6.10　Portfire Device

Ⅰ　Dominant Item

6.10.1　Prior to masonry，hydraulic test for cooling water baffle and cooling water box of furnace body shall be done；the test shall meet design requirements.If no requirements are specified in design，test pressure shall be 1.5times of working pressure.Test pressure is maintained for 10min，and then drops to working pressure and maintains for 30min；it is qualified if no pressure drop and no leakage.

Check quantity:to check all.

Inspection method:to check the test records，to inspect.

6.10.2　Welding quality for furnace body must meet requirements of design technical document；if no requirements in design document；it must meet requirements of IV class in current national standard GB 50236 Code for Construction and Acceptance of Welding Engineering of Field Equipment and Industrial Pipe.

Check quantity:spot check 20% of weld length.

Inspection method:to inspect，to check weld seam with gauge.

6.10.3　Welding material and base metal shall match and shall meet requirements of design technical document.Welding material shall be dried and stored according to product instructions and welding process document prior to usage.

Check quantity:to check all.

Inspection method:to check quality certificate and drying records.

Ⅱ　General Item

6.10.4　Tolerance for installation of portfire device shall meet requirements in Table 6.10.4.

Check quantity:to check all.

Inspection method:see Table 6.10.4.