The lighting system is one of the branches of the power system of the offshore platform, which is directly related to the safety production of the platform and the quality of life of the staff. This paper briefly introduces the selection, installation method, lighting arrangement, system power supply requirements and control of the lighting system of the offshore platform.
CESP LED Explosion proof Lights for Drilling Platform
The protection level and explosion-proof level of the lamp housing shall be suitable for the installation site and shall meet the following requirements:
The minimum requirements for the protection level of indoor dry spaces should meet IP23;
Positive pressure ventilation (Exp), flameproof (Ex d) and intrinsically safe (Ex "ia" or "ib") are available in Class 1 hazardous areas. Increased safety (Ex e), positive pressure ventilation (Exp), flameproof (Ex d) and intrinsically safe (Ex "ia" or "ib") are available in Class 2 hazardous areas.
Some marine lighting fixtures and explosion proof lights from CESP for you reference. or you can send the project requirement to us directly.
The types of lighting fixtures for offshore platforms can be divided into: fluorescent lamps, high pressure sodium lamps, metal halide lamps, emergency exit lamps, aircraft deck boundary lamps, windsock lamps, etc. Each type of lamps is used in different locations. The following mainly introduces fluorescent lamps and high pressure sodium lamps. , the installation of emergency exit lights.
The number and location of lamps in each area depends on the average illuminance of the room. Different areas and rooms have different illuminance requirements. The average illuminance of each area on the platform is as follows:
Area |
Normal lighting (average illuminance) |
Staircase/passage area |
100 Lux |
Restrooms/toilets/changing rooms/other areas |
100 Lux |
material storage area |
100 Lux |
occupancy cabin |
150 Lux |
machinery spaces |
150 Lux |
Dining Room/Infirmary/Office/Control Room/Telegraph Room |
200 Lux |
kitchen |
300 Lux |
Frequency conversion room/electrician room/distribution room |
300 Lux |
On the basis of the selected lighting fixture model, power and quantity, the cabin lighting fixtures can be arranged. While arranging, the environmental conditions of the cabin should be fully considered, and the main body should be illuminated evenly if possible. Due to the limited space in the cabin, in addition to lighting fixtures, there may be air conditioning vents, fire detectors, speakers, etc. on the ceiling. Therefore, the arrangement of lamps and lanterns must be carefully coordinated with the relevant professions. Make the lighting reasonable, beautiful and applicable as much as possible. When there is only one light in the cabin, it is generally arranged in the center, or close to the working position, and avoid placing it above the bed or in a position that may be severely blocked; when there are two or more lights in the cabin, it is In order to make the lighting of the whole room uniform, and considering the appearance of the cabin, the layout is often symmetrical. The arrangement of multiple lamps can be arranged in a right-angle or checkerboard arrangement as shown in the following figure:
The layout of other areas of the platform lighting fixtures should pay attention to the following aspects:
CESP Case: CNOOC - Oilfield & Offshore Lighting Engineering Project
Lighting can be divided into: normal lighting system, emergency lighting system, temporary emergency lighting system. The normal lighting switchboard shall not be placed in the same space as the emergency lighting switchboard. Except for personnel living spaces, the emergency light points in other spaces of the platform should be higher than at least 1/3 of the total number of light points in the room. Each lighting circuit shall be provided with overload and short circuit protection. Each lighting switchboard with a capacity greater than 16A should have no more than one last shunt power supply lamp.
The number of points of the last shunt-supplied lamps with a capacity less than or equal to 16A shall not exceed:
For circuits of 50V and below: 10 points
For 51~120V circuit: 14 points
For 121~250V circuit: 24 points
The power supply lamp head is close to the final shunt of the clustered cornice lighting, wall lamps, electric signs, etc. If the maximum working current does not exceed 10A, the lamp points supplied can be unlimited. The last branch of the lighting circuit should not supply power to electric heating and electrical equipment, but for small kitchen equipment (such as bread toasters, small mixers, coffee pots), small electric motors (such as desk fans, cabin fans, refrigerators) ), wardrobe heaters and the like may be excluded. For large machinery spaces, large galleys, passages (including entrances and exits), stairways leading to lifeboat decks and public spaces, the lighting is to be powered by at least two final branches for lighting. When any one of the routes is not powered, the other route should still be able to maintain the above necessary lighting.
The lighting system of the offshore platform directly affects the overall quality of the platform, so the lighting design must not only be meticulous, but also pay attention to methods, make overall arrangements, and follow specifications.
Marine Grade Explosion proof LED Flood Light | Class 1 Division 2 Light | Anti-Corrosion
CESP marine-grade LED lighting fixtures, through electrophoresis technology, are coated with a non-metallic paint-like coating on the surface of the lamp body, which makes the appearance of the lamp flat, smooth, corrosion-resistant and impact-resistant. Then, apply multiple coats of marine anti-corrosion paint to enhance corrosion resistance. In addition, the mounting brackets and accessories are made of 316 stainless steel to protect the lamps and lanterns from long-term harsh salt water and atmospheric corrosion in the marine environment.
