Explosion-Proof LED linear light – 50W to 200W, 160lm/W Ultra-High Efficacy for Chemical Plants, Refineries & Gas Stations

2026 Ultimate SEO Guide, Specifications, Safety Standards, Industrial Applications & Cost-Benefit Analysis

Word Count: 6,800+ | Format: SEO-Optimized, Clear Headings, Data Tables, Keyword-Dense | Content: Industry-Unversal, Brand-Neutral, Compliance-Focused | Use Case: Blogs, Industry Directories, Hazardous Location Engineering Pages

Table of Contents

1. Executive Summary: Explosion-Proof LED Linear Light – 50W to 200W, 160lm/W Ultra-High Efficacy for Hazardous Locations

2. 2026 High-Intent SEO Keyword Library for 50W–200W 160lm/W Explosion-Proof LED Linear Lights

3. Professional Industry Definition & Core Working Principles of Explosion-Proof LED Linear Lighting

4. 2026 Universal Standard Specification Tables: 50W–200W 160lm/W Explosion-Proof LED Linear Light

5. Explosion-Proof LED Linear vs Traditional Explosion-Proof Lighting: Full Performance & TCO Comparison

6. Core Advantages of 50W–200W 160lm/W Ultra-High Efficacy Explosion-Proof LED Linear Lights

7. Industrial-Grade Explosion-Proof Design & IP66 Sealed Protection Technology

8. Ultra-High Efficacy (160lm/W) LED light Source Technology for Hazardous Environments

9. Full Hazardous Location Applications & Professional Selection Guide (Chemical Plants, Refineries, Gas Stations)

10. Global Explosion-Proof Safety Certifications & 2026 Compliance Standards (ATEX, IECEx, UL844, Ex Ratings)

11. Standard Installation Methods & Hazardous Area Deployment Best Practices

12. Advanced Thermal Management for 24/7 Operation in High-Temp Chemical & Refinery Environments

13. Lumen Maintenance, Lifespan Metrics & Long-Term Performance Data

14. Routine Maintenance Protocols & Common Fault Troubleshooting for Explosion-Proof LED Linear Lights

15. 2026 Market Trends & Future Outlook for Explosion-Proof LED Linear Lighting in Oil, Gas & Chemical Industries

16. SEO-Focused FAQs for 50W–200W 160lm/W Explosion-Proof LED Linear Lights

1. Executive Summary: Explosion-Proof LED Linear Light – 50W to 200W, 160lm/W Ultra-High Efficacy for Hazardous Locations

2. 2026 High-Intent SEO Keyword Library for 50W–200W 160lm/W Explosion-Proof LED Linear Lights

2.1 Core Primary High-Volume Keywords

• Explosion-Proof LED Linear Light – 50W to 200W, 160lm/W Ultra-High Efficacy

• 50W–200W 160lm/W Explosion-Proof LED Linear Light for Chemical Plants

• IP66 Ultra-High Efficacy Explosion-Proof Linear LED for Refineries

• 160lm/W High-Efficiency Explosion-Proof LED Linear Hazardous Location Light

• ATEX/IECEx Certified 50W–200W LED Explosion-Proof Linear Industrial Lighting

• Oil and Gas Explosion-Proof LED Linear Light 160lm/W

• Ex d IIC T6 Rated 50W–200W LED Explosion-Proof Linear Canopy Light

2.2 High-Conversion Long-Tail Keywords

• 50W–200W 160lm/W IP66 explosion-proof LED linear light for chemical plant production lines

• Low surface temperature T6 explosion-proof LED linear light for refinery solvent vapor areas

• Maintenance-free 50W–200W LED explosion-proof linear light for hazardous Zone 2 chemical facilities

• Energy-efficient explosion-proof LED linear replacement for 150W fluorescent in gas station canopies

• Corrosion-resistant IP66 160lm/W LED explosion-proof linear light for offshore oil platforms

• 50W–200W explosion-proof LED linear light with instant-on for refinery Emergency Lighting

• Dustproof waterproof explosion-proof LED linear light for chemical plant wastewater zones

2.3 Scenario-Based Target Keywords

• Chemical plant production line explosion-proof LED linear lighting 50W–200W

• Oil refinery pipe rack explosion-proof LED linear light fixtures

• Gas station canopy linear Explosion-proof LED lighting 160lm/W

• Petrochemical tank farm explosion-proof LED linear illumination 50W–200W

• Zone 1 hazardous area 50W–200W LED explosion-proof linear light

• Zone 22 combustible dust explosion-proof LED linear light for chemical processing

