Accession Number:

AD0258246

Title:

DOSE ATTENUATION FACTORS FOR CONCRETE SLAB SHIELDS COVERED WITH FALLOUT AS A FUNCTION OF TIME AFTER FISSION

Descriptive Note:

Technical rept.

Corporate Author:

NAVAL CIVIL ENGINEERING LAB PORT HUENEME CA

Personal Author(s):

• Donovan, L. K.
• Chilton, A. B.

Report Date:

1961-06-01

Pagination or Media Count:

36.0

Abstract:

A study was made to investigate the dose attenuation of fallout gamma radiation by vari us thicknesses of concrete roofs of buried fallout shelters as a function of time after a nuclear detonation. A spectrum of energies is used for the fallout source rather than a single average energy as has been done in previous studies. Dose attenuation factors are derived and presented as a function of the above parameters. The Office of Civil and Defense Mobilization recommends a two-week shelter-stay time in the event of a nuclear attack therefore, also presented is an average dose attenuation factor for any fourteen-day stay time as a function of time of arrival of the fallout or of shelter-entry ti e for various roof thicknesses.

Descriptors:

• *CONCRETE
• *DOSE RATE
• *FALLOUT
• *FALLOUT SHELTERS
• *RADIATION DOSAGE
• NUCLEAR WARFARE
• NUCLEAR EXPLOSIONS
• TIME
• GAMMA RAYS
• UNDERGROUND STRUCTURES
• RADIOLOGICAL WARFARE
• FISSION
• RADIOACTIVE DECAY
• COUNTERMEASURES
• ATTENUATION
• SHIELDING
• DOSAGE
• THICKNESS
• CIVIL DEFENSE

Subject Categories:

• Nuclear Radiation Shielding, Protection and Safety
• Civil Defense
• Nuclear Warfare

Distribution Statement:

APPROVED FOR PUBLIC RELEASE