Attachment 10b.2 – E002 Power Inverter Shelter Power-FMECA.xlsx
XLSX spreadsheet 83 KB Posted
- Solicitation number
- W31P4Q-20-R-0015
About this file
This document contains a preliminary Failure Modes and Effects Criticality Analysis (FMECA) for an AC power inverter component of a shelter power system. The FMECA identifies several potential failure modes including total loss of output or loss of AC output. It analyzes the effects of each failure mode at the component, equipment, and mission levels. Compensating provisions include redundant equipment and a power indicator fault message. The analysis recommends a modified severity classification of Category III-1R due to redundancy.
The related opportunity notice is a draft request for proposal for low-rate initial production and full-rate production of the Integrated Battle Command System hardware. The requirement includes maintaining approved software and firmware updates, achieving authority to operate, and implementing engineering changes. Respondents are not to submit proposals in response to this draft as the government is seeking comments only at this time. The anticipated award is a hardware production contract from the Department of the Army Materiel Command Contracting Command at Redstone Arsenal.
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Text version
Sheet2
| Row Labels | Sum of Cm | Count of Failure Mode Description |
| Loss of AC Output 1 | 0.0003697237 | 1 |
| Loss of AC Output 2 | 0 | 1 |
| No Output | 0.0092430933 | 5 |
| Grand Total | 0.0096128171 | 7 |
Prelim Analysis
| PRELIMINARY ANALYSIS: | Major End Item: | Shelter -Power | |||
| Parent LRU: | E002 - Power Inverter-1000W | ||||
| Compoment: | AC POWER INVERTER (1000W), A803 | ||||
| Mission Phase-Operational Mode: | All Phases | ||||
| FPMH: | 35.9454 | ||||
| t: | 72 | ||||
| Cr = ∑Cm = | 0.00E+00 | ||||
| Failure Modes | Count of | ||||
| Failure Modes | Severity | ||||
| Classifications | Count of |
Seveverity Classification Failure Modes Sum of Cm Count of Failure Modes
| No Output | 5 | 71.43% | Category I | 6 | No Output | 9.24E-03 | 5 |
| Loss of AC Output 1 | 1 | 14.29% | Loss of AC Output 1 | 1 | Loss of AC Output 1 | 3.70E-04 | 1 |
| Loss of AC Output 2 | 1 | 14.29% | No Output | 5 | Loss of AC Output 2 | 0.00E+00 | 1 |
| Grand Total | 7 | Category IV | 1 | Grand Total | 9.61E-03 | 7 | |
| Loss of AC Output 2 | 1 | ||||||
| Grand Total | 7 |
Cat I and Cat II
| MEI: | Shelter -Power | ||||||||||||||||||||||
| Parent LRU: | E002 - Power Inverter-1000W | ||||||||||||||||||||||
| Compoment: | AC POWER INVERTER (1000W), A803 | ||||||||||||||||||||||
| Mission Phase-Operational Mode: | All Phases | ||||||||||||||||||||||
| FPMH: | 35.9454 | ||||||||||||||||||||||
| t: | 72 | ||||||||||||||||||||||
| Cr = ∑Cm = | 9.61E-03 | ||||||||||||||||||||||
| Modified Cr = | 4.81E-04 | (Redundancy) | |||||||||||||||||||||
| Due to the EOC Redundancy the Severity Classifications can be reduced Severity Classification III-1R | |||||||||||||||||||||||
| Failure Effect at | Failure Detection Method | Compemsating Provisions | |||||||||||||||||||||
| ID# | Function | Failure Mode Description | Failure Cause | Local Failure Effects | Next Higher Level Failure Effects | Major End Item Failure Effects | Safety | ||||||||||||||||
| Consideration | Safety | ||||||||||||||||||||||
| Impact | Operator Observation | Visual Indicator | C-Bit | ||||||||||||||||||||
| Capabilities | Severity | ||||||||||||||||||||||
| Classification | Alternate Design | ||||||||||||||||||||||
| Modifications | Modified Severity | ||||||||||||||||||||||
| Classification | β | βmod | α | λP | Cm | Mod Cm | Failure Mode Description | Mission Phase-Operational Mode | |||||||||||||||
| 15 | Provides 120 VAC and acts as an UPS. Converts +28 VDC from the NG2602 PS and vehicle battery. Output is connected to CB18 & 19 and from there to receptacles on racks 1 to 6. | No Output | Hardware Failure | Loss of DC/AC Inverter. | Loss of downstream components connected to CB18 and CB19 | Loss of Mission due to loss of critical components - Red Switches (2), Red Router, Blk Router | N/A | N/A | N/A | VI-001-50 (Power Inverter-1000W Power Indicator Fault) | TBD | Category I | EOCs are Redundant | Category III-1R | 1.00 | 0.05 | 0.7143 | 3.59E-05 | 1.85E-03 | 9.24E-05 | Common Cause Failure | All Phases | |
