Safety Dashboard
PROJECT · EV-700 · BMS / Inverter Domain · ASIL Decomposition Rev 4
Open ASIL-D Items
3
Requires immediate action
▲ +1 since last sprint
Safety Goals
18
14 allocated · 4 pending
▼ 4 closed this week
SPFM (Target ≥97%)
98.4%
Inverter subsystem · Part 5
▲ +0.6% this revision
Work Products
73%
40 / 55 approved
▲ 6 approved this week
Hazard Analysis & Risk Assessment (HARA)
ISO 26262 Part 3
| ID | Hazardous Event | S | E | C | ASIL | Status |
|---|---|---|---|---|---|---|
| H-01 | Unintended vehicle acceleration | 3 | 3 | 2 | ASIL D | In Review |
| H-02 | Loss of traction control (high speed) | 3 | 2 | 3 | ASIL D | Open |
| H-03 | BMS overcurrent — thermal runaway | 3 | 3 | 1 | ASIL C | In Review |
| H-04 | Regen braking loss at high SoC | 2 | 3 | 2 | ASIL B | Verified |
| H-05 | HV contactors fail to open on crash | 3 | 2 | 1 | ASIL B | Closed |
| H-06 | Incorrect SoC display (>15% error) | 1 | 3 | 2 | ASIL A | Closed |
| H-07 | Charging port lock failure | 0 | 3 | 1 | QM | Closed |
ASIL Classification Matrix
S × E × C
CONTROLLABILITY →
C1
C2
C3
S1
QM
QM
A
E1–E4
S2
QM
B
C
S3
B
C
D
↑ SEVERITY
ASIL Distribution
ASIL D3 items
ASIL C2 items
ASIL B4 items
ASIL A / QM9 items
FMEDA Snapshot
Part 5 · HW
Component
Failure Mode
S
O
D
RPN
Gate Driver
Short to GND
8
3
4
96
Current Sensor
Offset drift >2%
6
4
3
72
BMS MCU
RAM bit flip
7
2
2
28
HV Contactor
Fail to open
9
1
3
27
Temp Sensor
Open circuit
5
2
2
20
Diagnostic Coverage (DC)97.1%
λ Total (fit/h)142
PMHF (≤10 FIT target)7.3 FIT
Zone Communication
E/E Architecture
Zone 1
Front Powertrain
ECUs: 4
CAN FD: 2 Mb/s
ASIL D
E2E CRC + ALive
Zone 2
Rear Powertrain
ECUs: 4
Eth: 100BASE-T1
ASIL D
SecOC + MACsec
Zone 3
BMS / HV
ECUs: 3
ISO-SPI: Isolated
ASIL C
Hardware sep.
Zone 4
ADAS Gateway
ECUs: 6
Eth: 1GBASE-T1
ASIL B
UN R155 scope
E2E Protection Coverage94%
SecOC Authenticated Signals88%
Latency Budget Compliance100%
Project Lifecycle (V-Model)
ISO 26262 Part 2
Phase 1
Item Definition & SEooC
Completed — Rev 3.1 approved
Phase 2
HARA & Safety Goals
Completed — 18 SGs defined
Phase 3 — Active
FSC / Technical Safety Concept
3 of 18 SRs pending allocation
Phase 4
SW / HW Architecture Design
Starts Q3 2025
Phase 5
Integration & Safety Validation
Target: Q1 2026
Work Products
2 pending review
Safety Plan
v3.2
✓
HARA Report
v4.0
✓
Functional Safety Concept
v2.1 · DRAFT
⚠
FMEDA — HW Architecture
v1.8 · DRAFT
⚠
DFA Report
v1.4
✓
norxs · ISO 26262 Safety Platform · Confidential — norxs.com
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