Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
All technical contents of this standard are compulsory.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB 28235-2011 Safety and sanitary standard for ultraviolet appliance for air disinfection, and the following main technical changes have been made with respect to GB 28235-2011:
——The "Scope" is modified;
——The definition and name of "ultraviolet germicidal lamp" are modified, and the definitions of "ultraviolet disinfection", "ultraviolet appliance of disinfection", "upper flat shot ultraviolet appliance for air disinfection", "ultraviolet effective dose", "ultraviolet appliance for water disinfection" and "ultraviolet appliance for surface disinfection” are added.
——The contents "specifications and classifications" and "names and models" that are not covered by the safety and hygienic requirements of product are deleted.
——The raw material requirements are modified and are given in separate clauses, with those closely related to validity and safety indexes of the product changed as compulsory clauses;
——The technical requirements are modified, with the safety requirements for electrical appliances deleted.
——The contents of the application scope are modified;
——The contents of "Precautions” are modified and merged into the clause "Nameplate and operation instructions” together with "Labels and operation instructions”;
——The requirements related to ultraviolet appliance for water disinfection and ultraviolet appliance for surface disinfection are added;
——The following annexes are added: Annex A "Measurement method of ultraviolet intensity", Annex B "Method for lifetime test", Annex C "Simulated field test for air disinfection", Annex D "Field test for air disinfection", Annex E "Laboratory microbiological killing test for water disinfection", Annex F "Simulated field test and field test for water disinfection", Annex G "Laboratory microbiological killing test for surface disinfection" and Annex H "Simulated field test and field test for surface disinfection".
This standard was proposed by and is under the jurisdiction of the National Health Commission of the People's Republic of China.
The previous edition of this standard is as follows:
——GB 28235-2011.
Hygienic requirements for ultraviolet appliance of disinfection
1 Scope
This standard specifies the raw material requirements, technical requirements, application scope, application methods, inspection methods, marking and packaging, transport and storage, nameplate and operating instructions of ultraviolet appliance of disinfection.
This standard is applicable to ultraviolet appliance of disinfection with C frequency-range ultraviolet (with the wavelength range of 200nm~280nm) as the sterilizing agent.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 191 Packaging - Pictorial marking for handling of goods
GB 5749 Standards for drinking water quality
GB/T 5750.2 Standard examination methods for drinking water - Collection and preservation of water samples
GB/T 5750.12 Standard examination methods for drinking water - Microbiological parameters
GB 17625.1 Electromagnetic compatibility - Limits - Limits for harmonic current emissions (equipment input current ≤ 16 A per phase)
GB/T 17743 Limits and methods of measurement of radio disturbance characteristics of electrical lighting and similar equipment
GB 17988 Safety and sanitation requirements for disinfecting tableware cabinet
GB/T 18202 Hygienic standard for ozone in indoor air
GB/T 18204.9 Methods of microbiological examination for water in swimming pool - Determination of aerobic bacterial count
GB/T 18204.10 Methods of microbiological examination for water in swimming pool - Determination of Coliform bacteria
GB 18466 Discharge standard of water pollutants for medical organization
GB/T 19258 Ultraviolet germicidal lamp
GB 19510.1 Lamp controlgear - Part 1: General and safety requirements
GB/T 19837 Ultraviolet (UV) disinfection equipment for urban water and wastewater engineering
GB 37488 Hygienic indicators and limits for public places
GBZ/T 189.8 Measurement of physical agents in workplace - Part 8: Noise
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
ultraviolet lamp
special electric light source directly using ultraviolet ray for disinfection
3.2
ultraviolet disinfection
disinfection method which is used to kill pathogenic microorganisms by making use of the principle that the genetic material of the pathogenic microorganisms that absorb the ultraviolet energy with a wavelength between 200nm~280nm will mutate and cause the cells to stop dividing and reproducing
3.3
ultraviolet appliance of disinfection
device that uses an ultraviolet lamp as the light source and ultraviolet ray emitted by the lamp as the sterilizing agent to disinfect pathogenic microorganisms on the transmission medium
3.4
ultraviolet appliance for air disinfection
ultraviolet appliance of disinfection that uses the combination of ultraviolet lamps, filter screen, fans and ballasts for air disinfection
Note: The filter screen and fan do not have the function of sterilizing agent.
3.5
upper flat shot ultraviolet appliance for air disinfection
ultraviolet appliance for air disinfection which is installed ≥2.1m above the ground at the upper part or on the top of the internal wall and emits the ultraviolet ray parallel to the ground for air disinfection
3.6
ultraviolet appliance for water disinfection
ultraviolet appliance of disinfection which is composed of ultraviolet lamp, quartz socket tube, ballast and other components sealed in the container and used for water disinfection
3.7
ultraviolet appliance for surface disinfection
disinfection instrument that uses ultraviolet lamps, power adapters and other components to disinfect the surface of objects
3.8
ultraviolet intensity
amount of ultraviolet energy received per unit area per unit time in the direction perpendicular to the transmission direction of ultraviolet ray
Note: It is usually expressed in μW/cm2 or W/m2.
