Presentation on theme: "Flow Line Regulations 18 AAC"— Presentation transcript:
1Flow Line Regulations 18 AAC 75.047 Alaska Department of Environmental ConservationSpill Prevention and Response DivisionIndustry Preparedness Program
2What is a flow line? 18 AAC 75.990(173) "flow line" (A) means piping and associated fittings, including all valves, elbows, joints, flanges, pumps, and flexible connectors,(i) containing liquid oil;(ii) located at a production facility; and(iii) that is installed or used for the purpose of transporting oil between a well pad or marine structure used for oil production and the interconnection point with a transmission pipeline; and(B) includes all piping between interconnections, including multi-phase lines and process piping, except(i) facility oil piping; and(ii) transmission pipelines;In plain English, a flow line carries multi-phase (oil/water/gas) to or from a well head manifold or a processing center.
3Crude Oil Transmission Pipeline Protective coating & CP What isn’t a flow line?Crude Oil Transmission PipelineFlow LineFacility Oil PipingTypical size (diameter)6 – 48 inches4 – 30 inches<8 inchesPipe ContentsCrude OilMulti-phase OilOilADEC Regulation18 AAC18 AAC18 AACLeak DetectionYes (1% daily volume)NoDesign StandardYes ASME B31.4, B31.8Yes ASME B31.3, B31.4, B31.8Cathodic Protection StandardYesYes NACE RP0169, API 570Corrosion Control StandardASMEB31.4, NACE RP0169Protective coating & CPInspection StandardAPI 570Maintenance StandardASME B31.4, API 570These are state regulations, additional federal regulations apply to COTPs
5How are flow lines regulated? Design & construction standardsCorrosion monitoring & controlPreventative maintenanceLine markersRemoval from service requirementsLine supportsCompliance documentation & recordkeeping
6Design & construction standards ASME B31 series industry standards for design and construction of pipe:ASME B31.4, Pipeline Transportation Systems for Liquid Hydrocarbons and Other LiquidsASME B31.8, Gas Transmission and Distribution Piping SystemsOther “equivalent and nationally recognized standard”Design & construction standards become effective 31 December 2008 (2 year phase-in)It is assumed that most operators will follow B31.4.B31.8 is a more stringent standard which may be useful to operators who have plans for conversion to gas production or who want a higher standard.3rd option is a back door to allow for future changes.
7Corrosion monitoring & control Industry standardsASME B31.4, Chapter VIIINACE RP for external corrosion control on submerged or buried linesExternal corrosion controlProtective coatings on aboveground lines or corrosion-resistant materialInternal corrosion control programPigging, inhibitors, biocides, coatings, linings, etc.Corrosion monitoring & control requirements become effective 31 December 2007 (1 year phase-in)
8Preventative maintenance Choice – either:Use a bundled pipe with an interstitial leak detection system, orHave a preventative maintenance system in placePreventative maintenance systemConsistent with ASME or API standardsEffective 31 December 2007 (1 year phase-in)The first option is for bundled lines, where a comprehensive preventative maintenance system is problematic, but where an effective leak detection system and secondary containment is viable.
9Preventative maintenance program standards Submerged linesASME B31.4, Chapters VII through IXBuried linesASME B31.4, Chapters VII & VIIIAboveground linesAPI 570 (except Section 8) andAll preventative maintenance programs must have procedures for management of change
10Line markers, removal from service, and pipe supports One mile intervals and at each road crossingEffective 31 December 2007 (1 year phase-in)Removal from servicePig, drain, or blow pipe to remove oilEffective 31 December 2006 (now)Pipe supportsASME B31.4, Paragraph 421
11Documentation / Recordkeeping Documentation of measures taken to comply with 18 AACCorrosion controlPreventative maintenanceMaintain records for minimum of five yearsRecords must be available to ADEC upon request
12Other changes to 18 AAC 75, Article 1 that affect North Slope operations Increased prevention training and documentation requirementsRevised regulations for aboveground oil storage tanksfield-constructed oil storage tanksshop-fabricated oil storage tanksRevised regulations for facility piping
13Prevention training Moved into its own section and expanded Personnel that inspect, maintain, operate oil storage and transfer equipment must be trained regarding company and state spill prevention measuresJob descriptions and training level neededKeep training records for 5 years
14Aboveground storage tanks Two types definedField-constructed storage tankConstructed to API 650, API 12B, 12C, 12D, 12E, 12F, or 12PInspected to API 653 or API 12R1Shop-fabricated storage tankConstructed to UL 142 or similar standardInspected to API 653 or STI SP001
15Facility oil pipingNew definition: Piping and associated fittings originating from or terminating at a regulated oil storage tank or an exploration or production wellThree classes of facility oil piping, based on installation date:Before May 14, 1992 – no construction standard appliesMay 14, 1992 thru 2008 – protective coating and cathodic protection, all welded2009 or later – ASME B31.3, B31.4, or B31.8, or equivalent standard; cathodic protection per NACE standardInspection consistent with API 570 inspection standard by 2008
16Effective DatesRegulations covering design and construction – go into effect in 2009Regulations covering operations and maintenance – go into effect in 2008Remaining regulations - December 30, 2006
17Questions? Craig Wilson Industry Preparedness Program Spill Prevention and Response DivisionAlaska Department of Environmental Conservation