SOR_18-007_SOW_Siemens_VSD_Commissioning_rev1_IAD.docx

USNS TRENTON (T-EPF 5)

INSPECT / COMMISSION FIREPUMP MOTOR VARIABLE SPEED DRIVES (VSD)

1.0 ABSTRACT:

1.1 This item describes the requirement to provide a Siemens-Norway, Siemens Marine Division, certified G150 technician, OEM Representative to inspect, replace power cable from VSD to motor, replace grounding system cabling and commission all VSDs.

2.0 REFERENCES:

2.1 MSC General Technical Requirements

2.2 ROH parent Work Item No. 0302

3.0 ITEM LOCATION / DESCRIPTION

3.1 Location/Quantity: Pump Rooms 1 and 2, and Main Engine Rooms 1 and 2

3.2 Item Description: SIEMENS G150 Variable Speed Drive

4.0 GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICES: None.

5.0 NOTES:

5.1 The contractor must consult the General Technical Requirements (GTR) to determine applicability to this work item. In performance of this work item, the contractor and all subcontractors regardless of tier must comply with the requirements of all applicable GTR’s including but not limited to GTR’s 1 through 7, 22, 23, 26, 28 and 29.

5.2 Performance Location: Viktor Lenac Shipyard; Rijeka, Croatia

5.3 Performance Period: 12-13 February, and 12 – 21 March 2018 (2 visits)

5.4 Port Engineer: Wayne Lefebvre; Cell# (757) 274-8389; wayne.lefebvre@navy.mil

6.0 QUALITY ASSURANCE REQUIREMENTS:

6.1 All work shall be performed in accordance with ABS regulations.

7.0 STATEMENT OF WORK:

7.1 Energization, de-energization, and lock-out tag-out requirements of any shipboard equipment shall be coordinated through the Chief Engineer.

7.2 Contractor shall provide the services of Siemens G150 OEM technical representative from the Marine Division to perform the following to Fire Pumps #1, 2, 3 and 4 and respective VSDs:

7.2.1 Oversee the removal of old power cable and installation of new high frequency power cable and grounding. Accomplish to OEM and MSC standards.

7.2.2 Terminate/oversee high frequency power cable and grounding on VSD controller to the Fire Pump motor.

7.2.3 Ensure internal power cable grounds and shield are properly lugged and terminated.

7.2.4 Ensure VSD internal grounding bar is present and tightened.

7.2.5 Ensure grounding from VSD to hull is adequate and properly torqued. Replace/oversee replacement of grounding conductor if not the same as other grounding conductors.

7.2.6 Install grounding cable from/to the following components:

7.2.6.1 VSD to fire pump motor

7.2.6.2 Fire pump motor to hull

7.2.6.3 Fire pump motor to fire pump

7.2.6.4 Fire pump to hull

7.2.6.5 All ground cabling shall be the same type and size, as authorizied by MSC, with the exception of the grounding cable from the Engine Room VSDs to fire pump motors may utilize one of the existing power cables, if the exising cable is found to be adequate and in good condition, with proper reconnections.

7.2.7 Check all VSD communication connectors for corrosion and tightness. Replace/tighten as necessary.

7.2.8 Clean each VSD controller internally.

7.2.9 Install VSD cabinet filter assemblies with OEM Siemens parts.

7.2.10 Ensure all VSD cable entries have been made correctly via air tight conduit.

7.2.11 Ensure all VSD inernal heaters have been connected toa powe source and are fuly functional and tested.

7.2.12 Perform commissioning procedure with all related software checks on all VSD controllers, and perform operational testing. Check all parameters and trends.

7.2.13 Verify all pertinent readings from VSD, independent multi-meter, and Bridge IMCS.

7.3 Perform shaft current ground measurement of all four (4) Fire Pumps during operation prior to VSD work and after completion of re-wire and grounding.

7.4 Provide clamp-on ground resistance meter, AEMC 6416 or similar and measure as found resistance with each fire pump running.

7.5 Remove ground wire from motor and deck, thoroughly clean all connection areas. Reinstall and repeat above test (7.4).

7.6 Perform shaft current test with Fluke 190-062 scope meter and record readings prior to (7.4) and after (7.5).

7.7 Measure insulation resistance of motor, THD-filter and main circuit breaker power cables. Measure state of the capacitors. Do a power quality analyze with test instrument.

7.8 Measurements to verify functionality of new HF grounding from:

7.8.1 VSD bus bar to ship hull and to motor ground point

7.8.2 Motor junction box to motor ground point

7.8.3 Motor ground point ship hall

7.8.4 Pump housing to motor ground point

7.8.5 Testing ground potential

7.9 Perform an overall general inspection of all fire pump electrical components, VSDs, filters, and associated connections, wiring and lugs.

7.10 Prior to final departure from vessel, provide a preliminary Service Report indicating deficiencies corrected, outstanding deficiencies, and any recommendations.

7.11 Within 5 days after final departure from vessel, provide an official Service Report indicating all work performed, test results and data, outstanding deficiencies, and any additional recommendations.

8.0 ADDITIONAL REQUIREMENTS:

8.1 The shipyard will provide three (3) competent marine electricians to assist the Siemens Representative daily, up to ten (10) hours per day, or as requested by Siemens.