Quyết định 1629/LDTBXH-QD

MINISTRY OF LABOR, WAR INVALIDS AND SOCIAL AFFAIRS 
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SOCIALIST REPUBLIC OF VIETNAM
Independence - Freedom - Happiness
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No. 1629/LĐTBXH-QĐ

Hanoi, December 26, 1996

Le Duy Dong

(Signed)

No.

Occupation or work

Working conditions

Working conditions of class V

1

Smelting and casting aluminum and copper for wire drawing

Arduous works; static working posture, under the impact of heat and toxic gases

2

Smelting and refining antimony by reverberatory furnaces

Working in high temperature, in contact with As, CO, SiO2, Sb.

3

Smelting and refining tin with arsenic by reverberatory furnaces

Constantly in contact with high temperatures, As, CO, SiO2, Sb.

4

Burning arsenic and sulphur in tin ore and antimony ore

Constantly in contact with high temperatures, As, CO, SiO2, lead and Sb.

5

Refining lead ore

Working in high temperature, in contact with As, CO, SiO2, lead and Sb.

6

Non-ferrous metal ore flotation,

Constantly in contact with toxic chemicals such as H2SO4, CuSO4, ZnSO4, Chlorine and Sb.

7

Smelting and processing ZnO into powder by reverberatory furnaces or rotary furnaces

Constantly in contact with high temperatures, Pb, CO, ZnO.

8

Operating, repairing instruments that collect non-ferrous metal in electrostatic precipitator.

Working in high temperature; in contact with lead gas.

9

Smelting and pouring metal.

Arduous and dangerous works; under the impact of heat and toxic gases

10

Continuously burning and casting steel.

Arduous works; under the impact of heat, noise, and dust.

No.

Occupation or work

Working conditions

Working conditions of class VI

1

Digging trenches, wells, and geological boreholes in radioactive mine zones.

Outdoor, manual, very arduous and dangerous works; static working posture; constantly under the impact of radiation.

2

Aerial geophysics.

Very dangerous works, under the impact of loud noise and violent tremor.

3

Drilling in radioactive mine zones by hand or by machine.

Outdoor, swampy, arduous works; constantly under the impact of radiation

Working conditions of class V

4

Measuring well logging

Very dangerous works because of exposure to intense open radiation sources

5

Making geological, hydrographic-geological, and geophysical maps; hydrographic-geological observation; finding minerals in radioactive areas, highlands, bordering areas, or on islands.

Arduous and dangerous works; a lot of travel in steep highlands; under the impact of radiation.

6

Surveying, taking ore and radioactive samples from constructions (trenches, wells)

Working in highlands, working in confined spaces, static working posture, under the impact of radiation.

7

Geophysical surveys in radiation zones

Outdoor works in highlands; a lot of travel; under the impact of radiation.

8

Digging trenches and geological bores.

Manual, arduous and dangerous works; working in confined spaces, static working posture.

9

Processing and analyzing radioactive ore samples.

Constantly in contact with highly toxic chemicals and radiation.

10

Taking and sifting pan-concentrate samples

Outdoor, manual, arduous works; static working posture; a lot of travel.

11

Analyzing geological samples by Roentgen method, diffraction, Isotope-ratio mass spectrometry, scanning electron microscopy of microzone.

Constantly under the impact of excessive radiation and electromagnetic field.

12

Analyzing geological samples by Inductively coupled plasma spectrometry

Constantly in contact with electromagnetic field and strong acids such as HF, HCL, H2SO4, HNO3.

13

Topographical and construction geodesics in highlands, bordering areas, and islands.

Working outdoors in rough terrains, arduous.

14

Geological survey, geophysical survey, hydrographic-geological survey at sea.

Arduous works; under the impact of bad weather, noise, and tremor.

15

Geological drilling by hand

Manual, arduous works; static working posture; swampy and dirty workplace; immersing in water throughout the shift when working under in the river or sea.

No.

Occupation or work

Working conditions

Working conditions of class VI

1

Soldering in closed boxes or towers.

Working in confined spaces; static working posture; under the impact of heat and highly concentrated lead gas.

2

Producing pesticides.

Arduous works; in contact with highly toxic chemicals.

Working conditions of class V

3

Operating coal gas kilns in nitrogenous fertilizer production.

Arduous, hazardous works at a height, in contact with excessive CO.

4

Repairing coal gas kilns in nitrogenous fertilizer production.

Arduous and dangerous works; static working posture; in contact with CO.

5

Synthesizing ammonia (NH3) in nitrogenous fertilizer production.

Hazardous and dangerous works; constantly in contact with concentrated NH3.

6

Operating compressors in nitrogenous fertilizer production.

Dangerous works; in contact with noise and concentrated NH3.

7

Operating high-pressure and mid-pressure for ammonia and urea decomposition.

Dangerous and stressful works, in contact with to NH3.

8

Condensing, granulating, and concentrating urea.

In contact with toxic chemicals.

9

Producing salicylic acid, HNO3, H3PO4.

Constantly in contact with highly toxic chemicals.

10

Neutralizing superphosphate.

Constantly in contact with strong toxic chemicals and dust.

11

Operating the system of gas washing towers.

Hazardous works; constantly in contact with SO2, SO3 and H2SO4.

12

Drying for SO2 and SO3 absorption in acid and SO2 production.

Constantly in contact with H2SO4, SO3 and H2SO4.

13

Operating contacting instruments in H2SO4 production.

In contact with SO2 and SO3.

14

Producing iron oxide in superphosphate production.

Under the impact of heat, Fe2SO3 dust, and toxic poisons in contact with strong toxic chemicals.

15

Extracting H3PO4 from superphosphate

In contact with dust and compounds of fluorine.

16

Operating feeding winches of the blast furnace for producing melted phosphate fertilizer.

Hazardous works; in contact with CO, CO2, and H2S.

17

Collecting products blast furnace in the production of melted phosphate fertilizer.

In contact with CO, fluorine, and high temperature.

18

Operating the tower system that absorbs wastes from blast furnaces in the production of melted phosphate fertilizer.

In contact with noxious gases such as HF, SiF4, lime, furnace slag.

19

Operating hot air furnace in the production of CO and melted CO phosphate fertilizer.

Arduous works; in contact with highly toxic chemicals.

20

Producing pesticide additives

Under the impact of noxious dust, SiO2, and metal oxides.

21

Liquefying and bottling chlorine; producing pure HCl.

In contact with extremely toxic chlorine and HCl.

22

Handling excessive chlorine

Hazardous works; in contact with extremely toxic chlorine.

23

Grinding, sifting, drying, and processing welding electrode coating.

Arduous works; under the impact of heat, SiO2 dust, silicon, Na2SiF6, et.

24

Weighing blends, mixing welding electrode coating.

In contact with toxic chemicals.

25

Drying, grinding, bagging manganese ore.

Under the impact of heat, noise, and concentrated manganese dust.

26

Operating chain conveyor and rubber conveyor belt in the basement of the apatite beneficiation plant.

Underground, damp, lacking light and air, under the impact of noise and thick dust.

27

Operating GHIT sieving machine in the apatite beneficiation plant.

Underground, damp, under the impact of noise and dust.

28

Operating threshing machines under the apatite beneficiation plant.

Underground, damp, under the impact of dust and loud noise.

29

Operating mud pumps underground.

Underground, lacking light, swampy, damp, very arduous works; static working posture.

30

Soldering in chemical production.

In contact with concentrated lead gas.

31

Repairing furnaces and towers in chemical production.

Working in confined spaces, arduous, static working posture, under the impact of high temperature and strong chemicals.

32

Manual transporting and loading black coal.

Manual and arduous works; in contact with highly concentrated coal dust.

33

Repairing and dredging the underground sewer in the chemical factory.

Manual and very arduous works; static working posture, constantly in contract with wastes and toxic chemicals.

34

Producing chromium compounds

Constantly in contact with strong toxic chemicals.

No.

Occupation or work

Working conditions

Working conditions of class VI

1

Mechanical officers, mechanics, electricians on sea-going vessels and inshore vessels that transport goods, gasoline, oil, etc.

Very arduous and dangerous works; working in confined spaces; static working posture, under the impact of heat, tremor, and noise.

2

Drivers of specialized trucks with a load of 60 tonnes or more.

Arduous and dangerous works; under the impact of noise, tremor, and dust.

