ventilation purification
1 Scope
This standard specifies the general safety and technical requirements for the pre-treatment process and its ventilation.
This standard is applicable to the design, installation, acceptance and use of the paint pretreatment process and its ventilation and purification system.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
Test method for grinding of GB/T 2493 grinding wheels
GB 2494 common abrasive safety rules
GB 2894 Safety signs and guidelines for their use
GB/T 3608 high operating classification
GB/T 3805 Extra Low Voltage (ELV) Limits
Safety of hand - held motor - operated electric tools - Part 1. General requirements
GB 4053.3 Safety requirements for fixed ladders and platforms - Part 3. Industrial protective railings and steel platforms
Safety rules for painting operations - Painting process safety and ventilation purification GB/T
Comprehensive Emission Standard for Wastewater
Code for selection of individual protective equipment GB/T 11651
GB 12942 Safety requirements for coating operations - Safety requirements for limited space operations
Glossary of safety requirements for painting operations GB/T 14441-2008
GB 14443 Safety requirements for coating operations - Safety requirements for coating drying room
GB 14444 Safety rules for painting operations - Safety requirements for spray booths
GB 16297 Integrated Emission Standard for Air Pollutants
Safety rules for the operation of organic waste gas purification equipment
Code for fire protection of building design GB 50016
Code for design of electrical installations for explosive and fire hazard atmospheres GB 50058
Code for design of building fire extinguisher GB 50140
Test method for appearance, dimensions and geometrical tolerances of ordinary abrasives for JB/T 7992
3 terms and definitions
GB/T 14441-2008 Definitions and the following terms and definitions apply to this document.
3.1
Pretreatment process
The entire process of coating before painting, including the rust removal of the workpiece, degreasing, chemical pretreatment, dust removal and removal of old paint
sequence. Can be divided into spray, shot blasting and pneumatic tools such as sand mill mechanical pre-treatment; degreasing, pickling, neutralization, table transfer, phosphating, passivation, anodizing, silane
Chemical cleaning and other processes of chemical pretreatment and organic solvent treatment.
3.2
Pre-processing place of work locationofpretreatmentoperation
For pre-processing operations specifically set the site and the specific surrounding space.
3.3
Pretreatment area pretreatmentarea
Flammable and flammable vapors of dangerous quantities due to pre-treatment operations, fog, dust or accumulation of flammable, corrosive
The area of the sex residue.
4 paint pre-treatment area range
4.1 Pretreatment areas should generally include the following areas.
a) mechanical spray, shot blasting chamber body and its associated with the projectile collection, lifting, dust removal system;
b) chemical pre-treatment of the process tank, the assembly line on the assembly line with a closed internal space and connected exhaust system;
c) organic solvent cleaning tank, high pressure cleaning, ultrasonic cleaning tank, gas cleaning device, electrostatic precipitator and connected exhaust system.
4.2 In addition to 4.1, pre-treatment operations still exist in hazardous areas of flammable, flammable vapor, corrosive liquids and gases and other areas, also
Should be included in the pre-painted area.
5 paint pre-treatment process safety
5.1 General requirements
5.1.1 Pretreatment The painting shall be carried out in a pre-treatment workplace or in a designated pre-treatment area.
5.1.2 In addition to large-scale components, generally should not be installed in the open-air paint before the workplace, if set to meet the requirements of this standard.
5.1.3 Pretreatment The place of work shall be set at the lowest wind direction of the whole year of the plant and shall be related to the production process.
Work, welding, assembly and other processes separated.
5.1.4 Pretreatment of workplaces shall be arranged on the side of the facade or multi-storey building near the facade.
5.1.5 with organic solvent degreasing, in addition to the old paint pretreatment workplace, respectively, belonging to A, B fire risk production areas. Workplace
Of the fire, should comply with the relevant provisions of GB 50016.
5.1.6 with organic solvent degreasing, in addition to the old paint the workplace should be a good ventilation, smoking and the introduction of fire, the operation process should not have
Battery cars, cars and metal wheel carts. Operators should wear anti-static work clothes and anti-static work shoes.
