U_AMIM-PWS_Annex-C_Hydro Plant Operations and Maintenance_03Mar2025.pdf

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Rock Island Arsenal: Base Operations and Maintenance PWS Annex C: Service 501 Hydroelectric Plant Operations and Maintenance

Annex C

Hydroelectric Plant Operations and Maintenance

Rock Island Arsenal, Illinois

March 2025 ii

Table of Contents

1.0 General Information

1.1 Scope

1.2 Personnel Qualifications

2.0 Hydroelectric Plant Services

2.1 Hydroelectric Plant Operations

2.1.1 Trash Rack Monitoring and Maintenance

2.1.2 Generator Operation

2.1.3 Switching Operations

2.1.4 Monitor System Outages

2.2 Hydroelectric Plant Preventative Maintenance

2.2.1 Operator Preventative Maintenance Requirements

2.2.2 Generator Bearing Adjustments

3.0 Work Capability Levels – N/A

4.0 Reporting Requirements

5.0 References

5.1 Technical Exhibits

1.0 General Information.

1.1 Scope.

The Contractor shall provide continuous operation of the Hydroelectric Plant, building 160, 24 hours a day, seven days per week, to provide a continuous source of renewable energy. The plant has eight 500-HP generators and two 250-HP induction generators, which operate at a 12-foot riverhead, generating 20-30% of Rock Island Arsenal's (RIA) total annual electric energy consumption. Plant operation includes but is not limited to: system inspections, maintenance of water flow through the trash racks, operation of generating equipment, electrical switching operations, and operation of the Supervisory Control and Data Acquisition (SCADA) system. The SCADA system provides control of and monitors incoming utility and plant-generated power, as well as controlling switching operations in Substation A and the Hydroelectric Plant. The Contractor shall operate the Hydroelectric Plant in accordance with (IAW) manufacturers' operating instructions, maintenance manuals, and proven industry practices. The Contractor shall prepare and submit an Operating Plan for the Hydroelectric Plant. The operating plan shall, at a minimum, address staffing requirements, personnel qualifications, and specific requirements of the facilities to be operated. The Contractor shall include in the plan all information necessary to complete the Scope and Specific Operational Tasks as described in Annex C. The plan (Deliverable C.1 Hydro Plant Operation Plan) shall be submitted within 30 calendar days of contract award. The Contractor shall schedule and perform the preventative maintenance requirements listed in Annex C and include them in the Preventive Maintenance Plan (PMP) as required in Annex A, Section 1.7.10. The KO/COR shall approve the Operating and Preventative Maintenance Plans. The major components of the Hydroelectric Plant are identified in Technical Exhibit, TE C.1, Hydro Electric Plant Major System Components.

1.2 Personnel Qualifications.

The Contractor shall provide and staff the Hydroelectric Plant with individuals having experience as specified below:

a. Operators shall have a minimum of 2 years of experience with power generating equipment.

b. Machinists shall possess 4 years of experience as a full-service machinist with at least two years repair work experience on large hydroelectric generating plant systems and equipment.

c. Supervisory personnel shall be a Journeyman Lineman or Journeyman Electrician with 4 years of experience in the field and 2 years of management experience.

The Contractor shall use licensed journeyman crafts persons or manufacturer certified crafts persons to conduct maintenance tasks as required.

2.0 Hydroelectric Plant Services.

2.1 Hydroelectric Plant Operations.

The Contractor shall conduct the following operational tasks to ensure continuous operation of the Hydroelectric Plant.

2.1.1 Trash Rack Monitoring and Maintenance.

The Contractor shall keep trash racks clear of debris to achieve full water flow into the turbines. The Contractor shall monitor generator outputs to ensure production is not being reduced due to restricted flow through the racks. During cold weather operations, the contractor shall monitor air and water temperatures and open a channel in the ice ahead of trash racks and move ice, debris and dead fish out to spillway.

The Contractor shall manage frazil ice effects on the Hydroelectric Dam. Frazil ice is a fine needle-like ice that is often distributed throughout a volume of moving water or is formed in water cooled below the normal freezing point (zero degrees Celsius). When frazil ice is forming, the Contractor shall take generators off line and shut down turbines to prevent damage to the units. The Contractor shall open passage through the frazil ice to allow water flow through trash racks. The Contractor shall resume generation as soon as the frazil condition passes.

WARNING: Failure to comply with this requirement may result in serious damage to the facility for which the Contractor shall be financially responsible.

2.1.2 Generator Operation

The Contractor shall control and operate the generators to produce maximum power output. The Contractor shall monitor winding temperatures during operation to avoid damage.

2.1.3 Switching Operations.

The Contractor shall perform switching operations on the electrical distribution system as required to provide reliable, uninterrupted power to the installation. Switching operations includes controlling both the incoming and outgoing feeders at Substation A.