• Refinery loading dock linear explosion-proof LED illumination

2.4 Performance & Safety-Focused Keywords

• 160lm/W ultra-high efficacy explosion-proof LED linear light industrial

• Long lifespan 50W–200W explosion-proof LED linear fixture

• T6 low-temperature explosion-proof LED linear light ignition safe

• IP66 dust-tight watertight explosion-proof LED linear light

• Ex d IIC T6 explosion-proof rating LED linear light

• Mercury-free explosion-proof LED linear light environmentally safe

• Vibration-resistant explosion-proof LED linear light for industrial machinery zones

2.5 Technical & Compliance SEO Keywords

• 2026 explosion-proof LED linear light standard specifications 50W–200W

• ATEX IECEx UL844 compliance for hazardous location linear LED lights

• 160lm/W ultra-high efficacy LED technology in explosion-proof linear lighting

• Thermal management for 50W–200W explosion-proof LED linear lights

• Lumen maintenance data for industrial explosion-proof LED linear fixtures

• Hazardous area installation guide for IP66 explosion-proof LED linear lights

• Explosion-proof LED linear light maintenance for chemical plants

3. Professional Industry Definition & Core Working Principles of Explosion-Proof LED Linear Lighting

3.1 Professional Industry Definition

• 50W–200W adjustable power: Scalable linear illumination for small to large hazardous areas

• 160lm/W ultra-high luminous efficacy: Industry-leading for explosion-proof linear LED fixtures (30% higher than standard industrial LEDs)

• IP66 protection rating: Dust-tight (6) and protected against powerful water jets (6)—critical for wet, dusty, corrosive chemical/refinery/gas environments

• Industrial LED chips: Premium, low-decay, high-CRI (Ra≥85) light source with 50,000+ hour lifespan

• Explosion-proof linear enclosure: Thick die-cast aluminum/GRP housing with sealed joints and flame paths to contain internal ignition sources

• T6 temperature rating: Maximum surface temperature ≤85°C—below the auto-ignition temperature of most industrial flammable gases/vapors

• Linear form factor: 2ft/4ft/5ft lengths for seamless linear illumination of production lines, pipe racks, and canopies

3.2 Core Technical Working Principles

3.2.1 160lm/W Ultra-High Efficacy LED Chip Electro-Optical Conversion System

• 160lm/W efficacy: 50W = 8,000lm; 100W = 16,000lm; 200W = 32,000lm (2.5x higher than 150W fluorescent explosion-proof linear lights)

• Low thermal resistance packaging: Minimizes heat generation (critical for T6 rating)

• ≤2% annual light decay: Maintains 90% lumen output after 50,000 hours (5+ years of 24/7 use)

• Ra≥85 color rendering: Accurate color visibility for chemical plant QC, refinery inspections, and gas station safety checks

• Instant-on (0.1s): No warm-up delay—critical for emergency linear lighting in hazardous zones

3.2.2 Ex d Flameproof Explosion Containment Technology

• Thick die-cast aluminum/GRP housing: High mechanical strength to withstand internal explosion pressure (≥12 bar)

• Precision-machined flame paths: Narrow gaps between housing halves cool escaping hot gases below ignition temperature before they reach the external hazardous atmosphere

• Fully sealed construction: Eliminates entry of flammable gases/vapors into the electrical cavity

• ATEX/IECEx/UL844 certified: Third-party tested to meet global explosion safety standards

3.2.3 IP66 Multi-Layer Sealed Protection System

• Dust-tight (IP6X): Prevents industrial dust, chemical powder, and sand from entering—critical for chemical processing zones and refinery pipe racks

• Protected against powerful water jets (IPX6): Withstands high-pressure washing (common in gas station canopy cleaning, chemical equipment rinsing, and refinery maintenance)

• Nitrile rubber gaskets: Resists chemical corrosion (solvents, oils, ammonia) and aging

• Stainless steel fasteners: Prevents rust and corrosion in humid, chemical-laden air

3.2.4 Industrial Isolated Constant-Current Drive with Surge Protection

• Isolated constant-current design: Stable current output to LED chips—prevents overheating and flickering

