On September 2nd, the circuit board industry also came to a fire accident caused by an oven exhaust pipe. Although there were no casualties, the loss was not great, but it should not be underestimated, especially in the circuit board industry, fire accidents occur frequently. Enterprises must pay attention to prevent problems before they happen. The following common safety hazards and precautions related to the production of circuit boards are available for reference to the safety facilities of the rectification enterprise.

Common security risks and preventive measures in the circuit board industry

01 circuit board chemical supply system

Common hidden dangers

Leakage, leakage, environmental pollution or personal injury, chemical burns, etc.

cause

Equipment or packaging containers are aging or ruptured, causing dripping/leakage; handling violations lead to dumping; personnel operating without wearing protective equipment causes burns; unclear and mixed placement; wrong or added drugs; chemicals do not meet safety technical requirements Pipe blockage and design defects; short circuit of electrical lines causes fire.

Common hidden danger prevention measures

1) Division, classification, sub-library storage; dedicated field, special person management; adding drugs to be confirmed and tested; inspection of outer packaging; away from fire; warehouse ventilation effect; control workshop drug storage; high and low liquid level alarm linkage And overflow recovery pipeline;

2) Carry out daily inspections on the integrity of equipment, syrup containers and pipelines: the safety person in charge of each shift (the captain or squad leader) shall conduct daily self-examination of the squad and the daily inspection and monthly inspection of the safety management department;

3) Formulate safety management regulations for handling and use of chemicals, and train employees in safe operation and safet awareness;

4) The team safety officer and safety officer conduct daily supervision and inspection of the employee's safety behavior.

02 circuit board plating

Common hidden dangers

Fire, chemical spills pollute the environment, hit the road and injure people, and get an electric shock. Cyanide exposure, inhalation poisoning.

cause

The ground is wet and slippery; the power supply equipment is aging and short-circuit; the chemical storage on the line is excessive; the heater is on fire; the high temperature of the copper-plated permanganate cylinder causes a fire, and the wrong addition of sulfuric acid, hydrogen peroxide and other contraindications occurs;

The equipment design or installation is not standardized; the equipment safety protection facilities are imperfect or the safety performance is poor and malfunctioning; the dangerous source of the electroplating line is not recognized, the preventive measures are lacking for the dangerous source; the safety operation rules are not perfect, and the employees operate illegally.

Common hidden danger prevention measures

1) Check and identify the dangerous sources of electroplating lines, conduct risk assessment, and formulate and implement prevention and control measures;

2) Formulate the safety inspection item list of the team, and the safety leader (captain or squad leader) of each shift team shall carry out the safety inspection of the team before the commencement of work, and check the validity of the safety equipment and protective facilities and the effectiveness of safety performance;

3) Install anti-collision and anti-leakage safety device facilities, develop a weekly inspection system, and implement the effectiveness of the inspection safety protection facilities for operators and equipment maintenance personnel during weekly maintenance;

4)Conduct a major security check every month.

5) Special person to add chemical formation system control; use air energy or solar heat to replace heating tube heating; non-flammable water-based cleaning agent to replace flammable and flammable solvent; electrical equipment set short-circuit protection, overload protection, ground fault protection; set flammable Gas concentration leak detection alarm device and fire alarm device.

6) Use automation instead of labor.

03 board etching

Common hidden dangers

Potion leakage, personnel poisoning, chemical burns.

cause

The ground is slippery, the equipment is aging and short-circuited, the chemical storage on the line is excessive; the heating pipe and the line are aging and short-circuit; the pipe is aging and rupture, the drug is added wrong or more; the gear mechanism of the transmission mechanism and the splashing accident; the improper protection measures , illegal operation.

Common hidden danger prevention measures

1) Installation temperature and gas concentration alarm; transmission speed is adjusted within the safe value range; installation of ventilation device; use of anti-rust and anti-corrosion materials; separate storage of solid liquid; storage of acid and alkali; installation of electrical lines as required, regular inspection, Replace aging and damaged lines in time.

2) Develop safety operation procedures and implement pre-job training and assessment.

3) Formulate a safety inspection system for the team, and the safety leader (captain or squad leader) of each class must implement the safety inspection of the team before starting work;

4) Develop a periodic maintenance system and implement regular maintenance;

5) Conduct a monthly safety check.

04 circuit board spray tin

Common hidden dangers

High-power electrical components generate heat and fire cause fire; heating pipes and lines are aging short-circuit; carbon slag or flux is excessively introduced, daily temperature is around 260 degrees, temperature is too high; residual smoke from exhaust pipe causes fire, and illegal operation causes burns .

cause

The quality of electrical components is not good, and regular maintenance or maintenance is not implemented, and illegal operation is not performed.

Common hidden danger prevention measures

1) Take good electrical components procurement and acceptance. Identify problems in a timely manner through inspections in various ways;

2) Install a fire damper on the exhaust pipe, and check its integrity and effectiveness on a monthly or quarterly basis;

3) Regularly clean the residue in the exhaust pipe every quarter;

4) Configure anti-high temperature labor insurance products, and wear protective clothing specifications for high temperature protection during operation and maintenance.

