SCHEDULE FOR CALIBRATION OF VARIOUS GAUGES
AND TESTING EQUIPMENTS IN THE CONCRETE SLEEPER PLANT
| S.No. | Equipment | Frequency |
|---|---|---|
| 1 | 15 cm concrete cube testing machine (2000 KN capacity) | Once in 3 months |
| 2 | Cement mortar cube testing machine (500 KN capacity) | Once in 6 months |
| 3 | Sleeper Static Bend Test Machine (500 KN capacity) | Once in 3 months or after testing 250 sleepers, whichever is earlier. |
| 4 | Pre tensioning Jacks (500 KN capacity) | Once a month or after casting 5000 sleepers whichever is earlier. |
| 5 | Pre-tensioning load cell | -do- |
| 6 | Concrete Beam Testing Machine (100 KN capacity) | Once in 6 months |
| 7 | Aggregate weight batcher | Once every week or after casting 2000 sleepers, whichever is earlier. |
| 8 | Cement weighing equipment | -do- |
| 9 | Water Meter | -do- |
| 10 | Master gauges for checking correctness of dimension measuring Gauges | Once in 6 months |
| 11 | Dimension checking gauges | Once every 15 days or after inspecting 5000 sleepers, whichever is earlier |
| 12 | Proving rings (2000 KN, 500 KN and 100 KN capacity) | Once in 18 months |
| 13 | Weights & Measures | Once in two years by Weights & Measures Department |
| 14 | Tachometer | Once a year |
Note:
1. The items referred at S.No.1 to 6 above should be calibrated by proving rings in the sleeper plant itself.
2. The items referred at S.No.7 & 8 should be calibrated by dead weights and item at S.No.9 by measuring cans which should be available in the plant.
3. The proving rings should be got calibrated from a reputed organization like the IITs, NCCBM or NPL etc.
4. The record of calibration of all the above equipments should be maintained in a manner that previous records can be easily connected. 5. The calibration can be done more frequently at the discretion of the Inspecting Official.
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