SO-13-005-Arc_Flash_Analysis_SOW 1 .doc

USNS CARL BRASHEAR

(T-AKE 7)

ELECTRICAL

Service Order#: SO-13-005

26 September 2012

SO-13-005

Category “A”

MSFSC/N43C/ALC

ARC FLASH ANALYSIS

1.0 ABSTRACT

1.1 This item describes the requirement to accomplish an arc flash hazard analysis.

2.0 REFERENCES/ENCLOSURES

2.1 References

2.1.1 Arc Flash Hazard Analysis, Revision 2, dated April 10, 2008,Square D project number Q2C#23730398-002.

3.0 ITEM LOCATION/QUANTITY/DESCRIPTION

3.1 Location: USNS CARL BRASHEAR

Guam Shipyard

Santa Rita, Guam (location subject to change)

3.2 Quantity: N/A

3.3 Description: N/A

4.0 GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICES

4.1 Government Furnished Equipment (GFE): None

4.2 Government Furnished Material (GFM): None

4.3 Government Furnished Services (GFS): None

5.0 NOTES

5.1 Fax/Email Ship Access Requests on company letterhead to the Principal Port Engineer, Andrea Carey. Fax: (757) 443-1487, Email: Andrea.L.Carey@navy.mil, Phone: (757) 443-0880.

5.2 Access Requests shall contain the following information:

5.2.1 US Citizen Contractors: Full Name; Last 4 SSN; Ship Attending; Reason for Visit; Dates requiring access.

5.2.2 Non-US Citizen Contractors: Full Name; Date of Birth; Nationality; SSN/Passport No./ARC No.; Ship Attending; Reason for Visit; Dates requiring access.

5.3 Period of Performance is 26 October to 23 November 2012. Location is Santa Rita, Guam (location is subject to change).

5.4 Email Base Access Requests to Norma Pilman at the SSU Guam Office. Email: Norma.Pilman@fe.navy.mil, Phone (671) 339-5341.

5.5 Access Requests shall contain the following information:

5.5.1 US Citizen Contractors: Full Name; Last 4 SSN; Ship Attending; Reason for Visit; Dates requiring access.

5.5.2 Non-US Citizen Contractors: Full Name; Date of Birth; Nationality; SSN/Passport No./ARC No.; Ship Attending; Reason for Visit; Dates requiring access.

5.6 This ship contains High Voltage (HV) electrical systems. The Contractor and all Subcontractors shall obey all posted and verbal instructions regarding safety and exclusion from High Voltage areas. At no time shall a Contractor or Subcontractor approach, work on, or enter a High Voltage area without proper authorization.

5.7 THE USNS CARL BRASHEAR ELECTRICAL COLOR CODING DOES NOT FOLLOW CONSISTENT COLOR SCHEME. THE SHIP IS KNOWN TO HAVE CURRENT CARRYING CONDUCTORS COLORED GREEN, BLUE, BLACK, AND WHITE. THE CONTRACTOR SHALL ASSUME ALL ELECTRICAL CABLES ARE HOT UNTIL TESTED OTHERWISE. THE CONTRACTOR SHALL TEST ALL ELECTRICAL CABLES TO ENSURE THEY ARE DEAD PRIOR TO WORKING ON THE ITEM.

5.8 All shipboard lockout/tag out procedures shall be followed by the Contractor and all Subcontractors.

5.9 Contractor shall be responsible for all industrial support outside the normal scope of Ship’s Force assistance. Any industrial support required beyond the ship’s force capability shall be the responsibility of the Contractor.

6.0 QUALITY ASSURANCE REQUIREMENT: None Additional

7.0 STATEMENT OF WORK

7.1 Using Reference 2.1 and associated software model, accomplish an Arc Flash Hazard Analysis (AFHA) to determine the Arc Flash Protection Boundary (AFPB) and the Personal Protective Equipment (PPE) required for personnel performing maintenance on electrical equipment and systems.

