Skeppbyggnadteknik och marina konstruktioner

Kommittébeteckning: SIS/TK 477 (Skeppsteknik och Marin Teknologi)
Källa: ISO
Svarsdatum: den 1 nov 2022
Se merSe mindre

This document specifies methods to evaluate the performance of a specific class of analytical instruments—known as Compliance Monitoring Devices (CMDs). CMDs are designed and intended to examine ballast water to determine whether a sample meets or exceeds limits for the concentration of
living or viable organisms, such as those limits specified by the International Maritime Organization (IMO) D-2 Discharge Standard (DS)[1] or another DS adopted by national or regional authorities. For the performance metrics trueness and precision, test methods evaluate the agreement between the
CMD and a reference method. Both trueness and precision consider only simple, categorical outcomes (e.g., “meets” or “exceeds” the DS). The performance metric reliability is quantified by the frequency of
instances when the CMD is not available or is not operating as expected.
The set of tests and trials is based upon the CMD manufacturer claims—such as the DS group(s) targeted by the CMD—and known limitations, including those based upon the salinity of the sample water.
NOTE Additional tests and trials, if required by the end-user, may follow this general test method. Guidance on determining experimental power is in the body of this text (7.5), and additional, optional factors for
consideration are included as an informative Annex.
The standard does not set or recommend success criteria of any performance metric, as these are appropriately defined by the end-users. This document provides guidance for customizing the tests and
trials necessary to evaluate the claims of the manufacturer or to address particular factors of interest to the end-users.