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ENSIGN
- Power station main steam condenser case studies
Avoid an expensive
condenser re-tube or repair
POWER
STATION A - Long Service
A large UK power
station wished to protect their vulnerable copper nickel condenser tube
from inlet end erosion. Ensign Self Expanding Venturi Inserts
were fitted to all tubes in three condenser sets in 1985. The original
inserts are still in service after over 20 years. No adhesives were
needed to hold the inserts in place.
POWER
STATION B - Bullet Through Ensign Venturi Inserts
A nuclear power station needed to both protect their aluminum
brass tubes from inlet erosion and allow bullet cleaning through the
protected tube inlets. Wide Bore Ensign Venturi Inserts were fitted
to all condenser tubes at the station and the tubes successfully
bulleted through the inserts. This station has been protected by
Ensign Venturi Inserts since 1978 and has never had to re-tube.
POWER
STATION C - Fit to worn tubes
A coal fired power
station was experiencing severe inlet erosion of its condenser tubes with
40% wall loss occurring after only three years. Custom Ensign Debris
Screen Venturi Inserts were manufactured to suit the worn tubes and fitted
to all tubes in two units. No further problems have been experienced
to date (over 5 years).
POWER
STATION D - Stop tube leaks
A UK power station was
experiencing large numbers of tube leaks caused by partial blockages of
the tubes. the incidence of tube leaks dropped by 42% after fitting
Ensign Debris Screen Venturi Inserts. This figure would have been
far higher had the station fitted the inserts to new tubes.
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