Attachment 3 - Amended Specifications for Fish Screen Chain John Day Dam.pdf

SPECIFICATIONS FOR FISH SCREEN CHAIN:

STANDARD ACME 02160H RIVET ROLLER CHAIN IN ACORDANCE WITH ANSI B29.4 WITH THE

FOLLOWING SUPPLEMENTS REQUIREMENTS:

TSUBAKI-C2162HD128

1. CHAIN LINKS SHALL BE EPOXY-COATED BEFORE ASSEMBLY WITH LOW GLOSS BLACK EXPOXY POWDER COATING AND ELECTROSTATICALLY APPLIED AND CURED AS RECOMMENDED BY THE MANUFACTURER.

2. ALL PINS SHALL BE NITRONIC 60 STAINLESS STEEL (ASTM A276 TYPE UNS S2 1800 HRB 95 KSI

MINIMUM ULTIMATE STRENGTH)

3. ALL BUSHINGS SHALL BE 17-4PH (ASTM A564 TYPE 630 RC 40-47)

4. ALL ROLLS TO BE DELRIN 500

5. ALL COTTERS TO BE 302 STAINLESS STEEL

6. CHAINS ARE TO BE PRESTRESSED MATCHED AND WIRED IN PAIRS (CHAIN LENGTH 42 FEEET 8 INCHS)

7. MAXIMUM VARIATION BETWEEN TWO MATCHED AND WIRED PAIRS TO BE .030 INCHES.

8. MAXIMUM PER FOOT TOLERANCE IS +.025 INCHES

9. MAXIMUM BACKLASH PER FOOT IS .025 INCHES

10. DO NOT LUBRICATE (SHIP DRY)

11. THESE SPECIFICATIONS PER U.S. TSUBAKING DRAWING # B-101-0797 REV "A"

12. CERTIFICATE OF CONFORMANCE REQUIRED.

NOTE: Quote should be for 4 sets total, each set has two boxes on a pallet that contain 2 chains for the left side of the screen, and 2 for the right. It will be four sets, or sixteen total, not pairs.