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HJ 75-2017

Chinese Standard: 'HJ 75-2017'
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HJ 75-2017English1609 Add to Cart Days<=8 Specifications for continuous emissions monitoring of SO2, NOX, and particulate matter in the flue gas emitted from stationary sources Valid HJ 75-2017
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BASIC DATA
Standard ID HJ 75-2017 (HJ75-2017)
Description (Translated English) Specifications for continuous emissions monitoring of SO2, NOX, and particulate matter in the flue gas emitted from stationary sources
Sector / Industry Environmental Protection Industry Standard
Word Count Estimation 64,622
Date of Issue 2017-12-29
Date of Implementation 2018-03-01
Older Standard (superseded by this standard) HJ/T 75-2007
Drafting Organization Chinese Academy of Environmental Sciences
Administrative Organization Ministry of Environmental Protection
Regulation (derived from) Ministry of Environmental Protection Notice No. 87 of 2017

HJ 75-2017
People's Republic of China national environmental protection standards
Replacing HJ/T 75-2007
Stationary source of pollution (SO2, NOX, particulate matter) continuous monitoring emission specifications
Specifications for continuous emissions monitoring of SO2, NOX, and
particulate matter in the flue gas emitted from stationary sources
2017-12-29 Posted
2018-03-01 implementation
Ministry of Environmental Protection released
Directory
Foreword II
1 scope of application .1
2 Normative references .1
3 Terms and definitions .1
4 fixed emission sources continuous emission monitoring system of the composition and functional requirements 3
5 fixed emission sources continuous emission monitoring system technical performance requirements .3
6 fixed source of flue gas emissions monitoring system continuous monitoring station requirements .3
7 fixed emission sources continuous emission monitoring system installation requirements .4
8 fixed pollution sources flue gas emissions continuous monitoring system technical indicators commissioning testing 8
9 Fixed Pollutant Discharge Continuous Monitoring System Technical Acceptance .8
10 Fixed pollutant source flue gas emissions continuous monitoring system for daily operation and management requirements
11 Fixed pollutant source continuous emission monitoring system for routine operation of quality assurance requirements 15
12 Fixed Pollutant Flue Gas Emissions Continuous Monitoring System Data Audit and Processing 17
Appendix A (Normative) Flue gas emissions from stationary sources continuous monitoring system The main technical indicators Debugging test method 19
Appendix B (informative) fixed emission sources continuous emission monitoring system technical indicators debugging test results analysis and treatment methods.29
Appendix C (Normative) Fixed-emission flue gas emissions continuous monitoring system output parameter calculation method .31
Appendix D (informative) fixed emission sources continuous emission monitoring system installation and commissioning of the original test record .35
Appendix E (Informative) Fixed Pollution Sources Flue Gas Discharge Continuous Monitoring System Commissioning Test Report 44
Appendix F (Informative) Stationary source of emissions monitoring system for continuous monitoring of technical indicators Acceptance Report.46
Appendix G (Informative) Stationary Pollutant Source Continuous Monitoring System Routine Inspection, Calibration and Maintenance Original Record Sheet 47
Appendix H (Normative) Fixed-emission fume emissions monitoring system continuous data acquisition and processing system and transmission system requirements.60
Foreword
In order to carry out "Law of the People's Republic of China on Environmental Protection" and "Law of the People's Republic of China on Prevention and Control of Atmospheric Pollution", strengthen
This standard is formulated by monitoring and controlling the emission of flue gas from fixed sources and improving the continuous monitoring and management of flue gas emissions from fixed sources.
This standard specifies the composition and work of a continuous monitoring system for emissions of fixed sources of flue gas (SO2, NOX, particulate matter)
Can, technical performance, monitoring station room, installation, commissioning and testing of technical indicators, technical acceptance, daily operation and management, daily operation
Line quality assurance and data audit and processing requirements.
This standard is the "fixed emission sources continuous emission monitoring technical specifications (Trial)" (HJ/T 75-2007) repair
Set This standard was first released in.2001 and first revised in.2007. The original drafting unit was Shanghai Municipal Environmental Monitoring Center.
This is the second revision. The main contents of this revision are.
- Increased flue gas humidity testing and quality control requirements;
- Simplified presentation of method and monitoring instrument structure;
- Refined CEMS installation requirements;
- Complement and improve the debugging test and technical acceptance methods, technical requirements and related records form;
- Detailed operational management and quality assurance and data review and processing requirements.
This standard Appendix A, Appendix C, Appendix H normative appendix, Appendix B, Appendix D, Appendix E, Appendix F,
Appendix G is an informative annex.
From the date of implementation of this standard, "continuous emission monitoring of flue gas emissions from fixed technical specifications (Trial)" (HJ/T 75-
2007) abolished.
This standard by the Environmental Protection Department of Environmental Monitoring Division and Science and Technology Standards Division to develop.
This standard was drafted. China Environmental Monitoring Station, Shanghai Environmental Monitoring Center, Hubei Provincial Environmental Monitoring Center Station,
Hebei Province Environmental Monitoring Center Station.
This standard MEP approved on December 29,.2017.
This standard since March 1,.2018 into effect.
This standard is interpreted by the MEP.
Stationary sources of flue gas emissions (SO2, NOX, particulate matter) Continuous monitoring
specifications
1 scope of application
This standard specifies the emissions of gaseous pollutants (SO2, NOX) in the continuous monitoring system of flue gas emissions from fixed sources,
Particulate emissions and composition and function of continuous monitoring system for flue gas parameters (oxygen content, etc.), technical performance, monitoring station
Room, installation, commissioning and testing of technical indicators, technical acceptance, routine operation management, routine operation quality assurance and data review
Nuclear and processing requirements.
