Request for Bid (RFB) No. 26086

Nebraska Public Power District (DISTRICT) intends to procure all design, manufacture, labor, technical support, specialty tools (if any), equipment, material, software and supplies for the delivery and installation of a complete digital voltage regulator (DVR), power system stabilizer, and any other technical data to supply the volt-ampere requirements of the main field of the uprated synchronous Main Generator at Cooper Nuclear Station (CNS) near Brownville, Nebraska.

The purpose of this upgrade project is to improve plant capacity factor and reduce future corrective maintenance costs by installing a more reliable, improved fault-tolerant Main Generator Digital Voltage Regulator System.

The CONTRACTOR shall provide all design, manufacture, labor, technical support, specialty tools (if any), equipment, material, software and supplies for the delivery and installation of a complete digital voltage regulator (DVR), power system stabilizer, and any other technical data to supply the volt-ampere requirements of the main field of the uprated synchronous Main Generator at CNS.

It is intended to minimize the impact on the Main Control Room operator controls and the Main Control Room annunciator and to retrofit the existing Voltage Regulator cabinet, and indication.

The Bidder shall provide with their bid a production and delivery schedule that identifies key milestones (drawing approval, vendor manual approval materials procurement, testing, delivery, erection, etc.) and shall also provide a removal/installation schedule which meets the fifteen- (15) day work window for this scope of work.

The CONTRACTOR shall provide forty (40) hours of onsite technical start-up support.

The CONTRACTOR shall provide a monthly production status report, and weekly after manufacturing begins, and include issues or major concerns arising that have the potential to impact the delivery schedule.

The CONTRACTOR shall successfully remove the existing voltage regulator, install and commission the new voltage regulator as part of these services at CNS.

As a minimum, the following items shall be included in the CONTRACTOR'S scope of supply:

• Electronic control hardware as specified herein.
• (N+2) Rectifier sets.
• Permanent Magnetic Generator (PMG) AC output supply breaker with remote operating capability.
• Engineering to ensure the functionality specified herein is provided with complete compatibility with the existing interfaces and rewound generator.
• Static and dynamic factory testing of components and control system software.
• On-site retrofitting of the existing voltage regulator cabinet and SAT Commissioning.
• Preparation and shipping of the voltage regulator and other components F.O.B. CNS.
• Engineering services shall also be provided to assist DISTRICT personnel developing the removal and installation packages.

**Submission method:** All bids shall be submitted via email to the DISTRICT at:

kjhagge@nppd.com

The subject line of the email shall include the name of Bidder as well as this RFB Number, i.e., "[Bidder’s Name]’s Submittal for RFB No. 26086. The DISTRICT has a twenty (20) megabyte limit on emails.

Bids must remain valid for **thirty (30) days** from this date.

Receipt of submittals will be acknowledged via return email.

If any requirement of the specification herein is considered by the CONTRACTOR to be incorrect, unsuitable, contradictory, such that conformance to the specification would diminish or adversely affect the quality in any way of the CONTRACTOR’S proposed products, the CONTRACTOR shall describe their objections and the reasons in their bid and include suggestions to meet the objectives of the Contract.