• PF≥0.98, THD≤3%: High power efficiency, minimal reactive power loss (critical for 24/7 operation)

• 10kV surge protection: Withstands lightning and industrial voltage spikes (common in remote gas stations and refineries)

• Wide voltage input (100–277V AC): Adapts to global industrial power grids

• Class II double insulation: No exposed live parts—reduces spark risk

• -40°C to +65°C operating range: Stable in extreme chemical plant/refinery/gas station temperatures

3.2.5 Industrial Passive Thermal Management for T6 Compliance

• Extruded aluminum heat sink: Integrated into the explosion-proof linear housing—maximizes heat dissipation area

• Horizontal fin design: Optimizes natural convection (hot air rises, cool air flows in) for linear form factor

• Thermal interface material (TIM): High-conductivity paste between chips and heat sink—minimizes thermal resistance

• No internal fans: Eliminates moving parts (failure risk) and air leaks (gas entry risk)

4. 2026 Universal Standard Specification Tables: 50W–200W 160lm/W Explosion-Proof LED Linear Light

4.1 Core Optical & Electrical Performance Table

4.2 Explosion Safety & Compliance Rating Table

4.3 Mechanical & Environmental Adaptability Table

5. Explosion-Proof LED Linear vs Traditional Explosion-Proof Lighting (Fluorescent, HID): Full Performance & TCO Comparison

5.1 Full Performance Comparison Table

5.2 Long-Term TCO Comprehensive Cost Benefit Analysis

Key Assumptions:

• Operation: 24/7 (8,760 hours/year)

• Electricity cost: $0.12/kWh

• Maintenance cost: $40 per bulb/ballast replacement (including hazardous area labor/shutdown costs)

• Lifespan: LED = 50,000 hours; Fluorescent = 10,000 hours; Metal Halide = 12,000 hours

5-Year TCO Comparison (30 Lights – Gas Station Canopy):

• The 100W 160lm/W LED linear saves 33% on electricity vs 150W fluorescent, 60% vs 250W metal halide

• Zero maintenance/replacement costs for 5+ years (no hazardous area shutdowns)

• 5-year ROI<10 monthsfor chemical plants/refineries/gas stations

• Eliminates mercury disposal costs (hazardous waste fees for fluorescent/metal halide)

6. Core Advantages of 50W–200W 160lm/W Ultra-High Efficacy Explosion-Proof LED Linear Lights

6.1 Unmatched Explosion Safety (T6 Rating + Ex d Enclosure)

• T6 ≤85°C surface temp: Safest rating for flammable gas/vapor environments (gasoline vapor auto-ignition = ~280°C; most solvents = ~200°C)

• Ex d flameproof linear enclosure: Contains internal sparks/explosions—no external ignition risk

• ATEX/IECEx/UL844 certified: Third-party tested for global hazardous location compliance

• Zero exposed live parts: Class II double insulation eliminates spark sources

6.2 75%–85% Energy Savings vs Traditional Explosion-Proof Linear Lights

• 160lm/W ultra-high efficacy: 50W replaces 150W fluorescent; 100W replaces 250W metal halide

• 24/7 operation optimized: PF≥0.98, THD≤3% minimizes wasted power

• Reduced carbon footprint: Aligns with industrial ESG goals for chemical/refinery/gas companies

6.3 50,000+ Hour Lifespan & Near-Zero Maintenance

• Ultra-high efficacy LED chips: ≤2% annual light decay—no lumen drop for 5+ years

• No consumable parts: No bulbs, ballasts, or fans to replace

• Eliminates hazardous area shutdowns: No need for monthly/quarterly maintenance

• 5+ year warranty: Standard for industrial LED explosion-proof linear fixtures

6.4 IP66 Dust-Tight & Watertight for Harsh Chemical/Refinery/Gas Environments

• Dust-tight: Blocks industrial dust, chemical powder, and sand (critical for chemical processing zones)

• Water jet resistant: Withstands high-pressure washing (gas station canopy cleaning, chemical equipment rinsing)

• Corrosion-resistant housing: Die-cast aluminum/GRP + nitrile gaskets resist solvents, oils, ammonia, and salt spray

6.5 High CRI (≥85) for Safety & Precision

• Accurate color rendering: Critical for chemical plant quality control (identifying color-coded chemicals, detecting leaks)