Application:
• Applies to hazardous locations of Class I, Division 2 with explosive gas atmosphere.
• Applies to marine locations, non-recessed outside type (salt water).
Warning:
CUL for Hazloc:
UL for marine locations:
Have certified CES-J fixtures with the NEC and CEC standards for hazardous location and environments
Certifications and compliancesfor marine locations:
• Damp and wet locations;
• Certification body:UL
• Certification Mark:UL
• Certificate No:E495071
CESP marine-grade lights comply with China Classification Society (CCS) standards and have obtained UL1598A marine certificate. They can be used for the most demanding exterior lighting marine environments, including sea bridges, offshore drilling platforms, ships, seaside refineries, seaside shipyards, docks, or other acid rain, seawater and salt spray corrosive environments.
Product process:
CESP marine-grade LED lighting fixtures, through electrophoresis technology, are coated with a non-metallic paint-like coating on the surface of the lamp body, which makes the appearance of the lamp flat, smooth, corrosion-resistant and impact-resistant. Then, apply multiple coats of marine anti-corrosion paint to enhance corrosion resistance. In addition, the mounting brackets and accessories are made of 304 stainless steel to protect the lamps and lanterns from long-term harsh salt water and atmospheric corrosion in the marine environment.
Remark: Electrophoresis (EP) is the abbreviation of electrophoresis, which refers to the phenomenon in which charged particles move toward electrodes with opposite electrical properties under the action of an electric field. The technology that uses charged particles to move at different speeds in an electric field to achieve separation is called electrophoresis.
Explosion-proof standard:
Applies to hazardous locations of Zone 1 and Zone2 with explosive gas atmosphere, and hazardous locations of Zone 21 and Zone22 with explosive dust atmosphere.
ATEX: EN IEC 60079-0-2018; EN 60079-1-2014; EN 60079-28-2015; EN 60079-31-2014;
IECEx: IEC 60079-0-2017; IEC 60079-1-2014; IEC 60079-28-2015; IEC 60079-31-2013;
IECEx & ATEX :
Have certified CES-EX-GB fixtures with the IECEX and ATEX standards for hazardous location and environments.
1 Scope
This standard specifies the requirements for the classification, type, size, material, color, use and management of safety signs for mining products.
This standard applies to mining products that have been included in the management of safety signs and have obtained safety signs.
2 Terms and Definitions
The following terms and definitions apply to this standard.
2.1 Mining Products
The general term for equipment, materials, and instruments used in mines.
2.2 Mining Products Safety Label
Graphical and numerical codes for safety signs for mining products.
3 General requirements
3.1 The mining product safety sign management system is a mandatory management system for mining products involving workplace safety and worker health. All mining products included in the safety sign management can only be obtained after obtaining the mining product safety sign. production, sale and use.
3.2 The safety mark of mining products is a certificate that confirms that the mining products conform to national standards and industry standards, that production units are permitted to produce and sell, and that users purchase and use them.
3.3 The mining product safety sign consists of two parts: the mining product safety sign certificate and the mining product safety sign.
3.4 Mining product safety signs and logos (hereinafter referred to as "logos") are special signs that indicate that mining products comply with national standards, industry standards and relevant regulations on mine safety production.
For the production of mining products that are included in the management of safety signs, the signs can only be used after obtaining the safety signs of mining products.
3.5 Products that have obtained safety signs for mining products can only be sold by the production unit after the label is applied, and purchased and used by the user unit.
4 Identification Types
The identification is divided into safety signs for coal mine products and safety signs for metal and non-metal mine products, and there are standard and non-standard types.
4.1 Coal mine product safety signs
The standard identification is a hexagonal frame with the Chinese Pinyin abbreviation "MA", which means "coal safety". The frame line indicates that the scope of coal mines in the country is applicable, and the digital code is the safety sign number, as shown in Figure 1.
4.2 Safety signs for metal and non-metal mine products
The standard identification is a hexagonal frame with the Chinese Pinyin abbreviation "KA", meaning "mine safety", the frame line indicates the scope of the national metal and non-metallic mines, and the digital code is the safety sign number, as shown in Figure 2.
5 Identification graphics and parameters
5.1 Standard identification
5.1.1 The standard logo graphics and parameters are shown in Figure 3 and Figure 4.
5.1.2 There are five specifications for the standard type identification, and the ratio of each specification size to the marked size in Figure 3 or Figure 4 is shown in Table 1.
