Government Decree No. 1 / 2008 Coll.
Government regulations on health protection against non-ionising radiation
Valid
Effective from 30.04.2008
Contents
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1
GOVERNMENT REGULATION
of 12 December 2007
on the protection of health against non-ionising radiation
The Government mandates pursuant to Section 108 (3) of Act No. 258 / 2000 Coll., on the Protection of Public Health and on the Amendment of Certain Related Laws, Section 21 (a) of Act No. 309 / 2006 Coll., which regulates other requirements of safety and health at work in employment relations and on health and safety in activity or provision of services outside employment relations (Act on other conditions of safety and health at work) and for the implementation of Act No. 262 / 2006 Coll., Labour Code, as amended:
SUBJECT MATTER OF THE ADJUSTMENT
(1) This Regulation implements the relevant provisions of the European Communities1) and provides for
(a) hygiene limits for non-ionising radiation, methods and methods of detection and evaluation and minimum scope of measures to protect health at work;
(b) the maximum permissible exposure values of natural persons in the communal environment (hereinafter referred to as "other persons") to non-ionising radiation in the frequency range from 0 Hz to 3 · 1011 Hz, the method of detection and evaluation;
(c) assessment of the risk of non-ionising radiation in the frequency range from 0 Hz to 1,7 · 1015 Hz;
(d) the manner in which lasers are classified and labelled, the manner in which laser measures are taken by warning text or signalling, the extent of the technical documentation of the laser necessary for health protection and the minimum technical and organisational measures to limit exposure to laser radiation;
(e) cases of identification of sites where exposure may exceed the maximum permitted values by warning;
(f) the minimum level of information for workers on occupational health protection associated with exposure to non-ionising radiation.
(2) Where this Regulation refers to the maximum permissible exposure value of non-ionising radiation in relation to workers, it shall be understood to mean the hygiene limit of non-ionising radiation under the Working Safety and Health Protection Act (2).
(3) This Regulation shall also apply to legal relations relating to the protection of health in the activity or provision of services outside the employment relationship, taking into account the conditions of the activity or provision of services and their scope (2).
(4) This Regulation shall not apply to the use of non-ionising radiation sources in which the patient is exposed to non-ionising radiation when providing health care.
HEALTH PROTECTION CONDITIONS FOR WORK AND ACTIVITIES OR PROVISION OF SERVICES WITHOUT WORKING LEGAL RELATIONS
Maximum permitted exposure values for non-ionising radiation
(K § 7 (7) of Act No. 309 / 2006 Coll.)
(1) Under this Regulation:
(a) non-ionising radiation of static magnetic and time variable electrical, magnetic and electromagnetic fields and radiation with frequencies of 0 Hz to 1.7 · 1015 Hz;
(b) the highest permitted exposure limit values which are based directly on proven health effects and biological activity data and which ensure that persons exposed to non-ionising radiation are protected against all known harmful effects;
(c) reference values of directly measurable radiation parameters in the frequency range from 0 Hz to 3 · 1011 Hz, which are electrical field intensity, magnetic field intensity, magnetic induction and luminous flux density.
(2) The reference values and maximum permitted values are set out in Annex 1 to this Regulation.
(3) If reference values are exceeded, the calculation or measurement referred to in Article 3 (1) shall be carried out. Compliance with reference values ensures that maximum permitted values are not exceeded.
Employer's procedure for the detection and evaluation of maximum permissible values
(§ 7 (7) of Law No 309 / 2006 Coll. and § 102 (3) of the Labour Code)
(1) Compliance with the maximum permitted values of modified current density induced in the body, measured in the body of absorbed power and radiant flow density, is determined by calculation or measurement
(a) human body models or parts thereof; or
(b) the electrical field intensity, magnetic induction, radiant flow density, contact and induced current flowing through any limb established for the situation under consideration, and their comparison with the reference levels of these quantities as set out in Annex 1 to this Regulation, Tables 4 to 11.
(2) The reference levels may be exceeded if, in the manner referred to in paragraph 1 (a) or (b), it has been demonstrated that the maximum permitted values are not exceeded.
(3) The calculation or measurement referred to in paragraph 1 or the assessment referred to in paragraph 4 need not be carried out by the employer when working with a source of non-ionising radiation is carried out in a workplace accessible to the public, provided that the employer has already carried out an assessment of the exposure of other non-ionising persons to non-ionising radiation in accordance with Section 7, indicating that the maximum permitted values for workers are respected and safety risks are excluded.