Working conditions of class V

3

Deck officers, electrical and radio officers, sailors, cooks, attendants, doctors, and administers on sea-going vessels and inshore vessels that transport goods, gasoline, oil, etc.

Arduous and dangerous works; under the impact of bad weather, noise, and tremor.

4

Drivers of buses have 80 seats or more.

Dangerous and stressful works; under the impact of noise and tremor.

5

Chief mechanics, mechanics of automated ferries, towing boats for ferries and river ships with a power of 90 CV or higher.

Working in confined spaces; under the impact of noise, tremor, and heat; constantly in contact with gas and oil; static working posture.

No.

Occupation or work

Working conditions

Working conditions of class VI

1

Construction divers.

Very arduous and dangerous works; static working posture, under the impact of high pressure.

2

Managing and operating lighthouses Truong Sa archipelago.

Constantly under the impact bad weather, noise, and extreme climate.

Working conditions of class V

3

Pulling up steel girders

Arduous and dangerous works; under the impact of tremor and noise.

4

Pouring concrete, building bridge abutments and bridge piers

Arduous and dangerous works; under the impact of tremor and noise.

5

Processing steel planks and piles; raising and lowering bridge beams.

Very arduous and dangerous works; under the impact of tremor and noise.

6

Removing rust by sandblasting

Outdoor, arduous, dangerous works; under the impact of noise, tremor, and very thick dust.

7

Operating pile drivers in construction.

Outdoor, arduous and dangerous works, in contact with oil, grease, noise; static working posture.

8

Operating floating cranks in bridge construction and installation of bridge beams.

Outdoor, arduous and dangerous works; under the impact of loud noise.

9

Fastening rivets on steel structures.

Outdoor, arduous and dangerous works; under the impact of noise, tremor, heat, CO and CO2 gases.

10

Boring into concrete to make pier foundation piles; pouring bentonite mortar into boreholes.

Outdoor, manual and arduous works; static working posture; always in contact with chemicals and noise.

11

Working with pier foundation among steel piles and planks

Outdoor, arduous and dangerous works; under the impact of noise.

12

Mixing paint and painting bridge beams

In contact with toxic chemicals; static working posture.

13

Welding steel beams.

Arduous, dangerous and stressful works; constantly in contact with noxious gases.

14

Using X-ray machine to photograph the welding joints of the steel beams and deck.

Outdoor works; static working posture, under the direct impact of X-ray.

15

Digging, lowering wells manually.

Manual, arduous and dangerous works; under the impact of dust and noise.

16

Destroying rock, piers, and beams underwater.

Arduous and dangerous works.

17

Operating hot asphalt mixer (without control room)

Under the impact of high temperature, noise, violent tremor, noxious gases , and thick dust.

18

Manually feeding plastic to plastic.

Very arduous, hazardous, and hot works.

19

Manually melting, pouring hot asphalt, and mending road surface.

Arduous works; constantly exposed to toxic gases, dust, and heat radiation.

20

Building, assembling, repairing lighthouses.

Manual, arduous, dangerous works; under the impact of bad weather.

21

Managing and operating lighthouses on islands and at estuaries.

Under the impact of bad weather and extreme climate.

22

Sweeping coal and fertilizer in the hold of ships or barges

Working in confined spaces, lacking oxygen; manual and arduous works; static working posture.

23

Chocking divers

Arduous and dangerous works; static working posture.

24

Bottom-painting and derusting ships.

Arduous works; static working posture; the workplace lacks oxygen and stinks.

25

Surveying, checking, and announcing navigable channels at river mouths and estuaries.

Constantly outdoor, on rivers, in stinky and dirty environments.

26

Turn on lights on buoys on navigable channels, estuaries, lakes, and along navigable rivers.

Outdoor and dangerous works; static working posture, under the impact of bad weather.

No.

Occupation or work

Working conditions

Working conditions of class VI

1

Operating drills underground.

Working in closed cellars, lacking oxygen; arduous and dangerous works; static working posture; constantly under the impact of noise, tremor, and rock dust.

2

Detonating mines underground.

Arduous and very dangerous works; under the impact of noise, dust, and NO2.

Working conditions of class V

3

Operating vehicles and machines underground.

Arduous and dangerous works; under the impact of noise, tremor, and dust.

4

Operating, assembling, repairing construction machines underground.

Dangerous works in noisy and dusty environments.

5

Manual construction underground.

Manual, arduous, and dangerous works; under the impact of noise and dust.

6

Installing and repairing on high-voltage power line at 110kV or above.

Very arduous and dangerous works at a height; static working posture.

7

Electric or gas welding underground.

The workplace is confined, lacks light, air; static working posture, under the impact of noxious gases.

No.

Occupation or work

Working conditions

Working conditions of class VI

1

Dredging underground sewers in urban areas.

Manual and arduous works in stinky environment; lacking light and oxygen.

Working conditions of class V

2

Burying dead bodies.

Very arduous, hazardous, and stressful.

3

Dredging horizontal sewers.

Constantly in contact with dirty water; stinky, lacking light and oxygen.

4

Building, repairing underground sewer.

Arduous works; in contact with dirty and stinky water.

5

Cleaning two-compartment latrine and toilets

Arduous works; in contact with dirty and stinky wastes.

6

Shoveling and leveling landfills

Arduous works, often in severely polluted environments.

7

Processing garbage.

Working in polluted environments.

8

Cutting down trees and branches.

Dangerous works at a high; manual and arduous works.

No.

Occupation or work

Working conditions

Working conditions of class V

1

Operating clinker kiln (vertical shaft kiln)

Manual and arduous works; under the impact of heat, dust, and toxic gases.

2

Manually bagging cement

Arduous works; constantly under the impact of heat and highly concentrated dust.

3

Cleaning under grinding mill

Manual and arduous works; under the impact of noise; constantly soaking in dirty water.

4

Mixing and cleaving stones.

Outdoor, manual, and very arduous works.

No.

Occupation or work

Working conditions

Working conditions of class V

1

Firing lime kiln, and selecting hot lime (manual kilns).

Working with blast furnace; manual and arduous works; under the impact of heat, and toxic dust.

2

Pouring cement or discharging cement from concrete mixers.

Manual and very arduous works; under the impact of highly concentrated cement dust.

3

Cutting, grinding granite marble or stone slabs.

Arduous works; under the impact of noise, tremor, and dust.

4

Sandblasting to blur glass.

Working in dusty environments; under the impact of noise and tremor.

5

Operating crushers or grinders for producing firebricks.

Under the impact of loud noise and dust with highly concentrated SiO2.

No.

Occupation or work

Working conditions

Working conditions of class V

1

Manual transporting and loading tobacco.

Manual, very arduous work; static working posture, constantly in contract with nicotine, dust, and molds and fungi.

2

Spraying menthol.

Working in closed and confined rooms; in direct contact with concentrated menthol and nicotine.

No.

Occupation or work

Working conditions

Working conditions of class V

1

Operating and repairing machines for electrolyzing and testing soda-chlorine

Arduous and hazardous works; constantly in contact with asbestos dust and toxic chemicals

2

Operating heat recovery steam generators.

Arduous and dangerous works; constantly in contact with toxic chemicals

3

Manually shoveling, transporting, and feeding lime powder to make slaked lime.

Manual and arduous works; constantly in contact with excessive lime dust.

No.

Occupation or work

Working conditions

Working conditions of class V

1

Producing opium glue and derivatives of opium glue.

Arduous works; constantly in contact with opium, toxic and hot chemicals.

2

Producing ether.

Dangerous works; constantly in contact with ether, mercury, alcohol, and acids, which affect the nerves.

3

Producing pharmaceutical products using organic solvents.

Arduous works; under the impact of heat, strong toxic chemicals.

4

Producing antibiotic materials.

Arduous works; constantly in contact with toxic chemicals and heat which likely to cause allergy and drug resistance.

5

Producing artemisinin and its derivatives.

Arduous works; constantly under the impact of heat, strong toxic chemicals, And gasoline, which affect pigmentation.

6

Concocting poisons in class A and B.

Arduous works; under the impact of poisons, organic and inorganic solvents, heat, dust, and noise.

7

Grinding, sieving, concocting antibiotics, hormones, psychotropic drugs, addictive drugs, anti-malaria medications.

Constantly in contact with poisons that cause drug resistance, allergies, and affect the nerves.

