CELEBRATING 10 YEARS. Advancing Safety Leadership in the Dredging and Marine Construction Industry

Transcription

1 CELEBRATING 10 YEARS Advancing Safety Leadership in the Dredging and Marine Construction Industry

2 Analysis of Pipeline Crossings U.S. Army Corps of Engineers Project Calcasieu River & Pass, LA Operations and Maintenance Location Led by

3 Calcasieu River & Pass Project Background and Scope Background The Calcasieu River is a 68-mile deep-draft navigation channel located in Southwest Louisiana. The channel provides deep-draft access to the Port of Lake Charles, the 13 th largest port in the nation based on tonnage. Northern Boundary (MP 36.0) just south of I-10, Lake Charles, LA Southern Boundary (MP 32.0) extends into the Gulf of Mexico Authorized Dimensions Jetties to Mile (-32.0) in the Gulf of Mexico: -42 feet MLG by 800 feet Jetties to Mile 36.0 in Lake Charles: -40 feet MLG by 400 feet Scope Bar Channel requires dredging one to two times per fiscal year. Inland reaches between Mile 5.0 and 28.0 require dredging every other year, alternating between: Mile 5.0 to Mile 17.0 Mile 17.0 to Mile 28.0 Upper most reaches between Mile 28.0 and Mile 36.0 require dredging every 5 to 8 years. Partner/Sponsor: Lake Charles Harbor and Terminal District Source: U.S. Army Corps of Engineers, New Orleans District Website

4 Scope of Analysis Mile 17.0 to Mile 36.0 NPMS identified 24 pipeline crossings in work zone. TransCanada Pipeline Crossing In Construction USACE identified the 24 pipeline crossings in NPMS. USACE identified 9 other crossings that require additional research Harvest Proposed Pipeline. SONRIS also shows a permit for Harvest at approximately Unclear if pipeline was actually constructed TransCanada Pipeline in construction. Permits for the pipeline found in SONRIS. (Pipeline could be completed; yellow line is USACE information; purple lines from engineering analysis) Shell Pipeline Westward Ho 36 pipeline. This pipeline was permitted (SONRIS) but never constructed. Verified project was cancelled via Google News Search USACE plans show Calcasieu Refining has 4 pipelines crossing the channel. NPMS shows only one pipeline. Shell Pipeline Westward Ho Project Cancelled

5 Scope of Analysis Mile 17.0 to Mile Crossing (cannot read data) but no pipelines indicated in NPMS or SONRIS. More investigation warranted Crossing (cannot read data) but no pipelines indicated in NPMS or SONRIS. More investigation warranted Bayou Bridge 24 pipeline under construction. Permit is in SONRIS Gulf State Pipeline No record in NPMS or SONRIS. Is this an underground abandoned pipeline or overhead power crossing? Crossing (cannot read data) Plans indicate 8 pipeline crossings. No record of crossing in NPMS or SONRIS Crossing More Investigation Warranted Unknown Pipeline Crossings

6 Scope of Analysis Mile 17.0 to Mile 36.0 Production and Non-Regulated Gathering Pipelines Not jurisdictional to Part 190 to Part 199 Regulations vary state to state Infrastructure may not be readily available or accurate Hackberry Production Area - USACE Hackberry Production Area - SONRIS

7 Scope of Analysis Mile 17.0 to Mile 36.0 Spoil Area Analysis - Disposal Area 22 Disposal Area 22 Hackberry Production Area Yellow line in channel USACE. Red and Purple lines are approximate locations by geo-referencing SONRIS Data. From SONRIS Data and detail review of imagery, it appears that production infrastructure is in Disposal Area 22.

8 Scope of Analysis Mile 17.0 to Mile 36.0 Spoil Area Analysis - Disposal Area 17 Disposal Area 17 Yellow line in channel and disposal area - USACE. USACE data shows a portion of a pipeline in the disposal area. Pale green line at north end of disposal area - USACE. No indication what is referenced does not match data in NPMS and SONRIS. Blue lines in disposal area NPMS, indicating that the USACE data is incomplete. There could be some production infrastructure in the disposal area. Very hard to accurately geo-reference the SONRIS data to imagery.

9 Scope of Analysis Mile 17.0 to Mile 36.0 Spoil Area Analysis - Disposal Area 13 Disposal Area 13 Yellow line in channel and south of the disposal area - USACE. Pink line NPMS; confirms USACE s pipeline identification. The concern is the placement of the spill box near the pipeline easement. Will the discharge from the spill box remove cover from the 42 diameter natural pipeline or destabilize the solid, causing coating or other physical damage to the pipeline?

10 Scope of Analysis Mile 17.0 to Mile 36.0 Spoil Area Analysis - Disposal Area 12B Yellow line in channel and near disposal area - USACE. Pink and Red lines - NPMS. Pink line is a non-filled, Williams HVL pipeline system. Red line is an active, 42 diameter Kinder Morgan natural gas pipeline. Disposal Area 12B

11 Scope of Analysis Mile 17.0 to Mile 36.0 Spoil Area Analysis - Disposal Area 11 Disposal Area 11 Yellow line in channel and across the disposal area - USACE Blue lines NPMS; confirms USACE s data.

