1. Characteristics and needs of petrochemical enterprises

Since the 21st century, especially in recent years, petrochemical companies have gradually appeared in people's vision, and people's thinking has gradually changed and more and more attention has been paid to sustainable development. All areas of society are constantly developing and progressing, and the production of petrochemical industry is a high-risk industry. Once a fire or explosion accident occurs, it will often cause greater casualties or property losses. From a safety perspective, petrochemical companies are different from industries such as metallurgy, machinery manufacturing, infrastructure, textiles, and transportation. The materials of petrochemical enterprises are dangerous, as are the processes and media. Their safety characteristics determine higher requirements for petrochemical enterprises. For petrochemical companies, lighting is also a very important link.

2. Standard value of lighting for petrochemical equipment

3. Selection and installation of lighting fixtures

• The selection and installation of lighting fixtures should ensure safety under normal conditions, and should not cause danger to people and the environment.
• High-efficiency lamps should be selected to meet the glare restrictions and light distribution requirements
• The selection of lamps should comply with the following principles:
• In general outdoor venues, the protection level should not be lower than IP54;
• Outdoor covered venues; the protection level should not be lower than IP44;
• When the environmental pollution is serious; the protection level should not be lower than IP65;
• Anti-corrosion: Corrosive environment should use lamps with corresponding anti-corrosion grade;
• Anti-vibration: Lamps and lanterns used in a vibrating and swinging environment should have anti-vibration and anti-falling measures;
• Dustproof: lamps used in explosive gas, dust or fire hazard areas.

CESP high-quality explosion-proof led lights can be used in Zone 1 and Zone 21, Class I Class 1 and Class 2, and Class II Class 1 and Class 2 hazardous locations. They are very suitable for lighting in pharmaceutical factories.

Lighting design should fully consider the characteristics of continuity, automation, high speed, high taxes and benefits of cigarette production, as well as local dusty, humid, and high-temperature environmental conditions to ensure reliable lighting and good vision, pay attention to safety protection, and prevent electric shock and electrical Fire etc.

1. The choice of lighting method

• According to the various layout and use requirements of the craft, under the principle of satisfying the visual requirements and energy saving, the general lighting partitions, general lighting or mixed lighting, etc. shall be used respectively, but the local lighting shall not be used alone.
• The lighting methods used in major production sites are as follows:
• General lighting should be adopted in the rolling package and filter rod forming workshop; when the lamps are arranged along the production line and the installation and commissioning are low, the general lighting of the partition is declared.
• Divisional general lighting should be adopted in the workshops of threshing and redrying, silk making, tobacco flakes, and tobacco expansion.
• Some areas of the leaf threshing and redrying and silk making workshops, such as the leaf distribution table, the leaf selection table, the exit of the cutting machine, and the exit of the drying machine, should adopt mixed lighting.

2. Lighting standard value (Friendly reminder: this standard value is for reference only)

Standard value of illuminance of working surface in production and workplace

Standard value of illuminance in auxiliary room

Standard value of illuminance in open spaces and roads

3. Lighting requirements for cigarette factories

The system layout of the cigarette factory is more complicated. Therefore, in its lighting design, first determine the choice of lamps of a certain model and power, then reasonably determine the arrangement of lamps and lanterns and lamps number.

Lamp selection:

• Flameproof lamp
• Waterproof and dustproof lamps
• Anticorrosive lamps
• Shock-resistant and impact-resistant lamps

Application of CESP LED explosion-proof lighting in cigarette factories:

CESP high-quality explosion-proof led lamps can be used in Zone 1 and Zone 21, Class I Class 1 and Class 2, and Class II Class 1 and Class 2 hazardous locations. They are very suitable for lighting At the cigarette factory.

Coal washing is an indispensable process in coal deep processing. The coal mined directly from the mine is called raw coal.The raw coal is mixed with many impurities in the mining process, and the quality of coal is different. Coal with a low intrinsic ash content and coal with a high intrinsic ash content will mix. Coal washing is an industrial technique that removes impurities from raw coal, or classifies high-quality coal from inferior coal.

The products produced after the coal washing process are generally divided into gangue, medium coal, grade B clean coal, and grade A clean coal. The finished coal after the coal washing process is usually called clean coal. Coal washing can reduce the cost of coal transportation and increase the utilization rate of coal. Cleaning coal is generally an energy source that can be used as fuel. Cleaning coal is generally used for coking, which needs to remove sulfur and impurities in industrial processes to meet the standards for coking.

The purpose of removing gangue in coal is to prevent it from melting and forming agglomerates during high-temperature combustion, which can easily block the furnace or other combustion facilities, and it does not burn to reduce the heat of combustion and affect efficiency.

Selection and arrangement of explosion-proof lighting fixtures

The system layout of the coal preparation plant is relatively complicated, and the architectural design such as screening and crushing, the main plant, and the belt conveyor trestle have their own characteristics. Therefore, in its lighting design, it is first necessary to determine the selection of lamps of a certain model and power, and then reasonably determine the arrangement of lamps and the number of lamps.

