Supplemental grounding of extended emp collectors. Final report, 1 May 1980-31 January 1982

Technical Report · Sun Jan 31 04:00:00 EST 1982

OSTI ID:5397602

Denny, H W; Acree, D W; Melson, G B; Millard, D P

The external conductors of a facility, particularly long, above ground types, pose a severe EMP threat. A primary purpose of this program was to investigate the premise that supplemental ground connections in these types of conductors could serve to reduce this threat. To support this investigation an External Collector Analysis Model (ECAM) was developed. ECAM was applied to analyzing the EMP-induced current levels appearing at a facility under various conditions of line length, line height, and number of grounds. From the results, approaches to the treatment of external collector penetrations are suggested. In addition to the external collector assessments, preliminary studies of internal collector responses are reported. Supplemental studies of techniques for measuring the responses of earth electrode systems over the EMP power spectrum are described. A successful technique utilizing currently available instrumentation was used to validate a test probe and to evaluate scaled models of various commonly used earth electrode geometries. From the measurements, observations relating to the behavior of various geometries up to 500 MHz are made.

• Research Organization: Georgia Inst. of Tech., Atlanta (USA). Energy and Material Sciences Lab.
• OSTI ID: 5397602
• Report Number(s): AD-A-131255/2
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420800* -- Engineering-- Electronic Circuits & Devices-- (-1989)
ACCUMULATORS
CONTAINERS
DIMENSIONS
ELECTRIC CONDUCTORS
ELECTRIC GROUNDS
ELECTRODES
ELECTROMAGNETIC PULSES
ELECTROMAGNETIC RADIATION
EXPLOSIONS
GEOMETRY
HEIGHT
LENGTH
MATHEMATICS
NUCLEAR EXPLOSIONS
PROBES
PULSES
RADIATIONS
SHIELDING
SIMULATION
TANKS