Att_1_ECW-50_Specifications.docx

ECW-50 system Requirement Report Author: MB Revision: 1.0 Document Number: 4K7_ECW50_001

Date: January 29, 2019

REVISION HISTORY

-added Distribution D statement -Header removals with minor editing -Rational removals David Nelson

TABLE OF CONTENTS

TABLE OF FIGURES

Figure 1. Meet SPN-50 cooling needs Table 10

EXECUTIVE SUMMARY

This document captures high level system requirements for the SPN-50 Radar System Electronic Cooled Water (ECW-50) system.

ECW-50 system Date: January 29, 2019 Requirement Report Document Number: 4K7_ECW50_001

Use or disclosure of data contained on this sheet is subject to the restrictions on the title page i

Introduction Purpose This document provides ECW-50 system requirements with their properties including requirement ID, requirement name, requirement text, and requirement source where applicable. The numbering schema of the requirements ID shows the requirement traceability, meaning requirement with the ID 1.1 represent a child requirement of the requirement with the ID 1, requirement with the ID 1.1.1 is a child requirement of the requirement with the ID 1.1 The children requirements are also considered derived requirements and are intended to further refine the higher level requirement to facilitate the ECW-50 system design.

Scope The ECW-50 system is a liquid cooling system that will provide chilled liquid to the SPN-50 Radar System components that are designed to rely on the liquid cooling to dissipate the large amounts of heat generated by those components. The SPN-50 radar system components that require liquid cooling are Solid State Transmitter (SSTX), and two Signal Data Units (SDUs).

The ECW-50 system will be installed with the SPN-50 onboard the CVN and L-class ships and must integrated into existing shipboard environment with minimum impact.

The ECW-50 system has to meet the Grade A shock and vibration requirements as defined in the MIL-DTL-901E.

Use or disclosure of data contained on this sheet is subject to the restrictions on the title page

1 Meet SPN-50 cooling needs

1.1 Meet cooling needs of the SPN-50 SSTX

1.1.1 Minimum water flow rate for SSTX

The ECW-50 system shall provide, to the SPN-50 SSTX, chilled water with the minimum water flow rate of 9.7 Gallons per Minute (GPM).

1.1.2 SSTX input water pressure

The ECW-50 system shall provide, to the SPN-50 SSTX, chilled water at a minimum pressure of 26 psi, which is equal to the pressure drop through the SSTX at the 9.7 GPM minimum flowrate, and a maximum pressure of 108 psi.

1.1.3 Temperature of the chilled water for SSTX

The ECW-50 system shall provide, to the SPN-50 SSTX, water at the temperature of greater than or equal to 41 deg. F and less than or equal to 59 deg. F.

1.1.4 SSTX heat transfer need

The ECW-50 system shall support the estimated SPN-50 SSTX heat emission to cooling water of 11 kW (37,534 BTU/h).

1.1.5 SSTX Proof pressure

The ECW-50 system shall have provisions to ensure that the maximum pressure of the chilled water at the inlet of the SSTX will not exceed 150 psi.

1.1.6 SSTX coupling

The ECW-50 system shall connect to the AN/SPN-50 SSTX using 1.3125-12 UNJ connector.

1.2 Meet cooling needs of the SPN-50 SDU 1

1.2.1 Minimum Water flow rate for SDU 1

The ECW-50 system shall provide, to the SPN-50 SDU 1, chilled water with the minimum water flow rate of 1.6 Gallons per Minute (GPM).

1.2.2 SDU 1 input water pressure

The ECW-50 system shall provide, to the SPN-50 SDU 1, chilled water at a minimum pressure of 1.6 psi, which is equal to the pressure drop through the SDU at the 1.6 GPM minimum flowrate, and a maximum pressure of 58 psi.

1.2.3 Temperature of the chilled water for SDU 1

The ECW-50 system shall provide, to the SPN-50 SDU 1, water at the temperature of greater than or equal to 41 deg. F and less than or equal to 59 deg. F.

