Labour Protection Requirements For The Protection Of Workers Against The Risks Of The Electromagnetic Field Of The Working Environment

Original Language Title: Darba aizsardzības prasības nodarbināto aizsardzībai pret elektromagnētiskā lauka radīto risku darba vidē

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Cabinet of Ministers Regulations No. 745 in 2006 (September 5. 45. § 3) labour protection requirements of employees for protection against electromagnetic fields the risk working environment Issued in accordance with the Labour Protection Act article 25 paragraph 18 i. General questions 1. labour protection requirements for the protection of workers against the risks in the working environment or might cause a electromagnetic field exposure (hereinafter referred to as the health claim).
2. Electromagnetic fields within the meaning of these rules are static and variable electric, magnetic and electromagnetic fields, which do not exceed the frequency 300GHz. 3. rules applicable to all areas of employment where workers work environment are or may be exposed to electromagnetic fields exposure, if known, its effect is temporary and transitory, and they do not occur due to long-term effects on human health. Electromagnetic field exposure produces induced current flow and absorption of energy in the body, as well as overhead, except the risk posed by the rotating heads.
4. If the site is publicly accessible for visitors, the employer may not take the electromagnetic field of the assessment of risks, measurements or calculations according to the requirements set out in these rules, if they are made in accordance with the laws and regulations on electromagnetic fields (from 0Hz to 300GHz) the effect on the population.
5. compliance with these provisions, the employer is responsible.
6. the employer must not put employees electromagnetic field exposure in excess of the limit values for exposure.
7. The exposure limit values within the meaning of these provisions is the electromagnetic field exposure limits, established on the basis of its impact on human health, and that subject to the workers who are exposed to electro magnetic fields are protected against the harmful effects on health.
8. Labour protection requirements under the control of the Labour Inspectorate.
9. Employer under the labour protection requirements set out in law consult workers or their fiduciaries on matters related to the electromagnetic field generated by the risk to the environment, as well as the possible participation of the workers.
II. Electromagnetic field exposure and assessment of risks by the employer in all 10 working places performs first electromagnetic field risk assessment in determining whether it is electromagnetic field radiation sources that could cause harm to human health.
11. If working place is the source of the electromagnetic field, electromagnetic fields the risk assessed by the employer in accordance with the laws and regulations of the internal monitoring of the procedure at least once a year, as well as in the following cases: create a new job or a substantial change in the work environment (for example, changes in work processes, methods, work equipment), that risk could increase;
11.2. employment in the health check results show that workers ' health is caused by electromagnetic field exposure. In this case, the employer shall reassess the risk.
12. If the examination of the place of work and the working equipment of technical documentation the employer establishes that the electromagnetic field creates or may create a risk to the safety and health of workers, the employer shall ensure the electromagnetic field of the assessment of risks and in accordance with the results obtained, if necessary, make the electromagnetic field measurements or calculations, taking into account the provisions set out in annex 1 of the exposure action values and the equipment manufacturer's specific emission levels If the equipment is regulated.
13. The Risk assessment shall indicate the results of the measurements and the measurement of the electromagnetic field: 13.1. If the measurement results are from 80% to 100% of the exposure action values, the next measurement is performed after three years;
13.2. If the measurement is the size of the exposure action value or exceeds it, the next measurement is carried out each year.
14. The electromagnetic field measurement using the legislation on measuring means verification, verification certificates and verification marks specified in order verify measuring equipment, which according to the manufacturer's instruction for use is suitable for the required electromagnetic field measurements, do: 14.1. competent authorities;
14.2. the national agency "Latvian National Accreditation Bureau" to the standard LVS EN ISO/IEC 17025:2005 "the competence of testing and calibration laboratories-General requirements" accredited laboratory, for which the Ministry of Economic Affairs launched the publication in the newspaper "Latvian journal";
UR14.3.cit au, European Union Member States accredited institutions entitled to carry out measurements of the electromagnetic field;
14.4. the competent specialists;
14.5. prepared by senior labour protection specialists (occupational standard PS 0100 "senior protection officer");
14.6. the person with the appropriate qualifications to carry out the measurements.
15. the employer in assessing the risk, with a particular focus on the following: 15.1 the electromagnetic field exposure level, frequency spectrum, duration and type;
15.2. the exposure limit values and exposure action values that are directly measurable values, expressed as electric field strength (E), magnetic field strength (H), magnetic induction (B) and power density (S);
15.3. the electromagnetic field effects on the safety and health of workers belonging to particularly sensitive risk groups (for example, adolescents, pregnant women, women who have recently given birth);
15.4. the indirect impact of the electromagnetic field, including: 15.4.1. electronic medical equipment and devices, including the elektrokardi pacemaker and other implanted equipment malfunctions;
15.4.2. risks to get a mechanical impact of the feromagnētisk objects in static magnetic fields with a magnetic induction of more than 3 m;
15.4.3. elektroeksplozīv devices (detonators) actuation;
15.4.4. fires and explosions, resulting from ignition of flammable materials by sparks caused by induced fields, contact or discharge of sparks;
15.5. the existence of equipment designed to decrease the elektromag nētisk field effect level;
15.6. the information obtained by health workers;
15.7. the multiple electromagnetic field radiation source being;
15.8. more frequency field exposure at the same time.
