Draft Statement of Work.pdf

v4.1_JANUARY2025

STATEMENT OF WORK (SOW)/PERFORMANCE WORK STATEMENT (PWS)

45 KVA 3-PHASE POWER TRANSFORMER FOR SEAWOLF CLASS

1.0 Background

The Naval Undersea Warfare Center (NUWC), Division Newport (NUWCDIVNPT), Rhode Island is seeking to procure a second 45 kilovolt-amperes (KVA) power transformer unit from Torotel Inc. (P/N 34925-0-MTT) to install on SEAWOLF-class submarine applications.

1.1 Places of Performance

Design, Fabrication, and Factory Acceptance Testing (FAT) shall be performed at the contractor’s facility or at a mutually acceptable facility. The government reserves the right to witness and/or obtain FAT test results.

1.2 Authorized Users

N/A

1.3 Sponsors

This effort shall be funded by PMS401 and PMS394 (Advanced Undersea Systems).

1.4 Types of Funding

Direct Cite PMS394, Direct Cite PMS401.

2.0 Scope

NUWCDIVNPT is seeking to procure a second 45KVA power transformer unit from Torotel Inc. to install on SEAWOLF-class submarine applications. An initial unit was already procured from Torotel Inc. on 31 July 2023, and all the required Environmental Qualification Test (EQT) has been conducted. The purpose of this procurement is to build a second unit, with the same specification and characteristics as the original unit.

The transformer shall be a continuous duty device with the electrical characteristics listed below and shall include all the same characteristics as the original unit and meet Grade A shock requirements per MIL-S-901D and SEAWOLF Class Project Peculiar Document (PPD) No. 802- 6335704 as well as the requirements of SEAWOLF-Class Transformer Specification

PSSSN21C-94.

Vendor shall be required to use their existing Factory Acceptance Tests in accordance with Section 4, Technical Requirements and test procedures, which shall be subject to review and approval by the government. The transformer shall undergo a series of power tests and be compliant as indicated by SEAWOLF-Class Transformer Specification PSSSN21C-94, Section 4.4.1.1, Sampling for Group A tests in Table E. In addition, the vendor shall provide Objective Quality Evidence (OQE) that the unit is being built with the same integrity and build standards to demonstrate that the EQT compliance requirements outlined in Section 4 of PSSSN21C-94, which were verified and validated on the previous unit, are being satisfied.

2.1 Program or Systems Supported

This procurement supports multiple systems including sonar, radar, navigation, and weapons systems.

3.0 Applicable Documents

The contractor shall perform the tasking required in Section 4.0 in accordance with (IAW) the below Applicable Documents (ADs).

3.1 DoD Issuances

3.1.1 DoDI 5200.48; Controlled Unclassified Information (CUI), 6 March 2020

3.2 Government Issuances

3.2.1 PSSSN21C-94; Product Specification, Transformers, Power, Dry-Type, 60-Hertz (Hz)

Three Phase, Nuclear High Speed Attack Submarines, Seawolf Class, General Specifications For, September 1987

3.2.2 MIL-S-901D; Shock Tests, H.I. (High-Impact) Shipboard Machinery, Equipment, and Systems, Requirements For, 20-Jun-2017

3.2.3 MIL-STD-740; Airborne and Structureborne Noise Measurements and Acceptance Criteria of Shipboard Equipment

3.2.4 MIL-STD-167-1A; Department of Defense Test Method Standard Mechanical Vibrations of Shipboard Equipment, November 2005

3.2.5 MIL-DTL-2036; Enclosures for Electric and Electronic Equipment, Naval Shipboard, 4 June 2019

3.2.6 MIL-STD-108; Definitions of and Basic Requirements for Electrical and Electronic Equipment

3.2.7 SEAWOLF Class Project Peculiar Document (PPD) No. 802-6335704; Shock Tests, H.I.

(High Impact), Shipboard Machinery, Equipment and Systems, Requirements for, 1 May

3.3 Industry Standards

N/A

4.0 Technical Requirements

NUWCDIVNPT, working in conjunction with Naval Sea Systems Command (NAVSEA) 05Z32 Engineering Manager in Support of Shipboard Electrical Interfaces Naval Surface Warfare Center, Philadelphia Division (NSWCPD), have developed technical requirements contained in this section. The vendor shall supply one three-phase dry-type power transformer in accordance with SEAWOLF specification PSSSN21C-94 with the following characteristics:

4.1 KVA capacity:

The KVA capacity of the transformers shall be 45 KVA at 50°C ambient temperature.

4.2 Voltage rating:

The voltage rating of the transformers shall be 450V primary winding, 120V secondary winding.

4.3 Number of Phases:

The transformers shall be three-phase, with the configuration denoted in 4.5.

