介绍了石油库输油管路系统因温度变化、热应力、水击和腐蚀所造成的管路损坏的原因，阐述了预防事故发生的方法。

Impacts of temperature change, heat stress, soaking and corrosion on pipe damage are presented. Measures to prevent accidents are also introduced.

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管路流速太低或太高都可能损坏阀门内部构件，缩短阀门使用寿命。

Either too low a line velocity or too high a velocity can damage valve internals and shorten valve life.

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如果节流较小，将因此产生更高的压降将可能导致空穴现象或超快流速，从而导致噪音太高，振动剧烈，可能损坏阀门或相邻的管路。

Closer throttling, creating higher pressure drops may cause cavitation or excessive velocities which could cause high noise levels, vibration and possible damage to the valve or adjacent piping.

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