No.

Occupation or work

Working conditions

Working conditions of class V

1

Planning investigation in highlands, forests, and on islands.

Frequent travel on difficult terrains; arduous and dangerous works

No.

Occupation or work

Working conditions

Working conditions of class VI

1

Diving to survey irrigation works.

Arduous and dangerous works; static working posture; under the impact of high pressure.

2

Mechanical officers and mechanics.

Very arduous works; static working posture; under the impact of heat, loud noise, and violent tremor.

3

Operating track-type grab dredgers with the bucket of at least 16 m³.

Very arduous works; under the impact of dust, loud noise, violent tremor, and anxiety

Working conditions of class V

4

Operating and repairing electric pumps at pumping systems with at least 5 pumps and a total output above 100,000 m³/h.

Constant travel; under the impact of loud noise; static working posture.

5

Operating grab dredger.

Outdoor works on rivers; arduous works; in contact with dust, noise, tremor, and grease.

6

Operating track-type grab dredgers with a power above 220CV.

Arduous and dangerous works; under the impact of heat, noise, and tremor.

7

Assembling at a height.

Outdoor, arduous, dangerous, and stressful works.

8

Investigating and surveying irrigation works.

Frequent travel in remote and solitary areas; arduous works.

9

Drilling to handle the body and foundation of irrigation works.

Arduous works; static working posture; under the impact of noise, tremor, and concentrated dust.

No.

Occupation or work

Working conditions

Working conditions of class V

1

Basic land survey in highlands, forests, bordering areas, and on islands.

Very arduous and dangerous works; constantly working in highlands and on islands.

2

Surveying and drawing maps in bordering areas and highlands.

Very arduous and dangerous works; constantly working in highlands and on islands.

No.

Occupation or work

Working conditions

Working conditions of class VI

1

Meteorological and oceanographical observation in Truong Sa archipelago and Area DK I.

Outdoor works, day and night, dangerous; under the impact of bad weather.

Working conditions of class V

2

Meteorological and oceanographical observation on the other islands.

Outdoor works, day and night, dangerous.

No.

Occupation or work

Working conditions

Working conditions of class VI

1

Diving to collect oceanic samples and study underwater ecosystems.

Very arduous and dangerous works in bad weather; static working posture.

2

Measuring radiation doses, testing environmental radiation; operating and maintaining generator Notro NA-3C and accelerator Microtron M-17particle

Constantly exposed to intense radiation sources.

Working conditions of class V

3

Processing, producing, measuring, and analyzing radioactive samples.

Exposed to intense radiation sources.

4

Studying and using radiation sources in laboratories.

 Exposed to intense radiation sources.

5

Keeping and preserving sources of radioactive samples.

 Exposed to intense radiation sources.

6

Studying the fabrication of inorganic materials and catalysts.

 In contact with toxic chemicals: H2SO4, HNO3, xylene, etc.

7

Analyzing chemical formulae and structures of rare radioactive samples.

Under the impact of radioactive substances and toxic chemicals such as Hg, H2SO4, HF, benzene, etc.

8

Synthesizing and analyzing organic compounds.

In contact with highly toxic inorganic solvents and chemicals such as: benzene, toluene, chlorine, methanol, etc.

9

Processing and making plant specimens.

In contact with toxic organic solvents and chemicals such as HgCl, alcohol, arsenic, formaldehyde.

10

Molecular biology and genetic technology.

 In contact with to toxic chemicals such as: KCL, chloroform, tetrodotoxin, and substances that cause mutation.

11

Microorganism technology

In contact with toxic chemicals such as: KCL, chloroform, acetone, etc., substances that cause mutation, and pathogenic microorganisms

12

Animal and plant cell technology

In contact with toxic organic solvents and chemicals such as: benzene, toluene, chloroform, acetone, and radioactive isotopes.

No.

Occupation or work

Working conditions

Working conditions of class VI

1

Contortionists, acrobats, and other circus performers at a height.

Very arduous, dangerous, and stressful works; under the impact of noise and intense light.

Working conditions of class V

2

Archaeological survey and excavation.

Frequent travel; very arduous works; in contact with highly toxic chemicals and gases in tombs.

3

Ballet dancers, traditional dancers, and traditional singers.

Very arduous, and stressful works; under the impact of noise and intense light.

4

Water puppeteers.

Always soaking in dirty water (in both summer and winter); arduous works; constantly in contact with pathogenic microorganisms, noise, and firecracker smoke.

5

Animal tamers.

Dangerous and stressful works; under the impact of noise and intense light.

6

Circus performers.

Dangerous and stressful works; under the impact of noise and intense light.

7

Wind instrument musicians, conductors.

Very stressful works; under the impact of loud noise and intense light.

8

Operating, repairing, and maintaining technical equipment in museum basement.

Underground works; under the impact of loud noise, gasoline, and oil.

No.

Occupation or work

Working conditions

Working conditions of class VI

1

Airplane pilots.

Dangerous, and stressful works; under the impact of noise, tremor, change in temperature and pressure.

2

Operating, maintaining and repairing radars; observing radars.

Under the impact of noise and ultra-high-frequency electromagnetic field.

Working conditions of class V

3

Flight attendants

Stressful works; under the impact of noise, tremor, change in temperature and pressure.

4

Moving, installing plane radars.

Under the impact of loud noise and radiation.

5

Air traffic control: directing long-distance flights, guiding airplanes to approach, take off, and land at the airport.

Under the impact of noise and electromagnetic field; stressful works with high responsibility.

6

Operating, repairing, and maintaining UHF communication machines from 300 to 3000 MHz

Under the impact of noise and high-frequency electromagnetic field.

7

Installing radars.

Outdoor works; static working posture: under the impact of ultra-high-frequency electromagnetic field.

8

Loading and unloading baggage.

Arduous works; under the impact of heat, noise, and dust.

9

Shaping, welding, mending, and covering airplane wings.

Manual and arduous works; under the impact of noxious gases, dust, and noise.

Working conditions of class V

10

Drivers of specialized trucks used for transporting airplane gasoline with a capacity of 16,5 tonnes or more.

Arduous and dangerous works; under the impact of heat, noise, and tremor.

11

Installing, maintaining, repairing aviation antennae at a height of 50 m or higher.

Manual, arduous, dangerous, and outdoor works; static working posture; under the impact of electromagnetic field, dust, and paint solvent.

12

Installing, repairing, and maintaining aviation communication lines.

Outdoor and arduous works; under the impact of noise, dust, and electromagnetic field.

No.

Occupation or work

Working conditions

Working conditions of class VI

1

Operating, repairing, and maintaining engines of offshore and onshore fishing ships.

Very arduous and dangerous works, static working posture, under the impact of heat, tremor, gasoline, oil, and very loud noise.

Working conditions of class V

2

Officers and crew members working on offshore and onshore fishing ships.

Arduous and dangerous works, under the impact of bad weather, noise, and tremor.

3

Harvesting swallow’s nest

Constantly working on remote islands, arduous and very dangerous works.

4

Operating machines for grinding, crushing, and drying seafood waste for animal feed.

Working in stinky and dirty environments; under the impact of heat, noise, dust, fungi, and pathogenic microorganisms.

No.

Occupation or work

Working conditions

Working conditions of class IV

1

Metal and cyanide plating

Arduous works; in contact with lead gas.

2

Painting and drying ferrosilicon core.

Under the impact of heat and paint solvent.

3

Electric or gas welding.

Under the impact of heat and noxious gases.

4

Dry metal grinding.

In contact with rock dust, metal dust, tremor, and noise.

5

Applying mastic and spraying paint on engines.

Arduous works; under the impact of dust, paint solvent, and gasoline vapor.

6

Operating cast iron lathes

Dusty, causing optical strain, and requiring great concentration

7

Manually hitting cast iron.

Arduous works; in contact with cast iron dust.

8

Mixing sand and clay to make moulds.

Arduous works; under the impact of heat and dust.

9

Breaking moulds

Arduous works; under impact of heat, dust, and tremor.

10

Sieving sand by machines to make moulds.

Arduous works, under impact of dust and noise; static working posture.

11

Pressing bakelite

Under the impact of heat, dust, and noxious gases.

12

Drying moulds by coal stoves.

Arduous works; under the impact of heat, dust, and noxious gases.