16. the employer shall document and keep all the electromagnetic field risk assessment and measurement of results in the EU. After the deadline for the deposit in the archive.
III. The electromagnetic field created in the elimination or reduction of risk 17. If risk assessment finds that have exceeded the exposure action values that are specified in annex 1 of these regulations, the employer regulations on internal supervision of the working environment established carry out one or more of these rules laid down in paragraph 20.
18. In assessing or reducing the risks of electromagnetic fields, the employer complied with the statutory protection of the work of the General principles of protection.
19. the employer according to the risk assessment shall take the necessary measures of electromagnetic field for the elimination or reduction of risks to a minimum (the lowest practical level) based on technical progress and using the latest features of the electromagnetic field sources of risk control.
20. If, in accordance with the risk assessment work has exceeded the rules laid down in annex 1 exposure action values, but not exceed the provisions set out in annex 2 of the exposure limit values, the employer shall devise and implement protection measures. Arrangements for the protection plan includes the following organizational and technical measures: 20.1. using other methods of work that are associated with less exposure to electromagnetic fields;
However, the facilities of the UR20.2.izv, which has a smaller electromagnetic fields;
20.3. technical measures for emission reduction of electromagnetic fields, if desired, by installing a lock device, shielding or similar health protective devices;
20.4. ensure adequate work arrangements and work equipment maintenance and upkeep;
20.5. optimizes the work place design and layout;
20.6. limit the duration and intensity of exposure;
20.7. provide suitable personal protective equipment available.
21. These rules 4 and 20 referred to places of work, the employer places the safety signs in accordance with the legislation on labour protection requirements for safety in the use of the marks.
22. If the rules referred to in point 20 places of work there is a risk of technically exceed the exposure limit values, the employer shall restrict access to dangerous zones established in the risk assessment.
23. If the employer's risk reduction measures for the exposure limit values are exceeded, the employer shall: 23.1. immediately take steps to prevent the exposure of workers to electromagnetic fields and such to reduce its exposure to it does not exceed the exposure limit values;

23.2. analyzes and determines the reasons for which the electromagnetic field exposure exceeds permissible exposure limit values;
23.3. making changes to employment protection measures, to prevent the permissible exposure limit values being exceeded.
24. the labour protection measures against electromagnetic field for the elimination or reduction of the risks, the employer shall ensure that the measures applied in the protection of their employees, which in accordance with the laws and regulations are laid down special protection (for people up to the age of 18, pregnant women, women who have recently given birth, persons with disabilities, persons who for health reasons, for example, required a heart elektrostimulator, metal prostheses).
25. The employer shall ensure that workers exposed to electro magnetic field would risk jobs, and the workers ' representatives are duly trained and informed about: 25.1. electromagnetic field exposure and potential risks to the safety and health of employees;
25.2. the protection measures that minimise electromagnetic field effects on the risks for the safety and health of employees;
25.3. the electromagnetic field exposure limit values and exposure action values and the associated potential risks;
25.4. the results of electromagnetic field exposure levels assessments, measurements or calculations carried out in accordance with the provisions of chapter II;
25.5. the electromagnetic field exposure induced signs of health problems, early detection of health problems and action if health problems have arisen;
15.9. the circumstances in which workers are entitled to health surveillance and its importance;
UR25.7.dro these working methods, as well as the correct and safe use of work equipment, to avoid the risk of electromagnetic field.
IV. health examination of employees 26. If employee exposed to the electromagnetic field exposure to risks that exceed this rules set out in annex 1 of the exposure action values, the employer provides health surveillance in accordance with the legislation on minimum health checks to early detect electromagnetic fields caused health problems and ensure the quality of health workers.
27. The employer shall ensure the availability of the results of the risk assessments for occupational disease family physicians and certified physician who carried out through health surveillance.
28. If the health check finds health employed by certified occupational physician evaluates the electromagnetic field exposure effects, the doctor informs the employee of the results of the investigation and providing information and recommendations on health care even after the termination of the effects of the electromagnetic field, as well as according to the legislation on compulsory health checks on the results of the health surveillance informs the employer.
29. Information for workers and employers on the health inspection results, for the necessary treatment and State of health of employees additional medical investigations and treatment services provides health care to regulatory legislation.