• Flameproof enclosure type: The raw coal system should use LED explosion-proof lamps.
• Waterproof and dustproof type: Waterproof and dustproof lamps should be used in other workshops.
• Anti-corrosion type: It is necessary to specify that the flotation reagent storehouse should be selected anticorrosive lamps.
• Shock-proof and anti-falling: Shock-proof lamps should be used in places with heavy vibrations such as forging hammers and large bridge cranes, and anti-falling measures should be taken for lamps used in places with large swings.

CESP LED explosion-proof lighting application in coal mine:

CESP high-quality explosion-proof led lamps can be used in Zone 1 and Zone 21, Class I Class 1 and Class 2, and Class II Class 1 and Class 2 hazardous locations. They are very suitable for lighting in coal washing plants.

185W LED explosion-proof lighting design reference for coal mine lighting:

CESP is a state-level high-tech enterprise and a contract energy management company that has been filed by the three ministries and commissions. CESP strive to high quality patent product in military & industry areas, is the Top OEM & ODM supplier for explosion proof lighting solution of China and the 1st Company in China to be certify for hazardous location led lighting fixture by UL & CUL.

Due to different market certification standards, CESP divides the line lights into CES-EX-LN, CES-EX-LN02, CES-EX-LN-O2P and CES-EX-LN-02N in order to meet the demand of the whole market, which are Zone System and Division System respectively.

1. Basic product parameters

CES-EX-LN (Zone Explosion proof LED Linear Light)

CES-EX-LN02（Division Hazardous Location LED Linear Lamp）

CES-EX-LN-02P（Zone and Division Hazardous Location LED Linear Light）

CES-EX-LN-02N（Division Hazardous Location LED Linear Light）

2. Competing goods analysis

Most of the explosion-proof lamps and explosion-proof tri-proof lamps on the market are made of incandescent lamps, fluorescent lamps, high pressure metal gas discharge lamps and other lamps. This kind of lamps has mature technology and comfortable vision, and is widely used in indoor and general lighting, outdoor work lighting, but its disadvantages are obvious when working lighting.

• Poor environmental adaptability, it often fails to work normally in a low temperature environment;
• The safety factor is low, especially for gas discharge lamps such as metal halide lamps. The temperature of the lamps is high during operation, which is easy to become a hidden danger of safety accidents;
• There are many faults and maintenance is difficult. Once the lamp is damaged, it cannot be repaired in time, which will seriously affect the safety of night production;
• Poor vibration resistance and easy to damage. For example, the drilling offshore equipment has strong vibration, especially during the relocation process. The lamp tubes made of glass are often damaged and need to be replaced in large quantities, resulting in a lot of manpower and material loss, and mercury vapor and broken glass are returned to the environment. Cause harm;

With the continuous development of social productivity, LED technology continues to make breakthroughs. At present, white LEDs with luminous efficiency above 120Lm/W have been mass-produced. It has become the fourth generation of electric light sources after incandescent lamps, fluorescent lamps, and high-pressure metal gas discharge lamps, and is called the ultimate form of electric light sources.

The lamp beads used in the CESP explosion proof LED linear lamp LN series are high-quality LM80 certified chips, with a color temperature of 6000K and a color rendering index greater than 70. It can present colors and details more accurately than high-pressure sodium lamps or mercury vapor lamps. The luminous efficiency is as high as 140LM\W. such as the 50W hazard-area LED Linear light can produce 5500LM, 90° or 120° beam angle, which can meet the requirements of industrial lighting.

The copper-free aluminum alloy lamp body is powder-coated, which not only increases the strength and durability of the shell, but also improves the beautiful appearance. The combination of special heat dissipation design and LED technology helps the line lamp achieve an excellent rated life of 50,000 hours and an environmental adaptability of -40-+55°C.

The shell glass is made of high-strength tempered glass, which has been tested by internal pressure and hydraulic pressure. The anti-corrosion grade is WF2 and the IP grade is IP66. And this series of hazardous environment linear lights have multiple voltage capabilities and can work under 100-277 VAC, 50/60Hz without any special ballasts.

In general, this series of LED explosion-proof lights fixture are beautiful in appearance and powerful in function. They can accept ceiling, hoisting, pole mounting, wall mounting and other installation methods. They are very suitable for wastewater treatment, oil and gas refineries, drilling rigs, petrochemical facilities, food and beverage facilities, tunnels, outdoor wall and stanchion mounted general area lighting, and where flammable vapors, gases, ignitable dusts, fibers or flyings are presen.

3. Product Performance Analysis

For the needs of the global market, the features of the four lamps of the CESP linear lamp LN series are different.

CES-EX-LN series is a zone system with ATEX/IECEX certification flameproof enclosure explosion-proof linear lights, can be used in Zone 1&21, Zone 2&22 and other hazardous environments. Its power supply cavity and light source cavity are independent sub-cavities. The explosion-proof performance is reliable. The toughened glass is designed for impact resistance, and the thickness of 10mm can withstand an impact of 7J. And after the hydraulic test, the Zone 1 lamp has superior sealing performance, and can be suitable for working under water (3 meters).

