DERRICK LOAD TEST METHOD

摘要

PURPOSE: A derik load testing method is provided to efficiently perform the verification of a winch unit, a dead line anchor, a traveling block, and a top drive etc. even structural intensity of a drill floor and an auxiliary structure. CONSTITUTION: A derik load testing method is as follows. A derik(310) is installed on a drill floor(220) of a marine structure. A drill line for testing a derik load is connected to the winch unit of one side of the drill floor from a deadline anchor(221) of the other side of the drill floor. A lifting structure of the derik is connected to between a main deck arranged in the lower part of the drill floor and a travelling block. A main measurement value measured by a load cell installed in the deadline anchor and an auxiliary measurement value measured by the load cell comprised in the lifting structure are compared. Whether or not the main measurement value or the auxiliary measurement value has a value within a preset range is verified.