This standard applies to solid, liquid fuel or raw materials for thermal power plant boilers, industrial/civil boilers and industrial furnaces
And other fixed sources of flue gas (SO2, NOx, particulate matter) continuous discharge monitoring system.
Domestic waste incinerators, hazardous waste incinerators and stationary sources of fuels (SO2,
NOx, particulate matter) Continuous emissions monitoring system can be implemented with reference to this standard.
Other relevant standards of continuous monitoring system for emission of flue gas pollutants have not been promulgated before implementation, they can be implemented with reference to this standard.
2 Normative references
This standard references the following documents or the terms of them. For undated references, the latest version
Applicable to this standard.
GB 4208 enclosure rating
GB 50057 lightning protection design specifications
GB 50093 Automatic Instrumentation Engineering Construction and Quality Acceptance Specification
GB 50168 Electrical Installation Engineering Cable Construction and Acceptance Code
Determination of Particulate Matter and Gaseous Pollutants in Exhaust of Fixed Pollution Sources GB/T 16157
HJ 76 Technical requirements and testing methods for continuous monitoring system of emission of fixed sources of fume (SO2, NOX, particulate matter)
HJ/T 212 pollution source online automatic monitoring (monitoring) system data transmission standards
HJ/T 397 fixed source exhaust gas monitoring technical specifications
3 Terms and definitions
3.1
Continuous emission monitoring
Continuous and real-time emission concentrations and emissions of particulate matter and/or gaseous pollutants emitted by stationary sources
Automatic monitoring, referred to as CEM.
3.2
Continuous monitoring system
Continuous monitoring of fixed sources of flue gas parameters required for all equipment, referred to as CMS.
3.3
Continuous emission monitoring system
Continuous monitoring of all equipment required to fix the concentration and emissions of particulate matter and/or gaseous pollutants from sources of pollution,
Referred to as CEMS.
3.4
CEMS normal operation
Meet the technical requirements of this standard, the provisions of the validity of the operation, but does not include detector pollution, equipment
Barrier, system calibration or system without regular calibration, periodic calibration and other operations during.
3.5
Valid data
In line with the technical requirements of this standard, the experience of qualified CEMS, fixed emissions of flue gas emissions,
CEMS normal operation of the measured data.
3.6
Valid hourly average
The arithmetic mean of valid data of not less than 45min in the whole hour.
3.7
Reference method
Standard method for country or industry release for comparison with CEMS measurement results.
3.8
Checkout/verification
The relative accuracy, the correlation coefficient and the correlation coefficient of CEMS (including sampling system and analysis system)
Confidence Interval, Allowable Interval, Relative Error, Absolute Error, etc. The comparison test process.
3.9
Debugging testing performance testing
Calibration of CEMS prior to technical acceptance after CEMS installation, initial set-up, and at least 168 hours of normal continuous operation
And check.
3.10
Comparision testing
The reference method for the normal operation of the CEMS sampling accuracy.
3.11
System response time response time
System response time refers to the time from the moment when the sampling probe of CEMS system accesses the standard gas until the indicator value of the analyzer reaches the standard
Quasi-gas nominal value of 90% of the time only, the middle of the time interval. Including pipeline transmission time and instrument response time.
3.12
Zero drift zero drift
In the instrument is not under the premise of repair, maintenance or adjustment, CEMS access to zero gas after the operation of the prescribed time,
The deviation of the instrument reading from the zero gas initial measurement relative to the full scale.
3.13
Spread span drift
In the instrument is not under repair, maintenance or adjustment of the premise, CEMS run at the scheduled time after the access range calibration
Gas, the percentage of the difference between the reading of the instrument and the initial value of the span calibration gas relative to full scale.
3.14
Relative accuracy relative accuracy
Simultaneous determination of gaseous pollutant concentration in flue gas by CEMS with reference method, taking the same time interval
The measurement results make up a number of data pairs, the sum of the absolute value of the difference in data pairs and the confidence coefficient and the reference method
The ratio of the average data.
3.15
Correlation calibration
Simultaneous measurement of particulate matter concentration in flue gas by CEMS with reference method, taking the same time interval and measuring the same state
The results make up a number of data pairs that are calibrated using the reference method for particulate matter CEMS by establishing correlation curves between data pairs
the process of.
3.16
Velocity field coefficient
The reference method measures the flue gas flow in synchronism with the CEMS, the average flue gas flow measured with the reference method and the time interval
The ratio of the average flue gas flow rate measured by CEMS for the same state.
4 fixed emission sources continuous emission monitoring system composition and functional requirements
CEMS from the particulate matter monitoring unit and/or gaseous pollutant monitoring unit, flue gas parameter monitoring unit, data mining
Set and processing unit.
CEMS should measure the concentration of particulate matter in flue gas, SO2 and/or NOX concentration of gaseous pollutants,
(Temperature, pressure, flow rate or flow rate, humidity, oxygen content, etc.), while calculating the emission rate and row of pollutants in the flue gas
Volume, display (to support printing) and record a variety of data and parameters, the formation of the relevant charts, and through data, graphics, etc.
Ways to transfer to management and other functions. Output parameter calculation should meet the requirements of Appendix C.
