King County Water District #90
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Renton, WA 98059
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January 1, 2017Preventing Frozen Pipes

Freezing weather often approaches unexpectedly and many organizations find themselves unprepared. Organizations with buildings located in a moderate climate are often more at risk of facing frozen pipes and water damage due to the lack of experience or attention given to cold weather preparation.

When water freezes, it expands up to ten percent in volume. It is important to note that fire sprinkler pipes tend to freeze before other water pipes because the water is not moving. When water freezes in a sprinkler pipe, it creates an obstruction that can make the system inoperable during a fire. As ice in the pipe expands, added pressure can cause the pipe to burst.

As freezing temperatures approach, the following guidelines will help organizations identify areas venerable to freezing conditions and provide tips for prevention of frozen pipes.

Prior to Cold Weather:

  • Develop a water intrusion plan that includes winterization.
  • Identify buildings, equipment, processes and piping (wet and dry) that are dependent upon heat (or above freezing temperatures) for safety and proper operation; this may include sprinkler piping, domestic water piping, sewer piping and any process that contains a liquid vulnerable to freezing.
  • Minimize the exterior openings to all buildings, especially vacant buildings.
  • Drain liquids from any idle equipment and piping where appropriate.

During Cold Weather:

  • Monitor weather temperatures in vulnerable areas. Critical operations and areas should be monitored with low temperature alarms connected to a monitoring station.
  • Close windows, vents and doors of buildings and insulate where possible. Tarps may be used to provide temporary wind breaks.
  • Increase security rounds in areas that are susceptible to pipe freezing and water damage.
  • Maintain an inside temperature above 40 degrees Fahrenheit. Place portable heaters in areas that may be subject to freezing. Conduct routine inspections of portable heaters.

NOTE: Fires often result from the misuse of temporary heaters. When purchasing or renting a temporary heater, the heater should carry the Underwriters Laboratories listed label. Temporary heaters also should have standard safety controls, such as high-temperature cut-outs, flame supervision, flame failure and preset safety regulators. Heaters must be placed away from combustible materials and operated according to manufactures instructions.

In the event all efforts fail to keep a building heated and temperatures drop below 32 degrees Fahrenheit, it may be necessary to shut off and completely drain wet pipe fire sprinkler systems to prevent further damage. Any sprinkler system shut down must be done for the shortest possible duration and fire system impairment procedures must be followed.

  • If pipes freeze, turn off the water supply and repair the damaged piping. If the frozen pipe is part of a fire sprinkler system, Fire Impairment Procedures should be implemented.
  • Do not use open flames to thaw frozen pipes or other equipment.

Should you have further questions on cold weather preparation for you building, please do not hesitate to contact Alliant Risk Control Consulting at RiskControl@Alliant.com.

January 13, 2020Court Upholds King County Ordinance Requiring Franchise Compensation for Use of Right-of-Way

For more information on the Washington Supreme Court decision and King County's ability to charge a "rental fee" on water, sewer, gas and electrical utilities for residents in unicorporated King County. 

Get article here

January 6, 2020King County - Approved to Charge Right of Way Rental Fee on Utility Bills

Beginning in January 2020, King County will begin to charge customers in unincorporated King County a rental fee for use of the Right of Way on their water, sewer, gas and electricity bills. 

King County will charge a Right of Way Rental Fee

August 30, 2019KCWD90 Automatic Payment Plan Application

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April 12, 2018Proposed Lakeside Industries Asphalt Plant - Reagan Dunn

Extend the moratorium on rural industrial land uses near the Cedar River

April 29, 2016FAQ Regarding Current Lead Issues

Please click to open the form.

We anticipate higher than usual calls from customers due to the recent lead issues in the news. To be sure,we are consistent in our messaging;we have put together a response for the customers.

 

 

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