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Measurement Uncertainty

Measurement Uncertainty Values for Chemical Analysis

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Site	Accreditation	C	Mn	Si	S	P	Cu	V	Cr	Ni
InfraBuild Steel – Laverton Steel Mill	1726	0.014	0.020	0.008	0.004	0.001	0.010	0.001	0.006	0.005
InfraBuild Steel – Sydney Steel Mill	2482	0.012	0.017	0.009	0.003	0.002	0.006	0.001	0.003	0.003
Bureau Veritas Minerals – Whyalla	794	0.006	0.008	0.006	0.001	0.001	0.001	0.002	0.060	0.002

Site	Accreditation	Sn	Mo	Al	Nb	Ti	B	N	Ca	Ceq
InfraBuild Steel – Laverton Steel Mill	1726	0.001	0.001	0.002	0.001	0.0002	0.0005			0.015
InfraBuild Steel – Sydney Steel Mill	2482	0.001	0.001	0.001	0.001	0.0004	0.0001	0.003
Bureau Veritas Minerals – Whyalla	794	0.001	0.004	0.058	0.001	0.0010	0.0001	0.005	0.0003

InfraBuild Steel – Laverton Steel Mill and InfraBuild Steel – Sydney Steel Mill measure uncertainty as an ‘expanded uncertainty’ including uncertainty from sampling in the calculations. The expanded uncertainty has a coverage factor, K of 1.96.

Revision: November 2019

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