A.02_Attachment2_ Purchase_Description_John_Day_Draft_rev3.pdf

The United States Army Corps of Engineers Portland District (CENWP) requires a set of components needed to conduct repair-by-replacement of selected bushings and fasteners on the Upstream Navlock Gate Guide Wheels at the John Day Project, and for maintenance of stock to allow repairs to be conducted without delays or significant Navlock shutdowns at future dates.

The primary machined component are a set of bushings manufactured from aluminum bronze with Polytetrafluoroethylene (PTFE) wear plugs. The vendor must submit a bid for the full list of parts exactly as specified below, to include shipping to the John Day Project at Rufus, Oregon with arrival NLT 1200 hrs on Thursday, 23 February, 2023.

List of Parts to be Procured in this Solicitation to include Full Specifications:

Machined Parts:

8EA Thrust Flanged Bushing to meet requirements:

o PTFE plugged aluminum bronze CDA 95400, ASTM-B505 o 11” outer diameter.

o 1” flange thickness.

o 6” inner diameter.

o 1.75” overall thickness o Inner diameter 0.156” x 45 deg chamber both ends o 0.125” x 25 deg flange chamfer o Prepared to be field machined to 7.625” OD to fit measurement of existing opening.

o Meets all specifications for Thrust Flanged Bushing on sheets M-101 and M-102, Appendix one.

8EA Flanged Bushing to meet requirements:

o Aluminum bronze CDA 95400, ASTM-B505 o 6.5” outer diameter.

o 1.344” total thickness.

o 0.969” flange thickness.

o 2.010” inner diameter.

o 2.875” outer flange diameter.

o 0.156” x 45 degree inner chamfer.

o 0.063” x 45 degree inner flange chamfer.

o Meets all specifications for Flanged Bushing on sheets M-101 and M-102, 8EA Sleeve Bushing to meet requirements:

o PTFE plugged aluminum bronze CDA 95400, ASTM-B505 o 6.5” long o 4.995” outer diameter o 4.251” inner diameter o 0.156” x 45 degree chamfer for inner diameter, both ends.

o 0.063” x 45 degree chamfer for outer diameter, one end.

o Meets all specifications for Sleeve Bushing in sheets M-101 and M-102, 4EA Upstream Guide Wheel Axles to meet requirements:

o Stainless Steel Axle – ASTM A564, UNS S17400, Type 630, COND A, H1100 o 28.563” overall length o 5.997” main diameter (length 16.188”).

o 4.250” diameter under bushing (length 6.625”).

o 2.00” minimum diameter, length 1” o 2.00” minimum diameter, threaded with 2”-4.5 UNC-21 thread at a length of 1” with 0.75” long, 1.25” diameter wrench flats.

o 4 equally spaced holes with 1/2"-13 UNC-2B threads x 1.75" deep on 3" diameter bolt circle.

o Meets all specifications for Upstream Guide Wheel Axle in sheets M-101 and M-

102, Appendix one.

4EA Axle End Plate to meet requirements:

o Stainless Steel End Plate – ASTM A240 o Material: UNS S30400 o 11” outer diameter o 0.375” thick o 4 Equally Spaced 0.563” diameter holes on 3” diameter bolt circle.

o Meets all specifications for Axle End Plate in sheets M-101 and M-102, Appendix one.

General Requirements for all Machined Parts:

o 125 Microinch surface finish on all machined surfaces, unless otherwise shown.

Surface texture shall be per ASME B46.1 o Decimal tolerances are +/- 0.005” unless otherwise indicated on design sheets in Appendix 1.

o Break all corners and edges.

o Coordinate surface finish of all surfaces of plugged bushings, including between plugged bushings and bores, with bushing manufacturer.

Commercial off the Shelf (COTS) Parts to be Supplied:

32EA Hex Head Cap Screws to meet requirements:

o ½” – 13 x 2” UNC Hex Head Cap Screws o 18-8 Stainless Steel – ASTM F593C

8EA Axle Washer to meet requirements:

o Stainless Steel Washer – ASTM A582, UNS S41600 – Sized per ASME B.18.22.1

8EA 2” – 2A HEX NUT to meet requirements o Stainless Steel Nut – ASTM A582, UNS S41600 – Sized per ASME B18.2.2

8EA 2” – 2A JAM NUT to meet requirements:

o Stainless Steel Jam Nut – ASTM A582, UNS S41600 – Sized per ASME B18.2.2

16EA ½” – 13 X 2” Threaded Weld Stud to meet requirements:

o C1008-C1018 Steel per ASTM A29.

16EA Magnesium Anode Plate.

o Bolt-on, replaceable o 3x6x3” with 2 bolt holes (approximately 54oz of magnesium).

16EA Washer o C1008-C1018 Steel Sized per ASME B.18.22.1

16EA Lock Washer

16EA Nut o ½” – 13 nuts.

Pre-award submittals:

The following submittals must, at minimum, be included in the vendor’s response to the solicitation for review:

1. Cost estimate must be divided by item.

2. Machined versus COTS parts must be indicated.

3. Estimate of machining time required to complete each machined item (may be lumped together for entire quantity of that type of item).

4. Drawing showing plugged graphite pattern, dimensions, and specifications for bushings with plugged graphite component (thrust flanged bushings, and sleeve bushings). These drawings need only have sufficient detail to confirm proposed configuration and arrangement of graphite plugs is compatible with overall assembly design.

Structuring the Price Proposal:

1. We ask the vendor to provide a proposal with the price broken down to separately provide shipping, and for each item to have both a total cost for that item, and a per unit cost. Total price for the entire proposal shall be summed and shall equal the sum of the total cost for all items and shipping.

2. Ship to Location: John Day Lock and Dam, Exit 109, Interstate 84, Rufus. OR 97950

Post-award submittals:

1. Spec sheets for all COTS parts

2. Detailed drawing for Sleeve Bushings showing plugged graphite arrangement, dimensions and specifications.

3. Detailed drawing for Thrust Flanged Bushings showing plugged graphite arrangement, dimensions, and specifications.

4. Machining schedule showing how delivery date will be met.

Appendix 1: Design drawings are contained in Appendix 1. They constitute part of this Purchase Description and must be followed in full as referenced herein.