1.2.4 SDU 1 heat transfer need

The ECW-50 system shall support the SPN-50 SDU 1 heat emission to cooling water of 1.3 kW (4,306 BTU/h).

1.2.5 SDU 1 proof pressure

The ECW-50 system shall have provisions to ensure that the maximum pressure of the chilled water at the inlet of the SDU 1 will not exceed 80 psi.

1.2.6 SDU 1 coupling

The ECW-50 system shall connect to the AN/SPN-50 SDU1 using 0.8750-14 UNJF connector.

1.3 Meet cooling needs of the SPN-50 SDU 2

1.3.1 Minimum Water flow rate for SDU 2

The ECW-50 system shall provide, to the SPN-50 SDU 2, chilled water with the minimum water flow rate of 1.6 Gallons per Minute (GPM).

1.3.2 SDU 2 input water pressure

The ECW-50 system shall provide, to the SPN-50 SDU 2, chilled water at a minimum pressure of 1.6 psi, which is equal to the pressure drop through the SDU at the 1.6 GPM minimum flowrate, and a maximum pressure of 58 psi.

1.3.3 Temperature of the chilled water for SDU 2

The ECW-50 system shall provide, to the SPN-50 SDU 2, water at the temperature of greater than or equal to 41 deg. F and less than or equal to 59 deg. F.

1.3.4 SDU 2 heat transfer need

The ECW-50 system shall support the SPN-50 SDU 2 heat emission to cooling water of 1.3 kW (4,306 BTU/h).

1.3.5 SDU 2 proof pressure

The ECW-50 system shall have provisions to ensure that the maximum pressure of the chilled water at the inlet of the SDU 2 will not exceed 80 psi.

1.3.6 SDU 2 coupling

The ECW-50 system shall connect to the AN/SPN-50 SDU2 using 0.8750-14 UNJF connector.

2 Integrate into Shipboard Environment Constraints

2.1 Meet shipboard power requirements

The ECW-50 system shall use the ship AC power that conforms to the MIL-STD-1399-300.

2.2 Meet shock requirements

The ECW-50 system shall meet Grade A shock requirements specified in MIL-DTL-901E.

2.3 Ship power characteristics

The ECW-50 system shall use a type 1, 60 Hz, 440 VAC, 3 phase, Delta ship power.

2.4 Withstand ship ambient temperature

The ECW-50 system equipment mounted in conditioned areas shall operate during and after exposure to ambient air temperature extremes of a minimum of 0 deg. C (32 deg. F) to a maximum of +50 deg. C (+122 deg. F) in accordance with MIL-STD-810G method 501.5 (High Temperature) and 502.3 (Low Temperature).

2.5 Operate after storage temperatures

The ECW-50 system shall operate without any degradation in performance after exposure to storage temperatures of a minimum of -46 deg. C (-50 deg. F) to a maximum of +70 deg. C (+158 deg. F) in accordance with MIL-STD-810G Method 501.5 (High Temperature) and 502.5 (Low Temperature).

2.6 Operate in ship humidity levels

The ECW-50 system shall operate in the ship humidity of 0 – 95%

2.7 Operate in dusty conditions

The ECW-50 system shall operate during and after exposure to dust as described in MIL-STD-810G, Method 510.5

2.8 Resist effects of corrosion due to salt

The ECW-50 system shall resist the effects of corrosive environment due to salt spray/fog in accordance with MIL-STD-810G, Method 503.5

2.9 Shipboard Chilled Water Characteristics

The ECW-50 system shall connect to the ship’s chilled water system and interface with water that meets the purity specifications as defined in the DOD-STD-1399 Section 532 paragraph 5.2.1.

Chilled water that (1) has a maximum oxygen concentration of 0.5 parts per million by weight, (2) contains solids whose size will be less than or equal to 0.5 micrometers, and (3) has conductivity less than or equal to 2.0 mircosiemens per centimeter corrected to 25 deg. C (77 deg. F)

2.10 Shipboard Electromagnetic Environment Requirements

The ECW-50 system shall meet applicable MIL-STD-464C/461G requirements for shipboard equipment installed below decks. At a minimum, the following MIL-STD-461 requirements must be met:

· CE101: Conducted emissions, power leads, 30 Hz to 10 kHz (MIL-STD-461G, fig. CE101-2).

