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BS ISO 23152:2021

BS ISO 23152:2021

$142.49

Ships and marine technology. Ballast water management systems (BWMS). Computational physical modelling and calculations on scaling of UV reactors

Published By Publication Date Number of Pages
BSI 2021 28
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This document specifies the methodology to conduct computational modelling of ultraviolet (UV) reactor designs for ballast water management systems (BWMS) that incorporate ultraviolet disinfection technology (UVBWMS). The computational modelling is used to calculate the UV reduction equivalent dose (RED) and to compare calculated REDs of the scaled reactor to its base reactor. REDs are determined using organisms with a given dose response.

NOTE

The IMO requires validation of the computational model.

The simulation of a physical UV reactor using a computational model requires that the model be validated (i.e. it performs as intended and reflects the correct physical constraints) and verified (i.e. produces outputs consistent with empirical data). A model developed according to this document is intended to validate the performance of simulated but untested, scaled UV reactors, where the simulation has been verified with test data from base model UV reactors within the product line. As a complete UV BWMS typically incorporates other treatment methodologies such as filters, the impact of changes to external subsystem performance on the overall BWMS is not considered in this document.

PDF Catalog

PDF Pages PDF Title
2 National foreword
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
14 4 General requirements
4.1 General principle
4.2 Modelling best practices
5 Modelling and calculations
5.1 General
15 5.2 Geometric model
5.3 Turbulence model
5.4 Radiation model
16 5.5 Calculation of the UV dose
5.5.1 General
5.5.2 Lagrangian particle tracking
5.5.3 Eulerian reacting tracer
5.6 Scaling procedure
5.6.1 Main steps
20 6 Scaling metrics
6.1 General principles
21 Annex A (informative) RED calculation
24 Annex B (normative) Verification of model using empirical data
26 Bibliography

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BS ISO 23152:2021
$142.49