CES-EX-LN-02 is an explosion-proof linear lights with UL certification for Division system, which can be used in Class I, Division 2, Groups A, B, C and D; Class II, Division 2, Groups F and G; Class Used in hazardous environments such as III, the toughened glass is designed for impact resistance, 6mm thickness can withstand 4J impact, super strong structural strength, with optional emergency functions, suitable for general area lighting for tunnels, outdoor walls and pillars installation. The first choice to replace traditional fluorescent lamps.

CES-EX-LN-02P is a explosion proof tri-proof lamp with UL certification for Division system and ATEX/IECEX certification for Zone system. It can be used in hazardous environments such as Class I, Division 2, Groups A, B, C and D. , And used in hazardous environments such as Zone 1&21, Zone 2&22, it is the only explosion-proof lamp in the line lamp series with North American and European standards. It is the most cost-effective linear lamp in CESP. Its mask can withstand 4J impact. The upper temperature limit can reach 130°C. It has better corrosion resistance and is suitable for lighting with lower installation heights. It is the first choice to replace traditional fluorescent lamps.

CES-EX-LN-02N is a Division system with UL certification of explosion-proof linear lighting, which can be used in hazardous areas such as Class I, Division 2, Groups A, B, C and D; although the appearance is the most in the LN series a compact linear lamps, but still strong, the design of toughened glass is impact resistant, and the thickness of 6mm can withstand the impact of 4J. It is very suitable for lighting with lower installation heights, and it is an alternative to traditional fluorescent lamps, incandescent lamps and other lamps. The product of choice.

The following is a comparison of explosion-proof signs and parameters of different systems of LN series linear lights.

4. Product appearance and naming analysis

CESP's explosion-proof lights are mainly gray in appearance. From the appearance, gray explosion-proof lamps are more beautiful and atmospheric, and adapt to the lighting environment of industrial areas, and meet the needs of target consumers for appearance colors. The name of the LN series is also simplified from the word Linear. The following is the naming connotation and nameplate analysis of each lamp.

• CES-EX-LN-W-A-B-C-D-E

CES - SHENZHEN CESP ;

EX - Hazardous Locations;

LN – Linear ;

W - Power;

A – Configuration, 01: Linear ;

B – CCT, 01:3000K; 02: 4000K; 03: 6500K ; 04: 5000K; 05: 5700K…

C- Mounting, 01:Ceiling Mounting; 02: U- bracket;

D-Color, 01: Yellow; 02: Gray…;

E-other, Commercial purpose

• CES-EX-LN-02-W-A-B-C-D

CES - SHENZHEN CESP ;

EX - Hazardous Locations;

LN - Linear;

02 - Division 2 ;

W - Power;

A – Configuration, 01:Line;

B – CCT, 01:3000K; 02: 4000K; 03: 6500K ; 04: 5000K; 05: 5700K…

C- Mounting, 01:Ceiling mount ; 02: U- bracket，;

D-other, Commercial purpose

Note 1: Use the maximum value of the ambient temperature Ta 40/45/50°C (optional according to customer requirements) and write Fahrenheit at the same time;

Note 2: The red box is only marked in the case of double cavities, and the single cavity does not need to be marked;

• CES-EX-LN-02P-WX-A-B-C-D

CES - SHENZHEN CESP ;

EX - Hazardous Locations;

LN - Linear ;

02 - Division 2 ;

P - Design features, Polycarbonate;

W - Power;

X - Size, B: 0.6m, D: 1.2m;

A – Configuration, 01:Line;

B – CCT, 01:3000K; 02: 4000K; 03: 6500K ; 04: 5000K; 05: 5700K…

C- Mounting, 01: Drop mount; 02: Ceiling mount ; 03: Wire colour; 04:Pole Mounting;

D-other, Commercial purpose

Note 1: The maximum value of the ambient temperature Ta is 45/50/55°C (optional according to customer requirements);

Note 2: The unified default is 90°C;

Note 3: Choose according to customer requirements, default NPT3/4-14;

• CES-EX-LN-02N-WX-A-B-C-D

CES - SHENZHEN CESP ;

EX - Hazardous Locations ;

LN - Linear ;

02 - Division 2 ;

N - Design features：Narrow;

W - Power;

X - Size, A: 1.2m, B: 0.6m;

A – Configuration, 01:Line;

B – CCT, 01:3000K; 02: 4000K; 03: 6500K ; 04: 5000K; 05: 5700K…

C- Mounting, 01:Ceiling mount ; 02:U- bracket;

D-other, Commercial purpose

Note 1: The maximum value of the ambient temperature Ta is 45/50/55°C (optional according to customer requirements);

Note 2: The unified default is 90°C;

Note 3: Choose according to customer requirements, default NPT3/4-14;

5. other aspects of analysis

In terms of parts procurement and supply chain, while implementing localization, it actively promotes the globalization of the domestic parts industry. The parts of explosion-proof lamps are completely purchased by manufacturers in global model factories, and the parts are guaranteed to be of high quality. During the design and production, the power supply cavity and the light source cavity were adjusted according to the explosion-proof certification requirements of different regions, and the heat dissipation system specially designed by industrial designers was used to enhance the safety performance of the explosion-proof linear lamp.

