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Development of National Program for
Elimination of Asbestos-Related
Diseases in the Russian Federation.



                  E. Kovalevskiy
                  Institute of Occupational Health,
                  Russian Academy of Medical Sciences,
                  Moscow, Russia
“

    ”
Being thoroughly examined the text of
“Outline…” seems to consist of two different
    parts getting capriciously mixed up.
          It could be divided into:

perfectly     formulated
plan of real consequent
measures on prepare of     collection of political
national      preventive   appeals for chrysotile
programs aimed on          banning
elimination of asbestos
related diseases
The Russian Federation do not accept
the political part of the document whereas
its technical part including data collection,
preparation of the national profile and
other issues, is in sphere of it’s interest.
Russia is largest asbestos producer and
consumer in the world.
                        from 1886




   to 2009
In Russia only chrysotile is produced and used
in civil industry.
Simeon Bogoslovskiy was the first Russian
hygienist and medical statistician who paid
attention to asbestos hazards. At the 10th
N.Pirogov’s Congress of Russian physicians
that was held in Moscow in 1907, Dr.
S.Bogoslovskiy made a report “To the
Classification of Jobs” where he mentioned
the main harmful factors of asbestos deposits
which workers had to undergo at that time. He
also wrote a monograph entitled “System of
Occupational Classification” published in
1913 containing data on health effects due to
exposure to asbestos.
During last decades dustiness levels             were
considerably reduced due to many reasons:

-strengthening of regulations concerning environment
protection and implement of severe economic
measures;

-implement of sufficient financial compensation, which
industrial authorities must pay for every case of
asbestos-related occupational disease;

-development and implementation of different hygienic
and technological measures for reduction of dust
contamination of environment and working zone air.
10000                                               Maximum production of asbestos - 1974,7
                                                                   thousand tons
                          3
     1000     290,0 mg/m


       100
                 29,3%
                                                         3
                                        Dust level, mg/m
        10


         1
         1936    1950     1955   1960   1965   1970
        0,1                                            1975   1980
Asbestosis morbidity, %                                               1985    1990   1995    2000
                                        Asbestosis less 1%
       0,01


                                                                                                    С областями
180                                                                                                                                                     8




                                                                                                                      alignant
      164,1




                                                                                                                                          esothelioma
                                                                        7,1
160                                                                                                                                                     7




                                                                                                         orbidity of m
140                                                             5,9
                                                                                                                                                        6




                                                                                                                                 pleural m
                                                           *
                                                                                5,1
120
                                                                                                                                                        5




                                                                                                        M
100
                                 Dust level, mg/m3
                                                                                                                                                        4
 80                              Morbidity of malignant pleural mesothelioma
                                                                                                                                                        3
                   g/m3




 60
                                                                                        1,7     1,7
       ust level, m




                                                                                                                                                        2
 40
                          25,8
                                    15,2                                                                                                                1
 20                                         9,8
                                                     5,1        4,6     3,5     4       5,3     4,2                  4
                                                                                                                     0
      D




 0                                                                                                                                                      0
      1951-               1956-    1961-   1966-   1971-       1976-   1981-   1986-   1991-   1996-   2001-
       55                  60       65      70      75          80      85      90      95      00      04
Our data were confirmed by results of Russian-Finnish-
American research project          “Health and exposure
surveillance of Siberian asbestos miners”.

This project was realized in 1995-97 at world's largest
chrysotile asbestos mining and milling complex “Uralasbest”
(Asbest, Russia) - is working out since 1889 and produces
now about 25% of total world chrysotile production; at
different periods more than 10 000 workers were employed.
Age, smoking habit and work years of chrysotile
      miners and millers (mean, range)
                     Men      Women      Total
                    n=1130    n=510     n=1640
Age, years            46.4      49.7      47.4
                    (28-75)   (27-78)   (27-78)
Smoking years        18.3       0.7      12.8
                    (0-58)    (0-30)    (0-58)
Years of             22.8      21.5      22.4
employment          (3-49)    (1-47)    (1-49)
Years since first    24.5      27.5      25.4
exposure            (5-57)    (1-59)    (1-59)
Men                    Women
X-ray
              Malignant neoplasms of Malignant neoplasms of
parenchymal
                respiratory system      respiratory system
changes
                             Mortality               Mortality
in 1996        Yes     No              Yes     No
                                rate                    rate
No             11     1061    0.010      1     482     0.002
Yes             3      39     0.071      0     15      0.000
Men                    Women
X-ray pleural   Malignant neoplasms of Malignant neoplasms of
changes in        respiratory system      respiratory system
1996                           Mortality               Mortality
                 Yes     No              Yes     No
                                 rate                     rate
No                11    1040 0.010        1      477     0.002
Yes               3      60     0.048     0      20      0.000
X-ray                Men                       Women
parenchymal Malignant neoplasms of     Malignant neoplasms of
and pleural   respiratory system         respiratory system
changes in                 Mortality                  Mortality
            Yes     No                 Yes     No
1996                         rate                      rate
No             9    1009    0.009       1      466     0.002
Yes            5     91     0.052       0      31      0.000
All causes          All malignant neoplasms
   Age
              Smokers     Non-smokers   Smokers     Non-smokers

