The Nuclear Ship Savannah / First Atomic Merchant Ship, One of the World's Safest Ships

by United States. Department of Commerce; United States. Maritime Administration; U.S. Atomic Energy Commission

SECONDARY SHIELDING

The containment shell completely surrounds the primary (reactor) system, and serves not only to confine spread of radioactivity in the event of a rupture of the system but to support the hundreds of tons of lead and polyethylene of the secondary shield.