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Identifying Segments that Can Affect HCA’s Using A NPMS Data Extraction Technique. Brad Lewis Kinder Morgan Energy Partners. Code Requirement. - PowerPoint PPT Presentation
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Identifying Segments that Can Affect HCA’s Using A NPMS Data Extraction Technique
Brad LewisKinder Morgan Energy Partners
Code Requirement
§ 195.452 “…an operator must develop a written integrity management program that addresses the risks on each pipeline segment that could affect a high consequence area.”
Code Requirement
§ 195.452 “…an operator must develop a written integrity management program that addresses the risks on each pipeline segment that could affect a high consequence area.” (emphasis added)
High Consequence Areas Defined
Defining HCA’s - a key Integrity Management Program Development Objective
NPMS (National Pipeline Mapping System)
Defining HCA “impact zones”
Conclusions
Outline
High Consequence Areas
High Population Areas
Other Population Areas
Commercially Navigable Waterways
Ecological USA (14 States)
Drinking Water USA (10 States)
Source: API 1160 latest draft
Identify Potential Pipeline Impact to
HCAs(12/31/01)
1
Initial Data Gathering, Review,
and Integration
Initial Risk
Assessment
Develop BaselinePlan
(3/31/02)
2
Defining HCA’s - a keyIntegrity Management
Objective
EvaluateProgram
Reassess Risk
Update, Integrate, and Review Data
Manage Change
Perform Inspection and/or
Mitigation
Revise Inspection& Mitigation
Plan3
4
• Positional accuracy of ±500 ft has been attempted for all pipelines and LNG facilities. • Positional accuracy is: E = Excellent: within 50 ftV = Very Good: 50-300 ftG = Good: 301-500 ftP = Poor: 501-1000 ftU = Unknown
86%154,000+ miles
National Pipeline Mapping System
Direct Impact Zone – identify points at which pipeline enters and exits an HCA
Indirect Impact Zone – identify HCA’s within set proximity to the pipeline (e.g., ±100ft., ±660ft., ±1 mile) - boundaries based on operating pressure, product type, HCA type(?), etc.
Potential Transport Zone – Evaluate additional zones (beyond direct or indirect) where a rupture has potential to migrate into an HCA - analysis based on rupture volume, product type, terrain conditions, etc.
Defining HCAImpact Zones
Direct Impact Zone Identification
Direct Impact Zone Identification
Direct Impact Zone Identification
Direct Impact Zone Identification
Direct Impact Zone Identification
Direct Impact Zone Identification
Direct Impact Zone Identification
Indirect Impact Zone Identification
What about nearby HCA’s that do not intersect with the pipeline?
What type of buffer should I consider for nearby HCA’s?
Indirect Impact Zone Identification
OPS Hazardous Liquid Accident Statistics (Avg Net Loss/Accident)
0.0
200.0
400.0
600.0
800.0
1000.0
1200.0
1400.0
1600.0
1800.0
2000.0
1984 1986 1988 1990 1992 1994 1996 1998 2000 2002
Imp
act
Zo
ne
(ft)
1,352 1,670
1,028
1,238
690
929
646
510
664
586
803
1,143
976 996
726
0
200
400
600
800
1000
1200
1400
1600
1800
1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000
OPS Hazardous Liquid Accident Statistics
No. of Accidents Avg Gross Bbls/Accident
Indirect Impact Zone Identification
Indirect Impact Zone Identification
Indirect Impact Zone Identification
Indirect Impact Zone Identification
Indirect Impact Zone Identification
Indirect Impact Zone Identification
(off on a tangent)
(off on a tangent)
(off on a tangent)
(off on a tangent)
Potential TransportZone Identification
How do I address the potential for released product to migrate to a distant HCA?– Terrain surrounding the pipeline, including
drainage
Potential TransportZone Identification
Potential TransportZone Identification
Potential TransportZone Identification
Potential TransportZone Identification
[Prevention/Mitigation Section]
195.452 (i)(4) Emergency Flow Restricting Devices (EFRD). If an operator determines that an EFRD is needed on a pipeline segment to protect a high consequence area…”
Potential TransportZone Identification
leak detection/shutdown speed
commodity
rate of potential leakage
volume released
topography or pipeline profile
ignition sources
proximity to power sources
location of response personnel
terrain between the pipeline segment and HCA
benefits expected by reducing the spill size
195.452 (i)(4) EFRD determination must include:
Why go to all this work? We already smart pig this line!
Knowing all these details about the HCA’s is not going to change my integrity assessment plans.
Why not just classify the entire pipeline as an HCA pipeline?
One Final Thought
One Final Thought
One Final Thought
One Final Thought
The payoff for defining HCA’s is:– Application of repair criteria– Selection & application of
prevention/mitigation activities
Conclusions
Defining HCA “impact zones” with NPMS data is possible– Custom software required
Defining “transport zones” may require additional analysis & data collection– Determination of EFRD requirements may be satisfied as
a byproduct of the HCA Transport Zone study
Defining HCA’s should produce a large and rapid return
Further Information
Brad Lewis
Kinder Morgan Energy Partners
520/514-1065 ext. 983