   30-39       0.0±79.3    0.0±100.0    0.0±79.3      0.0±100.0
   40-49       15.7±2.7     5.1±2.9*     2.2±1.1       1.7±1.7
   50-59       12.3±1.6     4.6±2.0*     2.3±0.7       3.7±1.8
   60-69       20.0±2.9    22.9±5.1      6.2±1.7       1.4±1.4*
   70-79       21.9±5.2    18.2±6.8      4.7±2.7       6.1±4.2
80 and more   50.0±50.0    0.0±100.0    50.0±50.0     0.0±100.0
    Total      15.6±1.3    11.1±1.9*     3.5±0.6       3.0±1.0
Including malignant
         Malignant neoplasms of                           Malignant neoplasms
                                  neoplasms of trachea,
           respiratory system                              of digestive system
 Age                                bronchi and lungs
                       Non-                    Non-                    Non-
         Smokers                  Smokers                 Smokers
                      smokers                 smokers                 smokers
30-39    0.0±79.3    0.0±100.0    0.0±79.3   0.0±100.0    0.0±79.3    0.0±100.0
40-49     1.1±0.8      0.0±6.1    1.1±0.8     0.0±6.1      1.1±0.8     1.7±1.7
50-59     0.8±0.4      0.0±3.4    0.8±0.4     0.0±3.4      0.5±0.4     2.8±1.6
60-69     3.6±1.3      0.0±5.2    3.1±1.2     0.0±5.2      1.5±0.9     1.4±1.4
70-79     0.0±5.7      3.1±3.1    0.0±5.7     6.1±4.2      3.1±2.2    0.0±10.4
80 and
 more    0.0±65.8    0.0±100.0    0.0±65.8   0.0±65.8     50.0±50.0   0.0±100.0
Total     1.4±0.4     0.2±0.3*    1.3±0.4     0.7±0.5      1.2±0.4     1.8±0.8
In 2009 basic legislative documents and
regulations for safety in use of asbestos has
been revised and completed according to
national      and   international    experience
concerning harmful effects of different types of
industrial fibres.

Existing threshold levels and control methods
for dusts containing asbestos and other
mineral fibres measurement in the air and
wastes have been reevaluated and improved
too.
Chrysotile containing materials allowed for
use in the Russian Federation according to:
-2.1.2/2.2.1.1009–00 State Standard
”List    of    asbestos-cement     products
recommended for use”;
-Letter no. 1100/3232-1-110 of Chief
Hygienist of the Russian Federation from
9.11.2001
“Asbestos products recommended for
production      and   use    at   transport,
equipment, industrial and common life
commodities”.
Basic positions of legislative documents in Russian
Federation are:

•use of amphiboles is banned;

•chrysotile can be used, but in controlled conditions;

•spraying of chrysotile-contained insulation is
banned;

•works with friable chrysotile containing materials and
works on removing (demolishing) of old materials
containing synthetic fibres can be provided only by
licensed contractors under control of independent
laboratory;
•works with other types of asbestos containing
materials should be provided under control and
accompanied by safety measures (dust emission
prevention);

•owners of industrial and nonindustrial objects where
friable insulation products containing asbestos and
other industrial mineral fibres exist should get all
information about amount and localization of products
or construction elements and are responsible for
safety measures organization;
•free of charge obligatory special medical
examinations for workers before, during (and after if
necessary) occupational contact with asbestos
containing dust;

