Controlled Blasting

The information provided in this section will provide an introduction to planning and implementing underwater blasting operations. A number of factors that contribute to conducting a successful blasting operation are discussed below. However, underwater blasting must be conducted in accordance with the procedures discussed in the following technical publications:

• NAVSEA SW061 -AA-MMA-010, Technical Manual for Use of Explosives in Underwater Salvage

• NAVSEA OP 5, Vol 1, Rev A, Ammunition and Explosives Ashore: Safety Regulations for Handling, Storing, Production, Renovation, and Shipping

• NAVSEA SW060-AA-MM A-010, Demolition Materials

UCT blasting operations can be classified into one of the following categories:

• Obstacle removal: steel, concrete, wood - Removing obstacles such as coral and rock outcroppings may be required for cable or pipeline installations.

• Trenching - Trenching can be used for burying pipeline and cables when other methods are impractical.

• Ramping - Ramping involves removing a cliff to provide a smoother transition for the cable or pipeline.

• Demolition - Demolition includes cutting and removing bridge piers, pilings, and various underwater foundations.

• Excavation - Excavations might include deepening or widening shipping channels.

2.7.1 Planning

Underwater or surface blasting is planned and executed only by properly trained UCT personnel.

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