3.9
ultraviolet effective dose
ultraviolet dose with which the ultraviolet appliance of disinfection is able to kill the microorganisms within a certain operating time
Note: Also known as the biodo simetry dose of ultraviolet appliance of disinfection.
3.10
disinfection cycle
whole process for the ultraviolet appliance of disinfection to perform a disinfection operation and meet the disinfection requirements
3.11
disinfection time
time for ultraviolet appliance of disinfection to carry out disinfection treatment under the working conditions specified in this standard
3.12
effective lifetime of ultraviolet lamp
cumulative ignition time when the ultraviolet intensity of the a new ultraviolet lamp is reduced to 70% specified in this standard
3.13
cyclic wind volume
volume of air circulating through the ultraviolet appliance for air disinfection per hour under standard air conditions
Note: It is expressed in m3/h.
4 Raw material requirements
4.1 Ultraviolet appliance for air disinfection
4.1.1 Ultraviolet lamp
4.1.1.1 Raw material
The ultraviolet lamp shall be made of quartz glass or raw material with the ultraviolet transmittance not inferior to that of quartz glass.
4.1.1.2 Ultraviolet intensity
The initial ultraviolet intensity of double- and single-capped ultraviolet lamps shall not be less than 93% of the values specified in Tables 1 and 2, respectively, and the intensity of other ultraviolet lamps shall meet the requirements of relevant standards.
Table 1 Initial specified ultraviolet intensity for double-capped ultraviolet lamp
4.1.1.3.1 It shall have good starting performance.
4.1.1.3.2 Electronic ballasts should be adopted, and they shall meet the requirements of relevant standards such as GB/T 15144 or GB 19510.1.
4.1.1.4 Other technical performances
Other technical performances shall meet the requirements of GB/T 19258 and other relevant standards.
4.1.2 Requirements for other raw materials
4.1.2.1 The filter material of the filter screen shall be able to block ultraviolet leakage. For filter screen made of fiber filter material, no dust shall fall off.
4.1.2.2 The parts and components as well as enclosure (except for the side and rear plate of the cabinet, which shall be made of sheet metal parts) of the ultraviolet appliance for air disinfection should be made of flame-retardant, ultraviolet radiation-resistant, and corrosion-resistant materials, and the appliance should not be equipped with an air velocity regulator.
4.1.2.3 Mute universal wheel should be adopted for the mobile ultraviolet appliance for air disinfection.
4.1.2.4 The upper flat shot ultraviolet appliance for air disinfection shall be equipped with human body induction protection device.
4.2 Ultraviolet appliance for water disinfection
4.2.1 Ultraviolet lamp
4.2.1.1 Raw material
It shall meet the requirements of 4.1.1.1.
4.2.1.2 Ultraviolet intensity
It shall meet the requirements of 4.1.1.2.
4.2.1.3 Starting performance
It shall meet the requirements of 4.1.1.3.
4.2.1.4 Other technical performances
Other technical performances shall meet the requirements of GB/T 19258 and other relevant standards.
4.2.2 Requirements for other raw materials
4.2.2.1 Other materials of the ultraviolet appliance for water disinfection that are in contact with water shall meet the requirements of GB/T 17219, among which the quartz socket tube shall have a ultraviolet transmittance of no less than 90% per millimeter of quartz thickness.
4.2.2.2 The ultraviolet ray intensity meter (if any) shall be provided with a verification certificate.
Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Raw material requirements 5 Technical requirements 6 Application scope 7 Application methods 8 Inspection method 9 Marking and packaging 10 Transport and storage 11 Nameplate and operation instructions Annex A (Normative) Measurement method for ultraviolet intensity Annex B (Normative) Method for lifetime test Annex C (Normative) Simulated field test for air disinfection Annex D (Normative) Field test for air disinfection Annex E (Normative) Laboratory microbiological killing test for water disinfection Annex F (Normative) Simulated field test and field test for water disinfection Annex G (Normative) Laboratory microbiological killing test for surface disinfection Annex H (Normative) Simulated field test and field test for surface disinfection
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
All technical contents of this standard are compulsory.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB 28235-2011 Safety and sanitary standard for ultraviolet appliance for air disinfection, and the following main technical changes have been made with respect to GB 28235-2011:
——The "Scope" is modified;
——The definition and name of "ultraviolet germicidal lamp" are modified, and the definitions of "ultraviolet disinfection", "ultraviolet appliance of disinfection", "upper flat shot ultraviolet appliance for air disinfection", "ultraviolet effective dose", "ultraviolet appliance for water disinfection" and "ultraviolet appliance for surface disinfection” are added.
