Leak detection for Liquid Pipelines - Lots of talk – How well can it really work?

U.S. Department of Transportation

Pipeline and Hazardous Materials Safety Administration

Harold Winnie, CATS Manager (Central Region)

Leak detection for Liquid Leak detection for Liquid Pipelines - Pipelines - Lots of talk – How Lots of talk – How

well can it really work?well can it really work?

Pipeline Safety Trust Conference November 2011

New Orleans, LA



AgendaAgenda

• Protecting People and Environment• Federal Code 49 CFR part 195• §195.444 CPM leak detection• Advisory Bulletin 10-01 • §195.446 Control room management • API 1130• Resources



PHMSA's approach to PHMSA's approach to protecting people and the protecting people and the

environment.environment.• Pipeline leak detection is one of the many layers

of protection• Operators required to deploy a comprehensive

set of safety measures to protect the public and the environment – effective means of identifying and responding to

hazardous liquid pipeline leaks at the earliest possible time.

• Pipeline operators are continuously improving the cumulative performance of these interconnected layers of protections – including advances in leak detection systems.



Protections IncludeProtections Include– Customized leak detection technology deployment; – Periodic risk-based assessment and defect repair

prioritized by environmental and safety consequences;

– Corrosion management; – Pipeline right-of-way surveillance; – Public awareness activities resulting in enhanced

citizen leak condition recognition and response; – Emergency preparedness and coordinated response,

including ongoing liaison efforts with emergency responders;

– A review and incorporation of lessons learned from accident analyses and investigations.



Direct Regulatory References Direct Regulatory References CPMCPM

• 195.2 Definitions, Computation Pipeline Monitoring

• 195.134 Design Requirements, CPM Leak Detection

• 195.444 Operation and Maintenance, CPM Leak Detection

• 195.452(i)(1) Integrity Management, General Requirements

• 195.452(i)(3) Integrity Management, Leak Detection

• 195.452(i)(4) Emergency Flow Restricting Devices



Federal Code 49 CFR Part 195Federal Code 49 CFR Part 195

§195.444 CPM leak detection.

• Each computational pipeline monitoring (CPM) leak detection system installed on a hazardous liquid pipeline transporting liquid in single phase (without gas in the liquid) must comply with API 1130 in operating, maintaining, testing, record keeping, and dispatcher training of the system.



Advisory Bulletin ADB-10-01Advisory Bulletin ADB-10-01• Advising and reminding hazardous liquid

pipeline operators – importance of prompt and effective leak detection capability – in protecting public safety and the environment.

• Operating plans and procedures should include the performance of an engineering analysis – determine if a computer-based leak detection system is

necessary to improve leak detection performance and line balance processes.

• Engineering analysis determines a system would not improve leak detection performance and line balance processes – the operator should perform the periodic line balance

calculation process outlined herein and take any other necessary actions required to ensure public safety and protect the environment.



§195.446 Control Room §195.446 Control Room Management.Management.

(a) Each operator must have and follow written control room management procedures that implement the requirements of this section.– Operator must develop the procedures no later than August 1,

2011, and must implement according to the following schedule. – The procedures required by paragraphs (b), (c)(5), (d)(2) and (d)

(3), (f) and (g) implemented no later than October 1, 2011. – The procedures required by paragraphs (c)(1) through (4), (d)(1),

(d)(4), and (e) implemented no later than August 1, 2012. – The training procedures required by paragraph (h) must be

implemented no later than August 1, 2012, except that any training required by another paragraph of this section must be implemented no later than the deadline for that paragraph.



§195.446§195.446• (a) General• (b) Roles and responsibilities.• (c) Provide adequate information• (d) Fatigue mitigation• (e) Alarm management• (f) Change management• (g) Operating experience• (h) Training• (i) Compliance validation• (j) Compliance and deviations.



API 1130 API 1130 4.2.1 Performance Metrics 4.2.1 Performance Metrics

• Selection of a CPM system for a given pipeline involves evaluation of the required and expected (or estimated) performance of the system.

• The following categorizes and describes performance metrics for selection consideration. – Reliability. – Sensitivity. – Accuracy. – Robustness.



Other Documents Other Documents

• API 1149 Pipeline Variable Uncertainties' and Their Effect on Leak Detectability

• CSA Z662 Oil and Gas Pipeline Systems



Available ResourcesAvailable Resources

• PHMSA Website:

http://www.phmsa.dot.gov

• National Pipeline Mapping System:

http://www.npms.phmsa.dot.gov/

• Stakeholder Communications:

http://primis.phmsa.dot.gov/comm/

• Federal Regulations:

http://www.gpoaccess.gov/cfr



Thank you!

Leak detection for Liquid Pipelines - Lots of talk – How well can it really work?

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