Table 1 Ranking criteria of the severity
From: Failure mode effect and criticality analysis of ultrasound device by classification tracking
Score | Severity | |||
|---|---|---|---|---|
Maintenance efficiency | Maintenance cost | Impact on safety | Impact on diagnosis | |
1 ~ 2 | No spare parts need to be replaced, repair time < 4 h | Cost ≤ 10,000 RMB | No impact | No impact on diagnosis |
3 ~ 4 | Spare parts need to be replaced, repair time < 8 h | 10,000RMB < Cost ≤ 50,000RMB | No impact on personnel | Slight impact on diagnosis |
5 ~ 6 | Spare parts need to be replaced, repair time < 24 h | 50,000RMB < Cost ≤ 200,000RMB | Impact on personnel health | Impact on diagnosis |
7 ~ 8 | Spare parts need to be replaced, repair time < 48 h | 200,000 RMB < Cost ≤ 1,000,000RMB | Causes injury to the patient | Serious impact on diagnosis |
9 ~ 10 | Spare parts need to be replaced, repair time ≥ 48 h | Cost > 1,000,000 RMB | Cause serious injury to the patient | Unable to carry out diagnostic work |