Assessment of the risk of non-ionising radiation
(K § 102 (4) of the Labour Code)
When assessing the risk of non-ionising radiation in the frequency range from 0 Hz to 3 · 1011 Hz, the employer takes particular account of:
(a) the intensity, frequency, duration and type of exposure;
(b) the maximum permissible values and reference levels referred to in Annex 1 to this Regulation;
(c) any effects on the health and safety of workers at particular risk, in particular young workers and pregnant workers;
(d) any indirect effects such as:
1. interference of electronic and medical devices including pacemakers and other implanted medical electronic devices;
2. risks associated with the extinction of ferro-magnetic objects by the action of a static magnetic field with magnetic induction exceeding 3 mT;
3. the risk of ignition of electrically operated detonators;
4. fires and explosions resulting from the ignition of flammable materials by sparks caused by induced or contact currents or secondary discharge;
(e) the existence of backup equipment designed to reduce exposure to electromagnetic fields;
(f) the relevant information obtained from health surveillance carried out by racing preventive care facilities, including published information;
(g) exposure from several sources;
(h) current exposure to fields with different frequencies.
Minimum scope of measures to protect workers' health
(K § 7 (7) of Act No. 309 / 2006 Coll.)
(1) The exposure of an employee to electrical or magnetic fields and electromagnetic radiation with a frequency from 0 Hz to 3 · 1011 Hz shall be limited so that the modified body-induced current density, measured in the body by the absorbed power and the radiant flow density of the electromagnetic wave with a frequency exceeding 1010 Hz affecting the body or part of the body, does not exceed the maximum permissible values set out in Annex 1 to this Regulation.
(2) The exposure of non-ionising workers with a frequency from 3 × 1011 Hz to 1,7 × 1015 Hz (infrared, visible and ultraviolet radiation) from non-natural sources is limited in such a way that the density of radiant flow and the density of radiant energy affecting the body or part of the body does not exceed, for workers, the maximum permitted values set out in Annexes 2 and 3 to this Regulation.
Minimum range of information provided by workers to protect health at work
[Paragraph 103 (1) (f) of the Labour Code]
The employer must always provide information on:
(a) the measures taken pursuant to this Regulation, the maximum permissible values, the method for determining them and the possible risks resulting from their overrun;
(b) the results of the survey and evaluation;
(c) ways of recognising and reporting the harmful effects of exposure to health;
(d) safe working practices to reduce the risks associated with exposure to non-ionising radiation.
CONDITIONS FOR HEALTH PROTECTION OF OTHER PERSONS
Maximum exposure values and the procedure of a person who uses or operates a non-ionising radiation source to detect and evaluate exposure of other persons
(For § 35 of Act No. 258 / 2000 Coll.)
(1) Paragraph 2 (1) (b) and (c) and paragraphs 2 and 3, § 3, § 4 (b) and § 5 apply mutatis mutandis for the detection and assessment of exposure of other persons.
(2) Places accessible to the public where, according to the exposure assessment of other persons, the reference values in the 0 Hz - 300 Hz frequency band established in accordance with § 3 are exceeded shall be marked by warning natural persons using a pacemaker to the potential risk.
EMPLOYERS 'HEALTH PROTECTION BEFORE THE INDISTINCT EFFECT OF OPTIC LIGHT
(K § 35 and 36 of Act No. 258 / 2000 Coll.)
(1) Optical radiation means, for the purposes of this Regulation, radiation from artificial sources in the frequency range from 3 · 1011 Hz to 1,7 · 1015 Hz corresponding to wavelength from 100 nm to 1 mm, the spectrum of which is divided into:
(a) ultraviolet radiation in the wavelength range from 100 nm to 400 nm which is further divided into:
1. UVA ultraviolet radiation corresponding to wavelength from 315 nm to 400 nm;
2. ultraviolet UVB radiation corresponding to wavelength from 280 nm to 315 nm; and
3. ultraviolet UVC radiation corresponding to wavelength from 100 nm to 280 nm;
(b) visible radiation in the wavelength range from 380 nm to 780 nm;
(c) infrared radiation in the wavelength range from 780 nm to 1 mm.
(2) According to the emission process, optical radiation is distinguished into coherent and uncoherent. Coherent radiation arises from stimulated emissions where its phase and frequency are clearly defined; radiation emitted by laser is radiation coherent. Non-coherent radiation causes spontaneous emissions of radiation.
(3) For the purposes of this Regulation, laser means any device which can be modified to generate or amplify electromagnetic radiation in the optical radiation wavelength range primarily by a process of controlled stimulated emissions.
