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HJ 817-2018: Technical specifications for operation and quality control of ambient air quality automated monitoring system for particulate matter (PM10 and PM2.5)
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Technical specifications for operation and quality control of ambient air quality automated monitoring system for particulate matter (PM10 and PM2.5)
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HJ 817-2018
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Basic data | Standard ID | HJ 817-2018 (HJ817-2018) | | Description (Translated English) | Technical specifications for operation and quality control of ambient air quality automated monitoring system for particulate matter (PM10 and PM2.5) | | Sector / Industry | Environmental Protection Industry Standard | | Classification of Chinese Standard | Z15 | | Word Count Estimation | 15,142 | | Date of Issue | 2018-08-13 | | Date of Implementation | 2018-09-01 | | Older Standard (superseded by this standard) | HJ/T 193-2005 Partial | | Regulation (derived from) | Ministry of Ecology and Environment Announcement No. 32 of 2018 | | Issuing agency(ies) | Ministry of Ecology and Environment | HJ 817-2018: Technical specifications for operation and quality control of ambient air quality automated monitoring system for particulate matter (PM10 and PM2.5)
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Technical specifications for operation and quality control of ambient air quality automated monitoring system for particulate matter (PM10 and PM2.5)
National Environmental Protection Standard of the People's Republic
Partially replacing HJ/T 193-2005
Ambient air particulate matter (PM10 and PM2.5) continuous
Automatic monitoring system operation and quality control technical specifications
Technical specifications for operation and quality control of ambient air quality
Automated monitoring system for particulate matter (PM10 and PM2.5)
Published on.2018-08-13
2018-09-01 implementation
Ministry of Ecology and Environment released
i directory
Foreword.ii
1 Scope 1
2 Normative references 1
3 Terms and Definitions..1
4 Composition and requirements of continuous automatic monitoring system for ambient air particulate matter. 2
5 System daily operation and maintenance requirements 3
6 Quality Assurance and Quality Control.5
7 Data validity judgment 7
Appendix A (normative appendix) particle flow automatic monitoring instrument flow calibration method..8
Appendix B (informative appendix) Operation and Quality Control Record Form 9
Foreword
Standardize the environment for the implementation of the Environmental Protection Law of the People's Republic of China and the Law of the People's Republic of China
The airborne particulate matter (PM10 and PM2.5) continuously monitors the operation and quality control of the system and develops this standard.
This standard specifies the composition, daily operation and maintenance of continuous automatic monitoring system for ambient air particulate matter (PM10 and PM2.5).
Technical requirements such as requirements, quality assurance and quality control, and data validity judgment.
This standard is a revision of the contents of the Technical Specifications for Automatic Monitoring of Ambient Air Quality (HJ/T 193-2005).
This standard was first published in.2005 and this is the first revision. The main contents of the revision are as follows.
-- Increased operational and quality control requirements for continuous automatic monitoring systems for fine particulate matter (PM2.5);
-- Revised the composition and requirements of continuous automatic monitoring system for particulate matter;
-- Revised the daily operation and maintenance requirements of the system, and increased the daily operation, instrument update and parameter adjustment of the system.
Request, remove the requirements for preventive maintenance;
-- Revised the content and requirements for quality assurance and quality control;
-- Revised the content and requirements of the accuracy review;
-- Removed the requirement for data collection frequency and revised the requirements for data validity judgment.
From the date of implementation of this standard, the Technical Specifications for Automatic Monitoring of Ambient Air Quality (HJ/T 193-2005) is related to inhalation.
Particulate matter (PM10) continuous automatic monitoring system operation and quality control content abolished.
The equipment and equipment that have been put into use before the implementation of this standard do not meet the requirements of this standard. When the equipment is updated,
Performed in accordance with the requirements of this standard.
Appendix A of this standard is a normative appendix, and Appendix B is an informative appendix.
This standard is formulated by the Environmental Monitoring Department and the Science and Technology Standards Department.
This standard was drafted. China Environmental Monitoring Center, Suzhou Environmental Monitoring Center Station, Jinan Environmental Monitoring Center Station
And Guangdong Environmental Monitoring Center.
This standard is approved by the Ministry of Ecology and Environment on August 13,.2018.