30. the employer regularly document the results of the health surveillance of employees. By the competent authorities or the National Labour Inspectorate's reasonable request, the employer shall issue a copy of the results of the health surveillance.
31. the employer shall take into account the results of the health surveillance, planning and determining the measures for the protection of electromagnetic field for the elimination or reduction of the risks to acceptable levels.
32. the employer shall keep all employee health testing results in the EU. After the deadline for the deposit in the archive.
V. concluding questions 33. Ministry of welfare once every five years, beginning with the date of entry into force of the rules, the European Commission report on the implementation of the provisions, indicating the social partners ' opinions.
34. the rules shall enter into force by 1 January 2008.
Informative reference to European Union Directive provisions included in the law arising from the European Parliament and of the Council of 29 April 2004, Directive 2004/40/EC on minimum health and safety requirements regarding the exposure of workers to risks arising from physical agents (electromagnetic fields) (eighteenth individual Directive within the meaning of article 16(1) of Directive 89/391/EEC means).
Prime Minister a. Halloween Welfare Minister d. Staķ is the Editorial Note: regulations shall enter into force by 1 January 2008.
1. the annex to Cabinet of Ministers of 5 September 2006, regulations no 745 exposure action values 1. Exposure action value (electromagnetic field exposure levels values) are derived from the exposure limit values according to the rationale used by the International Commission on non-ionizing radiation protection (ICNIRP) guidelines on limiting exposure to ionizing radiation (ICNIRP 7/99).
2. Contact (Each) is the power flow in the human body, then coming into contact with the driver electromagnetic field, expressed in amperes (A).
3. The power density (J) is the power flow through a unit cross section, unit area perpendicular to the direction of current flow, flow into the driver, such as the human body or part of it, expressed in amperes per square metre (A/m2).
4. the electric field strength (E) is a vectorial field value that corresponds to a force that acts on charged particle regardless of its movement in space, expressed in volts per meter (V/m).
5. Magnetic field intensity (H) is a vectorial field size, which together with a magnetic induction describes the magnetic field at any point in space, expressed in amperes per meter (A/m).
6. Magnetic Induction (B) is a vectorial field size, which manifests as a force that acts on moving charges, expressed in Tesla (T). In free space and in biological materials magnetic induction and magnetic field intensity can be interchangeable, using equation 1A/m = 4π10-7 t. 7. Power density (S) is used to describe a very high frequency, where the depth of penetration radiation body is small. Power density is determined by power flow which runs perpendicular to the body surface, divided by the surface area. It is expressed in watts per square metre (W/m2).
8. the specific energy absorption (SA) is the energy absorbed by unit mass of biological tissue, expressed in joules per kilogram (J/kg). It is used to limit the microwave radiation is not siltumefekt.
9. the specific energy absorption rate (SAR) is the rate at which energy is absorbed per unit mass of the body, expressed in watts per kilogram (W/kg). The SAR is calculated on average the entire body or parts of the body. Whole body SAR is measured, establishing the link between junk and siltumefekt radio frequency (RF) field.
Band electric field intensity E (V/m) magnetic field intensity H (A/m) magnetic induction, B, the equivalent of plakanviļņ (μT) power density (W/m2) Sekv contact current (mA) of Every Extra in mitāt induced current, IL (PA) 0-1Hz-1,63 × 105 × 105-1.0-1, 2-8 Hz 20000 1.63 × 105/f 2/2 f 2 × 105-1.0-8-25 Hz 20000 2 × 104/f 2.5 × 104/f – 0.025-0-1.0, 82kHz 500/f 20/f/f 25:1.0-2,5 kHz 610 24.4 30.7-0.82 1.0-
2,5 kHz-65 610 24.4 30.7-f-65-100 kHz 0.4 610 1600/2000/f f-1 f-0,1-0.4 MHz 610/f 2/f 1.6-1 10 MHz 40-610/f 1,6/f 2/f-40-10-110 MHz-400 MHz 61 61 10 40 100 110 0.16 0.2 0.16 0.2 10 – – 400-2000 MHz 3f 0 ½ ½ 0 ½ 008f 01f, f/40 – – 2 – – – 300 GHz 10.137 0.36 0.45 50 f is the frequency bands listed in column units.
11. The frequencies of 100 kHz to 10GHz average Sekv, E2, H2, B2 and IL2 value calculation of six-minute time interval.
12. Frequencies exceeding 10GHz average Sekv, E2, H2 and B2 values calculated 68/f1.05 minutes interval (expressed in GHz (f)).
13. Frequencies up to 100 kHz ending exposure action values for the field strengths can be obtained by mean-squared value multiplied by (2) ½ impulses with duration tp. equivalent frequency, which matches the exposure action values, calculated using the formula f = 1/(2tp).