•asbestos related diseases (asbestosis, chronical
bronchitis, upper airways cancers, lung cancer,
malignant mesothelioma) are in official list of
occupational      diseases     and     compensated
automatically if occupational contact with chrysotile
containing dust is proved;
•thresholds for working zone air according to GN
2.2.5.1313-03 are established in total dust indices
(mg/m3) separately for 8 hours shift and for 30
minutes maximum (values are depended on
respirable chrysotile fibres concentrations);

•threshold for ambient air according to GN
2.1.6.1338-03 established in respirable fibers (f/ml)
measured by optical microscopy and is 0,06 f/ml.
To provide detailed planning and
successful   realization   of     practical
measures we offer first of all to conduct
work     for  informational     resources
mobilization – the development of
national asbestos profile.
In 2009 preparation of National Asbestos
Profile as a base for further successful
planning and realization of practical
measures has begun.

First of all evaluation of main sources of
exposure should be completed (including
occupational        and      environmental
exposure).
Sufficient work should be done on estimation of:
- total number of persons exposed from occupational, non
occupational and environmental sources;
- preparation of formal register of industries where exposure
exists and industries with largest numbers of workers potentially
exposed;
- register of industries with high risk of exposure and estimated
total number of workers at high risk.
Another important task is mapping of:
- existing and closed at present enterprises produced and
  extensively used asbestos containing materials;
- deposits of all types of asbestos (ever operated and never
  operated);
- deposits of erionite, vermiculite, talc and other natural fibrous
  minerals.
Situation at different enterprises could be different:




to inappropriate
The content of these registers must include
information on exposure levels typical for
every professional and nonprofessional
group and industry brunch in order to avoid
as under-, as overrate the asbestos related
diseases risks.

We’ve got a lot of information for many
industries, but for some of them (ship building
and      maintenance,     chemical     industry,
metallurgy, several areas in construction
industry, etc.) we or have not enough.
Series of studies were performed to estimate
the concentrations of respirable fibres in
indoor and outdoor air at buildings where
asbestos and other fibres containing
construction materials were used.

The aim of this studies was to evaluate a
potential sources of exposure to asbestos and
other fibrous particles.
One of the surveys included twenty buildings in Moscow:

1. Fourteen residential houses
    - three 5-storey panel buildings from the 1960's,
    - four 12-storey panel buildings from the 1970's,
    - three 16-storey panel buildings from the 1980's,
    - three high-rise brick buildings from the 1950's
    - and one 9-storey panel building from the 1970's

2. Six public buildings
    - hospital,
    - covered stadium,
    - theatre
    - and three office buildings
All the buildings contained asbestos materials, most often
asbestos cement panels and pipes in dwelling areas or thermal
insulations usually contained asbestos and synthetic vitreous
fibres in heating rooms at the basement.
fibre concentrations in hospital building air

                     0,025
                                 0,022
                                                         0,02
                      0,02



                     0,015
Concentration f/ml                                                              0,011

                      0,01



                     0,005

                                         <0,001                 < 0,001                 <0,001
                        0
                                  Corridor             Elevator hall      Street near entrance of
                                                                                  building


                             All fibers longer 5 mkm (optical microscopy)
                             Chrysotile fibers longer 5 mkm (electron microscopy)
Fiber concentrations in living
                                buildings
Concentration (f/ml)

                       0,09
                       0,08
                       0,07
                       0,06
                       0,05
                       0,04
                       0,03
                       0,02
                       0,01
                         0
                              5-storeys block    16-storeys panel   9-stores panel building
                                 buildings          buildings        (renov ation of water
                                                                        supply sistem)

         All fibers longer 5 mkm (PCOM)
         Organic fibers longer 5 mkm (SEM)
         Chrysotile asbestos fibers longer 5 mkm (SEM)
         Other inorganic fibers longer 5 mkm (SEM)
Fibre concentrations were measured also at five
locations near Moscow motorways (North, East,
South, West and Center).

