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106 <br />Security Guidelines for the Electricity Sector: <br />Physical-Security <br />NERC <br />Guideline <br />Guideline Title: Physical Security <br />Version: 1.0 <br />Revision Date: <br />Effective Date: June 14, 2002 <br />Purpose: <br />Each company should consider implementing physical security measures to <br />safeguard personnel and prevent unauthorized access to critical equipment, <br />systems, material, and information at critical facilities. <br />Applicability: <br />This guideline applies to facilities and functions that are considered critical to the <br />support of the electricity infrastructure and the overall operation of the individual <br />company. <br />Each company is free to define and identify those facilities and functions it <br />believes to be critical, keeping in mind that the ability to mitigate the loss of a <br />facility through redundancies may make that facility less critical than others. <br />A critical facility may be defined as any facility or combination of facilities, if <br />severely damaged or destroyed, would have a significant impact on the ability to <br />serve large quantities of customers for an extended period of time, would have a <br />detrimental impact to the reliability or operability of the energy grid, or would <br />cause significant risk to public health and safety. <br />Guideline Statement: <br />This guideline recommends "best practices" for the electricity sector in the area <br />of physical security for facilities or functions identified as critical. It may be used <br />in conjunction with the Vulnerability and Risk Assessment guideline, which <br />assists companies in identifying critical facilities. <br />Table of Contents:. <br />Version 1.0 Security Guideline: Physical Security <br />June 14, 2002 Page 1 of 4 <br />North American Electric Reliability Council <br />