The spectrum provides reliable basis for calculating stresses and crack propagation life of thermal variable amplitude fatigue and for carrying out safety assessment for the nozzle region adjacent to the block coke valve of a coking tower.

• 该谱为进一步计算焦碳塔堵焦阀接管部位的应力及变幅值热疲劳裂纹扩展寿命和安全评定提供了可靠的载荷依据