Formerly utilized MED/AEC sites remedial action program. Radiological survey of the former Horizons, Inc. , metal handling facility, Cleveland, Ohio. Final report. [Used in 1940--1950's for production of granular Th metal]

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The results of a radiological survey of the former Horizons, Inc., metal handling facility in Cleveland, Ohio, are presented in this report. During the 1940's and early 1950's, two of the three buildings on this site (Buildings B and C) were used for the production of granular thorium metal. The survey included measurements related to the following: fixed and transferable alpha and beta-gamma contamination levels on the surfaces in Buildings B and C and on the roofs of these buildings; external gamma radiation levels at 1 m above the floors and grounds on and near the property; radionuclide concentrations in ... continued below

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Pages: 137

Creation Information

Leggett, R W; Cottrell, W D; Shinpaugh, W H; Doane, R W; Haywood, F F & Johnson, W M February 1, 1979.

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Description

The results of a radiological survey of the former Horizons, Inc., metal handling facility in Cleveland, Ohio, are presented in this report. During the 1940's and early 1950's, two of the three buildings on this site (Buildings B and C) were used for the production of granular thorium metal. The survey included measurements related to the following: fixed and transferable alpha and beta-gamma contamination levels on the surfaces in Buildings B and C and on the roofs of these buildings; external gamma radiation levels at 1 m above the floors and grounds on and near the property; radionuclide concentrations in soil, water, and other materials collected from surfaces and drains inside Buildings B and C, from beneath the floor in Building C, and from outdoor locations on and near the site; and thoron (/sup 220/Rn) daughter concentrations in the air in Buildings B and C. Elevated concentrations of /sup 232/Th, /sup 228/Ra, /sup 228/Th, and /sup 230/Th were found in some samples. Alpha and beta-gamma contamination levels exceeded applicable guideline limits in some areas of Buildings B and C. External gamma radiation levels, approximately 10 times the average background level, were measured at isolated points in and near Building B. Thorium B (/sup 212/Pb) concentrations in air in Building B were near the Radioactivity Concentration Guide (RCG) level. Most of the elevated radiation levels were found indoors in areas presently used for storage. Outdoors on and near the site, significant radiation levels were found only near the east wall of Building B.

Physical Description

Pages: 137

Notes

Dep. NTIS, PC A07/MF A01.

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  • Report No.: DOE/EV-0005/10
  • Grant Number: W-7405-ENG-26
  • DOI: 10.2172/6323544 | External Link
  • Office of Scientific & Technical Information Report Number: 6323544
  • Archival Resource Key: ark:/67531/metadc1206521

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • February 1, 1979

Added to The UNT Digital Library

  • July 5, 2018, 11:11 p.m.

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  • Aug. 30, 2018, 5:11 p.m.

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Leggett, R W; Cottrell, W D; Shinpaugh, W H; Doane, R W; Haywood, F F & Johnson, W M. Formerly utilized MED/AEC sites remedial action program. Radiological survey of the former Horizons, Inc. , metal handling facility, Cleveland, Ohio. Final report. [Used in 1940--1950's for production of granular Th metal], report, February 1, 1979; United States. (digital.library.unt.edu/ark:/67531/metadc1206521/: accessed January 15, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.