7.1.1 The scope of the AFHA will be limited to the following equipment:

· Diesel Generators 1 thru 4

· Main Switchboards 1 & 2

· Propulsion Filters 1 & 2

· Propulsion Transformers 1A, 1B, 2A, & 2B

· Propulsion Syncroconverters 1A, 1B, 2A, & 2B

· Bow Thruster Transformer

· Bow Thruster Controller

· Ship’s Service Transformers 1 & 2

· Ship’s Service Switchboards 1 & 2

· Emergency Switchboard

· Shore Power Setup Panels 1 & 2

· Load Center Transformers 1 thru 12

· Load Centers 1 thru 12

7.2 Perform a ship check (site visit) to collect and validate all information required for the AFHA, Electrical One-Line Diagram, Electric Power Load Analysis, Fault Current Analysis, and Protective Device Coordination Study. This information includes, but is not limited to:

· Generator, motor, and transformer types and ratings

· Overcurrent protective device types and settings

· Cable sizes and lengths

· Switchgear and panel board types and ratings

NOTE

INDUSTRIAL ACTIVITY MAY BE IN PROGRESS ONBOARD SHIP DURING SHIPCHECK. CONTRACTOR WILL BE RESPONSIBLE FOR PROVIDING THEIR OWN PPE INCLUDING, BUT NOT LIMITED TO, STEEL-TOED SAFETY SHOES, SAFETY GLASSES, FR CLOTHING, AND HEARING PROTECTION.

7.3 Coordinate with the ship’s crew to gain access to required spaces and equipment.

7.4 Temporarily remove and reinstall equipment covers as required to gather data.

NOTE

EFFORT IS TO BE MADE TO GATHER DATA WITH A MINIMUM OF POWER OUTAGES.

7.5 Provide redline of the Electrical One-Line Diagram, including validation of data on existing drawing and capturing changes and additions to electrical system. The redline of the One-Line Diagram shall include, but not be limited to, the following items:

· Type and size of all generators including motor-generators and power conversion equipment.

· Type and size of all generator cable, bus-tie cables, power and lighting feeder and branch circuit cables.

· Power, lighting, IC and electronics distribution panels showing number of circuits and rating in KW or HP of all energy consuming devices such as motors, heaters, galley and laundry equipment, lighting circuits, electronic and navigation equipment.

· Type and capacity of all transformers.

· Type and capacity of all storage batteries and associated chargers.

· Rating of all circuit breakers and switches indicating interrupting capacity, frame and trip size and fuse size.

· Locations, types, and sizes of all transformers, generators, motor-generators, motors, controllers, ventilation fans, switchboards, group control centers, solid state rectifiers and inverters, distribution panels, batteries, galley and laundry equipment, etc., shall be indicated.

· All circuit breakers, contactors and relays equipped with shunt or under-voltage trip features or other remote control devices shall be indicated.

· Identify all power, lighting and IC, circuits as to number or symbol.

· Cable, circuit breakers, switch and fuse sizes, and phasing for single phase loads shall be indicated at each circuit.

· Circuit resultant load current.

· Bus ratings of all switchboards and panels

7.6 Update Fault Current Analysis (FCA). Validate the existing FCA for accuracy and update the data to reflect current vessel configuration. Submit a single line diagram denoting every fault point that has been calculated. All previous fault points from provided FCA are to be included. Provide the same level of detail provided in the previous FCA.