A series of measurements were made near a thermal
power plant where large quantities of asbestos and
MMMF insulations were removed, repaired and
installed.
fibres concentrations in the air of Moscow motorways
                        0,009

                        0,008

                        0,007

                        0,006

                        0,005
 Concentration (f/ml)
                        0,004

                        0,003

                        0,002

                        0,001

                           0
                                North       East       South       West       Center     Center (near
                                                                                           thermal
                                                                                            power
                                                                                           station)

                           Phase-contrast optical microscopy (all fibers longer 5 mkm)
                           Electron microscopy (chrysotile fibers longer 1 mkm)
                           Electron microscopy (chrysotile fibers longer 5 mkm)
                           Electron microscopy (chrysotile fibers < 5 mkm)


In summertime samples, low concentrations of all fibres (> 5µm)
and chrysotile (>1 µm) were found at five locations near Moscow
motorways. The mean concentrations were 0,002 f/ml and below
0,001 f/ml, respectively.
In general, the results of this study in Moscow are consistent
with measurements of nonoccupational exposure to fibrous
particles in other urban areas in Russia.

General conclusions were:
- asbestos cement materials and other asbestos containing
construction materials when used with ordinary precautions
without intensive destruction can not be recognized as sufficient
source of ambient air contamination by asbestos fibres;
- uncontrolled demolition and repair of friable asbestos and
MMMF materials can be an important source of occupational
and nonoccupational exposure to mineral fibres.
Crocidolite                Rodusite




              Anthophyllite



              Actinolite
Despite the fact that amphiboles never have
been used in Russia in civil industry, certain
amounts of crocidolite and anthophylite was
mined and used for special non-civil purposes.
Exposure to amphiboles is possible due to:
- erosion of soils in areas, surrounded their
deposits (even never being processed),
- in shipbuilding industry during maintenance
works at old ships built in countries, where
amosite and crocidolite were widely used in
insulation products.

This is the one of fields for priority actions.
Insulation materials contained chrysotile and amosite
           removed during ship renovation
Former crocidolite mine:
Former anthophyllite mine:
Especially should be stressed necessity of
series of epidemiological studies to define
risk of carcinogenic effects due to
occupational     and     non-occupational
exposure to chrysotile asbestos in modern
conditions.
«…The risk estimates used in the
calculations … were derived from
past exposures to relatively high
levels of chrysotile. Current levels
of exposure are much lower …
and as such risk extrapolations
may be an overestimate. There
are several other reasons why
there is a great deal of uncertainty
regarding these risk estimates…»
Further work and selection of priority directions
of actions will be possible only after realization
of fundamental for further activities phase –
preparatory phase according to ILO/WHO
“Outline for the Development of National
Programmes for Elimination of Asbestos
Related Diseases”.
The issue of banning chrysotile or restricting it in international
trade has been repeatedly raised by both national and
international organisations although scientific evidence of
impossibility of its safe and responsible use has never been
provided.

Moreover, the question about banning chrysotile is usually
raised by the countries where pure chrysotile free of more
hazardous and justly prohibited amphibole asbestos fibres has
never been used.

So evaluation of existing scientific        data   published    in
international sources were made.
Chrysotile versus amphiboles
    (why it is impossible to use most of
European and US epidemiological studies to
access risks related to chrysotile exposure)
Oldershaw P., 2004
less
… Most chrysotile fibres
disappear from the lung within
a year, and a limited period of
chrysotile exposure causes very
few mesotheliomas in workers
with no other exposure.
… observations suggest that
chrysotile     exposure     could
increase        the      lifelong
mesothelioma risk in those
whose         lungs      contain
persistent       amosite       or
crocidolite, just as it causes a
much larger increase in the lung
cancer risk in lifelong smokers
than in non-smokers (Hammond
et al., 1979b) …
…       The     effect    on
mesothelioma       risk    of
stopping asbestos exposure
is much less marked than
that of stopping smoking on
lung cancer risk (Peto et al.,
2000), perhaps because
amphibole fibres persist in
the lung for many decades
after      exposure      has
ceased, so even brief
exposure      produces      a
lifelong       carcinogenic
stimulus ...
«...Cohort studies of populations of workers
using only or predominantly chrysotile-
containing products in applications such as
construction have not been identified.
Some relevant information is available,
however, from population-based analyses
of primarily mesothelioma in application
workers exposed generally to mixed fibre
types…”
      Environmental Health Criteria 203 − Chrysotile Asbestos (IPCS-1998)
“…It should be recognized that although the
epidemiological studies of chrysotile-
exposed workers have been primarily
limited to the mining and milling, and
manufacturing sector, there is evidence,
based on the historical pattern of disease
associated with exposure to mixed fibre
types in western countries, that risks are
likely to be greater among workers in
construction and possibly other user
industries…”
      Environmental Health Criteria 203 − Chrysotile Asbestos (IPCS-1998)
4. …substitutes may be used in a variety
of applications with different exposure
potential, either alone or in combination
with other substances, the workshop did
not embark on risk assessment, but
rather, limited its work to assessing the
hazard...
7. …A completely inert fibre that could
be used as a negative control in the …
assays has not been identified…
STF - Audiência Pública do Amianto - 31/08/2012 - Supremo Tribunal Federal
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STF - Audiência Pública do Amianto - 31/08/2012 - Supremo Tribunal Federal
STF - Audiência Pública do Amianto - 31/08/2012 - Supremo Tribunal Federal
STF - Audiência Pública do Amianto - 31/08/2012 - Supremo Tribunal Federal
STF - Audiência Pública do Amianto - 31/08/2012 - Supremo Tribunal Federal

