Decree No. 6 / 2003 Coll.
Decree laying down the hygiene limits of chemical, physical and biological indicators for the indoor environment of accommodation rooms of certain buildings
Valid
Effective from 01.07.2003
6
DECLARATION
of 16 December 2002
laying down health limits for chemical, physical and biological indicators for the indoor environment of accommodation rooms of certain buildings
According to Section 108 (1) of Act No. 258 / 2000 Coll., on the Protection of Public Health and on the amendment of certain related laws (hereinafter referred to as "the Act"), the Ministry of Health provides for the implementation of Section 13 (1) of the Act:
Subject matter
This decree sets out the health limits of chemical, physical and biological indicators for the indoor environment of living rooms (1) the construction of education and education facilities, (2) universities, schools in nature, the construction of rehabilitation facilities, the construction of medical facilities for preventive care, social care institutions, accommodation facilities, (3) the construction of shops (4) and the assembly of more people. 5)
Basic concepts
For the purposes of this decree:
(a) biological indicators affecting human health in the internal environment of structures - micro-organisms and mite allergens;
b) mite allergen - digestive enzymes of mites of the Pyroglyphidae family contained in their digestive tract and excreted together with excretion into the environment,
(c) guanine - a substance contained in mite excrements whose presence in the environment detects the presence of mites;
d) microclimatic conditions - conditions of temperature, humidity and air flow in the internal environment of buildings;
(e) micro-organisms - only bacteria and fungi (microscopic fibrous sponges) grown under test conditions laid down by Czech technical standards;
f) temperature conditions - air temperature ti (° C) and resulting temperature of the spherical thermometer tg (° C),
(g) internal average temperature - arithmetic mean of temperature values, recorded evenly over the period of stay;
h) air conditioning - ventilation to ensure that the air quality, temperature and humidity are adjusted to the room,
(i) standard conditions - air temperature 20 ° C and air pressure 101,32 kPa;
(j) potential exposure - duration of the intended stay of persons given for the purpose of using the space;
(k) variability in concentration of the test substance - changes in concentration depending on time and space.
Microclimatic conditions
(1) Operation in the accommodation rooms shall be ensured in such a way as to comply with the permitted microclimatic conditions set out in Annex No 1, except for extremely cold or extremely warm days. A particularly cold day shall be considered the day on which the lowest outdoor air temperature reached below -15 ° C. A particularly warm day shall be considered the day on which the maximum outdoor air temperature is above 30 ° C.
(2) In the case of exceptionally cold days, when the indoor average temperature falls below 16 ° C, the operation of the accommodation rooms shall be stopped if the indoor temperature cannot be increased by heating to the resulting temperature as specified in Annex 1.
(3) When using radiant heating, the intensity of grooming at the head of a person shall not exceed 200 W.m-2.
(4) The accommodation rooms must have direct or forced ventilation.
(5) The quantity of air exchanged in the ventilated space shall be determined by reference to the number of persons and activity carried out in such a way as to comply with the microclimatic conditions and hygiene limits of chemicals and dust.
(6) Forced ventilation shall be used where direct ventilation is insufficient to remove the resulting pollutants and heat-humidity loads of space.
(7) The exhaust air ducts to the outdoor environment shall be placed in such a way that the contaminated air is not sucked back into the surrounding indoor spaces.
(8) Air conditioning must not be a source of any contamination.
Chemical factors and dust
(1) The limit concentrations of chemical factors and dust in the internal environment of buildings are determined as one hour and are set out in Annex 2.
(2) The requirements for the quality of the internal environment of buildings are deemed to be met if the mean value of the hourly concentration of the test substance at the measured interval does not exceed, under standard conditions, the limit concentration specified in Annex 2. The measured interval affects the potential exposure and variability of the concentration of the test substance.
Limits on the presence of micro-organisms
(1) An increase in mold on the walls and surface of the living rooms is not allowed. In cases of dispute, the finding confirmed by sampling and culture on the breeding ground carried out in accordance with the CSN ISO 7954 Microbiology shall be considered to be evidence of mould growth on the surface. General instructions for determining the total number of moulds and yeast. The technique of counting colonies cultured at 25 ° C. "
(2) Requirements for the quality of the internal environment of buildings, except for areas requiring increased requirements for its purity, are considered to be met if the concentration of bacteria of 500 colonies forming units per m3 of air (KTJ.m-3 air) and the concentration of moulds greater than 500 KTJ.m-3 air when determining the concentration of micro-organisms by active intake of air by means of an aeroscope does not exceed the standard operating procedure in Annex 3 and the culture on the nutrient soil carried out in accordance with "CSN ISO 4833 Microbiology. General guidance for the determination of the total number of micro-organisms. The technique of counting colonies cultured at 30 ° C." and "CSN ISO 7954 Microbiology. General instructions for determining the total number of moulds and yeast. The technique of counting colonies cultured at 25 ° C."
Limits for mites
The upper limit value for one gram of dust drained from beds, upholstered furniture and carpets in the inner building environment is 2 μg of mite allergens or 0,6 mg of guanine.
Efficacy
This Decree shall take effect on 1 July 2003, with the exception that, for works set up before 1 July 2003, the provisions of paragraphs 1 to 4 shall become effective on 1 January 2005.
Minister:
Dr. Součková v. r.
Příloha č. 1
Annex No 1 to Decree No 6 / 2003 Coll.
