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Lux level Standards in Industry
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Lux level Standards in Industry

Lux level Standards in Industry are recommendations from IS for sufficient light at workplace to maintain wellbeing, safety of workers and productive work environment.

Considering increasing industrial activities in India, where many people have to work with attention to details throughout day and night. With all different visual task’s conditions, lighting should be suitable for adequate visibility in any industrial processes.

Physical hazards can be prevented if sufficient lighting is available in workplace area. Lighting condition not only contributes to the safety but also make workplace more comforting and productive.

Unit of illumination

The standard unit to measure the intensity level of light is known as LUX. It is also called as Illuminance or illumination.

Lux level standards in industry - Perfect Pollucon Services

Quantity of Illumination in industry

Ideally a lighting system should be designed in such way that it provides uniform distribution of light over entire workplace.

And adequacy of lighting is necessary to avoid occupational eye-strain and accidents due to poor lighting. Adequate lighting also creates aggregable illuminous work environment.

Read more about Effect of Poor lighting at workplace

Depending on the type of activity demand of degree of illumination differs. For e.g.

  • If you are reading, drawing then it is better to maintain LUX levels around 200
  • To maintain standard LUX level for office, where people work on computers, laptops it is better to increase illumination to 400-500 LUX
  • In Shops, showrooms lex levels should be maintained at 500 LUX
  • At Workshops lux level should be maintained at 600-700 LUX
  • And for critical works like operation theatre in hospitals it is required to maintain LUX levels at 1000

Quality of Illumination in industry

Here Quality of illumination industry is referring to distribution of brightness in workplace area. It expects uniform brightness throughout the industrial area. Reduction in glares play major role in maintaining quality of illumination. Reflected glares can be minimized of eliminated using light source of low luminance or increasing the angle from line of vision. There should not be any harsh shadows in industry.

Placement of light source - Lux level standards in industry - Perfect Pollucon Services

Illumination Standards as per Factory Act, 1948 (Section 17 – Lighting)

As per factory act, 1948 section 17 there are few rules and regulations to be followed by all industries in India. Few important points from factory act for lighting are mentioned below:

  • All part of the factory where employees are working or passing should have sufficient lighting either by natural or artificial source
  • In every factory all glazed windows and skylights used for the lighting of the workroom shall be kept clean on both the sides and so far as agreement with the requirements of any rules made under sub-section (3) of section 13 will allow, free from obstruction.
  • In all factories, there should not be any glares from directly any light source or indirectly polished surface
  • In all factories, there should not be any shadows which limits the visibility of the employees which can cause accidents or eye strain
  • The State Government may prescribe standards of adequate and appropriate illumination for factories or for any class or account of workshops or for any industrial process.

LUX Level in Industry as per Indian Standard (IS 6665)

Keeping this in mind Indian Burau of Indian Standards had come up with standards to be followed for Industrial lighting in IS:3646 (I – 1966), IS:3646 (II – 1966), IS:3646 (III – 1968).

They have updated those Illumination lux level standards for different industries in 1972 as IS:6665. Please find below recommended Illumination lux level standards for industrial buildings and processes.

Workplace LUX Level Standards in Industry

Read more about Illumination Survey or Lighting assessment

Lux Level standards for General factory areas:

Average Illumination LUX Level StandardsLimiting Glare Index
Canteens150–
Cloakrooms100–
Entrances, corridors, stairs100–

Lux Level standards for Factory outdoor Areas

Average Illumination LUX Level StandardsLimiting Glare Index
Stockyards, main entrances,
exit roads, car parking, internal factory roads
20–

Aircraft factory

Average Illumination LUX Level StandardsLimiting Glare Index
Stock parts production45025
Drilling, riveting, screw fastening, wing sections, welding, assembly, sub-assembly, inspection area30025
Maintenance and repair (hangers)30025

Illumination levels at Assembly shops

Average Illumination LUX Level StandardsLimiting Glare Index
Rough work like frame assembly.15028
Medium work like machine parts, engine assembly, vehicle body assembly.30025
Fine work like radio and telephone assembly.70022
Very fine work like assembly of very small instruments1500*19

Boiler houses

Average Illumination LUX Level StandardsLimiting Glare Index
Coal and Ash handling100–
Boiler front and operating areas100–
Others area20 to 25–
Catwalks20–
Platforms50–

