描述
BWMS VGP CALIBRATION
SENSORS / PROBES ANNUAL CALIBRATION
描述
From the requirement of US Vessel General Permit as described in 2.2.3.5.1.1.3, all applicable sensors and other equipment must be calibrated annually at the minimum. Additionally, all applicable sensors and other control equipment must be calibrated no less frequently than recommended by the sensor or other equipment manufacturer, or by the ballast water treatment system manufacturer or when warranted based on device drift from a standard or calibrated setting. Calibration of the sensors and equipment can be conducted on-board the vessel or they can be removed and shipped to the manufacturer or other vendor for calibration. 
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  • Regulatory Compliance
    One of the main reasons for annual calibration is to ensure compliance with international and regional regulations. Various authorities, like the IMO and United States Coast Guard (USCG), impose stringent standards for the discharge of ballast water to prevent the spread of invasive species.
  • Environmental Protection
    Ballast water can transfer invasive species, damaging the biodiversity of new ecosystems. Regular BWTS calibration and service contribute to the effectiveness of the system, reducing the risk of introducing harmful organisms
  • Operational Efficiency
    Regular BWTS calibration ensures that the system functions optimally and efficiently. This can lead to time and cost savings.
  • Vessel Safety
    The correct operation of BWTS is essential for the overall safety given its role in maintaining the vessel’s stability. Proper calibration ensures that the system is operational, contributing to safe sailing.
  • Reliability
    Annual calibration is part of a proactive maintenance strategy for BWTS. It contributes to identifying and managing any issues before they become major problems. Therefore, vessel operators can extend the lifespan of their BWTS and avoid costly breakdowns or replacements.
The purpose of BWTS Calibration is to ensure that all sensors and transmitters are communicating the correct values to the control system to ensure full system functionality true to its type approval by calibration or replacement. Service should evaluate performance during full system operation in both uptake and discharge modes. 
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Treatment Efficacy Verification

The objective of BWTS calibration is to validate that the harmful organisms present in ballast water are effectively treated. This is usually performed through the measurement of the system’s disinfection efficiency and the reduction in the concentration of target organisms.

Instrumentation Inspection

The instruments and sensors used in the BWTS are also verified and calibrated. Among them are flow meters, pressure sensors, turbidity sensors, UV intensity sensors, and other monitoring devices. Calibrating these instruments ensures accurate readings.

Chemical Dosing Verification

In the cases when the BWTS use chemicals to treat the ballast water, the calibration verifies the accuracy of chemical dosing pumps and the mixing.

Regulatory Compliance

BWTS calibration must be conducted according to the rules and regulations established by organizations like the International Maritime Organization (IMO). These regulations mention the standards for ballast water treatment and calibration procedures.

System Settings and Parameters

The calibration services can also integrate adjusting the BWTS settings and parameters to optimize the performance.

Certification and Documentation

Once calibration is completed and verified, the system is certified as compliant with regulatory standards.