5.1.7 pre-chemical workplace, the floor should be used corrosion-resistant material laying, and should be smooth, anti-skid, easy to clean, non-seepage water.
Wastewater should be discharged into the wastewater treatment system. For the use of impregnated pickling process, the building's interior walls, columns, roof trusses and roofing should be effective
Anti-corrosion measures.
5.1.8 Pumps, fittings and piping systems and shotcrete rust (or except old paint) devices for high pressure jet cleaning equipment
Tube, according to the relevant provisions of the state for the pressure performance test and sealing performance test.
5.1.9 Paint pre-treatment operations with hand-held lighting, should comply with the relevant provisions of GB/T 3805.
5.1.10 Pretreatment The summer air temperature of the workplace shall be calculated according to the difference between the inside and the outside of the workshop. Its indoor and outdoor temperature limit should be consistent
GB 6514-2008 in the provisions of 5.1.2.2; winter according to production needs and mechanical exhaust conditions in the closed manual work area corresponding mining
Take local heating, in order to maintain the operating area of the ambient temperature of not less than 12 ℃.
5.1.11 Pretreatment The maximum allowable concentration of harmful substances in the air shall comply with the requirements of 5.1.2.1 in GB 6514-2008
Regulations.
5.1.12 mechanical method rust or removal of old paint should be set up a separate exhaust system and dust removal device, the operating personnel breathing area in the air total dust
The amount should be less than 8mg/m3.
5.1.13 Pretreatment The hygienic characteristics of the workplace are Grade 2.
5.1.14 Pretreatment Pretreatment Workplace should be equipped with continuous water emergency emergency water washing equipment.
5.1.15 Mechanical pre-treatment Rust should be limited to the use of dry sandblasting, application of shot peening and shot blasting and other processes.
5.1.16 Paint should not be used for pretreatment. Large area oil removal and removal of old paint operations should not use toluene, xylene and gasoline
Such as toxic and low flash point substances.
5.1.17 Paint The storage volume of the chemical in the pre-treatment workshop (section) shall not exceed the consumption of the two working classes. Drug storage cabinet should be
Close to the point of use.
5.1.18 Paint pre-treatment personnel should wear personal protective equipment according to GB/T 11651, when the artificial shot peening operation should be
Wear a closed rubber protective clothing and oxygen mask.
5.1.19 chemical pretreatment work in the dip water, spray water, all kinds of chemical waste discharge should be consistent with the relevant provisions of GB 8978.
5.1.20 Paint The various types of waste generated in the pre-treatment operation shall be properly handled.
5.1.21 Painting before the process used in the process of fans, pumps, motors and other noise source components and ducts, water pipes should be taken vibration, sound insulation,
Muffler, sound absorption and other measures. The noise of the pretreatment site should meet the relevant requirements of 5.1.2.6.2 of GB 6514-2008.
5.1.22 Painting with organic solvent The electrical equipment should not normally be installed in the pre-treatment area. Must be set to meet the GB 50058
The relevant provisions.
5.1.23 pre-treatment area with organic solvent operation, the area of explosive gas environment is divided into a zone of dangerous areas. It leads to open air
Doors, outside the window, the horizontal distance of 3m, the vertical distance of less than 1m space divided into two areas.
5.1.24 A closed or semi-closed paint pre-treatment process with organic solvent and well ventilated is 1 zone with an open face
, The horizontal distance of 3m, the vertical distance of less than 1m space divided into two areas.
5.1.25 with organic solvent degreasing, in addition to the old paint around the working position of 15m, with the wind tools to rust around the operating position within 5m, are not
Should be stacked flammable, explosive materials.
5.1.26 Pretreatment with organic solvents Workplaces should not use stoves, electric stoves, gas and fuel stoves and other open flames.
5.1.27 Pretreatment with organic solvent The safety mark for the prohibition of pyrotechnics shall be at the entrance of the workplace. According to the relevant provisions of GB 50140
Set fire equipment, and regularly check to maintain its effective state.
5.2 organic solvents, gas phase degreasing
5.2.1 When degreasing with flammable organic solvent, remove the battery or other power supply unit on the product or part, and the work place should be set
There are warning signs, and configure the combustible gas concentration measuring instrument, regular testing.
