Tube Fouling, Corrosion and Cleaning
Condenser
Assessment
Condenser Tube
Material Selection
Condenser
Repair
Potpourri
100

The most common reason for a rise in condenser back pressure
not including excessive air in-leakage into the condenser
What is tube fouling or deposits?
100

The name for the bottom most portion of a steam condenser
that captures condensate
What is hotwell?
100

These materials are resistance to MIC and/or stress corrosion cracking
What are titanium and Super-Ferritic Alloys?
100

A common name of the expansion joint
between the turbine exhaust and the condenser neck?
What is dog-bone expansion joint (or dog-bone)?
100

This man is credited with the invention of the modern day steam surface condenser?
Who is James Watt?
200

This type of tube deposit's elemental name is CACO3
What is calcium carbonate?
200

Daily Double!!!

The number of years of maintenance history
that should be reviewed when performing an overall condenser assessment
What is 5 years?
200

This is the metal that moves with the steam to boiler tubes and turbine blades
What is copper?
200

This is the most widely used process for joining condenser tubes to a tube sheet
What is mechanical expansion (or roller expansion)?
200

This exotic tracer gas can be detected at levels of one part per ten billion parts air?
What is SF6 or (sulfur hexafluoride)?
300

DAILY DOUBLE!!!

This type of corrosion mechanism, containing live organisms
can result in premature tube failure
What is microbiological influenced corrosion?
300

This type of condenser assessment involves the use of equipment
that measure electro magnetic currents for the assessment of tube integrity
What is eddy current testing?
300

DAILY DOUBLE!!!

This is the super-ferritic stainless steel
best known for success in seawater and MIC
What is Sea-Cure?
300

DAILY DOUBLE!!!

The force exhibited on the condenser shell by the operating vacuum
What is uplift?
300

DAILY DOUBLE!!!

These are the two types of cathodic protection
What are Galvanic and Impress Current?
400

This coarse debris often circumvents the raw water intake screen and blocks the condenser
What is debris carry-over?
400

A spike in condensate conductivity may be an indication of a
What is condenser tube leak?
400

This element is what differentiates austenitic from super-ferritic tubing
What is nickel?
400

An alternative to utilizing tube inserts
for the prevention or protection of inlet end erosion?
What is tube end coating?
400

This person first added a condenser to the steam engine
Who is James Watt?
500

This type of corrosion is commonly found hiding beneath the surface
What is under-deposit corrosion?
500

Steam impingement, ammonia grooving and fretting are all examples of this
What are forms of OD tube damage?
500

This tube material has a natural inherent resistance to biofouling
What are copper alloys?
500

This testing is commonly used to determine optimum
tube-to-tubesheet joint strength and qualify tube expansion parameters
What is a Pull-Out Test?
500

Which ASME code is applicable for the acceptance of steam surface condensers?
What is PTC 12.2 (or 12.2)?
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