(4) The maximum permissible exposure levels to non-heat-treated optical radiation are set out in Annex 2 to this Regulation.
(5) The maximum permitted exposure values to radiation emitted by laser are set out in Annex 3 to this Regulation.
(K § 35 and 36 of Act No. 258 / 2000 Coll.)
The inclusion of lasers in classes shall be carried out according to the technical standard governing the safety of the laser devices (3) (hereinafter referred to as the technical standard).
Technical documentation data necessary for health protection
(K § 35 and 36 of Act No. 258 / 2000 Coll.)
Each laser shall be accompanied by the following technical documentation:
(a) the wavelength of laser radiation and the type of laser active environment; If they are lasers emitting radiation with more wavelength, all radiated wavelength shall be reported;
b) laser radiation generation mode, continuous, impulse or impulse with high repetition frequency;
(c) the diameter of the beam of radiation at the laser output and its vertigo, for the converging beam also its smallest diameter,
(d) for lasers generating radiation
1. in continuous mode, the greatest radiant flow,
2. in impulse mode radiant energy in one pulse, longest and shortest duration of one pulse, largest and smallest repetitive pulse frequency,
3. in impulse mode with high repetitive frequency data as in point 2 and the largest mean radiant flux,
(e) the classification of the laser into class;
(f) data on factors other than radiation arising from laser operation which could adversely affect working conditions or health;
(g) instructions for correct installation and installation, including construction and spatial requirements;
(h) operating instructions in both normal and emergency situations, maintenance instructions, and, where necessary, important warnings such as a prohibition on the detection of a cover for lasers equipped with a housing or hazard warning resulting from the observation of a beam by optical aids;
(i) the production number of the laser and the year of its manufacture, the business name or the name and address of the manufacturer, if any, if any, or the name, surname or business name and place of business of the manufacturer, if any, of the natural person.
Detection and evaluation of exposure to optical radiation
(K § 35 and 36 of Act No. 258 / 2000 Coll.)
(1) The determination of the level of optical radiation shall be carried out on the basis of measurements made by an authorized person (4) or by calculation according to the relations referred to in Annexes 2 and 3 to this Regulation.
(2) Evaluation of working conditions associated with exposure to optical radiation includes data on:
(a) the level, wavelength and duration of exposure to artificial sources of optical radiation;
(b) possible effects on the health and safety of workers resulting from the interaction between optical radiation and photosensitisers;
(c) any indirect effects such as temporary glare, explosion or fire;
(d) availability of equipment to reduce exposure to optical radiation;
(e) conclusions of national health surveillance checks;
(f) the number of optical radiation devices from artificial sources;
(g) the classification of a laser in accordance with technical standard (3) and any artificial source of optical radiation which could cause occupational health damage, similar to that of a laser classified in accordance with technical standard (3), to class 3B or 4, as well as data from manufacturers of optical radiation sources.
Minimum occupational health measures associated with exposure to optical radiation
(K § 35 and 36 of Act No. 258 / 2000 Coll.)
(1) If the risk assessment indicates that the permissible exposure limits of optical radiation may be exceeded, the employer must take the following measures:
(a) propose a working procedure to reduce the risk of exposure to optical radiation;
(b) ensure that the emission of optical radiation is reduced by technical measures by shielding or other blocking devices;
(c) ensure appropriate maintenance programmes for the installation;
(d) ensure the spatial layout of the workplace so as to ensure that the risk arising from exposure to optical radiation is reduced;
(e) to ensure appropriate personal protective equipment;
(f) affix safety marks to the workplace in accordance with the specific legislation (5).
(2) The employer must ensure that workers are shown to be informed of the results of the evaluation, measurement or calculations of the level of exposure to optical radiation.
(3) The employer must provide training for staff
(a) a way to recognise the harmful effects of optical radiation;
(b) reporting health problems;
(c) procedures to minimise the risks associated with exposure to optical radiation;
(d) the correct use of personal protective equipment.
FINAL PROVISIONS
Repeal
Government Decree No. 480 / 2000 Coll., on Health Protection against Non-Ionising Radiation, is repealed.
Efficacy
This Regulation shall enter into force on 30 April 2008.
Prime Minister:
Ing. Topolánek v. r.
Minister for Health:
Dr. Julinek, MBA v. r.
Příloha č. 1
Annex No 1 to Decree No 1 / 2008 Coll.
Maximum permissible values and reference values
1. The maximum permissible values for modified current density induced in the central nervous system by an electrical and / or magnetic field with a frequency from 0 Hz to 10 MHz are set out in Table 1.
