Field Modification Crosses Reinforcement or an Internal Component
Stop before cutting. Identify the reinforcement, turning vane, tie rod, damper, liner system, sensor, or other internal component and verify an approved modification or replacement.
The field cut lands through a reinforcing angle and a turning-vane rail. I marked the opening and checked the shop detail-do you want the opening moved or the fitting remade?
Watch out
Do not cut through reinforcement, tie rods, turning vanes, damper parts, sensors, or listed assemblies to make a field opening fit.
Check
Check both sides and inside the duct where safe and accessible.
Identify the component and its purpose from current drawings, shop details, or manufacturer documents.
Mark the proposed opening or trim and photograph the conflict.
Get direction before removing, relocating, notching, or weakening the component.
Steps
Check both sides and inside the duct where safe and accessible.
Identify the component and its purpose from current drawings, shop details, or manufacturer documents.
Mark the proposed opening or trim and photograph the conflict.
Get direction before removing, relocating, notching, or weakening the component.
Say this to your foreman
The field cut lands through a reinforcing angle and a turning-vane rail. I marked the opening and checked the shop detail-do you want the opening moved or the fitting remade?