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Neuver Maritime AS

SG CS Performance Monitoring System

Radar Level Gauge · Cargo Level & Temperature Gauging

Class-certified type (DNV register) · technical data sheet not yet verified​​⁠‌‌⁠‌‌⁠⁠​​‌‍​‍⁠‌‍⁠

SG CS Performance Monitoring System by Neuver Maritime AS. DNV TA certificate TAA00003S1.

Inspection

Inspector Detail

Common issues

  • Radar signal loss or erratic readings from foam, turbulence, or vapor condensation on the antenna
  • Antenna or still-pipe fouling from cargo residue or wax buildup affecting accuracy
  • Communication link failure between the tank unit and the cargo control room display
  • Calibration drift over time versus manual dip/ullage readings
  • Power supply or intrinsically-safe barrier fault causing loss of reading
  • Water ingress into the tank-top junction box affecting signal integrity

Inspection checklist

  • Cross-check radar reading against manual ullage/dip measurement
  • Inspect antenna horn/still-pipe for residue buildup or damage where accessible
  • Verify junction box and cable gland sealing at the tank top
  • Check intrinsically-safe barrier and power supply status
  • Confirm high-level and high-high alarm setpoints against the cargo plan
  • Review historical trend data for drift or erratic behaviour
  • Test the communication link to the cargo control room / IAS
  • Verify still-pipe venting, where fitted, is not obstructed

Service intervals

Cross-check against manual gaugingeach cargo operation, minimum monthly
Calibration verificationannually or per maker recommendation
Antenna/still-pipe cleaning inspectionat dry-docking or when accuracy drift is noted
High-level alarm function testbefore each cargo loading, per ISGOTT/SOLAS practice

Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.

Typical wear limits

Level reading accuracy vs. manual dipcommonly within about 2-5 mm depending on system class - confirm against the maker's stated accuracy and the cargo's custody transfer requirement

Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.

Critical spares

  • Antenna/radar sensor unit of matching type
  • Junction box seal and cable gland set
  • Intrinsically-safe barrier module
  • Display/interface unit fuses
  • Communication cable

Safety

  • False level readings can lead to tank overfill - a major fire/explosion and pollution hazard
  • Work on tank-top electrical connections requires intrinsically-safe procedures and gas-free verification
  • High-level alarm bypass or failure removes a critical overfill safeguard - never disable without compensating measures
  • Static discharge risk when opening tank fittings on tanks carrying flammable cargo

Class survey

Class and cargo surveys typically check that the high-level alarm is independently tested from the primary gauging system, that calibration records exist, and that the installation matches the tank's approved custody-transfer/overfill protection arrangement.

Estimated lifetime: Radar level gauge electronics typically remain in service 15-20 years with sensor/antenna replacement as needed; not rated in running hours

Classification

DNV type approval

Listed in the DNV Approval Finder at the time we recorded it. The certificate is issued by DNV, not by us; check its current status at DNV.

CertificateTAA00003S1
Open the certificate at DNV
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