——The contents "specifications and classifications" and "names and models" that are not covered by the safety and hygienic requirements of product are deleted.
——The raw material requirements are modified and are given in separate clauses, with those closely related to validity and safety indexes of the product changed as compulsory clauses;
——The technical requirements are modified, with the safety requirements for electrical appliances deleted.
——The contents of the application scope are modified;
——The contents of "Precautions” are modified and merged into the clause "Nameplate and operation instructions” together with "Labels and operation instructions”;
——The requirements related to ultraviolet appliance for water disinfection and ultraviolet appliance for surface disinfection are added;
——The following annexes are added: Annex A "Measurement method of ultraviolet intensity", Annex B "Method for lifetime test", Annex C "Simulated field test for air disinfection", Annex D "Field test for air disinfection", Annex E "Laboratory microbiological killing test for water disinfection", Annex F "Simulated field test and field test for water disinfection", Annex G "Laboratory microbiological killing test for surface disinfection" and Annex H "Simulated field test and field test for surface disinfection".
This standard was proposed by and is under the jurisdiction of the National Health Commission of the People's Republic of China.
The previous edition of this standard is as follows:
——GB 28235-2011.
Hygienic requirements for ultraviolet appliance of disinfection
1 Scope
This standard specifies the raw material requirements, technical requirements, application scope, application methods, inspection methods, marking and packaging, transport and storage, nameplate and operating instructions of ultraviolet appliance of disinfection.
This standard is applicable to ultraviolet appliance of disinfection with C frequency-range ultraviolet (with the wavelength range of 200nm~280nm) as the sterilizing agent.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 191 Packaging - Pictorial marking for handling of goods
GB 5749 Standards for drinking water quality
GB/T 5750.2 Standard examination methods for drinking water - Collection and preservation of water samples
GB/T 5750.12 Standard examination methods for drinking water - Microbiological parameters
GB/T 10682 Double-capped fluorescent lamps - Performance specifications
GB/T 14294-2008 Central-station air handling units
GB/T 15144 A.C. supplied electronic ballasts for tubular fluorescent lamps - Performance requirements
GB 15982 Hygienic standard for disinfection in hospitals
GB/T 17219 Standard for safety evaluation of equipment and protective materials in drinking water system
GB/T 17262 Single-capped fluorescent lamps - Performance specification
GB 17625.1 Electromagnetic compatibility - Limits - Limits for harmonic current emissions (equipment input current ≤ 16 A per phase)
GB/T 17743 Limits and methods of measurement of radio disturbance characteristics of electrical lighting and similar equipment
GB 17988 Safety and sanitation requirements for disinfecting tableware cabinet
GB/T 18202 Hygienic standard for ozone in indoor air
GB/T 18204.9 Methods of microbiological examination for water in swimming pool - Determination of aerobic bacterial count
GB/T 18204.10 Methods of microbiological examination for water in swimming pool - Determination of Coliform bacteria
GB 18466 Discharge standard of water pollutants for medical organization
GB/T 19258 Ultraviolet germicidal lamp
GB 19510.1 Lamp controlgear - Part 1: General and safety requirements
GB/T 19837 Ultraviolet (UV) disinfection equipment for urban water and wastewater engineering
GB 37488 Hygienic indicators and limits for public places
GBZ/T 189.8 Measurement of physical agents in workplace - Part 8: Noise
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
ultraviolet lamp
special electric light source directly using ultraviolet ray for disinfection
3.2
ultraviolet disinfection
disinfection method which is used to kill pathogenic microorganisms by making use of the principle that the genetic material of the pathogenic microorganisms that absorb the ultraviolet energy with a wavelength between 200nm~280nm will mutate and cause the cells to stop dividing and reproducing
3.3
ultraviolet appliance of disinfection
device that uses an ultraviolet lamp as the light source and ultraviolet ray emitted by the lamp as the sterilizing agent to disinfect pathogenic microorganisms on the transmission medium
3.4
ultraviolet appliance for air disinfection
ultraviolet appliance of disinfection that uses the combination of ultraviolet lamps, filter screen, fans and ballasts for air disinfection
Note: The filter screen and fan do not have the function of sterilizing agent.
3.5
upper flat shot ultraviolet appliance for air disinfection
ultraviolet appliance for air disinfection which is installed ≥2.1m above the ground at the upper part or on the top of the internal wall and emits the ultraviolet ray parallel to the ground for air disinfection
3.6
ultraviolet appliance for water disinfection
ultraviolet appliance of disinfection which is composed of ultraviolet lamp, quartz socket tube, ballast and other components sealed in the container and used for water disinfection
3.7
ultraviolet appliance for surface disinfection
disinfection instrument that uses ultraviolet lamps, power adapters and other components to disinfect the surface of objects
3.8
ultraviolet intensity
amount of ultraviolet energy received per unit area per unit time in the direction perpendicular to the transmission direction of ultraviolet ray
Note: It is usually expressed in μW/cm2 or W/m2.