13

Operating metal punching machines

Hot and noisy works, causing optical strain.

14

Operating cranes in mechanical casting shops.

Hot, dusty, and stressful.

15

Operating cast iron lathes and rubber roll huskers.

Arduous works; in contact with cast iron dust and rubber dust.

16

Drawing copper and aluminum wire.

Arduous works; in contact with loud noise.

17

Heating, pressing, shaping copper and aluminum.

Arduous works, under the impact of noise and noxious gases.

18

Applying insulating coating and paint on electric wires.

Arduous works, under the impact of noise and noxious gases.

19

Producing PVC, PP, PE grain.

Arduous works; in contact with noise, dust, and noxious gases.

20

Covering electric wire with PVC, PP, PE.

Constantly under the impact heat and noxious gases.

21

Smelting and casting cast iron in workshops.

Arduous and dangerous works; under the impact of heat and dust.

22

Cleaning casting products.

Arduous works; under the impact of heat, noise, and dust.

23

Die casting metal (aluminum, copper).

Arduous works; under the impact of heat and dust.

24

Soldering pesticide tanks

Under the impact of heat and pesticides; static working posture.

25

Drawing and rolling steel wires.

Arduous works; under the impact of heat, noise, and dust.

26

Sampling, analyzing metal ore and products.

Constantly under the impact of heat, dust, As, CO, Mg.

27

Preserving, loading, packing non-ferrous metal ore and products.

Arduous works; in contact with As, Pb, SiO2, ZnO, Mg and Sb.

28

Mechanical and electrical repairs of ZnO and Sb processing lines; magnetic separation, flotation.

Constantly under the impact of heat, dust, and toxic chemicals; static working posture.

29

Drying and bagging chromium ore.

Arduous works; under the impact of heat, chromium, and SiO2.

30

Manual extraction of non-ferrous metal ore.

Outdoor, manual, and arduous works; under the impact of heat and dust.

31

Dipping lineman’s pliers into xylene

Under the impact of heat, xylene, pine oil, and gasoline

32

Pressing lineman’s pliers

Under the impact of heat and noxious gases.

No.

Occupation or work

Working conditions

Working conditions of class IV

1

 Fetching, discharging water in hydrographic geology research.

Outdoor, manual, and arduous works.

2

Pumping, draining water in hydrographic geology boreholes.

Outdoor, manual, and arduous works.

3

Analyzing geological samples by chemical, physical, thermal, and mechanical methods.

Under the impact of noise, dust, heat and toxic chemical.

4

Processing and separating geological samples.

Under the impact of noise and mineral dust.

5

Analyzing geological samples by arc emission spectrometry.

Under the impact heat, electromagnetic field, and noxious gases.

6

Analyzing gold or silver samples by heating.

Under the impact of heat and toxic chemicals.

7

Operating geological drilling machines

Dangerous works; under the impact tremor and noise.

8

Operating geological drilling machines.

Outdoor, arduous works in swampy places; static working posture.

No.

Occupation or work

Working conditions

Working conditions of class IV

1

Sieving, drying chemicals and rubber blends.

Under the impact of heat, dust, and toxic chemicals.

2

Recycling rubber.

Arduous works; in contact with coal dust and toxic chemicals.

3

Vulcanize rubber products.

Arduous works; in contact with to toxic chemicals.

4

Making industry conveyor belts.

Arduous works; in contact with organic solvents (benzene) and toxic chemicals.

5

Applying pressure to shape tires and inner tubes of cars, airplanes, and tractors.

Arduous works; under the impact of heat, chemicals and inorganic solvents.

6

Synthesizing ankit plastic to produce paint.

In contact with phenol, benzene, and xylene.

7

Smelting and rolling zinc in battery production.

Under the impact of heat, dust, and toxic chemicals.

8

Operating carbon rod furnaces in battery production.

Under the impact of heat, inorganic solvents, and dust.

9

Mixing anode powder in battery production.

In contact with electrolytic chemicals and dust

10

Mixing powder to press carbon rods in battery production.

Under the impact of heat and coal dust.

11

Producing C2H2 and acetylene soot.

Dangerous works; in contact with coal dust and noxious gases.

12

Operating condensing pumps in apatite beneficiation.

Damp environment; in contact with acids and acid salt.

13

Operating pumps to supply acids and contact boxes in apatite beneficiation.

In contact with strong and concentrated acids.

14

Recycling copper solution.

In contact with strong inorganic acids.

15

Producing ammonium carbonate.

In contact with strong acids and Cl2.

16

Operating washing towers with copper solution in nitrogenous fertilizer production.

In contact with soda and solutions of corrosive organic salts.

17

Bottling materials, gaseous and liquid products in chemical industry

Working with toxic chemicals: C2H2, NH3, CO2.

18

Bagging and loading urea.

Arduous works; in contact with dust and NH3.

19

Producing activated carbon.

Constantly in contact with NH3.

20

Producing barium carbonate (BaCO3).

Arduous works; in contact with dust and H2SO4.

21

Producing sulfide salts.

In contact with concentrated H2SO4.

22

Producing tripoly.

In contact with dust and H3PO4.

23

Producing filtered water used for chemical production.

Damp workplace; in contact with chlorine and bleach.

24

Operating cranes and machines to collect melted phosphate fertilizer.

Damp workplace; in contact with dust and strong toxic chemicals (HF).

25

Feeding blast furnaces in the production of melted phosphate fertilizer.

In contact with fossil coal dust, CO, H2S, and CO2 at high temperature.

26

Operating conveyor belts that carry melted phosphate fertilizer.

A lot of travel; in contact with noise and very thick dust..

27

Operating heavy-duty fans and blast furnaces in the production of melted phosphate fertilizer.

Under the impact of noise, tremor, and dust.

28

Checking blast furnaces in the production of melted phosphate fertilizer.

Working in high temperature, in contact with CO, fluorine, HF.

29

Operating cranes to deed driers.

Under the impact of heat and dust.

30

Operating rotary driers in the production of melted phosphate fertilizer.

Under the impact of heat and dust.

31

Operating rotary driers in the production of melted phosphate fertilizer.

In contact with dust and noise.

32

Operating furnaces to provide heat for driers.

Under the impact of heat, dust, and CO gas.

33

Operating conveyor belts that carry finished phosphate fertilizer.

In contact with dust and noise.

34

Operating phosphate fertilizer bagging machines.

Arduous works; under the impact of very thick dust and noise.

35

Loading and transporting bags of phosphate fertilizer.

Manual and very arduous works; under the impact of dust.

36

Operating material crushers for producing phosphate fertilizer.

Arduous works; under the impact of noise and dust.

37

Operating conveyor belts in phosphate fertilizer production line.

Constantly in contact with dust and noise.

38

Operating equipment that sieve and filter dry or wet materials in chemical production.

Damp workplace; in contact with dust and noise.

39

Sieving, filtering, and transporting coal in chemical fertilizer production.

Arduous works; under the impact of dust.

40

Transporting blast furnace dust in the production of melted phosphate fertilizer.

Arduous works; in contact with dust and noxious gases from blast furnace smoke.

41

Pressing fine apatite ore and coal dust in phosphate fertilizer production.

Outdoor arduous works; in contact with dust.

42

Electrolyzing NaCl solution to produce NaOH.

Working with chlorine and saturated solutions.

43

Condensing NaOH.

In contact with caustic soda.

44

Repairing electrolytic tank in NaOH production.

In contact with strong poisons such as NaOH and acids.

45

Producing alum

In contact with dust, H2SO4, SO2 and SO3 gases.

46

Mixing and pressing welding electrode coating.

In contact with MnO2 and SiO2 dust.

47

Drying welding electrodes in electric ovens.

Under the impact of heat and fri dust.

48

Cleaning the surface of welding electrode cores.

Constantly in contact with iron dust and acids.

49

Crushing, rolling, stirring, mixing, and canning paint.

In contact with phenol, xylene, benzene, chrome oxide, iron, and zinc.

50

Boiling wax in battery production.

Working in hot, flammable, and hazardous environments.

51

Separating manganese by gravity method in battery production.

Arduous works; in contact with manganese dust.

52

Operating machines for … and sieving manganese ore.

Arduous works; in contact with dust and noise.

53

Cutting cloth, gluing pipes, tires of airplanes, tractors, motorbikes, and cars.

In contact with gasoline and organic solvents.

