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采用θ法修正方程外推主汽管道蠕变寿命 ,预测精度较高。对娘子关电厂 2号炉在役主汽管道的蠕胀测量表明 ,其蠕胀速度明显加快 ,证明了应用θ法预测寿命的实用性。
The θ method is used to extrapolate the creep life of the main steam pipe, and the prediction accuracy is high. The creep-swell measurement of the main steam pipe in service at No.2 furnace of Niangziguan Power Plant shows that the creeping rate is obviously accelerated, which proves the practicability of using θ method to predict the service life.