5.9 Installation of Shell
Ⅰ Dominant Items
5.9.1 The deformation and peeling of paint on steel element due to handling，piling and hoisting shall be corrected and repaired.
Check quantity:10% random check for elements of same type and at least 4 pieces.
Check method:visual check or pull a line and check with a steel rule.
5.9.2 The 40kPa vacuum test shall be taken for welding seam on bottom plate and there is no leakage when the bottom plate of hot-blast stove is less than 20mm thick before bricklaying.
Check quantity:full check.
Check method:check the vacuum test record.
5.9.3 The pressure test for water-cooled beam shall meet the requirements in the design documents.And it shall meet the requirements in current national standard GB 50235 Code for Cconstruction and Acceptance of Industrial Metallic Piping.
Check quantity:full check.
Check method:check the pressure test record.
Ⅱ General Items
5.9.4 When paving dry sand on the foundation of hot-blast stove，the bottom plate of hot-blast stove shall be evenly contacted with the dry sand and the contact area shall be larger than 60%.
Check quantity:full check.
Check method:visual check.
5.9.5 The allowable installation deviation of blast furnace shell and bottom water-cooled beam shall meet the requirements in Table 5.9.5.
Check quantity:full check.
Check method:see Table 5.9.5.
Table 5.9.5 Allowable installation deviation of blast furnace body and bottom water-cooled beam（mm）
Table 5.9.5（Continued）
Note:D refers to flange of top flange；D1 refers to diameter of bottom plate；D2 refers to diameter of the circle consisting of water-cooled supporting beams；D3 refers to the diameter of shell steel plate.
H refers to elevation of top flange；H1 refers to elevation of shell steel plate；h refers to elevation of furnace bottom；t refers to plate thickness.
5.9.6 The allowable installation deviation of hot-blast stove shell shall meet the requirements in Table 5.9.6.
Check quantity:full check.
Check method:see Table 5.9.6.
Table 5.9.6 Allowable installation deviation of hot-blast stove shell（mm）
Table 5.9.6（Continued）
Note:T refers to thickness of stove steel plate；D refers to diameter of hot-blast stove；H refers to height of hot-blast stove.
5.9.7 The allowable installation deviation for shell of dust remover，scrubber，venturi scrubber and dehydrater shall meet the requirements in Table 5.9.7.
Check quantity:full check.
Check method:see Table 5.9.7.
Table 5.9.7 Allowable installation deviation for shell of dust remover，scrubber，venturi scrubber and dehydrater（mm）
Note:D refers to diameter of steel plate ring on shell；t refers to thickness of shell steel plate；H refers to height of equipment from venturi throat to bottom.