Government Decree No. 88 / 2004 Coll.
Government Regulation amending Government Decree No. 502 / 2000 Coll., on the Protection of Health from the Negative Effects of Noise and Vibrations
Valid
Effective from 01.04.2004
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88
GOVERNMENT REGULATION
of 21 January 2004
amending Government Regulation No 502 / 2000 Coll., on the protection of health against adverse effects of noise and vibration
The Government mandates, pursuant to § 108 (3) of Act No. 258 / 2000 Coll., on the Protection of Public Health and on the amendment of certain related laws, as amended by Act No. 274 / 2003 Coll., (hereinafter referred to as "the Act") to implement Sections 30, 32 and 34 (1) of the Act and under § 134c (7) of the Labour Code:
Government Decree No 502 / 2000 Coll., on the protection of health against adverse effects of noise and vibration, is amended as follows:
1. In Paragraph 1 (1), the first sentence is replaced by the following: "This Regulation establishes maximum permissible noise and vibration values for workplaces, protected outdoor space, protected indoor building spaces and protected outdoor spaces for buildings and the method of measuring and evaluating these values."
2. Paragraph 1 (2) reads as follows:
"(2) This Regulation shall not apply to:
(a) noise from the normal use of the apartment;
(b) voice manifestations of humans and animals,
(c) musical manifestations and noise from the activities of persons in public spaces, except in the case of noise caused by production or other business activities of persons;
(d) noise and vibration within the means of transport, with the exception of their operation,
(e) isolated noise events which, by their low frequency or short-term exposure, cannot directly endanger public health;
(f) noise and vibration caused by the execution of rescue and disposal operations. ';
3.
Basic concept
For the purposes of this Regulation, the maximum permissible value of noise or vibration shall be the sanitary limit laid down for the places of residence of persons with regard to the protection of their health from the adverse effects of noise or vibration. ';
4. The heading "Noise at the workplace 'is inserted above Section 3.
5. In Article 3 (1), the words "the exchange level of noise exposure 'shall be inserted after the words" LEX, 8h'.
6. Paragraph 3 (3) reads as follows:
"(3) The assessment of the average weekly noise exposure normalised on the nominal eight-hour working day may only be used in workplaces where the working time is not evenly distributed during the working week or where the noise at work changes significantly during the week, but the individual weekly noise exposure does not differ significantly. '
7. In Article 4 (2), the words "with a proportional width 'shall be inserted after the words" in the frequency bands'.
8. In Article 5 (1), "A 'is inserted after" equivalent sound pressure levels'.
9. In Article 5, paragraphs 3 and 4 are deleted.
Paragraph 5 shall become paragraph 3.
10. in Article 5 (3), the words "LAIeq, 8h" shall be inserted after the words "eight-hour working time."
11. in Article 5, the following paragraph 4 is added:
"(4) If the noise at the workplace is not composed solely of impulse noise but consists of a combination of impulse and steady or variable noise, it is expressed as variable noise. The noise load is also expressed. In this case, if a significant proportion of the impulse noise component is demonstrated to be equivalent to the sound level A LAeq, T (i.e. LAIeq, T - LAeq, T > 5,0 dB), the maximum permissible equivalent sound pressure level A determined in accordance with § 3 shall be reduced by 5 dB. '
12. in Article 6 (1) and Article 7 (1), the word "equivalent" is inserted after the word "expressed," and the text "lt" is replaced by "Lteq, T."
13. in Paragraph 8 (1):
"(1) The values of infrasound at the workplace are expressed by equivalent sound pressure levels G of LGeq, T, or if the frequency composition of the infrasound is to be determined by the Lteq sound pressure levels in 1 to 16 Hz third octave bands. The low-frequency noise values shall be expressed by equivalent Lteq, T sound pressure levels in third octave bands 20 to 40 Hz. ';
14. in § 8 (5), first and second sentences, the text "lt" is replaced by "Lptmax."
15.
