射线检验程序

the penetrameter(s).

当不能将像质计置于源侧时，像质计应置在与被检工件接触的胶片侧，在像质计旁边或上面放一个铅字“F”，铅字“F”的高度应不低于像质计上的文字高度。

Radiography shall be performed with a technique of sufficient sensitivity to display the penetrameter image, which are essential indications of the image quality of the radiograph. The radiographs shall also display the identifying number and letters. Wire type IQI are used the equivalent wire diameter is given in Table 1.

像质计体现了射线拍照的质量，所以要采用那种可以保证足够灵敏度（获得要求的像质计指示）的射线透照方式。胶片上也应显示像质计的标记字母和数字。可使用表1作为等同于相应的线型像质计。

JB /T 7902-1999 Wire Type IQI JB/T 7902-1999 线型像质计

The IQI provides a guide to the quality of radiographs produced and shall be appropriately chosen from one of the types recommended in JB /T7902-1999, as an alternative for the ASME penetrameter.

像质计体现了射线拍照的质量，可以从JB/T 7902-1999所推荐的类型中选取适合的像质计，作为ASME像质剂的替代。

Source Side Pentrameter(s). 像质计置于源侧

The penetrameter(s) shall be placed on the source side of the part being examined, except in the condition described below.

除了下述情况外，像质计应当放置在被检工件的源侧。

Film Side Pentrameter(s). 像质计置于胶片侧

Where inaccessibility prevents hand placing the penetrameter(s) on the source side it shall be place on the film side in contact with the part being examined. A lead letter 'F' at least as high as the penetrameter identification number(s) shall be placed adjacent to or on the penetrameter(s)

当不能将像质计置于源侧时，像质计应置在与被检工件接触的胶片侧，在像质计旁边或上面放一个铅字“F”，铅字“F”的高度应不低于像质计上的文字高度。

Radiography shall be performed with a technique of sufficient sensitivity to display the penetrameter image, which are essential indications of the image quality of the radiograph. The radiographs shall also display the identifying number and letters. The