Flood Recovery Alert: Equipment Protection Action Steps

Flood Recovery Alert: Equipment Protection Action Steps

HARTFORD, Conn., Sept. 1 /PRNewswire/ -- The devastation that has resulted from Hurricane Katrina has caused, among other things, extraordinarily widespread and damaging floods. These floods have in many cases disabled vital equipment and systems that affect life safety and public health, and restoration of such machinery to operation is a matter of great need.

In the face of damage of such great scale, the following recommendations were prepared by The Hartford Steam Boiler Inspection and Insurance Company to assist persons in flood affected areas who own or operate equipment and machinery. Please share this information with others in your area that may benefit from it.

The Risk Does Not Recede with the Water.

If your equipment, machinery or electrical systems have been exposed to flood waters, you risk their loss even when the water level has dropped. Equipment and machinery may have water, silt or other contaminants within them. Your equipment could be damaged or destroyed if you attempt to start or test it without adequate cleaning and preparation for operation. DO NOT ATTEMPT TO OPERATE OR TEST YOUR EQUIPMENT WITHOUT PROPERLY RESTORING IT. Even when your equipment's exterior appears normal, residual moisture and contaminants can lead to permanent damage.

Dry and Clean Before Using

The following summarizes the steps to prepare your equipment for operation. Most actions involve careful draining, drying, cleaning or lubricating of equipment before attempting to start or energize it. Taking these precautions now can help you to avoid a major equipment failure and enable you to restore vital operations sooner.

Electrical Equipment
-- DO NOT ENERGIZE equipment that has been flooded until properly cleaned,
dried out, and until insulation has been tested. This includes
enclosures, bus ducts, conduit, and cables. Application of power to
wet circuits will usually result in serious damage that will require
repair or replacement. This is especially to be observed if the
equipment is vitally needed and obtaining a replacement could be
difficult. It is usually better to spend the necessary drying time
than to risk destruction of the equipment.

-- Windings in electric machinery should not be dried at temperatures
exceeding the rating of its insulation system. In general, a maximum
temperature of 194 degrees F or 90 degrees C may be used. Check with
the manufacturer for equipment specific information and
recommendations.

-- Dry type transformers should be cleaned and thoroughly dried as
described for windings.

-- Oil filled transformers should be thoroughly inspected for damage
including the insulation bushing and oil samples should be drawn from
the tank's top and bottom for analysis. Examine the sample for free
moisture in the form of moisture droplets or a cloudy appearance. The
laboratory should be instructed to include a Karl Fischer test for
dissolved water content. Maximum water content for equipment rated >=
69kv is 25 ppm and equipment rated at <69kv is 35 ppm. If water is
found in the oil, the oil charge must be dehydrated by a competent
service firm.

-- Circuit boards that have been immersed can sometimes be salvaged,
provided that they were not energized at the time of immersion, and
further provided that water sensitive components are not mounted to
them. This can be done by carefully washing the individual boards in
pure water and thoroughly drying before energizing.

Before Operating Machinery
-- Contact the manufacturer for its recommendations.

-- Inspect foundations for cracking, weakness, or settlement. If
settlement is suspected, check and correct alignment of all shafting,
and check all stationary components for level.

-- Inspect all machine internals for silt accumulations and clean as
needed.

-- Open the cylinders of all reciprocating engines or compressors that
have been immersed and remove foreign material or water.

-- Drain and clean lubrication systems. Wipe oil containing elements with
lint-free rags and refill with new lubricants as required. Monitor the
lubricant charge during the initial hours after resuming operation for
indications of water contamination and change lubricant if necessary.

-- Ball and roller bearings suspected of being contaminated by water and
debris should be opened, solvent cleaned, and then re-lubricated in
accordance with the manufacturer's instructions. When cleaning, be
especially careful to remove solid debris such as stone particles or
metal chips.

-- Carefully clean and TEST governors and controls. Many control systems
are electric. Refer to recommendations for Electrical Equipment above.

Boilers
-- Carefully inspect foundations and settings of boilers for settlement.
DO NOT OPERATE a boiler if there is any evidence that the foundation
has been undermined.

-- Make sure the setting (brickwork, refractory, and insulation materials)
is thoroughly dry. Use portable heaters where necessary. If the
boiler has been immersed in salt or brackish water, the casing and
insulation should be removed at least in wetted areas and the pressure
parts should be washed with fresh water. After such washing, new dry
insulation material should be applied and the casing re-installed.

-- All safety appliances, such as safety and relief valves, steam gage,
water column, low-water cutouts, and blow down must be cleaned and
repaired as needed.

-- All controls must be inspected and tested before operation, especially
the water level control and low-water fuel cutoffs.

-- Burners should not be fired until checked by a burner technician. An
explosion may occur if the combustion controls do not function
properly.

-- Boilers should not be operated if proper feed water is not available.
If operation is essential, and the boiler is to be run on untreated
potable water, it will be necessary to blow down the boiler every eight
hours and to open and clean the boiler internals at least once per week
until proper water quality is re-established. In addition to frequent
blow-down, and provided that clean make up water is available, it is
also helpful to run with maximum makeup flow while diverting as much
condensate as possible to sewer or drain until the boiler water quality
returns to normal.

[These recommendations are general guidelines and are not intended to be exhaustive or complete nor are they designed to replace information or instructions from the manufacturer of your equipment.]

The Hartford Steam Boiler Inspection and Insurance Company is a global specialty insurer and reinsurer. One of the world's leading equipment breakdown insurers, Hartford Steam Boiler helps clients reduce risk through a unique combination of specialty coverages, engineering-based risk management strategies and loss reduction services. For more information about Hartford Steam Boiler visit its website at http://www.hsb.com/ .

Source: The Hartford Steam Boiler Inspection and Insurance Company

CONTACT: Dennis Milewski of Hartford Steam Boiler, +1-860-722-5567,
Dennis_Milewski@hsb.com; or Wayne E. Travers Jr. of Cubitt Jacobs & Prosek
Communications for Hartford Steam Boiler, +1-203-378-1152 ext 111,
wayne@cjpcom.com

Web site: http://www.hsb.com/

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