![]() ![]() ![]() This report refers to the FEMA Federal Regional Center (FRC) in Bothell, Washington. The purpose of this report is to develop an engineering design package to protect the Federal Emergency Management Agency (FEMA) National Radio System (FNARS) facilities against the effects of high-altitude electromagnetic pulses (HEMPS). « lessĪuthors: Crutcher, R I Buchanan, M E Jones, R W Publication Date: Fri Nov 01 00:00: Research Org.: Oak Ridge National Lab., TN (United States) Sponsoring Org.: Federal Emergency Management Agency, Washington, DC (United States) OSTI Identifier: 10114260 Report Number(s): ORNL/FEMA-91/1 ON: DE92006662 DOE Contract Number: AC05-84OR21400 Resource Type: Technical Report Resource Relation: Other Information: PBD: Nov 1991 Country of Publication: United States Language: English Subject: 45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY ELECTROMAGNETIC PULSES COMMUNICATIONS PHYSICAL RADIATION EFFECTS US FEMA EMERGENCY PLANS SURVEYS RADIO EQUIPMENT WASHINGTON RETROFITTING NUCLEAR EXPLOSIONS TELEPHONES POWER DISTRIBUTION SYSTEMS LIGHTING SYSTEMS EQUIPMENT PROTECTION DEVICES 450200 440200 NUCLEAR EXPLOSIONS AND EXPLOSIVES RADIATION EFFECTS ON INSTRUMENT COMPONENTS, INSTRUMENTS, OR ELECTRONIC = , Results of the survey are presented along with recommendations for tailored retrofit hardening measures to be implemented to protect the facility from EMP. To identify the critical systems in the facility and the EMP coupling paths into these systems, an EMP survey of the facility was conducted. This report identifies the systems in the facility considered critical for emergency option. This report addresses electromagnetic pulse (EMP) effects only, and disregards any condition in which radiation effects may be a factor. To the extent economically viable, protective actions more » have been recommended for implementation, along with necessary changes or additions, during the period of the FNARS upgrade program. If is the intent of this report to define the particular hardening measures that will minimize the susceptibility of the network components to HEMP effects. The solution must then be to reduce HEMP-induced stresses on the system by means of tailored retrofit hardening measures using commercial protection devices when available. The equipment under stress has already been designed and built so that little opportunity exists for equipment design changes that could raise the threshold levels at which malfunctions occur. To maintain the viability of the FEMA hf radio network during such a situation, the FNARS facilities must take measures to protect against the effects of HEMP that are likely to be created in a nuclear confrontation. It is highly probably that there will be a heavy dependence upon high-frequency (hf) radio communications for long-haul communications following a nuclear attack on the continental United States, should one occur. ![]()
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