Underwater Facilities Inspections and Assessments at Magnetic Silencing Facilities Naval Station, Charleston, South Carolina

摘要

In August, 1984, an underwater inspection was conducted of facilities of the Magnetic Silencing Facilities at Pier Yankee and Downtown (MSF) at Naval Station Charleston, located in Charleston, South Carolina. The purpose of the inspection was to assess the condition of the submerged portions of structures at those facilities, and to determine the underwater as-built condition of some newly constructed facilities at Pier Yankee. Each facility was inspected by a team of engineer- and technician-divers using visual, tactile and non-destructive testing techniques. A program of ultrasonic testing and coring was used to determine the condition of timber piles. The detailed inspection included cleaning and scraping of selected areas of the piles and documentation of conditions using color photographs. The verticality of exposed instrument sensing tubes was verified, exposed cable runs were visually inspected, and soundings were made of the channel bottom.