5.1.3 The digital code (safety sign number) is marked below the hexagonal frame, at the center of the sign.
5.1.4 The standard logo is a yellow base plate, and the frame and "MA" and "KA" are black.
5.2 Non-standard identification
When it is inconvenient to use standard logos, non-standard logos can be applied to products by means of printing, molding, branding, etc. The position of the digital code, graphic size, color and whether to use a hexagonal frame can be determined according to specific circumstances.
6 Identify other requirements
6.1 Marking material
Standard signs should be made of materials permitted by mine safety, generally brass or stainless steel.
6.2 Identifying the surface quality
The identification should be clear and free of burrs.
7 Use of the logo
7.1 The logo should be applied to the obvious position of the outer body of the product, and the selected specifications should be compatible with the overall dimensions of the product.
7.2 For cables, conveyor belts, pipes, air ducts (cloth) and other products, the distance between the markings shall not be greater than 10 m, and there shall be no less than one marking in the minimum use unit of the product.
7.3 If the logo cannot be applied on the product body, the logo should be applied on the smallest package of the product.
7.4 Mining products that have obtained safety signs shall be marked before leaving the factory; imported mining products that have obtained safety signs in batches shall be marked before the products are delivered for use.
8 Management of logos
8.1 The labels shall be uniformly managed by the state-authorized mining product safety label review and issuance agencies.
8.2 For non-standard signs, the production unit that has obtained the safety sign shall apply to the state-authorized mining product safety sign review and issuance agency, and can only be used after confirmation and filing.
8.3 Mining products managed by Vanner Safety Signs shall not use the signs without obtaining the safety signs of mining products.
1) The general control room of Class A and B workshops with explosion hazard shall be set up independently.
2) The sub-control rooms of Class A and B workshops with explosion hazard should be set up independently. When set adjacent to the outer wall, a fire partition wall with a fire resistance rating of not less than 3.00h should be used to separate them from other parts.
1) Class A and B production sites with explosion hazard should be arranged near the pressure relief facilities near the outer wall of the single-storey factory building or the pressure relief facilities on the top floor of the multi-storey factory building near the outer wall.
2) The equipment with the danger of explosion should avoid the main load-bearing components such as beams and columns in the workshop.
3) Protective measures such as door buckets should be installed in the stairwells, outdoor stairs in the explosion-hazardous area, or the connection between the explosion-hazardous area and the adjacent area. The partition wall of the door bucket should be a fire partition wall with a fire resistance rating of not less than 2.00h, and the door should be a Class A fire door and should be staggered from the door of the stairwell.
1) For Class A workshops that emit flammable gas and flammable vapor lighter than the air, light roof panels should be used as the pressure relief area. The ceiling should be as flat as possible without dead ends, and the upper space of the workshop should be well ventilated.
2) Class A workshops that emit flammable gases and flammable vapors heavier than air and Class B workshops that have the danger of dust and fiber explosion shall meet the following requirements:
A non-sparking ground should be used. When using insulating material as the overall surface layer, anti-static measures should be taken.
For workshops that emit combustible dust and fibers, the inner surface should be flat, smooth and easy to clean.
It is not advisable to set trenches in the workshop. When it is really necessary, the cover should be tight. The trenches should take effective measures to prevent the accumulation of combustible gas, combustible vapor, dust and fibers in the trenches, and should be sealed with fireproof materials at the connection with the adjacent workshop.
1) For workshops that use and produce Class A, B and C liquids, the pipes and trenches should not be connected with those of the adjacent workshops, and oil separation facilities should be set up in the sewers.
2) Class A, B, and C liquid warehouses should be equipped with facilities to prevent liquid from spreading. Measures to prevent water immersion should be taken in the warehouse of goods that will burn and explode when wet.
1) Class A and B production sites should not be set up underground or semi-underground.
2) Class A and B warehouses should not be set up underground or semi-underground.
The intrinsically safe system is a circuit system that achieves electrical explosion-proof by limiting electrical energy, and does not restrict the use of places (where the ia level is applicable to dangerous places in Zone 0, Zone I, and Zone II) and explosive The type of gas mixture (limited to include all flammable gases); with a high degree of safety, maintainability and economy. A schematic diagram of an intrinsically safe system.
Calculation formula of pressure relief area:
A=10CV2/3
A--pressure relief area (㎡);
V--the volume of the workshop (m³);
C - pressure relief ratio
1) Length-to-diameter ratio: the ratio of the product of the longest dimension in the geometric dimensions of the building and its cross-sectional perimeter to 4.0 times the cross-sectional area of the building.
2) When the aspect ratio of the factory building is greater than 3, the building should be divided into multiple calculation sections with an aspect ratio not greater than 3, and the common section in each calculation section shall not be used as a pressure relief area.
ATEX: EN IEC 60079-0-2018; EN 60079-7-2015; EN 60079-18-2015; EN 60079-31-2014;
ATEX :