54

Producing high-pressure rubber pipes.

Arduous works; in contact with catalysts and sulphur.

55

Carving tyre moulds.

Under the impact of noise and metal dust.

56

Producing CaCO3 powder

In contact with SiO2 dust and lime.

57

Operating chain conveyor and rubber conveyor belt in apatite ore beneficiation.

Under the impact of noise, tremor, and dust.

58

Operating wet-sieving machine in apatite ore beneficiation.

Damp workplace, under the impact of noise and tremor.

59

Operating crushers to classify apatite ore.

Working in damp environments under the impact of noise, tremor, and dust.

60

Operating machines for supplying chemicals for apatite ore beneficiation.

Constantly in contact with toxic chemicals.

61

Concocting chemicals for apatite ore flotation.

Constantly in contact with toxic chemicals.

62

Operating apatite ore filtration system.

In contact with acids and organic solvents.

63

Operating apatite ore drying system.

Under the impact of dust, noise and heat.

64

Producing PVC pipes

Under the impact of heat, dust, and noxious gases.

65

Operating PP and PE bag weaving machines.

Standing throughout the shift; under the impact of noise, tremor, and dust.

66

Operating boilers in chemical production.

In contact with dust and smoke from materials, oil, grease, and heat.

67

Operating air compressors in chemical production.

Under the impact of noise, tremor, and chemicals.

68

Mechanical and electrical repairs in chemical production.

Working with toxic chemicals: C2H2, NH3, CO2.

69

Anti-corrosive lining in chemical production line.

Static working posture, constantly in contact with toxic chemicals.

70

Repairing measuring devices in chemical production.

Working with toxic chemicals; static working posture.

71

Operating acid and base pumps in chemical production.

Constantly in contact with toxic alkalis and acids.

72

Cleaning chemical factories.

Manual and arduous works with toxic chemicals.

73

Directly providing technical guidance in chemical production lines.

Processing complicated works; under the impact of noise, dust, and toxic chemicals.

74

Producing pure chemicals.

Manual and arduous works with toxic chemicals.

75

Operating machines for ore flotation.

Under the impact of noise and tremor.

76

Operating machines for flotation chemicals supply.

In contact with acids and organic solvents.

77

Producing soap cream and soap powder

Under the impact of toxic dust and chemicals.

No.

Occupation or work

Working conditions

Working conditions of class IV

1

Captain, vice-captain, sailors on ferries; operating towing boats for ferries.

Under the impact of bad weather, noise, tremor; constantly in contact with oil and gas.

2

Operating wheel-type heavy equipment to build road.

Arduous works; under the impact of heat, tremor, and dust.

3

Driving trucks from 7 tonnes to below 20 tonnes.

Arduous, stressful, noisy, shaking, dangerous.

4

Driving passenger buses from 40 seats to fewer than 80 seats.

A lot of travel, dangerous, stressful, under the impact of noise and tremor.

No.

Occupation or work

Working conditions

Working conditions of class IV

1

Casting prestressed concrete bridge beams, centrifugal pipes.

Arduous works; under the impact of heat, loud noise, and dust.

2

Welding steel pipes serving bored piles

Outdoor works; static working posture, under the direct impact of noxious gases (welding gas).

3

Making formworks to cast bride beams, abutment, and piers; building suspension bridges.

Outdoor, arduous, and dangerous works.

4

Operating concrete rammers.

Arduous works; under the impact of heat, noise, and dust.

5

Casting prestressed concrete

Outdoor, arduous works; under the impact of noise and dust.

6

Operating automated hot asphalt mixing station (with control room)

Under the impact of noise; stressful.

7

Operating plastic boilers, stone drier, insulating boilers at the hot asphalt mixing station.

Outdoor works; under the impact of noxious gases and thick dust.

8

Working at the hot asphalt mixing station (transporting materials, fuel, feeding rock flour to the conveyor belt; shoveling rock flour discharged by the drier; cleaning oil, coal, etc.; spraying oil on the tank of the hot asphalt truck

Outdoor, manual, and arduous works; in contact with noxious gases and dust.

9

Repairing mechanical procedure at the hot asphalt mixing station.

Outdoor works; static working posture, under the direct impact of noxious gases and dust.

10

Driving road rollers.

Arduous works; under the impact of noise, tremor, heat, and thick dust.

11

Remote-controlling the compressed-air blower or hot asphalt sprayer or paver.

Outdoor works; under the impact of noise, tremor, noxious gases and heat.

12

Digging, shoveling, leveling road surface behind the hot asphalt paver.

Outdoor, manual and arduous works; under the impact of heat and noxious gases.

13

Producing concrete, asphalt, emulsion.

Constantly under the impact of heat, rock dust, noxious gases (hydrocarbide acid and other additives).

14

Maintaining roads and bridges.

Outdoor, manual and arduous works; under the impact of dust.

15

Navigators.

Standing in the bridge throughout the journey; requiring great concentration; stressful.

16

Bagging phosphate, apatite, phosphate fertilizer, urea, etc. in depots, ports, and train stations.

Manual and arduous, static working posture, under the impact of toxic dust.

17

Topography and geological survey on land, on rivers, and at sea.

Arduous works; a lot of travel; under the impact of dust.

18

Repairing, installing electricity system and pipeline in the ship hold.

Working in confined spaces; static working posture; arduous works.

19

Working in the hold of the ship or barge.

Under the impact of heat and lack of oxygen.

No.

Occupation or work

Working conditions

Working conditions of class IV

1

Inspecting, supervising, and providing technical guidance underground.

Working in noisy and dusty environments.

2

Operating concrete mixers.

Frequent works in noisy and dusty environments.

3

Operating mortar pumps or concrete pumps.

Arduous works; under the impact of noise.

4

Building, installing, repairing power lines below 110 kV

Arduous and dangerous works, static working posture.

No.

Occupation or work

Working conditions

Working conditions of class IV

1

Cleaning animal cages.

Manual works in dirty and stinky environments.

2

Keeping morgues, cemeteries, crematories

Monotonous works which affect the mentality.

3

Maintaining, dredging canals, rivers, sewers.

Outdoor and arduous works, in contact with mud and dirty water.

4

Operating dredgers and sewage pumps.

Working in severely polluted environments; under the impact of noise.

5

Collecting garbage at ship/bus terminals; collecting garbage on the street.

Constantly in contact with garbage and thick dust.

6

Raising dangerous animals.

Arduous and dangerous works.

7

Driving and operating specialized vehicles for transporting fertilizer or garbage.

Working in environments polluted with garbage.

8

Cleaning public restrooms at ship/bus terminals

Manual and arduous works in polluted environments.

9

Sucking feces and mud.

Constantly working in dirty and stinky environments.

No.

Occupation or work

Working conditions

Working conditions of class IV

1

Cleaning kilns

Manual and arduous works; under the impact of heat and thick dust.

2

Moving cement by trolleys

Manual and arduous works; under the impact of heat and dust.

3

Unloading coal slag and plaster

Outdoor, manual and arduous works; under the impact of excessive coal dust.

4

Processing for producing cement by vertical shaft kilns (semi-manual breaking, crushing, grinding stones).

Outdoor, manual and arduous works; under the impact of excessive dust.

5

Repairing equipment for cement production in primary workshops.

Arduous works, under impact of thick dust and heat; static working posture.

6

Cleaning primary workshops.

Manual and arduous works, under impact of thick dust and noise; static working posture.

7

Rolling clinker into small balls in the vertical shaft kiln.

Manual and arduous works in hot and dusty environments.

8

Operating clinker rotary kiln

Working in hot, dusty, and noisy environments.

9

Operating clinker loaders in the warehouse.

Arduous works; under the impact of noise and thick dust.

10

Operating cyclone heat exchangers.

Manual and arduous works; under the impact of heat and dust.

11

Operating the cement silo

Manual and arduous works; under the impact of noise and dust.

No.

Occupation or work

Working conditions

Working conditions of class IV

1

Operating and repairing glass smelters

Under the impact of dust and heat.

2

Operating equipment for processing materials for glass production (breaking, grinding, crushing chamotte).

Under the impact of noise and dust with high concentration of SiO2.

3

Burning bricks in Hoffman kilns, tunnel kilns, manual kilns.

Manual and arduous works on top of the kiln; under the impact of heat, coal dust, and CO gas.

