OCP SEACON Allied Marine Crane Acceptance Tests.
Abstract
Tracor Marine furnished and installed a new gantry crane and power pack for the OCP SEACON. No deficiencies were observed in the factory tests, although several tests were not conducted that were required to ascertain compliance with the specification; those tests were subsequently conducted during the field tests. The Allied Marine Crane met or exceeded all the acceptance test criteria with the following exceptions: Noise Level 85dBa (Section 3.5.4.1): 87-92 dBa; Minimum Hook Speed Under Rated Load of 30 fpm (Section 3.2.2): 20 fpm. There was noticeable vibration throughout the deck and simultaneous groaning when luffing with the rated load (44,000 pounds); and a significant drop in engine rpm when a heavy lift was initiated. At the rated load, the rpm's dropped from 1800 to 1500. At the proof load (54,000 pounds), the rpm's dropped to 1100. Also, a misalignment of the welded house break fixture on the pedestal was noted relative to the mating lock on the rotating superstructure by 1 deg or so when the crane is in a force and aft position, or at right angles to the outerline of the access hole (and the gantry). Keywords: Crane; and Barge.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 11, 1986
- Accession Number
- ADA168653