(prepared from Porphyra red algae; Table 24) from near Windscale, the dose is up
to 22% of the permissible dose.
For 26,000 people in Wales "laver-bread" is a speciality; it is prepared from the alga
Porphyra which extensively accumulates ruthenium including ruthenium-106. In
the meantime, however, the last fishermen of Porphyra from Windscale have retired,
so that no more contaminatedPorphyra is being used (Hetherington 1976).
Applying the stricter guiding principles of the Federal Republic of Germany for our
calculations, the resulting percentage figures are much higher.
In a book about the contamination of the ocean, no well-based discussion can be
given concerning the points of controversy such as: the maximum additional radiation dose that man can still endure, the genetic consequences and whether the risk
of cancer will increase if the radiation dose in man's environment is raised to twice
the amount of natural radiation. It is, however, legitimate to ascertain that momentarily the radiation caused by man in the world oceans has only risen by a fraction
of the natural radiation, and that there are only very few problematic areas.
The fact that this phenomenon is identifiable and can even be put down in figures,
is because radioactivity can, even in very low quantities, be measured about 1 million
times more accurately than radioactive and other elements can be analyzed with the
best chemo-analytic methods. Even though it is encouraging that man's activities
have, up to now, only led to a minimal radioactive contamination of the world
oceans, one should still consider the potential of radioactivity stored in the nuclear
weapon arsenals of the nuclear super-powers, and what quantities of radioactivity,
from nuclear plants no more in operation, are waiting for a secure, permanent storage.
Oceanology will have to carefully register the further development.
119
to 22% of the permissible dose.
For 26,000 people in Wales "laver-bread" is a speciality; it is prepared from the alga
Porphyra which extensively accumulates ruthenium including ruthenium-106. In
the meantime, however, the last fishermen of Porphyra from Windscale have retired,
so that no more contaminatedPorphyra is being used (Hetherington 1976).
Applying the stricter guiding principles of the Federal Republic of Germany for our
calculations, the resulting percentage figures are much higher.
In a book about the contamination of the ocean, no well-based discussion can be
given concerning the points of controversy such as: the maximum additional radiation dose that man can still endure, the genetic consequences and whether the risk
of cancer will increase if the radiation dose in man's environment is raised to twice
the amount of natural radiation. It is, however, legitimate to ascertain that momentarily the radiation caused by man in the world oceans has only risen by a fraction
of the natural radiation, and that there are only very few problematic areas.
The fact that this phenomenon is identifiable and can even be put down in figures,
is because radioactivity can, even in very low quantities, be measured about 1 million
times more accurately than radioactive and other elements can be analyzed with the
best chemo-analytic methods. Even though it is encouraging that man's activities
have, up to now, only led to a minimal radioactive contamination of the world
oceans, one should still consider the potential of radioactivity stored in the nuclear
weapon arsenals of the nuclear super-powers, and what quantities of radioactivity,
from nuclear plants no more in operation, are waiting for a secure, permanent storage.
Oceanology will have to carefully register the further development.
119