4

Loading and unloading bricks from the Hoffman kiln.

Manual and arduous works; working in confined spaces; static working posture; hot and dusty

5

Bagging chamotte mortar, patching and changing soda bags.

Manual and arduous works in dusty environments (with high concentration of SiO2).

6

Unclogging, repairing boilers, oil pipes, and oil pumps from the barge.

Manual and arduous works; working in confined spaces; static working posture; always in contact with dust, SO2, and oil.

7

Operating and repairing the glass tempering kiln.

Working in excessively damp and noisy environments.

8

Feeding materials for glass production.

Manual and arduous works in a hot and dusty environment.

9

Controlling the burner of the firebrick drier.

Working in a hot, noisy and dusty environment.

10

Repairing and maintaining the tunnel kiln.

Manual and arduous works; working in confined spaces; static working posture.

11

Operating and repairing glass forming machines.

Working in a hot environment.

12

Producing asbestos axles of glass forming machines.

Working in a noisy and dusty environment.

13

Shaping firebricks by rammers or by hand.

Working in a noisy and dusty environment.

14

Spraying glaze, rinsing and cleaning ceramic sanitary ware.

Manual and arduous works in a hot and dusty environment.

15

Drying and operating FO oil pumping station.

Working underground; hot, noisy, lacking oxygen.

16

Operating centrifuges and rammers in the production of precast concrete.

Working in a noisy and shaking environment.

17

Cutting, breaking, hanging, removing, grinding, and drilling glass.

Working in a hot, noisy, and dusty environment.

18

Directly working in the production line of car brake pads.

Working in a hot and noisy environment with asbestos dust.

19

Operating the firebrick pressing machine.

In contact with dust with high concentration of SiO2.

20

Manually breaking and selecting chamotte.

Outdoor, manual, and arduous works.

21

Removing slag and classifying fire brick.

Manual, arduous, and dusty works;

22

Checking bricks from the tunnel kiln

Manual, arduous, and dusty works;

23

Drying, scrambling bricks in glass houses.

Manual works with a lot of travel.

24

Processing, pouring mortars in the production of ceramic sanitary ware.

Working in a noisy and dusty environment.

25

Making moulds of ceramic and glass products.

Manual, arduous, and dusty works;

26

Breaking plaster moulds.

Manual and arduous works.

27

Moving, arranging ceramic and glass products in driers.

Manual works in a hot and dusty environment.

28

Operating the asbestos crusher.

Under the impact of excessive dust and noise.

29

Processing raw materials for producing tiles ceramic sanitary ware.

Working in a hot, noisy and dusty environment.

30

Mixing raw materials for producing marble tiles

Working in a hot, noisy and dusty environment.

31

Processing steel rebars in the production of precast concrete.

Manual arduous works in a noisy and dusty environment.

32

Boiling glue; producing mastic, ojalit paper, preparing ojalit ink.

Constantly in contact with toxic chemicals.

33

Steaming concrete slabs

In contact with toxic chemicals.

34

Applying anti-decay chemicals.

In contact with toxic chemicals.

35

Drying bamboo matting treated with phenolic adhesives.

Manual works; in contact with toxic chemicals such as HCl and phenol.

No.

Occupation or work

Working conditions

Working conditions of class IV

1

Inspecting tobacco quality.

Static working posture, constantly in contact with nicotine, fungi, pathogenic bacteria.

2

Keeping tobacco warehouses; preserving tobacco.

Working in closed rooms that lack oxygen; in contact with concentrated nicotine; static working posture.

3

Drying, vacuum steaming, cutting tobacco stems and tips.

Constantly in contact with nicotine, fungi, pathogenic bacteria.

4

Operating tobacco shred processing lines.

Under the impact of dust, noise, and nicotine.

5

Taking, packing, moving additives and tobacco shreds in the facility.

Manual and arduous works; in contact with nicotine and tobacco dust.

6

Operating tobacco rolling and packing machines.

In contact with noise, dust and nicotine.

7

Cleaning the workshops where tobacco is manufactured and wastes are treated.

Constantly in contact with tobacco dust and concentrated nicotine.

8

Operating tobacco roasting stoves.

Arduous works; static working posture; under the impact of heat, tobacco dust, and concentrated nicotine.

9

Classifying, processing tobacco leaves; processing moldy tobacco leaves.

Static working posture; in contact with molds, fungi, bacteria, and concentrated nicotine.

10

Operating machines for shredding and sieving rotten cigarettes.

Working in confined spaces, static working posture; under the impact of tobacco dust and nicotine.

11

Sieving, roasting, and crushing tobacco flour.

Under the impact of concentrated tobacco dust and excessive nicotine.

12

Mixing and rolling tobacco flakes.

Arduous works; under the impact of concentrated tobacco dust and nicotine.

13

Cleaning, shredding, sieving dumped rolling paper.

Arduous works; under the impact of nicotine and dust.

14

Operating tobacco package and additive printing machines.

Constantly in contact with excessive noise and toluene.

15

Boiling rolling glue.

Arduous works; in contact with dust and toxic chemicals such as HCl, distrine, CO.

16

Operating the ventilation system.

A lot of travel, under the impact of dust, noise, and nicotine.

17

Manually stripping, humidifying tobacco manually.

Arduous work; static working posture, in contact with dust, molds, fungi, and highly concentrated nicotine.

18

Operating tobacco dedusting machines.

Working in closed rooms; under the impact of loud noise and excessive nicotine.

No.

Occupation or work

Working conditions

Working conditions of class IV

1

Transporting raw materials (bamboo, rattan, flour) manually.

Outdoor, manual and arduous works; static working posture; under the impact of dust.

2

Operating the wood peeling machine, material feeding, chopping, sieving machines

Working at a height; under the impact of excessive noise and dust; static working posture.

3

Producing paper pulp by mechanical, thermal, and chemical methods.

Arduous works, under the impact of noise, heat, dust, and poisons.

4

Operating paper machines.

Standing to observe throughout the shift; under the impact of noise, heat, and dust.

5

Semi-manually rolling and cutting toilet paper.

Arduous works; static working posture, under the impact of noise and dust.

6

Operating paper coating machines.

Arduous and dangerous works; under the impact of heat and toxic chemicals.

7

Producing paper coating.

Arduous works; static working posture, under the impact of dust, noise, and toxic chemicals.

8

Producing lime.

Constantly under the impact of heat, noise and very thick dust.

9

Distillation, alkalization

A lot of walking, under the impact of heat, lime dust, and toxic chemicals.

10

Cleaning the distillation and alkalization area.

Manual and arduous works; static working posture, under the impact of heat, dust, and chemicals.

11

Pouring Na2SO4 to the recovery kiln.

Manual and arduous works; static working posture; in contact with chemicals.

12

Operating sewage treatment system.

Stinky workplace; under the impact of noise and chemicals (NaOH, H2SO4, H2S).

13

Operating grinding machines.

Arduous works; under the impact of excessive dust and noise.

14

Repairing, welding PVC pipes and derakene.

Static working posture; in contact with glass dust and toxic chemicals.

15

Operating hydraulic machines for pressing plywood.

Arduous works, restricted working position, under the impact of toxic chemicals

16

Cutting plywood.

Arduous works; under the impact of thick dust and loud noise.

17

Polishing plywood surface.

Arduous works; static working posture, under the impact of noise and dust.

18

Producing and applying phenolic adhesive

Constantly in contact with strong toxic chemicals.

19

Operating paper pulp crusher.

Under the impact of chemicals, noise and dust.

20

Producing additives and chemicals for paper production.

Constantly in contact with toxic chemicals.

No.

Occupation or work

Working conditions

Working conditions of class IV

1

Operating cotton feeders and carding machines.

Arduous works; under the impact of heat, noise, and dust.

2

Operating spinning line.

Standing to walking throughout the shift; under the impact of noise, heat, and dust.

3

Cleaning carding machines, thread production, weaving, and dying line.

Manual works; static working posture; under the impact of heat, dust, and grease.

4

Feeding thread to spinning machines

A lot of travel, monotonous and fast-paced works; under the impact of noise and dust.

5

Operating textile sizing machines.

Arduous and dangerous works; under the impact of heat and dust.

6

Operating weaving machines.

Static working posture; under the impact of heat, dust, and noise.

7

Operating cloth drying machines.

