CPCB issues guidelines for implementation of continuous emission monitoring systems for highly polluting industries

CPCB issues guidelines for implementation of continuous emission monitoring systems for highly polluting industries

September 12, 2017 EHS 0

The Central Pollution Control Board (“CPCB”) has issued guidelines to implement Continuous Emission Monitoring Systems (“CEMS”). CPCB finds it necessary to regulate compliance by industries with minimal inspection in this era of rapid industrialisation. Therefore, to bring discipline amongst the industries, Continuous Emission Monitoring System (“CEMS”), a mechanism of self-monitoring, compliance and transmitting effluent and emission quality data to State Pollution Control Boards (“SPCB”) / Pollution Control Committees (“PCC”) and CPCB on an ongoing basis, is being implemented.


In a letter dated 05.02.2014, the CPCB issued directions under Section 18 (1) (b) of the Air (Prevention and Control of Pollution) Act, 1981 and the Water (Prevention and Control of Pollution) Act, 1974 to the SPCB and PCC directing 17 categories of highly polluting industries such as Pulp & Paper, Distillery, Sugar, Tanneries, Power Plants, Iron & Steel, Cement, Oil Refineries, Fertilizer, Chloral Alkali Plants, Dye & Dye Intermediate Units, Pesticides, Zinc, Copper, Aluminium, Petrochemicals and Pharma Sector, etc., and Common Effluent Treatment Plants (CETP), Sewage Treatment Plants (STPs), Common Bio Medical Waste and Common Hazardous Waste Incinerators for  installing online effluent quality and emission monitoring systems to help tracking the discharges of pollutants from these units.

Online Emission Monitoring Technology provides accurate and continuous information on particulate matters / gaseous emission from stacks. The CEMS comprise the total equipment necessary to determine the concentration of gaseous emission.

Major Advantages of CEMS:

  1. CEMS provide continuous measurement of data for long periods of time, at the monitoring site of interest, without skilled staff being required to perform the analysis.
  1. All the major steps in traditional analysis like sample collection, transportation, conditioning, calibration and analysis procedures including are usually automated in on-line analyzers.
  1. In case of sudden disturbance in the system, the on-line analyzers provide timely information for taking immediate corrective/preventive steps compared to conventional methods.

Source: Central Pollution Control Board

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