Atomka Traditional Geocache
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[SK]
Atomove elektrarne Bohunice (EBO) je komplex troch atomovych
elektrarni (A-1, V-1 a V-2).
A-1 bola spustena 24. 10. 1972. Bola to prva atomova elektraren v
byvalom Ceskoslovensku a jedina s experimentalnym tazkovodnym
plynom chladenym jadrovym reaktorom KS-150 vyuzivajucim prirodny
neobohateny uran. Projekt elektrarne mal vyskumny a vyvojovy
charakter a preto elektraren trpela castymi havariami a
neplanovanymi odstaveniami.
5. 1. 1976 bola vystrelena palivova kazeta z jedneho kanala
reaktora pri vymene paliva pocas prevadzky. Personal s nasadenim
zivota v plynovych maskach nastastie eliminoval poruchu utesnenim
kanala zavazacim strojom. V opacnom pripade hrozila strata
chladiaceho kyslicnika uhliciteho, roztavenie aktivnej zony
reaktora a nekontrolovatelna reakcia. Dvaja pracovnici udrzby
zahynuli udusenim, pretoze unikovy vychod bol uzamknuty kvoli
castym kradeziam.
Najhorsia jadrova havaria v Ceskoslovensku sa stala 22. 2. 1977.
Pocas vymeny paliva pri zasuvani cerstvej kazety do reaktora, v
ktorej boli zabudnute zvysky chemickeho absorbatora vlhkosti. Po
zasunuti doslo k znizenej priechodnosti plynu kazetou, k jej
prehriatiu, roztaveniu a prepojeniu okruhov chladiaceho CO2 a
tazkej vody. Pri nehode doslo ku kontaminacii primarneho a
sekundarneho okruhu.
Havaria bola pred verejnostou utajena.
V dosledku tejto havarie bola jadrova elektraren A-1 uzavreta a od
roku 1979 prebieha jej dekontaminacia a likvidacia.
Planovanie vystavby A-2 bola ukoncene a namiesto toho bola prijata
vo svete najrozsirenejsia koncepcia tlakovodnych reaktorov a bol
pouzity sovietsky projekt VVER 440 na vystavbu V-1 a neskor
V-2.
EBO je pristupne z Jaslovskych Bohunic, ale ku cache sa dostanes od
obce Nizna alebo Velke Kostolany - pozri doplnujuci waypoint.
[EN]
The Bohunice Nuclear Power Plants is a complex of three nuclear
power plants (A-1, V-1 and V-2).
A-1 was opened on October 24, 1972. It was the first nuclear power
plant in former Czechoslovakia and the one and only with
experimental heavy water gas cooled nuclear reactor KS-150. Because
of its experimental design the power plant suffered from accidents.
On January 5, 1976 two workers were killed due to leak of carbon
dioxide used as a coolant.
On February 22, 1977, during fuel change, a combination of human
mistake and design problem caused the worst nuclear accident in
Czechoslovakia. Part of fuel rods was replaced while the reactor
was active. Humidity absorber covering the rods was not removed
causing local overheating of the fuel (transmission of heat to the
coolant gas was reduced). The active zone was damaged, heavy water
got in contact with the coolant and both primary and secondary
circuits were contaminated.
The accidents were kept in secret.
The decomissioning, decontamination and dismanting the plant still
continues...
Plan to build the second reactor block A-2 was cancelled. The
world's most widespread concept of pressurized reactors was adopted
and the Soviet-era design VVER-440 was used in constructing the
nuclear power plants V-1 and V-2.
The power plant is accessible from "Jaslovske Bohunice". But the
cache is accessible from other side from "Nizna" or "Velke
Kostolany" - see additional waypoint.
Additional Hints
(Decrypt)
[SK] Qhgl fgebz
[EN] Ubyybj gerr