GB 28232-2020 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB 28232-2020 | English | 225 |
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Hygienic requirements for ozone disinfector
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| GB 28232-2011 | English | 150 |
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Safety and sanitation standard for ozone generator
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GB 28232-2020: Hygienic requirements for ozone disinfector---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB28232-2020
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 11.080
C 50
Replacing GB 28232-2011
Hygienic requirements for ozone disinfector
Issued on. APRIL 09, 2020
Implemented on. NOVEMBER 01, 2020
Issued by. State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative references... 5
3 Terms and definitions... 6
4 Raw material requirements... 7
5 Technical requirements... 9
6 Application scope... 14
7 Method of use... 14
8 Testing method... 17
9 Transportation and storage... 20
10 Nameplate and instruction manual... 20
Appendix A (Normative) Ozone concentration determination method... 22
Appendix B (Normative) Ozone output determination method... 25
Appendix C (Normative) Ozone power consumption determination method.. 27
1 Scope
This standard specifies the raw material requirements, technical requirements,
application scope, use methods, inspection methods, transportation and
storage, nameplates and instruction manual for use of ozone disinfectors.
This standard applies to ozone disinfectors that generate ozone through
dielectric barrier discharge, ultraviolet radiation, electrolysis.
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) are applicable to this standard.
GB 5749 Standards for drinking water quality
GB/T 5750.10 Standard examination methods for drinking Water -
Disinfection by-products parameters
GB/T 15436 Ambient air - Determination of nitrogen oxides - Saltzman
method
GB 17988 Safety and sanitation requirements for disinfecting tableware
cabinet
GB/T 18202 Hygienic standard for ozone in indoor air
GB 18466 Discharge standard of water pollutants for medical organization
GB/T 19258 UV germicidal lamp
GB 28235 Safety and sanitary standard for ultraviolet appliance of air
disinfection
GB 30689 Hygienic requirements for washer-disinfectors employing
chemical disinfection for thermolabile endoscopes
GB/T 38497 Evaluation method of endoscopic disinfection effect
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Ozone generation unit
It is the most basic component that produces ozone.
3.2
Ozone generator
A device necessary to generate ozone through dielectric barrier discharge,
ultraviolet radiation or electrolysis.
3.3
Ozone disinfector
The whole devices necessary to use the ozone generated by the ozone
generator with gas or water as a carrier for disinfection.
3.4
Ozone-water mixing equipment
A device that mixes ozone gas and water to dissolve ozone in water.
3.5
Monitoring device
A device for monitoring the concentration of ozone in water/air and manually
or automatically regulating the concentration of ozone, including on-site
monitoring and control equipment, on-site data collectors and data
processing centers.
4 Raw material requirements
4.1 Ozone generator
4.1.1 Dielectric barrier discharge type
4.1.1.1 Medium and materials
The medium and electrode materials of the ozone generating unit shall use
ozone-resistant materials, to ensure long-term stable operation under
discharge conditions and in an ozone environment.
4.1.1.2 Air supply source
4.1.1.3 Cooling system
4.1.2 Ultraviolet radiation type
4.1.2.1 The ultraviolet lamp tube shall be made of quartz glass or raw materials
with equivalent ultraviolet transmittance.
4.1.2.2 The initial ozone output rate of the ozone ultraviolet germicidal lamp
shall not be less than 80% of the indicated value, in line with the requirements
of GB/T 19258.
4.1.3 Electrolysis type
4.2 Ozone disinfector components
The parts contacting ozone shall use ozone-resistant materials, to ensure long-
term stable operation in an ozone environment.
4.3 Ozone-water mixing device
4.3.1 Ozone-water mixing elements with low energy consumption and high
dissolved gas efficiency shall be used; the dissolved gas efficiency shall be ≥
50%.
4.3.2 A ozone-water separation device shall be installed to separate
undissolved gaseous ozone; an ozone tail gas decomposition device shall be
installed to decompose the separated ozone gas.
4.4 Monitoring device
5 Technical requirements
5.1 Dielectric barrier discharge type ozone disinfector
5.1.1 Basic working conditions
The ozone disinfector shall be able to be used continuously under the
conditions of ambient temperature 5 °C ~ 45 °C, relative humidity ≤ 85%,
cooling water inlet temperature ≤ 35°C.
5.1.2 Performance requirements
5.1.3 By-products
5.1.4 Ozone leakage
The ozone disinfector is used under human conditions; it shall be airtight when
using the ozone gas for sterilization. The ozone leakage in the surrounding
environment shall be ≤ 0.1 mg/m3.
5.1.5 Residual ozone
After one working cycle of ozone disinfection under airtight conditions, the
residual amount of ozone gas in the airtight room shall be ≤ 0.16 mg/m3.
5.2 Ultraviolet radiation type ozone disinfector
5.2.1 Basic working conditions
Under the conditions of ambient temperature 5 °C ~ 45 °C, relative humidity ≤
85%, power supply voltage 220 V ± 22 V, power supply frequency 50 Hz ± 1
Hz, the ozone disinfector shall be able to be used continuously.
5.2.2 Performance requirements
5.2.3 Leakage
5.3 Electrolysis type ozone disinfector
5.3.1 Basic working conditions
Same as 5.2.1.
5.3.2 Performance requirements
5.4 Disinfection effect
5.4.1 Air disinfection
When the ozone disinfector is used for air disinfection, in accordance with the
method of use specified in the product instruction manual, it is turned on until
the time specified in the product instruction manual, then the microbial killing
indicators shall meet the requirements of Table 3.
