7.6　Receiving Hopper

General Items

7.6.1　The quality of welding seam on receiving hopper and feeding switch valve cylinder support shall meet the requirements in the design documents.And it shall reach Class IV of 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:10% random check for welding seam.

Check method:observe and check with a magnifier，welding seam gauge and steel rule.

7.6.2　The allowable installation deviation of fixed receiving hopper shall meet the requirements in Table 7.6.2.

Table 7.6.2　Allowable installation deviation of fixed receiving hopper（mm）

7.6.3　The allowable installation deviation of traveling track for movable receiving hopper shall meet the requirements in Table 7.6.3.

Check quantity:full check.

Check method:see Table 7.6.3.

Table 7.6.3　Allowable installation deviation of traveling track for receiving hopper（mm）

7.6.4　The allowable installation deviation of traveling track for unloading valve box in lower part of fixed receiving hopper shall meet the requirements in Table 7.6.4.

Check quantity:full check.

Check method:see Table 7.6.4.

Table 7.6.4　Allowable installation deviation of traveling track for unloading valve box in lower part of fixed receiving hopper（mm）