Underwater Inspection and Recommendations for the Brighton Dam Acoustic Facility, Naval Surface Weapons Center, Brighton, Maryland,
Abstract
The underwater inspection of the Brighton Dam Acoustic Facility barge was conducted on 1 November 1984. Analysis of NSWC barge freeboard measurements and the inspection data show: (1) a safe barge freeboard has been maintained for the past seven years with little change in freeboard observed: (2) the 44 'p' pontoons supporting the instrument house are in good structural condition with some pitting and breaching of the metal near the waterline; and (3) pitting and breaching are not critical because the pontoons are foam filled. Wood beams between the pontoons and instrument house are in good condition. It is concluded: (a) The facility is in good condition and should continue to give service at current rates of maintenance funding. (b) Pontoon replacement is not needed and not recommended. (c) Replacement of the barge is not recommended. (d) The receiving float could be replaced at a cost of approximately $20 K to reduce the draft of the pontoons by 2 feet. This would reduce the impact of low lake levels. (e) The crane rails on the barge and shore cannot be upgraded to 3,000 pounds capacity without significant modifications. (f) Monthly barge freeboard measurements should be taken and a swim-by inspection of the underwater portions made every three years.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1985
- Accession Number
- ADA168458
Entities
People
- James Hansen
- William N. Seelig
Organizations
- Naval Facilities Engineering Systems Command