And with the continuous research and development of products, LN series explosion-proof lamps have also derived derivative products. If the customer needs the emergency function of the strip light, and wants to not affect the original installation method, you can choose CES-EX-LN-02P, built-in emergency power supply, this explosion-proof linear light neither installs nor affects the appearance, and The emergency time is around 90min,If the customer has no specific requirements for the installation method, you can also choose CES-EX-LN-02N series lamps or CES-EX-LN series explosion-proof lamps, add an independent emergency power cavity to place emergency drives and batteries, and the minimum can be used for 90 minutes, with emergency power 12W; Or customers who want better wiring and cost-saving, they can also choose CES-EX-LN-02P, which can output the wires at the same time, which perfectly solves the customer's customized needs.

The main task of the steelmaking plant is to desulfurize, dephosphorize, decarburize, and deoxidize the molten iron, and then cast the molten steel into steel billets. The hot rolling plant is an important step in the production of steel bars. It will make the steel embryos through hot rolling or cold rolling again after heating and rolling for several times, and then cut the edge and correct them to finally become steel plates.

Many hot-rolling workshops use relatively old-fashioned metal halide lamps. The lamps have low light efficiency, high power consumption, high failure rate, and large after-sales maintenance. They cannot guarantee the lighting needs of on-site production. In order to solve the lighting problems, our company is based on the actual situation. Summarize and solve the lighting problem of the hot rolling plant from the fundamental problem.

The recommended lighting level in each area of the steel rolling workshop

1. Slab library

2. Heating furnace

3. Rolling line

4. Finishing

5. Curl and pack

6. Roller repair room

7. Electrical room

Shenzhen CESP Co., Ltd. focuses on the field of special industrial lighting. It is a high-tech enterprise integrating design, R&D, production and sales. The complete management team covers the lighting fields of China's electric power, metallurgy, oil refining, railways, large industrial and mining enterprises, marine ships, etc. Provide professional lighting supporting solutions, and also provide advanced technical support and product supporting services for internationally renowned companies.

At the same time, CESP is also ATEX certified led manufacturer, UL led manufacturers and IECEX certified led supplier. The company’s products include explosion proof LED flood light, explosion proof led highbay light, explosion proof led canopy light, explosion proof led linear light, explosion proof portable hand light etc. If you have explosion-proof lighting needs, you can click on the page to contact us, or call our hotline +86-755-83509822.

Containers, also known as cargo loading, can not only be used to transport goods by sea or land, but are also often used as simple mobile houses; the existing lighting system of house containers usually installs lights on the top of the house container.First of all, we must understand that the container has several advantages:

1. Introduce modern home furnishing elements, taking a single cabinet as a unit, which can be combined and superimposed in any combination. The performance of sealing, sound insulation, fire prevention, moisture resistance, heat insulation, etc. should be better.
2. The overall structure, welded and fixed, is stronger and safer, more wind-resistant, and more earthquake-resistant. It will not fall apart or collapse in the event of typhoon, earthquake, ground subsidence and other disasters.
3. The whole box can be hoisted, no concrete foundation is needed, 15 minutes installation, 1 hour check-in, and it can be used when it is connected to the power supply.
4. Floors, walls, ceilings, water and electricity, doors and windows, exhaust fans and other one-time decoration, permanent use, energy saving, environmental protection and beautiful.
5. The design is more user-friendly, living and working are more comfortable, and the number of rooms can be increased or decreased at any time, which is convenient and flexible.
6. The relocation does not need to be dismantled. The items in the room can be moved with the box without loss. It can be hoisted and moved more than a thousand times, which is convenient and saves money.
7. After the decoration of the container, the inner area is about 13 square meters, and each container is 12,000 yuan, which is nearly 900 yuan per square meter. Compared with the current housing prices in many places, it is very cheap.

In 2018, the US "Business Weekly" listed 20 important inventions that are most likely to change our way of life in the next 10 years, and the container house ranked 19th. The US "Business Weekly" said: "Using containers to rebuild houses, this invention can solve the housing problem of hundreds of millions of poor families. At present, a container house with a usable area of 30 square meters sells for less than 10,000 US dollars."

According to statistics, there are about 18 million steel containers floating on the sea or on roads to transport goods in the world. In addition, there are about 2 million containers in idle state. All containers will eventually be eliminated. However, they are very sturdy, because they must be able to carry a weight of 30 tons to sail at sea. If they can be reused effectively, it will not only save costs, but also save resources and protect the environment. For the port, container transportation is one of the main transfer methods of the port.

