WECC Policy Regarding Extreme Contingencies and Unplanned Events
The key element to preventing cascading outages for more common or foreseeable contingencies
is operating the system within known and defined secure system conditions as defined in the
WECC Minimum Operating Reliability Criteria and NERC/WECC Planning Standards.
It is not feasible or even possible to predict or prevent all multiple contingency events.
FROM http://www.wecc.biz/documents/library/procedures/WECC_POLICY12.pdf
Given these realities, what can be done to prevent contingency operations from hurting readiness?
FROM http://www.defenselink.mil/speeches/speech.aspx?speechid=824
The next step is to plan how to recover needed resources. In evaluating alternatives, it is necessary to consider what controls are in place to prevent and minimize contingencies.
FROM http://csrc.nist.gov/publications/nistpubs/800-12/800-12-html/chapter11.html
The above sentences are taken from the internet to help evaluating the statement, It's not idiomatic to say 'to prevent contingencies'.
Best regards.