As outdoor air temperatures drop, it is important for chemical and other facilities to be prepared for the unique safety challenges posed by cold weather, such as the hazards of water freezing and expanding, which can damage equipment or cause instrumentation to fail. When the temperature drops, the freezing process begins, and materials expand. This can crack or break pipes and rupture or damage process equipment. This damaged equipment may not become evident until the temperature rises, the ice thaws, and a leak develops. More subtle hazards may also exist, such as the formation of a hydrate, where water chemically combines with a compound, forming a solid that can also block process piping. This can happen even above freezing temperatures.
This digest summarizes three Chemical Safety Board investigations where ineffective freeze protection practices and programs were found to be causal to the incident. The document also provides the key safety lessons from these incidents, as well as additional freeze protection guidance and resources.
You are accessing a U.S. Government information system.
Unauthorized or improper use or access of this system may result in disciplinary action, as well as civil and criminal penalties.
By using this information system, you understand and consent to the following:
You have no reasonable expectation of privacy when you use this information system; this includes any communications or data transiting,
stored on or traveling to or from this information system. At any time, and for any lawful government purpose, the government may monitor,
intercept, search and seize any communication or data transiting, stored on or traveling to or from this information system.
The government may disclose or use any communications or data transiting, stored on or traveling to or from this information system for any lawful government purpose.
Classified or Official Use Only information is not allowed on this website.
Need help? Contact the System Administrator 509-376-4821 or
firstname.lastname@example.org. Their hours of operation are 6 AM to 4 PM PT Monday through Thursday.