Microclimatic conditions
Table 1: Requirements for the resulting temperature of the spherical thermometer
| Typ pobytové místnosti1) | Minimální teplota tg (st. C) |
|---|---|
| Učebny2) | 19 |
| Zařízení sociální péče | 20 |
| Zařízení sociální péče – pokoj klienta | 20 |
| Zařízení sociální péče – prostory sloužící k pobytu klienta | 20 |
| Objekty | 19 |
| Objekty | 19 |
| Objekty | 20 |
| Zdravotnická zařízení3) | 20 |
| Zdravotnická zařízení – pokoj pacienta | 20 |
| Zdravotnická zařízení – prostory sloužící k pobytu pacienta | 20 |
| Zdravotnická zařízení – prostory sloužící pro neonatologické pacienty | 22 |
| Zdravotnická zařízení – prostory sloužící pro pacienti s onkologickým onemocněním | 22 |
Table 2: Air flow rate in living rooms 3)
| teplé období roku | 0,16-0,25 m·s-1 |
| chladné období roku | 0,13-0,20 m·s-1 |
Table 3: Relative humidity in living rooms 3)
| teplé období roku | nejvýše 65 % |
| chladné období roku | nejméně 30 % |
Table 4: Temperature and amount of air to be carried for sanitary facilities at the accommodation rooms
| Minimální teplota vzduchu ti (st. C) | Množství odváděného vzduchu za hodinu | |
|---|---|---|
| Umývárny | 19 | 30 m3 na 1 umyvadlo |
| Sprchy | 19 | 35 – 110 m3 na 1 sprchu |
| WC | 15 | 50 m3 na 1 mísu 25 m3 na 1 pisoár |
Explanatory notes:
1) If the space type is not specified in Table 1, the requirement of the space type shall be based on a similar activity character.
2) Workshops in buildings which are not educational and educational establishments.
3) If there are no other requirements for living rooms in medical facilities given by performance or treatment process.
Příloha č. 2
Annex No 2 to Decree No 6 / 2003 Coll.
Limit concentration of chemical indicators in internal building environment
Table 5: Limit hourly concentrations of chemical indicators and dust
| Ukazatelé | jednotka | limit 4) |
|---|---|---|
| oxid dusičitý | μg·m-3 | 100 |
| frakce prachu PM10 1) | μg·m-3 | 150 |
| frakce prachu PM2,5 2) | μg·m-3 | 80 |
| oxid uhelnatý | μg·m-3 | 5000 |
| ozón | μg·m-3 | 100 |
| azbestová a minerální vlákna 3) | počet vláken·m-3 | 1000 |
| amoniak | μg·m-3 | 200 |
| benzen | μg·m-3 | 7 |
| toluen | μg·m-3 | 300 |
| suma xylenů | μg·m-3 | 200 |
| styren | μg·m-3 | 40 |
| etylbenzen | μg·m-3 | 200 |
| formaldehyd | μg·m-3 | 60 |
| trichloretylen | μg·m-3 | 150 |
| tetrachloretylen | μg·m-3 | 150 |
Explanatory notes:
1) PM10 dust fraction - dust particles with a predominant particle size of 10 μm diameter that pass through a special selective filter with 50% efficiency.
2) PM2,5 dust fraction - dust particles with a predominant particle size of 2,5 μm, which pass through a special selective filter with 50% efficiency.
3) Filament diameter < 3 μm, fibre length ≥ 5 μm, fibre length to diameter ratio > 3: 1.
4) The limits are set for concentrations of substances referring to standard conditions.
Příloha č. 3
Annex No. 3 to Decree No. 6 / 2003 Coll.
Standard aerospace air intake operating procedure
Determination of concentrations of bacteria and fungi in indoor air shall be carried out in the indoor environment after 20 minutes of thorough ventilation and after an additional one hour of window closure. In the case of air-conditioning spaces with no ventilation capability, sampling is required in a non-operating environment, not later than 20 minutes after the end of operation. The removal is carried out by the authorised person, the presence and movement of other persons in the monitored interior is excluded if the determination of the concentration of bacteria and fungi is not carried out in connection with a particular activity or the presence of humans from that environment cannot be excluded.
Two air withdrawals shall be carried out in the centre of the room in the inhalation zone 160 cm above the ground. The time between each sampling period shall be at least 10 to 30 minutes. A different location (location of instrument, altitude) may be selected for sampling according to the purpose of the examination. This shall be recorded in the measurement report.
The upper part of the apparatus is cleaned between the individual samples by a napkin of the disinfectant or a swab soaked in the disinfectant solution. Between air sampling in different interiors, the instrument sampling head is sterilised by autoclaving (15 minutes at 121 ° C).
The properly marked petri dishes are stored as soon as possible in the thermostat in which they are incubated. One day up. Cooling portable cables are used to transfer dishes between the sampling point and the laboratory.
1) § 3 (n) of Decree No. 137 / 1998 Coll., on general technical requirements for construction.
2) Paragraph 7 (1) of Act No. 258 / 2000 Coll., on the Protection of Public Health and on the amendment of certain related laws.
3) § 3 (g) of Decree No. 137 / 1998 Coll.
4) § 3 (f) of Decree No. 137 / 1998 Coll.
5) § 3 (e) of Decree No. 137 / 1998 Coll.
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Regulation Information
| Citation | Decree No. 6 / 2003 Coll., laying down the hygiene limits of chemical, physical and biological indicators for the indoor environment of certain buildings |
|---|---|
| Regulation Type | - |
| Author | - |
| Collection | Code of Laws |
| Date of Promulgation | 15.01.2003 |
|---|---|
| Effective from | 01.07.2003 |
| Effective until | - |
| Status | Valid |
The regulation text is for informational purposes only.
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