南海石化球罐项目检测方案与工艺中英文对照

南海石化球罐项目检测方案与工艺中英文对照内容摘要：

e well, and can accord with the regulation of responding standard, all the puter instruments should be used in the usefullife. 2)材料；该工程全部采用 AGFA C7型胶片，γ射线检测使用 300*100*， X射线使用 300*100*，选用天津Ⅲ型套药。 Material: In the whole project, we use AGFA C7 type films, use 300*100* screen when adoptγ source, use 300*100* screen when adopt xray, use the medicine of Tianjin Ⅲ . 透照布置 Peration disposal 一次透照长度 260mm，塔接长度两端各为 20mm采用磁性暗袋，标记带标记铅字。 Oneoff peration length is 260mm, 象质计及放置位置象质计 and lay position 1)选用 Fe6/12Ⅱ号象质计。 Use Fe6/12 Ⅱ 2)球罐外壁的赤道带上每隔 90176。 放置一个象质计。 上下极带环焊缝方向每隔 90176。 放置一个象质计。 下极板内壁部位至少放置二个象质计，并在此位置做对比实验。 Lay a on the equator of the outerwall of spherical tank per interval of 90176。 . Lay a on the circle direction of the polar per interval of 90176。 . Lay at least two on the location of innerwall of below polar and do contrast experiment. 3)象质计应置于被检焊缝上，且钢丝与被检焊缝垂直，放置位置在胶片有效长度的 1/4处，细丝朝外，当象质计处于球罐外壁时，在其最粗丝右下角或左下角放置 F标记，像质计应尽可能至于射源侧。 should be put on the inspected weld, and the steel wire should be vertical with the inspected weld, the lay location should be 1/4 of the film length, the filament expose to the outer. When is on the outerwall of the spherical tank, lay F on the rightbelow or the leftbelow corner of the coarse thread, the should close up to the source side the whole way. Undefinition of geometry 对于 r射线全景暴光，无论单源还是双源都能满足 JB473094 标准 .采用局部 x 射线或γ射线透照返修片或重拍片时，为保证几何不清楚，焦距不得小于 600mm. 9 For rray panorama exposure, both the single source and double source can meet with the JB473094 standards, and when adopt local xray or γ ray do inspection, the focus can’ t be less than 600mm in order to ensure the undefinition of the geometry. 定位标记，识别标记，划线和布片 Orientation mark, identification mark, lineation and disposal of the film 1)定位标记：透照时焊缝透照部位应有塔接标记↑，塔接标记起确定有效评定长度的作用。 中心全景暴光时，定位标记置 于射线源内外侧均可。 单壁单影单张透照时，定位标记应置于射线源侧。 Orientation mark: There should have mark of ↑ on the peration location of the weld, the mark can assess the effective length. When use central panorama exposure, orientation mark can be put on both the inner or outer side of the source. When do single peration with single wall single image, the orientation should put beside the source. 2)识别标记：识别标记必须有工程（产品）编号，焊缝编号，底片号，球罐壁厚，焊工号，年月日等标记，铅字距离焊缝边缘至少 5mm（识别标记见下图）： Identification mark: The identification mark must include the project No, weld No, negative No, thickness of spherical tank, welder No, date and else. The distance between the letter and the edge of the weld should be at least of 5mm(see identification mark as follows) 年y e a r 月m o n t h 日d a t e工程编号P r o j e c t N o .焊缝片号S e a m N o .返修号D e f e c t s N o .厚度T h i n c k焊工号W e l d e r N o . 10 说明：由于是中心全景暴光，底片之间 均有塔接，每张焊缝上的底片只要有一张标记是完整的，就能保证信息识别，所以要求每条焊缝的第一张底片的标识的标记是完整的，其它底片可以没有年，月，日，及中心标记，厚度。 但补片及返修片应标记齐全。 Explain: As there is interface between the negatives when use central panorama exposure, and if there is one mark of the negatives on each weld is intact, the information can be identified out。 so the mark of the first negative must be intact, the other negatives can has no date, center or thickness mark. But repair and makeup films should record pletely. 3)划线在工件上对每张底片的布片片位用记号笔进行划线，并标记出每张底片的编号，标线应垂直标记在焊缝边缘，外侧间 隔 260mm,内侧长度按 260*[（ RT） /R]。 R为球罐外径；T为壁厚。 Lineation: Mark on the film location of each negative with marking pen, and sign the No of each negative. The line should be vertical with the edge of the weld, the interval of outboard should be 260mm, the inboard length can get according to the equation of 260*[（ RT） /R]. R means outside diameter。 T means the thickness of the wall. 4)布片：焊缝进行射线检测前，按图样和焊缝排版图对受检部位标记，并画布片示意图。 焊缝的底片顺序号宜从上至下为 1， 2， 3„„，环焊缝的底片顺序号宜从 0176。 → 90176。 → 180176。 → 270176。 → 0176。 为 1， 2， 3„→。 胶片在暴光期间应在受检区域上固定稳妥，必要时另外附加磁铁 固定。 球罐全景暴光检验前应到气象部门咨询气候情况，如遇阴雨天气必须进行检测时，暗盒外面套朔料袋进行保护，上下方向布片时，暗盒的帽盖开口部位朝下。 （该工程采用带磁铁的标记带） Disposal of the films: Mark the inspected location according to the drawings and printed drawings before RT inspection, and give a sketch map. The serial No of the negatives for weld can be made start from 1, 2, 3„„ , it can be start from 0176。 → 90176。 → 180176。 → 270176。 → 0176。 为 1， 2， 3„→ for circle weld. The films should be fixed hardly in the inspected area during exposure time, append mag when necessary. Require about the weather before panorama exposure inspection on the spherical tank, pull on a plastic bag outer the cassette when meet with overcast and rainy. When dispose the films in lengthways, the peristome of the hatbox of the cassette should be gadarene.( Use the marking bag with mag in this project) ；散射线的屏蔽 Selection on the exposure parameter。 shied on the dispread radial 1)暴光参数的选择；射线检测时暴光时间使用专用暴光尺或计算公式确定，因影响γ射线暴光时间的因素较多，以上仅作估算，在罐体下部放上实验片 34张，暴光至计算值 90％ 11 时，取下一片，在规定条件下冲洗，湿片测黑度，当黑度不足时继续暴光，直到母材处实验片黑度均在 ； X射线检测根据焦距透照厚度及暴光曲线确定，且管电压不应超过射线机额定电压的 90％，暴光量不应低于。 Selection on the exposure parameter: The exposure time can be confirmed by exposureruler or calculational equation. Because there are many factors to affect gamma expose, so give a rough estimate on the exposure time. Dispose 34 films at the bottom of the tank, take down one film when expose for 90% of the exposure time, develop under the regulated condition。 measure the density of the waterish film, continue to expose when the density is deficient until it more than . The parameter of Xray RT can be confirmed according to the peration thickness of the established focus and the exposure curve, the source intensity shouldn’ t exceed the 90% of the rating voltage, the exposure quantity shouldn’ t be less than . 2)散射线的屏蔽；罐下部采用 厚铅背衬进行散射线屏蔽。 Shied on the dispread radial: Use the backing letter with thickness of at the bottom of the tank to shield the dispread radial. 暗室处理 Disposal in darkroom 1)对操作人员的要求：暗室操作人员应经专门人员培训，掌握暗室操作的基本知识和技能，认真详细的做好暗。