PDC Bit Dull Grading vs Riser Safety Margin Usage & Stats

This app is a tool for application on deepwater drilling operations (Oil & Gas). About Riser Safety Margin: The slight increase in mud weight needed to offset the loss in hydrostatic pressure when the riser is disconnected from the bop and the hydrostatic pressure of the mud to the mud line is replaced by the hydrostatic of the column of sea water. Emergency disconnection can occur in blackout condition, failure of the dynamic positioning system, etc. DISCLAIMER: These tools & materials are provided 'as is' without warranties of any kind, express or implied. Please verify the tools provided by this application by yourself before you use them. Ensure you understand the impact of using these tools. Any use you choose to make of these tools & materials is undertaken by you entirely at you own risk. Thanks