12 Scope of Analysis Mile 17.0 to Mile 36.0 Spoil Area Analysis - Disposal Area 9 Yellow line in channel and across the disposal area - USACE USACE only shows 1 pipeline crossing the disposal area but does show 3 known (confirmed in NPMS) pipelines and one unknown pipeline in the channel. Orange Line is a Targa, active natural gas pipeline. White Line is an Enterprise HVL (Ethane) pipeline. Also concerned about the pipelines at the north end of the disposal area. The contractor cannot use that land area to stage equipment. Disposal Area 9

13 Scope of Analysis Mile 0.0 to Mile 17.0 National Pipeline Mapping System (NPMS) identified 6 pipeline crossings in the work zone. USACE USACE identified 2 pipeline crossings shown in NPMS. USACE identified 1 other pipeline near the channel that requires additional research Kinetica Energy Express Natural Gas Pipeline (RED) and ANR Natural Gas Pipelines (WHITE) , and Enlink: Bridgeline Holdings natural gas pipeline systems (PURPLE) Cheniere Creole Trail Natural Gas pipeline. This line was identified by USACE (PINK-NPMS / YELLOW-USACE). NPMS

14 Scope of Analysis Mile 0.0 to Mile 17.0 USACE NPMS Colombia Gulf 12 Natural Gas Pipeline. This line was identified by USACE (WHITE- NPMS / YELLOW-USACE) and Natural Gas Pipeline of America (BLUE) 7. USACE indicates a Dept. of Energy 36 diameter pipeline running parallel to the channel on the west side of the disposal area. This line is NOT in NPMS.

15 Scope of Analysis Mile 0.0 to Mile 17.0 Spoil Area Analysis - Disposal Area 0 Yellow line in channel - USACE Cheniere 42 Natural Gas Pipeline. USACE does NOT show the pipeline extending into the disposal area. Bridgeline Holdings pipelines are in proximity to the disposal area. Should be concerned if the dredger stages or parks equipment in the right of way. Disposal Area 0

16 Appendix Brief Summary of Pipeline Federal Regulations Applicable to Dredging Operations

17 CFR Title 49 Transportation Subchapter D Pipeline Safety Parts 190 to 199 Primary Safety Requirements Part 192 Transportation of natural and other gas by pipeline: minimum federal safety standards Part 195 Transportation of Hazardous Liquids by pipeline Part 196 Protection of underground pipelines from excavation activity National Pipeline Mapping System Gas Requirements: Provide geospatial data, attributes, metadata and transmittal letter per NPMS Operator Standards Manual. Must also include operator name, address, and an employee name and contact information Information must be submitted each year, on or before MARCH 15, representing assets as of December 31 of the previous year. Hazardous Liquid Requirements: Provide geospatial data, attributes, metadata and transmittal letter per NPMS Operator Standards Manual. Must also include operator name, address, and an employee name and contact information Information must be submitted each year, on or before JUNE 15, representing assets as of December 31 of the previous year. Dredging Implication: Time delay for providing updated data to the NPMS. A new, natural gas pipeline commissioned in January may not be in the NPMS data base for 14 months. Pipelines that are constructed, but not commissioned, are not required to submit NPMS data until commissioned.

18 CFR Title 49 Transportation Subchapter D Pipeline Safety Continued Pipeline Design Gas: Pipe must be designed/installed with adequate protection to withstand anticipated external pressures and loads that will be imposed on the pipe after installation. Hazardous Liquids: and Similar to the natural gas code but additional detail, must account external pressures and loads on the pipe after installation. Dredging Implication: Increasing the cover (dredge material spoil placement) over a pipeline may be detrimental to the integrity of the pipeline. The pipeline operator s engineering and land departments should be consulted prior to adding fill on top of a pipeline. Construction equipment crossing(s) should be evaluated by the pipeline operator s engineering department or qualified individual. Equipment crossing should only be at designed locations after the appropriate analysis and temporary crossing is constructed.

19 CFR Title 49 Transportation Subchapter D Pipeline Safety Continued Pipeline Construction - Cover Hazardous Liquids: Pipe must be installed so the cover between the top of pipe and. Gas: Similar to the Hazardous Liquids Code Dredging Implication: These cover requirements are for initial construction only. The actual cover may change over time. A contractor should never assume the depth of cover of any pipeline or pipeline crossing.

20 CFR Title 49 Transportation Subchapter D Pipeline Safety Continued Pipeline Operation and Maintenance Gas: only addresses underwater inspections in the Gulf of Mexico and its inlets Hazardous Liquids: (b)(1) -.operator discovers any condition that could adversely affect the safe operation of its pipeline system, it must correct the condition within a reasonable time (b) Except for offshore pipelines, each operator shall, at intervals not exceeding 5 years, inspect each crossing under a navigable waterway to determine the condition of the crossing. Dredging Implication: Never assume a depth of cover on a pipeline river crossing. Older pipeline river crossings that have been exposed are typically repaired with concrete mats or other protective barriers. The protective barriers are designed to protect the pipeline from regular navigation, not to protect the pipeline from dredging operations.

21 Appendix Typical Pipeline River Crossing Practices

22 Directional Drilling Typically used in new or replacement pipeline crossings Lower impact to navigation Lower maintenance cost from bank erosion and river bottom erosion Less concern about future channel widening or deepening

23 Directional Drilling Typical As-Built of a Directionally Drilled Pipeline Crossing

24 Open Cut Construction contractor excavated a ditch from bank to bank. Pipeline was installed with sags and overbends to conform to the ditch profile. Depth of cover could be less than 5 feet. Pipeline could be installed with large, concrete anchors. Method not typically used for new crossings, started to be phased-out in the 1990 s.

25 Open-Cut Typical As-Built and Record of an Open-Cut River Crossing

26 Open-Cut Typical Pipeline River Weights Designed to keep the pipeline from floating, not to protect it from damage Pipeline crossing abandoned in place would still have the weights on the pipe and could damage the dredging equipment.

27 FOR MORE INFORMATION OR ANY QUESTIONS, PLEASE CONTACT: INDUSTRY CO-CHAIR Devon Carlock VP of Safety & Government Relations Cottrell Contracting Corporation Office: (757) MANAGING DIRECTOR Michael Gerhardt Vice President Dredging Contractors of America Direct: (202)