Except for dangerous goods containers, although the probability of fire in the port loading, unloading and storage of ordinary goods containers is low, there are still many factors that lead to the occurrence and spread of fires. These complex factors are intertwined, making it very difficult to save.

1. Possible causes and cases of container fires

• Burning caused by carton

The cargo in some containers is packed by cardboard. These packaging cardboards are spontaneously combustible substances, and they are usually made of raw materials such as rice straw, wheat straw, and reeds. These raw materials are grass-like plant fibrous substances, which are composed of cellulose, hemicellulose, lignin and a small amount of pectin, resin and wax. Under the condition of high water content, biological, physical and chemical can occur. Change and release a lot of heat. The container has a certain degree of airtightness. In summer, the temperature inside the box can reach 50. When the temperature difference is large, the wall of the box will “sweat” and water will accumulate at the bottom of the box. In addition, the heat generated by the products packaged in the cardboard will also cause the cardboard to burn. At 19:00 on September 7, 2004, the Liberian container ship "China Ocean Hong Kong", which was parked at the terminal of Shanghai Port Container Waigaoqiao Branch, was heated by unqualified rechargeable nickel-metal hydride batteries loaded in a container in the cabin. , The heat cannot be dissipated in time, and the heat gathering effect will ignite the cardboard packaging materials, causing a direct loss of RMB 3.1 million.

• Smoldering and spontaneous combustion of cotton and hemp

Packed cotton, whether in transit or in stacks, will not spread quickly after being caught in a fire, sometimes due to insufficient oxygen supply. The combustion is often carried out slowly in a local or small area. In this kind of combustion, no flames or smoke can be seen, and it is in a smoldering state. It can last for several days or even dozens of days without being easily noticed. But when the smoldering cotton suddenly encounters air convection, not only can the smoldering cotton become completely burnt quickly, but it can also cause the mixture of carbon monoxide and air to deflagrate. Cotton can also ignite spontaneously. The reason is that cotton will inevitably be infected with a large number of microorganisms during the process of picking and processing. Under humid conditions, microorganisms are easy to grow and reproduce, and when the water content in the cotton fiber is appropriate, the microorganisms can grow and reproduce rapidly, secrete cellulase and acid, generate heat, and make cotton moldy and change color. Over time, if the accumulated heat does not dissipate, and the temperature gradually rises, spontaneous combustion will occur. Hemp fiber plants such as jute, hemp, sisal and cotton have similar characteristics, and they also have smoldering and spontaneous combustion.

• Oxidation and spontaneous combustion of chemical products caused by heat and moisture

Containers are generally stacked in open yards, so they have to withstand the sun and rain. Especially in summer, the highest temperature in some areas can reach more than 40 ℃, while the surface temperature is higher. Under such high temperature, the temperature inside the container can reach 50°C. At this time, some chemical products in the container, such as high-nitrogen fertilizers, fish meal, etc. will be easily thermally decomposed and oxidize and spontaneously combust. In addition, the "sweat" of the tank wall will also cause the chemical products to be damp and cause oxidation and spontaneous combustion. At 13:00 on July 16, 2004, the sodium disulfite in the container of the "Nantai 27" vessel berthed at the No. 5 anchorage of Guiyu West, Shantou Port, Guangdong Province, China was spontaneously ignited due to moisture, causing 3 people to be injured and a direct economic loss of RMB 2.068 million yuan.

• Personnel operating errors cause fire

Improper operations such as container maintenance and cargo disinfection can also cause fires. The container is inevitably damaged during transportation. If the maintenance personnel accidentally splashes on combustibles during electric welding and gas welding operations, it will cause a fire; when performing operations such as disinfection of flammable and explosive goods in the container, violation of relevant regulations Improper handling can also cause fires. At about 18:40 on July 10, 2002, workers at the Fuyong dock in Shenzhen, China, improperly detonated the container while disinfecting the incoming container that had just entered the terminal, causing another 13 adjacent to the fire and explosion container to contain scrap hardware and waste. Plastic containers were also ignited by the fire. Three dockers were burned and seriously injured.

• Lightning strikes and fires

The open-air cargo yard where the containers are stacked is a large open area, which is extremely vulnerable to lightning strikes. If there is no lightning protection device installed in the open yard, the container may be struck by lightning and catch fire.

• External fire and man-made arson

In order to facilitate mechanized loading and unloading, container transportation packs the loose goods to be transported in boxes in advance. If the goods are not inspected before packing, it is possible that the kind of fire touched during transportation will be entrained into the box, which may cause a fire. In addition, it has been found from the investigation of fire causes over the years that man-made arson accounts for a certain proportion, so man-made arson may also be one of the causes of container fires.

2. Container fire spreading method

Container fires will spread mainly through heat conduction, but also through heat radiation, explosion splashing, and melting of combustibles.

