LOCATION
Azusa, California

CLIENT
County of Los Angeles Public Works

PARTICIPANTS
Abhe & Svoboda, Inc.

SCOPE OF WORK
Abrasive Blasting
Painting
Lead Abatement & Containments
Scaffolding & Rigging
Steel Repair & Replacement

VALUE
$3.38 million

SCHEDULE
2006

The project involved the renovation of three radial drum gates and four manually operated slide gates.

Each of the 70 foot long drum gates had a radius of 21 feet, and required UT testing and steel repairs, as well as abrasive blasting and painting.

Abrasive blasting and painting of the complete exteriors and partial interiors of the three gates was conducted. SSPC Class 1A containments were erected. SSPC-SP 10 Near White Metal Blast with recyclable steel grit was the abrasive blast cleaning method used. The paint system spray-applied to the exterior steel surfaces of the gates was Tnemec Coatings Pota-Pox Plus epoxy. The interiors were coated with Tnemec-Tar coal tar epoxy.

To repair the four operated slide gates, they were first removed. New bronze seals were machined and installed to replace the worn-out seals on the gates and imbeds. The cast-iron slide gates were also blasted and painted with an epoxy coating. The gates were then replaced and retrofitted with new electric motor operated actuators.

The project also required the fabrication and installation of new stainless steel butterfly seals, clamp bars, brackets, and hardware. The mechanical work consisted of replacement of the inlet/outlet valves and piping with new 16" motor operated plug valves, and 18" motor operated knife gate valves.

The project was completed on schedule.