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DIRECTIVES 83/477/EEC, 91/382/EEC and 2003/18/EC. PROTECTION OF WORKERS FROM THE RISKS RELATED TO THE EXPOSURE TO ASBESTOS AT WORK. 83/477/EEC. Limit value Restrictions Prohibition of spraying. 91/382/EEC. 2003/18/EC. Limitation of activities Limit value Analythical Method. SCOPE.
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PROTECTION OF WORKERS FROM THE RISKS RELATED TO THE EXPOSURE TO ASBESTOS AT WORK 83/477/EEC • Limit value • Restrictions • Prohibition of spraying 91/382/EEC 2003/18/EC • Limitation of activities • Limit value • Analythical Method
SCOPE • Protection of workers of risks from exposure to asbestos at work • It doesn’t apply to: • Sea transport • Air transport DIRECTIVE 2003/18/CE
ASBESTOS • Asbestos is a fibrous silicate which includes two main types: Serpentine Amphibole
For the purposes of the Directives “Asbestos” includes the following: • Actinolite • Amosite • Chrysotile • Crocidolite • Anthophyllite • Tremolite
ASSESSMENT • If the activity implies a risk of exposure of dust arising from asbestos (or materials which contain it), the risk must be assessed.
NOTIFICATION • Activities in which workers are or may be exposed to asbestos, must be covered by a notification system administered by the responsible authority of the member state, the notification must be submitted before the works begins and include: • the location of the work site, • the type andquantities of asbestos used or handled, • the activities and processes involved, • the number of workers involved, • the startingdate and duration of the work, • measurestaken to limit the exposure of workers to asbestos. • If there is any change likely to result in an increase of exposure, a new notification must be submitted.
RETRICTIONS • In certain conditions the following articles shall not apply: • Art. 4 (Notification) • Art. 15 (Clinical surveillance) • Art. 16 (Register of workers) • These restrictions have been changed, from the Directive 83/ 477/EEC
83/477/EEC • Concentration of asbestos fibres, in absence of any individual protective equipment (for an 8 hour reference period) lower than: • 0,25 fibre/cm3 • A cumulative dose of 15 fibre-days per cm3 over 3 months
2003/18/EC • When exposure is sporadic and of low intensity, and it is clear that the exposure limit for asbestos will not be exceeded in the air of the working area, in: • short, non-continuous maintenance activities in which only non-friable materials are handled, • removal without deterioration of non-degraded materials in which the asbestos fibres are firmly linked in a matrix, • encapsulation or sealing of asbestos-containing materials which are in good condition, • air monitoring and control, and the collection of samples to ascertain whether a specific material contains asbestos.
PROHIBITIONS • The application of asbestos by means of the spraying process and working procedures that involves low density (less than 1g/cm3) • Activities which expose workers to asbestos fibres during: • the extraction of asbestos (mining) • the manufacture and processing of asbestos products or products containing intentionally added asbestos EXCEPT the abatement and disposal of products resulting from demolition and asbestos removal.
MEASURES TO MINIMIZE EXPOSITION • Limitation of the number of workers exposed to minimal • Work processed designed to avoid the production of dust, or if that proves imposible, to avoid the release of dust • Cleaning and maintenance • Asbestos material must be stored and transported in suitable sealed packing • Waste must be collected and removed from the workplace as soon as possible in suitable sealed packing with labels indicating that it contains asbestos.
CONTROL OF EXPOSURE • Regular measurement of asbestos fibres in air • Representative sampling • Sampling after consultation of the workers and/or their representatives • Sampling carried out by suitably qualified personnel • Fibre counting shall be wherever possible by PCM (phase-contrast microscope) in accordance with the 1997 WHO (World Health Organisation) recommended method or any other method giving equivalent results
EXCEEDING LIMIT VALUES • Identification of reasons and remedy of the situation • Suspension of works until adecuate protection measurements are taken • Checking the effectivity of measures taken • Invividual respiratory protective equipment if the exposure cannot be reduced by other means
DEMOLITION MAINTENANCE/ WORK • Identification of presumed asbestos-containing materials. • If there is any doubt the applicable provisions of the Directive shall be observed
SPECIAL ACTIVITIES • In case of activities in which is foreseable to exceed the limit value: • suitable respiratory and other personal protective equipment, which must be worn; • warning signs • the spread of dust must be prevented • consultation to the workers and/ or their representatives
WORKING PLAN • It’s mandatory in works of demolition or removing of asbestos, from buildings, structures, plants, installations or ships. It has to specify: • Removing of asbestos before demolition • Provision of personal protective equipment, if necessary • When demolition or removal work is finished, the absence of asbestos exposure risk
WORKING PLAN (II) • The plan shall include information on the following: • the nature and probable duration of the work, • the place where the work is carried out, • the methods applied where the work involves the handling of asbestos or materials containing asbestos, • the characteristics of the equipment used for: • protection and decontamination of people carrying out the work, • protection of other persons present on or near the worksite.
TRAINING • Regular and free for workers, and should include: • Properties of asbestos and its health effects • Products or materials likely to contain asbestos • Risk operations and preventive controls • Safe work practice and protective equipment • Emergency procedures • Decontamination procedures • Waste disposal • Medical examination requirements
ORGANIZATIVE MEASURES • Work places: • Demarcated and indicated with warning signs • Only accessible to workers who have work or duties in there • Non smoking areas • “Clean zones” for eating and drinking • Working/Protective clothes • Laundry by the enterprise • Separate storage places for street clothes and working clothes • Washing and toilet facilities • Maintenance of protective equipment
WORKERS INFORMATION • Potential risks to health • Limit values and the need of air monitoring • Hygiene requirements • Use of protective equipment and clothing • Precautions to minimize exposure to asbestos • Access to the results of measurements • When limit values are exceeded, the reasons, • Consultation or information about the measures taken
CLINICAL SURVEILLANCE • Assessment of the worker’s state of health before the beginning of exposure to asbestos. • New assessment of workers at least every 3 years. • Study of results • Information about surveillance at the end of exposure • The worker and the employer may request a review of the assessment.
REGISTER OF WORKERS EMPLOYER • Worker/s concerned • Nature • Duration Any activity aimed of the Directive KEPT FOR 40 YEARS WITH THE MEDICAL RECORDS REGISTER Results related personally to him Collective information (anonymous) WORKER WORKERS/ REPRESENTATIVES DOCTOR
REGISTER OF DISEASES • Member States shall have a register of recognized cases of: • Asbestosis • Mesothelioma
ANALYTHICAL METHOD (WHO) • Principle of the method: • Sampling of a known air volume • Filters are “cleared” (rended transparent) • Fibres in a measured area of the filters are counted using a phase-contrast optical microscopy
Sampling Sampling pump Filter holder Filter Counting Microscope Graticule Stage micrometer Test slide MATERIAL
Base plug Base xxx Esters of cellulose Back-up pads Membrane filter Cowl Cellulose nitrate End cap End cap plug
COUNTING FIBRES • The fibres counted must have the following properties: • L>5μm • D<3 μm • L/D>3
COUNTING • Counting fields are choosen at random. The counting finishes: - 100 fields counted -100 fibres counted - A minimum of 20 fields must be counted
CALCULATION c = concentration (fibres. ml-I) D = diameter of the exposed filter area (mm) N = total number of fibres counted d = diameter of the gRaticule (pm) n = number of graticule areas examined v = volume of air sampled (litres)