Common use of Drums Clause in Contracts

Drums. The pressure parts will be designed in accordance with the requirements of the ASME Code Section 1. HP, IP and LP steam drums will be provided with removable primary and/or secondary steam separators to provide suitable steam purity. An isokinetic sample point will be provided in the steam line from the drums. The upper steam drums will be provided with internal distribution piping for feedwater, blowdown, and chemical feed. The upper steam drums will be provided with the following minimum connections: o Level control device o Safety valves o Feedwater inlet o One water level gauge complete with drain valve and three level transmitters (The water gage and each transmitter are individually isolatable.) -------------------------------------------------------------------------------- Proprietary Information Page 3 AES IRONWOOD CONTRACT FINAL ISSUE - OCTOBER 30, 1998 -------------------------------------------------------------------------------- o Vents o Blowdown connections o Steam outlet o Pressure gauge o Chemical feed o Nitrogen filling connection o Connections as necessary for the CT Rotor Cooling Air System and Fuel Gas Preheating System The steam, water and mud drums will have manholes at each end. The lower drums (if furnished) will have provisions for intermittent blowdown and drains. The design of drum internals will provide uniform distribution of chemicals and uniform removal of blowdown water, and will prevent the under flow of steam which would otherwise interfere with boiler circulation.