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  • 1. Development of National Program for Elimination of Asbestos-Related Diseases in the Russian Federation. E. Kovalevskiy Institute of Occupational Health, Russian Academy of Medical Sciences, Moscow, Russia
  • 2.
  • 3.
  • 4.
  • 5. Being thoroughly examined the text of “Outline…” seems to consist of two different parts getting capriciously mixed up. It could be divided into: perfectly formulated plan of real consequent measures on prepare of collection of political national preventive appeals for chrysotile programs aimed on banning elimination of asbestos related diseases
  • 6. The Russian Federation do not accept the political part of the document whereas its technical part including data collection, preparation of the national profile and other issues, is in sphere of it’s interest.
  • 7. Russia is largest asbestos producer and consumer in the world. from 1886 to 2009
  • 8. In Russia only chrysotile is produced and used in civil industry.
  • 9.
  • 10.
  • 11.
  • 12. Simeon Bogoslovskiy was the first Russian hygienist and medical statistician who paid attention to asbestos hazards. At the 10th N.Pirogov’s Congress of Russian physicians that was held in Moscow in 1907, Dr. S.Bogoslovskiy made a report “To the Classification of Jobs” where he mentioned the main harmful factors of asbestos deposits which workers had to undergo at that time. He also wrote a monograph entitled “System of Occupational Classification” published in 1913 containing data on health effects due to exposure to asbestos.
  • 13.
  • 14. During last decades dustiness levels were considerably reduced due to many reasons: -strengthening of regulations concerning environment protection and implement of severe economic measures; -implement of sufficient financial compensation, which industrial authorities must pay for every case of asbestos-related occupational disease; -development and implementation of different hygienic and technological measures for reduction of dust contamination of environment and working zone air.
  • 15. 10000 Maximum production of asbestos - 1974,7 thousand tons 3 1000 290,0 mg/m 100 29,3% 3 Dust level, mg/m 10 1 1936 1950 1955 1960 1965 1970 0,1 1975 1980 Asbestosis morbidity, % 1985 1990 1995 2000 Asbestosis less 1% 0,01 С областями
  • 16. 180 8 alignant 164,1 esothelioma 7,1 160 7 orbidity of m 140 5,9 6 pleural m * 5,1 120 5 M 100 Dust level, mg/m3 4 80 Morbidity of malignant pleural mesothelioma 3 g/m3 60 1,7 1,7 ust level, m 2 40 25,8 15,2 1 20 9,8 5,1 4,6 3,5 4 5,3 4,2 4 0 D 0 0 1951- 1956- 1961- 1966- 1971- 1976- 1981- 1986- 1991- 1996- 2001- 55 60 65 70 75 80 85 90 95 00 04
  • 17. Our data were confirmed by results of Russian-Finnish- American research project “Health and exposure surveillance of Siberian asbestos miners”. This project was realized in 1995-97 at world's largest chrysotile asbestos mining and milling complex “Uralasbest” (Asbest, Russia) - is working out since 1889 and produces now about 25% of total world chrysotile production; at different periods more than 10 000 workers were employed.
  • 18.
  • 19.
  • 20. Age, smoking habit and work years of chrysotile miners and millers (mean, range) Men Women Total n=1130 n=510 n=1640 Age, years 46.4 49.7 47.4 (28-75) (27-78) (27-78) Smoking years 18.3 0.7 12.8 (0-58) (0-30) (0-58) Years of 22.8 21.5 22.4 employment (3-49) (1-47) (1-49) Years since first 24.5 27.5 25.4 exposure (5-57) (1-59) (1-59)
  • 21.
  • 22.
  • 23.
  • 24.
  • 25. Men Women X-ray Malignant neoplasms of Malignant neoplasms of parenchymal respiratory system respiratory system changes Mortality Mortality in 1996 Yes No Yes No rate rate No 11 1061 0.010 1 482 0.002 Yes 3 39 0.071 0 15 0.000
  • 26. Men Women X-ray pleural Malignant neoplasms of Malignant neoplasms of changes in respiratory system respiratory system 1996 Mortality Mortality Yes No Yes No rate rate No 11 1040 0.010 1 477 0.002 Yes 3 60 0.048 0 20 0.000
  • 27. X-ray Men Women parenchymal Malignant neoplasms of Malignant neoplasms of and pleural respiratory system respiratory system changes in Mortality Mortality Yes No Yes No 1996 rate rate No 9 1009 0.009 1 466 0.002 Yes 5 91 0.052 0 31 0.000
