Farmers Union Oil Co.- Medina Ammonia Facility - Executive Summary

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             Risk Management Plan (RMP) - Ammonia 
                      Executive Summary 
                  Farmers Union Oil Company  
                     Medina, North Dakota 
 
 
 1. Accidental Release Prevention and Emergency Response Policies 
We at Farmers Union Oil Company in Medina 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.  If such a release does 
occur, our trained emergency response personnel are at hand to control and mitigate the effects of 
the release.  We also coordinate our response efforts with the Medina Fire Department, which 
prov 
ides additional emergency response expertise. 
 
 2. Stationary Source and Regulated Substances Handled 
Our facility's primary activities include support services for crop production.  We have anhydrous 
ammonia stored in a 30,000-gallon tank at our facility in Medina (Figure 1).  The maximum amount 
stored is 25,500 gallons (131,223 pounds) at the maximum fill capacity of 85 %. 
 
 3. Worst Case Release and Alternative Release Scenarios 
We utilized RMP PRO for the worst case and alternate case scenarios of the required offsite 
consequence analysis for our facility.  The following details these scenarios. 
 
The worst case release scenario involves a catastrophic release of the entire contents of the  
anhydrous ammonia storage tank (131,223 pounds) in gaseous form over a 10-minute period.  At 
Class F atmospheric stability, 1.5 m/s wind speed, and urban topography, the maximum distance to 
a toxic endpoint of 0.14 mg/L is 5.2 miles (Figure 2).  The estimated population within a 5.2-mile 
radius 
of this facility is 1,200. 
 
The alternative release scenario involves a release from an anhydrous ammonia product line.  The 
scenario involves the release of 7,616.42 pounds of ammonia in a gaseous form over a period of 30 
minutes.  Under neutral weather conditions, the maximum distance to the toxic endpoint of 0.14 
mg/L of ammonia is 0.31 mile (Figure 3).  The estimated population within a 0.31-mile radius of the 
facility is 125. 
 
 4. General Accidental Release Prevention Program 
Our facility has taken all the necessary steps to comply with the EPA's accidental release prevention 
requirements as set forth in 40 CFR part 68.  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 
(Appendix D). 
 

rocess Hazard Analysis 
Our facility conducts comprehensive studies to ensure that hazards associated with our processes are 
identified and controlled effectively.  Any findings from the hazard analysis are addressed in a 
timely manner. 
 
Operating Procedures 
Farmers Union Oil Company maintains written operating procedures to ensure that activities within 
our covered processes are conducted safely.  These procedures address various modes of operation; 
the information is regularly reviewed and is readily accessible to operators involved in the processes 
(Appendix B). 
 
Training 
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. 
 
Mechanical Integrity 
Farmers Union Oil Company conducts documented maintenance checks on process equipment to 
ensure proper operation.  Maintenance checks are conducted by qualified personnel with previous 
training in  
maintenance practices.  Examples of process equipment that would receive maintenance 
checks include:  pressure vessels, storage tanks, piping systems, relief and vent systems, emergency 
shutdown systems, controls, and pumps.  Any equipment deficiencies identified by the maintenance 
checks are corrected in a safe and timely manner (Appendix C). 
 
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 
other employees whose job tasks are affected by a modification in process conditions are promptly 
notified of the modification and offered training to deal with it. 
 
Pre-startup Reviews 
Farmers Union Oil Company routinely conducts pre-startup safety reviews related to new processes 
and modifications in established processes.  These reviews are conducted to confirm that 
construction, equipment, and operating and maintenance procedures are suita 
ble for safe startup prior 
to placing equipment into operation. 
 
 
 
Compliance Audits 
Farmers Union Oil Company conducts compliance audits on a regular basis to determine whether 
the plan's provisions, set out under the 40 CFR part 68, are being implemented.  Any non- 
compliance issue discovered during the audit is promptly corrected. 
 
Employee Participation 
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, particularly 
information resulting from process hazard analyses. 
 
 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, no accident 
al release has occurred 
during this period. 
 
 6. Emergency Response Plan 
Farmers Union Oil Company maintains 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, and notification of local emergency response agencies and 
the public (Appendix A).
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