· CE102: Conducted emissions, power leads, 10 kHz to 10 MHz (MIL-STD-461G, fig. CE102-1).

· CS101: Conducted susceptibility, power leads, 30 Hz to 150 kHz (MIL-STD-461G, fig. CS101-1, Curve #1).

· CS114: Conducted susceptibility, 10 kHz to 200 MHz (MIL-STD-461G, fig. CS114-1, curve #2).

· CS116: Conducted susceptibility, 10 kHz to 100 MHz (MIL-STD-461G, fig. CS116-2).

· CS118: Conducted susceptibility, personnel borne electrostatic discharge.

· RE101: Radiated emissions, magnetic field, 30 Hz to 100 kHz (MIL-STD-461G, fig. RE101-2).

· RE102: Radiated emissions, electric field, 10 kHz to 10 times the highest internally-generated frequency produced by the EUT (MIL-STD-461G, fig. RE102-1, Below Decks limit).

· RS101: Radiated susceptibility, magnetic fields, 30 Hz to 100 kHz (MIL-STD-461G, fig RS101-1).

· RS103: Radiated susceptibility, electric fields, 2 MHz to 18 GHz at levels up 10V/m (MIL-STD-461G, Table XI).

2.11 Shipboard Accessibility

The ECW-50 system shall be hatchable for US Navy Carrier and Amphibious Assault ships.

2.12 Meet vibration requirements

The ECW-50 system shall meet Type I vibration requirements specified in MIL-STD-167-1A.

3 Human Engineering Design Criteria

3.1 Warning of unsafe function

In accordance with MIL-STD-1472G: the ECW-50 system shall provide visual, or audible, safety warnings, cautions, of unsafe functions and/or conditions that could contribute to a safety hazard to the system user.

3.2 Eliminate/cover up unsafe objects

In accordance with MIL-STD-1472G, the ECW-50 system hazards, such as sharp corners, projections, moving parts, electrical potential and any other elements that could cause injury, shall be eliminated or covered with protective shields or guards.

3.3 Safety marking - installation

In accordance with MIL-STD-1472G, the ECW-50 system shall be marked when safety hazards are present during the installation of system equipment or parts thereof.

3.4 Safety marking - maintenance

The ECW-50 system shall be marked when safety hazards are present during the maintenance of the system equipment or parts thereof.

3.5 Safety marking - operation

The ECW-50 system shall be marked when safety hazards are present during the operation of the system equipment or parts thereof.

3.6 Safety marking - repair

The ECW-50 system shall be marked when safety hazards are present during the repair of the system equipment or parts thereof.

3.7 Safety marking - replacement

The ECW-50 system shall be marked when safety hazards are present during the replacement of the system equipment or parts thereof.

3.8 Safety marking - points of access and barriers

The ECW-50 system guards, barriers, access doors, covers and plates shall be marked when they protect personnel from safety hazards.

3.9 Safety marking - hazardous material

The ECW-50 system parts containing hazardous material shall be marked with appropriate hazard warnings in accordance with MIL-STD-129R.

3.10 Protect personnel from hazards

The ECW-50 system shall protect personnel from conditions that create risk of death, injury, acute chronic illness throughout the system life-cycle in accordance with MIL-STD-1472G.

Appendix A: Requirements Table Meet SPN-50 cooling needs Table

Meet SPN-50 cooling needs Table

1.1.1

Minimum water flow rate for SSTX The ECW-50 system shall provide, to the SPN-50 SSTX, chilled water with the minimum water flow rate of 9.7 Gallons per Minute (GPM).

Requirement

Meet cooling needs of the SPN-50 SSTX [Meet SPN-50 cooling needs]

1.1.2

SSTX input water pressure The ECW-50 system shall provide, to the SPN-50 SSTX, chilled water at a minimum pressure of 26 psi, which is equal to the pressure drop through the SSTX at the 9.7 GPM minimum flowrate, and a maximum pressure of 108 psi.

