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DILO’s 2017 SF6 Gas Management Seminar Best Practices Dealing with Decomposition in Gas Insulated Equipment November 16, 2017 Neil Hutchins Equipment.

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Presentation on theme: "DILO’s 2017 SF6 Gas Management Seminar Best Practices Dealing with Decomposition in Gas Insulated Equipment November 16, 2017 Neil Hutchins Equipment."— Presentation transcript:

1 DILO’s 2017 SF6 Gas Management Seminar Best Practices Dealing with Decomposition in Gas Insulated Equipment November 16, 2017 Neil Hutchins Equipment Services Supervisor Southern Company Services Support to Alabama Power Company

2 Best Practices Dealing with Decomposition in Gas Insulated Equipment
Neil Hutchins, Equipment Services Supervisor Southern Company Services Substation Maintenance Support Over 19 Years of experience in Transmission/Substation Maintenance Supervisor of the Southern Company Services Equipment Group Provide Support to Alabama Power Company on SF6 equipment, Purchase SF6 Breakers, Circuit Switchers and GIS, 15 kV to 500 kV Manage Alabama Power Company spare SF6 Equipment fleet Provide support to Alabama Power Company’s Substation Maintenance groups, Substation support group, Substation Construction, Safety and Training organizations Chair of the Southern Company Major Equipment Committee Member of Southern Company Breaker and Substation Maintenance Committees IEEE Senior Member Member of IEEE/PES Switchgear Committee Member of IEEE Alternative Gases to SF6 Task Force Member EPRI Substation Task Force Chapter Title

3 Alabama Power Company / Southern Company SF6 Best Practices
Plan What (Event/operation) Who (Personnel required) When Communication (Information, Location, impacts, etc) Impact to employees, system, public, customers, etc. Training Procedure and Guidelines Equipment SF 6 Gas (Awareness and Handling) Hazards Respirator Compliance Practice Chaptier Title

4 Alabama Power Company / Southern Company SF6 Best Practices
Personal Protective Equipment Tyvek Disposable coveralls with protective shoe covers Complete Rain Suit (Switching) Nitrile gloves Duct Tape Full-face respirator with AG/OV/P100 cartridge SCBA with auxiliary, if personnel entering area/space Personnel and Equipment Decon Defined Area for Personnel Decon Distilled Water Baking Soda Pump up sprayer(s) with Baking soda and distilled water mix HEPA Vacuum with non metallic attachments SF6 Cylinder(s) empty (Under Vacuum) SF6 Recovery and Testing Equipment Denatured alcohol Atmosphere/air monitor Chapter Title

5 Alabama Power Company / Southern Company SF6 Best Practices Crew members in PPE
Chapter Title

6 Alabama Power Company / Southern Company SF6 Best Practices
Clean-up Supplies Distilled Water Baking Soda Pump up sprayer with Baking soda, distilled water mix and food coloring Trash Bags ( 3 mil thickness) Rags Paper Towels Denatured Alcohol HEPA Vacuum with non metallic attachments Wind Sock (Monitor direction of the wind) Weather Forecast and impacts Barricade tape Clear assignment of duties Disposal Plan First Aid Kit AED Medical Plan (Paramedics, Hospital and location, etc) Identify Onsite and Offsite support Chapter Title

7 Alabama Power Company / Southern Company SF6 Best Practices
Alarms Low SF6 Gas Alarm Low SF6 Gas Alarm followed by Low SF6 Trip Low SF6 Gas Alarm followed by Low SF6 Block trip Relay event records analysis What caused the breaker to operate. Fault current, breaker failure, low gas, etc.) SF6 Gas Quality analysis SO2 in PPM(V) Purity of SF6 Gas (%) PPM(V) of Moisture Breaker Information Manufacture Type Anatomy of Equipment Mechanism Energy Type Chapter Title

8 Alabama Power Company / Southern Company SF6 Best Practices View of Phase 2 Tank with Stationary Interrupter Assembly removed Chapter Title

9 Alabama Power Company / Southern Company SF6 Best Practices Bushing connection moving side on interrupter for Phase 2

10 Alabama Power Company / Southern Company SF6 Best Practices Stationary Arcing and Main Contact Assembly for Phase 2

11 Moving Arcing Contacts for Phase 2

12 Alabama Power Company / Southern Company SF6 Best Practices

13 Alabama Power Company / Southern Company SF6 Best Practices
The After Event Plan Documenting id an SF6 release occurred Compliance – Documentation Removal of the Equipment Move Equipment to other site for scrapping process Scrap equipment on site Disassembling Bushings Cabinets Mechanism Hydraulic/spring mechanisms need specialize equipment to be safety and properly disassembled Remove all energy sources (Pnenmatic, Spring/spring,Nitrogen) Chapter Title

14 QUESTIONS ???? Thank You

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