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THIBODAUX WATER PLANT

Parent Companies:
CITY OF THIBODAUX
EPA Facility ID:
100000147049
Other ID:
Facility DUNS:
0
Parent Company DUNS:
0

Location:

Address:
110 E. BAYOU LANE
THIBODAUX, LA 70302
County:
LAFOURCHE
Lat / Long:
29.799, -90.809 (Get map)
Method:
Interpolation - Satellite
Description:
Center of Facility
Horizonal accuracy:
40 m
Horizontal reference datum:
North American Datum of 1983
Source map scale:

Owner/Operator:

Name:
CITY OF THIBODAUX
Phone:
(985) 446-7231
Address:
110 E. BAYOU LANE
P.O. BOX # 5418
THIBODAUX, LA 70302 -5418
Foreign Address:

Person responsible for RMP implementation:

Name:
Dion E. Wright
Title:
Water Plant Manager

Emergency contact:

Name:
Dion E. Wright
Title:
Water Plant Manager
Phone:
(985) 446-7236
24-hour phone:
(985) 446-7236
Ext or PIN:

Other contacts:

Facility (or company) email:
Facility phone:
(985) 446-7231
Facility (or company) URL:

Safety:

Local Emergency Planning Committee:
Lafourche Parish LEPC
Full-Time Equivalent Employees:
7
Covered by OSHA PSM:
No
EPCRA section 302:
Yes
CAA Title Air Operating Permit:
No
CAA Permit ID#:
OSHA Star/Merit Ranking
No
Last Safety Inspection Date:
Jan. 23, 2018
Inspecting Agency:
LWCC
Using Predictive Filing:
No

Processes:

Unspecified process
RMP ID:
1000086759
CBI claimed:
No
Program Level:
2
NAICS:
Water Supply and Irrigation Systems (22131)
Chemical name
CAS#
Quantity (lbs.)
CBI
Chlorine
7782-50-5
12,000
No
Public OCA Chemical
0
No

RMP Preparer:

Name:
Dondi Troxler
Address:
207 Beau Place Blvd.
Des Allemands, LA 70030
Foreign Address:

Phone:
(504) 275-4109

Latest RMP Submission:

Date:
April 11, 2018
Type:
Resubmission
Reason:
Voluntary update (not described by any of the above reasons)
Registered:
Yes
RMP ID:
1000069222

Deregistration:

Date:
Effective Date:
Reason:
Other Reason:

2. Toxics: 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 Unspecified process)
CBI claimed:
No
Percent weight:
Physical state:
Gas liquified by pressure
Model used:
EPA's RMP*Comp(TM)
Release duration (mins):
10.00
Wind speed (meters per sec):
1.5
Stability class:
F
Topography:
Urban
Passive mitigation
considered:
  • Enclosures
not considered:
  • Dikes
  • Berms
  • Drains
  • Sumps

3. Toxics: 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 Unspecified process)
CBI claimed:
No
Percent weight:
Physical state:
Gas
Model used:
EPA's RMP*Comp(TM)
Wind speed (meters per sec):
1.50
Stability class:
F
Topography:
Urban
Passive mitigation
considered:
  • Enclosures
not considered:
  • Dikes
  • Berms
  • Drains
  • Sumps
Active mitigation
considered:
  • Scrubbers
  • Emergency shutdown
not considered:
  • Sprinkler systems
  • Deluge systems
  • Water curtain
  • Neutralization
  • Excess flow valve
  • Flares

4. Flammables: Worst-case

None

5. Flammables: Alternative release

None

6. Five-year accident history

No Registered Accidents

7. Prevention: Program level 3

No Prevention Program level 3

8. Prevention Program level 2

, Water Supply and Irrigation Systems (22131)
Prevention Program ID:
1000054412
Safety Review Date
April 6, 2018, since latest RMP submission
PHA Update Date
, since latest RMP submission
Safety Regulations
  • None
Hazards Identified
  • Toxic Release
  • Hurricanes
Process Controls
  • Scrubbers
  • Manual Shutoffs
  • Automatic Shutoffs
  • Alarms
  • Emergency Power
Mitigation Systems
  • None
Monitoring Systems
  • Process Area
Changes since PHA
  • Increased Inventory
Training Type
  • Classroom
  • On the Job
Competency Testing
  • Written Test
  • Demonstration
  • Observation
Procedure Review Date
Nov. 16, 2017, since latest RMP submission
Training Review Date
Nov. 16, 2017, since latest RMP submission
Maintenance Review Date
Aug. 23, 2017, since latest RMP submission
Maintenance Inspection Date
Aug. 23, 2017, since latest RMP submission
Equipment Tested
Yes
Management of Change Most Recent Date
Management of Change Review Date
Pre-startup Review Date
Compliance Audit Date
Sept. 7, 2017
Compliance Audit Change Completion Date
None
Incident Investigation Date
None
Incident Invest. Change Completion Date
None
Participation Plan Review Date
Hot Work Review Date
Contractor Safety Review Date
, since latest RMP submission
Contractor Safety Eval. Date
, since latest RMP submission

9. Emergency response

Facility In Community Plan:
Yes
Facility Own Response Plan:
No
Specific Facility Response Plan:
Yes
Inform. Procedures in Response Plan:
No
Emergency Care in Response Plan:
Yes
Plan Review Date:
Response Training Date:
Nov. 16, 2017
Local Response Agency:
Local Response Agency Phone:
(985) 446-5551
Subject To - OSHA EAP:
No
Subject To - OSHA HAZWOPER:
No
Subject To - CWA:
No
Subject To - RCRA:
No
Subject To - OPA:
No
Subject To - State EPCRA:
Yes
Subject To - Other:

Executive Summary

30370 LDEQ Facility ID Number



EXECUTIVE SUMMARY







The Thibodaux Water Plant stores a maximum of four one-ton cylinders of chlorine gas adjacent to the operations building. The storage area consists of an enclosed building. There are chlorine danger signs on the building. Only one chlorine gas container is in operation at any time with another on stand-by. The chlorine gas flows through a Regal switch-over chlorine regulator and is piped to rotameters. It is mixed with water and then piped to the two treatment plants. The chlorine gas flows through a vacuum system that shuts off the gas if there is any condition that breaks off the vacuum such as a gas leak. A chlorine sensor and alarm system is located where the two one-ton containers are situated. This system will alert the operator on duty of a chlorine release. When an empty one ton container is being taken out of operation, there are two water plant operator personnel present, the individual performing the task and other as a emergency response individual.





The Worst Case Scenario was a full release of a one ton cylinder. Chlorine release quantity, release rate, release duration, wind, speed, distance to end point, residential population and public receptor impact were calculated using RMP Comp. The Alternate Case Scenario was the Ruptured Disk/Relief Valve failure resulting in 1000 pounds of chlorine gas.



The Prevention Program consists of the following items: a. Keep all equipment dealing with the chlorine system in good working condition, b. Train the water plant operators in prevention and emergency procedures, c. Respond quickly to the near accident occurrences and determine the causes and corrective actions needed, d. Run Hazard reviews and Compliance Audits at least on a yearly basis.





Procedures are in place to ensure the integrity of the cylinders being delivered and store on site. The procedures to change cylinders is review periodically with plant personnel. All operators
are required to earn at least a Class III Louisiana Treatment Certification. The hazards associated with chlorine are covered in the certification training manuals.





Planned changes to improve safety: 1. Continue training of all water plant personnel in chlorine knowledge,safety, release prevention and emergency procedures, and 2. Further investigate means of limiting the distance that the chlorine gas will travel.