Table 1
(a) The maximum absolute value of modified current density in the central nervous system shall not exceed the maximum permissible value at any time; in the other parts of the hull, the modified current density shall not exceed five times the maximum permissible value specified in Table 1 if the frequency exceeds 1 Hz.
* Modified current density Jmod is defined as current density, i.e. current flowing perpendicular to a flat area with a content of 100 mm2 divided by the content of this area, which is modified by a filter with a frequency characteristic β + j2XBabe of 2 µm · αα + j2µm, where α = 2000µs-1, β = 7 s-1 and j is an imaginary unit, i.e. j = ---1.
The maximum permissible specific absorption power (SAR) values are set out in Table 2. These maximum levels apply to the overall absorption of all the components of the electromagnetic field present in the body's tissues at a frequency interval of between 100 kHz and 10 GHz.
Table 2
| Měrný absorbovaný výkon (SAR)b) - nejvyšší přípustné hodnoty | |||
|---|---|---|---|
| Platí pro frekvence od 100000 Hz do 1010 Hz | Měrný absorbovaný výkon - SAR - průměrovaný přes kterýkoli šestiminutový interval a celé tělo | SAR průměrovaný přes kterýkoli šestiminutový interval a pro kterýchkoli 10 ga) tkáně s výjimkou rukou, zápěstí, chodidel a kotníků | SAR průměrovaný přes kterýkoli šestiminutový interval a pro kterýchkoli 10 g a) tkáně, zápěstí, chodidel a kotníků |
| zaměstnanci | 0,4 W/kg | 10 W/kg | 20 W/kg |
| ostatní osoby | 0,08 W/kg | 2 W/kg | 4 W/kg |
(a) 10 g of tissue listed in Table 2 should be selected in cube shape, not as a flat body on the body surface.
(b) For the exposure of persons to pulses of less than 30 μs at a frequency of 300 MHz to 10 GHz, it is recommended to introduce an additional limit of 10 mJ / kg averaged for 10 g of tissue for specific absorbed energy.
The averaging time for specific absorbed power is 6 minutes. In the case of short-term exposure (less than 6 minutes), the maximum permissible value of the specific absorbed power is therefore not exceeded if an inequality for employees is met
Kg-1
and for others inequality
IUPAC Name
SARi is the specific absorbed output at the ith exposure in W · kg-1 and these are the duration of the ith exposure in minutes.
3. The maximum permissible values for the radiant flux density of the electromagnetic wave from the frequency interval from 10 GHz to 300 GHz, affecting the body or part thereof are set out in Table 3.
Table 3
| Hustota zářivého toku S * – nejvyšší přípustné hodnoty | |||
|---|---|---|---|
| Zaměstnanci | Ostatní osoby | ||
| frekvence ƒ [Hz] | S [W.m-2] | frekvence ƒ [Hz] | S [W.m-2] |
| > 1010 – 3.1011 | 50 | > 1010 – 3.1011 | 10 |
The averaging time for frequencies of 10 GHz to 300 GHz is Tst = 1,92.1011 / Ih1,05; Ih is in hertz, Tst in minutes. S is the mean radiant flow density of 20 cm2 of any part of the body of the exposed natural person. The maximum mean S over 1 cm2 of exposed surface shall not exceed 20 times the values given in Table 3.
4. The reference levels for the intensity of the electrical and magnetic fields (magnetic induction) and for the density of the luminous flux, as specified in Tables 4 to 9, shall apply to fields not disturbed by the presence of persons in the area under consideration. If the field is strongly non-homogeneous, either the field intensity averaged over the area corresponding to the position of the spine or averaged over the area corresponding to the head position of the exposed natural person shall be compared with the reference level or the value taken in the geometric centre of that area for comparison with the reference level. Failure to exceed the contact current reference value shall be detected either by direct measurement of the contact current with the relevant natural person or by measurement of the current by a resistor imitating the impedance of the human body.
Unless explicitly stated otherwise, the specified reference levels shall be in the effective values of the relevant quantities.
