PTO CONTROL SYSTEM MALFUNCTION - CASREP 20-001- SOW.doc

USNS PATUXENT

T-AO 201

ELECTRICAL

N32205-20-X-XXXX

03 FEB 2020

ITEM NO.: CASREP 20001

CATEGORY “A”

MSFSC/BJD

PTO SYSTEM MALFUNCTION – CASREP 20-001

1.0

ABSTRACT:

1.1 Provide services of a Qualified Technical Field Service Representative to conduct system troubleshooting, repairs and testing of the port Power Take Off (PTO) generator, cabinet and control system.

2.0

REFERENCES/ENCLOSURES:

2.1 NAVSEA Tech Manual T9311-A9-MMC-020, "PTO Generator" (Available onboard, Ships Index; 304, 305, 306, 307, 308).

3.0

ITEM LOCATION/DESCRIPTION:

3.1 Description:

3.1.1 One (1) Power Take Off Generator Set, (3-91-2).

3.1.1.1 Siemens Energy and Automation; 2500 kw; 60Hz; 450 Volts.

3.1.1.2 Port PTO or No.2 PTO Generator Control

PTO Generator Machine: Model No: 1FJ6 716-6SA90-Z: Rated 3020 KVA: Rated Speed 1200RPM;

3.2 Quantity:

3.2.1 One (1) Power Take Off Generator Sets include the following:

3.2.1.1 PTO Generator Control Circuitry (1 Ea. PTO Generator).

3.2.1.2 One (1) PTO Generator equipment.

3.2.1.3 One (1) PTO Group Control Centers.

3.2.1.4 Auxiliary Apparatus Cabinet.

3.2.1.5 Network Bridge.

3.2.1.6 Machine Bridge.

3.2.1.7 Static Frequency Converter.

4.0 GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICES: None.

5.0

NOTES:

5.1 The contractor and all subcontractors, regardless of tier 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, 24, 28 and 29.

5.2 CASREP No. 20001; C2 (if one more Generator goes down will be C4) 5.3 Performance Location: Pier 8, Norfolk Naval Base, Norfolk VA

Ship will be available from: 20 -24 February 2020.

6.0

QUALITY ASSURANCE REQUIREMENTS:

6.1 All work is to be conducted to the satisfaction of Port Engineer and Chief Engineer.

7.0

STATEMENT OF WORK REQUIRED:

7.1 Provide the services of a Qualified Technical Field Service Representative to troubleshoot, repair and test the port and stbd PTO cabinets and control systems aboard the USNS PATUXENT.

7.1.1 For estimating purposes contractor shall provide the Technical Field Service Representative onsite for a period of five (5) ten (10) hour days.

7.1.2 Background Information: While steaming along on both PTOs a cargo pump was started. The cargo pump had issues and a current load of about 3,000 amps was put on the PTOs all at once. This was more than the PTOs could handle and they dumped the load. Both units had malfunctions but only No.1 would reset.

Through remote troubleshooting with technical representative the ship’s force has been able to correct a number of the issues.

Control cabinet abinet still has a warning 053, it is 30205 inverter. Ship’s force checked the AOP and got the H30205 PU: zero curr sig miss alarm value of r2124. With tech rep guidance ship’s force performed recommended steps and an alarm value of 21 was received? Help button was used and it read index 0 value 21 and all the other index read 0? There was no 4digit code to interpret?

At this point the Ship’s Force is in need of onsite Technical Representative support.

7.2 Manufacturer’s Technical Representative shall provide required special tools, testing equipment, and parts required necessary to effect troubleshooting and repairs.

7.2.1 At a minimum Contractor shall provide the following parts(known to be required and not available in the stock system;

7.2.1.1 P/N: 6SL3955-6HC01-0AA0 // DC/DC converter P324.1 24V/24V // Qty 4.

7.2.1.2 P/N: 6SL3995-6LX00-0AA0 // AVT combination for SINAMICS Medium-voltage converters // QTY 2.

7.3 Perform operational test upon completion of repairs.

7.4 Known Qualified Technical Field Service Representatives:

Ryno Enterprises

POC: Bernd Reuter

Long Beach California

Tel 310-594-9111

Fax 310-594-5978

Email: bernd.reuter@rynoenterprises.us Siemens Marine

POC: Sven Fritzsche

Tel: 954-527-0431

Cell: 954-778-9097

Email: fritzsche.sven@siemens.com

7.2 Contractor shall submit a condition report identifying any issues with recommended repairs during the inspection and testing of the PTO Cabinets and Control Systems. Recommended repairs shall be evaluated by the MSC Representative and addressed by a Contract Change Order if deemed appropriate/necessary.

7.3 Upon completion of all work a technical field service trip report is to be submitted to the Port Engineer documenting action taken and recommendations for future repairs/modifications.

8.0

GENERAL REQUIREMENTS:

8.1 All work shall be accomplished to the satisfaction of the MSCREP.

CASREP 20001-3