Outer fjord

Observation 5.1 A coronoid C with an outer cove or an outer fjord (on the outer perimeter of C) cannot be circumscribed. 

Figures 22 and 23 show the same scenarios for the units in Abrosimov Fjord. These diagrams are a summation of the releases from all the units, with and without SNF, and take into account their different dumping dates. The units were dumped in their RCs, which represents an outer containment barrier, and again, the units with SNF have an interior protection of Furfurol(F).

Release rates for all the radionuclides were calculated from objects in each fjord. As an example, using the best estimate scenario and summing the contribution form all the Qords with PWRs, it was shown that a release rate peak of3000 GBq a occurs around the year 2040 when the PWR containments are partially breached, and there is another peak of 2100 GBq in the year 2305, when the icebreaker SNF container corrodes open. However, for a large part of the time, release rates lie between 20 GBq a and 2 GBq a. Some very low levels of activation product releases might be expected, a decade or so into the next century from the corrosion of the outer walls of the RPVs. 

OK-ISO 1967 Tsivoika Fjord a. Pontoon b. Outer container steel box with welded lid c. Inner container - steel clad concrete box with welded lid a. Unsound b. 30% corroded - sound c. 20% corroded - sound a. Unsound b. 45% corroded - sound c. 35% corroded weakened Pontoon niity not be used for recovery purposes. Containers remain intact... 

The presence of outer coves and fjords in C is a sufficient, but not necessary condition for the impossibility to circumscribe C. The below examples are adapted from a corresponding discussion for benzenoids by Brunvoll, Cyvin BN and Cyvin (1992b). The depicted single coronoids cannot be circumscribed. 

The situation for coves is different every cove (inner or outer) of C is evidently available for addition of a hexagon. A fjord of C is always available for addition except for the inner fjords of a naphthalene hole it is not allowed to immerse a hexagon into a fjord of a naphthalene hole of C when a new coronoid is supposed to be generated. 

---