EVALUATION OF BURIED CONDUITS AS PERSONNEL SHELTERS

Technical Report · Thu Jul 14 00:00:00 EDT 1960

DOI:https://doi.org/10.2172/4816066· OSTI ID:4816066

Albright, G H; LeDoux, J C; Mitchell, R A

Supersedes ITR-1421. Twelve large-diameter buried conduit sections of various shapes were tested in the 60- to l49-psi overpressure region of Burst Priscilla to make an empirical determination of the degree of personnel protection afforded by commercially available steel and concrete conduits at depths of burial of 5, 7.5, and 10 feet below grade. Essentially, it was desired to assure that Repartment of Defense Class I, 100psi and comparable radiations, and Class II, 50-psi and comparable radiations, protection is afforded by use of such conduits of various configurations. Measurements were made of free-field overpressure at the ground surface above the structure; pressure inside the structures; acceleration of each structure; deflection of each structure; dust inside each structure; fragmentary missiles inside the concrete structures; and gamma and neutron radiation dose inside each structure. All buried conduit sections tested provided adequate Class I protection for the conditions under which the conduits were tested. Standard 8-foot concrete sewer pipe withstood 126-psi overpressure without significant damage, minor tension cracks observed; standard 10-gage corrugated-steel 8-foot circular conduit sections withstood 126- psi overpressure without significant damage; and standard 10-gage corrugated- steel cattle-pass conduits withstood 149-psi overpressure without significant damage. Durations of positive pressure were from 206 to 333 milliseconds. (auth)

• Research Organization: Bureau of Yards and Docks; and Naval Civil Engineering Lab., Port Hueneme, Calif.
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-009031
• OSTI ID: 4816066
• Report Number(s): WT-1421
• Resource Relation: Other Information: Project 3.2 of OPERATION PLUMBBOB; Supersedes ITR-1421. Orig. Receipt Date: 31-DEC-62
• Country of Publication: United States
• Language: English

Related Subjects

HEALTH AND SAFETY
CATTLE
CONCRETES
CONFIGURATION
CRACKS
DIFFRACTION
DUSTS
EARTH
FAILURES
GAMMA RADIATION
IRRADIATION
MATERIALS TESTING
MISSILES
NEUTRONS
NUCLEAR EXPLOSIONS
PARTICLES
PIPES
PRESSURE
RADIATION EFFECTS
RADIATION PROTECTION
RADIATIONS
SAFETY
SHELTERS
STABILITY
STANDARDS
STEELS
SURFACES
TESTING