This standard has been implemented since September 1,.2018.
This standard is explained by the Ministry of Ecology and Environment.
1 Ambient air particulate matter (PM10 and PM2.5) continuously and automatically monitors system operation and
Quality control technical specification
1 Scope of application
This standard specifies the composition, daily operation and maintenance requirements of the continuous automatic monitoring system for ambient air particulate matter (PM10 and PM2.5).
Technical requirements such as quantity assurance and quality control as well as data validity judgment.
This standard applies to all levels of environmental monitoring stations (centres) and other environmental monitoring agencies (including social environmental monitoring agencies) using continuous automatic
Operational management and quality control of monitoring systems for monitoring ambient airborne particulate matter (PM10 and PM2.5).
2 Normative references
The contents of this standard refer to the terms in the following documents. For undated references, the valid version applies to this standard.
GB 3095 Ambient Air Quality Standard
HJ 93 ambient air particulate matter (PM10 and PM2.5) sampler technical requirements and test methods
HJ 618 Determination of ambient air PM10 and PM2.5 gravimetric method
HJ 655 Environmental Air Particulates (PM10 and PM2.5) Continuous Automatic Monitoring System Installation and Acceptance Specifications
3 Terms and definitions
The following terms and definitions apply to this standard.
3.1
Continuous ambient air quality monitoring
Refers to the process of continuous sample collection, processing and analysis of ambient air using continuous automatic monitoring instruments.
3.2
Particulate matter (particle size less than or equal to 10μm) particulate matter (PM10)
Refers to particulate matter in the ambient air with an aerodynamic equivalent diameter of 10 μm or less, also known as inhalable particulate matter.
3.3
Particulate matter (particle size less than or equal to 2.5μm) particulate matter (PM2.5)
Refers to particulate matter in the ambient air having an aerodynamic equivalent diameter of 2.5 μm or less, also called fine particulate matter.
3.4
Particle separate device
A device having a function of separating particles of different particle sizes.
23.5
Audit sampler
A manual particle sampler that is carried to the site for comparison of ambient air particulate matter monitoring instruments.
3.6
Data quality objectives
A qualitative and quantitative description of the data obtained through the data quality goal planning process, which clarifies the purpose of the study and determines the most appropriate
Data collection types and collection conditions to clarify acceptable levels of potential judgment errors.
4 Composition and requirements of continuous automatic monitoring system for ambient air particulate matter
4.1 System composition
The continuous monitoring system for ambient air particulate matter consists of an air quality monitoring substation, a quality assurance laboratory, and a system support laboratory.
4.2 Air Quality Monitoring Substation
4.2.1 Function and composition
Continuous automatic monitoring of ambient air quality and meteorological conditions (including temperature, air pressure, humidity, wind direction, wind speed, etc.), collection,
Process and store monitoring data, and periodically transmit monitoring data and device operating status information to the central computer.
The air quality monitoring substation is mainly composed of substation station, sampling device, monitoring instrument, calibration equipment, data acquisition and transmission equipment, and auxiliary equipment.
Equipment and other components.
The monitoring station and surrounding environment should meet the requirements of HJ 655.
4.2.2 Instrument and equipment configuration
The continuous automatic monitoring system for particulate matter consists of sampling head, sampling tube, sampling pump and instrument host, equipped with temperature, humidity and pressure detection.
, wherein the beta ray particle monitoring instrument should include a dynamic heating system (Dynamic heating system)
The measuring instrument should include a Filtration membrane dynamic measurement system.
4.3 Quality Assurance Laboratory
4.3.1 Main functions
Performing value transfer, calibration and performance audits of monitoring instruments and equipment, and calibrating and performance of monitored monitoring instruments and equipment
test.
4.3.2 Basic requirements
a) The quality assurance laboratory should be sized to ensure that the operator is working properly.
b) A sealed window structure shall be used and a buffer room shall be provided to prevent dust and dirt from entering the laboratory.
c) Temperature and humidity control equipment should be installed so that the laboratory temperature is controlled within 25 °C ± 5 °C and the relative humidity is controlled below 80%.
d) The power supply voltage is 220V and the voltage fluctuation cannot exceed ±10%. The laboratory power supply system should be equipped with power supply overvoltage, overload and leakage
Electrical protection device, the laboratory must have a good grounding circuit, the grounding resistance is ≤ 4Ω.
e) Good ventilation and exhaust vents should be provided to keep the indoor air clean.
f) If a precision balance is to be placed, an independent balance should be provided and the environmental conditions should comply with the relevant requirements.
g) An outdoor experimental platform for particle sampler comparison testing should be provided.
h) The necessary test benches and storage cabinets should be configured.
