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HomeMy WebLinkAboutDistrict Wood Heating in Fort Yukon R3 Inspection Rpt-Apr2018 REF Grant 7030021Goy ®``Stassel Engineering, Inc. P.O. Box 111405 Anchorage, Alaska 99511-1405 Ph. (907) 349-0100, Fax (907) 349-8001 FORT YUKON CHP & BIOMASS PROJECT BIOMASS BOILER STARTUP INSPECTION DATE: April 9, 2018 FROM: Steve Stassel, GSE Gram -Io3oaa► SUBJECT: Ft. Yukon CHP Plant & Biomass Project Biomass Boiler Startup Inspection Report On April 6, 2018, Steve Stassel of Gray Stassel Engineering (GSE) travelled to Fort Yukon to perform a Startup inspection of the Biomass Boiler and review work recently completed in the CHP plant. I arrived in Fort Yukon approximately 8:45 am and was met by Nicholas Busse, Electrician, and we proceeded to the CHP plant where I met Thomas, Fink Machine boiler technician. Thomas was in the process of performing startup of the boiler. While onsite I met with GZU Manager Frannie Hughes, power plant operator Tony Carroll, and alternate plant operators Jordan Jones and Peter Tony. We reviewed plant operations and I confirmed with Tony Carroll that the engine preheat modifications performed by Austin Gillette in February were adequately maintaining offline engine preheat temperatures. We agreed to increase the idle time on GEN1 from 15-minutes to 20-minutes to provide sufficient time for GEN1 to reach 130F to 150F prior to going on line, without restarting the engine. Tony Carroll reported that GEN2 voltage regulation issues appear to be resolved (Austin Gillette investigated and repaired a loose wire in the voltage regulator wiring harness plug). GEN 3&4 were reported to be operating well. The boiler went online about 11am and operated until about 2:15pm. The outdoor air temperature ranged from single digits to low 30's during the day. The heat recovery system was bypassed (all engine heat rejected to the radiators) and the boiler operated as the primary heat source for the district heat system for several hours. The boiler was shut down about 2:15pm and Thomas departed Fort Yukon about 3:15pm. Since the heating season is nearly over, a Fink Machine boiler technician will return to Fort Yukon October/November 2018 to restart the boiler, complete minor repairs to the boiler control panel, restart the boiler, and provide additional commissioning and onsite operator training. I assisted the plant operators with troubleshooting the startup sequence of GENs 3&4 to prevent errant shutdown when transferring load back to GENs 3&4 after oil changes or maintenance shutdowns. I worked with Nicholas Busse to develop a punchlist of items for completion prior to his departure next week, and identified additional items to be completed this summer (refer to 4-6-18 Punchlist, attached). Nicholas planned to remain in Fort Yukon until Monday to work on punchlist items. I departed Fort Yukon at 6:30 pm, and arrived Anchorage at 10:35 pm Pagel of 2 Gray `StEngineering, Inc. P.O. Box 111405 Anchorage, Alaska 99511-1405 Ph. (907) 349-0100, Fax (907) 349-8001 As of April 6th, the CHP and Biomass project is substantially complete. CHP & Biomass Plant Completed Punchlist Items 1. Biomass boiler mechanical, electrical and hydraulics installation completed 2. Chip Trailer liftgate hydraulic power pack installation completed 3. Chip Trailer walking floor control panel modifications completed 4. Exterior light installed to provide additional lighting for intermediate tank fueling operations 5. Boiler and heat recovery temperature sensors calibrated for proper temperature indication. SCADA programming for switchgear and district heat control panel completed 6. A new station service panel (SSC) has been installed to provide room for additional circuits. New circuit and receptacles to be provided in the Line Truck bay. 7. Circuits labeled in station service panels SSA and SSB 8. Exhaust fan VFDs replaced with on/off starter controls (EF's 1-5) 9. As -built wiring diagram for Daytank control panel in Gen bay 2 10. Low water pressure low at CHP plant — corrected 11. Switchgear Arc Flash labels installed 12. Plant fencing and traffic bollards installed 13. Garage door and mandoor thresholds installed 14. CHP building perimeter foundation flashing sealed to wall panels to prevent air infiltration 15. Exterior CHP base trim installed 16. Snow cleats/gutters on CHP roof over transformers and doors (over garage doors and from transformer to end of building) installed Refer to attached Punchlist dated 4-6-18 for summer 2018 Remaining Tasks to be completed If you have any questions please call me at 907-349-0100. Sincerely, GJ�sel E Bering, nc. Steven St s el, P.E. Project Engineer Page 2 of 2