Requirement

Meet cooling needs of the SPN-50 SSTX [Meet SPN-50 cooling needs]

1.1.3

Temperature of the chilled water for SSTX

Meet cooling needs of the SPN-50 SSTX [Meet SPN-50 cooling needs]

1.1.4

SSTX heat transfer need The ECW-50 system shall support the SPN-50 SSTX heat emission to cooling water of 11 kW (37,534 BTU/h).

Requirement

Meet cooling needs of the SPN-50 SSTX [Meet SPN-50 cooling needs]

1.1.5

SSTX Proof pressure

Meet cooling needs of the SPN-50 SSTX [Meet SPN-50 cooling needs]

1.1.6

SSTX coupling The ECW-50 system shall connect to the AN/SPN-50 SSTX using 1.3125-12 UNJ connector.

Requirement

Meet cooling needs of the SPN-50 SSTX [Meet SPN-50 cooling needs]

1.2

1.2.1

Minimum Water flow rate for SDU 1 The ECW-50 system shall provide, to the SPN-50 SDU 1, chilled water with the minimum water flow rate of 1.6 Gallons per Minute (GPM).

Requirement

Meet cooling needs of the SPN-50 SDU 1 [Meet SPN-50 cooling needs]

1.2.2

SDU 1 input water pressure The ECW-50 system shall provide, to the SPN-50 SDU 1, chilled water at a minimum pressure of 1.6 psi, which is equal to the pressure drop through the SDU at the 1.6 GPM minimum flowrate, and a maximum pressure of 58 psi.

Requirement

Meet cooling needs of the SPN-50 SDU 1 [Meet SPN-50 cooling needs]

1.2.3

Temperature of the chilled water for SDU 1

Meet cooling needs of the SPN-50 SDU 1 [Meet SPN-50 cooling needs]

1.2.4

SDU 1 heat transfer need

Meet cooling needs of the SPN-50 SDU 1 [Meet SPN-50 cooling needs]

1.2.5

SDU 1 proof pressure

Meet cooling needs of the SPN-50 SDU 1 [Meet SPN-50 cooling needs]

1.2.6

SDU 1 coupling The ECW-50 system shall connect to the AN/SPN-50 SDU1 using 0.8750-14 UNJF connector.

Requirement

Meet cooling needs of the SPN-50 SDU 1

1.3

1.3.1

Minimum water flow rate for SDU 2 The ECW-50 system shall provide, to the SPN-50 SDU 2, chilled water with the minimum water flow rate of 1.6 Gallons per Minute (GPM).

Requirement

Meet cooling needs of the SPN-50 SDU 2 [Meet SPN-50 cooling needs]

1.3.2

SDU 2 input water pressure The ECW-50 system shall provide, to the SPN-50 SDU 2, chilled water at a minimum pressure of 1.6 psi, which is equal to the pressure drop through the SDU at the 1.6 GPM minimum flowrate, and a maximum pressure of 58 psi.

Requirement

Meet cooling needs of the SPN-50 SDU 2 [Meet SPN-50 cooling needs]

1.3.3

Temperature of the chilled water for SDU 2

Meet cooling needs of the SPN-50 SDU 2 [Meet SPN-50 cooling needs]

1.3.4

SDU 2 heat transfer need

Meet cooling needs of the SPN-50 SDU 2 [Meet SPN-50 cooling needs]

1.3.5

SDU 2 proof pressure

Meet cooling needs of the SPN-50 SDU 2 [Meet SPN-50 cooling needs]

1.3.6

SDU 2 coupling The ECW-50 system shall connect to the AN/SPN-50 SDU2 using 0.8750-14 UNJF connector.

Requirement

Meet cooling needs of the SPN-50 SDU 2

2.1

Meet shipboard power requirements The ECW-50 system shall use the ship AC power that conforms to the MIL-STD-1399-300.

