Attachment 0010d.2 – E144 RWS Bkup Batteries-FMECA.xlsx
XLSX spreadsheet 33 KB Posted
- Attached to
- RFP for Integrated Battle Command System (IBCS) LRIP/FRP Federal contract opportunity
- Solicitation number
- W31P4Q-20-R-0015
About this file
This document contains a Failure Modes and Effects Criticality Analysis (FMECA) for backup batteries on an Integrated Battle Command System shelter. The FMECA identifies 21 potential failure modes for the backup batteries, including shorted, loose coupling, inoperable, mechanical failure, open, mechanical damage, degraded output, and intermittent output. It analyzes the effects of each failure mode at the component, next higher assembly, and end item levels. The document also provides severity classifications for each failure mode and notes that Engineering Change Orders make the system redundant to mitigate the effects of Category III failures.
The related federal contract opportunity is a solicitation for the Integrated Battle Command System Hardware Low Rate Initial Production/Full Rate Production effort. The requirement includes producing hardware end items, maintaining approved software and firmware updates, and executing any engineering changes. Questions are due by December 10, 2020 and this solicitation is only for contractors who met entrance criteria approved by the Integrated Fires Mission Command Project Office. The contracting agency is the Department of the Army Materiel Command Contracting Command at Redstone Arsenal.
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Text version
Sheet2
| W31P4Q-20-R-0015 | ||
| Attachment 0010d.2 | ||
| Tab 1 of 4 | ||
| Row Labels | Sum of Cm | Count of Failure Mode Description |
| Shorted | 8.54E-06 | 4 |
| Loose Coupling | 4.80E-06 | 3 |
| Inoperable | 4.80E-06 | 3 |
| Mechanical Failure | 4.80E-06 | 3 |
| Open | 4.80E-06 | 3 |
| Mechanical Damage | 4.80E-06 | 3 |
| Degraded Output | 5.34E-07 | 1 |
| Intermittent Output | 5.34E-07 | 1 |
| Grand Total | 3.36E-05 | 21 |
Prelim Analysis
| W31P4Q-20-R-0015 | |||||
| Attachment 0010d.2 | |||||
| Tab 2 of 4 | |||||
| Major End Item: | Shelter - Power | ||||
| Preliminary Analysis | Parent LRU: | E144-RWS Backup Batteries | |||
| Compoment: | BACKUP BATTERIES | ||||
| Mission Phase-Operational Mode: | All Phases | ||||
| Cr = ∑Cm = | 3.36E-05 | ||||
| Failure Modes | Count of | ||||
| Failure Modes | Severity Classifications | Count of |
Seveverity Classification Failure Modes Sum of Cm Count of Failure Modes
| Shorted | 4 | 19.05% | Category III | 21 | Shorted | 0.0000085384 | 4 |
| Loose Coupling | 3 | 14.29% | Shorted | 4 | Loose Coupling | 0.0000048028 | 3 |
| Inoperable | 3 | 14.29% | Loose Coupling | 3 | Inoperable | 0.0000048028 | 3 |
| Mechanical Failure | 3 | 14.29% | Inoperable | 3 | Mechanical Failure | 0.0000048028 | 3 |
| Open | 3 | 14.29% | Mechanical Failure | 3 | Open | 0.0000048028 | 3 |
| Mechanical Damage | 3 | 14.29% | Open | 3 | Mechanical Damage | 0.0000048028 | 3 |
| Degraded Output | 1 | 4.76% | Mechanical Damage | 3 | Degraded Output | 0.0000005336 | 1 |
| Intermittent Output | 1 | 4.76% | Degraded Output | 1 | Intermittent Output | 0.0000005336 | 1 |
| Grand Total | 21 | Intermittent Output | 1 | Grand Total | 0.0000336198 | 21 | |
| Grand Total | 21 |
Cat I and II
| W31P4Q-20-R-0015 | |
| Attachment 0010d.2 | |
| Tab 3 of 4 | |
| No Category I and Category II Classifications |
Data
| W31P4Q-20-R-0015 | |||||||||||||||||||||
| Attachment 0010d.2 | |||||||||||||||||||||
| Tab 4 of 4 | |||||||||||||||||||||
| MEI: | Shelter -Power | ||||||||||||||||||||
| Parent LRU: | E144-RWS Backup Batteries | ||||||||||||||||||||
| Compoment: | BACKUP BATTERIES | ||||||||||||||||||||
| Mission Phase-Operational Mode: | All Phases | ||||||||||||||||||||
| FPMH: | 3.113 | ||||||||||||||||||||
| t: | 72 | hr | |||||||||||||||||||
| Cr = ∑Cm = | 3.36E-05 | ||||||||||||||||||||
