Marine explosion proof flood light: the fundamental technical analysis of ship safety lighting and application practice

First, the Marine explosion proof flood lights why is the core demand for ship lighting

As a high-risk confined space, ships are exposed to humidity, salt spray, oil and flammable gases for a long time.

According to statistics, 25% of annual ship accidents caused by electrical equipment around the world are directly related to the lighting system.

Marine explosion proof flood light are approved to be just required equipment for ship lighting with the following characteristics:

Intrinsic explosion-proof design: Adopting double protection of explosion-proof shell [Ex d] and safety-increasing circuit [Ex e], effectively isolating the internal electric spark and external flammable environment.

Extreme environmental adaptability: IP66/IP68 protection level can withstand the impact of waves and salt spray corrosion, -40 ℃ to 55 ℃ wide temperature range designed to cover the polar to equatorial routes.

Long-lasting stabilized light source: LED chip luminous efficacy of 140lm/W or more, life expectancy of more than 50,000 hours, reducing the need for frequent maintenance.

Second. Marine explosion proof flood light core technology analysis

2.1 Explosion-proof and protection technology

Explosion-proof structure: aluminum alloy die-casting shell with tempered glass lampshade, approved Ex d IIC T6 explosion-proof certification, suitable for IIA, IIB, IIC gas environment.

Sealing design: Silicone sealing ring and 304 stainless steel fasteners ensure IP66/IP68 protection against seawater infiltration and salt spray erosion.

Heat dissipation solution: Independent light source and power supply chambers are designed with finned heat dissipation structure to control the junction temperature below 85℃.

2.2 Optical and Energy Efficiency Improvement

Intelligent light distribution system: 120° wide-angle floodlight and 60° spotlight modes are available to meet the differentiated needs of deck operation and cabin lighting.

Emergency Function Integration: Built-in super capacitor or lithium battery, it can continue to illuminate for 180 minutes after power failure, which meets the requirements of SOLAS convention.

Voltage compatibility: 85-295V wide voltage input, adapt to the fluctuation of the ship’s power grid.

Third. Marine explosion proof flood lights typical application scenarios

3.1 Deck and cargo hold lighting

Deck area: 100W-300W high power models supply 25lux uniform illumination, with the help of boom or wall mounting, covering an area of 200 square meters.

Cargo hold explosion-proof lighting: asymmetric light distribution design to eliminate the shadow blindness caused by the stacking of goods, explosion-proof level to meet the Ex tD A21 guidelines.

3.2 Cabin and pump room

High-temperature environment adaptation: temperature-resistant 80 ℃ lamp body materials and constant-current drive power supply to ensure stable operation in the cabin.

Anti-vibration design: spring damping bracket and anti-loosening bolts to cope with continuous vibration of ship’s engine.

3.3 Oil and chemical tankers

Anti-corrosion treatment: WF2 anti-corrosion grade shell can resist oil, acid and alkali liquid erosion.

Gas monitoring linkage: optional combustible gas sensor, automatically cut off the power supply and start the alarm when the concentration exceeds the standard.

Fourth. Marine explosion proof flood lights selection and installation guidelines

4.1 Selection of basic parameters

Indicator	Recommended standard	Function description
Explosion-proof grade	Ex d IIC T6/Ex tD A21	Adaptation to different hazardous area classification
Protection class	IP66/IP68	Resistant to seawater and dust ingress.
Light source	CREE/OSRAM LED chips	ensure high luminous efficacy and long life.
Emergency duration	≥90 minutes	Meets the requirements of maritime safety regulations.

4.2 Installation specification

Hazardous area: According to IEC 60092-502 guidelines, 1 zone should use Ex d certified lamps, 2 zone can choose Ex nR type.

Cable laying: Adopt explosion-proof armored cable [G3/4 interface] with diameter Φ12-14.5mm.

Angle Adjustment: The lamp body holds the horizontal 350°, pitch 45° rotation, accurate coverage of the intended area.

Fifth. Industry momentum and technological innovation

5.1 Intelligent upgrade

Internet of Things integration: Approve 4G/WiFi module to implement remote brightness adjustment and troubleshooting, reduce inspection costs.

Energy consumption improvement: microwave sensor technology can automatically reduce power in unoccupied areas, with an energy saving rate of 30%.

5.2 New Energy Integration

Wind and light complementary system: integrated solar panels Marine explosion proof flood lights, off-grid power supply in sunny areas.

Hydrogen fuel cell backup: the pilot project adopts hydrogen emergency power supply, with range extended to 72 hours.

Sixth, the choice of quality suppliers 5 assessment dimensions

1. Complete certification: must have ATEX, IECEx, CCS classification society certification.

2. Engineering cases: Priority is given to suppliers who have served COSCO Shipping, Maersk and other head shipbuilding enterprises. 3.

3. Customization ability: support non-standard voltage [such as 24VDC] and special size customization.

4. Warranty system: 5 years long warranty, covering light source and driver module.

5. localized service: set up spare parts warehouse in the primary port, 48 hours emergency response.

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