5.2.2 Gas-phase degreasing cleaning should be carried out in a semi-enclosed tank, there should be strict measures to prevent the escape of vapor from the cleaning solution;
Material Application Stainless steel, ceramic, flame retardant unsaturated polyester resin fiber reinforced plastic and other suitable materials.
5.2.3 Gas-phase degreasing cleaning device should have the cleaning fluid temperature and level of automatic monitoring, as well as the condenser cooling water supply monitoring equipment
Set, where the thermometer grading value should not be greater than 0.5 ℃.
5.3 mechanical pretreatment
5.3.1 mechanical rust should be preferred Shot and shot peening, to achieve the process of closed, improve working conditions.
5.3.2 manual rust with the steel brush, blade and hammer and other tools, before the operation should check the reliability. The distance between adjacent operators should be greater than
1m.
5.3.3 Where the debris from the ground 2m and above work should be carried out in accordance with the requirements of GB/T 3608.
5.3.4 Hand-held electric grinding tools for derusting shall comply with the relevant provisions of GB 3883.1.
5.3.5 derusting with pneumatic grinding or electric grinding tools, should be selected in accordance with the grinding material, wire wheel to limit its linear speed. Before the job
Should be carried out without test, test the reliability of power tools, operating procedures should always check the abrasive material loss, should not be used beyond the limit.
And comply with the relevant provisions of GB 2494. Operators should wear eye protection glasses, keep enough safe distance from each other.
5.3.6 grinding wheel, grinding, wire wheel rotation strength check should be GB/T 2493 and JB/T 7992 the relevant provisions of the implementation.
5.3.7 more than 60mm diameter pneumatic grinding machine should be set to the protective cover, the opening angle should not be greater than 150 °.
5.3.8 Shot blasting operations should be carried out in a closed shot peening chamber. Blasting chamber ventilation and dust removal system should be used with shot peened compressed air source
Interlock, only when the ventilation and dust purification system normal operation, the gas can start. Operators should generally operate outdoors when they have to enter
Into the shot peen indoor operation, should wear a closed rubber protective clothing and oxygen mask. Occupational personnel breathing area in the air dust concentration should be consistent
5.1.12.
5.3.9 Shot Blasting Chamber The enclosure shall be provided in the non-convective area by a non-friable material for the safety of the outdoor operator.
Care. Shot blasting chamber should also be set at home and abroad can control the start and stop the control switch, and set the corresponding sound and light signal device.
5.3.10 The inner wall of the shot peening chamber shall be provided with a protective plate made of wear-resistant material. With its matching spray hose should wear, anti-static.
5.3.11 shot peening room should be set to fix or move the mouth of the pellet, the particle recovery device.
5.3.12 pill, pellet recovery device should be set on the pit anti-skid cover, pit height should ensure that personnel access to safety, the pit entrance to set the activities of the cover
Board, fence, pit fixed ladder, lighting, ventilation and so on.
5.3.13 When the use of lifting devices or scaffolding for shot peening, the operator standing pedal should be a grid or steel mesh, surrounded by should be set
Set a safety rail with a height of 1.2m.
5.3.14 Shot blasting should be carried out in closed shot blasting chambers. For large-scale workpiece can be used through the shot blasting room for rust, shot blasting room out
The two ends of the mouth shall be provided with isolation sections in which the multilayer rubber curtains or other flexible barrier structures shall be used.
5.3.15 Shot blasting chamber structure, the internal wear-resistant baffle set, pellet recovery device, set pit pit, should meet the 5.3.9 ~ 5.3.12
Off regulations.
5.3.16 The blasting system of the blasting chamber should be interlocked with the shot blasting equipment. The former first start running, and then start shot blasting operations;
When the shot blasting operation is terminated, the ventilation system needs to continue to run 2min ~ 3min, the operator was allowed to enter the shot blasting room work.
5.3.17 Shot blasting room in the working state when the staff should not be close. In the through-type shot blasting chamber inlet and outlet 10m, should be GB 289......
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