5.4.2 Water disinfection
When the ozone disinfector is used for water disinfection, in accordance with
the method of use specified in the product instruction manual, it is turned on to
the time specified in the product instruction manual, then the microbial killing
indicators shall meet the requirements of Table 4.
5.4.3 Disinfection of tableware and food processing pipelines
5.4.3.1 Disinfection of tableware with ozone tableware disinfection cabinet shall
meet the requirements of GB 17988.
5.4.3.2 The disinfection of tableware and food processing pipelines with ozone
water shall meet the requirements of Table 5.
5.4.4 Disinfection of medical equipment and supplies
5.4.5 Surface disinfection of object
When the ozone disinfector is used for object disinfection, follow the method of
use specified in the product instruction manual, to start the disinfector to the
time specified in the product instruction manual; the microbial killing indicators
shall meet the requirements of Table 7.
6 Application scope
It is suitable for disinfection of air, water, tableware, food processing pipelines,
medical equipment, medical supplies and surface of objects.
7 Method of use
7.1 Air disinfection
7.1.1 According to the volume of the space to be disinfected and the applicable
volume requirements in the product’s instruction manual, select the applicable
ozone air disinfector model.
7.2 Water disinfection
7.2.1 It can be used for disinfection of drinking water, water for diagnosis and
treatment in medical institutions (non-injection water), sewage, swimming pool
water, central air conditioning cooling water, condensate water in public places.
7.2.2 According to the type of water to be disinfected, select the corresponding
specifications of ozone water disinfector models according to relevant
standards.
7.2.5 When used in hospital sewage treatment, the general ozone input amount
is 10 mg/L ~ 15 mg/L; the sewage is fully exposed to ozone for 12 min ~ 15 min
before being discharged.
7.3 Disinfection of tableware and food processing pipelines
7.3.1 According to the instruction manuals of the tableware and food processing
pipelines to be sterilized, select the applicable ozone disinfector (machine)
model.
7.3.2 When using an ozone disinfection cabinet to disinfect tableware, put the
tableware that needs to be disinfected after washing and drying into the cabinet;
close the cabinet door; turn on the power; start the disinfection button, the
disinfector starts to work until this disinfection process is completed, which is
the end of disinfection treatment. During disinfection, the ozone concentration
in the disinfection cabinet shall generally be ≥ 20 mg/L, the relative humidity ≥
70%, the disinfection time shall be ≥ 30 min.
7.4 Disinfection of medical equipment and supplies
7.4.1 Disinfection of general medical equipment and supplies
7.4.2 Disinfection of bed unit
7.4.2.1 According to the instruction manual of bed unit and its supplies to be
disinfected, select the applicable ozone bed unit disinfector (machine) model.
7.4.3 Endoscope disinfection
7.5 Surface disinfection of object
7.5.1 According to the size of the surface area of the object to be disinfected
and the requirements of the product instruction manual, select the applicable
ozone surface disinfector model.
7.5.2 When using ozone gas to disinfect the surface of an object, it shall close
the doors and windows; turn on the power, the indicator light is on; press the
switch or remote control;
8 Testing method
8.1 Dielectric barrier discharge type ozone disinfector
8.1.1 Performance requirements
8.1.1.1 Ozone concentration of ozone disinfector
It is determined according to the method specified in Appendix A.
8.1.1.4 Tuning performance
Change the intake air flow and power of the ozone disinfector, to determine the
ozone output according to the method in 8.1.1.2; test the tuning range of the
ozone output.
8.1.1.5 Variation
After the ozone disinfector runs for 4 hours, under the designed rated power
and intake air flow conditions, at least 5 determinations (time average
distribution) of ozone concentration and power consumption are made within 2
hours; the difference between the maximum value and the minimum value in
the measured value is divided by average value; the result obtained is the
variable value.
8.1.1.6 Life
8.1.2 By-products
8.1.2.1 Nitrogen oxides
It is determined according to the method specified in GB/T 15436.
8.1.2.2 Bromate
It is determined according to the method specified in GB/T 5750.10.
8.1.2.3 Formaldehyde
It is determined according to the method specified in GB/T5750.10.
8.1.3 Ozone leakage
It is determined according to the method specified in GB/T18202.
8.1.4 Residual ozone
After the ozone disinfector has finished a working cycle, open the door of the
disinfector according to the instruction manual; use an ozone concentration
meter to measure the ozone concentration in the cavity of the disinfector and
the surrounding environment. Before the test, it shall determine the original
ozone concentration in the air;
8.2 Ultraviolet radiation type ozone disinfector
8.2.1 Performance requirements
8.2.2 Leakage
8.2.2.1 UV leakage
After turning on the ozone disinfector for 5 minutes to stabilize, at a distance of
30 cm from the outer surface of the disinfector, use an ultraviolet radiation
illuminance meter to detect the ultraviolet radiation illuminance.
8.2.2.2 Ozone leakage
It is determined according to the method specified in GB/T 18202.
8.2.3 Residual ozone
It is determined according to the method of 8.1.4.
8.3 Electrolysis type ozone disinfector
8.3.1 Performance requirements
8.4 Disinfection effect
The endoscope is determined according to the method specified in GB/T 38497;
the tableware disinfection cabinet is determined according to the method
specified in GB 17988.
9 Transportation and storage
9.1 Transportation
It can be transported by general means of transportation; it shall take rain-proof
and earthquake-proof measures during transportation.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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