AMOT 10GEF, Operation And Maintenance Manual, Page: 59 / 80

59
System Integration
OMMG00012 Rev 12 – NOV 2019
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Use a suitable lubricant on the flange bolt threads to achieve the required
coefficient of friction.
•
Ensuring the flange gasket is seated correctly on the flange faces, fit the
remaining washers to each bolt (if fitting), and fit and tighten the
remaining nuts as per the relevant pattern shown in Fig 19, in at least 4
stages to compress the flange gasket uniformly. Note, stages 2 – 5 should
be completed with a suitable calibrated torque wrench.
•
The recommended final torque value should be based upon the bolt
material, the bolt lubricant used, and the material and specification of the
flange gasket used. See relevant flange standards for further information.
Fig 19 Bolt Tightening Pattern