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If the reactor coolant pumps are not running, the upper part of the core will be exposed to a steam environment and heatup of the core will begin.
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If and reactor
If available, inhabitants may take potassium iodide at the rate of 130 mg / day per adult ( 65 mg / day per child ) as an additional measure to protect the thyroid gland from the uptake of dangerous radioactive iodine, a component of most fallout and reactor waste.
If a reactor needs to be frequently shut down, NaK is used ; due to it being liquid at room temperature, cooling pipes do not freeze.
If the nuclear reactor is left on the ground and its energy transmitted to the spacecraft, the weight of the reactor is removed as well.
If the reactor and the ballistic missiles explode while the K-19 is surfaced, the resulting nuclear blast will destroy not only the K-19 but also the nearby US navy ship and, most likely, the NATO base as well.
If cooling fails during this post-shutdown period, the reactor can still overheat and meltdown.
If heavy water is used, it is possible to operate the reactor with natural uranium, but the production of heavy water requires large amounts of energy and is hence expensive.
If helium is used, because it is lighter than air, air can displace the helium if the reactor wall is breached.
If the heat from that reaction is not removed adequately, the fuel assemblies in a reactor core can melt.
If necessary, the emergency power supply allows the safe shut down of the nuclear reactor.
While criticality at fast energies may be achieved with uranium enriched to 5. 5 weight percent Uranium-235, fast reactor designs have often been proposed with enrichments in the range of 20 percent for a variety of reasons, including core lifetime: If a fast reactor were loaded with the minimal critical mass, then the reactor would become subcritical after the first fission had occurred.
If all of the independent cooling trains of the ECCS fail to operate as designed, this heat can increase the fuel temperature to the point of damaging the reactor.
If the coolant is a liquid, it may boil if the temperature inside the reactor rises.
If the void coefficient is large enough and control systems do not respond quickly enough, this can form a positive feedback loop which can quickly boil all the coolant in the reactor.
If the reactor overheats, thermal expansion of the metallic fuel and cladding causes more neutrons to escape the core, and the nuclear chain reaction can no longer be sustained.
If the reactor vessel developed excessive heat or lost electric power to the air cooling, the plug would melt ; the FLiBe would be pulled out of the reactor core by gravity and criticality would cease as the salt lost contact with the graphite.
If the reactor is shot enough the turrets will cease firing for a short amount of time.
If the refiner wants to produce alkanes ( i. e., hydrocarbons present in natural gas, gasoline, and diesel fuel ), the coal gas is collected at this state and routed to a Fischer-Tropsch reactor.
If the primary cooling loop were to be somehow suddenly stopped, or if the control rods were suddenly removed, the metal fuel can melt as accidentally demonstrated in EBR-I, however the melting fuel is then extruded up the steel fuel cladding tubes and out of the active core region leading to permanent reactor shutdown and no further fission heat generation or fuel melting.
If no cooling system is working to remove the decay heat from a crippled and newly shut down reactor, the decay heat may cause the core of the reactor to reach unsafe temperatures within a few hours or days, depending upon the type of core.
If and coolant
If plain water were to be used as an engine coolant, it would promote galvanic corrosion.
If engine coolant leaks, boils, or if the cooling system needs to be drained and refilled, the antifreeze's freeze protection will need to be considered.
If the fuel cladding around the fuel develops holes, then fission products can leak into the primary coolant.
If this coolant flow is reduced, or lost altogether, the nuclear reactor's emergency shutdown system is designed to stop the fission chain reaction.
If enough coolant entered the engine, it would stretch the head bolts allowing the head gaskets to blow.
If molten metal is the armature fluid of an MHD generator, care must be taken with the coolant of the electromagnetics and channel.
If, however, the cladding is damaged, those fission products ( which are not immobile in the uranium dioxide matrix ) can enter the reactor coolant or storage water and can be carried out of the core, into the rest of the primary cooling circuit, increasing contamination levels there.
