Henderson Community Co-op - Executive Summary

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            Risk Management Plan (RMP) - Combined 
                      Executive Summary 
             Henderson Community Coop Association 
                     Henderson, Nebraska 
 1. Accidental Release Prevention and Emergency Response Policies 
We at Henderson Community Coop in Henderson 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 Henderson Fire Department, w 
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 anhydrous 
ammonia stored in two 30,000-gallon, two 11,000-gallon, one 26,000-gallon, and one 18,000-gallon 
interconnected  tanks at our facility in Henderson (Figure 1, ammonia).  The maximum amount 
stored is 107,100 gallons (551,136.6 pounds) at the maximum fill capacity of 85 %. 
We also have propane stored in two 18,000-gallon interconnected tanks  located at our facility in   
Henderson (Figure 1, propane).  The maximum amount stored is 30,600 gallons (129,223.8  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 ammonia and propane facility.  The following details these scenarios. 
           3.1     Ammonia 

he worst case release scenario involves a catastrophic release of the entire contents of the 
interconnected anhydrous ammonia storage tanks (551,136.6 pounds) in gaseous form over a 10- 
minute period.  At Class F atmospheric stability, 1.5 m/s wind speed, and a urban  topography, the 
maximum distance to a toxic endpoint of 0.14 mg/L is 9.9 miles (Figure 2).  The estimated 
population within a 9.9-mile radius of this facility is 3,000. 
The alternative release scenario involves a release from an anhydrous ammonia product line.  The 
scenario involves the release of 7616.42 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 200. 
           3.2     Propane 
The worst case release scenario involves a catastrophic release of the entire contents of the 
interconnected propane storage  
tank (129,223.8 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 endpoint of 
1 psi overpressure is 0.41 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 0.41-mile radius of this facility is 500. 
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 explosion.  Under neutral 
weather conditions, the maximum distance to an endpoint of 1 psi overpressure is 0.12  mile (Figure 
3).  The estimated population within a 0.12 -mile radius of this facility is 30. 
 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 fol 
lowing sections briefly describe the elements 
of the release prevention program that is in place at our stationary source. 
Process Safety Information 
Henderson Community Coop 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 effectively.  Any findings from the hazard analysis are addressed in a 
timely manner. 
Operating Procedures 
Henderson Community Coop 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. 
Henderson Community Coop has a comprehensive training program in place to ensure that 
es who are operating processes are competent in the operating procedures associated with 
these processes. 
Mechanical Integrity 
Henderson Community Coop 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. 
Management of Change 
Written procedures are in place at Henderson Community Coop 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 offere 
d training to deal with it. 
Pre-startup Reviews 
Henderson Community Coop 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 
Henderson Community Coop 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 
Henderson Community Coop 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 faci 
lity's implementation of the RMP, particularly 
information resulting from process hazard analyses. 
 5. Five-year Accident History 
Henderson Community Coop 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 
Henderson Community Coop 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.
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