Reliable-Non-Destructive-Testing-of-99-purity-metals-via-multiple-complementary-testing-procedures-AR25.pdf

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1、Non-Destructive Testingof.99 purity metals via multiple complementary testing proceduresThe Safe House-visit us at www.thesafehouse.sg2About The Safe HouseResponsible for:Vault Operations Bullion Testing In The Reserve FacilityWe Operate:15 UL Class 2 Gold Vaults10,000 ton Silver Vault Currently sto

2、ring 1.2 Billion USD worth of metals,representing 4%of vaulting capacity but growing around 25%p.a.The Reserve in SingaporeThe Safe House-visit us at www.thesafehouse.sg3Our Testing Requirements 99.5%Gold and Silver is stored on a guaranteed(not said to contain)basis.Our bullion guarantee requires t

3、esting methodologies that are:ReliablePracticalNon-destructive We take the risk on behalf of the client,certainties are required.The Safe House-visit us at www.thesafehouse.sg4About DUX Testing Our first testing and tracking methodology“DUX”began in 2012.DUX is an acronym for:DensityUltrasoundX-Ray

4、SpectrographyOver the years we added:Electrical Conductivity Measurement(ECM)Magnetic Susceptibility Measurement(MSM)The Safe House-visit us at www.thesafehouse.sg5The Testing Principle We test at least 3 separate physical characteristics,or 2 plus X-rayMetalDensity(g/cm3)Speed of Sound(m/s)Electric

5、al Conductivity(mS/m)Magnetic Susceptibility(M)Gold19.303,24044.7-2.8Tungsten19.255,22018.526.8Silver10.493,65061.35-2.6Lead11.342,1605-1.8Copper8.944,76059.1-1The Safe House-visit us at www.thesafehouse.sg6Celerity Testing via Ultrasound Advantages Penetrates deep into samplesDetects internal voids

6、 and anomalous insertsDisadvantages May require advanced expertise(e.g.different frequencies depending on bar types)Requires continuous physical contact with sample(alleviated by submerging the sample in water)Cannot be used if the sample is internally porousMetal PropertiesDensi