Farmers Union Oil Co-op Assn. - Executive Summary

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             Risk Management Plan (RMP) - Propane 
                      Executive Summary 
                Farmers Union Oil Co-op Assn. 
                  Centerville, South Dakota 
 1. Accidental Release Prevention and Emergency Response Policies 
We at Farmer Union Oil Co-op Assn. in Centerville 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 Centerville Fire Department, which 
provides additional emergency response expertise. 
 2. Stationary Source and Regulated Substances Handled 
Our facility's primary activities include support services for crop production.  We have propane  
stored in 11,500- and 10,500-gallon interconnected tanks located at our facility in Centerville (Figure 
1).  The maximum amount stored is 18,700 gallons (78,970 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 
interconnected propane storage tank (78,970 pounds) in gaseous form over a 10-minute period.  At 
Class F atmospheric stability and 1.5 m/s wind speed, the maximum distance to an lower 
flammability level of 35 mg/L at a  
rate of 5,000 pounds per minute is is 0.35 miles (Figure 2).  This 
amount of overpressure can cause partial demolition of houses and can result in serious injury to 
people within this distance.  The estimated population within a 0.35-mile radius of this facility is 
The alternative release scenario involves a 30-minute release of propane from a product line that 
contacts an ignition source and detonates, resulting in a vapor cloud fire.  Under neutral weather 
conditions, the maximum distance to an endpoint with a lower flammability limit of 35 mg/L at a 
release rate of 5,000 pounds per minute is less than 0.06 mile (Figure 3).  The estimated population 
within a 0.06-mile radius of this facility is 150. 
    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 
Farmer Union Oil Co-op Assn. maintains a detailed record of safety information that describes the 
chemical hazards, operating parameters, and equipment designs associated with all processes 
(Appendix D). 
Process 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 
Farmer Union Oil Co-op Assn. 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). 
Farmer Union Oil Co-op Assn. 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 
Farmer Union Oil Co-op Assn. conducts documented maintenance checks on process equipment to 
ensure proper operation.  Maintenance checks are performed 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 Farmer Union Oil Co-op Assn. 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 
Farmer Union Oil Co-op Assn. 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 suitable for safe startup prior 
to placing equipment into operation. 
Compliance Audits 
Farmer Union Oil Co-op Assn. conducts compliance audits on a regular basis to determine whether 
the provisions of the plan, as set out under 40 CFR part 68, are being implemented.  Any non- 
compliance issue discovered during the audit is promptly corrected. 
Employee Participation 
Farmer Union Oil Co-op Assn. 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 f 
acility's implementation of the RMP 
particularly information resulting from process hazard analyses. 
 5. Five-year Accident History 
Farmer Union Oil Co-op Assn. has had an excellent record of preventing accidental releases over 
the last 5 years.  Due to our stringent release prevention policies, no accidental release has occurred 
during this period. 
 6. Emergency Response Plan 
Farmer Union Oil Co-op Assn. 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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