14. from 100 kHz to 10 MHz frequencies ending calculate exposure action values, the average weighted value multiplied by 10, where a = [0, 665log (f/105) + 0,176], f is expressed in Hz. Frequencies from 10 MHz to 15 300GHz ending calculate exposure action values, the field strength value weighted average multiplied by 32, but the equivalent power density plakanviļņ values with 1000.16. for impulsive or transition of electromagnetic fields or more frequency field exposure at the event, the appropriate assessment the measurement or calculation method, which allows you to analyze wave form, characteristics and biological interactions in nature, having regard to the applicable standards.

17. the pulse modulated electromagnetic fields with medium frequency above 10 MHz must be such that the value of the average Sekv pulse duration time does not exceed the specified permissible Sekv value more than 1000 times, but the field strength does not exceed the permissible field strength value that corresponds to the medium, the frequency of more than 32 times.
Welfare Minister d. Staķ annex 2 of the Cabinet of Ministers of 5 September 2006, regulations no 745 1. The exposure limit values of power density over time, changing fields are defined in the exposure limit values to 1Hz to prevent effects on the heart, blood vessels and central nervous system.
2. Power density exposure limit values are established from 1Hz up to 10 MHz, in order to prevent effects on the central nervous system.
3. the SAR has a specific size exposure of 100 kHz to 10GHz to prevent whole-body heat load and excessive localised heating of tissues. Both the power density and size are determined SAR exposure limit values in the range of 100 kHz to 10 MHz. 4. Power density is designed for the exposure limit values from 10GHz to 300GHz, to prevent excessive tissue heating at the surface of the body or its vicinity.
Frequency band power density in the head and torso to J (mA/m2) (mean square value) whole-body average SAR (W/kg) the local SAR (head and body) (W/kg) the local SAR (extra-mitāt) (W/kg) power density (W/m2) and 1 Hz 40 – – – – 1 – 4 Hz 40/f – – – – 4 – 1000 Hz 10 – – – – 1000 Hz-100 kHz (f)/100 – – – – 100 kHz-10 MHz (f)/100 10 20-10 0.4 MHz-10 GHz-10 20 10 0.4 – – – – – – 300 GHz 50 note. * f is expressed in Hertz frequency.
5. The exposure limit values of power density are intended to protect against exposure effects on central nervous system tissues in the head and torso. Exposure limit values in the frequency band from 1Hz up to 10 MHz are based on established adverse effects on the central nervous system. Such effects are essentially instantaneous and there is no scientific justification to temporarily change the exposure the exposure limit values. However, since the exposure limit values refer to adverse effects on the central nervous system, these exposure limit values under the same exposure conditions may allow for greater power density in the tissues of the body, which is not a central nervous system.
6. The human body electric power due to the heterogeneity of the density is calculated as the mean of the cross-sectional area of the 1cm2 perpendicular to the direction of current flow.
7. The frequencies up to 100 kHz power density tops values can be obtained by multiplying the average weighted value by (2) ½ 8. Frequencies up to 100 kHz and for pulsed magnetic fields, the power density value of the apex associated with the pulses can be calculated, taking into account the growth/fall time and magnetic induction changes the maximum speed. The induced current density can then be compared with the corresponding exposure limit value. Pulses of duration tp the equivalent frequency with which comply with the exposure limit values, calculated using the formula f = 1/(2tp).
9. all SAR values are calculated as the arithmetic mean value of the six-minute time period.
10. the local SAR average used to calculate the mass of 10 g of contiguous tissue. The maximum SAR so obtained value is the value used for the calculation of the exposure. These 10 g of tissue are intended as the adjacent tissue masses with almost uniform electrical properties. Specifying the adjacent tissue masses, it is considered that this method can be used in computational dosimetry but may give rise to difficulties in making direct physical measurements. You can use a simple cube-shaped tissue mass, if the calculated dozimetrisk values are conservative values relative to exposure guidelines.
11. to limit the expansion of the termoelastīg impact on the hearing and to avoid such impact, for pulsed exposures in the frequency range from 0.3 up to 10GHz and localized exposure of the head, it is recommended that you use the additional exposure limit value. Thus, the SAR value may not exceed 10mJ/kg, calculated on average to 10 g of tissue.
12. the average power density is calculated on the exposed area 20cm2 and 68/f1.05-minute period (where f is in GHz) to compensate for tissue penetration, which gradually becomes smaller with increasing frequency. Maximum power density in the room calculated as average to 1cm2, shall not exceed a 50W/m2 × 20.13. with regard to pulsed or transient electromagnetic fields, or for multiple frequency field exposure at the relevant assessment, measurement or calculation methods which you can use to analyze wave form characteristics and biological interactions in nature, having regard to the applicable standards.
Welfare Minister d.-Staķ