Mich. Admin. Code R. 460.2569
Current through Vol. 24-21, December 1, 2024
Rule 69. The following electricity transmission and distribution records shall be retained for the periods listed:
| (a) Substation and transmission line logs. | 3 years. |
| (b) System operator's daily logs and reports of operation. | 3 years. |
| (c) Storage battery and other equipment logs and records. | 3 years. |
| (d) Interruption logs and reports. | 6 years. |
| (e) Records of substation general inspections and operation tests. | 3 years. |
| (f) Apparatus failure reports. | 3 years. |
| (g) Line-trouble reports and records. | 3 years. |
| (h) Lightning and storm data. | 3 years. |
| (i) Insulator test records. | 3 years. |
| (j) Reports on inspections and repairs of all street openings. | 6 years. |
| (k) Records of meter tests. | Until superseding test, but not less than 2 years or as may be necessary to comply with service rules regarding refunds on fast meters. |
| (1) Meter shop reports (monthly reports summarizing tests and repairs). | 3 years. |
| (m) Meter history records. | For the life of the meter or as may be necessary to comply with service rules regarding refunds on fast meters. |
| (n) Transformer history records. | For the life of the transformer. |
| (o) Records of transformer inspections and oil tests. | Destroy at option. |
| (p) Pole, tower, structure, equipment, and other history records. Note: Life or mortality study data for depreciation purposes shall be retained for the life of the corporation. | For the life of the equipment. |
Mich. Admin. Code R. 460.2569