Underground Construction - September 2022 - 34
Styrene Emission Equipment
Innovation and Research
By NASSCO Member Dennis Pivin - CSP, CHST, CIT, Vice President of
Environmental, Health, Safety and Security at Aegion Corporation
Over the past several years, the Cured in Place Pipe
(CIPP) industry has been moving toward a better
understanding of the science regarding employee,
public safety and environmental issues surrounding
steam cure CIPP installations. While NASSCO has
made this a top priority and enlisted leading
universities to conduct research projects for
worksite emission sampling, and industrial hygiene
evaluations as well as potential environmental
impacts, there are a variety of new technology
advances in the realm of reducing volatile organic
compounds (VOCs) during the CIPP installation
process and will be covered in this article.
First, let's review the source of styrene in the CIPP
process. Many resins used in the CIPP process
contain a monomer called styrene. It is a clear,
colorless liquid that is synthesized for commercial
use from petroleum and natural gas by-products.
However, it should be noted that styrene occurs
naturally in the environment and is an inherent
component of some commonly consumed foods
and beverages like coffee, strawberries, and
cinnamon.
Over the past several years, published reports have
questioned the safety of emissions from the CIPP
process when using styrenated resins. While
several organizations, including the Styrene
Information and Research Center (SIRC) and the
National Association of Sewer Service Companies
(NASSCO) have been conducting studies to better
ascertain styrene's safety risk, there have been a
number of exciting new technologies brought
forward to address emissions concerns.
Some of these are being actively used while others
are still in the developmental phase, but all are
moving in the direction of reducing the potential
risks associated with styrene emissions.
Let's begin with discussing some of the various
technologies that were outlined in a November
2021 NASSCO webinar specific to the steam cured
CIPP process titled " CIPP and Styrene Emissions " .
In this forum presentation, the following
technologies were outlined: (1) Activated Carbon;
(2) Thermal Oxidation; (3) Biological and Chemical
Scrubbers; and (4) a combination of the abovementioned
technologies. The general requirements
for using these methods in the industry are that
they must be economical, effective, portable and
have a small footprint to work with current CIPP
equipment packages.
Aegion LLC Filtering System
Underground Construction - September 2022
Table of Contents for the Digital Edition of Underground Construction - September 2022
Contents
Underground Construction - September 2022 - Cover1
Underground Construction - September 2022 - Cover2
Underground Construction - September 2022 - Contents
Underground Construction - September 2022 - 4
Underground Construction - September 2022 - 5
Underground Construction - September 2022 - 6
Underground Construction - September 2022 - 7
Underground Construction - September 2022 - 8
Underground Construction - September 2022 - 9
Underground Construction - September 2022 - 10
Underground Construction - September 2022 - 11
Underground Construction - September 2022 - 12
Underground Construction - September 2022 - 13
Underground Construction - September 2022 - 14
Underground Construction - September 2022 - 15
Underground Construction - September 2022 - 16
Underground Construction - September 2022 - 17
Underground Construction - September 2022 - 18
Underground Construction - September 2022 - 19
Underground Construction - September 2022 - 20
Underground Construction - September 2022 - 21
Underground Construction - September 2022 - 22
Underground Construction - September 2022 - 23
Underground Construction - September 2022 - 24
Underground Construction - September 2022 - 25
Underground Construction - September 2022 - 26
Underground Construction - September 2022 - 27
Underground Construction - September 2022 - 28
Underground Construction - September 2022 - 29
Underground Construction - September 2022 - 30
Underground Construction - September 2022 - 31
Underground Construction - September 2022 - 32
Underground Construction - September 2022 - 33
Underground Construction - September 2022 - 34
Underground Construction - September 2022 - 35
Underground Construction - September 2022 - 36
Underground Construction - September 2022 - 37
Underground Construction - September 2022 - 38
Underground Construction - September 2022 - 39
Underground Construction - September 2022 - 40
Underground Construction - September 2022 - 41
Underground Construction - September 2022 - 42
Underground Construction - September 2022 - Cover3
Underground Construction - September 2022 - Cover4
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