Graymont Coop Association - Executive Summary
1. Facility Policy: The management and employees of Graymont Coop Association are committed to the prevention of any accidental releases of propane through the use of proper equipment, regular inspections, maintenance and training of all persons that work with propane. Should an accidental release occur, this facility has worked with the local fire department and local emergency planning committee so they can plan for response to a release and minimize the impact of the release to people and the environment. |
2. Facility Information: The primary activity at this facility is the storage and handling of propane for use a fuel. Propane is received, stored and distributed for use by our customers for heating fuel, motor fuel, drying grain and various other uses. The maximum quantity stored is 40000 pounds. This facility stores propane in 1 tanks.
3. Worst-Case Scenario: Failure of the largest storage tank when filled to the maximum allowed capacity of 85% at 600 F would releas
e the total contents or 40000 pounds of propane. Company procedures and equipment design standards limit the maximum filling capacity of tanks to 85% at 600 F. It is assumed that the entire contents are released as vapor, which finds an ignition source, and 10% of the released quantity is assumed to participate in the resulting explosion. The distance to the endpoint of 1 psi for the worst-case scenario is 0.3 miles.
Alternative-Case Scenario: The alternative-case scenario is assumed to be a release of 69 pounds of propane caused by the rupture of a hose when a driver fails to disconnect the hoses between a storage tank and the transfer vehicle before moving the vehicle. In this scenario, the failure involves a 25-foot length of 4" diameter hose and the excess flow valves operate properly to stop the flow. The contents of the hose are released and lead to a vapor cloud explosion. The distance to the endpoint of dispersion is 0.03 miles.
4. Accidental Release Program: This f
acility complies with the various rules and regulations governing the storage and handling of propane including ANSI K61.1, OSHA 29 CFR 1910.110, guidelines set forth in NFPA-58 as well as all applicable state and local codes. Training is provided on safe propane operations for employees.
5. Five-year Accident History: There have been no accidental releases of propane for the covered process at this facility in the past five years.
6. Emergency Response Program: This facility has a written emergency plan in accordance with OSHA Standards 29 CFR 1910.38 and 1910.120. Emergency planning and community right-to-know information is provided to the state emergency response commission, local emergency planning committee and local fire department as required by SARA Title III of EPCRA.
7. Planned Changes to Improve Safety: Safety improvement is an on-going process at this facility. Periodic inspections and evaluations are performed to assess the maintenance of safe practices an
d operations. There are no additional specific propane safety recommendations for implementation at this time.