WRPS is committed to the timely and transparent release of information related to chemical vapors in the Hanford tank farms. This website seeks to provide data, news and background information so interested parties can have an informed dialogue on this important issue. AOP-015 Event Investigation Reports are available here and are published in accordance with the Settlement Agreement (full) (Settlement agreement with modifications 02/01/2023) after the reports have been completed and approved for publishing.
Hanford tank vapors are complex. Learn more about what chemicals in the tanks, the types of chemicals, Occupational Exposure Limits (OELs), and various vapors sources.
Learn more about the vapors management strategy, industrial hygiene (IH) sampling and monitoring, and the Tank Vapors Assessment Team (TVAT).
A respirator is a device worn by workers to protect against harmful dust, fumes, vapors or gases. Air-purifying respirators (APRs) use a filter cartridge to clean the air before it enters the respiratory tract. Some Hanford workers are now using APRs in AP Farm for certain work activities.
Farm of the Future
Washington River Protection Solutions has implemented a proactive management approach to chemical vapors exposure. This includes:
- Ensuring farm boundaries are protective and safe
- Providing centralized command and control
- Implementing a comprehensive plan inside/outside farm boundary
- Establishing rigorous source identification and effective controls
Hanford has 177 tanks: 149 single-shell and 28 newer double-shell.
Hanford’s tanks contain 56 million gallons of high-level radioactive and chemical wastes.
There are 1,800 different chemicals in Hanford’s tank waste.
61 of those chemicals pose a potential health concern to Hanford workers.
WRPS Tool Box
IH Data Access & Visualization portal
This data explorer program provides access to the tank farms portion of the Site-Wide TOC Industrial Hygiene Database (SWIHD), which features data from October 2008 through the present time.