5) Add two temperature sensors for tin level monitoring to prevent dry burning of the side heating plates.

05 circuit board ink coating

Common hidden dangers

Failure or emergency operation of the emergency stop device causes the screen printing machine to be crushed/dead; there is a risk of occupational disease if the protective mask is not worn; the excessive concentration of VOC causes a fire.

cause

Electrical equipment aging is prone to short circuit, excessive flammable materials are stored on the line; poor ventilation; equipment design defects, no safety protection devices are installed, or safety protection devices are not in place, and personnel safety awareness is not strong.

Common hidden danger prevention measures

1) Eliminate the fire extinguishing source; install the static elimination device; install the carbon dioxide fire extinguishing device; do not put the glue, ink and organic solvent near the machine; keep the workshop ventilation effect good; the workshop open oil can only store the daily use; And using explosion-proof lamps;

2) Formulate and implement the team and cycle checkpoint system;

3) Regular inspection and maintenance of screen printing machine safety protection devices;

4) Implement safety education before and during the post, and strengthen the standard operation.

06 circuit board press

Common hidden dangers

Boiler explosion or high temperature oil leakage / leakage injury, fire, press safety protection device design defects or failures lead to pressure crush / death; stacking more flammable materials beside the press may cause combustion; PP flammable, under pressure It is also easy to flow glue at the same time.

cause

The equipment is aging, the wire is aging and short-circuited; there is accumulated oil grease outside the machine equipment; the press pipe has the phenomenon of dripping hot kerosene; the equipment maintenance and repair is not in place; the personnel have insufficient understanding of the hidden dangers.

Common hidden danger prevention measures

1) Establish boiler safety management system and safety operation procedures; implement daily team and cycle inspection system;

2) Check and identify the hazard sources in each link of the press-fit process, evaluate the hazard source risk value, formulate prevention and control measures for hazard sources with high safety risks, and post safety warning signs;

3) Conduct pre-job safety training and assessment for operators, and it is strictly forbidden to go to work without training and assessment;

4) The integrity of each equipment and its safety guards and the goodness of their condition must be checked before each shift. Check and maintain the safety guards weekly and monthly.

5) Reduce the storage capacity of kraft paper; install air exhaust cooling facilities in high temperature workshops.

07 circuit board baking

Common hidden dangers

The oil is accumulated in the exhaust pipe in the oven; the gas concentration in the oven is too high, causing an explosion; the maintenance in the oven is not in place or the temperature control system fails to cause fire and cause fire.

cause

Equipment maintenance is not in place, equipment components are aging, and the temperature sensor is out of order.

Common hidden danger prevention measures

1) Develop and implement daily and periodic inspection and maintenance systems;

2) Clean and maintain the inside and outside of the oven every day; weekly equipment maintenance personnel check the sensitivity and effectiveness of the temperature control system.

3) Install a fire damper on the exhaust duct.

4) Regularly check the exhaust pipe and regularly clean the residue in the exhaust pipe.

5) Monthly security check.

08 Others: drilling, milling, warehouse, canteen, dormitory, etc.

Common hidden dangers

Insufficient or damaged protective devices, personnel violations, etc. cause crushing or injury to the human body; when the needle is drilled, the hand is injured; laser cutting causes radiation; crushing, bruising, and noise during punching; improper storage of chemical syrup in the warehouse causes fire Explosion; damage to the storage container leads to leakage and corrosion; fuel and gas leaks in the canteen are burnt in the open fire; the use of high-power electrical appliances by the dormitory staff causes the electrical circuit to catch fire.

cause

There is no safety guard installed in the equipment design defect; the operator violates the rules.

Common hidden danger prevention measures

1) Develop safety operation procedures and implement safety training and assessment before the post;

2) Add safety protection devices to strengthen daily inspection and training;

3) Monthly security check.

4) Check the fuel and gas pipelines, maintain the maintenance, and set the flammable gas detection alarm at the storage place;

5) The electric circuit of the dormitory is equipped with leakage, overload and overheat protection devices; the dormitory strengthens the safety inspection and strictly controls the illegal use of electricity.

Longxiang circuit board is positioned in the professional manufacture of LED aluminum substrate, high-density exposure circuit board, high thermal conductivity aluminum substrate, FR4 composite board and other circuit boards. The company has a professional team engaged in the production of circuit boards for nearly 20 years, with many excellent engineers and professional management personnel, as well as a full set of automated production equipment and precision testing equipment for professional production of circuit boards (aluminum substrates, glass fiber boards). . The company's entire production process is self-sufficient, with a monthly output of 20,000-30,000 square feet per month. Products are widely used in LED commercial lighting, security camera light board, car light lighting, aircraft flashing lighting and new energy batteries.