For the NOX monitoring unit, NO2 can be directly measured, but also can be converted to NO after the converter measured together,
However, it is not allowed to monitor only NO in flue gas. The efficiency of converting NO2 to NO should meet the requirements of HJ 76.
5 fixed emission sources continuous emission monitoring system technical performance requirements
Meet HJ 76 related requirements.
6 fixed sources of emissions monitoring system for continuous monitoring of monitoring station requirements
6.1 CEMS outdoor should provide an independent station room, monitoring station room and the sampling point should be as close as possible, in principle, not
More than 70m.
6.2 monitoring station room base load strength should be ≥.2000kg/m2. If the station room only placed a single cabinet, the area should be ≥
2.5 × 2.5m2. If the same station to place more than one set of analytical instruments, each additional one cabinet, station area should be increased at least 3m2,
Easy to carry out operation and maintenance operations. Station space height should be ≥ 2.8m, station built at elevation ≥ 0m Department.
6.3 monitoring station room should be equipped with air conditioning and heating equipment, indoor temperature should be maintained at (15 ~ 30) ℃, relative humidity should be ≤
60%, air conditioning should have automatic restart function, station should be installed in the exhaust fan or other ventilation facilities.
6.4 Monitoring station distribution power distribution in the room to meet the actual requirements of the instrument, the power of not less than 8 kW, at least set aside three-hole socket 5
A, power supply 1, a UPS power supply.
6.5 monitoring station room should be equipped with different concentrations of certified standard gas, and within the validity period. The standard gas should contain zero gas
(That is, the standard gas containing sulfur dioxide and nitrogen oxides concentration ≤0.1μmol/mol, generally high purity nitrogen, purity ≥
99.999%; when measuring carbon dioxide in flue gas, carbon dioxide in zero gas ≤400μmol/mol, concentration of other gases
Do not interfere with the instrument readings) and CEMS measurement of various gases (SO2, NOX, O2) range standard gas to full
Daily zero point, range calibration, calibration needs. Low concentrations of standard gases from high concentrations of standard gases through the calibration
Grid of equal dilution equipment (precision ≤ 1%), can also be equipped separately.
6.6 monitoring station room should be necessary waterproof, moisture, heat insulation, insulation measures, in particular occasions should also have the explosion-proof features.
6.7 monitoring station should have to meet the CEMS data transmission requirements of the communication conditions.
7 fixed source smoke emission monitoring system continuous installation requirements
7.1 Installation Location Requirements
7.1.1 General requirements
7.1.1.1 is located downstream of the fixed pollution source emission control equipment and upstream of the comparison monitoring section;
7.1.1.2 Unaffected by ambient light and electromagnetic radiation;
7.1.1.3 flue vibration amplitude as small as possible;
7.1.1.4 installation position should be avoided in the flue gas and water droplets in the interference, if not avoided, should be selected to be applicable
Detection of the probe and equipment;
7.1.1.5 installation location air leakage;
7.1.1.6 CEMS installation work area should be set up a waterproof low voltage distribution box, built-in leakage protector, not less than 2
A 10A socket, to ensure the monitoring equipment required power;
7.1.1.7 Sampling platform and sampling hole should be arranged reasonably;
a) Sampling or monitoring platform length should be ≥ 2m, the width should be ≥ 2m or not less than the length of the sampling gun extension 1m, around
Set 1.2m above the security fence, a solid and meet the requirements of security measures, easy routine maintenance (cleaning optics
Lens, inspection and adjustment of optical path alignment, detection of instrument performance and replacement of parts, etc.) and comparison monitoring.
b) Sampling or monitoring platform should be easy to reach personnel and monitoring instruments, when the sampling platform set at ≥ 2m above the ground
Of the location, there should be a ramp to the platform ladder (or Z-ladder, ladder), the width should be ≥ 0.9m; when the sampling platform is set at
From the ground height ≥ 20m position, there should be access to the platform of the lift.
c) When CEMS is installed in a rectangular flue, it is not advisable to open at the top of the flue if the height of the flue section is> 4 m
Reference method sampling hole; if the width of the flue section> 4m, should be opened on both sides of the flue gas sampling method reference hole and set
Multi-layer sampling platform.
d) CEMS monitoring section should be reserved for the reference method sampling hole downstream, the location and the number of sampling holes in accordance with GB/T
16157 to determine the requirements. Reference method of existing pollution source sampling hole diameter should be ≥ 80mm, new or modified sources of reference
Method The diameter of the sampling hole should be ≥ 90mm. The reference method sampling holes should be as close as possible without affecting the measurement
CEMS monitoring section. When the flue is a positive pressure flue gas or toxic, should be used with a sealed gate valve sampling hole.
Figure 1 sampling platform and sampling hole diagram
7.1.2 Specific requirements
7.1.2.1 Priority should be given to the vertical pipe section and the negative pressure area of the flue to ensure the representativeness of the sample collected.
7.1.2.2 Determination of the location should avoid the flue bend and sharp changes in the site section. For round flue, particulate CEMS
And flow rate CMS, should be set away from the elbow, the valve, the downstream of the reducer ≥ 4 times the flue diameter, and from the above components
The upstream direction ≥ 2 times the flue diameter; gaseous pollutants CEMS should be located away from the elbow, valve, adjustable tube downstream side
≥2 times the flue diameter, and ≥0.5 times the flue channel diameter upstream of the above components. For rectangular flue should be when
Diameter, the equivalent diameter according to equation (1) calculation.
 2
D AB
AB
..(1)
Where. D - equivalent diameter;
A, B - side length.
