B01_11_Sources_Sought_Draft_Spec_Redacted_1.pdf

U.S. Department of the Interior SPECIFICATIONS Bureau of Reclamation Columbia Pacific Northwest Interior Region 9 February 2025

Cavitation Repair Hungry Horse Turbine Runners, Hungry Horse Field Office

Columbia Basin Project, Washington

Solicitation No. 140R1026R0003

This solicitation issued by Contracting Officer

Pacific Northwest Region Bureau of Reclamation

1150 North Curtis Road, Suite 100 Boise ID 83706-1234

HUNGRY HORSE TURBINE RUNNER CAVITATION REPAIR

HUNGRY HORSE DAM

HUNGRY HORSE FIELD OFFICE, MONTANA

FOREWORD

The principal components of the work to be performed under these specifications include technical information, inspection and documentation requirements, and administrative controls to perform turbine runner weld repair (including welding and grinding) for Hungry Horse Dam.

The work is located at:

Hungry Horse Dam, approximately 20 miles northeast of Kalispell, Montana, 9 miles southeast of Columbia Falls, Montana in Flathead County.

Performance of this contract requires Contractor personnel to have a Federal Government-issued Personal Identification Verification (PIV) Card before being allowed unsupervised access to a Federally-controlled facility or information system. See Clause WBR 1452.237- 80.

FOR DATE AND PLACE OF PROPOSAL SUBMISSION, SEE "SOLICITATION,

OFFER, AND AWARD," STANDARD FORM 1442, IMMEDIATELY FOLLOWING

THE "TABLE OF CONTENTS."

FOR INFORMATION REGARDING BUREAU OF RECLAMATION'S HANDBOOK

ENTITLED "RECLAMATION SAFETY AND HEALTH STANDARDS," (2002

EDITION) WHICH IS APPLICABLE TO WORK UNDER THIS CONTRACT, SEE

NOTICE IN PART II, SECTION I ENTITLED "SAFETY AND HEALTH."

This page intentionally left blank.

Cavitation Repair Hungry Horse Dam

Schedule B-2

SCHEDULE A – HUNGRY HORSE, MT CAVITATION

SCHEDULE

CLIN Section Supplies or Services

001 WBR

1452.232-81

Mobilization and preparatory work.

002 Contract Document Management System

003 Turbine runner cavitation repairs

004 Supplementary welding for future units.

005 Supplementary grinding for future units.

TOTAL FOR SCHEDULE A (

C-1

SECTION C - SPECIFICATIONS

1.01 GENERAL INFORMATION

A. This specification provides technical information, inspection and documentation requirements, and administrative controls to perform turbine runner weld and grinding repair for the Hungry Horse Dam, located approximately 20 miles northeast of Kalispell, Montana. For work described by this specification, the Contractor will provide all labor, equipment, material and resources from initial mobilization through cleanup and demobilization, as required, to complete all authorized repairs. All weld metal shall be deposited using Flux-Core Arc Weld (FCAW) wire feed welding machines. Shielded Metal Arc Weld (SMAW, or stick-electrode welding) shall not be used.

B. Contract:

1. This is an Indefinite-Quantity contract providing for an indefinite quantity within stated limits, during a fixed period. The contract will allow the Government to place an order for all the future needs for cavitation repair for these units for the 5 year period following contract award.

2. Based on historical repair averages; Reclamation typically accomplishes a minimum of two turbine runner repair actions annually. However, we do not represent that this estimate will be required or ordered, nor is the Government obligated to order more than one unit under the contract resulting from this solicitation. Task orders for performance under the contract will be made by issuing Optional Form 347, or similar form.

C. A tentative unit outage schedule, along with approximate dates of outages, is provided in Appendix “A.” The dates listed are approximate, and do not constitute authority to mobilize until confirmed at a later date by the Government. The dates show the Government’s overall maintenance outage plan. The respective turbines will be made available for weld and grinding repair by the Contractor for a portion of the outage duration.

D. The specific turbine runners that may be contracted for repair work per this specification are those in units G-1 through G-4 located in the Hungry Horse Powerplant.

1. The phrase “turbine runner” includes the crown, outer ring, hub, air vents and blades, which make up the “runner” proper, as well as the top part of the draft tube discharge ring (immediately below the runner). Each turbine at Hungry Horse Dam contains 15 blades.

2. Hungry Horse units G-1 through G-4 are equipped with 105,000 HP Francis-type turbines, serial number 1231, 1232, 1233 and 1234, respectively, designed and manufactured by Allis-Chalmers, Milwaukee, WI. The runner throat diameter is 126-inches. The base metal of the runner assembly is steel casting conforming to Federal Specifications QQ-S-681b, Class 2 Medium, Annealed (See Appendix D).

C-2

Note – QQ-S-681b was canceled in 1985 with no superseding specification. The Contractor shall provide an alternative base metal to qualify their weld procedures and submit to the Government for approval. (Reclamation Facilities Instructions, Standards and Techniques (FIST) Manuals, Volume 2-5; Turbine Repair, Runner Materials: Older runners in Reclamation service are commonly cast steel conforming to the requirements of Federal Specification QQ-S-681b class 2. This specification specified a chemical requirement of 0.35 C, 0.7 Mn, 0.05 P, 0.06 S,

0.60 Si, 0.50 Cu, and 0.50 Ni. Physical requirements included a tensile strength of 65,000 lb/in2 and a yield strength of 35,000 lb/in2).

E. The Hungry Horse turbines have been in service since 1950. Each has had different work crews and varying amounts of repair work completed. Thus, no two units are in the same condition. The majority of the runner is carbon steel, but a significant amount of stainless steel exists from previous repair areas. Previously applied protective coatings consisted of primer and various kinds of epoxy paints.

F. The turbine types have noticably different properties and characteristics with respect to the nature of damage seen:

1. The damage to Hungry Horse units G-1 through G-4 is mostly seen as cavitation-enhanced corrosion (severe surface pitting, with a porous appearance like some kinds of cheese) in the crown area and on the face of the blades. Although these units are not known for having cracks in the blades, some have been found in the past. Several areas of the units have already been clad with stainless steel in the most troublesome areas. The leading edge of most of the blades exhibit corrosion erosion.

2. See Appendix E for Hungry Horse Unit G-1 runner extension detail.

G. Each of the subject units (including the generator and turbine) is entirely indoors, where the ambient temperature ranges from 60°F to 80°F.

H. The work area (the location of the turbine runner) at Hungry Horse Dam is accessible through either of two man doors in the draft tube from Floor 1 at Elevation 3070.50. The door openings are each 23.5 inches wide by 29.5 inches high. After installation of the work platform the access openings are each 23.5 inches wide by 20 inches high.

I. The main access to the Hungry Horse Powerplant building is at Elevation 3113.5 (Floor

4).

1.02 MEASUREMENT AND PAYMENT

A. Contract Document Management System

1. Payment: Lump sum price offered in the price schedule

a. See article 1.05D for requirements.