• Heat Conduction

There are three ways to transfer heat energy in a fire, and heat conduction is one of them. Most of the existing container manufacturing materials all over the world are aluminum alloy and steel plate. This kind of metal material has a large thermal conductivity. Therefore, once a certain container catches fire, the heat energy will first be transferred to the adjacent container through heat conduction. As the heat accumulates, the combustible materials in the adjacent container will be ignited. If the lower container catches fire first, the load-bearing capacity of the upper container will be reduced due to thermal deformation, and the upper container will easily collapse, and the combustibles loaded on it will be ignited after it is scattered.

• Thermal radiation

When the fire reaches a certain scale, the spread of the fire through heat radiation will become more significant. With the expansion of the fire, the heat radiation of the fire source to the nearby combustibles is also increasing. When the radiant heat increases to a certain extent, the combustible materials at a certain distance from the fire source will be ignited by receiving enough radiant heat flow.

There are many types of cargo loaded in containers, and the heat transferred through radiation is blocked by the container shell, so it is difficult to determine the minimum heat flow value for combustible materials ignited by radiation.

• Explosion splash

Explosion refers to a process in which physical energy and chemical energy change rapidly in a certain space or state, and in this process the resident energy in the system is rapidly converted into kinetic energy, mechanical energy, light and thermal radiation. Therefore, explosion can also be said to be an extremely rapid process of physical or chemical energy release. After a fire occurs in a container, the flammable gas generated cannot be fully burned or released, and higher temperature and pressure will accumulate in the container, which may cause an explosion because it is not easy to dissipate heat and release pressure. Some explosive fragments, such as flaming steel bars, burning goods, etc., will further expand the fire if they fall on other combustible materials.

• Melting of combustibles

Rosin, glass, beeswax, pitch and other substances do not have a certain melting point and freezing point, and are called amorphous. Since there is no melting point or freezing point, it changes from hard to soft during the endothermic process, and then gradually becomes liquid. During the entire melting process, the temperature continues to rise. In a container fire, non-crystalline goods melt and become liquid after absorbing a lot of heat. The container is usually not completely sealed. If these high-temperature liquids flow through the gaps to other combustibles, the fire will spread.

3. Factors for the expansion of container fires

• The fire-fighting facilities of the container yard are not sound

The unsoundness of fire-fighting facilities in container yards has both objective and subjective reasons. The objective reasons are mainly due to geology and the construction method of the wharf, which make it difficult to lay fire hydrants and pipelines on the wharf, or the setting of fire water sources is unreasonable, and the design of fire water consumption is not compatible with actual needs. Due to the limited geographical location of ports, most port container yards are reclaimed from the sea, and settlements will occur to varying degrees over time. The fire-fighting pipelines laid under the large slabs of the container terminal-gravel concrete) caused serious leakage of pipelines due to uneven settlement, and it was very difficult to repair under the large slabs of the yard. In this case, most ports have closed the pipeline Valve approach to prevent the waste of water resources and protect the yard.

The lack of special fire protection regulations for container yards is also one of the factors restricting the perfection of fire protection facilities in container yards. At present, China's container yard is mainly designed in accordance with the national standard "Code for Fire Protection Design of Jianzhu" (GB 50016-2006), but the standard does not clearly stipulate the design parameters of the fire water supply of the container yard, resulting in the actual design and use process Different designers use different water supply rates. This is likely to cause the designed fire fighting water consumption to be incompatible with actual needs. If the designed water supply is too large, it will cause a waste of investment, and if the designed water supply is less than the actual need, once the yard catches fire, it will greatly affect the fire fighting effect.

On the other hand, the unsound fire-fighting facilities are also caused by the subjective reasons that the relevant departments do not pay attention to. Because the probability of fire in the container of ordinary goods other than dangerous goods is low, this makes some relevant personnel paralyzed and neglects the daily inspection and maintenance of fire-fighting equipment.

• The alarm is not timely and the effectiveness of fire fighting is poor

Containers are often stacked in multiple layers, generally 4-5 layers high. If a certain container inside the yard fires first, it will be difficult to find out from outside the yard in time, and the fire may have developed to a certain scale when it is discovered. Moreover, since the fired container may be inside the yard, it is difficult for the sprayed fire-fighting water to effectively act on the fired container box. In addition, container fires are often caused by the cargo inside the container. Even if a certain container outside the yard catches fire first, due to the tightness of the container and the densely packed cargo, the firefighters will not be able to effectively extinguish the fire. The surface of the container can be cooled by jet water jets. The thermal conductivity of metal will quickly spread the fire to the surrounding area, increasing the difficulty of fire fighting.

• The container has good sealing performance, which may cause an explosion in the event of a fire

The container has good airtightness. Therefore, once a fire occurs inside the container, the flammable gas generated cannot be fully burned or released, and higher temperature and pressure will accumulate in the container, which may cause an explosion. Because the explosion is a violent physical and chemical change, accompanied by the generation of light, heat, and pressure, and causes dissociation and hypoxia in the explosion area, it has a great destructive effect. The fired objects splashed by the explosion will not only expand the fire area of ​​the fire, but also directly affect the personal safety of firefighters. In order to avoid casualties, firefighters often have to temporarily evacuate or stay away from the burning container to carry out fire fighting, which will affect the fire fighting effect and delay the fire fighting opportunity.

