SOW_-_CEN_Pin_and_J-seal__2018-01-25.docx

Update: 2018-01-25

DALE HOLLOW POWERPLANT - FREIGHT ELEVATOR MODERNIZATION

Contents

Scope of Work

1 SCOPE

1.1 Trunnion Pin Replacement

Center Hill Spillway (Tainter) Gate No. 7: Remove the existing trunnion pin in accordance with contract plans and specifications. Bore the existing trunnion bronze bushing and fabricate a new trunnion pin to fit with the boring bushing in accordance with the contract plans and specification. Install new pin in accordance with contract plans and specifications. Provide spillway gate bracing for pin removal and pin installation. Center Hill Dam is located on Cumberland River in Dekalb County, TN.

1.2 J-seals Replacement

Center Hill Spillway gates 1 to 8: Replace J-seals and J-seal hardware for gates 1 to 8 in accordance with contract plans and specifications. Remove and dispose lead paint from the J-seal mounting bars and angles in accordance with contract plans and specifications. Paint existing J-seal mounting bars and angles in accordance with contract plans and specifications. Center Hill Dam is located on Cumberland River in Dekalb County, TN.

1.3 Trunnion Pin Access Ladders

The Contractor shall provide the necessary plant, labor, materials, equipment, and transportation for a complete design and satisfactory installation of the required metal ladder and ladder assembly including cages, platforms and personal fall arrest system as specified herein and as shown in the drawings on nine spillway gate piers. The ladder shall be installed on the downstream side of the pier. Also cutting existing concrete parapet wall to get access to the ladder.

2 BASE CONTRACT

Base contract shall cover the trunnion pin replacement for gate No. 7.

3 OPTIONS

3.1 J-seals Replacements.

J-seals replacement shall be covered under options 1 to 8.

3.2 Access Ladders

Access ladders shall be covered under options 9 to 17.

--- End of Section ---