GAMMA-RAY SHIELDING EFFECTS OF METAL DOORS IN DUCTS

Abstract

Results are presented of an experiment carried out on the shielding effects of a steel door in a twolegged 11x11-in. concrete duct using Co60 as a gamma-ray source. Two door positions and two door thicknesses were used. A relatively strong inscatter effect was measured when the door was placed at the corner where direct radiation was received. When a 3/8-in. steel door was placed in the second leg 22 in. from the corner, the radiation was reduced 50 to 60%. It can be expected that the farther down the second leg the door is placed, the less radiation it will transmit; that the thicker the door, the greater its shielding effectiveness will be. A method of scaling the results to large ducts is presented based on the experimental measurements.

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Document Details

Document Type
Technical Report
Publication Date
Jan 11, 1965
Accession Number
AD0454729

Entities

People

  • J. S. Grant
  • P. R. Bryson

Organizations

  • Naval Facilities Engineering Service Center

Tags

Communities of Interest

  • Biomedical
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Civil Defense
  • Civil Engineering
  • Concrete
  • Construction
  • Department Of Defense
  • Dose Rate
  • Engineering
  • Engineers
  • Gamma Rays
  • Geometry
  • Government Procurement
  • Navy
  • Public Health
  • Radiation Shielding
  • United States Naval Academy
  • Warfare

Readers

  • Electrical Engineering
  • Nuclear and Radiation Engineering.