4. W9127N25QA087_STS Roller Chain_BN DETERMINATION FY25-FINAL_Redacted.pdf

TSUBAKI ROLLER CHAIN #C2162H

NAME BRAND DETERMINATION

1. CONTRACTING AGENCY:

Portland District, U.S. Army Corps of Engineers, Contracting Division, 333 SW First Avenue, OR 97204-3495.

2. DESCRIPTION OF ACTION:

Approval is being requested for a new firm fixed price contract, to purchase 4 pairs (8 each) of Tsubaki brand, 42’, epoxy coated roller chains per drawing B101-0944C.

3. DESCRIPTION OF SUPPLIES/SERVICES OR NATURE OF CONSTRUCTION:

The Tsubaki roller chains are required for the Submerged Traveling Fish Screens (STS) utilized at Powerhouse 2 to direct the fish migration away from the powerhouse turbines. The estimated cost for this purchase is .

CLIN: Description QTY Unit Price Total Cost 0001 Tsubaki Roller Chain, 8x42 Feet 8

4. AUTHORITY CITED:

FAR 13.106-1 Soliciting Competition.

(b) Soliciting from a single source.

(1) For purchases not exceeding the simplified acquisition threshold.

(i) Contracting officers may solicit from one source if the contracting officer determines that the circumstances of the contract action deem only one source reasonably available (e.g., urgency, exclusive licensing agreements, brand-name or industrial mobilization).

(ii) Where a single source is identified to provide a portion of a purchase because that portion of the purchase specifies a particular brand-name item, the documentation in paragraph (b)(1)(i) of this section only applies to the portion of the purchase requiring the brand-name item. The documentation should state it is covering only the portion of the acquisition which is brand-name.

5. REASON FOR AUTHORITY CITED:

a. Background: Bonneville Lock & Dam requires the STS chains to be US Tsubaki brand in order to match the existing chain utilized. Existing chains have been purchased from a Tsubaki distributor under contracts cited in paragraph 10. The same chain is required to fit the STS together.

b. Justification: Roller chains manufactured by US Tsubaki are necessary in order for new equipment to match existing equipment. US Tsubaki’s manufacturing method of pressing the nitronic-60 stainless steel roller pins, provides a uniform assembly that other manufacturers have not been able to duplicate. Also, each of US Tsubaki’s finished product comes with flexibility, and all rollers are free of binding, which other manufacturers have not been able to achieve. Additionally, Tsubaki has local distributors, available to assist in the installation and maintenance of the roller chains.

c. Impact: The impact of not having the same type of construction chain causes Bonneville

Project to not have any interchangeable parts. If the parts are not the same, it takes longer to repair and maintain the STS and chain equipment, forcing Main Generator Units out of service for longer periods of time. Consistency in the manufacturer results in less down time on the generators with fewer and shorter outages.