If the Engine coolant temperature sensor is showing the engine has not warmed up yet, more fuel will be injected ( causing the engine to run slightly ' rich ' until the engine warms up ).
If and pumps
If a gas powered pump can drain a pool in 4 hours and a battery powered pump can drain the same pool in 6 hours, then it will take both pumps
If rotary pumps are operated at high speeds, the fluids will cause erosion, eventually developing enlarged clearances through which liquid can pass, reducing the efficiency of the pump.
If the lake elevation goes any higher, the Jordan River pumps and gates are left open.
If the ion pumps are turned off by removing their energy source, or by adding an inhibitor such as ouabain, the axon can still fire hundreds of thousands of action potentials before their amplitudes begin to decay significantly.
If the player drops a rock on a foe at the same time he pumps it to death, a glitch will occur whereupon all enemies will promptly disappear, but the game will not progress and the player will be free to dig through all dirt.
If all the pumps were converted, the entire facility could produce up to 40 megawatts of power.
If the wells were productive under artificial lift the fires would have self extinguished from lack of fresh oil when the pumps were shut off.
If heavy rain falls during high-tide, the crest gates remain closed and giant drainage pumps are activated to pump excess water out to sea.
If you are using good air pumps, this is not always needed, since the air pumps will refresh the air above the water.
If and are
If it were not for an old professor who made me read the classics I would have been stymied on what to do, and now I understand why they are classics ; ;
If I even hint at it do you think it will matter that you are his nephew -- and not even a blood nephew ''??
If the circumstances are faced frankly it is not reasonable to expect this to be true.
If his dancers are sometimes made to look as if they might be creatures from Mars, this is consistent with his intention of placing them in the orbit of another world, a world in which they are freed of their pedestrian identities.
If love reflects the nature of man, as Ortega Y Gasset believes, if the person in love betrays decisively what he is by his behavior in love, then the writers of the beat generation are creating a new literary genre.
If to be innocent is to be helpless, then I had been -- as are we all -- helpless at the start.
Defoe then commented, `` If they Could Draw that young Gentleman into Their Measures They would show themselves quickly, for they are not asham'd to Say They want only a head to Make a beginning ''.
If Jews are identified as a religious body in a controversy that comes before a national or international tribunal, it is obviously compatible with the goal of human dignity to protect freedom of worship.
If they are right, they will prevail of and by themselves.
Without preliminaries, Esther asked him, `` If you are a world citizen, will you take Garry Davis' place in his tent while he goes to the hospital ''??
If we are to believe the list of titles printed in Malraux's latest book, La Metamorphose Des Dieux, Vol. 1 ( ( 1957 ), he is still engaged in writing a large novel under his original title.
If the would-be joiner asks these questions he is not likely to be duped by extremists who are seeking to capitalize on the confusions and the patriotic apprehensions of Americans in a troubled time.
If we break the minister to our bit, we are buying back our own sins.
If the record buyer's tastes are somewhat eclectic or even the slightest bit esoteric, he will find them satisfied on educational records.
If Daddy's books are out of bounds his own picture books are not.
If it will simply delay the debates until the qualifications are closed next spring, and then carry all the candidates on a tour of debates, it can provide a service to the state.
If they are to be commended for foresight in their planning, what then is the judgment of a town council that compounds this problem during the planning stage??
If the Communists are sincere in wanting a united, neutral and disarmed Germany, it might well be advantageous for the German people in this nuclear age.
If only this could be done more often -- with such heartening results -- many of the earth's `` big problems '' would shrink to the insignificances they really are.
If any are left, presently, we may expect to see signs specifically prohibiting the feeding of them too.
If the raw population figures are crucially relevant, then it is idle to think of liberation, as idle as to suppose that Poland might liberate Russia.
If it is not enough that all of our internationalist One Worlders are advocating that we join this market, I refer you to an article in the New York Times' magazine section ( Nov. 12, 1961 ), by Mr. Eric Johnston, entitled `` We Must Join The Common Market ''.
If the UN troops are not mercenaries then the Hessians were not mercenaries either.
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