3i) Multiple air quality monitoring substations can share a quality assurance laboratory.
4.3.3 Instrument and equipment configuration
The quality assurance laboratory shall be equipped with equipment and equipment related to the continuous automatic monitoring of quality and quality control of ambient air particles.
The equipment configuration list is shown in Table 1.
Table 1 List of basic equipment and equipment for quality assurance laboratory
Numbered instrument name technical requirements quantity use
1 Analytical balance calibration index value ≤0.01 mg 1 set
Particulate matter and standard filter
Weighing
2 Flowmeter 0~5 L/min, 1 set, 1 set of laboratory flow reference
3 flow meter 0~5 L/min, 1 level 1 set flow transmission
4 Flowmeter 0~20 L/min, 1 set of 1 laboratory flow reference
5 Flowmeter 0~20 L/min, l-level 1 set flow transmission
6 high precision stopwatch error 0.01 seconds 1 block flow transmission
7 pressure gauge 0.5, resolution ≤ 0.1 kPa 1 block air pressure transmission
8 vacuum gauge level 1 1 gas path check
9 hygrometer 1 level 1 humidity transmission
10 thermometer level 1, resolution 0.1 ° C 1 temperature transfer
11 million meter 1 level 1 voltage transmission
12 PM10 manual sampler meets HJ 93 requirements for 3 accuracy audits
13 PM2.5 manual sampler meets HJ 93 requirements for 3 accuracy audits
4.4 System Support Lab
4.4.1 Main functions
Carry out routine maintenance and maintenance of the monitoring equipment and repair or replace the malfunctioning equipment.
4.4.2 Basic requirements
The system support laboratory should be equipped with power, temperature and humidity control equipment, ventilation and corresponding workbench, storage cabinets, etc. Multiple air
The quality monitoring substation can share a system support laboratory.
4.4.3 Instrument Equipment Configuration
The system support laboratory shall be equipped with equipment testing and maintenance equipment and tools, and shall be equipped with necessary spare monitoring instruments and spare parts.
The number of monitoring instruments used is generally not less than 1/4 of the total number of monitoring instruments in use.
5 system daily operation and maintenance requirements
5.1 Basic requirements
The automatic monitoring equipment for ambient air shall be operated continuously for 365 days (366 days in the following year) and shall be suspended for more than 3 days.
The competent department of the management of the position shall record the case and take effective measures to resume operation in time. If it is necessary to stop the operation, it must be reported in advance to be responsible for the management of the point.
Approved by the competent authority.
4 In the daily operation, due to the failure of the instrument, it is necessary to temporarily use the standby monitoring instrument for monitoring, or to update the monitoring instrument due to equipment scrapping.
It shall be reported to the competent department responsible for the management of the point within one week after the instrument is replaced. Instrument updates must be performed in accordance with HJ 655.
The main technical parameters of the monitoring instrument (including slope/K value, K0 value, intercept, sensitivity, etc.) should be in accordance with the instrument specification and system safety.
The setting values at the time of acceptance check are consistent. If it is necessary to adjust the main technical parameters, parameter adjustment test and instrument performance test should be carried out.
Record the test results and prepare a parameter adjustment test report. The adjustment of the main technical parameters shall be reported to the competent authority responsible for the management of the point.
The indication of the monitoring results shall be implemented in accordance with the relevant requirements of GB 3095.
5.2 Daily maintenance
5.2.1 Daily inspection of monitoring station and auxiliary equipment
The sub-station station and auxiliary equipment should be inspected regularly, and at least once a week. The inspections mainly include.
a) Check whether the temperature in the station room is within the range of 25 °C ± 5 °C, and the relative humidity is kept below 80%. Note should be noted in winter and summer seasons.
