7.5　Charging Bucket

Ⅰ　Dominant Items

7.5.1　The internal quality of butt weld on charging bucket shall meet the requirements in the design documents.And it shall reach Class II of Category B in GB 11345 the current national strandard Method for Manual Ultrasonic Testing and Classification of Testing Results for Ferritic Steel Welds when not specified.

Check quantity:full check for quality certificate documents.20% random check for welding seam is executed on site.

Check method:check the quality certificate documents.Check the ultrasonic inspection report or take inspection.

7.5.2　The pressure test of charging bucket shall meet the requirements in the design documents.And water and compressed air should be used as test medium and they shall meet the requirements in Appendix E when not specified.

Check quantity:full check.

Check method:check the pressure test records.

Ⅱ　General Items

7.5.3　The appearance quality of welding seam on the charging bucket shall meet the requirements in the design documents.And it shall reach ClassⅡof classification standard for welding seam quality specified in GB 50236 the current national standard Code for Construction and Acceptance of Field Equipment，Industrial Pipe Welding Engineering when not specified.

Check quantity:30%random check for welding seam.

Check method:observe or check with a magnifier，welding seam gauge and steel rule.Take penetrant inspection when necessary.

7.5.4　The allowable installation deviation of charging bucket shall meet the requirements in Table 7.5.4.

Check quantity:full check.

Check method:see Table 7.5.4.

Table 7.5.4　Allowable installation deviation of charging bucket（mm）