4.4 Frequency:

The transformer frequency shall be 60 Hz.

4.5 Winding configuration.

The transformers shall be configured in the delta-to-delta configuration.

4.6 Insulation type:

The transformers shall be dry type transformers.

4.7 Cooling:

Natural convection shall be used to cool the transformers.

4.8 Duty:

The transformers shall operate continuously as described herein.

4.9 Maximum Temp Rise:

Maximum winding temperature rise of the transformers shall be 80°C; maximum core temperature rise shall be 90°C.

4.10 Maximum Ambient Temp:

The transformers shall operate, as described herein, at a maximum ambient temperature of 50°C.

4.11 Weight:

The weight of the individual transformers shall not exceed 640 pounds per Table A of PSSSN21C-94.

4.12 Volume:

The volume of the transformers shall not exceed 9,960 cubic inches per Table A of PSSSN21C-94.

4.13 Losses:

Transformer losses shall not exceed 160 watts (no load) and 870 watts (total) per Table A of PSSSN21C-94.

4.14 Impedance:

Transformer impedance shall have a tolerance of +/- 7.5% of the 2% value specified in Table A of PSSSN21C-94.

4.15 Exciting current:

Transformer exciting current shall not exceed 5% per Table A of PSSSN21C-94.

4.16 Peak inrush current:

Transformer peek inrush current shall not exceed 19 times peak rated primary current per Table A of PSSSN21C-94.

4.17 Cable compartment location:

The cable compartment shall be located at the top of the transformer enclosure.

4.18 Mounting:

The transformers shall be deck mounted and adhere to the dimensions per Figure 3 of PSSSN21C-94 for a 45 KVA transformer.

4.19 Dimensions:

Overall size of transformers shall be limited to the dimensions in Table B of PSSSN21C-94 for 45 KVA: Depth 14.0 inches. Height 21.0 inches, Width 28.0 inches.

4.20 Structureborne Noise:

The transformer structureborne noise shall conform to the acceptance criteria of Figure 4 of PSSSN21C-94 per MIL-STD-740-2.

4.21 Airborne Noise:

The transformer airborne noise shall conform to the limits of Table H of PSSSN21C-94 per MIL-STD-740-1.

4.22 Vibration:

Test per MIL-STD-167-1A, 4 – 14 Hz.

4.23 Shock:

In accordance with Grade A shock testing, MIL-S-901D. Nine blows are required for MWSM testing: 3 blows per direction (half hammer height/full 3” table travel, full hammer height/full 3” table travel, full hammer height/half 1.5” table travel). Hammer height is based on weight on the table.

4.23.1 Vertical:

3 blows, conducted on 25 Hz Ballasted Spring Deck Fixture (BSDF)

4.23.2 Side-over:

3 blows, inclined 90 degrees side-over

4.23.3 Front-over:

3 blows, inclined 30 degrees front-over

4.24 Shock Test Mounting:

The transformers shall be mounted on the Medium-weight shock machine in accordance with Figures 14 or 15 of SEAWOLF Class PPD No. 802-6335704.

4.25 Enclosure:

Drip proof in accordance with class I of MIL-E-2036 and MIL-STD-108

4.26 Group A Tests:

All production transformers shall be subjected to the group A tests specified in Table E of PSSSN21C-94.

4.27 Qualification Tests:

One transformer shall be subjected to the qualification tests specified in Table E of PSSSN21C-94.

4.X Cyberspace/Cyber Workforce (CWF)

5.0 Progress Reports

5.1 Contract Status Report

The Contractor shall prepare a Contractor’s Status Report that indicates the progress of work, status of the program(s), and existing or potential problem areas for all assigned tasks. The Contractor shall submit the Contract Status Report for the same timeframe as each invoice submitted in the Wide Area Workflow (WAWF) Module of the Procurement Integrated Enterprise Environment (PIEE).

Deliverable: CDRL A002 – DI-MGMT-81991

5.2 Training

6.0 Government Furnished Information

7.0 Government Furnished Property

8.0 Quality Surveillance and Performance Standards

The Government shall conduct quality surveillance via various methods including formal and informal meetings, review of technical reports, review of monthly progress reports, and review of deliverables. Contractor performance shall be evaluated in the areas of technical quality, schedule/timeliness, management, and regulatory compliance as follows:

Technical Quality: The government shall evaluate technical quality using the criteria defined in the CDRL, in applicable documents in section 3.0, section 4.0 and GFI in Section 6.0.

Schedule/Timeliness: The government shall evaluate the contractor’s ability to meet negotiated milestones and delivery schedules.

Management: The government shall evaluate the contractor’s ability to integrate and coordinate all activities needed to execute the contract.

Regulatory Compliance: The government shall evaluate the contractor’s compliance with the terms and conditions of the contract relating to applicable regulations and codes.