• The seaside wind speed is relatively high

The container yard is open and built near the sea, so the wind in the yard is relatively high, and sometimes typhoons may occur. Such weather conditions will not only promote the spread of fires, but are also not conducive to fire fighting.

Through the above analysis of container fire hazard and previous fire cases, it can be known that it is difficult to extinguish a container after a fire occurs and the water demand is large. Therefore, the container yard must be equipped with stable and reliable fire-fighting facilities and relatively stable safety facilities, such as anti-corrosion and dust-proof transportation. Belts, explosion-proof lamps with high safety, cranes with strong bearing capacity, etc.

Shenzhen CESP Co., Ltd. focuses on the field of special industrial lighting. It is a high-tech enterprise integrating design, R&D, production and sales. The complete management team covers the lighting fields of China's electric power, metallurgy, oil refining, railways, large industrial and mining enterprises, marine ships, etc. Provide professional lighting solutions, At the same time, it also provides advanced technical support and product supporting services for well-known international companies. CESP's products have obtained the North American UL certification, the European Union ATEX certification and the international IECEX certification, It is very suitable for general area lighting installed in wastewater treatment, oil and gas refineries, drilling rigs, petrochemical facilities, food and beverage facilities, tunnels, outdoor or indoor installations, as well as places where flammable vapors, gases, combustible dust, fibers or flying exist Use in hazardous areas.

CES-EX-J series explosion-proof LED floodlights are safety-increased and flameproof enclosure lights. The shell is made of high-strength aluminum alloy + tempered glass, which has stronger vibration and impact resistance. The designer took into account the heat dissipation performance of the explosion-proof lamp, and designed the back of the lamp to have a corrugated effect, so that the efficiency and service life of the lamp tube can withstand higher mechanical strength and temperature changes. This hazardous area LED floodlight complies with UL1598A marine-grade certification. The sealed structure prevents water vapor from entering the lamp body. It complies with IP68 and WF2 standards and is very suitable for humid salt water and corrosive environments. The floodlighting device has passed the precise light distribution design and good optical system, coupled with the excellent 3D heat dissipation structure design, so that this high-power hazardous area floodlight has the best lighting level and the lowest maintenance cost, and There are a variety of installation methods and a variety of luminosity for users to choose, It is very suitable for use in hazardous environments such as local lighting, low-rise lighting, stairwells, gantry and walkways, craft skids, cable tray areas, low-overhead marine void spaces, paint and solvent storage rooms, gas stations, offshore oil and gas platforms, and chemical industries.

If you have related lighting needs, you can contact us directly, or call our hotline, we will provide quality services and lighting solutions that meet your needs.

The port is an important transportation hub and a window to realize an export-oriented economy. China’s major ports have occupied an important position among the world’s ports. The container throughput has been ranked first in the world for many years, becoming the world’s largest port and container throughput. , The fastest growing country. As the economy continues to grow, energy conservation, emission reduction, and efficiency improvement have become urgent requirements for China and the world. For example, the power consumption of lighting in the Shanghai International Port Area is as high as 5.94 million KWh. Port companies have always been large energy consumers in the transportation industry. Energy saving has become one of the important means for port companies to enhance their international competitiveness in the new era. Therefore, the solution to port lighting Is the top priority.

1. Lighting standards

The dock lighting standards for different purposes will be different. The following only gives the lighting standards for general areas.

The wharf is located along the river and the ocean, and the air humidity is relatively high, and the erosion of salt fog and oceanic climate is serious. In addition, port refineries, also known as seaside oil refineries, are usually flammable and explosive, but because they are close to the sea, corrosion prevention needs to be considered. Especially near the southeast coastal areas of China, there are more typhoons and heavy rains, and the climatic conditions are harsh. At the same time, in the docks that transport bulk goods (coal or grain), there is the diffusion of fine particles, which will cause serious dust pollution. These are all factors that need to be considered when designing lighting. The lamps and lanterns used in the dock should meet the following requirements:

• High power: Because the height of the gantry crane is about tens of meters, it has the characteristics of wide adaptability and large working range. In order to meet the illumination requirements of the working surface, the power of general fluorescent lamps should be above 400W, and the power of LED lamps should be Above
• Long life: Due to the high height of the gantry crane, it is not easy to repair the lamp after it is damaged, so it is necessary to install a lamp with a long service life.
• Safe and reliable: There are many types of goods on the port terminal and the environment is complicated. It is necessary to configure safe and reliable lighting fixtures to ensure the lighting safety of the port terminal and prevent fire incidents caused by the short circuit of the lamps.
• High protection level: The port is in a humid environment all the year round, so the requirements for the waterproof and dustproof level of the lamps are relatively high. The lamps with high protection level can prevent water vapor from entering the lamp body and prolong the service life of the lamps. The lamp shell is made of high-quality aluminum alloy die-casting, and the outer surface is treated with high-voltage electrostatic spray, which improves the overall anti-corrosion level of the product. The whole lamp has an independent heat dissipation system and the drive is external. Waterproof, so that the protection level of the lamp reaches IP65, without fear of the humid environment of the port terminal. The anti-corrosion level of lamps needs to reach the WF2
• The light source and accessories are easy to replace.
• Lamp parts have good anti-corrosion performance.
• The lamp is installed stably and has good wind resistance.
• Unless otherwise specified by the owner unit, lamps must comply with the latest national standards (GB), International Electrotechnical Commission (IEC) standards and International System of Units (SI) standards.