Requirement

Integrate into Shipboard Environment Constraints [Model]

2.2

Meet shock requirements The ECW-50 system shall meet Grade A shock requirements specified in MIL-DTL-901E.

Requirement

Integrate into Shipboard Environment Constraints [Model]

2.3

Ship power characteristics The ECW-50 system shall use a type 1, 60 Hz, 440 VAC, 3 phase, Delta ship power.

Requirement

Integrate into Shipboard Environment Constraints [Model]

2.4

Withstand ship ambient temperature

Integrate into Shipboard Environment Constraints [Model]

2.5

Operate after storage temperatures

Integrate into Shipboard Environment Constraints [Model]

2.6

Operate in ship humidity levels

Integrate into Shipboard Environment Constraints [Model]

2.7

Operate in dusty conditions

Integrate into Shipboard Environment Constraints [Model]

2.8

Resist effects of corrosion due to salt

Integrate into Shipboard Environment Constraints [Model]

2.9

Shipboard Chilled Water Characteristics The ECW-50 system shall connect to the ship’s chilled water system and interface with water that meets the purity specifications as defined in the DOD-STD-1399 section 532 paragraph 5.2.1.

Requirement

Integrate into Shipboard Environment Constraints [Model]

2.10

Shipboard Electromagnetic Environment Requirements The ECW-50 system shall meet applicable MIL-STD-464C/461G requirements for shipboard equipment installed below decks. As a minimum, the following MIL-STD-461 requirements must be met:

· CE101: Conducted emissions, power leads, 30 Hz to 10 kHz (MIL-STD-461G, fig. CE101-2).

· CE102: Conducted emissions, power leads, 10 kHz to 10 MHz (MIL-STD-461G, fig. CE102-1).

· CS101: Conducted susceptibility, power leads, 30 Hz to 150 kHz (MIL-STD-461G, fig. CS101-1, Curve #1).

· CS114: Conducted susceptibility, 10 kHz to 200 MHz (MIL-STD-461G, fig. CS114-1, curve #2).

· CS116: Conducted susceptibility, 10 kHz to 100 MHz (MIL-STD-461G, fig. CS116-2).

· CS118: Conducted susceptibility, personnel borne electrostatic discharge.

· RE101: Radiated emissions, magnetic field, 30 Hz to 100 kHz (MIL-STD-461G, fig. RE101-2).

· RE102: Radiated emissions, electric field, 10 kHz to 10 times the highest internally-generated frequency produced by the EUT (MIL-STD-461G, fig. RE102-1, Below Decks limit).

· RS101: Radiated susceptibility, magnetic fields, 30 Hz to 100 kHz (MIL-STD-461G, fig RS101-1).

· RS103: Radiated susceptibility, electric fields, 2 MHz to 18 GHz at levels up 10V/m (MIL-STD-461G, Table XI).

Requirement

Integrate into Shipboard Environment Constraints [Model]

2.11

Shipboard Accessibility The ECW-50 system shall be hatchable for US Navy Carrier and Amphibious Assault ships.

Requirement

Integrate into Shipboard Environment Constraints [Model]

2.12

Meet Vibration Requirement

Integrate into Shipboard Environment Constraints [Model]

3.1

Warning of unsafe function

Human Engineering Design Criteria [Model]

3.2

Eliminate/cover up unsafe objects

Human Engineering Design Criteria [Model]

3.3

Safety marking - installation

Human Engineering Design Criteria [Model]

3.4

Safety marking - maintenance

Human Engineering Design Criteria [Model]

3.5

Safety marking - operation

Human Engineering Design Criteria [Model]

3.6

Safety marking - repair

Human Engineering Design Criteria [Model]

3.7

Safety marking - replacement

Human Engineering Design Criteria [Model]

3.8

Safety marking - points of access and barriers

Human Engineering Design Criteria [Model]

3.9

Safety marking - hazardous material

Human Engineering Design Criteria [Model]

3.10

Protect personnel from hazards

Human Engineering Design Criteria [Model] image2.jpeg image1.jpeg