Table 4
| Referenční úrovně intenzity elektrického pole E – nepřetržitá expozice | |||
|---|---|---|---|
| Zaměstnanci | Ostatní osoby | ||
| frekvence ƒ [Hz] | E [V.m-1] | frekvence ƒ [Hz] | E [V.m-1] |
| < 1 | – a) | < 1 | – a) |
| 1 – 8 | 20000 | 1 – 8 | 10000 |
| 8 – 25 | 20000 | 8 – 25 | 10000 |
| 25 – 820 | 5.105/ƒ | 25 – 800 | 2,5.105/ƒ |
| 50 | 10000 | 50 | 5000 |
| 820 – 3.103 | 610 | 800 – 3.103 | 2,5.105 /ƒ |
| 3.103 – 65.103 | 610 | 3.103 – 150.103 | 87 |
| 65.103 – 106 | 610 | 150.103 – 106 | 87 |
| 106 – 107 | 610.106/ƒ | 106 – 107 | 87.103/ƒ0,5 |
| 107 – 4.108 | 61 | 107 – 4.108 | 28 |
| 4.108 – 2.109 | 3.10-3.ƒ0,5 | 4.108 – 2.109 | 1,375.10-3.ƒ0,5 |
| 2.109 – 3.1011 | 137 | 2.109 – 3.1011 | 61 |
(a) the static electric field reference level is not established; However, when staying in a strong static electrical field, the effect of an unpleasant feeling caused by an electrical charge induced on the body surface should be reduced and discharges from the body surface avoided.
If the magnetic field is present at the same time, the relations referred to in point 5 must be used for comparison with the reference value.
Table 5
| Referenční úrovně pro magnetickou indukci B – nepřetržitá expozice | |||
|---|---|---|---|
| Zaměstnanci | Ostatní osoby | ||
| frekvence ƒ [Hz] | B[T] | frekvence ƒ [Hz] | B[T] |
| < 1 | 0,28 * | 0,056 * | |
| 1 – 8 | 0,2 /ƒ2 | 1 – 8 | 0,04 /ƒ2 |
| 8 – 25 | 0,025 /ƒ | 8 – 25 | 0,005/ƒ |
| 25 – 820 | 25.10-3 /ƒ | 25 – 800 | 0,005/ƒ |
| 50 | 500.10-6 | 50 | 100.10-6 |
| 820 – 3.103 | 30,7.10-6 | 800 – 3.103 | 6,25.10-6 |
| 3.103 – 65.103 | 30,7.10-6 | 3.103 – 150.103 | 6,25.10-6 |
| 65.103 – 106 | 2/ƒ | 150.103 – 106 | 0,92 /ƒ |
| 106 – 107 | 2/ƒ | 106 – 107 | 0,92 /ƒ |
| 107 – 4.108 | 0,2.10-6 | 107 – 4.108 | 0,092.10-6 |
| 4.108 – 2.109 | 10-11/ƒ0,5 | 4.108 – 2.109 | 4,6.10-12. ƒ0,5 |
| 2.109 – 3.1011 | 0,45.10-6 | 2.109 – 3.1011 | 0,20.10-6 |
* amplitude
For exposure by hands or feet only, reference values may be increased indirectly in proportion to the linear dimension of the exposed part of the body to the linear dimension of the torso.
If the electrical field is present at the same time, the relations referred to in point 5 must be used for comparison with the reference value.
Table 6
* This variable is only applicable to the gradual wave. The reference levels for E and B listed in Tables 4 and 5 shall be used in the reactive source zone.
* * In the frequency interval from 10 GHz to 300 GHz, the luminous flux density is the highest permissible value. The averaging time for frequencies of 10 GHz to 300 GHz is Ts = 1,92.1011 / --1,05; the averaging time is in hertz, the averaging time in minutes.
5. Field exposure with several frequencies
For the assessment of the exposure situation by reference to the reference levels found in an electric and / or magnetic field with more than one frequency, separate direct stimulation shall be considered to be applied over a frequency interval of 0 Hz to 10 MHz and the thermal action of the field shall be applied over a frequency interval of 100 kHz to 300 GHz.
Electrical stimulation caused by the density of induced electrical current in the tissue does not exceed the reference values if they meet the observed levels of fields of inequality:
ste 1 Hz1 MHz EiEL, i + MZ1 MHz Eia ≤ 1
and
ste 1 Hz65 kHz BjBL, j + dost r > 65 kHz10 MHz Bjb ≤ 1.
Ei indicates the intensity of the electric field with a frequency i,
EL, i - reference level of electrical field intensity for the ith frequency,
Bj - magnetic induction with a frequency j,
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Regulation Information
| Citation | Government Decree No. 1 / 2008 Coll., on Health Protection against Non-Ionising Radiation |
|---|---|
| Regulation Type | - |
| Author | - |
| Collection | Code of Laws |
| Date of Promulgation | 09.01.2008 |
|---|---|
| Effective from | 30.04.2008 |
| Effective until | - |
| Status | Valid |
The regulation text is for informational purposes only.
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