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Stack Monitoring

Stack Monitoring
Stack Monitoring
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Service Code : 01

Isokinetic Sampling

The purpose of isokinetic sampling is to capture particulates or aerosols that pass through a defined area over a given time period without altering their travel paths. The velocity of the stack gas going into the sampling probe's nozzle is equal to the velocity of the moving stack gas at that point in the stack cross sectional area. The moving stack gas is disturbed as little as possible so that the same amount of particles and aerosols go into the probe nozzle as would have passed the area of the nozzle had it not been there.

Wet Chemistm Method

Wet chemistry methods employ either isokinetic, non-isokinetic, proportional or non-proportional integrated sample techniques. These methods are used to determine various flue gas components such as Sulphur Dioxide, Sulphur Trioxide, Dioxins and Furans, Hydrochloric Acid, Chlorine and Multi Metals. These wet chemistry methods collect the targeted contaminant in specific chemical solutions held in the sample train's impingers. After the samples are collected, the impinger contents are analyzed using US EPA (Environmental Protection Agency) test methods.

Envosha are specialized in conducting stack monitoring and would be able to monitor as per Department of Environment stipulated requirements; Environmental Quality (Clean Air) Regulation, 1978 Part V, Air Impurities, aII emission should not exceed the Full Std C Specifications which are:

Technical Specifications

Test Parameter

Unit

Standard C

Dust

g/Nm3

0.4 g/Nm3

NOx

g/Nm3

2.0 g/Nm3

HF

g/Nm3

0.1 g/Nm3

HCI

g/Nm3

0.4 g/Nm3

CI2

g/Nm3

0.2 g/Nm3

H2SO4

g/Nm3

0.2 g/Nm3

Cu

g/Nm3

0.1 g/Nm3

Zn

g/Nm3

0.1 g/Nm3

As

g/Nm3

0.025 g/Nm3

Sb

g/Nm3

0.025 g/Nm3

Pb

g/Nm3

0.025 g/Nm3

Cd

g/Nm3

0.015 g/Nm3

Hg

g/Nm3

0.01 g/Nm3

Test Method: MS 1596: 2003 (Malaysian standard of Testing ) and USEPA (Environmental protection agency) Test Methods.


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Envosha Sdn Bhd
No: A10-7, Centerpoint Business Park, Jalan Tanjung Keramat 26/35, Seksyen 26, Shah Alam, Darul Ehsan - 40000, Selangor, Malaysia
Mr. Hari Vicknes (Business Head)
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