If the temperature difference between the inside and outside of the station is concerned, the temperature of the station should be adjusted in time or appropriate temperature control measures should be taken for the sampling tube to prevent sampling due to temperature difference.
Condensed water appeared in the unit.
b) Check if the station exhaust and exhaust device works normally.
c) Check the integrity of the sampling head and sampling tube, and clean the accumulated water in the buffer bottle in time.
d) Whether the working parameters and operating status of each monitoring instrument are normal. The oscillating balance method should also check the instrument measurement noise and oscillation frequency.
Whether the indicators are within the scope specified in the specification.
e) Check if data collection, transmission and network communication are normal.
f) Check whether all operation and maintenance tools, instrument consumables and spare parts are in good condition.
g) Check whether the operation status of auxiliary equipment such as air conditioner and power supply is normal, and check whether the filter net of the station air conditioner is clean, if necessary
Wash it.
h) Check that all fire and safety facilities are in good condition.
i) Weeds and stagnant water around the station should be removed in time.
j) Check if the lightning protection facilities are normal, whether there is rain leakage in the sub-station houses, and whether the weather bar is damaged.
k) Record the inspection status. See Table B.1 for the inspection record table.
5.2.2 Monitoring equipment and equipment routine maintenance
5.2.2.1 Sampling system
Clean the sampling head at least once a month. If there is a heavy pollution process or dusty weather, the sampling head should be cleaned in time after the end of the pollution process;
In the season affected by plant fly and flying insects, the inspection and cleaning frequency of the sampling head should be increased. When cleaning, the sampling head should be completely disassembled and
PM2.5 cutter, cleaned with distilled water or absolute ethanol, completely air-dried or blown dry with a fan and reassembled. Check the seal when assembling.
Sealing situation.
The sampling pipeline should be cleaned at least once a year, and the area with heavy pollution can increase the frequency of cleaning. The sampling tube must be airtight after cleaning
Check and perform sample flow calibration.
5.2.2.2 Monitoring instruments
a) β-ray method instrument
1) Check the operating status and status parameters of the monitoring instrument according to the instrument manual every week.
2) Check the tape every week. Check if the tape position is normal, whether the sampling spot is smooth, even and complete; check the remaining length of the tape,
If the length is insufficient, it should be replaced in advance.
53) Clean the indenter of the beta ray instrument and the pad under the tape once a month, and increase it in the heavily polluted season or after continuous polluted weather.
Cleaning frequency; should be cleaned with a cotton swab and absolute ethanol.
4) Check whether the heating device of the particulate matter monitoring instrument is working normally and whether the heating temperature is normal.
5) Check the clock of the beta ray instrument every month; if the instrument is connected to the data acquisition instrument, check the clock of the data acquisition instrument at the same time.
6) Other maintenance contents specified in the instrument manual.
7) Every inspection and maintenance must be recorded and archived regularly.
b) Oscillating balance instrument
1) Check the operating status and status parameters of the monitoring instrument according to the instrument manual every week.
2) Replace the sampling filter at least once a month. If the filter is used less than 1 month and the load reaches 80%, it should be replaced.
The parts can be replaced as appropriate in advance; the filter should be replaced in strict accordance with the operating procedures and gently pressed to avoid damage to the cone oscillator.
3) Replace the clean air filter in the condenser when replacing the sampling filter and replace the clean air filter at least once a month.
4) Replace the main filter element, bypass filter element and gas water separator filter element every six months. When the pollution is heavy, replace it in time.
Filter element.
5) For the instrument with filter dynamic measuring system, clean the ground state/reference state gas circuit switching valve every year; replace the sample once a year.
Gas dryer; when dehumidification performance decreases, such as when the sample gas dew point temperature is higher than the condenser set point, or set with the condenser
The temperature difference should be less than 2 °C, and the sample gas dryer should be replaced in time.
6) Check the clock of the oscillating balance instrument every month; if the instrument is connected to the data acquisition instrument, check the data acquisition instrument at the same time.
clock.
7) Other maintenance contents specified in the instrument manual.
8) Every inspection and maintenance must be recorded and archived regularly.
5.3 Troubleshooting
The faulty equipment should be inspected and repaired in a targeted manner.
a) Perform fault diagnosis and overhaul according to the requirements of the service manual provided by the instrument manufacturer.
b) For equipment faults that can be diagnosed on site and can be solved by simple replacement of spare parts, they should be repaired and restored as soon as possible.