Arduous works; static working posture, under the impact of heat, noise and toxic chemicals.

8

Operating singeing machines, bleaching cloth with NaOH, Cl2.

Arduous works; static working posture, under the impact of toxic chemicals

9

Moving packages of cotton, cloth, rolls of threads, cloth, chemicals, and dye.

Manual and very arduous works; under the impact of dust.

10

Operating combined washing and dying machines.

Under the impact of heat, noise, and toxic chemical.

11

Operating cloth printers.

Under the impact of heat, noise, and toxic chemical.

12

Operating epilators.

Static working posture; under the impact of heat, noise, and very thick dust.

13

Dyeing, steaming yarn and synthetic fiber.

Under the impact of heat, bleaches, and dyes.

14

Manually weaving yarn.

Arduous and monotonous works; static working posture, under the impact of dust.

15

Washing jeans.

Under the impact of heat, dust, and toxic chemical.

16

Operating industrial sewing machines.

Static working posture; monotonous works which cause optical strain and stress.

17

Repairing thread rolling, weaving, and dying machines in the facility.

Static working posture; in contact with grease; under the impact of heat, dust, noise, and toxic chemicals.

18

Casting lead

Static working posture; under the impact of heat and lead gas.

19

Grinding paper rolls.

Static working posture; under the impact of noise and very thick dust.

No.

Occupation or work

Working conditions

Working conditions of class IV

1

Producing pharmaceutical products using strong inorganic acids, strong alkalis, alcohol, and pine oil.

Arduous works; constantly in contact with toxic chemicals, pine oil, and heat.

2

Raising snakes and taking snake venom.

Dangerous and stressful works in stinky and dirty environments.

3

Producing chloral and chloramines.

Under the impact of toxic chemicals such as Cl2, HCl, H2SO4.

4

Dissolving, condensing, collecting, rinsing, drying, crushing, sieving, and packing pharmaceutical products.

Arduous works, under the impact of heat, dust, and toxic chemicals.

5

Extracting and refining active ingredients from herbal ingredients.

Arduous works, under the impact of heat, dust, and toxic chemicals.

6

Stewing herbal glue and herbal glue.

Arduous works; constantly under the impact of heat.

7

Chopping, seasoning, drying, removing molds from herbal ingredients manually.

Arduous works; under the impact of heat, fungi and molds.

8

Crushing, sieving, mixing, producing drugs and excipients; operating drug packing machines.

Arduous works; under the impact of thick drug dust, heat, and noise.

9

Producing and packing balm and ointment.

Under the impact of vapor of essential oil which affect the mucous membrane, skin, and eyes.

10

Preparing, packing, sealing injectable drugs and powdered antibiotics.

Working in closed, hot and airless rooms.

11

Producing drugs from offal, subtilit.

Arduous works; in contact with toxic chemicals, heat, and pathogenic bacteria.

12

Operating thermal water distilling machines.

Arduous works; under the impact of heat.

13

Manually rinse syringes.

Arduous works; static working posture, under the impact of heat.

14

Extracting and experimentally producing pharmaceutical products.

Under the impact of toxic chemicals.

15

Manually loading materials, pharmaceutical ingredients, drugs.

Manual and arduous works; in contact with dust and toxic chemicals.

16

Directly testing pharmaceutical products and cosmetics.

Constantly in contact with toxic chemicals.

17

Keeping warehouses, preserving materials and poisonous pharmaceutical ingredients of class A and B.

Arduous works; in contact with toxic chemicals, heat and dust.

18

Cleaning medical equipment and pharmaceutical factories.

Manual and arduous works; in contact with chemicals and industrial waste.

No.

Occupation or work

Working conditions

Working conditions of class IV

1

Preparing coffee (drying, husking, sieving, polishing, bagging).

Arduous works; under the impact of heat, noise, and dust.

2

Roasting and crushing coffee.

Arduous works; under the impact of heat and coffee dust (which stimulate the nerves)

3

Dissolving lime during carbonization (in the production of cane sugar)

Arduous manual works; in contact with lime dust and lime (which corrode hand skin)

4

Manual production of seasoning.

Arduous works; under the impact of heat, CO, salt, pepper, onion, garlic (which stimulate mucous membrane in the respiratory tract).

5

Cleaning processing facilities.

Manual and arduous works; in contact with wastes.

6

Multiplying, preserving silkworm eggs in cold storage.

Working in cold environments; constantly in contact with moth pollen, formaldehyde, and HCl.

7

Raising silkworm

Manual works; in contact with silkworm excreta, formaldehyde, Bi58, CaCl2 (used for treating silkworm’s sickness).

8

Treating silk thread

Constantly under the impact of heat, high humidity, and the stink of silkworm caterpillars; the hands are constantly in contact with water that has decomposed protein which causes allergy and optical strain.

9

Softening silk thread and silk.

Under the impact of dust, toxic chemicals; optical strain.

10

Printing, bleaching, dying, and finishing silk.

Arduous works; constantly under the impact of heat, dyes, NaOH, oil (to soften silk thread).

11

Treating silk waste.

Manual works; constantly in contact with dust of waste, dyes, and the stink of decomposed protein.

12

Cleaning silk thread treating, silk weaving, and dying factories.

Manual works; constantly in contact with chemicals and industrial wastes.

13

Testing pesticides.

Working in dangerous environments; constantly in contact with hazardous such as: arsenic, toluene, acetone, Bi58, ester.

14

Investigating plant protection.

Working on the fields, in contact with pesticides.

15

Testing, classifying, and preserving seeds in closed rooms.

Under teh impact of heat and moisture, HCl, H2SO4, zinc dithiocarbonate, cacbary, vectroon.

16

Operating cashew nut sieving machines.

Arduous works; under the impact of heat and loud noise.

17

Operating cashew oil roasting machines.

Arduous works; constantly under the impact of heat and oil.

18

Manually peeling cashew nuts.

Manual works; static working posture; under the impact of dust.

19

Treating sewage with microorganisms in rubber latex treating factories.

Outdoor works; immersing and soaking in dirty water; in contact with toxic chemicals.

20

Operating PP and PE bag printers.

Constantly in contact with solvents.

No.

Occupation or work

Working conditions

Working conditions of class IV

1

Operating heavy equipment at irrigation sites.

Under the impact of tremor, noise, dust, and stress.

2

Repairing heavy equipment at construction sites.

Outdoor arduous works, in contact with oil and grease; static working posture.

3

Closing and opening sewer hatches at irrigation dams.

Working at a high in any weather; arduous works.

4

Testing, treating soil and concrete at irrigation construction sites.

Outdoor manual and arduous works; under the impact of chemicals, noise, tremor, and dust.

5

Inspecting dykes.

Outdoor works; a lot of travel regardless of day or night.

No.

Occupation or work

Working conditions

Working conditions of class IV

1

Basic survey in the midland and in the plain.

Arduous works; constantly in the forest or on islands.

2

Topography survey

Arduous works; constantly in the forest or on islands.

3

Cadastral survey.

Outdoor and arduous works; involving travel all over the country.

No.

Occupation or work

Working conditions

Working conditions of class IV

1

Selecting, classifying, preserving, fixing, restoring materials in meteorology and hydrographic archives

Constantly in contact with CO and formaldehyde.

2

Carrying out meteorological and hydrographical surveys in highlands and on islands.

Frequent works in highlands and remote islands, arduous and dangerous works.

3

Providing instructions and inspecting meteorological and hydrographical surveys in highlands and on islands.

Arduous works; constantly in the forest or on islands.

4

Observing the flow rate and hydrographical factors in highlands

Arduous and dangerous works.

5

Observing meteorological factors in the radar control room: Meteosit 2, AKB complex, weather radar.

Working in closed rooms, lacking light, under the impact of X-ray, ultra high-frequency waves, and noise.

6

Carrying out chemical analyses of soil, water, air, and microorganisms.

Constantly in contact with toxic chemicals.

No.

Occupation or work

Working conditions

Working conditions of class IV

1

Researching into materials for energy sources and environmental remediation.

In contact with toxic chemicals: lead powder, H2SO4, SO3, etc.

2

Researching into the production of composite materials, paint, plastic, rubber.

In contact with toxic chemicals and solvents: phenol, butanol, toluene, and acids.

3

Extracting bioactive compounds from animals and plants.

In contact with toxic inorganic solvents and chemicals: benzene, toluene, methanol.

