Four Sets of Upper and Lower Stop Logs

  • Customer: Chelan County Public District No. 1

  • Location: Rock Island Dam - Rock Island, WA

  • Project Duration: June 2017 - Feb. 2018

  • Weight: 88 Tons

  • Material: Carbon and Stainless Steel

Four sets of Upper and Lower stop logs for the Chelan County Public Utility District No.1

Onaway, MI – MIW has completed and delivered (4) sets of Upper and Lower stop logs to the Rock Island Dam in Rock Island, WA.  The project was devised from a need to update the current stop log system in place at the Rock Island Dam.  The project primarily consisted of A572-GR 50, a high strength, low alloy steel and A276 304 Stainless Steel, a product that offers good corrosion resistance.

The project was a challenge fit for MIW’s personnel.  It required specialties in machining, weld placement, seal and pipe installation and painting.  The project required that all final assemblies be coated with 24 mils of Epoxy Paint to help ensure the investment of the owner was well protected over the years.  Prior to paint, the assemblies were test fit to ensure a smooth interface at the site.

These stop logs will spend most of their life waiting to be put into service, but could spend up to a few months in the water, at a depth of nearly 50 feet, while in service.  Stop logs are primarily used to prevent the flow of water into a collection area while maintenance is being performed.