| Modified Cr = | 3.36E-05 | ||||||||||||||||||||
| No Category I and Category II Classifications | |||||||||||||||||||||
| Failure Effect at | Failure Detection Method | Compensating 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 | Seveverity | ||||||||||||||||||||
| Classification | Alternate Design | ||||||||||||||||||||
| Modifications | Modified Severity | ||||||||||||||||||||
| Classification | β | βmod | α | λP | Cm | Mod Cm | |||||||||||||||
| 4682 | Backup Batteries - Modeled As A Group Of 2 (Should Be Replaced As A Group). MTBF Is For Random Failure And Not Wear Out. | Degraded Output | Hardware Failure | Degraded Battery Output | Degraded battery backup system | Degraded battery backup system | N/A | N/A | N/A | N/A | TBD | Category III | EOCs are Redundant | Category III | 0.05 | 0.05 | 4.76E-02 | 3.11E-06 | 5.34E-07 | 5.34E-07 | |
| 4683 | Backup Batteries - Modeled As A Group Of 2 (Should Be Replaced As A Group). MTBF Is For Random Failure And Not Wear Out. | Shorted | Hardware Failure | Large current surge resulting in downstream fuse F1 blow | Degraded battery backup system | Degraded battery backup system for a Single EOC | N/A | N/A | OB-001-01 | N/A | TBD | Category III | EOCs are Redundant | Category III | 0.05 | 0.05 | 1.90E-01 | 3.11E-06 | 2.13E-06 | 2.13E-06 | |
| 4684 | Backup Batteries - Modeled As A Group Of 2 (Should Be Replaced As A Group). MTBF Is For Random Failure And Not Wear Out. | Intermittent Output | Hardware Failure | Degraded Battery Output | Degraded battery backup system | Degraded battery backup system | N/A | N/A | N/A | N/A | TBD | Category III | EOCs are Redundant | Category III | 0.05 | 0.05 | 4.76E-02 | 3.11E-06 | 5.34E-07 | 5.34E-07 | |
| 4685 | Battery Terminal Negative | Open | Hardware Failure | Loss of electrical connectivity | Loss of RWS Backup Batteries | Degraded battery backup system | N/A | N/A | N/A | N/A | TBD | Category III | EOCs are Redundant | Category III | 0.05 | 0.05 | 1.43E-01 | 3.11E-06 | 1.60E-06 | 1.60E-06 | |
| 4686 | Battery Terminal Negative | Mechanical Damage | Hardware Failure | Possible loss of electrical connectivity | Possible Loss of RWS Backup Batteries | Possible Degraded battery backup system | N/A | N/A | N/A | N/A | TBD | Category III | EOCs are Redundant | Category III | 0.05 | 0.05 | 1.43E-01 | 3.11E-06 | 1.60E-06 | 1.60E-06 | |
| 4687 | Battery Terminal Negative | Inoperable | Hardware Failure | Probable loss of electrical connectivity | Probable Loss of RWS Backup Batteries | Probable Degraded battery backup system | N/A | N/A | N/A | N/A | TBD | Category III | EOCs are Redundant | Category III | 0.05 | 0.05 | 1.43E-01 | 3.11E-06 | 1.60E-06 | 1.60E-06 | |
| 4688 | Battery Terminal Negative | Loose Coupling | Hardware Failure | Probable loss of electrical connectivity | Probable Loss of RWS Backup Batteries | Probable Degraded battery backup system | N/A | N/A | N/A | N/A | TBD | Category III | EOCs are Redundant | Category III | 0.05 | 0.05 | 1.43E-01 | 3.11E-06 | 1.60E-06 | 1.60E-06 | |
| 4689 | Battery Terminal Negative | Mechanical Failure | Hardware Failure | Loss of electrical connectivity | Loss of RWS Backup Batteries | Degraded battery backup system | N/A | N/A | N/A | N/A | TBD | Category III | EOCs are Redundant | Category III | 0.05 | 0.05 | 1.43E-01 | 3.11E-06 | 1.60E-06 | 1.60E-06 | |
| 4690 | Battery Terminal Negative | SHORTED | Hardware Failure | Short to case resulting in loss of electrical connectivity | Loss of RWS Backup Batteries | Degraded battery backup system | N/A | N/A | N/A | N/A | TBD | Category III | EOCs are Redundant | Category III | 0.05 | 0.05 | 1.90E-01 | 3.11E-06 | 2.13E-06 | 2.13E-06 | |
| 4691 | Battery Terminal Positive | Open | Hardware Failure | Loss of electrical connectivity | Loss of RWS Backup Batteries | Degraded battery backup system | N/A | N/A | N/A | N/A | TBD | Category III | EOCs are Redundant | Category III | 0.05 | 0.05 | 1.43E-01 | 3.11E-06 | 1.60E-06 | 1.60E-06 | |
