| 摘要 |
<p>1,247,689. Reactors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 23 May, 1969 [10 June, 1968], No. 27580/68. Heading G6C. The plug 1 closes the aperture in the prestressed concrete pressure vessel 5 which houses a gas-cooled reactor and steam-generating heat exchangers. The lower portion 1a of the plug is bonded to a steel thimble 2, and the upper portion 1b is bound by the prestressing cable 4. A gas-tight seal is formed between the flanges 3, 7. Feed-water and steam pass through the pipes P in the shutter tubes 19, each of which is lined by the heat insulation 20.</p> |
