Consolidated Diesel Company - Executive Summary
1. Accidental release prevention and emergency response policies: |
In this manufacturing facility, Consolidated Diesel Company (CDC) handles propane that is considered a
regulated flammable substance by EPA. The same properties that make propane valuable as a fuel also
make it necessary to observe certain safety precautions in handling propane to prevent unnecessary
human exposure, to reduce the threat to our own personal health as well as our co-workers, and to
reduce the threat to nearby members of the community. It is our policy to adhere to all applicable federal
and state rules and regulations.
2. The stationary source and regulated substance handled:
* The primary purpose of this facility is to store propane for industrial use in the manufacturing
process. Propane is received by truck and stored in a storage tank (30,000 gallon water capacity).
Propane is distributed to the manufacturing facility after proper mixing
with air through the distribution
pipeline (underground). Access to the site is restricted to authorized facility employees and
* The regulated substance handled at this distribution facility is propane.
* The maximum amount of propane that can be stored at this facility is 107,100 pounds.
3. The worst-case release scenario(s) and the alternative release scenario(s), including administrative
controls and mitigation measures to limit the distrances for each reported scenario:
* Worst-Case Scenario - Failure of the storage tank when filled to the greatest amount allowed would
release 107,100 pounds of propane. Company policy limits the maximum filling capacity of this tank
to 85% at 70 deg. F. It is assumed that the entire contents are released as vapor that finds an
ignition source. A 10% yield factor was used in the TNT-equivalency formula.
* The distance to the endpoint of 1 p
si overpressure for the worst-case scenario is 0.38 miles. This
distance extends beyond the facility boundary, encompasses several residences and a public
highway (Highway 301).
* Alternative Scenario - A pull-away causing failure of a 25-foot length of 4-inch hose. The excess
flow valves function to stop the flow. The contents of the hose are released. The vapor expands
and upon finding an ignition source, it explodes. The shockwave from the explosion creates
overpressure. The 1 psi overpressure is projected to extend 175 feet. This distance does not
extend beyond the facility boundary.
4. The general accidental release prevention program and the specific prevention steps:
This facility was designed and constructed in accordance with NFPA-58. The liquefied propane is
delivered to the storage facility by a transportation company (Wendale Transport Corporation). Their
drivers have been thoroughly
trained using NPGA's Certified Employee Training Program.
5. Five-year accident history:
We have had no accidental release of propane since June 21, 1994, that has caused deaths, injuries,
or significant property damage.
6. The emergency response program:
This facility's emergency response program is based upon the NPGA's LP-Gas Handbook, "Guidelines
for Developing Plant Emergency Response Procedures" and "How to Control LP-Gas Leaks and Fire".
The emergency response plan includes procedures for notification of the local fire authority and
notification of any potentially affected neighbors. We have discussed this program with the Nash
County Local Emergency Planning Committee and the City of Whitakers Fire Department. A
representative of the Nash County Emergency Planning Committee visited this plant on August 5, 1998.
7. Planned changes to improve safety:
This facility was constructed in 1983 and is in compliance with t
he NFPA-58 Standard, 1982 Edition.
During August of 1998, a certified inspector inspected the facility. Based on the inspection report,
certain changes were made to bring the facility into safer conditions. These changes were also
completed in August of 1998.