The Contractor shall coordinate, through the Contracting Officer/Contracting Officer Representative (KO/COR), switching with MidAmerican Energy Company whenever it is necessary to open or close incoming feeders or the bus tie circuit breaker at the incoming switchgear in Substation A.

The Contractor shall operate generators and other power factor control equipment to manage the RIA power factor. The Contractor shall manage the power factor to minimize RIA electric energy costs. The MidAmerican Energy Company service contract has provisions for a reactive demand charge when kilo volt-ampere reactive (KVAR) demand exceeds 50% of the kilovolt (KV) demand purchased.

The Contractor shall maintain a diagram to show current status (opened, closed, locked, or tagged out of service) of all medium voltage switches, breakers, and fused cutouts.

The Contractor shall make changes to the diagram to reflect any additions, deletions, changes or modifications to the installation's electric distribution system within one (1) hour of a status change. The diagram shall be available to the COR at all times. The current diagram is a map board stationed at the Hydroelectric Plant.

The Contractor shall operate the SCADA system, to include controlling switching operations and monitoring system voltage, power factor, and current produced by the generators. The Contractor shall maintain a book of dated SCADA data and a daily log sheet of plant operations (Deliverable C.2 SCADA/Plant Operation Logs). The Contractor shall maintain logs IAW TE C.2. The Contractor shall provide a report showing a summary of power generated and purchased monthly by the fifth (5th) working day of the month (Deliverable C.3 Power Summary Report). This report shall show the daily meter readings showing power generated, the daily power purchase and consumed. The report shall also show any significant events or repairs performed at the Hydroelectric Plant.

2.1.4 Monitor System Outages.

The Contractor shall monitor electrical system outages to include, but not limited to, glitches, bumps and ground/line faults lasting 1 second or greater duration. The Contractor shall report this data to the COR weekly by email and upload to the Government’s Shared Drive (Deliverable C.4 Weekly Outage Data Report). The Contractor shall submit a report quarterly (January, April, July and October) providing information on outages including cause, buildings effected, length of outage, electrical circuits effected, corrective actions taken and preventative measures recommended to prevent reoccurrence (Deliverable C.5 Quarterly Outage Data Report).

2.2 Hydroelectric Plant Preventative Maintenance.

The Contractor shall schedule and perform the preventative maintenance requirements listed herein and include them in the Preventive Maintenance Plan (PMP) as required in Annex A, Section 1.7.10. All plant maintenance or repairs impacting electrical generation shall be conducted during historically low electrical demand time frames. All oil replacement shall be conducted during historically low electrical demand time frames. The Contractor shall provide a schedule of planned Hydroelectric Plant maintenance to the COR weekly (Deliverable C.6 Scheduled Maintenance). The schedule shall include all required activities for the week with planned dates for the requirements. The Contractor shall submit the schedule to the COR on the last business day of the preceding week.

2.2.1 Operator Preventative Maintenance Requirements.

The Contractor shall complete all maintenance tasks as specified in TE C.3 Specific Operator Maintenance Requirements.

2.2.2 Generator Bearing Adjustments.

The Contractor shall annually inspect and adjust the following items: five (5) each underwater turbine bearings, turbines, wicket gates, wicket gate operation and all systems associated with the bearing and the shaft below the generator. The Contractor shall perform inspections and adjustments to associated hydraulic and electronic control systems as a part of this requirement. The contractor shall report critical deficiencies to the KO/COR immediately. The annual inspections performed will include all ten (10) generators in a two (2) year time period. See inspection timing listed below.

Generator Number Contract Year

1,4,7,8,9 Base Year

2,3,5,6,10 1st Option

1,4,7,8,9 2nd Option

2,3,5,6,10 3rd Option

1,4,7,8,9 4th Option

The Contractor shall provide a detailed description of the condition of each generation unit as the bearing adjustments are completed. The report shall include all deficiencies found and any information on systems showing exceptional wear. The Contractor shall submit the report ten (10) business days after a generation unit bearing adjustment is completed (Deliverable C.7 Generator Bearing Adjustment Report). Costs associated with generator bearing adjustments shall be priced separately and included on its own CLIN for execution. Execution will be based on expected river levels for the season and other factor affecting the capability to execute the task.

3.0 Work Capability Levels – N/A

4.0 Reporting Requirements.

4.1 Hydro Electric Plant Operating Plan

4.2 SCADA/Plant Operation Logs

4.3 Power Summary Report

4.4 Weekly Outage Data Emails

4.5 Quarterly Outage Data Report

4.6 Planned Weekly Maintenance Schedule

4.7 Generator Bearing Adjustment Report

5.0 References

5.1 Technical Exhibits

a. TE C.1 Electrical Distribution System Major Components of Hydroelectric Plant

b. TE C.2 SCADA (Supervisory Control and Data Acquisition ) Reporting Elements

c. TE C.3 Specific Operator Maintenance Requirements