[en] Demolition of overhead piping and supports at the Weldon Spring Chemical Plant was undertaken as an interim response action (IRA) within the Weldon Spring Site Remedial Action Project. IRAs are designed to ensure the health and safety of on-site personnel and minimize or preclude off-site releases of contamination. Prior to dismantlement a radiological survey and release plan was developed. Any radiologically contaminated material which exceeded release criteria was retained on site, along with all asbestos-containing insulation. Uncontaminated piping and supports were released from the site for salvage. This report summarizes the methods used to survey and release piping and supports and the amount of material released. 5 refs., 2 figs., 4 tabs