A14_SOW_Emergency_Governor_Evaluation_1.pdf

Statement of Work

Emergency Governor Evaluation

1.0 NEED

The Bureau of Indian Affairs (BIA), Colorado River-Electrical Services (CR-ES) must ensure the safe, reliable, and consistent operation of the Headgate Rock, Hydro Electric Generation Station (HGR-EGS). The power generation station consists of three major systems controls, generators, and turbines. The turbines have faced several catastrophic failures within its subsystem, the hydraulic distribution system of the governor. To repair the damage done to the hydraulic governor system CR-ES elected to upgrade the hydraulic distribution valves, piping, check valves, and motors. The upgrades have caused the system to run sub-par and triggered premature failure of newly installed equipment. The system is currently outside the warranty period of the original installation award. CR-ES needs a Subject Matter Expert (SME) with hydraulic system engineering, troubleshooting, and hydraulic governor design expertise, to inspect and troubleshoot the governor system. The SME will need to produce a report identifying the current systems’ configuration, errors, and recommended repairs with materials lists.

2.0 RISK

The HGR-EGS is interconnected, through the Headgate Rock Substation, to the Western Area Power Administration

(WAPA) high voltage power grid. To ensure safe, reliable electrical power is provided to the customers and Native

American Tribe served by CR-ES, the power needed to meet full system loading is purchased from WAPA. The electrical power generated from the HGR-EGS is used to offset the cost of purchasing power from WAPA. The offset is accomplished through power purchased, minus the power generated. The net cost is passed along to CR-ES customers. The direct relationship of purchase power cost to customers’ electric bills causes financial impact to the economically stressed community. The HGR-EGS has suffered the loss of one of its three power generators due to governor system failures, and experienced substandard performance on the other two power generators. The financial burden caused by the loss of power generation due to system failures will force the program to increase costs to electrical rates and purchase power fees. Because of the severity of catastrophic failures, and non-commercial-off-the-shelf products, there is no estimated time frame as to when the hydraulic system can be repaired.

Resulting in an undefined financial impact to the program and its customers/Tribe.

3.0 OBJECTIVE

A key goal for BIA, CR-ES is to provide economical and reliable power to the residential, commercial and irrigation customers that reside within the boundaries of the Colorado River Indian Tribe (CRIT) reservation.

The objective of this effort is for the Contractor to supply SME’s capable of evaluating the governor hydraulic systems and deliver recommended repairs and parts list.

3.0 BACKGROUND

Owned and operated by BIA, the HGR-EGS is located on the lower Colorado River, about 15 miles downstream of

Parker Dam near the town of Parker, Arizona. The Headgate Rock Dam (HGRD), which impounds a body of water known as Lake Moovalya, has 10 radial gates. Radial gates #1-7 act as spillway gates and pass Colorado River flow without generating any power. Radial gates #8-10 sit immediately upstream from HGR-EGS’s three hydroelectric generation units.

The HGR-EGS was retrofitted to the Head Gate Rock Dam (HGRD) circa 1992. HGR-EGS consists of three (3) low head, axial flow turbines, which power three (3) 6.5 Mega Watt (MW) electric generators, for a total output of 19.5

MW. The electrical power generated interconnects to the 69 Kilovolt (kV) power distribution system servicing the

Colorado River Indian Tribes (CRIT) Reservation. Somewhat rare, the hydroelectric generation units are installed horizontally because of the low head design. The turbines are manufactured by Voight, and the generation units are manufactured by Villares. The turbines utilize a 1,000-psi hydraulic system to control the gates, and wicket gates for the turbines.

After the hydraulic governor system experienced a series of catastrophic failures, CR-ES contracted to upgrade the original hydraulic governor system to a more efficient modern design. The upgrade began in 2022 and ended in

2023. Since the upgrade the system has been plagued with leaks, breaks, and component failures. CR-ES has had system repairs completed by both the original contractor and government staff, but none of the repairs have yielded a reliable system, capable of 24/7 unmanned operation.

4.0 SCOPE

The scope of this effort is for the Contractor to perform an inspection, troubleshooting of the governor systems at the

HGR-EGS. The Contractor will produce a report identifying the current systems’ configuration, errors, and recommended repairs with materials lists.

