Underground Construction - March 2021 - 40
HOW TO MEASURE STYRENE
ON A CIPP JOBSITE
By NASSCO Member Dennis Pivin, CSP
VP Environmental, Health, Safety and Security at Aegion Corporation
There has been a lot of misinformation and questions recently regarding CIPP job sites and testing
for styrene. This article will strive to help CIPP companies better understand the use of the PhotoIonization Detector (PID) when sampling job sites.
First, we need to conduct a hazard assessment and determine what data need to be collected, what
methods are best suited for gathering this data, and what will the employer do with this data once
completed. Unfortunately, in many cases the employer may not fully understand how to conduct the
hazard assessment and may use incorrect methods to gather data. For example, is the employer
looking to collect data for environmental release concerns or is the focus to assess the job site to
understand potential worker exposures?
While there are a variety of sampling devices (Photo-Ionization Devices, Organic Vapor Monitors,
Waterloo Sampler, and Colorimetric tubes (Drager tubes)) this NASSCO Tech Tip focuses on the PID.
The PID is designed to use a broad-band sensor that measures a wide variety of Volatile Organic
Compounds (VOCs) in very low concentrations of 0.1 to 2000 ppm. The PID operates by using a
pump that pulls air across an ultra-violet lamp. This lamp ionizes the particles as they pass across
it, resulting in the charged ions moving toward plates in the sensor, and current is produced. The
current is then measured, and a concentration in ppm is displayed on the meter.
What does the PID measure? Before starting to use a PID, the user should keep in mind that
according to manufacturer's specifications, a PID should be calibrated prior to its use. Always refer to
the user's manual on proper calibration gases and the proper technique to conduct the instrument
calibration. The PID can successfully measure a carbon containing volatile organic compounds.
Some of these compounds include, but are not limited to, the following:
CATEGORY
CHEMICAL
Aromatics
Benzene, Ethyl Benzene, Toluene, Xylene, Styrene
Amines
Diethyl Amine, Triethyl Amine
Ketones Aldehydes
Chlorinated Hydrocarbons
Alcohols
40
MARCH 2021 | UCONonline.com
Acetone, Methyl Ethyl Ketone
Trichlorethylene
Ethanol, Methanol, Butyl Alcohol
http://www.UCONonline.com
Underground Construction - March 2021
Table of Contents for the Digital Edition of Underground Construction - March 2021
Contents
Underground Construction - March 2021 - Cover1
Underground Construction - March 2021 - Cover2
Underground Construction - March 2021 - Contents
Underground Construction - March 2021 - 4
Underground Construction - March 2021 - 5
Underground Construction - March 2021 - 6
Underground Construction - March 2021 - 7
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Underground Construction - March 2021 - Cover3
Underground Construction - March 2021 - Cover4
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