Maximum permitted exchange exposure values for noise for a non-eight-hour daily noise exposure period T in minutes shall be determined by:
(a) the maximum permitted levels for eight-hour working hours at LAeq noise, 8h shall be added to the KT correction to be determined according to the relation
KT = 10 log (480 / T), / dB /,
(b) the fixed maximum permissible value for the eight-hour working hours in the ESA noise, 8h shall be multiplied by the kT factor determined according to the relation
kT = 480 / T /, / - /. '
16. In Section 10, the text "(A) 'is deleted.
17. The following heading is inserted above Section 11: "Noise in protected outdoor space, in protected indoor space of buildings and in protected outdoor space of buildings'.
18. In Section 11, the words "in building for housing and civil engineering 'are replaced by the words" in protected indoor buildings'.
19. In the first sentence of Article 11 (1), the words "inside buildings for housing and civil engineering 'are deleted.
20. In the second sentence of Article 11 (1), the words "continuous and successive 'shall be inserted after the words" eight'.
21. In the first sentence of Article 11 (2), the words "inside buildings for housing and civil equipment" shall be deleted and the word "air" shall be inserted after the word "penetrating."
22. In the last sentence of Paragraph 11 (2), the words' speech or music 'are replaced by' electroacoustic reinforced speech '.
23. In the first sentence of Article 11 (3), the words "within buildings for housing and civil equipment 'are deleted.
24. In the second sentence of Article 11 (3), the words "speech or music 'are replaced by the words" electroacoustic reinforced speech'.
25. In Paragraph 11 (3), third sentence, the word "stationary" shall be deleted.
26. in Article 11 (3), the last sentence is deleted;
27. In Article 11, the following paragraph 4 is inserted after paragraph 3:
"(4) When building modifications are made on the basis of a building permit or a declaration within the building, a correction of + 15 dB to the maximum permissible sound pressure level A determined in accordance with paragraph 2 shall be permitted on working days from 7 to 21 hours. The maximum permissible value of noise from the construction activity shall be calculated for a period of less than 14 hours as set out in Annex 5 to this Regulation. The first and second sentences shall not apply to medical and social care establishments where works are carried out in the operation of such facilities. ';
Paragraphs 4 and 5 shall become paragraphs 5 and 6.
28. Paragraph 11 (5), including footnote 3, reads:
"(5) The median time of reversing in school non-musical classrooms and common rooms for preschool children must not exceed 1,0 s, in sports halls, gyms and corridors of school and medical buildings 2.0 s. For new structures, superstructures and harbours, the values of the optimum reverberation time according to the relevant technical standard.3)
3) ČSN 730527 Acoustics - Design in the field of spatial acoustics - Cultural spaces - School spaces - Public spaces. "
29. In the last sentence of Article 11 (6), the figure "5 'is replaced by" 6' and the word "protected 'is inserted before the word" outdoor'.
30. Paragraph 12, including the title, reads:
Maximum permissible noise levels in protected outdoor space and in protected outdoor areas of buildings
(1) Noise values are expressed in equivalent sound pressure level A LAeq, T. During the day, it shall be fixed for the eight continuous and consecutive loudest hours, at night for the loudest hour, for traffic noise on public roads and for air traffic noise shall be fixed for the whole day and night hours. High energy impulse noise is expressed by the sound exposure level C LCE of individual impulses.
(2) The maximum permissible equivalent sound pressure level A (excluding air traffic noise and high energy impulse noise) is determined by the sum of the basic noise level LAeq, T = 50 dB and the corresponding correction for the daytime or night time and place referred to in Annex 6 to this Regulation. For high impulse noise, add additional correction -12 dB. If the noise contains a significant tone component or if it has a distinct information character, such as electroacoustic amplified speech, further correction -5 dB is added.
(3) The maximum permissible LCRE sound exposure level for individual high energy noise impulses is 128 dB. The sound exposure level LCRE shall be calculated for each high energy noise pulse as set out in Annex 6 to this Regulation.
(4) Maximum equivalent sound level permitted A from air traffic shall be determined by the sum of the basic noise levels LAeq, T = 65 dB and the corresponding correction for the daytime and night hours and place referred to in Annex 7 to this Regulation.
