Valves and flanged joints are common sources of operational leakage when installation, maintenance or bolt loading is inconsistent. A disciplined integrity programme helps protect containment while reducing unplanned intervention and production disruption.
Inspect Before Intervention
Condition, service history, operating pressure and observed leakage guide the maintenance plan. Valve function, seat performance, stem condition and flange alignment should be assessed before deciding on repair, testing or replacement.
Control the Flanged Joint
Reliable sealing depends on clean contact surfaces, correct alignment, a suitable gasket and controlled bolt load. Joint components should be verified before assembly, and tightening must follow an approved sequence.
Apply Accurate Bolt Load
Torqueing and bolt tensioning methods should be selected for the joint design and field conditions. Hot bolting requires an engineered procedure, clear limits and strict safety controls because fasteners are being replaced or adjusted on an operating system.
Record and Verify the Work
Testing, inspection and close-out records provide evidence that the intervention met its requirements. Bethel Engineering supports valve installation, testing and maintenance together with leak control, hot bolting and flange-management services.