• Refinery safety: Clear visibility for pipe inspections, valve checks, and emergency exits

• Gas station safety: Clear visibility for fueling operations and equipment inspections

• Flicker-free: Eliminates eye fatigue for 24/7 workers

6.6 Instant-On & Emergency Lighting Ready

• 0.1s warm-up: No delay for power outages or emergency situations

• Compatible with backup generators: Critical for chemical/refinery safety protocols

• No restrike delay: Can be turned on/off repeatedly (fluorescent/HID requires minutes to restrike)

6.7 Vibration & Impact Resistant (IK08/IK09)

• Reinforced linear housing: Withstands vibration from chemical plant machinery, refinery pumps, and gas station equipment

• IK08/IK09 impact rating: Resists accidental collisions with equipment or vehicles

6.8 Linear Form Factor for Seamless Long-Span Illumination

• 2ft/4ft/5ft lengths: Perfect for production lines, pipe racks, canopies, and loading docks

• Uniform linear light distribution: Eliminates dark gaps between fixtures in long hazardous zones

7. Industrial-Grade Explosion-Proof Design & IP66 Sealed Protection Technology

7.1 Ex d Flameproof Linear Enclosure Construction

• Housing material: High-grade die-cast aluminum alloy (ADC12) or GRP (glass-reinforced polyester) with 3–5mm wall thickness—withstands internal explosion pressure (≥12 bar)

• Flame path design: Precision-machined 0.15–0.2mm gaps between housing halves—cools escaping hot gases below 85°C before they exit

• Sealing: Nitrile rubber gaskets (3mm thickness) between all joints—prevents gas/vapor entry

• Fasteners: Stainless steel (316L) bolts—rust/corrosion resistant, no loosening from vibration

7.2 IP66 Multi-Layer Sealed System

1. Lens seal: Tempered glass/UV-PC lens bonded to housing with UV-cured silicone—dust/water tight

2. Housing joint seal: Nitrile rubber gasket between upper/lower housing—resists chemical corrosion

3. Cable entry seal: IP66-rated cable gland with rubber insert—seals power cable entry points

7.3 T6 Low-Temperature Thermal Design

• Integrated heat sink: Extruded aluminum fins (10mm height) on housing exterior—maximizes convection area

• Thermal interface: High-conductivity TIM (thermal paste) between LED chips and aluminum substrate

• Passive cooling only: No fans (eliminates failure risk and air leaks)

• Fin orientation: Horizontal fins optimize natural convection for linear form factor

8. Ultra-High Efficacy (160lm/W) LED Light Source Technology for Hazardous Zones

8.1 Ultra-High Efficacy LED Chip Core Advantages

• 160lm/W efficacy: Industry-leading for explosion-proof linear applications

• Low thermal resistance: 2.5°C/W—minimizes heat generation (critical for T6 rating)

• Ultra-low decay: ≤2% annual light decay—maintains 90% lumen output after 50,000 hours

• High CRI (Ra≥85): Accurate color rendering for safety and precision

• Wide temperature tolerance: -40°C to +65°C—stable in extreme industrial environments

• Vibration resistance: Tested to 10g vibration—withstands chemical plant/refinery machinery vibration

8.2 Why 160lm/W for Hazardous Locations?

• Explosion safety: Low heat output directly enables T6 rating—critical for flammable gas/vapor zones

• Long-term reliability: Low decay eliminates lumen drop—no need for frequent replacements in hard-to-access hazardous areas

• Energy efficiency: 160lm/W cuts power use by 50% vs 70lm/W fluorescent—massive cost savings for 24/7 operation

• Consistent quality: Rigorous factory testing—no batch-to-batch variation (critical for industrial safety compliance)

9. Full Hazardous Location Applications & Professional Selection Guide (Chemical Plants, Refineries, Gas Stations)

9.1 Chemical Plant Applications (Zone 1/2, Zone 21/22)

• Reaction zones (Zone 1): 100W–150W LED linear (T6, Ex d IIC T6) – low heat for solvent vapor safety, 4ft length for production lines

• Raw material storage (Zone 2): 50W–100W LED linear (IP66, corrosion-resistant) – 2ft/4ft lengths for chemical drum storage racks

• Packaging lines (Zone 22): 50W–100W LED linear (dustproof, IK08) – 4ft length for combustible powder handling lines

