The EPA has implemented strict regulations to control toxic air emissions from petroleum refineries, chemical plants, terminals, storage facilities, and wastewater facilities — including harmful compounds like benzene.
To help meet these benzene emission standards, USA Industries — in partnership with RFS Compliance Solutions — engineered the EnviroShield™ Manhole Cover, a proven solution for benzene mitigation and emission control.
- 1Benzene, a known human carcinogen, poses significant health risks — making its emission reduction a public health priority.
- 2NESHAP standards aim to cut hazardous air pollutants, including benzene, by 53,000 tons annually.
- 3Under updated monitoring rules, refineries must track benzene emissions and take corrective action if thresholds are exceeded.
- 4By end of 2023, only 6 out of 109 U.S. refineries surpassed the established threshold — demonstrating the effectiveness of these regulations.
Factors contributing to benzene emissions in refineries:
Efforts to reduce benzene emissions:
Two template types are available depending on your manhole configuration. Use the diagrams and measurement keys below to identify which template applies to your installation.
Measurement Requirements
- A Top Major Diameter
- B Top Minor Diameter
- C Manhole Lid Height
- D Inner pipe opening diameter width
Measurement Requirements
- A Top Major Diameter
- B Top Minor Diameter
- C Manhole Lid Height
- D Manhole Opening Diameter
- G Ledge Height
GripSafe® ST Isolation & Test Plugs are engineered for safe, reliable isolation in high-pressure environments
