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NIPPON KAIJI KYOKAI |
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CERTIFICATE |
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No.FE 93 OS - 02098 |
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Date 8 February 1993 |
THIS IS TO CERTIFY that I, the undersigned
Surveyor to the Nippon Kaiji Kyokai , Osaka , did at the request of Messrs. Navatech Co., Ltd., Kobe, Japan, attend at Minato Seiki Iron Works Co., Ltd., Takatsuki, Japan, on 8 February 1993 in order to wittness the breaking test on
LOCKING AND SEALING DEVICE FOR FREIGHT CONTAINER DOORS
TYPE "NAVALOCK MK V"
Three sets of NAVALOCK MK V locking and sealing devices were selected at random, Verified against the manufacturers drawing No.846-3391 and tested in accordance with their proposed method and found as follows:-
DESTRUCTIVE TESTS CARRIED OUT
- Tensile test to the point of breaking the lock
- Shearing test of locking pin
- Extrusion test of locking pin from It's locking socket
The following results were obtained in the presence of the undersigned:-
| Test Item |
Sample Lock No.1 |
No.2 |
No.3 |
| Tensile test |
3,560 kg |
4,100 kg |
3,540 kg |
| Shearing test |
5,360 kg |
5,440 kg |
5,460 kg |
| Extrusion test |
2,270 kg |
2,640 kg |
2,460 kg |
| Tensile test |
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All samples failed at the locking guide bracket |
| Shearing test |
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All pins sheared |
| Extrusion test |
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All locking rings failed |
2. 10. 100.000
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