Published June 30, 2024 | Version v1
Journal article Open

KEGAGALAN ROUND STEEL LINK CHAIN PADA UNDERTOW SYSTEM PT. HINDOLI MILL SUNGAI LILIN

Authors/Creators

  • 1. Politeknik Negeri Sriwijaya

Description

The use of mining rope on capstan has been replaced with round link chain on undertow system at PT. Hindoli MSL with safety interests. However, in its operations, there are often failures in the form of chain breaks with high frequency. In the investigations carried out, the chain fracture pattern showed fractures due to fatigue loads. The use of SOP operations does not indicate overload where the burden has an assumed life time of 7.1 years. But in practice, failure has occurred before life time ends. The results of the field review, there are external factors that affect the failure, namely abnormal lorry wheels. The lorry wheel does not rotate on the rail but only rubs on the rail which results in a rolling coefficient value of 0.001-0.002 to 0.74 which has an impact on increasing voltage to overload. In addition, there is a load exceeding the SOP under overload voltage which has an impact on shorter life time. In internal factors, there is a chemical composition with a percentage lower than the standard percentage

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References

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