4

Analyzing absolute dating of ore samples

In contact with toxic inorganic solvents and chemicals: HF, HCl, HNO3, benzene.

5

Observing electromagnetic radiation of the earth by radiation sources.

Outdoor works, under the impact of radiation.

6

Processing and making animal specimens (tanning, stuffing, etc.)

In contact with toxic chemicals: formaldehyde, Cr2O3, and compounds that contain arsenic.

7

Biochemistry and enzyme technology.

In contact with toxic inorganic solvents and chemicals: HgCl2, chloroform, toluene and excessive CO2.

8

Making specimens of invertebrates, insects, and parasites.

Excessive exposure to chemicals, alcohols, inorganic and organic acids, and phenol.

No.

Occupation or work

Working conditions

Working conditions of class IV

1

Operating offset printers, typo machines, paper cutters.

Constantly in contact with dust, noise, and toxic chemicals.

2

Mechanical and electrical repairs of power tools, printers, cutters, etc.

Static working posture; constantly in contact with noise, dust, toxic chemicals, and grease

3

Treating and fixing zinc plates.

Constantly in contact with toxic chemicals and UV ray.

4

Photographing and converting film into plate.

Working in closed rooms, lacking light, under the impact of toxic chemicals.

5

Electronic typesetting.

Working in closed rooms; under the impact of ionizing radiation.

6

Preparing and preserving chemicals.

Constantly in contact with toxic chemicals.

7

Operating, repairing, and maintaining film production equipment.

A lot of travel, under the impact of noise and toxic chemicals.

8

Setting up scenes and explosion effects.

A lot of travel; arduous works; in contact with toxic chemicals (gunpowder, etc.)

9

Setting up circus tents and exhibition houses.

Manual, arduous, dangerous works; involving a lot of travel.

10

Caring animals.

Arduous and dangerous works; constantly in contact with animal excreta, fungi, and pathogenic microorganisms.

11

Musicians in orchestras.

Stressful works; under the impact of loud noise and intense light.

12

Making puppets.

Constantly in contact with toxic chemicals such as gasoline, acetone, paint.

13

Keeping, preserving, and processing exhibits, documents, books, magazines, films, and pictures in warehouses of museums, libraries, and archives.

Constantly working in closed rooms; lacking oxygen; in contact with chemical, fungi, and molds.

14

Repairing, restoring documents and exhibits of museums, libraries, and archives.

Static working posture, under the impact of chemicals fungi, and molds.

15

Carving historical remains, sculpture.

Arduous and dangerous works; static working posture; involving a lot of travel

16

Propagating information in highlands and on islands.

Involving a lot of travel in forests, highlands, and on islands.

17

Photographic processing.

Working in closed rooms; lacking light and oxygen; in contact with toxic chemicals.

18

Traditional art performers, professional actors, actresses, and singers.

Stressful works; under the impact of heat, loud noise and intense light.

19

Guiding tourists in Ho Chi Minh Museum.

Involving a lot of travel and speaking; stressful.

No.

Occupation or work

Working conditions

Working conditions of class IV

1

Washing filters by ultrasound.

Under the impact of ultrasound, oil vapor, and heat.

2

charging batteries at the airport, ACC, APP.

Working in a hot, noisy environment, under the impact of acid vapor.

3

Preserving foods in cold storage.

Arduous works; working in closed rooms; under the impact of cold air.

4

Protect the runway, hangars, and radar stations.

Outdoor works; under the impact of noise and electromagnetic field.

5

Repairing specialized vehicles at the airport.

Arduous works, under the impact of noise, electromagnetic field, gasoline vapor, oil, and chemicals.

6

Collecting and arranging container at the airport.

Arduous works in a hot and very noisy environment.

7

Airplane sewing and woodworking.

Arduous works; under the impact of heat, noise, and dust.

8

Operating and repairing fire extinguisher chargers.

Working in a hot, noisy environment, under the impact of CO2.

9

Fire fighters at the airport.

Under the impact of noise and electromagnetic field.

10

Keeping and preserving chemicals.

Arduous works; under the impact of toxic chemicals, noise and dust.

11

Delivering and receiving goods at the warehouse.

Arduous works; under the impact of heat, noise, and noxious gases.

12

Guiding airplanes to the stands.

Outdoor and stressful works in a hot and noisy environment.

13

Operating and making announcements at the airport.

Under the impact of electromagnetic field; stressful.

14

Operating luggage scanners and security scanners.

Under the impact of radiation and electromagnetic field.

15

Computer programming and repairing.

Under the impact of ionizing radiation; stressful.

16

Operating, repairing measuring and calibrating equipment.

Under the impact heat, noise, and electromagnetic field.

17

Monitoring radars, AMSS, AFTN.

Under the impact of electromagnetic waves; stressful.

18

Receiving, dispensing, operating, charging, testing aviation oil and gas.

Arduous works; in contact with gasoline, heat, and noise.

19

Protecting, repairing, cleaning oil/gas pipes, depots, or reservoirs.

Arduous works; in contact with gasoline and oil.

20

Keeping aviation oil/gas depots.

Arduous works; in contact with gasoline and oil.

21

Building, maintaining the terminal, runway, and hangars.

Outdoor arduous works; under the impact of noise and dust.

22

Operating plastic pressing machines, blowing, printing, cutting polymer, sucking PVC membrane, screen-printing.

Arduous works; in contact with toxic chemicals, heat, dust, and noise.

23

Cooking foods for passengers.

Manual and arduous works; under the impact of heat.

24

Operating building equipment at the terminal or airport.

Arduous works; constantly in contact with dust and noise.

25

Airplane mechanics.

Arduous works in a noisy environment; static working posture.

26

Annealing airplane parts.

Arduous works; under the impact of heat and noise.

27

Repairing, maintaining iron and steel structure at the airport.

Outdoor, manual, and arduous works in a noisy environment; in contact with electromagnetic field.

28

Loading goods and luggage at the entrepot and warehouse.

Arduous works; under the impact of heat and noise.

29

Driving refueling trucks.

Arduous works, under the impact of noise, electromagnetic field, and toxic vapor from gasoline and oil.

30

Driving airport shuttles at aircraft stands.

Under the impact of heat, noise; stressful.

31

Analyzing and measuring chemicals.

Constantly in contact with to toxic chemicals.

32

Cleaning the runway, hangars, car parking lot, and radar stations.

Outdoor arduous works; under the impact of dust and noise.

33

Supervising ground and air services at the hangar.

Involving a lot of travel, under the impact of noise and electromagnetic field.

34

Washing dishes and food containers.

Static working posture; arduous works in a damp environment.

35

Repairing electricity and water supply at the airport.

Arduous works; under the impact of noise and electromagnetic field.

36

Operating, maintaining and equipment of ACC, APP centers.

Under the impact of noise and electromagnetic field.

37

Installing, maintaining, repairing aviation antennae at a height of below 50m.

Outdoor, manual and arduous works; static working posture; under the impact of dust and paint solvents.

38

Aviation meteorology observation.

Under the impact of noise and electromagnetic field.

39

Cleaning the aircraft, spraying anti-contagion and pesticides on the aircraft.

Arduous works; under the impact of toxic chemicals, noise and electromagnetic field.

40

Cleaning the aircraft; treating waste; washing and fitting carpets on the aircraft.

Arduous works; static working posture; in contact with dust and pathogenic microorganisms.

41

Operating, repairing, and maintaining UHF communication machines from 30 to below 300 MHz

Under the impact heat, noise, and electromagnetic field.

42

Installing receivers and transmitters.

Outdoor works; under the impact of electromagnetic field; static working posture.

43

Operating specialized vehicles at the airport.

Working in a hot, noisy environment; in contact with electromagnetic field.

No.

Occupation or work

Working conditions

Working conditions of class IV

1

Raising oysters for pearls.

Outdoor arduous works; constantly soaking in water.

No.

Occupation or work

Working conditions

Working conditions of class IV

1

Manual production of table salt.

Outdoor, manual, and very arduous works.

2

Manual and semi-manual loading, mixing, and packaging of iodized salt.

Manual and arduous works in humid environments; static working posture.

3

Workers in factories that produce chemicals (MgCO3, MgCl2, MgSO4).

Manual works; under the impact of heat, moisture, and chemicals such as alkalis, Cl2, NaCO3.