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Asbestos situation in Thailand. Pornpimol Kongtip. Asbestos has been imported to Thailand for more than 30 years; 90% of asbestos are used in cement manufacturing products such as roof tile and cement pipe, 8% in brake and clutch and the rest in vinyl floor

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Presentation Transcript
slide2

Asbestos has been imported to Thailand for more

than 30 years; 90% of asbestos are used in cement

manufacturing products such as roof tile and cement

pipe, 8% in brake and clutch and the rest in vinyl floor

tile, gasket, heat insulating material.

There were approximately 1710 workers in 17

factories manufacturing materials containing asbestos.

slide3

Imported Chrysotile in Thailand

Ton (1000 Kg)

(Jan-Oct)

Year

slide4

Law and regulation related to asbestos

Ministry of Industry

Hazardous substance Act B.E. 2535

Divided asbestos into 2 groups

1. Chrysotile, hazardous substance type 3,

are allowed to import, produce, export or

possess.

2.Crocidolite and amosite, hazardous

substance type 4, are not allowed to import, produce,

export or possess.

The permit for chrysotile need to control for quantity,

production and storage location and transportation.

slide5

The factories shall have dust control measure, safe

handling and use measures, personal protective

equipment, material safety data sheet and workers’

health examination.

Working environment dust level shall be less than

1 fiber/cm3.

Notification of the Ministry of Interior:

Working Safety in Respect to Environmental

Condition(Chemical) B.E. 2520

The average concentration of asbestos / tremolite

in the workplace shall not exceed 5 fibers/cm3.

slide6

Asbestos related diseases in Thailand

  • Asbestos related diseases have never been reported
  • in Thailand. Only 13 pleural thickening cases out of 701
  • workers were reported from a survey conducted in
  • 24 factories by the division of occupational Health,
  • Ministry of Public Health, in 1987.
  • It is probably because of several reasons:
  • Lack of specialist in diagnosis of asbestos related

diseases

  • Lack of system in managing workers’ history
  • Long incubation period before developing diseases
  • Lack of effective health surveillance program
slide7

Some research projects were carried out related to

Asbestos In Thailand.

  • Bureau of Occupational and environmental Diseases,
  • Ministry of Public Health, conducted survey in 20
  • factories during 1987-1988.
  • National Institute for Improvement of Working
  • Conditions and Environment (NICE) conducted survey
  • in 11 factories during 1999-2000.
  • Department of Industrial Works, Ministry of Industry,
  • conducted survey in factories in 2001.
slide8

Asbestos in working environment, mean  SD, Range, by the

division of Occupational Health, Ministry of Public Health.

slide9

Asbestos in working environment by the National

Institute for Improvement of Working Conditions

and Environment (NICE), Ministry of Labour

in 11 factories during 1999-2000.

slide10

Asbestos in working environment conducted by

Department of Industrial Works, Ministry of

Industry, in 2001.

slide11

Department of Occupational Health and Safety,

Faculty of Public Health, Mahidol University,

conducted research to reduce asbestos exposure

in 4 roof tile manufacturing industries in 2002

and studied the risk of participants developing cancer

in 60 office buildings and 76 homes using asbestos-

containing materials.

slide12

Asbestos in Working Environment during

Transportationof Asbestos from Container to Silo

Note * P = personal sampling, A = Area sampling

slide13

Asbestos in Working Environment during roof tile

manufacturing process in 4 factories in 2002

* P = personal sampling, A = Area sampling

slide14

Risk of Participants developing cancer from materials

containing asbestos in 60 office buildings and 76 homes

The risk of participants developing cancer

from working in office building using materials

containing asbestos was 2.40 x 10-5.

The risk of participants developing cancer

in homes using materials containing asbestos

was 2.10 x 10-4.

The risk of participants developing cancer from working

in office building and staying in homes using materials

containing asbestos was 8.83 x 10-4.

slide15

Conclusion

The highest risk group was workers in brake lining

and pad industries who exposed to high level of

chrysotile. The safety operation procedure and

effective surveillance program should be set up and

implemented in these types of small-sized industries

toreduce exposure.

If buildings using materials containing asbestos get

older, the asbestos concentration in air will be increased,

the risk of participants developing cancerwill also increase, and we will realize the toxicity of asbestos.