Attachment 10d.2 – E144 RWS Bkup Batteries-FMECA.xlsx
XLSX spreadsheet 33 KB Posted
- Attached to
- DRAFT RFP for Integrated Battle Command System (IBCS) LRIP/FRP Federal contract opportunity
- Solicitation number
- W31P4Q-20-R-0015
About this file
This document contains an FMECA (Failure Modes, Effects and Criticality Analysis) worksheet for backup batteries on an E144-RWS (Remote Weapon Station) shelter power system, as well as a draft RFP for the Integrated Battle Command System (IBCS) Low Rate Initial Production/Full Rate Production hardware segment.
The FMECA worksheet lists 21 potential failure modes for the backup batteries, including shorted, loose coupling, inoperable, mechanical failure, open and degraded output. It provides failure effect descriptions, detection methods, severity classifications and calculated failure rates. The draft RFP seeks hardware production for the IBCS, including maintaining approved software/firmware updates, cybersecurity and authority to operate on existing hardware. It would produce IBCS hardware end items per supplied technical data packages and critical item development specification. Engineering changes may be required for obsolescence, new capabilities or export considerations. The solicitation number is W31P4Q-20-R-0015 and it is issued by the Department of the Army Materiel Command Contracting Command Redstone Arsenal.
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Text version
Sheet2
| 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
| 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 No Category I and Category II Classifications
Data
| 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 |
Sheet1
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