Repeat normal operation.
c) For instruments that cannot be repaired in the field, they should be sent to the system support laboratory for inspection and maintenance, and used in time.
Monitoring with instruments.
d) The instrument should be calibrated after each troubleshooting.
e) Inspection, calibration and testing should be documented and archived after each troubleshooting.
6 Quality Assurance and Quality Control
6.1 Basic requirements
6.1.1 β-ray method instrument
a) Airway leak detection. According to the instrument manual, the flow leak detection should be carried out once a month, and the leak should be checked before the flow check of the instrument.
Replace the tape or cleaning pad and check for leaks. When the leak is detected, the instrument indicates the flow rate ≤1.0 L/min, and passes the inspection; when the indicated flow rate >
At 61.0 L/min, there is a leak, and the leak should be checked and resolved until it passes the inspection.
b) Flow check. The flow rate of the instrument is checked with a standard flow meter every month. The error between the measured flow rate and the set flow rate should be ±5%.
Within the circumference, the error between the indicated flow and the measured flow should be within ±2%. When the measured flow and the set flow error exceed ± 5%,
Or when the error between the indicated flow and the measured flow exceeds ±2%, the flow must be calibrated, and the flow error after calibration does not exceed the set flow.
±2% of the amount. See Appendix A for the calibration method.
c) Check the temperature measurement results. The temperature measured by the instrument is checked quarterly. The error between the instrument and the measured temperature should be
In the range of ±2 °C, when the error between the instrument display temperature and the measured temperature exceeds ±2 °C, the temperature should be calibrated.
d) Check the air pressure measurement results. The air pressure measured by the instrument is checked every quarter. The error between the instrument and the measured air pressure should be
In the range of ±1 kPa, the air pressure should be calibrated when the instrument displays an error of more than ±1 kPa between the measured air pressure and the measured air pressure.
e) The beta film method with external calibration film is used for semi-annual standard film inspection. The standard film inspection can be used when replacing the tape.
get on. The error between the inspection result and the nominal value of the standard film should be within ±2%.
f) The gas humidity sensor inside the instrument should be checked once every six months. The error between the instrument reading and the standard hygrometer reading should be ±4%.
Within the enclosure, calibration should be performed when it exceeds ±4%.
g) Data consistency check. A data consistency check should be performed on the instrument every six months. Data collector recording data and instrument display
Or the storage monitoring results should be consistent. When there is a significant difference, check that the instrument and data collector parameters are set properly. If
Using an analog signal output, the difference between the two should be within ±1 μg/m3. The analog output data should match the time and range.
A data consistency check should be performed each time the instrument is replaced.
h) Other quality control contents specified in the instrument manual.
i) Record the quality control situation. The quality control work record table is shown in Table B.2.
6.1.2 Oscillating balance method instrument
a) Airway leak detection. The flow oscillating balance instrument should be leak tested every month. The leak detection should be performed before the flow check of the instrument. Check
When the instrument leaks, the main flow of the instrument should be less than 0.15 L/min, and the bypass flow should be less than 0.6 L/min. Otherwise, there is a leak, and it needs to be checked and
Solve the leak and restart a new round of flow leak detection until passing the inspection.
b) Flow check. Monthly inspection of the total flow, main flow and bypass flow of the instrument with a standard flow meter, measured total flow, main
The error between the flow rate and the bypass flow rate and the set flow rate should be within ±5%, and the error between the indicated flow rate and the measured flow rate should be ±2%.
Within the scope. When the error between the measured flow rate and the set flow rate exceeds ±5%, or the error between the indicated flow rate and the measured flow rate exceeds ±2%,
The flow must be calibrated and the flow error after calibration should not exceed ±2% of the set flow. See Appendix A for the calibration method.
c) Check the temperature measurement results. The temperature measured by the instrument is checked quarterly. The error between the instrument and the measured temperature should be
In the range of ±2 °C, when the error between the instrument display temperature and the measured temperature exceeds ±2 °C, the temperature should be calibrated.
d) Check the air pressure measurement results. The air pressure measured by the instrument is checked every quarter. The error between the instrument and the me...
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