  • 28. All causes All malignant neoplasms Age Smokers Non-smokers Smokers Non-smokers 30-39 0.0±79.3 0.0±100.0 0.0±79.3 0.0±100.0 40-49 15.7±2.7 5.1±2.9* 2.2±1.1 1.7±1.7 50-59 12.3±1.6 4.6±2.0* 2.3±0.7 3.7±1.8 60-69 20.0±2.9 22.9±5.1 6.2±1.7 1.4±1.4* 70-79 21.9±5.2 18.2±6.8 4.7±2.7 6.1±4.2 80 and more 50.0±50.0 0.0±100.0 50.0±50.0 0.0±100.0 Total 15.6±1.3 11.1±1.9* 3.5±0.6 3.0±1.0
  • 29. Including malignant Malignant neoplasms of Malignant neoplasms neoplasms of trachea, respiratory system of digestive system Age bronchi and lungs Non- Non- Non- Smokers Smokers Smokers smokers smokers smokers 30-39 0.0±79.3 0.0±100.0 0.0±79.3 0.0±100.0 0.0±79.3 0.0±100.0 40-49 1.1±0.8 0.0±6.1 1.1±0.8 0.0±6.1 1.1±0.8 1.7±1.7 50-59 0.8±0.4 0.0±3.4 0.8±0.4 0.0±3.4 0.5±0.4 2.8±1.6 60-69 3.6±1.3 0.0±5.2 3.1±1.2 0.0±5.2 1.5±0.9 1.4±1.4 70-79 0.0±5.7 3.1±3.1 0.0±5.7 6.1±4.2 3.1±2.2 0.0±10.4 80 and more 0.0±65.8 0.0±100.0 0.0±65.8 0.0±65.8 50.0±50.0 0.0±100.0 Total 1.4±0.4 0.2±0.3* 1.3±0.4 0.7±0.5 1.2±0.4 1.8±0.8
  • 30. In 2009 basic legislative documents and regulations for safety in use of asbestos has been revised and completed according to national and international experience concerning harmful effects of different types of industrial fibres. Existing threshold levels and control methods for dusts containing asbestos and other mineral fibres measurement in the air and wastes have been reevaluated and improved too.
  • 31. Chrysotile containing materials allowed for use in the Russian Federation according to: -2.1.2/2.2.1.1009–00 State Standard ”List of asbestos-cement products recommended for use”; -Letter no. 1100/3232-1-110 of Chief Hygienist of the Russian Federation from 9.11.2001 “Asbestos products recommended for production and use at transport, equipment, industrial and common life commodities”.
  • 32.
  • 33. Basic positions of legislative documents in Russian Federation are: •use of amphiboles is banned; •chrysotile can be used, but in controlled conditions; •spraying of chrysotile-contained insulation is banned; •works with friable chrysotile containing materials and works on removing (demolishing) of old materials containing synthetic fibres can be provided only by licensed contractors under control of independent laboratory;
  • 34. •works with other types of asbestos containing materials should be provided under control and accompanied by safety measures (dust emission prevention); •owners of industrial and nonindustrial objects where friable insulation products containing asbestos and other industrial mineral fibres exist should get all information about amount and localization of products or construction elements and are responsible for safety measures organization;
  • 35. •free of charge obligatory special medical examinations for workers before, during (and after if necessary) occupational contact with asbestos containing dust; •asbestos related diseases (asbestosis, chronical bronchitis, upper airways cancers, lung cancer, malignant mesothelioma) are in official list of occupational diseases and compensated automatically if occupational contact with chrysotile containing dust is proved;
  • 36. •thresholds for working zone air according to GN 2.2.5.1313-03 are established in total dust indices (mg/m3) separately for 8 hours shift and for 30 minutes maximum (values are depended on respirable chrysotile fibres concentrations); •threshold for ambient air according to GN 2.1.6.1338-03 established in respirable fibers (f/ml) measured by optical microscopy and is 0,06 f/ml.
  • 37. To provide detailed planning and successful realization of practical measures we offer first of all to conduct work for informational resources mobilization – the development of national asbestos profile.
  • 38. In 2009 preparation of National Asbestos Profile as a base for further successful planning and realization of practical measures has begun. First of all evaluation of main sources of exposure should be completed (including occupational and environmental exposure).