7.1.2.3 For new sources of emission, the sampling platform should be synchronized with the exhaust design, simultaneous construction, to ensure that the sampling section full
7.1.2.2 requirements of the standard; for existing sources of emission, when can not find the sampling location to meet the 7.1.2.2, should do
May choose to install CEMS sampling or analysis probe in the steady flow section, and take appropriate measures to ensure that the monitoring section smoke
Gas distribution is relatively uniform, no turbulent cross-section.
The distribution of flue gas to determine the degree of relative rms σr method, when σr ≤ 0.15 as the flue gas distribution,
σr according to equation (2) calculation.
()
( 1)
 
 
n
vv
nv
..(2)
Where. σr-- velocity relative root mean square;
iv - measuring point flue gas flow rate, m/s;
v - average velocity of flue gas in section, m/s;
n-- cross-section of the speed of the number of measuring points, the choice of measuring point in accordance with GB/T 16157 implementation.
7.1.2.4 CEMS should not be installed inside the flue to facilitate the calibration and comparison of particulate matter and flow rate reference methods
Gas flow rate <5m/s position.
7.1.2.5 If a fixed source of exhaust through the first plurality of flue or pipe into the fixed source of the total exhaust pipe
Whenever possible, CEMS should be installed on the main exhaust pipe, but CEMS should be easily calibrated using the reference method; not only in
Install a CEMS on one of the flue or plumbing and use the measured value as the source of the emissions; however,
Or pipes to install CEMS.
7.1.2.6 fixed sources of flue gas purification equipment installed bypass flue should be installed in the bypass flue CEMS or smoke
Temperature, flow CMS. The installation, operation, maintenance, data acquisition, recording and upload should meet the requirements of this standard.
7.2 installation and construction requirements
7.2.1 CEMS installation and construction shall comply with the provisions of GB 50093, GB 50168.
7.2.2 The construction unit should be familiar with the principle, structure, performance of CEMS, compiling construction scheme, construction technology flow chart, design
Preparation of technical documents, design drawings, monitoring equipment and spare parts inventory handover details, construction safety rules and other related documents.
7.2.3 Equipment Technical documents should include a list of materials, product certification, mechanical structure, electrical, instrumentation, said the installation of technology
Ming, packing list, supporting parts, purchased parts inspection certificate and instructions.
7.2.4 Design drawings should be consistent with technical drawings, mechanical drawing, electrical mapping, architectural drawings and other standards.
7.2.5 Cleaning, inspection and maintenance of equipment before installation shall meet the following requirements.
a) According to the delivery list and installation drawing list inventory check equipment and parts, defects should be promptly handled, replaced
Complement.
b) Operating components such as. sampling pumps, compressors, monitoring equipment, etc., are required to clean the sliding parts, oil lubrication protection.
c) For equipment that causes deformation due to transportation, the structural parts of the equipment shall be calibrated and re-painted with antirust paint and surface paint,
After maintenance should restore the original mark.
7.2.6 Site-side connection materials (gaskets, nuts, bolts, short pipes, flanges, etc.)
The wrong amount of side should meet the following requirements.
a) pipe or pipe counterparts, flush with the wall, the largest amount of wrong edge ≥ 1 mm;
b) The difference between the flange of the sampling hole and the flange of the connecting flange does not exceed ± 5 mm and the perpendicularity of the flange face
Limit deviation ≤ 0.2%;
c) Principle of transmission method Particle monitoring instrument emission unit and particle monitor reflection unit, measuring beam from
The center of the emission hole exits to the opposite centerline overlap limit deviation ≤ 0.2%.
7.2.7 From the probe to the analyzer's entire sampling pipeline laying should be used to bridge or pipe, etc., to ensure that the entire pipeline
Has good support. Pipeline inclination ≥5º, to prevent water in the pipeline, every 4 ~ 5m at the cable clamp. When you make it
With tracing pipelines should have a stable, uniform heating and insulation function; its set heating temperature ≥ 120 ℃, and should be higher than
Flue gas dew point temperature above 10 ℃, the actual temperature value should be able to display the cabinet or system software inquiries.
7.2.8 Cable tray installation shall meet the minimum bend radius requirements of the largest diameter cable. Cable tray connection should be used
Connecting piece. Distribution casing should be pipe and PVC pipe material distribution pipe, the bending radius should meet the minimum bending radius to
begging.
7.2.9 The power and signal cables should be laid separately to ensure the cable access and cable protection tube seal, self-control cable should be
In line with the input and output separately, digital signal and analog signal separate wiring and laying requirements.
7.2.10 Mounting accuracy and connecting parts coordinate dimensions shall comply with the technical documents and drawings. Monitoring station equipment should be arranged
Tidy, flatness and flatness of monitoring equipment should not be greater than 5mm, the monitoring equipment is firmly fixed, reliable grounding. Second time
Wiring is correct, solid and reliable, with the end of the wire should be marked loop number. Wiring neat, strong binding, insulation
it is good.
7.2.11 Each connecting pipe, flange, valve sealing gasket should be solid and complete, are not allowed to leak, leakage phenomenon. maintain
All the pipes open to ensure that the gas valve, drainage system installed should be smooth and opening and closing flexible. Automatic monitoring system empty carrier
Line 24h, the pipeline shall not appear off, leakage, strong vibration phenomenon.
