Table 3 Risk factor grading.
Risk factors | Risk level | |||
|---|---|---|---|---|
Level 4 (4 points) | Level 3 (3 points) | Level 2 (2 points) | Level 1 (1 points) | |
Establish system | Imperfect | General perfection | Relatively perfect | Perfect |
Preliminary investigation | Imperfect | General perfection | Relatively perfect | Perfect |
Professionalism | Low | Lelatively low | Relatively high | High |
Material submission | Imperfect (4 points) | Perfect (1 points) | ||
Material review | Imperfect (4 points) | Perfect (1 points) | ||
Vehicle performance | Overdue inspection (4 points) | During the inspection period (1 points) | ||
Road factor | Extra-long tunnel (L>3000);extra-large bridge (L>1000 or LK>150)༛curves and other special road sections | Long tunnel (1000< L≤3000);Large bridge (100≤L≤1000 or 40≤LK<150) | Medium tunnel (500< L≤1000);Medium bridge (30< L<100 or 20≤LK<40) | Short tunnel (L≤500);Small bridge (8≤L≤30or 5≤LK<20)༛normal road |
Envirnmental factor | 1) Thick fog 2) Rainstorm/severe rainstorm (Rainfall 50.0 ~ 99.9 mm/100 ~ 250.0 mm/>250 mm) 3) Average wind ≥ Level 9 or gust ≥ Level 11 (≥20.8 m/s or 28.5 m/s) 4) Blizzard | 1) Dense fog 2) Heavy rain (Rainfall 30.0 ~ 49.9 mm) 3) Average wind Level8 or gust Level 9 ~ Level 10 (17.2 m/s ~ 20.7 m/s or 20.8 m/s ~ 28.4 m/s) 4) Heavy snow | 1) Heavy fog 2) Moderate rain (Rainfall 15 ~ 29.9 mm) 3) Average wind Level 7 or gust Level 8 (13.9 m/s ~ 17.1 m/s or 17.2 m/s ~ 20.7 m/s) 4) Moderate snow | 1) Fog 2) Light to moderate rain (Rainfall 10 ~ 14.9 mm) 3) Average wind Level 5 ~ Level6 or gust Level 7 (8.0 m/s ~ 13.8 m/ or 13.9 m/s ~ 17.1 m/s) 4) Light snow or sleet 5) Normal weather |
Physiological factors | Unhealthy (4 points) | Healthy (1 points) | ||
Psychological factors | Unhealthy (4 points) | Healthy (1 points) | ||
Professional skill | Unqualified | Qualified | Good | Excellent |
Crisis awareness | Low | Lelatively low | Relatively high | High |
Storage device performance | Imperfect (4 points) | Perfect (1 points) | ||
GPS | Imperfect (4 points) | Perfect (1 points) | ||