  • 39. Sufficient work should be done on estimation of: - total number of persons exposed from occupational, non occupational and environmental sources; - preparation of formal register of industries where exposure exists and industries with largest numbers of workers potentially exposed; - register of industries with high risk of exposure and estimated total number of workers at high risk. Another important task is mapping of: - existing and closed at present enterprises produced and extensively used asbestos containing materials; - deposits of all types of asbestos (ever operated and never operated); - deposits of erionite, vermiculite, talc and other natural fibrous minerals.
  • 40. Situation at different enterprises could be different: to inappropriate
  • 41. The content of these registers must include information on exposure levels typical for every professional and nonprofessional group and industry brunch in order to avoid as under-, as overrate the asbestos related diseases risks. We’ve got a lot of information for many industries, but for some of them (ship building and maintenance, chemical industry, metallurgy, several areas in construction industry, etc.) we or have not enough.
  • 42. Series of studies were performed to estimate the concentrations of respirable fibres in indoor and outdoor air at buildings where asbestos and other fibres containing construction materials were used. The aim of this studies was to evaluate a potential sources of exposure to asbestos and other fibrous particles.
  • 43. One of the surveys included twenty buildings in Moscow: 1. Fourteen residential houses - three 5-storey panel buildings from the 1960's, - four 12-storey panel buildings from the 1970's, - three 16-storey panel buildings from the 1980's, - three high-rise brick buildings from the 1950's - and one 9-storey panel building from the 1970's 2. Six public buildings - hospital, - covered stadium, - theatre - and three office buildings
  • 44. All the buildings contained asbestos materials, most often asbestos cement panels and pipes in dwelling areas or thermal insulations usually contained asbestos and synthetic vitreous fibres in heating rooms at the basement.
  • 45. fibre concentrations in hospital building air 0,025 0,022 0,02 0,02 0,015 Concentration f/ml 0,011 0,01 0,005 <0,001 < 0,001 <0,001 0 Corridor Elevator hall Street near entrance of building All fibers longer 5 mkm (optical microscopy) Chrysotile fibers longer 5 mkm (electron microscopy)
  • 46. Fiber concentrations in living buildings Concentration (f/ml) 0,09 0,08 0,07 0,06 0,05 0,04 0,03 0,02 0,01 0 5-storeys block 16-storeys panel 9-stores panel building buildings buildings (renov ation of water supply sistem) All fibers longer 5 mkm (PCOM) Organic fibers longer 5 mkm (SEM) Chrysotile asbestos fibers longer 5 mkm (SEM) Other inorganic fibers longer 5 mkm (SEM)
  • 47. Fibre concentrations were measured also at five locations near Moscow motorways (North, East, South, West and Center). A series of measurements were made near a thermal power plant where large quantities of asbestos and MMMF insulations were removed, repaired and installed.
  • 48. fibres concentrations in the air of Moscow motorways 0,009 0,008 0,007 0,006 0,005 Concentration (f/ml) 0,004 0,003 0,002 0,001 0 North East South West Center Center (near thermal power station) Phase-contrast optical microscopy (all fibers longer 5 mkm) Electron microscopy (chrysotile fibers longer 1 mkm) Electron microscopy (chrysotile fibers longer 5 mkm) Electron microscopy (chrysotile fibers < 5 mkm) In summertime samples, low concentrations of all fibres (> 5µm) and chrysotile (>1 µm) were found at five locations near Moscow motorways. The mean concentrations were 0,002 f/ml and below 0,001 f/ml, respectively.
  • 49. In general, the results of this study in Moscow are consistent with measurements of nonoccupational exposure to fibrous particles in other urban areas in Russia. General conclusions were: - asbestos cement materials and other asbestos containing construction materials when used with ordinary precautions without intensive destruction can not be recognized as sufficient source of ambient air contamination by asbestos fibres; - uncontrolled demolition and repair of friable asbestos and MMMF materials can be an important source of occupational and nonoccupational exposure to mineral fibres.
  • 50. Crocidolite Rodusite Anthophyllite Actinolite
  • 51. Despite the fact that amphiboles never have been used in Russia in civil industry, certain amounts of crocidolite and anthophylite was mined and used for special non-civil purposes.
