Constellation Power Duplicates Turbine Bypass System for New Plant

Constellation Power Development has recently ordered a CCI turbine bypass system for their new 800 MW combined-cycle plant in Seguin, Texa . This duplicate order was based on service experienced at their existing Gateway Tenaska plant.

Involved are three 8-inch × 12-inch (200-millimeter × 300-millimeter), 1200-psia (83 barA) HP steam dump to reheat valves and their associated spraywater valves, three 12-inch × 16-inch (300-millimeter × 400-millimeter), 300 psia (21 barA) hot reheat dump to condenser valves and their associated desuperheating spray valves, and three LP 100 psia (7 barA) steam bypass valves to the condenser.

Again, past reliable service and low noise through strict velocity head control in the HP and LP steam DRAG® valves and velocity flow control in the spraywater and desuperheating spray valves were significant factors in this repeat order.

Published in SOLUTIONS Spring 2001