Twin State Engineering & Chemical Company - Executive Summary |
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Twin State Engineering Company; Durant, IA; Hovey Tinsman, Jr., President; 319-359-3624. The owners, management and employees of twin State Engineering company (the facility) are committed to the prevention of any accidental releases of anhydrous ammonia. If an accidental release should occur, the facility is prepared to work with the local fire department, or other authorities, to mitigate and minimize the impacts of the release to the people and the environment. The primary activity at the facility is the manufacture and storage of agricultural fertilizers. Anhydrous ammonia is stored at the facility in one (1) storage tank of 30,000 gallons capacity. The maximum quantity stored would be 127,500 pounds. The worst case scenario would be the release of the total contents of a storage tank as a gas over a period of 10 minutes. The maximum quantity released would be 127,500 pounds, which represents the volume of the largest storage tank at 85 percent capacity as limited by design stan dards. The distance to the endpoint (point of dispersion to 200 parts per million, or ppm) is 2.4 miles. The alternate case scenario, based on the five-year accident history (or the most likely potential incident), is a release from a break in a transfer hose. The distance to the endpoint (point of dispersion to 200 ppm) is 1.2 miles. The facility has been reviewed for general compliance with the provisions of US OSHA, 29 CFR 1910.111, "Storage and Handling of Anhydrous Ammonia". The ANSI Standard, K - 61.1, "Safety Requirements for the Storage and Handling of Anhydrous Ammonia" has been adopted by reference by Iowa Administrative Code Part 21 - Chapter 43 - Rule 43.6(200). There have been no accidental releases of anhydrous ammonia in the past five years that have caused any deaths, injuries or significant property damage at the facility, nor to our knowledge, have resulted in off-site deaths, injuries, evacuations, sheltering in place, property damage or environmental damage. The facility has: a) a written emergency action plan in accordance with OSHA Standard 29 CFR 1910.38, b) provided state and local authorities with the emergency planning and community right-to-know information as required under SARA Title III (EPCRA) and c) a written emergency response plan in accordance with OSHA Standard 29 CFR 1910.120, including pre-emergency planning and employee training. |