Boot and Shoes Manufacturing factories

Average Illumination LUX Level StandardsLimiting Glare Index
Sorting and grading1000*19
Clicking and closing, preparatory operations70022
Bottom stock preparation, lasting and bottoming70022
Cutting table and presses, stitching100022
Shoe rooms70022

Brewers and Distillers

Average Illumination LUX Level StandardsLimiting Glare Index
General working areas15025
Brewhouse, bottling and canning plants20025
Bottle inspectionSpecial lighting–

Canning and preserving Factories

Average Illumination LUX Level StandardsLimiting Glare Index
Inspection of beans, rice, barley, etc45022
Preparation: Kettle areas, mechanical cleaning, dicing, trimming30025
Canned and bottled goods: Retorts20025
High speed labelling lines30025
Can inspection450–

Lux Level standards for Carpet Factory

Average Illumination LUX Level StandardsLimiting Glare Index
Winding, beaming20025
Designing, jacquard card cutting, setting pattern,
tufting, topping, cutting, hemming, fringing
45022
Weaving, mending, inspection45022

Lux Level standards for Chemical manufacturing Factories:

Average Illumination LUX Level StandardsLimiting Glare Index
Hand furnaces, boiling tanks, stationery driers, stationery or gravity crystallizers, mechanical driers, evaporators, filtration plants, mechanical crystallizing bleaching, extractors, percolators, nitrators, electrolytic cells15028
Controls, gauged, values; etc100–

Lux level Standards in Industry : Clothing Manufacturing Factories

Average Illumination LUX Level StandardsLimiting Glare Index
Cutting, sewing300-70022-20
Inspection450-10019
Hand Tailoring450-150019

Lux Level standards for Electricity Generating Station

Average Illumination LUX Level StandardsLimiting Glare Index
Turbine halls20025
Auxiliary equipment; battery rooms, blowers,
auxiliary generators, switchgear and transformer
chambers
100–
Boiler houses (including operating floors) platforms,
coal conveyors, pulverisers, feeders, precipitators,
soot and slag blowers
70-100–
Boiler house and turbine house100–
Basements70–
Conveyor houses, conveyor genets, junction
towers
70-100–
Control rooms200-30019
Nuclear reactors and steam raising plants150-20025

Electricity Generating Stations: Outdoor Locations

Average Illumination LUX Level StandardsLimiting Glare Index
Coal unloading areas20–
Coal storage areas20–
Conveyors50–
Fuel oil delivery headers50–
Oil storage tanks50–
Catwalks50–
Platforms, boiler and turbine decks50–
Transformers and outdoor switchgear100–

Lux level Standards in Industry: Engineering

Average LUX LevelLimiting Glare Index
Hand100019
Machine––

Foam Building

Average Illumination LUX Level StandardsLimiting Glare Index
Boiler houses50–
Milk room15025
Washing and sterilizing rooms15025
Stables50–
Milking parlours15025

Flour Mills

Average Illumination LUX Level StandardsLimiting Glare Index
Roller, purifier, silks and packing floors15025
Wetting tables30025

Lux Level standards for Foundries

Average Illumination LUX Level StandardsLimiting Glare Index
Charging floors; tumbling cleaning, pouring, shaking
out, rough molding and rough core making
15028
Fine moulding and core making, inspection30025

Lux Level standards for Garages

Average Illumination LUX Level StandardsLimiting Glare Index
Parking areas (interior)7028
Washing and polishing, greasing, general servicing,
pits
15028
Repairs30025

Gas Work

Average Illumination LUX Level StandardsLimiting Glare Index
Retort houses, oil gas plants, Water gas plants, coke handling plant30 to 5028
Governor, meter, booster10025

Open type plants

Average Illumination LUX Level StandardsLimiting Glare Index
Catwalks20–
Platforms50–
Gauge and Tool Rooms70019

Glass Works and Processes

Average Illumination LUX Level StandardsLimiting Glare Index
Furnace rooms, bending, annealing10028
Mixing rooms, forming (blowing, drawing, pressing,
rolling)
15028
Cutting to size, grinding, polishing, toughening20025
Finishing (bevelling, decorating, etching, silvering)30022
Brilliant cutting70019
Inspection (General and fine)200 and 70019

Inspection shops (Engineering)

Average Illumination LUX Level StandardsLimiting Glare Index
Rough work, for example, counting, rough15028
Medium work, for example, ‘Go’ and ‘No-go’
gauges, sub-assemble
30025
Fine work, for example, radio and telecommunication equipment, calibrated scales, precision mechanisms, instruments70022
Very fine work, for example, gauging and inspection-
of small intricate parts
150019
Minute work, for example, very small instruments300010