  • 52. Exposure to amphiboles is possible due to: - erosion of soils in areas, surrounded their deposits (even never being processed), - in shipbuilding industry during maintenance works at old ships built in countries, where amosite and crocidolite were widely used in insulation products. This is the one of fields for priority actions.
  • 53. Insulation materials contained chrysotile and amosite removed during ship renovation
  • 56.
  • 57. Especially should be stressed necessity of series of epidemiological studies to define risk of carcinogenic effects due to occupational and non-occupational exposure to chrysotile asbestos in modern conditions.
  • 58. «…The risk estimates used in the calculations … were derived from past exposures to relatively high levels of chrysotile. Current levels of exposure are much lower … and as such risk extrapolations may be an overestimate. There are several other reasons why there is a great deal of uncertainty regarding these risk estimates…»
  • 59. Further work and selection of priority directions of actions will be possible only after realization of fundamental for further activities phase – preparatory phase according to ILO/WHO “Outline for the Development of National Programmes for Elimination of Asbestos Related Diseases”.
  • 60.
  • 61. The issue of banning chrysotile or restricting it in international trade has been repeatedly raised by both national and international organisations although scientific evidence of impossibility of its safe and responsible use has never been provided. Moreover, the question about banning chrysotile is usually raised by the countries where pure chrysotile free of more hazardous and justly prohibited amphibole asbestos fibres has never been used. So evaluation of existing scientific data published in international sources were made.
  • 62. Chrysotile versus amphiboles (why it is impossible to use most of European and US epidemiological studies to access risks related to chrysotile exposure)
  • 63.
  • 64.
  • 65.
  • 66.
  • 67.
  • 68.
  • 70. less
  • 71. … Most chrysotile fibres disappear from the lung within a year, and a limited period of chrysotile exposure causes very few mesotheliomas in workers with no other exposure. … observations suggest that chrysotile exposure could increase the lifelong mesothelioma risk in those whose lungs contain persistent amosite or crocidolite, just as it causes a much larger increase in the lung cancer risk in lifelong smokers than in non-smokers (Hammond et al., 1979b) …
  • 72. The effect on mesothelioma risk of stopping asbestos exposure is much less marked than that of stopping smoking on lung cancer risk (Peto et al., 2000), perhaps because amphibole fibres persist in the lung for many decades after exposure has ceased, so even brief exposure produces a lifelong carcinogenic stimulus ...
  • 73.
  • 74.
  • 75.
  • 76.
  • 77.
  • 78.
  • 79. «...Cohort studies of populations of workers using only or predominantly chrysotile- containing products in applications such as construction have not been identified. Some relevant information is available, however, from population-based analyses of primarily mesothelioma in application workers exposed generally to mixed fibre types…” Environmental Health Criteria 203 − Chrysotile Asbestos (IPCS-1998)
  • 80. “…It should be recognized that although the epidemiological studies of chrysotile- exposed workers have been primarily limited to the mining and milling, and manufacturing sector, there is evidence, based on the historical pattern of disease associated with exposure to mixed fibre types in western countries, that risks are likely to be greater among workers in construction and possibly other user industries…” Environmental Health Criteria 203 − Chrysotile Asbestos (IPCS-1998)
  • 81.
  • 82.
  • 83. 4. …substitutes may be used in a variety of applications with different exposure potential, either alone or in combination with other substances, the workshop did not embark on risk assessment, but rather, limited its work to assessing the hazard...
  • 84. 7. …A completely inert fibre that could be used as a negative control in the … assays has not been identified…