(5) The correction + 10 dB to the maximum permissible equivalent sound pressure level A determined in accordance with paragraph 2 shall be permitted for the implementation of new structures and changes to completed structures between 7 and 21 hours. The maximum permissible value of noise from the construction activity shall be calculated for a period of less than 14 hours as set out in Annex 6 to this Regulation.
(6) If it is technically demonstrated that, in the existing installation after all the means of its noise protection have been exhausted, it is technically not possible to comply with the provisions of paragraphs 1 to 4, it is necessary to ensure that the necessary protection of the indoor space of buildings from noise is ensured in such a way as to comply with the conditions laid down in Section 11. In doing so, the possibility of their necessary ventilation must be maintained. ';
31. A heading is inserted above Paragraph 13, which reads: "Vibrations."
32. in Paragraph 13 (1):
"(1) Human vibration in workplaces, buildings with residential and residential rooms and total vertical vibrations of less than 0,5 Hz are expressed
(a) the average weighted level of vibration acceleration Law in dB or the weighted effective value of vibration acceleration aew in m.s-2;
(b) average vibration acceleration levels in the third octave Lat frequency bands in dB or effective vibration acceleration values in the third octave frequency bands in m.s-2;
(c) the average cumulative weighted level of acceleration by the vibration of Lvw in dB or the aggregated weighted effective value of the acceleration by avw in m.s-2 in the case of segmental vibration transmitted on the hand. ';
33.
Maximum permissible values for total vertical and horizontal vibrations
(1) The maximum permitted acceleration levels of the total vertical vibrations in the third octave bands of the Latp applicable for the eight-hour working time and the maximum permitted effective acceleration values of the total vertical vibrations in the third-octave bands of the aetc valid for the eight-hour working time are set out in Annex 9 to this Regulation.
(2) The maximum permissible weighted acceleration of the total vertical vibration of the Lawp applicable for eight-hour working hours shall be 110 dB. Maximum weighted effective value of vertical vibration acceleration aetp valid for eight-hour working hours is 0,315 m.s-2.
(3) The maximum permitted acceleration levels of the total horizontal vibrations in the third octave bands of the Latp applicable for the eight-hour working time and the highest effective acceleration values of the total horizontal vibrations in the third octave bands of the aetp valid for the eight-hour working time are set out in Annex 9 to this Regulation.
(4) The maximum permissible weighted acceleration of the total horizontal vibration of the Lawp applicable for eight-hour working hours is 107 dB. The maximum permissible weighted effective value of the acceleration of total horizontal vibrations aetp valid for eight-hour working hours is 0,22 m.s-2. '.
Article 34 (15) shall be deleted;
35. The following Section 18a is inserted after Section 18, including the title:
Determination of average vibration exposure over multiple working days
(1) If averaging multiple-working-day vibration exposures is required and, for example, exposure to vibration normalised to the nominal working week of 40 h is considered, the average Law level may be determined over the entire period of time from the Law for each day according to the relation:
Law = 10 log 15, Ii = 1n100,1Lawi, dB
n... the number of working days during the working week.
The average effective value of multiple-day vibration acceleration shall be determined by the same procedure.
aew = 15 dost r = 1naew2i, m.s-2
(2) Assessment by average weekly vibration exposure normalised on a nominal eight-hour working day may only be used in workplaces where working time is not evenly distributed or where vibrations at the workplace vary significantly during the week, but the individual weekly vibration exposure does not differ significantly. '
36. A heading is inserted above Section 19, which reads "Vibrations in the protected inner spaces of buildings'.
37. In Section 19, the words "in buildings for housing and in civil works' are replaced by the words" in protected indoor areas of buildings'.
38. in Article 19 (1) and (4), the words "in housing and civil engineering" shall be replaced by the words "in protected indoor areas."
39. in Paragraph 19 (2), the words "in buildings" shall be replaced by the words "in protected space."
40. In Article 19 (3), the words "for housing and civil engineering buildings' are replaced by the words" in protected indoor areas'.