7.2.12 Back-blowing gas should be dry and clean gas, back-blowing system should be tested for compressive strength, test pressure for common work
1.5 times the pressure
7.2.13 Electrical control and electrical load Equipment shell protection shall comply with the technical requirements of GB 4208, to achieve indoor protection
IP24 level, outdoor protection class IP54 level.
7.2.14 lightning protection, insulation requirements
a) The working power of the system equipment should be well grounded. The grounding cable should be more than 4 mm2
Core sheath cable, grounding resistance is less than 4Ω, and can not be shared with the lightning protection grounding wire.
b) platform, monitoring station buildings, AC power equipment, cabinets, meters and equipment metal shell, cable shield and sleeve
Pipe lightning protection, grounding the plant can use the regional network, using multi-point grounding. The factory area can not provide ground wire
Or the grounding line provided fails to meet the requirements, the grounding device should be redone near the substation.
c) monitoring station room lightning protection system should comply with the provisions of GB 50057. Power lines and signal lines set lightning protection device.
d) parallel to the power line, signal line and lightning lines, the net distance ≥ 1 m, crossing the net distance ≥ 0.3 m (see Figure 2).
e) The data signal line led by the data cabinet on the chimney or the main flue should be introduced into the monitoring station house through the lightning arrester, should avoid
Grounding device grounding with lightning protection station reliable connection.
f) The signal cable is shielded cable, the shield should be well insulated, not with the rack, the cabinet friction, ignition,
Shield both ends and in the middle need to do the ground connection (see Figure 3).
Figure 2 power lines, lightning lines and signal lines distance diagram
Figure 3 signal line grounding diagram
8 fixed pollution sources continuous monitoring system emissions monitoring and testing of technical indicators debugging
After the CEMS is installed and operated in the field, the commissioning and testing of technical performance indexes should be conducted before acceptance. debugging
Technical indicators of testing include.
a) Particle CEMS zero drift, range drift;
b) CEMS linear correlation coefficient, confidence interval, allowable interval;
c) Zero point shift and range shift of gaseous pollutants CEMS and oxygen CMS;
d) CMS indication error of gaseous pollutants CEMS and oxygen;
e) response time of gaseous pollutants CEMS and oxygen CMS system;
f) CMS accuracy of gaseous pollutants CEMS and oxygen;
g) Velocity CMS Velocity coefficient;
h) Velocity CMS coefficient of flow field precision;
i) Temperature CMS accuracy;
j) Humidity CMS accuracy.
The commissioning and testing methods of each technical index are carried out according to appendix A, the commissioning and testing results do not meet the technical requirements of this standard
According to Appendix B processing, debugging test data can refer to Appendix D format records, commissioning testing completed after the preparation of testing
Report, the format of the report can refer to Appendix E, the test results should meet the requirements of Table A.3.
9 fixed source flue gas emissions continuous monitoring system technical acceptance
9.1 General requirements
After CEMS has completed the installation, commissioning and testing and has been networked with administrations, it should conduct technical acceptance including CEMS
Technical indicators acceptance and networking acceptance.
9.2 Technical acceptance conditions
After completing the installation, commissioning and testing and meeting the following requirements, CEMS can organize the technical acceptance work.
a) CEMS installation location and manual sampling location should meet the requirements of Chapter 7 of this standard.
b) Data acquisition and transmission and communication protocols shall comply with the requirements of HJ/T 212 and provide data within one month
Set and transmit self-test reports, the report should respond to the contents of the data transfer standards.
c) According to the requirements of Chapter 8 of this standard for 72h debugging testing, testing and commissioning to provide qualified reports and adjustments
Test test results data.
d) At least stable operation after commissioning test 7d.
9.3 CEMS technical indicators acceptance
9.3.1 General requirements
9.3.1.1 CEMS Technical Specifications Acceptance includes particulate matter CEMS, gaseous pollutant CEMS, smoke parameters CMS technology
Indicator acceptance.
9.3.1.2 Acceptance time by the sewage unit and the acceptance unit to decide.
9.3.1.3 During the site acceptance, the production equipment should be normal and stable operation, by adjusting the fixed source of flue gas purification equipment
Prepared to reach a certain discharge status, which should be stable during the test.
9.3.1.4 In routine operation, when changing CEMS analysis instruments or changing CEMS sampling points, the requirements of 7.1, 7.2
The request, and carry on the acceptance again.
9.3.1.5 Site acceptance must be certified reference material or standard sample, the lower concentration of standard gas can use high
Concentration of the standard gas obtained by equal dilution method, the proportion of dilution precision of less than 1%. Standard gas
Body requirements stored in aluminum or stainless steel bottles, the uncertainty does not exceed ± 2%.
9.3.1.6 For the optical particulate matter CEMS, the calibration of the actual measurement of the optical path to full optical calibration to ensure that the launch
After the first light exit lens, and then through the actual measurement of the optical path to the calibration lens, and then through the lens to reach the acceptance unit,
Laser transmitters and receivers must not be calibrated. For withdrawable gaseous pollutants CEMS, when system-wide
Zero calibration and span calibration, indication error and system response time detection, zero gas and standard gas should be through the preset tube
Line to the sampling probe, through the sample transfer line back to the station, after a full set of pretreatment facilities into the gas analysis
instrument.
9.3.1.7 Pre-acceptance inspection Direct extraction of gaseous pollutant sampling with heat pipe settings shall comply with the provisions of 7.2.7. Cold dry
Act CEMS condenser settings and the actual control temperature should be maintained at 2 ~ 6 ℃.