3.9
ultraviolet effective dose
ultraviolet dose with which the ultraviolet appliance of disinfection is able to kill the microorganisms within a certain operating time
Note: Also known as the biodo simetry dose of ultraviolet appliance of disinfection.
3.10
disinfection cycle
whole process for the ultraviolet appliance of disinfection to perform a disinfection operation and meet the disinfection requirements
3.11
disinfection time
time for ultraviolet appliance of disinfection to carry out disinfection treatment under the working conditions specified in this standard
3.12
effective lifetime of ultraviolet lamp
cumulative ignition time when the ultraviolet intensity of the a new ultraviolet lamp is reduced to 70% specified in this standard
3.13
cyclic wind volume
volume of air circulating through the ultraviolet appliance for air disinfection per hour under standard air conditions
Note: It is expressed in m3/h.
4 Raw material requirements
4.1 Ultraviolet appliance for air disinfection
4.1.1 Ultraviolet lamp
4.1.1.1 Raw material
The ultraviolet lamp shall be made of quartz glass or raw material with the ultraviolet transmittance not inferior to that of quartz glass.
4.1.1.2 Ultraviolet intensity
The initial ultraviolet intensity of double- and single-capped ultraviolet lamps shall not be less than 93% of the values specified in Tables 1 and 2, respectively, and the intensity of other ultraviolet lamps shall meet the requirements of relevant standards.
Table 1 Initial specified ultraviolet intensity for double-capped ultraviolet lamp
Nominal power/W 4 6 8 13 15 18 30 36 60 75 100 150 250 320 400 550 750 1,000
Ultraviolet intensity /(μW/cm2) 9 15 22 35 50 62 100 135 190 250 305 400 650 720 900 1,150 1,300 1,730
Table 2 Initial specified ultraviolet intensity for single-capped ultraviolet lamp
Nominal power/W 5 7 9 11 18 24 36 55 75 95 150
Ultraviolet intensity /(μW/cm2) 9 16 22 33 51 65 110 150 170 304 400
4.1.1.3 Starting performance
4.1.1.3.1 It shall have good starting performance.
4.1.1.3.2 Electronic ballasts should be adopted, and they shall meet the requirements of relevant standards such as GB/T 15144 or GB 19510.1.
4.1.1.4 Other technical performances
Other technical performances shall meet the requirements of GB/T 19258 and other relevant standards.
4.1.2 Requirements for other raw materials
4.1.2.1 The filter material of the filter screen shall be able to block ultraviolet leakage. For filter screen made of fiber filter material, no dust shall fall off.
4.1.2.2 The parts and components as well as enclosure (except for the side and rear plate of the cabinet, which shall be made of sheet metal parts) of the ultraviolet appliance for air disinfection should be made of flame-retardant, ultraviolet radiation-resistant, and corrosion-resistant materials, and the appliance should not be equipped with an air velocity regulator.
4.1.2.3 Mute universal wheel should be adopted for the mobile ultraviolet appliance for air disinfection.
4.1.2.4 The upper flat shot ultraviolet appliance for air disinfection shall be equipped with human body induction protection device.
4.2 Ultraviolet appliance for water disinfection
4.2.1 Ultraviolet lamp
4.2.1.1 Raw material
It shall meet the requirements of 4.1.1.1.
4.2.1.2 Ultraviolet intensity
It shall meet the requirements of 4.1.1.2.
4.2.1.3 Starting performance
It shall meet the requirements of 4.1.1.3.
4.2.1.4 Other technical performances
Other technical performances shall meet the requirements of GB/T 19258 and other relevant standards.
4.2.2 Requirements for other raw materials
4.2.2.1 Other materials of the ultraviolet appliance for water disinfection that are in contact with water shall meet the requirements of GB/T 17219, among which the quartz socket tube shall have a ultraviolet transmittance of no less than 90% per millimeter of quartz thickness.
4.2.2.2 The ultraviolet ray intensity meter (if any) shall be provided with a verification certificate.
Contents of GB 28235-2020
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Raw material requirements
5 Technical requirements
6 Application scope
7 Application methods
8 Inspection method
9 Marking and packaging
10 Transport and storage
11 Nameplate and operation instructions
Annex A (Normative) Measurement method for ultraviolet intensity
Annex B (Normative) Method for lifetime test
Annex C (Normative) Simulated field test for air disinfection
Annex D (Normative) Field test for air disinfection
Annex E (Normative) Laboratory microbiological killing test for water disinfection
Annex F (Normative) Simulated field test and field test for water disinfection
Annex G (Normative) Laboratory microbiological killing test for surface disinfection
Annex H (Normative) Simulated field test and field test for surface disinfection