5.0 REQUIREMENTS AND TASKS

To meet the BIA’s goals and expectations the Government requires an expert contactor with in-depth knowledge and expertise in all areas of requirements, elicitation, documentation, installation, maintenance, troubleshooting, and management to ensure that requirements are met, and deliverable services comply with business needs.

The following section of the SOW describes the requirements and tasks that shall be completed by the Contractor.

5.1 REQUIREMENTS

The Contractor shall be directly responsible for ensuring the accuracy, timeliness and completion of tasks assigned under this contract.

5.1 SPECIFIC TASKS

The contractor shall provide management and technical services within the scope of this contract to support the following tasks.

5.1.1 TASK 1: HYDRAULIC GOVERNOR SYSTEM INSPECTION AND ANALYSIS

5.1.1.1 Contractor shall conduct a kick-off meeting no later than ten (10) business days after notice-to-proceed.

5.1.1.2 Contractor shall perform a three-day evaluation for each of the HGR-EGS hydraulic governor systems.

5.1.1.2.1 At a minimum, the contractor shall utilize the USBR, Facilities

Instructions, Standards, and Techniques (FIST), Mechanical

Maintenance of Mechanical and Digital Governors for Hydroelectric

Units as the standard technical guide for the evaluation, testing, and inspection of the HGR-EGS hydraulic governors.

5.1.1.2.2 Due to differences in equipment design, if there is a discrepancy between the FIST and the manufacturer’s recommendations, the inspection/evaluation must use the more stringent practice unless there is a reason that a less restrictive practice is warranted.

5.1.1.2.3 Current and Past issues,

• Primary Oil Pump failure, running backwards

• Secondary Make-Up Pump running continuously

• Oil temperatures running

• Oil Lines separating at connection points, causing oil spills and loss of generation

• Oil backflowing into accumulator

• Sudden pressurization, causing catastrophic failure of distribution valves

5.1.1.3 Two weeks after completion of the inspection the contractor shall submit a report summarizing the findings, must include photographs of identified parts or equipment.

5.1.1.3.1 At minimum, for each of the identified problems associated with the hydraulic governor system(s), the report shall contain,

• Background of the Problem

• Part/Equipment Description

• Maintenance/Repair history of part/equipment

• Summary of Findings

• Specific recommendations for maintenance, repair, replacement, or preventive maintenance.

6.0 DELIVERABLES / DELIVERY SCHEDULE

6.1 Activity and Deliverable Timetable: Deliverable products shall be submitted to the address shown in Section 6.3, in accordance with the following schedule:

Item # Description Section # Distribution Acceptance

Required Due Date

001 Kick-Off Meeting 5.1.1.1 COR – One (1) electronic copy No 10 Days after Notice to Proceed

002 Findings Report 5.1.1.3 COR – One (1) electronic copy Yes

10 Days prior to the End of the

POP

Table 1 - Activity and Deliverable Timetable

6.2 Acceptance/Disapproval of Deliverables:

Unless otherwise specified, the Government will have a maximum of ten (10) working days from the day the deliverables are received to review the document, provide comments back to the Contractor, approve or disapprove the deliverable(s). The Contractor will also have a maximum of ten (10) working days from the day comments are received to incorporate all changes and submit the final deliverable to the Government.

6.3 Address for Deliverables:

Colorado River Agency Electrical Services 12000 1st Ave Parker, Az. 85344

6.3.1 Electronic Submittals of deliverables may be submitted to the email address of the identified COR.

7.0 PLACES OF PERFORMANCE

The place of performance shall be within the boundaries of the CRIT Reservation, Parker, Arizona, La Paz County.

• Main Meeting Location:

Colorado River Agency Electrical Service 12000 1st Ave.

Parker, AZ. 85344 La Paz County (Arizona)

• Physical Locations:

Colorado River Agency - HGRD 11850 Headgate Dam Rd.

Parker, AZ. 85344

8.0 PERIOD OF PERFORMANCE

8.1 Period of Performance:

The period of performance for this contract is forty-five (45) days from the date the notice-to-proceed is delivered from the CO.