9.3.2 particulate CEMS technical indicators acceptance
9.3.2.1 acceptance of content
Particulate CEMS Specifications Acceptance includes zero drift, range drift and accuracy acceptance of particulates.
9.3.2.2 Particle CEMS zero drift, range drift
At the beginning of the acceptance, the instrument zero and span are manually or automatically calibrated, the initial zero point and span readings are measured and recorded,
To be the end of the acceptance of the accuracy of particulate matter CEMS, and at least from the initial zero, measured again after measuring 6h (artificial
Or automatically) and record zero, span readings, followed by zero and span calibration. Press Appendix A formula (A1) ~ male
Equation (A4) calculates zero drift and span drift.
9.3.2.3 Accuracy of particulate CEMS
Using the reference method to measure the average concentration of particulate matter in the flue gas with CEMS simultaneously, at least 5 pairs of
Interval and the same state of the measurement results, calculate the accuracy of particulate CEMS as follows.
Absolute error. CEMS
1 )
d CC
n 
  ( .. (3)
Relative error.  i  100%
R d
.. (4)
Where. id - absolute error, mg/m3;
n - the number of tests (≥ 5);
Ci - the i th concentration measured by the reference method, mg/m3;
Concentration of CCEMS - CEMS and reference method measured over the same period, mg/m3;
Re - relative error,%.
9.3.3 Acceptance of gaseous pollutants CEMS and oxygen CMS specifications
9.3.3.1 Acceptance of content
Gas pollutants CEMS and oxygen CMS technical indicators include zero drift, drift, indication error,
System response time and accuracy acceptance. On-site acceptance, the first demonstration error and the system response time acceptance test, no
Meet the technical requirements, may no longer continue to carry out the acceptance of the remaining projects.
Note. The zero gas and standard gas access should pass through the CEMS system, shall not be directly into the gas analyzer.
9.3.3.2 CTE of gaseous pollutants and oxygen CMS indication error, system response time
a) Indication error.
1) access to zero gas (filtered particulate matter, clean gas or clean nitrogen gas), adjust
Instrument zero.
2) The introduction of high concentrations (80% to 100% of full scale value) standard gas, adjust the instrument shows the concentration value and standard
The gas concentration is the same.
3) The instrument after the above calibration, according to zero gas, high concentration of standard gas, zero gas, medium concentration (50% ~ 60%
Full scale value) Standard gas, zero gas, low concentration (20% to 30% of full scale value) Standard gas
Sequential access to the standard gas. If the concentration of the low concentration of the standard gas is higher than the emission limit, then the concentration must be introduced
Lower than the emission limit of the standard gas to complete the ultra-low emission after the transformation of thermal power pollution sources should also be introduced into the concentration
Standard gas below ultra-low emission levels. To be displayed after the concentration value is stable read the measurement results. Repeat test
Set 3 times, take the average. According to Appendix A formula (A19), (A20) to calculate the indication error.
b) System response time.
1) CEMS to be tested after the operation is stable, according to the system set sample flow into the zero gas, until the reading is stable
Follow the same flow rate access calibration gas, at the same time start the stopwatch time;
2) Observe the value of the analyzer, until the reading starts to jump, record and calculate the transmission time of the sample gas pipeline T1;
3) Continue to observe and record the instrument to be tested when the display value rose to 90% of the nominal value of the standard gas concentration of the instrument
Table response time T2;
4) The system response time is the sum of T1 and T2. Repeat the test 3 times, take the average.
9.3.3.3 gaseous pollutants CEMS and oxygen CMS zero drift, range drift
a) Zero drift.
System access to zero gas (filtered non-particulate matter, the test gas clean dry air or high purity nitrogen), calibrator
To zero, test and record the initial reading Z0. Until the acceptance of gaseous pollutants and oxygen accuracy end, and at least from the initial
Test 6h, then pass zero gas, to be recorded after reading zero reading Z1. According to Appendix A formula (A1) and (A2)
Calculate zero drift Zd.
b) Span drift.
System access to high concentrations (80 to 100% of full scale) standard gas, the instrument calibration to the standard gas concentration,
Test and record the initial reading S0. Until the acceptance of gaseous pollutants and oxygen accuracy end, and at least 6h after the initial test,
Then pass the same standard gas, record the standard gas reading S1 after the reading is stable. According to appendix A formula (A3) and (A4)
Calculate range shift Sd.
9.3.3.4 Accuracy of gaseous pollutants CEMS and oxygen CMS
Reference Method Simultaneous measurement of gaseous pollutants and oxygen concentrations in flue gas with CEMS, obtaining at least 9 pairs of data, each
A pair of data take 5 ~ 15min average. Absolute error according to formula (3) calculation, the relative error according to formula (4) calculation, the relative
Accuracy according to Appendix A formula (A21) ~ formula (A26) calculation.
9.3.4 smoke parameters CMS technical indicators acceptance
9.3.4.1 Acceptance of content
Flue gas parameters index acceptance, including flow rate, smoke temperature, humidity accuracy acceptance.
Using the reference method and the flow rate, smoke temperature, humidity CMS synchronous measurement, at least get five simultaneous test section value
Data pairs, respectively, calculate the flow rate, smoke temperature, humidity, CMS accuracy.
9.3.4.2 Velocity accuracy
Flue gas flow rate accuracy is calculated as follows.
