Table 2 Powered haulage accident risk point.
Inherent risk | Quantitative indicators | Characteristic indicators | Quantitative value | |
|---|---|---|---|---|
hs | Hazard isolation | Non-hazard isolation measures | 1.0 | |
Fault safe | Fail safe | 1.2 | 1.2 | |
Fail risk | 1.4 | 1.4 | ||
Fault risk | Fail safe | 1.3 | 1.3 | |
Fail risk | 1.7 | 1.7 | ||
E | Number of people exposed at risk point (P) | 100 ≤ P | 9 | |
30 < P ≤ 99 | 7 | |||
10 < P ≤ 29 | 5 | |||
3 < P ≤ 9 | 3 | |||
0 ≤ P ≤ 2 | 1 | |||
M | Characterized by the classification result of inclined length w of shaft depth | w < 250 | 1 | |
250 ≤ w < 500 | 3 | |||
500 ≤ w < 750 | 5 | |||
750 ≤ w < 1000 | 7 | |||
1000 ≤ w | 9 | |||
K1 | Wire rope on-line monitoring | Monitoring and control facilities failure rate l | 1 + l | |
Video surveillance facility | ||||
K2 | Equipment maintenance operation | Number of high-risk types of operations involved in powered haulage system | 1 + 0.05t | |
Motor vehicle driving operation | ||||
Safety inspection operation | ||||
Hoist operation | ||||
