Styrene Safety

Published reports have questioned the safety of emissions from the CIPP process when using styrenated resin. NASSCO has gone to great lengths to ensure our workers and communities stay healthy through the funding of objective research.

STYRENE SAFETY

PHASE 1 CIPP EMISSION STUDY

Published reports have questioned the safety of emissions from the CIPP process when using styrenated resin. NASSCO has gone to great lengths to ensure our workers and communities stay healthy through the funding of objective research. In Phase 1, the Center for Underground Infrastructure Research and Education (CUIRE) found previously published reports to be NON-CONCLUSIVE.

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PHASE 2 CIPP EMISSION STUDY

Field studies in a variety of geographic locations – testing various liner dimensions, conditions, and worker exposure – were conducted by the Trenchless Technology Center at Louisiana Tech University (TTC) and resulted in specific recommendations for refrigeration/storage trucks and emission stacks including active air monitoring in trucks, 15-foot perimeters around exhaust manholes, and more.

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PHASE 3 CIPP EMISSION STUDY

In Phase 3, TTC will evaluate the breakthrough time of various coating/resin combinations to create a mathematical model showing emission concentration versus time for different coatings and thicknesses. Validation of the model and testing the buildup of VOCs inside a liner transport truck at a wet-out facility will also be measured. Final report is expected in early 2022.

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