Absolute error. CEMS
1 V)
vi i
d V
n 
  ( .. (5)
Relative error.  vi  100%
ev
R d
(6)
Where. vi d - absolute error of flow rate, m/s;
n - the number of tests (≥ 5);
VCMS - average flow rate of flue gas measured in the same period of flow rate CMS and reference method, m/s;
Vi - average velocity of flue gas in test section measured in reference method, m/s;
Rev - relative velocity error,%.
9.3.4.3 Smoke temperature accuracy
Absolute temperature error calculation method.
CEMS
1 )
TTT
n 
  (. (7)
Where. △ T - smoke absolute error, ℃;
n - the number of tests (≥ 5);
TCEMS - Mean flue gas temperature, ° C, determined by the same period of flue - cured CMS and reference methods.
Ti - reference method for the determination of the average flue-cured temperature, ° C (with the determination of particulate reference method simultaneously).
9.3.4.4 Humidity accuracy
Humidity accuracy is calculated as follows.
Absolute error. SW SWCM
S SW
1 )
i XXX
n 
  ( .. (8)
Relative error. SW
SW
100% es
RX
  .. (9)
Where. △ XSW - absolute error of flue gas humidity,%;
n - the number of tests (≥ 5);
XSWCMS - average flue gas humidity measured in the same period of the CMS and reference method of flue gas humidity,%;
XSWi - average flue gas humidity as measured by the reference method,%;
Res - relative humidity error,%.
9.3.5 Acceptance test results can refer to Appendix D in Table D.1, Table D.3 ~ Table D.5 and Table D.8 form records.
9.3.6 Technical Specifications Acceptance Test Report Format
The report should include the following information (refer to Appendix F).
a) Report identification - numbering;
b) Date of inspection and date of preparation of the report;
c) CEMS logo - manufacturing unit, model and serial number;
d) the name of the enterprise where the CEMS is installed and the name of the relevant pollution source where the installation is located;
e) records of environmental conditions (atmospheric pressure, ambient temperature, ambient humidity);
f) indication of error, system response time, zero drift and span drift acceptance reference standards;
g) the standard of accuracy acceptance reference;
h) the standard gas traceable to national standards;
i) The main equipment, instruments and so on used in the reference method;
j) test results and conclusions;
k) test unit
l) Third-level audit signature;
m) Remarks (Other information considered by the TSA to be relevant to assessing the performance of CEMS).
9.3.7 indication error, system response time, zero drift and span drift acceptance technical requirements
Table 1 shows the value of error, the system response time, zero drift and span drift acceptance of technical requirements
Testing project technical requirements
Gaseous pollutant
CEMS
Sulfur dioxide
Indication error
When the full scale ≥ 100μmol/mol (286mg/m3), the value
The error does not exceed ± 5% (relative to the standard gas nominal value);
When the full scale <100μmol/mol (286mg/m3), the value
The error does not exceed ± 2.5% (relative to the meter full-scale value)
System response time ≤.200s
Zero drift, range
drift
Not more than ± 2.5%
Nitrogen oxides
Indication error
When the full scale ≥.200μmol/mol (410mg/m3), the value
The error does not exceed ± 5% (relative to the standard gas nominal value);
When the full scale <200μmol/mol (410mg/m3), the value
The error does not exceed ± 2.5% (relative to the meter full-scale value)
System response time ≤.200s
Zero drift, range
drift
Not more than ± 2.5%
Oxygen CMS O2
Indication error ± 5% (relative to standard gas nominal value)
System response time ≤.200s
Zero drift, range
drift
Not more than ± 2.5%
Particulate CEMS particles
Zero drift, range
drift
Not more than ± 2.0%
Note. NOx is calculated as NO2.
9.3.8 accuracy acceptance technical requirements
Table 2 accuracy acceptance technical requirements
Testing project technical requirements
Gaseous pollutant
CEMS sulfur dioxide accuracy
Emission concentration ≥ 250μmol/mol (715mg/m3), the relative standards
≤ 15%
50μmol/mo (l 143mg/m3) ≤ emission concentration <250μmol/mol
(715mg/m3), the absolute error does not exceed ± 20μmol/mol
(57mg/m3)
20μmol/mol (57mg/m3) ≤ emission concentration <50μmol/mol
(143mg/m3), the relative error does not exceed ± 30%
Testing project technical requirements
Absolute emission when discharge concentration <20μmol/mol (57mg/m3)
No more than ± 6 μmol/mol (17 mg/m3)
Nitroxide accuracy
Emission concentration ≥ 250μmol/mol (513mg/m3), the relative standards
≤ 15%
50μmol/mo (l 103mg/m3) ≤ emission concentration <250μmol/mol
(513mg/m3), the absolute error does not exceed ± 20μmol/mol
(41 mg/m3)
20μmol/mol (41mg/m3) ≤ emission concentration <50μmol/mol
(103mg/m3), the relative error does not exceed ± 30%
Absolute error when emission concentration <20μmol/mol (41mg/m3)
No more than ± 6 μmol/mol (12 mg/m3)
Other gas
Contaminants
Accuracy relative accuracy ≤ 15%
Oxygen CMS O2 accuracy
> 5.0%, relative accuracy ≤15%
≤5.0%, the absolute error does not exceed ± 1.0%
Particle CEMS Particle Accuracy
Emission concentration>.200mg/m3, the relative error does not exceed ± 15%
100 mg/m3 Over ± 20%
50 mg/m3 Over ± 25%
20 mg/m3 Over ± 30%
10 mg/m3 ± 6 mg/m3
Emission concentration ≤ 10mg/m3, the absolute error of not more than ± 5 mg/m3
Velocity CMS Velocity Accuracy
Flow rate> 10m/s, the relative error does not exceed ± 10%
Flow rate ≤ 10m/s, the relative error does not exceed ± 12%
Temperature CMS temperature accuracy does not exceed the absolute error of ± 3 ℃
Humidity CMS Humidity Accuracy
Fog humidity> 5.0%, the relative error does not exceed ± 25%
Flue gas humidity ≤ 5.0%, the absolute error of not more than ± 1.5%
Note. Nitrogen oxides to NO2 meter, the above parameters are divided by the reference method measurement results shall prevail.
