GB/T 45486-2025 Active National standards

GB/T 45486-2025 Ships and marine technology—Ballast water management systems (BWMS)—Computational physical modelling and calculations on scaling of UV reactors

Publish Date: 2025-03-28 Implement Date: 2025-10-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 45486-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: \nCabin auxiliary equipment

ICS Name: Other standards related to shipbuilding and marine structures

Publish Date: 2025-03-28

Implement Date: 2025-10-01

Pages: 24 pages

Scope

This document specifies the method for calculating and modeling the ultraviolet (UV) reactors designed for ultraviolet ballast water management systems (UVBWMS). The calculation and modeling are used to calculate the ultraviolet equivalent reduction dose (RED) and compare the calculated RED of the scaled-down reactor with that of the basic reactor. The RED is determined using the dose response of a given microorganism. Note: The International Maritime Organization (IMO) requires verification of the calculation model. To simulate physical UV reactors using the calculation model, it is necessary to confirm the model (i.e., the model operates as expected and reflects the correct physical constraints) and validate it (i.e., the output results are consistent with empirical data). The model developed according to this document is intended to verify the performance of scaled-down UV reactors that have not been tested, where the simulation has been validated based on test data from the basic model UV reactors within the product line. Since a complete UVBWMS typically includes other processing devices, such as filters, this document does not consider the impact of changes in the performance of external subsystems on the overall BWMS.