Appearance

Inspection

Flange

To be checked per Flange Standards

Length and Outside/

Inside Diameters

Dimensions of the pars specified on drawings shall be measured with a measuring tool, unless otherwise specified, the measurement shall be performed in accordance with JIS B0405.

Thread

To be checked with thread gauge

Material Inspection

Inspection shall be performed by Material Certificate supplied by manufacturer and applicable standards, if specified.

Airtight

Inspection

In order to check air-tightness of protection tube or thermowell, airtight inspection shall be performed with specified pressure if specified.

Hydraulic

inspection

In order to check hydraulic of protection tube or thermowell, hydraulic inspection shall be performed with specified pressure if specified.

X-ray inspection

All of the drilled thermowell with longer length than 750 mm shall be inspected on the wall thickness including that of the tip. The others shall be inspected if specified.

Thermowell length

Tolerance of thermowell

wall thickness

Tolerance of tip wall thickness

＜500 mm

±0.3 mm

+0.5 mm

0

≥500 mm

±0.5 mm

Dye Penetrating

Inspection

The welded areas shall be inspected if specified.