• Wastewater treatment (Zone 2): 50W LED linear (IP66, moisture-resistant) – 2ft length for humid, corrosive environments

• Laboratory areas (Zone 2): 50W LED linear (high CRI≥85) – 4ft length for precise chemical analysis

9.2 Oil Refinery Applications (Zone 1/2, Zone 21/22)

• Process units (Zone 1): 150W–200W LED linear (T6, Ex d IIC T6) – 4ft/5ft lengths for high-temperature pipe racks

• Pipe racks (Zone 2): 100W–150W LED linear (vibration-resistant) – 5ft length for long-span pipe systems

• Oil storage tank farms (Zone 2): 100W LED linear (pendant mount) – 4ft length for tank perimeter linear illumination

• Loading docks (Zone 2): 150W LED linear (120° beam angle) – 5ft length for wide truck loading areas

• Control rooms (Zone 2): 50W LED linear (flicker-free) – 4ft length for 24/7 operator workstations

9.3 Gas Station Applications (Zone 2 – Intermittent Gas Hazard)

• Canopy lighting: 100W LED linear (90°–120° beam angle) – 4ft length, 1 light per 4–6m span

• Service bay lighting: 50W–100W LED linear (vibration-resistant) – 4ft length for vehicle maintenance bays

• Dispenser area lighting: 50W LED linear (narrower beam) – 2ft length for focused illumination above fuel pumps

• Underground storage tank lighting: 50W LED linear (IP66, dust/water resistant) – 2ft length for humid vaults

9.4 Professional Selection Criteria

1. Hazardous zone rating: Match Ex d IIC T6 for Zone 1/2 gas; Ex tb IIIC T80°C Db for Zone 21/22 dust

2. Surface temperature: Always T6 (≤85°C) for flammable gas/vapor environments

3. IP rating: Minimum IP66 for chemical/refinery/gas environments

4. Length: 2ft (600mm) for small areas; 4ft (1200mm) for standard lines; 5ft (1500mm) for long spans

5. Mounting: Ceiling/pendant for high ceilings; wall/trunnion for equipment areas

10. Global Explosion-Proof Safety Certifications & 2026 Compliance Standards (ATEX, IECEx, UL844, Ex Ratings)

10.1 ATEX Directive (European Union)

• ATEX 2014/34/EU: Governs explosive atmosphere equipment

• Rating: II 2G Ex d IIC T6 Gb / II 2D Ex tb IIIC T80°C Db

• Coverage: Zone 1/2 (gas), Zone 21/22 (dust)

• Marking: Must display Ex rating, T-code, and zone classification

10.2 IECEx (International Electrotechnical Commission)

• Global standard: Adopted by 80+ countries (Asia, Middle East, Africa, Australia)

• Rating: Same as ATEX – Ex d IIC T6, Ex tb IIIC T80°C Db

• Equivalence: IECEx = ATEX for international projects

10.3 UL844 (North America – NEC/CSA)

• Standard: UL844 – Luminaires for Hazardous Locations

• Rating: Class I Div 1/2, Class II Div 1/2

• Class I: Gas/vapor; Class II: Combustible dust

• Division 1: Continuous hazard; Division 2: Intermittent hazard

10.4 Critical Compliance Requirements (2026 Updates)

• T6 temperature mandate: All new hazardous location lights must be T6 (≤85°C) for gas zones

• IP66 minimum: No IP65 allowed for chemical/refinery/gas environments

• RoHS compliance: Zero lead, mercury, cadmium – global environmental mandate

• CE marking: Required for EU/EEA markets

11. Standard Installation Methods & Hazardous Area Deployment Best Practices

11.1 Mounting Options

• Pendant mount: Ideal for gas station canopies/refinery pipe racks (4–8m height)

• Ceiling mount: Flush installation for low ceilings (3–4m) in chemical plant workshops

• Wall mount: Adjustable bracket for chemical plant equipment areas/refinery valve stations

• Trunnion mount: Swivel bracket for refinery loading docks/gas station service bays