41. In Paragraph 21, the words "results equal to the standard method 'are replaced by the words" results comparable to those of the standard method. The measurement of noise and vibration shall indicate the measurement uncertainties to be applied in the assessment of the measured values.';
42.
"Annex No. 1 to Government Decree No. 502 / 2000 Coll.
Explanation of terms, definition of quantities
1. The audible sound is a gradual longitudinal wave in a flexible environment, the frequency of which is between 16 Hz and 20 kHz.
2. High frequency sound is audible sound with distinct frequency components in the frequency band above 8 kHz.
3. Ultrasound is a gradual longitudinal wave in a flexible environment whose frequency is above the audible frequency band.
4. Low frequency sound is audible sound with significant frequency components in the frequency band of less than 100 Hz, in workplaces less than 50 Hz.
5. Infrasvuk is a gradual longitudinal wave in a flexible environment whose frequency is below the audible frequency band.
6. Noise with significant tone components is noise in which a third octave frequency spectrum exceeds the sound pressure level of the adjacent third octave bands by more than 5 dB. Music and singing are also considered a tone sound.
7. Constant noise is noise whose sound pressure level does not change by more than 5 dB at a given location depending on time.
8. The variable noise is a noise whose sound pressure level changes at a given location by more than 5 dB depending on time.
9. The impulse is a one-time sound action, less than 0,2 s, exceeding by at least 10 dB the background noise.
10. Impulse noise is a noise consisting of one pulse or sequence of impulses; when the duration of each pulse is less than 0,2 seconds and the impulses follow each other at intervals exceeding 0,01 seconds.
11. High-impulse noise is composed of impulses in the outdoor area, the source of which is shooting, of hand weapons, metal forging, beating, nail shooting, buchars, impact piles, eccentric presses, pneumatic hammers and collectibles, impacts when moving wagons or similar sources.
12. High-energy impulse noise is composed of impulses in the open air, the source of which is explosions in quarries and mines, sonic bursts, demolition and industrial processes with the help of explosives, heavy weapons fire, explosive tests and other sources of explosions whose equivalent mass of TNT exceeds 25 g and similar sources.
13. The sound pressure level Lp is expressed in dB and is determined by the relationship
Lp = 20 log (p / po) dB
where
p is the instantaneous sound pressure in Pa,
After the reference sound pressure in Pa,
po = 2.10-5 Pa.
14. The sound pressure level in the third octave band Lpt is the sound pressure level specified in the frequency band of one third of the octave.
15. The peak sound pressure level Lp peak is the highest instantaneous sound pressure level in a given time interval.
16. Maximum sound pressure level Lp max is the highest sound pressure level
17. Equivalent sound pressure level Leq, T is determined by the relationship
Leq, T = 10 log 1 / T-0Tp (t) p02dt dB,
where appropriate
Leq, T = 10 log 1 / T-0T100,1 L (t) dt dB,
where
p (t) is the instantaneous sound pressure in Pa,
L (t) is the instantaneous sound pressure level in dB,
T is the time to which the equivalent level refers.
EXPLANATORY
(a) Time The T used for direct measurement or for calculation of Leq, T is selected to give results that are representative of the entire working time or noise period.
(b) For steady-state noise the level of which does not change, L eq, T is numerically identical to the sound pressure level L p.
18. The sound exposure ET is determined by the relationship
ET = kg0Tp2 (t) dt Pa2.s
where
T is the period covered by the exposure to sound in s,
p (t) is the instantaneous sound pressure in Pa.
19. The sound exposure level of L ET is determined by the relationship
L ET = 10.log (ET / E0) dB
where
E 0 is the reference exposure of sound in Pa2.s
E 0 = 4.10-10 P2 s
where appropriate
LET = Leq, T + 10.log (T / T0) dB
where
T is the time v s to which the equivalent level refers
T 0 is the reference time interval of 1 s
20. The frequency weighting of the A and C filters according to IEC 651 and G according to ČSN ISO 7196 is used for the expression of health effects. The weighing used must be used in the variable designation, e.g.:
L pA, L pAmax, L pC peak, L Aeq, T, L CE.
