ST-01:   Tank Failures Recognizing the Hidden And Not So Hidden Threats to All Cold Water Storage Tanks Steel cold domestic water storage tanks, often called house tanks, are generally viewed as low maintenance, long service life structures necessary to most larger building properties and some process plants.  The taller or larger the property, the more tanks which may exist, and larger in size.  In addition to providing a cold water supply at the appropriate pressures, they often also provide reserve water for fire protection, and range in size from 2,000 gallons to 60,000 gallons and greater. Those used for potable water storage, by law and local codes, must be regularly cleaned and sterilized on the inside by licensed professionals in order to satisfy health concerns, although often remain neglected.  Tanks situated in moderate to high traffic areas typically receive a coat of paint on the exterior of their exposed and accessible surfaces and are well maintained.  Those tanks which are hidden away in basements, roof areas, and corner storage rooms, not surprisingly, are often ignored. On the inside, corrosion protection is achieved strictly by…