| 4692 | Battery Terminal Positive | Mechanical Damage | Hardware Failure | Possible loss of electrical connectivity | Possible Loss of RWS Backup Batteries | Possible Degraded battery backup system | N/A | N/A | N/A | N/A | TBD | Category III | EOCs are Redundant | Category III | 0.05 | 0.05 | 1.43E-01 | 3.11E-06 | 1.60E-06 | 1.60E-06 | |
| 4693 | Battery Terminal Positive | Inoperable | Hardware Failure | Probable loss of electrical connectivity | Probable Loss of RWS Backup Batteries | Probable Degraded battery backup system | N/A | N/A | N/A | N/A | TBD | Category III | EOCs are Redundant | Category III | 0.05 | 0.05 | 1.43E-01 | 3.11E-06 | 1.60E-06 | 1.60E-06 | |
| 4694 | Battery Terminal Positive | Loose Coupling | Hardware Failure | Probable loss of electrical connectivity | Probable Loss of RWS Backup Batteries | Probable Degraded battery backup system | N/A | N/A | N/A | N/A | TBD | Category III | EOCs are Redundant | Category III | 0.05 | 0.05 | 1.43E-01 | 3.11E-06 | 1.60E-06 | 1.60E-06 | |
| 4695 | Battery Terminal Positive | Mechanical Failure | Hardware Failure | Loss of electrical connectivity | Loss of RWS Backup Batteries | Degraded battery backup system | N/A | N/A | N/A | N/A | TBD | Category III | EOCs are Redundant | Category III | 0.05 | 0.05 | 1.43E-01 | 3.11E-06 | 1.60E-06 | 1.60E-06 | |
| 4696 | Battery Terminal Positive | SHORTED | Hardware Failure | Short to case resulting in possible F1 Fuse blow | Loss of RWS Backup Batteries | Degraded battery backup system | N/A | N/A | OB-001-01 | N/A | TBD | Category III | EOCs are Redundant | Category III | 0.05 | 0.05 | 1.90E-01 | 3.11E-06 | 2.13E-06 | 2.13E-06 | |
| 4697 | CA connecting RWS Backup Batteries in series | Open | Hardware Failure | Loss of electrical connectivity | Loss of RWS Backup Batteries | Degraded battery backup system | N/A | N/A | N/A | N/A | TBD | Category III | EOCs are Redundant | Category III | 0.05 | 0.05 | 1.43E-01 | 3.11E-06 | 1.60E-06 | 1.60E-06 | |
| 4698 | CA connecting RWS Backup Batteries in series | Mechanical Damage | Hardware Failure | Possible loss of electrical connectivity | Possible Loss of RWS Backup Batteries | Possible Degraded battery backup system | N/A | N/A | N/A | N/A | TBD | Category III | EOCs are Redundant | Category III | 0.05 | 0.05 | 1.43E-01 | 3.11E-06 | 1.60E-06 | 1.60E-06 | |
| 4699 | CA connecting RWS Backup Batteries in series | Inoperable | Hardware Failure | Probable loss of electrical connectivity | Probable Loss of RWS Backup Batteries | Probable Degraded battery backup system | N/A | N/A | N/A | N/A | TBD | Category III | EOCs are Redundant | Category III | 0.05 | 0.05 | 1.43E-01 | 3.11E-06 | 1.60E-06 | 1.60E-06 | |
| 4700 | CA connecting RWS Backup Batteries in series | Loose Coupling | Hardware Failure | Probable loss of electrical connectivity | Probable Loss of RWS Backup Batteries | Probable Degraded battery backup system | N/A | N/A | N/A | N/A | TBD | Category III | EOCs are Redundant | Category III | 0.05 | 0.05 | 1.43E-01 | 3.11E-06 | 1.60E-06 | 1.60E-06 | |
| 4701 | CA connecting RWS Backup Batteries in series | Mechanical Failure | Hardware Failure | Loss of electrical connectivity | Loss of RWS Backup Batteries | Degraded battery backup system | N/A | N/A | N/A | N/A | TBD | Category III | EOCs are Redundant | Category III | 0.05 | 0.05 | 1.43E-01 | 3.11E-06 | 1.60E-06 | 1.60E-06 | |
| 4702 | CA connecting RWS Backup Batteries in series | SHORTED | Hardware Failure | Short to case resulting in loss of electrical connectivity | Loss of RWS Backup Batteries | Degraded battery backup system | N/A | N/A | N/A | N/A | TBD | Category III | EOCs are Redundant | Category III | 0.05 | 0.05 | 1.90E-01 | 3.11E-06 | 2.13E-06 | 2.13E-06 |
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