Texhoma Wheat Growers, Guymon Fertilizer Plant - Executive Summary

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             Risk Management Plan (RMP) - Ammonia 
                      Executive Summary 
                 Texhoma Wheat Growers, Inc. 
                       Guymon, Oklahoma 
 
 
 1. Accidental Release Prevention and Emergency Response Policies 
We at Texhoma Wheat Growers, Inc. in Guymon 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 Guymon 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 two 12,000-gallon tanks at our facility in Guymon (Figure 1).  The maximum 
amount stored is 20,400 gallons (104,978.4 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 anhydrous ammonia storage tanks (104,978.4 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 4.6 miles (Figure 2).  The estimated 
population wi 
thin a 4.6-mile radius of this facility is 8,000. 
 
The alternative release scenario involves a release from an anhydrous ammonia product line.  The 
scenario involves the release of 7,995.83 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 50. 
 
 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 
Texhoma Wheat Growers, Inc. maintains a detailed record of safety information that describes the 
chemical hazards, operating parameters, and equipment designs associated with all proc 
esses 
(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 
Texhoma Wheat Growers, Inc. 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 
Texhoma Wheat Growers, Inc. 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 
Texhoma Wheat Growers, Inc. conducts documented maintenance checks on process equipment to 
ensure proper operation.  Maintenance checks are conducted by qualified personne 
l 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 Texhoma Wheat Growers, Inc. 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 
Texhoma Wheat Growers, Inc. 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 
Texhoma Wheat Growers, Inc. 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 
Texhoma Wheat Growers, Inc. 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 
Texhoma Wheat Growers, Inc. has had an excellent record of preventing accidental releases over the 
last 5 years.  Due to our stringent r 
elease prevention policies, no accidental release has occurred 
during this period. 
 
 6. Emergency Response Plan 
Texhoma Wheat Growers, Inc. 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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