Skip to product information
1 of 9

PayPal, credit cards. Download editable-PDF and invoice in 1 second!

HJ/T 76-2007 English PDF (HJT76-2007)

HJ/T 76-2007 English PDF (HJT76-2007)

Regular price $280.00 USD
Regular price Sale price $280.00 USD
Sale Sold out
Shipping calculated at checkout.
Quotation: 24-hr self-service. Click HJ/T 76-2007
See Chinese contents: HJ/T 76-2007

HJ/T 76-2007: Specification and test procedures for continuous emission monitoring systems of flue gas emitted from stationary sources (on trial)

HJT 76-2007 specifies CEMS.
HJ/T 76-2007
HJ
Environmental Protection Industry Standard
of the PEOPLE 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 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 adjustment scheduled (initial test not less than 168h). 3.15 Retest Period
??? Confidence interval. 95% confidence level shall be within the interval composed of two straight lines in the calibration curve corresponding to ??10% of concentration limits of emitted particulates.
??? Permissible interval. shall have 95% confidence level, namely 75% of measured values shall be within the interval composed on two straight lines in the calibration curve corresponding to ??25% of concentration limits of emitted particulates.
5.8.1.5 Accuracy
Retest shall meet the following requirement.
When emission concentration of particulates measured with a reference method (??PM) a. When ??PM???50mg/m3, the absolute error of average of the measured results by CEMS method and reference method shall not exceed 15mg/m3;
b. When ??PM>50m...

View full details