Boiler (Small)
Steam generation capacity (tph) 
Pollutant 
Emission
limit 
Less than 2 
Particulate matter 
1200* 
2 to less than 10 
 do  
800* 
10 to less than 15 
 do  
600* 
15 and above 
 do  
150** 
*To meet the respective standards, cyclone / multicyclone is recommended as control equipment with the boiler.
**To meet the standard, bag filter / ESP is recommended as control equipment with the boiler.
Note
:
i.

12% of CO_{2} correction shall be the reference value for particulate matter emission standards for all categories of boilers. 
ii.

These limits shall supercede the earlier limits notified under Schedule I at Sr.No.(34) of EPA, 1986 (GSR 742E, dated 30^{ }August, 1990). 
iii.

Stack Height for Small Boilers 
For the small boilers using coal or liquid fuels, the required stack height with the boiler shall be calculated by using the formula
H = 14 Q ^{0.3}
Where H = Total stack height I meters form ground level.
= SO_{2} emission rate in kg/hr
In no case, the stack height shall be less than 11 metre.
Where providing tall stacks are not feasible using above formula, the limit of 400 mg/Nm^{3 }for SO_{2} emission shall be met by providing necessary control equipment with a minimum stack height of 11 metre.
Close window