houstonlogo rjilogo

The Right-to-Know Network

Back to search

Sligo Gas Plant

Parent Companies:
Enable Midstream Partners
EPA Facility ID:
100000064191
Other ID:
Facility DUNS:
46862137
Parent Company DUNS:
0

Location:

Address:
630 Union Texas Rd.
Haughton, LA 71037
County:
BOSSIER
Lat / Long:
32.516, -93.531 (Get map)
Method:
Interpolation - Map
Description:
Center of Facility
Horizonal accuracy:
12.2 m
Horizontal reference datum:
World Geodetic System of 1984
Source map scale:
24000

Owner/Operator:

Name:
Enable Midstream Partners
Phone:
(405) 525-7788
Address:
211 N. Robinson Ave
Suite 1000
Oklahoma City, OK 73102
Foreign Address:

Person responsible for RMP implementation:

Name:
Paul Brewer
Title:
Executive Vice President

Emergency contact:

Name:
Rick Oliver
Title:
Manager, Operations
Phone:
(903) 503-4156
24-hour phone:
(903) 503-4156
Ext or PIN:

Other contacts:

Facility (or company) email:
Facility phone:
(405) 525-7788
Facility (or company) URL:

Safety:

Local Emergency Planning Committee:
Bossier-Caddo Parish LEPC
Full-Time Equivalent Employees:
4
Covered by OSHA PSM:
Yes
EPCRA section 302:
Yes
CAA Title Air Operating Permit:
Yes
CAA Permit ID#:
0400-00006-V6
OSHA Star/Merit Ranking
No
Last Safety Inspection Date:
Aug. 23, 2011
Inspecting Agency:
State environmental agency
Using Predictive Filing:
No

Processes:

Sligo Gas Plant
RMP ID:
1000043565
CBI claimed:
No
Program Level:
3
NAICS:
Natural Gas Liquid Extraction (211112)
Chemical name
CAS#
Quantity (lbs.)
CBI
Flammable Mixture
00-11-11
1,550,340
No
Flammable Mixture
00-11-11
635,328
No
Public OCA Chemical
0
No
Public OCA Chemical
0
No

RMP Preparer:

Name:
C-K Associates, LLC
Address:
616 FM 1960 West
Suite 575
Houston, TX 77090
Foreign Address:

Phone:
(281) 397-9016

Latest RMP Submission:

Date:
Aug. 9, 2013
Type:
Resubmission
Reason:
5-year update (40 CFR 68.190(b)(1))
Registered:
Yes
RMP ID:
1000035597

Deregistration:

Date:
Effective Date:
Reason:
Other Reason:

2. Toxics: Worst-case

None

3. Toxics: Alternative release

None

4. Flammables: Worst-case

Some Risk Management Plan information is not provided in the available RMP data. You need to make an appointment at an EPA Reading Room In order to get access to details from the Off-Site Consequence Analysis (OCA) such as:

Instructions on how to make an EPA appointment can be found here.

Public OCA Chemical (in Sligo Gas Plant)
CBI claimed:
No
Model used:
EPA's RMP*Comp(TM)
Passive mitigation
considered:
  • None
not considered:
  • Blast walls

5. Flammables: Alternative release

Some Risk Management Plan information is not provided in the available RMP data. You need to make an appointment at an EPA Reading Room In order to get access to details from the Off-Site Consequence Analysis (OCA) such as:

Instructions on how to make an EPA appointment can be found here.

Public OCA Chemical (in Sligo Gas Plant)
CBI claimed:
No
Model used:
EPA's RMP*Comp(TM)
Passive mitigation
considered:
  • None
not considered:
  • Dikes
  • Fire wall
  • Blast walls
  • Enclosures
Active mitigation
considered:
  • None
not considered:
  • Sprinkler systems
  • Deluge systems
  • Water curtain
  • Excess flow valve

