HOUSTON, TEXAS1 Protection of DOT Regulated Pipelines During Construction and Repair Activities ENGINEERING SERVICES LP HOUSTON, TEXAS Engineering Specification

HOUSTON, TEXAS2 Pipeline Protection During Construction/Repair Activities u SCOPE AND INTENT –Scope »Provides requirements for protection of LCCC pipelines during construction and repair activities performed by the Company, Company contractors, or other owner-users of the right-of-way. –Intent »Provide engineering methods to prevent damage to pipelines and pipeline components (above and below ground).

HOUSTON, TEXAS3 Pipeline Protection During Construction/Repair Activities u REFERENCES –ANSI B31.4, Hazardous Liquid Pipelines –ANSI B31.8, Gas Transmission Pipelines –API RP 1102, SteelPipelines Crossing Railroads and Highways –API RP 1109, Marking Liquid Petroleum Pipeline Facilities –LCCC Engineering Specification, Corrosion Control and Monitoring

HOUSTON, TEXAS4 Pipeline Protection During Construction/Repair Activities u DEFINITIONS –Carrier pipe –Casing pipe –Load Bearing Devices –Pipeline Markers –Protective Barriers –Louisiana One Call –Pipe Pad

HOUSTON, TEXAS5 Pipeline Protection During Construction/Repair Activities u GENERAL REQUIREMENTS –Markers for Buried Pipelines »Design and install in accordance with API RP »Place directly above the pipeline whenever possible. »Place along the pipeline at designated intervals, at all road crossings, river crossings, at all entrances to the pipeline right-of-way, and at any change in direction of the pipeline. »Use adequate number of markers to allow other right-of-way owner-users to locate pipe by line of sight.

HOUSTON, TEXAS6 Pipeline Protection During Construction/Repair Activities u GENERAL REQUIREMENTS (Continued) –Protective Barriers »Locate barriers to protect above ground equipment such as regulator stations, metering stations, and vent pipes. »Design barrier locations to allow free access to vehicular traffic on the right-of-way, if necessary.

HOUSTON, TEXAS7 Pipeline Protection During Construction/Repair Activities u GENERAL REQUIREMENTS (Continued) –Load Bearing Devices »Use heavier wall pipe in lieu of load bearing devices if possible. »Concrete tiles are preferred to steel casing. »Specify 3000 psi concrete for concrete tiles. »Specify red color for concrete tiles. »Specify tile width to be at least 1.5 x pipe diameter. »Install tiles at least 1.5 x pipe diameter above the top of the pipe.

HOUSTON, TEXAS8 Pipeline Protection During Construction/Repair Activities u GENERAL REQUIREMENTS (Continued) –Preventing accidental damage to other owner- users equipment »Use Louisiana One Call to locate and mark buried pipelines. »Call other owner-users and ask them to locate and mark their underground pipelines.

HOUSTON, TEXAS9 Pipeline Protection During Construction/Repair Activities u GENERAL REQUIREMENTS (Continued) –Review and follow instructions in the Company Warehousing and Purchasing Procedure for handling materials of construction during transportation. –Review and follow instructions in the Company Corrosion Control and Monitoring Specification for handling pipe, coating material, and consumables during construction.