FIELD: nuclear power engineering; shutdown cooling systems of nuclear steam generating plants. SUBSTANCE: shutoff devices 12 at inlet 10 and outlet 11 of air draft channel 7 have ducts 13 interconnected in pairs by means of hinges 16 and provided with bottoms. Side surfaces of ducts 13 have through holes 15; dust 13 at outlet 11 of air draft channel 7 is joined with crossbar 17 and flexible member 18 brought outside through air draft channel wall by means of swivel members 19 and joined with counterpoise 21 engageable with electromagnetic lock 22 of operating member 23. EFFECT: improved design. 2 dwg
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Authors
Dates
1996-08-10—Published
1991-07-01—Filed