Farmers Union Oil Company, Mahnomen - Executive Summary
Executive Summary - Farmers Union Oil Company |
1. Accidental Release Prevention and Emergency Response Policies
We at Farmers Union Oil Company are strongly committed to employee, public and environmental
safety. This commitment is an inherent part of our comprehensive accidental release prevention
program that covers areas such as design, installation, operating procedures, maintenance, and
employee training associated with the processes at our facility. It is our policy to implement
appropriate controls to prevent possible releases of regulated substances. Unforeseeably, if such a
release does occur, our trained emergency response personnel are at hand to control and mitigate the
effects of the release. We are also coordinated with the Mahnomen Fire Department which
provides additional emergency response expertise.
2. The Stationary Source and the Regulated Substances Handled
primary activities includes support services for crop production. We have Anhydrous
Ammonia stored in one 30,000 gallon tank located at our facility in Mahnomen, MN (Figure 1).
The maximum amount stored is 25,800 gallons (132,767 lbs.) at the maximum fill capacity of 86%.
3. The Worst Case Release Scenario and the Alternative Release Scenarios
To perform the required offsite consequence analysis for our facility, we utilized RMP Comp
provided by the Environmental Protection Agency (EPA). The following paragraphs provide details
of the chosen scenarios.
The worst case release scenario involves a catastrophic release of the entire contents of the
anhydrous ammonia storage tank (132,767 lbs.) in gaseous form over 10 minutes. At Class F
atmospheric stability, 1.5 m/s windspeed and urban topography, the maximum distance of 5.2 miles
is obtained corresponding to a toxic endpoint of 0.14 mg/L (Figure 2).
The alternative release scenario involves a release from a anhydrous ammoni
a product line. The
scenario involves the release of 1280 lbs. of ammonia in a gaseous form over 10 minutes. Under
neutral weather conditions, the maximum distance to the toxic endpoint of 0.14 mg/L of Ammonia
is 0.19 miles (Figure 3).
4. The General Accidental Release Prevention Program
Our facility has taken all the necessary steps to comply with the accidental release prevention
requirements set out under 40 CFR part 68 of the EPA. The following sections briefly describe
the elements of the release prevention program that is in place at our stationary source.
Process Safety Information
Farmers Union Oil Company maintains a detailed record of safety information that describes the
chemical hazards, operating parameters and equipment designs associated with all processes
Process Hazard Analysis
Our facility conducts comprehensive studies to ensure that hazards associated with our processes are
identified and controlled efficiently. Any findings related to the
hazard analysis are addressed in a
For the purposes of safely conducting activities within our covered processes, Farmers Union Oil
Company maintains written operating procedures. These procedures address various modes of
operation and the information is regularly reviewed and is readily accessible to operators involved
in the processes (Appendix B).
Farmers Union Oil Company has a comprehensive training program in place to ensure that
employees who are operating processes are competent in the operating procedures associated with
these processes (Appendix C).
Farmers Union Oil Company carries out highly documented maintenance checks on process
equipment to ensure proper operations. Process equipment examined by these checks includes
among others; pressure vessels, storage tanks, piping systems, relief and vent systems, emergency
shutdown systems, controls and pumps. Maintenance operations are carried out by qualifi
personnel with previous training in maintenance practices. Any equipment deficiencies identified
by the maintenance checks are corrected in a safe and timely manner (Appendix D).
Management of Change
Written procedures are in place at Farmers Union Oil Company to manage changes in process
chemicals, technology, equipment and procedures. Process operators, maintenance personnel or any
other employee whose job tasks are affected by a modification in process conditions are promptly
made aware of and offered training to deal with the modification.
Pre-start up safety reviews related to new processes and to modifications in established processes
are conducted as a regular practice at Farmers Union Oil Company.. These reviews are conducted
to confirm that construction, equipment, operating and maintenance procedures are suitable for safe
startup prior to placing equipment into operation.
Farmers Union Oil Company has compliance audits conducted
on a regular basis to determine
whether the provisions set out under the RMP rule are being implemented. If the compliance audit
discover non-compliances in the system, they are promptly corrected.
Farmers Union Oil Company truly believes that process safety management and accident prevention
is a team effort. Company employees are strongly encouraged to express their views concerning
accident prevention issues and to recommend improvements. In addition, our employees have access
to all information created as part of the facility's implementation of the RMP rule, including
information resulting from process hazard analyses in particular.
5. Five-year Accident History
Farmers Union Oil Company has had an excellent record of preventing accidental releases over the
last 5 years. Due to our stringent release prevention policies, there has been no accidental release
during this period.
6. Emergency Response Plan
Farmers Union Oil Company carries a written
emergency response plan to deal with accidental
releases of hazardous materials. The plan addresses all aspects of emergency response including
first aid and medical treatment, evacuations, notification of local emergency response agencies and
the public (Appendix A).