2. Selection of lamps

3. Simulation lighting

In the simulation, the coal operation terminal is taken as an example, and the simulation is carried out in various scenarios. The simulation results are as follows:

• Ship unloading dock

The unloading dock should not only illuminate the belt conveyor belt above, but also illuminate the side road. The lamps are installed on the brackets outside the conveyor corridor.

3D renderings and pseudo-color images

Calculation results

• Trestle

The trestle bridge is mainly for road lighting, so street lights can be used.

3D renderings and pseudo-color images

Calculation results

• Transfer building

Because of the power limitation of the belt conveyor, the belt length is limited, or the direction of the belt conveyor needs to be changed, the transfer building needs to be transferred. Because the transfer building is operated by humans, the illuminance requirements are high, and it needs to reach more than 100lx.

3D renderings and pseudo-color images

Calculation results

• Yard

The storage yard is generally a storage area for items, and the common lighting method is high-pole lighting.

3D renderings and pseudo-color images

Calculation results

• Loading dock

Ship loading docks generally illuminate the ship’s deck and navigation channels in inland river basins. Street lights or floodlights can be used.

3D renderings and pseudo-color images

Calculation results

4. Pictures of the scene

Loading dock

Unloading dock

Shenzhen CESP Co., Ltd. focuses on the field of special industrial lighting. It is a high-tech enterprise integrating design, R&D, production and sales. The complete management team covers the lighting fields of China's electric power, metallurgy, oil refining, railways, large industrial and mining enterprises, marine ships, etc. Provide professional lighting supporting solutions, and also provide advanced technical support and product supporting services for internationally renowned companies. CESP’s products have obtained North American UL certification, EU ATEX certification and international IECEX certification, which are very suitable for general area lighting installed in wastewater treatment, oil and gas refineries, drilling rigs, petrochemical facilities, food and beverage facilities, tunnels, outdoor or indoor installations. And use in places where flammable vapors, gases, combustible dust, fibers, or hazardous areas exist in flight.

The CES-EX-GB02 series explosion-proof high bay lamp body has a protection level of IP66 and an anti-corrosion level up to WF2. It is equipped with a corrosion-resistant high-strength aluminum alloy shell, which has good durability, vibration resistance, impact resistance and marine corrosion resistance.It is very suitable for salt water and corrosive environments. Although this explosion-proof lamp is a high-power LED high bay lamp, the power supply adopts wide voltage processing, can work under 100-277 VAC, 50/60Hz, and realizes constant current output. It has short-circuit and over-voltage protection functions, which greatly extend the lamp Service life. The explosion-proof LED high bay light shell is specially designed for heat dissipation, thereby improving the efficiency and service life of the LED lamp. The tempered glass cover is anti-glare design, with high illumination uniformity, no ghosting, effectively avoiding glare, spot and aperture, and does not damage the light efficiency . It is suitable for various low ceilings, platforms, high ceilings, high sheds and other places as solid lighting.

The CES-EX-J series of explosion-proof floodlights adopt a sealed structure with high waterproof and anti-corrosion performance. They comply with UL1598A marine certification and are very suitable for salt water and corrosive environments. Precise light distribution design and good optical system, coupled with excellent 3D heat dissipation structure design, make this high-power hazardous area floodlight, compared with traditional explosion-proof lighting fixtures, have the best lighting level and the lowest maintenance cost . As an increased-safety and shell-protected explosion-proof lamp, it can be used under T4 ambient temperature, and the shell is made of die-cast aluminum. The designer took into account the heat dissipation performance of the explosion-proof lamp, and designed the back of the lamp with a corrugated effect. It can work under the environment of -40℃-55℃, with longer life span, which can reach more than 50,000 hours. Obtained UL844/ATEX/IECEX certification, and guaranteed a five-year warranty, this makes this hazardous area floodlight very suitable for local lighting, low-level lighting, stairwells, gantry and walkways, craft skids, cable tray areas, low-overhead ocean void spaces, paint and solvent storage rooms, gas stations, offshore oil and gas platforms , Chemical industry and other hazardous  environments.

CESP also has lighting solutions for offshore drilling and oilfield joint stations. If you have related lighting needs, you can contact us directly or call our hotline. We will provide quality services and lighting solutions that meet your needs.