Accession Number:

ADA390594

Title:

Radiological Scoping and Characterization Surveys Workplan, 1963 Igloo 572 Accident (Former Medina Base) Lackland Training Annex, Lackland Air Force Base, Texas

Descriptive Note:

Final rept.

Corporate Author:

INSTITUTE FOR ENVIRONMENT SAFETY AND OCCUPATIONAL HEALTH RISK ANALYSIS BROOKSAFB TX SURVEILLANCE DIRECTORAT

Personal Author(s):

Report Date:

2000-12-01

Pagination or Media Count:

56.0

Abstract:

On 13 Nov 63, 50,500 kg of chemical high explosives detonated and destroyed igloo 572 on Medina Base Texas now Lackland Training Annex, Lackland AFB TX. The result of the blast was a complete vaporization of the igloo contents, a sizeable crater, and removal of some rock strata below the igloo. The contents of adjacent igloos were not impacted. Fortunately, site personnel received no serious personal injuries. The only known radioactive material dispersed as a result of the explosion was uranium metal that was comprised of both depleted and natural isotopic compositions. Fissile materials were not involved in the accident. Radiation surveys on-site and downwind from the site were accomplished immediately after the accident by Atomic Energy Commission personnel, other Federal government assets, and State of Texas radiation surveillance teams. The results of these surveys concluded that off-site areas were not impacted, however, on-site areas contained elevated uranium concentrations in soils. The highest activity concentration among on-site soil samples was 900 pCig of uranium. In May 2000, AFIERA performed a pilot scoping survey of the area with gamma radiation detection equipment, collection, and analysis of the soils for uranium and other radiological constituents. The results of this analysis indicated the presence of uranium in excess of background. The report contains description of proposed scoping and characterization survey work to be accomplished to further define the contamination zone and potentially provide final status conditions if remediation is not deemed necessary. The surveys follow the recommended approach of the Multi-Agency Radiation Survey and Site Investigation Manual.

Subject Categories:

  • Isotopes
  • Ammunition and Explosives

Distribution Statement:

APPROVED FOR PUBLIC RELEASE