6. Five-year accident history

No Registered Accidents

7. Prevention: Program level 3

Sligo Gas Plant, Natural Gas Liquid Extraction (211112)
Prevention Program ID:
1000037877
Safety Review Date
Oct. 21, 2011, since latest RMP submission
PHA Update Date
Sept. 15, 2009, since latest RMP submission
PHA Techniques
  • HAZOP
Hazards Identified
  • Fire
  • Explosion
Process Controls
  • Relief Valves
  • Check Valves
  • Automatic Shutoffs
  • Alarms
Mitigation Systems
  • Dikes
  • Fire Walls
Monitoring Systems
  • Process Area
Changes since PHA
  • Process Controls
Training Type
  • Classrom
  • On the Job
Competency Testing
  • Written Test
  • Demonstration
  • Observation
Procedure Review Date
Jan. 18, 2013, since latest RMP submission
Training Review Date
June 2, 2011, since latest RMP submission
Maintenance Review Date
June 2, 2011, since latest RMP submission
Maintenance Inspection Date
July 1, 2011, since latest RMP submission
Equipment Tested
Yes
Management of Change Most Recent Date
March 14, 2012
Management of Change Review Date
May 16, 2011
Pre-startup Review Date
March 14, 2012
Compliance Audit Date
May 26, 2011
Compliance Audit Change Completion Date
Sept. 21, 2011
Incident Investigation Date
June 6, 2007
Incident Invest. Change Completion Date
June 15, 2007
Participation Plan Review Date
April 20, 2012
Hot Work Review Date
April 20, 2012
Contractor Safety Review Date
April 20, 2012, since latest RMP submission
Contractor Safety Eval. Date
April 16, 2013, since latest RMP submission
Sligo Gas Plant, Natural Gas Liquid Extraction (211112)
Prevention Program ID:
1000037878
Safety Review Date
Sept. 19, 2012, since latest RMP submission
PHA Update Date
Nov. 8, 2012, since latest RMP submission
PHA Techniques
  • HAZOP
Hazards Identified
  • Fire
  • Explosion
  • Overpressurization
  • Overfilling
  • Equipment failure
Process Controls
  • Relief Valves
  • Manual Shutoffs
  • Automatic Shutoffs
  • Alarms
  • Excess Flow Device
Mitigation Systems
  • None
Monitoring Systems
  • None
Changes since PHA
  • Process Controls
Training Type
  • Classrom
  • On the Job
Competency Testing
  • Written Test
  • Demonstration
  • Observation
Procedure Review Date
Jan. 18, 2013, since latest RMP submission
Training Review Date
May 15, 2008, since latest RMP submission
Maintenance Review Date
June 2, 2011, since latest RMP submission
Maintenance Inspection Date
July 1, 2013, since latest RMP submission
Equipment Tested
Yes
Management of Change Most Recent Date
April 25, 2012
Management of Change Review Date
May 16, 2011
Pre-startup Review Date
April 25, 2012
Compliance Audit Date
May 26, 2011
Compliance Audit Change Completion Date
Sept. 21, 2011
Incident Investigation Date
None
Incident Invest. Change Completion Date
None
Participation Plan Review Date
April 20, 2012
Hot Work Review Date
April 20, 2012
Contractor Safety Review Date
April 20, 2012, since latest RMP submission
Contractor Safety Eval. Date
April 16, 2013, since latest RMP submission

8. Prevention Program level 2

No Prevention Program level 2

9. Emergency response

Facility In Community Plan:
No
Facility Own Response Plan:
No
Specific Facility Response Plan:
No
Inform. Procedures in Response Plan:
No
Emergency Care in Response Plan:
No
Plan Review Date:
Response Training Date:
None
Local Response Agency:
Local Response Agency Phone:
(318) 949-9500
Subject To - OSHA EAP:
No
Subject To - OSHA HAZWOPER:
Yes
Subject To - CWA:
No
Subject To - RCRA:
Yes
Subject To - OPA:
No
Subject To - State EPCRA:
Yes
Subject To - Other:

Executive Summary

The Risk Management Plan for the Sligo Plant is being updated because of the 5 year anniversary update requirement.



ACCIDENTAL RELEASE PREVENTION AND RESPONSE POLICIES



The Sligo Plant has a long-standing commitment to worker and public safety. This commitment is demonstrated by the resources invested in accident prevention, such as training personnel and considering safety in the design, installation, operation, and maintenance of the facility processes. The Enable Midstream Partners, LP(Enable Midstream) policy is to implement reasonable controls to prevent foreseeable releases of substances.



