Fig. 2. Vertical and horizontal cross-section of OBMR. (1) Small absorber ball
discharger; (2) lower graphite reflector; (3) lower graphite ball reflector; (4) reactor
core; (5) central graphite balls; (6) upper graphite ball reflector; (7) upper graphite
reflector; (8) small absorber ball storage container; (9) control rod driver; (10)
refueling penetration; (11) pressure vessel; (12) control rod; (13) outer graphite
ball reflector; (14) outer graphite reflector.