Portsmouth Naval Shipyard Underwater Ledge Removal - Beginning June 3, 2021
As part of Portsmouth Naval Shipyard’s Dry Dock #1 Super Flood Basin construction, it is necessary to excavate a portion of underwater ledge in order to provide a deep enough basin capable of accommodating a modern-day fast attack submarine. The construction of a super flood basin at the head of Dry Dock #1 will create a lock system that significantly reduces the amount of calculated risk incurred each time a submarine is brought in or out of Dry Dock #1.
Underwater explosives will be used as a means for bedrock excavation and the safe removal of the underwater ledge. This is a controlled evolution with safety as the top priority.
Personnel safety will be the controlling consideration in all decisions involving blasting activities. In accordance with standard/industry construction practices, the contractor has incorporated a number of safety initiatives to ensure life, property, and the environment are not endangered.
The approved Safety Plan for this project is developed in harmony with all relevant laws and regulations, engineered specifications, industry standards and guidelines, regarding the safety and security of handling and using explosive materials. In addition, the project draws on the drilling and blasting team’s extensive experience.
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PNSY Blasting Operations Fact Sheet | 133.27 KB |