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HJ/T 76-2007

Chinese Standard: 'HJ/T 76-2007'
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Detail Information of HJ/T 76-2007; HJ/T76-2007
Description (Translated English): Specification and test procedures for continuous emission monitoring systems of flue gas emitted from stationary sources (on trial)
Sector / Industry: Environmental Protection Industry Standard (Recommended)
Classification of Chinese Standard: Z25
Classification of International Standard: 13.040.01
Word Count Estimation: 42,432
Date of Issue: 2007-07-12
Date of Implementation: 2007-08-01
Older Standard (superseded by this standard): HJ/T 76-2001
Quoted Standard: GB/T 16157-1996; HJ/T 212-2005; HJ/T 75-2007
Drafting Organization: China Environmental Monitoring Station
Administrative Organization: ?State Environmental Protection Administration
Regulation (derived from): SEPA Notice
Summary: This standard specifies the stationary sources CEMS system's main technical indicators, test items, test methods and test the quality assurance measures. This standard applies to stationary sources to monitor emissions parameters, flue gas particulate matter, sulfur dioxide, nitrogen oxides and emissions continuous detection system.

HJ/T 76-2007
HJ
Environmental Protection Industry Standard
of the People’s Republic of China
Replacing HJ/T 76-2001
Specifications and Test Procedures for Continuous Emission
Monitoring Systems of Flue Gas Emitted from Stationary Sources
(on trial)
ISSUED ON. JULY 12, 2007
IMPLEMENTED ON. AUGUST 1, 2007
Issued by. State Environmental Protection Administration
Table of Contents
Foreword ...3
1. Applicable Scope ...4
2. Normative References ...4
3. Terms and Definitions ...4
4. Structure and Description of Continuous Monitoring System ...6
5. Technical Requirements ...7
6. Installation of CEMS and Its Measuring Position ... 12
7. Sampling Positions and Sampling Points for Reference Method ... 13
8. Test Procedures for Main Technical Indices of CEMS ... 14
9. Quality Assurance ... 24
10. Test of Adaptability ... 28
11. Test Items ... 28
Appendix A ... 32
Appendix B ... 43
Appendix C ... 48
Appendix D ... 51
References and Original Chinese Documents ... 59
Foreword
In order to implement Environmental Protection Law of the People’s Republic of China and
Law of the People's Republic of China on the Prevention and Control of Atmospheric
Pollution, and monitor pollutants emitted from stationary sources of air, this Standard is herein
stipulated.
This Standard specifies the main technical indices, test items, test procedures and quality
assurance measures taken in test for continuous emission monitoring system of flue gas from
stationary sources. The continuous emission monitoring system of flue gas within the national
environmental monitoring network shall meet the requirements of this Standard.
The following revisions for “Specifications and Test Procedures for Continuous Emission
Monitoring Systems of Flue Gas Emitted from Stationary Sources” (HJ/T 76-2001) have been
made in this Standard. modification of partial technical indices of continuous monitoring
system for particulates and continuous measuring system for flow rates; further definition of
test procedures of correlation coefficient in continuous monitoring system for particulates;
supplement of technical indices of flue gas parameters and technical requirements for
continuous emission monitoring system of flue gas during its running period of 90 days.
During the drafting course, this Standard has referred to the overseas technical standards, and
technical indices and enterprise standards of continuous monitoring systems manufactured by
some domestic and abroad manufacturers.
This Standard shall come into effect from the date of implementation. And the “Specifications
and Test Procedures for Continuous Emission Monitoring Systems of Flue Gas Emitted from
Stationary Sources” (HJ/T 76-2001) shall be abandoned.
This Standard is a guidance-standard.
This Standard was put forward by Department of Science, Technology and Standards of State
Environmental Protection Administration.
The main drafters of this Standard. General Environmental Monitoring Station of China,
Shanghai Environmental Monitoring Centre, and Information Center of State Environmental
Protection Administration.
This Standard was approved by State Environmental Protection Administration on July 12,
2007.
This Standard shall been implemented from August 1st, 2007.
This Standard shall be explained by State Environmental Protection Administration.
Specifications and Test Procedures for Continuous Emission
Monitoring Systems of Flue Gas Emitted from Stationary Sources
(on trial)
1. Applicable Scope
1.1 This standard specifies CEMS’s main technical indices, test items, test procedures, and
quality assurance measures taken in test.
1.2 This standard is applicable to monitor the flue gas parameters of stationary sources,
particulates in flue gas, concentrations of SO2 and NOX, and CEMS of total emission.
2. Normative References
The provisions in the following documents are referred to by this Standard. All editions
without any date indication are valid and applicable for this Standard.
GB/T 16157-1996 Measurements of particulates in flue gas emitted from stationary sources
and sampling method for gaseous pollutants
HJ/T 212-2005 Transmission Standard of on-line auto-monitoring system for pollution sources
HJ/T 75-2007 Code for continuous emission monitoring techniques of flue gas emitted from
stationary sources (on trial)
3. Terms and Definitions
3.1 Particulates
Particulates denote solid and liquid granular substances suspended in liquids and flue gas
generated in burning, synthesis, decomposition of fuels and other substances and in treatment
of various materials.
3.2 Gaseous Pollutants
Gaseous pollutants denote various pollutants dispersed in flue gases in a gaseous form.
3.3 Dry Flue Gas in Standard Conditions
Dry flue gas in standard conditions denotes the flue gas, free of moisture at 273K and under
the pressure of 101325Pa.
3.4 Continuous Emission Monitoring, CEM
Pollutants emitted form stationary sources are continuously measured by real-time tracing
with total measuring hours for each stationary source not less than 75% of total running hours
of boilers and kilns and furnaces; measuring time each hour is not less than 45min.
3.5 Continuous Emission Monitoring System, CEMS
It includes all the equipment and devices required for continuous measurements of
concentrations of particulates and gaseous pollutants and their emission rates; it is generally
composed of three sub-systems of sampling, testing and data collection and processing.
Sampling system. collection and transportation of flue gas or isolation of flue gas from
the testing system.
Testing system. measuring pollutants, and displaying physical quantity or concentrations of
pollutants.
Data collection and processing system. data collection and processing, generating charts or
report forms, and having controlling and auto operation functions.
3.6 Point CEMS
It denotes a CEMS for measurement at a point on cross section of gas flue or duct, or along
the path equal to or less than 10% of diameter of cross section.
3.7 Path CEMS
CEMS for measurements along the path equal to or greater than 10% of diameter of cross
section of the gas flue or duct.
3.8 Span, Full Scale
The maximum measurement value is set for CEMS based on the practical requirements,
usually 1-2 times higher than the maximum emission concentration from the emission sources.
3.9 Zero Drift
Deviation between the readings of instrument and zero input after CEMS runs for a specified
time under the premise of maintenance, repair or adjustment scheduled.
3.0 Span Drift
Deviation between the readings of instrument and known reference value after CEMS runs for
a specified time under the premise of regular maintenance, repair or adjustment.
3.11 Response Time
The time required when the value displayed reaches the 90% of stabilized value.
3.12 Centroidal Area
Geometrically central area in cross section of the gas flue or duct with its area not greater than
1% of area of the cross section of the gas flue or duct.
3.13 Pretest Preparation Period
The normal running time of CEMS required (not less than 168h) under the premise of
maintenance, repair or adjustment scheduled, before testing the CEMS technical indices.
3.14 Test Period
The running time required for testing CEMS technical indices under the premise of
maintenance, repair or adjust......
Related standard:   HJ 76-2017  HJ 25.5-2018
   
 
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