| 摘要 |
PROBLEM TO BE SOLVED: To provide a thickness estimation method and a degradation diagnostic method for a steel chimney inner lining, enabling the thickness of the steel chimney inner lining to be accurately estimated and the degradation in the steel chimney inner lining to be accurately diagnosed, respectively even when smoke passes through the chimney.SOLUTION: The thickness estimation method for a steel chimney inner lining includes: a theoretical formula construction step of constructing a theoretical formula defining a relationship between a lining thickness and a steel shell temperature; a lining thickness/steel shell temperature actually measuring step of acquiring the lining thickness by coring at a plurality of places of the steel chimney 1 from the outside of the chimney, and actually measuring a steel shell temperature at a position of the coring; a corrected theoretical formula acquiring step of acquiring a corrected theoretical formula by correcting the theoretical formula on the basis of the acquired actual lining thickness and steel shell temperature; a steel shell temperature actually measuring step of actually measuring steel shell temperature at a prescribed height-direction position of the steel chimney; and a lining thickness estimating step of, on the basis of the actually measured steel shell temperature and the corrected theoretical formula, estimating the lining thickness at the position. |