DESCRIPTION OF THE STATIONARY SOUCE AND REGULATED SUBSTANCES



Enable Midstream operates the Sligo Plant located in Bossier Parish, Louisiana. The Sligo Plant receives raw natural gas from well production. The raw gas is dehydrated and contaminants removed. Marketable natural gas is delivered via pipelines. Natural gas liquids are extracted and stored on site. The extracted natural gas liquids include ethane, propane, butane, and a pentane-natural gasoline mixture that are delivered to market via transportation vehicles. There are no listed toxic substances which exceed their respective threshold quantities stored at this facility.



FIVE YEAR ACCIDENT HISTORY



The Sligo Plant has not had any accidental releases during the past five years that meet the criteria for an accidental release as discussed in 40 CFR 68.42.



LOCAL EMERGENCY RESPONSE COORDINATION



The Sligo Plant has coordinated its emergency response activities with the local emergency planning and response agencies as required in 40 CFR 68.12(b)(3).



GENERAL ACCIDENTAL RELEASE PREVENTION PROGRAM



The following is a summary of the accident prevention program in place at the Sligo Plant. Because plant processes are subject to EPA RMP regulations and to OSHA PSM standards, this summary addresses each of the OSHA PSM elements and describes the management system in place to implement the
accident prevention program.



Employee Participation



Enable Midstream and the Sligo Plant actively encourage all levels of employees and contract employees to participate in creating a safe work environment. This participation begins with well-established mechanisms of communication with all employees regarding covered process information. Employees are involved in maintaining PSM rule compliance based on their knowledge, skill, job responsibilities, and experience.



Process Safety Information



The Sligo Plant maintains written information intended to provide a foundation for identifying and understanding the process hazards. This information addresses chemical properties, inventories, and associated hazards, as well as for key process parameter limits and equipment design basis/configuration information. Specific departments within the plant are assigned responsibility for maintaining up-to-date process safety information.



Chemical-specific information, including exposure hazards and emergency response/exposure treatment considerations, is provided in the material safety data sheets (MSDSs). This information is supplemented, when required, by documents that specifically address known corrosion concerns and any known hazards associated with the inadvertent mixing of chemicals. In addition, the plant has documented safety-related limits for specific process parameters and ensures limit maintenance by using highly trained personnel, process controls, and monitoring and protective instrument systems.



The plant also maintains documentation that provides information about the design and construction of process equipment. Equipment information includes construction materials, design pressure, and temperature and electrical ratings. This information provides a basis for establishing inspection and maintenance activities, as well as for evaluating proposed process and facility changes to ensure that safety features in the process are not compr
omised.



Process Hazard Analysis (PHA)



The Sligo Plant has a comprehensive program to help ensure that hazards associated with the various processes are identified and controlled. Within this program, each process is systematically examined to identify hazards and ensure that adequate controls are in place to manage these hazards.



The Sligo Plant primarily uses the HAZOP and checklist methods to perform these evaluations. Combined, these techniques provide a highly structured approach where process parameters such as flow and temperature are examined for deviations from their intended design. Deviation effects are considered in order to determine resulting potential hazards while preliminary recommendations for improvement are proposed.



The PHA team findings are promptly and systematically addressed. The Sligo Plant assures that the recommendations are documented and resolved in a timely manner. This documentation includes the actions to be taken and a written schedule of completion dates. The plant also provides proof of communication with operating, maintenance, and other employees whose work assignments are in the process and who may be affected by the recommendations.



To help ensure that the process controls and/or process hazards do not eventually deviate from the original design safety features, the plant periodically updates and revalidates the hazard analysis results. These periodic reviews will be conducted at least every five years by the PHA team.



Operating Procedures



The Sligo Plant maintains written procedures that address various modes of process operations, such as (1) initial startup, (2) normal operations, (3) temporary operations, (4) emergency shutdown, (5) normal shutdown, and (6) startup following a turnaround or after an emergency shutdown. These procedures can be used as a reference by experienced operators and provide a consistent training basis for new operators. Operating procedures are periodically reviewed and
certified as current. When a process change occurs, operating procedures are revised as necessary through the management of change process.



Training



To complement the written process operation procedures, the Sligo Plant has implemented a comprehensive training program for all employees. New employees receive job specific basic training in plant operations. Employee training includes emphasis on safety and health hazards, emergency shutdown operations, and safe work practices. Operators demonstrating adequate knowledge to safely perform duties and tasks are allowed to work independently.