9.0 Information and Communication Technology (ICT) Accessibility Requirements

The Government has determined that this procurement is an exception to the Information and Communication Technology (ICT) Accessibility Standards (36 C.F.R. Part 1194, Appendix A).

Notwithstanding that an exception exists, the Contractor may furnish items or services provided under this contract that comply with the ICT Accessibility Standards (36 C.F.R. Part 1194, Appendix A).

10.0 Security Compliance

10.1 Program Protection

SECURITY: All Contractor personnel shall adhere to the Security provisions of 32 CFR Part 117

– National Industrial Security Program Operating Manual (NISPOM). While performing work at a Government Facility, Contractor personnel shall comply with the security regulations of the host facility. Applicable FAR, DFARS, NMCARS clauses, and NAVSEA text shall be adhered to in the performance of this contract. Security incidents shall be promptly reported through the companies Facility Security Officer (FSO), to the Contracting Officer’s Representative (COR), Technical Point of Contact (TPOC), and the Cognizant Security Office to NUWCDIVNPT Security.

Controlled Unclassified Information (CUI) including Legacy FOUO and Covered Defense Information (meeting the definition of 48 CFR 252.204–7012(a)) generated and/or provided under this contract shall be marked and safeguarded as specified in DoD Instruction 5200.48, CUI available at:

https://www.esd.whs.mil/Portals/54/Documents/DD/issuances/dodi/520048p.PDF. Any product containing Covered Defense Information shall be assigned a distribution statement (distribution statements B through F) in accordance with DoDI 5230.24 (Distribution Statements on Technical Documents); and DoDI 5230.24, Enclosure 3 Procedures, available at https://www.esd.whs.mil/Portals/54/Documents/DD/issuances/dodi/523024p.pdf

INFORMATION SECURITY: If the work is performed at the Contractor's facility, the Contractor shall implement and maintain security procedures and controls to prevent unauthorized disclosure of classified information and controlled unclassified information (CUI) and to control distribution of CUI in accordance with National Industrial Security Program Operating Manual (NISPOM) codifying 32 CFR Part 117, NISPOM Rule, and SECNAV M- 5510.36B. If the work is performed at the Government's facility, the Contractor shall comply with facility policy.

CUI INCIDENT REPORTING AND RESPONSE: The Contractor shall promptly report any unauthorized, inadvertent, or illegal release or disclosure of CUI to the Contracting Officer’s Representative / Technical Point of Contact (TPOC), Procuring Contracting Officer, and the Security Office. Contractor personnel shall coordinate this effort through the relevant industry site FSO.

PUBLIC RELEASE: Any controlled unclassified information pertaining to this contract shall not be released for public dissemination, including posting to any social media sites such as Facebook or Twitter, unless it has been approved for public release by appropriate U.S.

Government authority. Proposed public releases shall be submitted for approval prior to release through the appropriate U.S. Government Office.

10.2 Operations Security (OPSEC)

OPSEC is a process that identifies critical information to determine if friendly actions can be observed by adversary intelligence systems, determines if information obtained by adversaries could be interpreted to be useful to them, and then executes selected measures that eliminate or reduce adversary exploitation of friendly critical information.

The Contractor shall develop and implement, and update and maintain an OPSEC program to protect controlled unclassified and classified activities, information, equipment, and material used or developed by the Contractor and any subcontractor during performance of the contract.

The Contractor shall be responsible for the subcontractor implementation of the OPSEC requirements. The Contractor developed OPSEC program may include Information Assurance and Communications Security (COMSEC). The OPSEC program shall be in accordance with National Security Presidential Memorandum (NSPM) 28, and at a minimum shall include:

1) Assignment of responsibility for OPSEC direction and implementation.

2) Issuance of procedures and planning guidance for the use of OPSEC techniques to identify vulnerabilities and apply applicable countermeasures.

3) Establishment of OPSEC education and awareness training.

4) Provisions for management, annual review, and evaluation of OPSEC programs.

5) Flow down of OPSEC requirements to subcontractors when applicable.

While performing aboard Government sites, the contractor shall: comply with all OPSEC instructions and policies; include OPSEC as part of its ongoing security awareness program and take all required Agency training; Be responsive to the Supporting OPSEC Manager on a non-interference basis; and Protect sensitive unclassified information and activities, which could compromise classified information or operations, or degrade the planning and execution of operations performed by the Requiring Organization and contractor in support of the mission.

10.3 Electronic Spillage

Electronic Spillage (ES) is defined as a situation where information of higher classification than a system is authorized to process is introduced into that system, intentionally or otherwise. If a Contractor is determined to be responsible for an ES, all direct and indirect costs incurred by the Government for ES remediation will be charged to the Contractor.