Flow Line Regulations

1
Flow Line Regulations

• 18 AAC 75.047

Alaska Department of Environmental
Conservation Spill Prevention and Response
Division Industry Preparedness Program
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What 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
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What isnt a flow line?
Crude Oil Transmission Pipeline Flow Line Facility Oil Piping
Typical size (diameter) 6 48 inches 4 30 inches lt8 inches
Pipe Contents Crude Oil Multi-phase Oil Oil
ADEC Regulation 18 AAC 75.055 18 AAC 75.047 18 AAC 75.080
Leak Detection Yes (1 daily volume) No No
Design Standard No YesASME B31.4, B31.8 YesASME B31.3, B31.4, B31.8
Cathodic Protection Standard No Yes YesNACE RP0169, API 570
Corrosion Control Standard No Yes ASMEB31.4, NACE RP0169 Yes Protective coating CP
Inspection Standard No Yes Yes API 570
Maintenance Standard No Yes ASME B31.4, API 570 Yes API 570
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How are flow lines regulated?

• Design construction standards
• Corrosion monitoring control
• Preventative maintenance
• Line markers
• Removal from service requirements
• Line supports
• Compliance documentation recordkeeping

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Design construction standards

• ASME B31 series industry standards for design and
  construction of pipe
• ASME B31.4, Pipeline Transportation Systems for
  Liquid Hydrocarbons and Other Liquids
• ASME B31.8, Gas Transmission and Distribution
  Piping Systems
• Other equivalent and nationally recognized
  standard
• Design construction standards become effective
  31 December 2008 (2 year phase-in)

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Corrosion monitoring control

• Industry standards
• ASME B31.4, Chapter VIII
• NACE RP0169-2002 for external corrosion control
  on submerged or buried lines
• External corrosion control
• Protective coatings on aboveground lines or
  corrosion-resistant material
• Internal corrosion control program
• Pigging, inhibitors, biocides, coatings, linings,
  etc.
• Corrosion monitoring control requirements
  become effective 31 December 2007 (1 year
  phase-in)

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Preventative maintenance

• Choice either
• Use a bundled pipe with an interstitial leak
  detection system, or
• Have a preventative maintenance system in place
• Preventative maintenance system
• Consistent with ASME or API standards
• Effective 31 December 2007 (1 year phase-in)

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Preventative maintenance program standards

• Submerged lines
• ASME B31.4, Chapters VII through IX
• Buried lines
• ASME B31.4, Chapters VII VIII
• Aboveground lines
• API 570 (except Section 8) and
• ASME B31.4, Chapters VII VIII
• All preventative maintenance programs must have
  procedures for management of change

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Line markers, removal from service, and pipe
supports

• Line Markers
• One mile intervals and at each road crossing
• Effective 31 December 2007 (1 year phase-in)
• Removal from service
• Pig, drain, or blow pipe to remove oil
• Effective 31 December 2006 (now)
• Pipe supports
• ASME B31.4, Paragraph 421
• Effective 31 December 2006 (now)

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Documentation / Recordkeeping

• Documentation of measures taken to comply with 18
  AAC 75.047
• Corrosion control
• Preventative maintenance
• Maintain records for minimum of five years
• Records must be available to ADEC upon request

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Other changes to 18 AAC 75, Article 1 that affect
North Slope operations

• Increased prevention training and documentation
  requirements
• Revised regulations for aboveground oil storage
  tanks
• field-constructed oil storage tanks
• shop-fabricated oil storage tanks
• Revised regulations for facility piping

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Prevention 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
  measures
• Job descriptions and training level needed
• Keep training records for 5 years

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Aboveground storage tanks

• Two types defined
• Field-constructed storage tank
• Constructed to API 650, API 12B, 12C, 12D, 12E,
  12F, or 12P
• Inspected to API 653 or API 12R1
• Shop-fabricated storage tank
• Constructed to UL 142 or similar standard
• Inspected to API 653 or STI SP001

15
Facility oil piping

• New definition Piping and associated fittings
  originating from or terminating at a regulated
  oil storage tank or an exploration or production
  well
• Three classes of facility oil piping, based on
  installation date
• Before May 14, 1992 no construction standard
  applies
• May 14, 1992 thru 2008 protective coating and
  cathodic protection, all welded
• 2009 or later ASME B31.3, B31.4, or B31.8, or
  equivalent standard cathodic protection per NACE
  standard
• Inspection consistent with API 570 inspection
  standard by 2008

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Effective Dates

• Regulations covering design and construction go
  into effect in 2009
• Regulations covering operations and maintenance
  go into effect in 2008
• Remaining regulations - December 30, 2006

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Questions?

• Craig Wilson
• Industry Preparedness Program
• Spill Prevention and Response Division
• Alaska Department of Environmental Conservation
• www.dec.state.ak.us/spar/ipp