21. Exchange noise exposure level L EX, 8h is given by the relationship
LEX, 8h = L Aeq, Te + 10 log (Te / To), dB
where is
L Aeq, Te - equivalent sound pressure level A for Te time
Te - effective duration of the working day, i.e. daily duration of personal noise exposure of the worker,
This - reference time (8 h = 28800 s).
22. Weekly noise exposure level L EX, w is determined by the relationship
L EX, w = 10 log 1 / 5)
where (L EX, 8h) k are the values of L EX, 8h for each of the working days of the working week considered.
23. The reversing time is the time needed to drop the sound pressure level in the enclosed space by 60 dB after switching off the sound source of the specified frequency or frequency band.
24. Medium reversing time Tstr, reversing time averaged from values in octave bands from 250 Hz to 4000 Hz or in third octave bands from 200 Hz to 5000 Hz.
25. Main roads are highways, first and second roads and local roads of 1st and 2nd class.
26. The old noise load is a noise level in the outdoor area caused by noise from traffic on public roads, which existed in the area at 1.1.2001.
27. Measurement uncertainty is an estimate of the interval of values assigned to the measurement result, which is claimed to be within the correct value.
28. The shock (mechanical shock) is a sudden change that determines the vibration quantities that ignites transient excesses in the system.
29. The shock is a one-off event in which the position of the mechanical system changes in a short time. The tremor is characterised by a sudden change in the determining variable.
30. The determining vibration variable is a variable that describes vibration. The vibration acceleration level La and the effective value of the vibration acceleration ae are used as a determining variable for the purpose of hygienic vibration assessment.
31. Level of vibration acceleration La is determined by the relationship
La = 20 log (a / a0) dB
where
and is the instantaneous vibration acceleration in m.s-2
a0 is the reference level of vibration acceleration in m.s.-2
a0 = 10-6 m.s-2.
32. Effective value of vibration acceleration ae is determined by the relationship
ae = 1T --0Ta2 (t) dt m.s-2
where
a (t) is the instantaneous acceleration in m.s-2
T is the time for which the effective acceleration value in s.
33. The weighted vibration acceleration level Law is the vibration acceleration level corresponding to the frequency correction for the mode and conditions of transmission and direction of vibration. It is expressed in dB.
34. The combined weighted acceleration level is given by the vector sum of the weighted effective acceleration values in three orthogonal axes.
35. Hand-transmitted vibration is a vibration that is transmitted from a vibrating handle or other object held by the hand, especially on the hand of the exposed person (e.g. vibration transmitted to the working hand of hand-held mechanical tools, vibration transmitted from handlebars or steering wheel).
36. Total vibrations are vibrations that are transmitted to a seated or standing person from a vibrating seat, floor or platform by causing vibration of the whole body. The horizontal or vertical total vibrations are distinguished.
The vibration transmitted to the occupant can only be assessed as a total when the vibration of frequencies higher than 20 Hz per spine and head is prevented (e.g. by cushion). In this case, vibrations parallel to the longitudinal axis of the body shall be assessed in a manner applicable to vertical vibrations and vibrations in directions perpendicular to the longitudinal axis of the body shall be assessed in a manner applicable to horizontal vibrations.
If the transmission of intense vibration with a frequency greater than 20 Hz is not prevented directly to the spine and head, the vibration transmitted to the occupant shall be considered as a vibration transmitted in a special way.
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Regulation Information
| Citation | Government Regulation No. 88 / 2004 Coll., amending Government Regulation No. 502 / 2000 Coll., on the Protection of Health against the Negative Effects of Noise and Vibrations |
|---|---|
| Regulation Type | - |
| Author | - |
| Collection | Code of Laws |
| Date of Promulgation | 25.02.2004 |
|---|---|
| Effective from | 01.04.2004 |
| Effective until | - |
| Status | Valid |
The regulation text is for informational purposes only.
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