| 16 | Provides 120 VAC and acts as an UPS. Converts +28 VDC from the NG2602 PS and vehicle battery. Output is connected to CB18 & 19 and from there to receptacles on racks 1 to 6. | No Output | Hardware Failure | Loss of DC/AC Inverter. | Loss of downstream components connected to CB18 and CB19 | Loss of Mission due to loss of critical components - Red Switches (2), Red Router, Blk Router | N/A | N/A | N/A | VI-001-50 (Power Inverter-1000W Power Indicator Fault) | TBD | Category I | EOCs are Redundant | Category III-1R | 1.00 | 0.05 | 0.7143 | 3.59E-05 | 1.85E-03 | 9.24E-05 | Common Cause Failure | All Phases | |
| 17 | Provides 120 VAC and acts as an UPS. Converts +28 VDC from the NG2602 PS and vehicle battery. Output is connected to CB18 & 19 and from there to receptacles on racks 1 to 6. | No Output | Hardware Failure | Loss of DC/AC Inverter. | Loss of downstream components connected to CB18 and CB19 | Loss of Mission due to loss of critical components - Red Switches (2), Red Router, Blk Router | N/A | N/A | N/A | VI-001-50 (Power Inverter-1000W Power Indicator Fault) | TBD | Category I | EOCs are Redundant | Category III-1R | 1.00 | 0.05 | 0.7143 | 3.59E-05 | 1.85E-03 | 9.24E-05 | Common Cause Failure | All Phases | |
| 18 | Provides 120 VAC and acts as an UPS. Converts +28 VDC from the NG2602 PS and vehicle battery. Output is connected to CB18 & 19 and from there to receptacles on racks 1 to 6. | No Output | Hardware Failure | Loss of DC/AC Inverter. | Loss of downstream components connected to CB18 and CB19 | Loss of Mission due to loss of critical components - Red Switches (2), Red Router, Blk Router | N/A | N/A | N/A | VI-001-50 (Power Inverter-1000W Power Indicator Fault) | TBD | Category I | EOCs are Redundant | Category III-1R | 1.00 | 0.05 | 0.7143 | 3.59E-05 | 1.85E-03 | 9.24E-05 | Common Cause Failure | All Phases | |
| 19 | Provides 120 VAC and acts as an UPS. Converts +28 VDC from the NG2602 PS and vehicle battery. Output is connected to CB18 & 19 and from there to receptacles on racks 1 to 6. | No Output | Hardware Failure | Loss of DC/AC Inverter. | Loss of downstream components connected to CB18 and CB19 | Loss of Mission due to loss of critical components - Red Switches (2), Red Router, Blk Router | N/A | N/A | N/A | VI-001-50 (Power Inverter-1000W Power Indicator Fault) | TBD | Category I | EOCs are Redundant | Category III-1R | 1.00 | 0.05 | 0.7143 | 3.59E-05 | 1.85E-03 | 9.24E-05 | Common Cause Failure | All Phases | |
| 20 | Provides 120 VAC and acts as an UPS. Converts +28 VDC from the NG2602 PS and vehicle battery. Output is connected to CB18 & 19 and from there to receptacles on racks 1 to 6. | Loss of AC Output 1 | Hardware Failure | Loss of AC Output Power | Loss of downstream components connected to CB18 and CB19 | Loss of Mission due to loss of critical components - Red Switches (2), Red Router, Blk Router | N/A | N/A | N/A | VI-001-50 (Power Inverter-1000W Power Indicator Fault) | TBD | Category I | EOCs are Redundant | Category III-1R | 1.00 | 0.05 | 0.1429 | 3.59E-05 | 3.70E-04 | 1.85E-05 | Loss of AC Output 1 | All Phases |
E002 Data
| MEI: | Shelter -Power | ||||||||||||||||||||||
| Parent LRU: | E002 - Power Inverter-1000W | ||||||||||||||||||||||
| Compoment: | AC POWER INVERTER (1000W), A803 | ||||||||||||||||||||||
| Mission Phase-Operational Mode: | All Phases | ||||||||||||||||||||||
| FPMH: | 35.9454 | ||||||||||||||||||||||
| t: | 72 | ||||||||||||||||||||||
| Cr = ∑Cm = | 9.61E-03 | ||||||||||||||||||||||
| Modified Cr = | 4.81E-04 | (Redundancy) | |||||||||||||||||||||
| Due to the EOC Redundancy the Severity Classifications can be reduced Severity Classification III-1R | |||||||||||||||||||||||
| Failure Effect at | Failure Detection Method | Compemsating Provisions | |||||||||||||||||||||
| ID# | Function | Failure Mode Description | Failure Cause | Local Failure Effects | Next Higher Level Failure Effects | Major End Item Failure Effects | Safety | ||||||||||||||||
| Consideration | Safety | ||||||||||||||||||||||
| Impact | Operator Observation | Visual Indicator | C-Bit | ||||||||||||||||||||
| Capabilities | Severity | ||||||||||||||||||||||
| Classification | Alternate Design | ||||||||||||||||||||||
| Modifications | Modified Severity | ||||||||||||||||||||||
