| 摘要 |
A loading arm assembly of the type which includes a generally vertical tubular loading riser having a tubular swivel joint on the upper end portion thereof to which is connected one end of a tubular loading arm, the tubular loading arm being adapted to revolve about a generally horizontal axis and to revolve about a generally vertical axis via the swivel joint, with the loading arm assembly being further provided with biasing apparatus for continuously urging the revolution of the loading arm upwardly about the generally horizontal axis. The loading arm assembly further includes a loading arm keeper which comprises a rigid arm having first and second end portions, with a clamp on the first end portion of the rigid arm for securing the first end portion of the rigid arm to the generally vertical loading riser with the rigid arm extending outwardly from the pipe loading riser, and with a loading arm retainer on the second end portion of the rigid arm for selectively engaging the tubular loading arm so as to resist the upward revolution of the tubular loading arm about the generally horizontal axis responsive to the biasing apparatus, and to prevent revolution of the tubular loading arm about the generally vertical axis.
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