11.2 Hazardous Area Installation Best Practices

1. Certified electricians only: Must have hazardous location wiring certification

2. Seal cable entries: Use IP66 cable glands with sealing compound to prevent gas/vapor entry

3. Grounding: Proper earth grounding (≤4Ω) to avoid static electricity buildup

4. Spacing: Maintain 30cm clearance from flammable materials/pipes

5. No modification: Never drill or modify the explosion-proof housing (voids certification)

6. Labeling: Clearly mark fixture with Ex rating, T-code, and zone classification

12. Advanced Thermal Management for 24/7 Operation in High-Temp Chemical & Refinery Environments

12.1 Passive Cooling System Details

• Extruded aluminum heat sink: 12–15 horizontal fins, 10mm height – maximizes convection for linear form factor

• Thermal resistance: Total system thermal resistance ≤3.5°C/W – keeps chip temp ≤60°C

• Convection efficiency: Natural air flow through fins – no fans, no moving parts

• Ambient temp tolerance: Maintains T6 rating even at +65°C ambient (refinery summer heat)

12.2 Thermal Isolation Design

• Driver cavity separation: Driver isolated from LED cavity with thermal barrier – prevents driver heat from raising chip temp

• Epoxy potting: Driver potted in thermal epoxy – improves heat dissipation and prevents condensation

13. Lumen Maintenance, Lifespan Metrics & Long-Term Performance Data

13.1 L70/L80 Lifespan Definitions

• L70: Time to reach 70% of initial lumen output – 50,000+ hours

• L80: Time to reach 80% of initial lumen output – 40,000+ hours

13.2 Long-Term Lumen Retention Data

• 10,000 hours: 98% lumen retention

• 30,000 hours: 95% lumen retention

• 50,000 hours: 90% lumen retention

• Annual decay: ≤2% – Ultra-high efficacy chip + optimized thermal management

13.3 Failure Rate Data

• Annual failure rate: ≤0.1% – near-zero maintenance for 5+ years

• MTBF: ≥100,000 hours – industrial-grade reliability

14. Routine Maintenance Protocols & Common Fault Troubleshooting for Explosion-Proof LED Linear Lights

14.1 Routine Maintenance (Every 6–12 Months)

1. Visual inspection: Check housing for cracks, corrosion, or damaged gaskets

2. Lens cleaning: Wipe tempered glass/UV-PC lens with non-abrasive cloth (remove dust/oil)

3. Mounting check: Verify brackets/fasteners are tight (vibration loosening)

4. Cable gland inspection: Ensure seals are intact (no gas/vapor entry)

5. No internal access: Never open the explosion-proof housing (voids certification)

14.2 Common Faults & Troubleshooting

1. Flickering light: Loose wiring or unstable voltage – check cable connections, install voltage stabilizer

2. Dim output: Dust on lens or heat sink – clean lens/fins; check for thermal overload

3. No power: Tripped circuit breaker or faulty driver – reset breaker, inspect driver (certified electrician only)

4. Corrosion on housing: Harsh chemical exposure – clean housing, apply anti-corrosion coating

15. 2026 Market Trends & Future Outlook for Explosion-Proof LED Linear Lighting in Oil, Gas & Chemical Industries

15.1 Key 2026 Trends

• T6 standardization: 100% of new hazardous location lights will be T6 (≤85°C)

• IP66 mandate: IP65 phased out for chemical/refinery/gas environments

• 160lm/W+ efficacy: Next-gen chips pushing efficacy to 180lm/W by 2027

• Smart integration: IoT-enabled explosion-proof LEDs with remote monitoring (energy use, temp, faults)

• Emergency backup: 3-hour battery backup standard for safety-critical areas

15.2 Future Outlook

• Efficiency gains: 180–200lm/W by 2028 (next-gen industrial LED chips)

• Lower costs: 30% price reduction by 2027 (mass production)

• Longer lifespan: 75,000+ hours L70 by 2029

• Wider adoption: 90% of traditional fluorescent/HID explosion-proof linear lights replaced by LED by 2030

16. SEO-Focused FAQs for 50W–200W 160lm/W Explosion-Proof LED Linear Lights

Q1: Why is T6 rating critical for chemical plant and gas station lighting?

Q2: How much energy can I save by replacing 150W fluorescent explosion-proof linear lights with 100W 160lm/W LED linear lights?

Q3: Are 160lm/W explosion-proof LED linear lights suitable for corrosive chemical plant environments?

Q4: What’s the difference between Ex d and Ex e explosion protection for linear lights?

Q5: How long do 160lm/W explosion-proof LED linear lights last in 24/7 operation?