Hot Work Permit



The Sligo Plant issues a hot work permit for all hot work operations conducted on or near a covered process. The Sligo Plant provides Hot Work Permit training to all plant employees. Copies of issued work permits are maintained in Operations and Maintenance for a period of 1 year following completion of work.



Contractors



The Sligo Plant periodically uses contractors to perform maintenance or repair, turnaround, major renovations, or specialty work on or adjacent to a covered process. Because some contractors work on or near process equipment, the plant has procedures in place to ensure that contractors (1) are trained in the work practices necessary to safely perform his/her job, (2) follow the safety rules of the location including the safe work practices, (3) advise the plant of any unique hazards presented by the contractor, and (4) notify the facility of all illnesses and injuries that occur in the process areas.



Pre-Startup Safety Reviews (PSSRs)



The Sligo Plant conducts a PSSR for any facility modification that requires a change in the process safety information. The purpose of the PSSR is to ensure that safety features, procedures, personnel, and equipment are appropriately prepared for startup prior to placing the equipment into service. This review provides an additional check to make sure that construction and equipment are
in accordance with design specification, that adequate safety, operating, maintenance, and emergency procedures are in place, and that training of each employee involved in operating the process or equipment has been completed. A standard checklist is used to document compliance.



Mechanical Integrity



The Sligo Plant has well-established programs, procedures and practices that are required to ensure that equipment used to process, store, or handle lightly hazardous chemicals and/or flammable gas or liquid is designed, constructed, installed, and maintained to minimize the risk of a release. Equipment examples include vessels, storage tanks, piping systems, and relief and vent systems with associated emergency shutdown systems and controls (i.e., monitoring devices, sensors, alarms, and interlocks).



Maintenance personnel receive training on (1) an overview of the process, (2) a review of the process hazards, and (3) the procedures applicable to the employee?s job tasks to ensure that the employees can perform the job tasks in a safe and satisfactory manner. Process equipment inspection and testing follows recognized and generally accepted good engineering practices. Equipment deficiencies that are outside of acceptable limits are corrected before further use or in a safe and timely manner when necessary means are taken to ensure safe operation.



Management of Change



The Sligo Plant has a comprehensive system to manage and document changes to all covered processes. A systematic approach is followed to control and manage facility changes in order to minimize the possibility that such changes will have an adverse impact on personnel safety, equipment, or the environment. Employees involved in process operations and maintenance and contract employees whose job tasks might be affected by process changes are informed of and trained in the change prior to process start-up.



Incident Investigation



The Sligo Plant promptly investigates all incidents that
resulted in, or reasonably could have resulted in, a fire/explosion, toxic gas release, major property damage, environmental loss, or personal injury. An incident investigation is initiated as promptly as possible to thoroughly investigate and analyze the incident. This investigation is lead by an incident investigation team consisting of those with appropriate knowledge and experience in the process. The findings and recommendations made by the incident investigation team are promptly addressed and resolved in a timely manner. The final resolution of each finding or recommendation is documented, and the investigation results are reviewed with all employees (including contractors) who could be affected by the findings.



Emergency Planning and Response



The plan for emergencies at the Sligo Plant is to contact local fire and emergency response coordinators. The Sligo Plant has already coordianted with the Haughton Fire Department for such emergencies. Sligo Plant personnel are not first responders. The intent is to facilitate the prompt evacuation of employees when necessary and to account for all personnel.



Compliance Audits



To help ensure that the accident prevention program is properly functioning, the Sligo Plant periodically conducts an audit to determine whether the procedures and practices required by the accident prevention program are being implemented. The audit team includes those knowledgeable in the process, operations personnel, and at least one person trained in audit techniques and practices. The audit team develops findings and corrective actions are tracked until they are complete. The final resolution of each finding is documented, and the two most recent audit reports are retained.



PLANNED CHANGES TO IMPROVE SAFETY



Enable Midstream is committed to operating the Sligo Plant in a safe manner for workers, the public, and the environment. Enable Midstream personnel have an opportunity to make suggestions that could improv
e the safety of this facility during monthly regional safety meetings. Enable Midstream will also conduct compliance audits and hazard reviews as required and make improvements to safety based on findings of the audits and reviews.