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Polatrak ROV-II Operation Manual

Cp probe
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ROV-II™
CP PROBE
OPERATION MANUAL
Twin reference
electrodes for
online calibration
Can be used with
ROVs or as a
diver-held probe
www.polatrak.com
|
©2023 Deepwater Corrosion Services Inc. Specifications subject to change without notice
CORROSION TESTING PROBE
Works as either
a contact or
proximity probe
Deepwater Corrosion Services Inc.
+1 (713) 983 7117 | Email: sales@stoprust.com

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Summary of Contents for Polatrak ROV-II

  • Page 1 CORROSION TESTING PROBE ROV-II™ CP PROBE OPERATION MANUAL Twin reference Can be used with Works as either electrodes for ROVs or as a a contact or online calibration diver-held probe proximity probe Deepwater Corrosion Services Inc. +1 (713) 983 7117 | Email: sales@stoprust.com www.polatrak.com...
  • Page 2 Figure 3 Identifying a failed reference electrode Figure 4 Calibration vs. zinc coupon Figure 5 Calibration cell to cell www.polatrak.com 13813 FM 529 Rd, Houston, TX 77041 | US +1 (713) 983 7117 | Email: sales@stoprust.com SMB-009 ROV-II Manual Rev. 2 ©2023 Deepwater Corrosion Services Inc.
  • Page 3 Table 1 Normal cathodic protection ranges for bare carbon steel in seawater Table 2 Troubleshooting quick guide www.polatrak.com 13813 FM 529 Rd, Houston, TX 77041 | US +1 (713) 983 7117 | Email: sales@stoprust.com SMB-009 ROV-II Manual Rev. 2 ©2023 Deepwater Corrosion Services Inc.
  • Page 4 Serial number Reference electrode element R1 (short) MLT0045 Tail assembly ROV0011 Hex screws www.polatrak.com 13813 FM 529 Rd, Houston, TX 77041 | US +1 (713) 983 7117 | Email: sales@stoprust.com SMB-009 ROV-II Manual Rev. 2 ©2023 Deepwater Corrosion Services Inc.
  • Page 5 (4) readings without utilizing conductor armored spiral comms the ROV’s umbilical. www.polatrak.com 13813 FM 529 Rd, Houston, TX 77041 | US +1 (713) 983 7117 | Email: sales@stoprust.com SMB-009 ROV-II Manual Rev. 2 ©2023 Deepwater Corrosion Services Inc.
  • Page 6 ROV frame if there is no manipulator available. (This should be done when only proximity readings are required). www.polatrak.com 13813 FM 529 Rd, Houston, TX 77041 | US +1 (713) 983 7117 | Email: sales@stoprust.com SMB-009 ROV-II Manual Rev. 2 ©2023 Deepwater Corrosion Services Inc.
  • Page 7 4.2.5 Topside, the system can be wired directly to a pair of digital multimeters (Fig. 7) or a Polatrak Deep C Meter™ (Fig. 6). It can also be wired directly into a video annotator with an input impedance of at least 1.0 MΩ.
  • Page 8 5.1 General As with any subsea measurement device, it is important to cali- brate the ROV-II™ probe to ensure that the reference electrodes are working properly and that there is no damage to the probe. The probe comes calibrated from the factory. Calibration should be checked before and after each dive.
  • Page 9 • Immerse the zinc calibration coupon. Stab the probe tip firmly onto the zinc coupon. www.polatrak.com 13813 FM 529 Rd, Houston, TX 77041 | US +1 (713) 983 7117 | Email: sales@stoprust.com SMB-009 ROV-II Manual Rev. 2 ©2023 Deepwater Corrosion Services Inc.
  • Page 10 Pin socket 3: Reference electrode #2 (R2) 5.4 Subsea calibration The cell-to-cell value can be checked at any time while the ROV-II™ probe is deployed subsea. Subsea calibration should be performed with the entire cable immersed, as it will quickly www.polatrak.com 13813 FM 529 Rd, Houston, TX 77041 | US +1 (713) 983 7117 | Email: sales@stoprust.com...
  • Page 11 ROV-II™ MANUAL detect any cable damage. Diver surveys using the ROV-II™ probe should have two topside multimeters connected to the dive cable. ROV-assisted surveys should have the Polatrak® Deep C Meter™ alongside the probe to provide a subsea LED readout of the voltages.
  • Page 12 Signal errors caused by umbilical power cable interference could introduce reading errors. www.polatrak.com 13813 FM 529 Rd, Houston, TX 77041 | US +1 (713) 983 7117 | Email: sales@stoprust.com SMB-009 ROV-II Manual Rev. 2 ©2023 Deepwater Corrosion Services Inc.
  • Page 13 • The probe unit should be kept out of the mud, which will con- taminate the electrodes. www.polatrak.com 13813 FM 529 Rd, Houston, TX 77041 | US +1 (713) 983 7117 | Email: sales@stoprust.com SMB-009 ROV-II Manual Rev. 2 ©2023 Deepwater Corrosion Services Inc.
  • Page 14 Mg anode or energized ICCP around the component negative system) Abort & refer to troubleshooting section www.polatrak.com 13813 FM 529 Rd, Houston, TX 77041 | US +1 (713) 983 7117 | Email: sales@stoprust.com SMB-009 ROV-II Manual Rev. 2 ©2023 Deepwater Corrosion Services Inc.
  • Page 15 Please handle with care. 9.2 Reference electrode element replacement Spare plug-in electrode elements are available for the ROV-II probe. These elements will also work in the Polatrak® CP Gun™. If one element or more needs to be changed, follow this procedure: 9.2.1 Remove the probe from the ROV and un-mate the connector.
  • Page 16 (section 9.2). • There is damage to the tail assembly cable or umbilical cable. When recovering the ROV-II™ probe from the dive, any cable dam- age can be quickly located and repaired. Monitor the cell-to-cell value as the cable comes out of the water. If the problem is cable damage, the cell-to-cell value will revert to the acceptable range (10 mV or less) as soon as the damaged area of cable clears the water.
  • Page 17 LED readouts are blank Pressure housing is Replace batteries flooded Go to backup; return unit to Polatrak. 10.4 If a problem persists or is not listed, please call our hotline at (713) 983-7117 and ask for Polatrak ® technical support.
  • Page 18 Note: Clean the Zn coupon with a file or sandpaper before using. (Readings should be within 0.005V of each other) www.polatrak.com 13813 FM 529 Rd, Houston, TX 77041 | US +1 (713) 983 7117 | Email: sales@stoprust.com SMB-009 ROV-II Manual Rev. 2 ©2023 Deepwater Corrosion Services Inc.
  • Page 19 Expected result Pin 3 Reference electrode 1 / Pin 2 200 mV ±5.0 mV www.polatrak.com 13813 FM 529 Rd, Houston, TX 77041 | US +1 (713) 983 7117 | Email: sales@stoprust.com SMB-009 ROV-II Manual Rev. 2 ©2023 Deepwater Corrosion Services Inc.
  • Page 20 ROV-II™ WIRING SCHEMATIC Steel structure Survey voltmeter display at 2 Volts DC setting www.polatrak.com 13813 FM 529 Rd, Houston, TX 77041 | US +1 (713) 983 7117 | Email: sales@stoprust.com SMB-009 ROV-II Manual Rev. 2 ©2022 Deepwater Corrosion Services Inc.