Table 7 Inspection Frequency
Type of inspection |
| Inspection frequency | |
Patrol Inspection |
| Once every 6 months | |
Periodic Inspection |
| Normal | Once every 1 to 3 years or every 3,000 operations |
|
| Detailed | Once every 6 years |
Unscheduled Inspection |
| As needed | |
6.4 Periodic Inspection Checkpoints
Table 8 Periodic Inspection Checkpoints
No. | Location | Item | Inspection | Criteria | Disposition | Remarks |
|
|
| method |
|
|
|
1 | Operating | Loose bolts, | Tighten using | Make sure all | Tighten if | See Table |
| mechanism | nuts or screws | screwdriver or | bolts, nuts and | loose. | 6 for |
|
|
| wrench. | screws are tight. |
| tightening |
|
|
|
|
|
| torque. |
|
| Dust or foreign | Visual | Make sure there is | Wipe with a dry |
|
|
| matter inside | inspection. | no dust or foreign | cloth. |
|
|
|
|
| matter. |
|
|
|
| Indicator | Visual | Make sure | Check the |
|
|
| operation | inspection. | switching status is | cause and |
|
|
|
|
| properly displayed. | repair. |
|
|
| Part warping | Visual | Make sure no | Check the |
|
|
|
| inspection. | parts are warped | cause and |
|
|
|
|
| or missing. | repair. |
|
|
| Smooth action | Manual | Make sure action | If action is not |
|
|
|
| operation. | is smooth and | smooth, apply |
|
|
|
| Visual | shafts turn | a small amount |
|
|
|
| inspection | smoothly. | of lubricant. |
|
|
|
| or touch. |
|
|
|
|
|
| See |
|
|
|
|
|
| Lubrication |
|
|
|
|
|
| Manual |
|
|
|
2 | Main circuit | Discoloration | Visual | Make sure there is | Check the |
|
|
| due to heat from | inspection. | no discoloration. | cause and |
|
|
| conducting parts |
|
| repair. |
|
|
|
|
|
|
|
|
|
| Loose bolts, | Tighten using | Make sure all | Tighten if | See Table |
|
| nuts or screws | a wrench. | bolts, nuts and | loose. | 6 for |
|
|
|
| screws are tight. |
| tightening |
|
|
|
|
|
| torque. |
|
| Dust on surface | Visual | Make sure there is | Wipe with a |
|
|
| of interrupter | inspection. | no surface dust. | clean dry cloth. |
|
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