9.4 network acceptance
9.4.1 network acceptance content
Acceptance by the network communication and data transmission acceptance, on-site data comparison and acceptance of acceptance and stability of the network acceptance of three parts.
9.4.2 Communication and data transmission acceptance
Check the correctness of the communication protocol according to HJ/T 212. Data Acquisition and Processing Subsystem and Monitoring Center
Communication should be stable between, there is no recurring communication connection interruption, packet loss, packet incomplete communication problems. for
To ensure the safety of monitoring data transmitted over the public data network, the data acquisition and processing subsystem used shall be encrypted
transmission. Monitoring data transmission to the monitoring system, the data acquisition and processing subsystem should be directly transmitted.
9.4.3 Comparison of field data Acceptance
Data acquisition and processing subsystem stable operation a week later, the data sampling, compared with the host computer to receive
The data and the field machine to store the data is consistent, accurate to a decimal.
9.4.4 network stability acceptance
Within one month in a row, the subsystem can run stably without any problems such as communication stability, correctness of communication protocols, data
Transmission problems other than network correctness.
9.4.5 Network Acceptance Technical Requirements
Table 3 network acceptance technical indicators
Acceptance test items assessment indicators
Communication stability
1. Live machine online rate of 95% or more;
2. Under normal circumstances, dropped, it should be re-launched within 5min;
3. A single data acquisition transmitter dropped daily number of times less than 3 times;
4. Message transmission stability of more than 99%, when the message is wrong or lost, start error correction logic, to
Seek the data acquisition transmitter to resend the message
Data transfer security
1. The transmitted data shall be encrypted and transmitted in accordance with the encryption method specified in HJ/T 212
Data transmission security.
2. The server authenticates the client requesting connection
Correctness of the communication protocol The communication protocol between the field machine and the host computer should comply with the provisions of HJ/T 212 with a correct rate of 100%
Data transfer correctness
After a week of stable system operation, check the data for a week, compare the data received and the scene
Data consistent, accurate to a decimal, check the data correct rate of 100%
Network stability
System stable operation for a month, does not appear in addition to communication stability, communication protocol correctness, data transmission is correct
Sex other than networking issues
10 fixed pollution sources continuous monitoring system emissions emissions daily management requirements
10.1 General requirements
CEMS operation and maintenance unit should be based on CEMS manual and the requirements of this standard preparation of equipment operation management procedures,
Set system operators and maintenance staff management responsibilities. Operation and maintenance personnel should be familiar with continuous monitoring of flue gas emissions
Measuring instrument equipment principle, use and maintenance methods. CEMS daily operations management should include the following.
10.2 routine inspection
CEMS operation and maintenance unit should be based on the standards and instructions related to the use of equipment to develop inspection procedures, and strictly according to
According to the rules to carry out routine inspection work and make a record. Daily inspection records should include inspection items, inspection date, seized items
The purpose of running status and other content, each inspection should be recorded and archived. CEMS daily inspection interval does not exceed 7d.
Daily inspection can refer to Appendix G in Table G.1 ~ Table G.3 form of record.
10.3 routine maintenance
CEMS manual should be based on the requirements of CEMS system maintenance content, maintenance cycle or replacement of such supplies do
A clear rule, each maintenance should be recorded and archived. Spare parts or materials to be replaced each time spare parts or materials are changed
Material name, specifications, quantity, etc. should be recorded and archived. Such as the replacement of certified reference material or standard samples, but also need to record the new standard
The source, expiration date, and concentration of the quasi-substance or standard sample. The routine inspection or maintenance found in the fault or
Problem, system management and maintenance personnel should promptly handle and record.
CEMS day-to-day running management reference Appendix G format records.
10.4 CEMS calibration and verification
The CEMS system should be routinely calibrated according to the method specified in this standard and the period specified in Chapter 11, Quality Assurance
Quasi and verify the operating procedures. Calibration and calibration records should be promptly filed.
11 Fixed pollutant source emissions monitoring system continuous operation of continuous quality assurance requirements
11.1 General requirements
CEMS daily operation quality assurance is to ensure the normal and stable operation of CEMS, and continuously provide quality assurance monitoring data
The necessary means. When CEMS can not meet the technical indicators out of control, should take timely corrective measures, and should shorten the next
Secondary calibration, maintenance and calibration interval.
11.2 Regular calibration
Routine calibration during CEMS operation is an important part of QA and regular calibration should.
a) Particulate matter CEMS with auto-calibration function and gaseous pollutant CEMS are automatically calibrated at least once every 24h
Times the instrument zero and range, while testing and record zero drift and range drift;
b) CEMS with no automatic calibration function Calibrate the zero and span of the instrument every 15d at least
Test and record zero drift and span drift;
c) Direct measurement without automatic calibration function CEMS gaseous pollutants shoul...
Related standard:   HJ 471-2020  HJ 8.2-2020
   
 
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