Investigation of Safeguards Management for Operation Security of Nanoscale Nuclear Material in Nuclear Power Plants Using Game Theory - Atomic Nanoscale Technology in the Nuclear Industry - page 140

TABLE 11.7
Concealment.Methods.for.Safeguard.Monitoring

Content PlausibleValue

Fuel.rod.removal.from.new.fuel.storage Random.#.<.0.9.[0,.1]

Fuel.assemblies.removal.from.core Random.#.<.0.7.[0,.1]

Material.facilities.removal Random.#.<.0.5.[0,.1]

Fuel.rod.removal.from.spent.fuel.pool Random.#.<.0.3.[0,.1]

Fuel.rod.removal.from.consignment Random.#.<.0.1.[0,.1]

Figure 11.9.shows.the.safeguard.aspect.of.modeling,. which.has.four.fac-
tors:.safeguard.monitoring,.structure.stability,.carrying.accidents,.and.opera-
tor.errors..Safeguard.monitoring.is.quantiied.using.the.safeguard.measures.
factor.(SMF).in.this.study..Each.factor.is.quantiied.as.a.Monte.Carlo.simula-
tion.of.random.sampling.(Table 11.7)..The.random.number.is.generated.as.a.
uniform.value.between.0.and.1..In.case.of.fuel.rod.removal.from.new.fuel.
storage,.when.the.random.value.is.lower.than.0.5,.the.value.is.0;.when.the.
random. value. is. higher. than. 0.5,. the. value. is. 1.. In. safeguards. monitoring,.
fuel.monitoring.is.simulated.as.in.Figures 11.2,.11.3,.and.11.4..Each.factor.in.
Figure 11.3.is.quantiied.as.a.Monte.Carlo.simulation.of.random.sampling..
That.is,.the.random.number.is.quantiied.as.seen.in.Table 11.7..The.multipli-
cation.of.all.elements.is.done.using.the.concealment.method..This.value.is.
used.as.the.safeguard.measures.factor.(SMF).in.Table 11.5..Other.cases.are.
handled.in.a.similar.manner..For.structure.stability,.when.the.random.value.
is.lower.than.0.5,.the.value.is.0;.when.the.random.value.is.higher.than.0.5,.
the.value.is.1..For.structure.stability,.carrying.accidents,.and.operator.errors,.
safe. operation. is. affected. by. reactor. building,. fuel. carrying. accidents,. and.
human.errors,.respectively..The.random.number.is.generated.by.subtracting.
the. nonsecure. random. number. from. the. secure. random. number,. which. is.
the.summation.or.subtraction.in.the.zero-sum.method.of.game.theory.or.the.
network.effect..The.new.random.number.is.called.a.random.#.factor.

11.4 Results
Figure 11.10. summarizes. the. connections. among. the. various. factors..
Figure 11.11. includes. four. graphs. of. the. simulation. results,. which. were.
created. in. the. Vensim. code. system.. Figure 11.11(a). shows. quantiication. of.
neutronics.matters,.where.4.0.is.the.most.secure.value..Figure 11.11(b).is.the.
quantiication.of.thermohydraulic.matters,.where.5.0.is.the.most.secure.value..
Quantiication.of.safeguard.matters.is.shown.in.Figure 11.11(c),.where.4.0.is.
the.most.secure.value..Figure 11.11(d).shows.secure.power.operation.where.
the. value. is. shown. as. an. oscillation.. The. risk. for. secure. power. operation.