Lux Level standards for Iron and steelworks

Average Illumination LUX Level StandardsLimiting Glare Index
Mars-balling and outdoor stockyards10-20–
Stain, gangways, basements, quarries, loading docks100–
Slab yards, melting shops! ingot stripping soaking
pits, blast furnace working areas, picking and
cleaning lines, mechanical plants, pump houses
10028
Mould preparation; rolling and wire mills, mill
motor rooms, power and blower houses
15028
Slab inspection and conditioning, cold strip mills,
sheet and plate finishing, tinning, galvanizing,
machine and roll shops
20028
Plate inspection300–
Tinplate inspectionSpecial lighting

Motor Vehicle Plants

Average Illumination LUX Level StandardsLimiting Glare Index
General sub-assemblies, chassis assembly, car assembly30025
Final inspection45025
Trim shops, body sub-assembly, body assembly30025
Spray booths450–

Rubber Processing

Average Illumination LUX Level StandardsLimiting Glare Index
Fabric preparation creels20025
Dipping, moulding, compounding calendars15025
Tyre and tube making20025

Sheet Metal Works

Average Illumination LUX Level StandardsLimiting Glare Index
Benchwork, scribing, pressing, punching, shearing, stamping, spinning, folding20025
Sheet inspectionSpecial lighting–

Warehouses and Bulk Stores

Average Illumination LUX Level StandardsLimiting Glare Index
Large material, loading bays10028
Small material, racks15025
Packing and dispatch15025

Lux Level standards for Welding and Soldering

Average Illumination LUX Level StandardsLimiting Glare Index
Gas and arc welding, rough spot welding15028
Medium soldering, brazing, and spot welding, for example, domestic hardware30025
Fine soldering and spot welding, for example, instruments, radio set assembly70022
Very fine soldering and spot welding, for example, radio valves15019

Woodworking Shops

Average Illumination LUX Level StandardsLimiting Glare Index
Rough sawing, and bench work15022
Sizing, planning, rough sanding, medium machine
and bench work, gluing, veneering, cooperage
20022
Fine bench and machine work, fine sanding and
finishing
30022

Perfect Pollucon Services offers Illumination Survey or LUX Level monitoring / testing and provide LUX Monitoring report for our clients. Feel free to contact our Environmental executive for more information.

What are recommended lux levels for an office?

In general, Offices are required to have LUX level at 500. In case of screen based devices such as Computers / laptops LUX levels can vary from 300-500.

What is the minimum illumination or Lux level is required in workplace i.e. working area?

The minimum level of illumination recommended for work in general offices is 200 lux. it is assumed that tasks like reading in general offices. in case of any detailed work is done then minimum illumination level needs to be around 500 LUX.

What is Standard lux level for residential?

At homes recommended illumination levels is often 150 lux. The living and dining rooms may work pretty well with about 25 to 50 lux. If you are doing tasks like reading then Lux level needs to be around 200.

What is the recommended lux level for a warehouse?

For warehouses, it is recommended to have LUX level around 150 at floor level and 200 LUX at rack level.

What are the Lux level standards for visual inspection?

For normal activities in any office should be 200 Lux, but for the work which requires scrutiny and detailing i.e. visual inspection lux level should be at least 500. Along with Lux level periodic rest is also required to the person who is performing inspection to avoid fatigue.

What are minimum lux level for construction sites?

At construction site where only movement of people, machinery and raw materials are involved then lux level 50 is more than sufficient. In case of any detailed work is being done then it is recommended to maintain lux levels minimum at 200 Lux at construction site at all the time.

What is lux level calculation?

The LUX level in a room is calculated from the following formula
E(LUX) = F(lm) x UF x MF / A
Where
lm is required lumens
E is the the LUX level achieved
UF is utilization factor
MF Maintenance factor
F is the average lumens value form the light source

Which activity requires the highest level of illumination?

Activities which involve detailed work, demand the highest level of illumination. Those activities can be operation theatre in hospitals, color inspection on paper or fabric, Autopsy table and dissecting table, etc.

What are standard lux level for bedrooms?

It is recommended that generally bedroom needs to have lux levels between 100 to 300 Lux. Incase of any activities like reading or painting LUX level should be more than 500 Lux.

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Lux level Standards in Industry