7.6.1 Devices with actual values (impedance, X/R ratio, time constants, breaker curves, etc) are to be created in the software libraries including but not limited to the following equipment:

· Generators

· Cables

· Transformers

· Motors and other loads

7.7 Produce a FCA report. The FCA report is to:

· State the calculation method used

· Identify all cases

· Show Single Line Diagrams at every level

· Show Base kVA, base voltage, base current and base impedance

· Show Generator voltages, kVA ratings, resistances and reactances

· Show (Xd, X'd and X"d)

· Show transformer %Z (percent impedance), x/r ratio, KVA ratings,

· Show voltage ratings and connection types (e.g. Delta-Wye)

· Show Cable lengths for each circuit

· Show Cable resistance and reactance's for each circuit

· Show Motor contributions (with kVA and voltage)

· List assumptions used in the calculations

· Calculate maximum and minimum Faults

7.8 Perform a Protective Device Coordination Study. The Protective Device Coordination Study is to be prepared concurrently with the fault current analysis to validate circuit protective device settings and characteristics. Provide a copy of the previous Coordination studies. Validate the data in the provided studies prior to using it to create the new Coordination Study. Provide the same level of detail as provided in the previous study. Furnish time/current curves for each protective device. All current protection devices shall be shown in the Coordination Study.

7.9 Perform an Arc Flash Analysis (AFA) in accordance with NFPA 70E and IEEE 1584. The Analysis must be performed utilizing information from the Fault Current Analysis and the Protective Device Coordination Study above. The AFA shall identify each location and must specify the Arc Flash Protection Boundary, Incident Energy Level at specified working distance expressed in cal/cm2, Arc flash Hazard Risk Category (HRC), Voltage, Limited Restricted and Prohibited Approach Distances, Glove Class and PPE required.

7.10 Upon completion of 7.5, 7.6, 7.7, 7.8, and 7.9 compile a report of findings including recommendations of changes that could mitigate safety issues. Provide five color hard copies and five soft copies on CD of above report and all products. Provide all software models and associated files and these will become Government Property for archival in the MSC Technical Library to support future analysis upon ship alterations.

7.11 Produce equipment labels that meet the requirements of ANSI Z535. Contractor shall use own mobile computer and printer to allow completion of AFHA and installation of labels during the shipcheck trip to avoid cost of repeat trips. Labels will contain at a minimum the following information regarding arc flash and shock hazard:

· Arc Flash Protection Boundary

· Incident Energy Level at specified working distance expressed in cal/cm2

· Arc flash Hazard Risk Category (HRC)

· Voltage

· Limited Restricted and Prohibited Approach Distances

· Glove Class

· PPE required.

7.11.1 Install labels on the associated equipment upon completion of shipcheck. Provide training to ship’s crew regarding proper interpretation of labels and how to utilized information to determine proper work practices and PPE.

7.12 Develop a project schedule to include installation of labels and associated milestones. The delivery schedule shall be based on calendar days.

7.13 Forward a shipcheck plan. The plan shall be reviewed by the Government and accepted or rejected based on the plan’s ability to successfully gather the necessary information in the allotted time with the proposed resources. The plan shall have a detailed list of expected shipcheck activities listed on a daily schedule. The plan must demonstrate that the resources proposed will be sufficient to accomplish the task.

7.13.1 Summarize the day’s activities in the notes and highlight any incidences or deviations from the plan.

7.13.2 Submit a shipcheck report denoting all activities that occurred and any anomalies\incidences or deviations from the ship check plan. The report is to highlight the variances between the original study data and the data collected on the ship. The report may be delivered electronically in a format readable by the TPOC.

7.14 Final Deliverables

7.14.1 Arc Flash Hazard Analysis (AFHA)

7.14.2 Installation of labels on electrical equipment indicating the appropriate Arc Flash Protection Boundary (AFPB) and Personal Protective Equipment (PPE)

7.14.3 Five color hard copies of report defined in 7.10.

7.14.4 Five electronic copies of report defined in 7.10.

7.14.5 Five electronic copies on CD of software model and libraries.

7.14.6 Hazard Labels as described in 7.11 and 7.11.1.

7.15 Submit deliverables defined in 7.14 through 7.14.6 no later than 30 days after completion of shipcheck.

7.16 Preparation of Drawings: None additional.

7.17 Manufacturer's Representative: None additional.

8.0 GENERAL REQUIREMENTS: None additional.