Post MAOP Reconfirmation Activities David Alleshouse, PMP Laura Wiesyk, PE Senior Project Manager Senior Engineer, IVP Gas Transmission Systems, Inc. Southern Company Gas May 2 nd , 2 0 1 9
Anticipated Code Updates § 192.607 Verification of Pipeline Material § 192.624 Maximum allowable operating pressure verification The information contained herein is proprietary and confidential to Gas Transmission Systems, Inc. 2 (GTS) and shall not be released or disclosed to any party without prior written approval of GTS
Southern Company Info The information contained herein is proprietary and confidential to Gas Transmission Systems, Inc. 3 (GTS) and shall not be released or disclosed to any party without prior written approval of GTS
Our MAOP Program Today The information contained herein is proprietary and confidential to Gas Transmission Systems, Inc. 4 (GTS) and shall not be released or disclosed to any party without prior written approval of GTS
Station Upsets Potential Asset Safety Consequences to: Employee Public Safety Safety Station Malfunctions Neglected Human Error Corrective Work Improper Incorrect Set-Points Preventive Maintenance Poor Design The information contained herein is proprietary and confidential to Gas Transmission Systems, Inc. 5 (GTS) and shall not be released or disclosed to any party without prior written approval of GTS
Representative Experience: MAOP Reconfirmation • GTS has extensive experience in MAOP Reconfirmation for pipelines and stations • Performed MAOP Reconfirmation for thousands of miles of pipelines and hundreds of stations The information contained herein is proprietary and confidential to Gas Transmission Systems, Inc. 6 (GTS) and shall not be released or disclosed to any party without prior written approval of GTS
Pipeline: MAOP Reconfirmation Records Engineering MAOP Post MAOP Planning PFL / SFL Build Review Reconfirmation Analysis Reconfirmation Logic Foundational Test Diagram s Activities Records Inspection Records Project Team Drawings I ssues Assem bly (e.g. As- Resolution Built) Other Document s • Calculations Review Budgeting for Project Controls Bills of I ssues Material • Issues Analysis Resolution The information contained herein is proprietary and confidential to Gas Transmission Systems, Inc. 7 (GTS) and shall not be released or disclosed to any party without prior written approval of GTS
Logic Diagrams Establish logic diagrams to efficiently resolve gaps: MAOP Reconfirmation Calculated Completed Create/ Update PFL Yes Continue to MAOP (MAOPc) PFL with Calculations and perform operate pipeline MAOP Validates MAOP r MAOP calculations at MAOPr Calculations A No Direct Inspection (DI) Direct Inspection to will provide Direct Yes Yes Perform Clear Assumptions Request Direct Submit data to better data Inspection Direct Inspection GTS PFL Build to clear Approved? Inspection assumption? No A ? ? ? The information contained herein is proprietary and confidential to Gas Transmission Systems, Inc. 8 (GTS) and shall not be released or disclosed to any party without prior written approval of GTS
Gaps from Issues Analysis Data and knowledge gaps are Records issues Missing, conflicting, poor quality, unknown specifications Application of conservative assumptions Does not satisfy MAOP Must have T, V & C Records The information contained herein is proprietary and confidential to Gas Transmission Systems, Inc. 9 (GTS) and shall not be released or disclosed to any party without prior written approval of GTS
Issues Prioritization and Recommendations Identify, Categorize and Prioritize Gaps Types of issues: Records Issue and MAOP Issue Established Client-determined Prioritization Recommendations provided for identified gaps Remedial actions must be cost effective, time-based, realistic The information contained herein is proprietary and confidential to Gas Transmission Systems, Inc. 10 (GTS) and shall not be released or disclosed to any party without prior written approval of GTS
Cost Estimates Analogous Param etric Cost Benefit Program Analysis Budgeting The information contained herein is proprietary and confidential to Gas Transmission Systems, Inc. 11 (GTS) and shall not be released or disclosed to any party without prior written approval of GTS
Combine Work • Thoughtful project scoping • Department communication and transparency • Continuous planning with stakeholders Symbol Issue Resolution Perform Direct Inspection with Intent to Replace or Repair Reduce Pressure to < Calculated MAOP Perform Direct Examination to Validate Records The information contained herein is proprietary and confidential to Gas Transmission Systems, Inc. 12 (GTS) and shall not be released or disclosed to any party without prior written approval of GTS
Capture Data into System of Record As-builts have to be feature based Method for loading into GIS Protocols to continuously check Timely updates to the System of Record The information contained herein is proprietary and confidential to Gas Transmission Systems, Inc. 13 (GTS) and shall not be released or disclosed to any party without prior written approval of GTS
Path Forward Development of a Remediation plan: 1 Prioritization 2 Filling Data Gaps Goal of zero conservative 3 assumptions, zero unknowns The information contained herein is proprietary and confidential to Gas Transmission Systems, Inc. 14 (GTS) and shall not be released or disclosed to any party without prior written approval of GTS
Lessons Learned Setting Foundation Process, process, process! Continuous Improvement Set Realistic Expectations The information contained herein is proprietary and confidential to Gas Transmission Systems, Inc. 15 (GTS) and shall not be released or disclosed to any party without prior written approval of GTS
Questions? David Alleshouse, PMP Senior Project Manager GTS Email: davidalleshouse@gtsinc.us Laura Wiesyk, PE Senior Engineer, IVP Southern Company Gas Email: lwiesyk@southernco.com The information contained herein is proprietary and confidential to Gas Transmission Systems, Inc. 16 (GTS) and shall not be released or disclosed to any party without prior written approval of GTS
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