| Classification | β | βmod | α | λP | Cm | Mod Cm | Failure Mode Description | Mission Phase-Operational Mode | |||||||||||||||
| 15 | Provides 120 VAC and acts as an UPS. Converts +28 VDC from the NG2602 PS and vehicle battery. Output is connected to CB18 & 19 and from there to receptacles on racks 1 to 6. | No Output | Hardware Failure | Loss of DC/AC Inverter. | Loss of downstream components connected to CB18 and CB19 | Loss of Mission due to loss of critical components - Red Switches (2), Red Router, Blk Router | N/A | N/A | N/A | VI-001-50 (Power Inverter-1000W Power Indicator Fault) | TBD | Category I | EOCs are Redundant | Category III-1R | 1.00 | 0.05 | 0.7143 | 3.59E-05 | 1.85E-03 | 9.24E-05 | Common Cause Failure | All Phases | |
| 16 | Provides 120 VAC and acts as an UPS. Converts +28 VDC from the NG2602 PS and vehicle battery. Output is connected to CB18 & 19 and from there to receptacles on racks 1 to 6. | No Output | Hardware Failure | Loss of DC/AC Inverter. | Loss of downstream components connected to CB18 and CB19 | Loss of Mission due to loss of critical components - Red Switches (2), Red Router, Blk Router | N/A | N/A | N/A | VI-001-50 (Power Inverter-1000W Power Indicator Fault) | TBD | Category I | EOCs are Redundant | Category III-1R | 1.00 | 0.05 | 0.7143 | 3.59E-05 | 1.85E-03 | 9.24E-05 | Common Cause Failure | All Phases | |
| 17 | Provides 120 VAC and acts as an UPS. Converts +28 VDC from the NG2602 PS and vehicle battery. Output is connected to CB18 & 19 and from there to receptacles on racks 1 to 6. | No Output | Hardware Failure | Loss of DC/AC Inverter. | Loss of downstream components connected to CB18 and CB19 | Loss of Mission due to loss of critical components - Red Switches (2), Red Router, Blk Router | N/A | N/A | N/A | VI-001-50 (Power Inverter-1000W Power Indicator Fault) | TBD | Category I | EOCs are Redundant | Category III-1R | 1.00 | 0.05 | 0.7143 | 3.59E-05 | 1.85E-03 | 9.24E-05 | Common Cause Failure | All Phases | |
| 18 | Provides 120 VAC and acts as an UPS. Converts +28 VDC from the NG2602 PS and vehicle battery. Output is connected to CB18 & 19 and from there to receptacles on racks 1 to 6. | No Output | Hardware Failure | Loss of DC/AC Inverter. | Loss of downstream components connected to CB18 and CB19 | Loss of Mission due to loss of critical components - Red Switches (2), Red Router, Blk Router | N/A | N/A | N/A | VI-001-50 (Power Inverter-1000W Power Indicator Fault) | TBD | Category I | EOCs are Redundant | Category III-1R | 1.00 | 0.05 | 0.7143 | 3.59E-05 | 1.85E-03 | 9.24E-05 | Common Cause Failure | All Phases | |
| 19 | Provides 120 VAC and acts as an UPS. Converts +28 VDC from the NG2602 PS and vehicle battery. Output is connected to CB18 & 19 and from there to receptacles on racks 1 to 6. | No Output | Hardware Failure | Loss of DC/AC Inverter. | Loss of downstream components connected to CB18 and CB19 | Loss of Mission due to loss of critical components - Red Switches (2), Red Router, Blk Router | N/A | N/A | N/A | VI-001-50 (Power Inverter-1000W Power Indicator Fault) | TBD | Category I | EOCs are Redundant | Category III-1R | 1.00 | 0.05 | 0.7143 | 3.59E-05 | 1.85E-03 | 9.24E-05 | Common Cause Failure | All Phases | |
| 20 | Provides 120 VAC and acts as an UPS. Converts +28 VDC from the NG2602 PS and vehicle battery. Output is connected to CB18 & 19 and from there to receptacles on racks 1 to 6. | Loss of AC Output 1 | Hardware Failure | Loss of AC Output Power | Loss of downstream components connected to CB18 and CB19 | Loss of Mission due to loss of critical components - Red Switches (2), Red Router, Blk Router | N/A | N/A | N/A | VI-001-50 (Power Inverter-1000W Power Indicator Fault) | TBD | Category I | EOCs are Redundant | Category III-1R | 1.00 | 0.05 | 0.1429 | 3.59E-05 | 3.70E-04 | 1.85E-05 | Loss of AC Output 1 | All Phases | |
| 21 | Provides 120 VAC and acts as an UPS. Converts +28 VDC from the NG2602 PS and vehicle battery. Output is connected to CB18 & 19 and from there to receptacles on racks 1 to 6. | Loss of AC Output 2 | Hardware Failure | Loss of AC Output Power | No Effect - Output not used. | No Effect - Output not used. | TBD | Category IV | EOCs are Redundant | Category IV | 0.00 | 0.00 | 0.1429 | 3.59E-05 | 0.00E+00 | 0.00E+00 | Loss of AC Output 2 | All Phases |
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