Method and apparatus for assembling or disassembling an installation present on a seabed
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 17, 2001
Grant Date -
N/A
app pub date -
Jul 21, 1997
filing date -
Oct 25, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a method for assembling and disassembling an installation present on a seabed, for instance a pipeline lying on a seabed, wherein components, for instance pipe flanges, are mutually attached by means of nut and bolt connections and the nut and bolt connections are released and/or secured by means of a wrench. Nut and bolt connections are herein released by divers using a wrench. This is heavy and difficult work. It is impossible for divers to operate at considerable depth. Complicated and very costly pipeline connections are then applied which can be released and secured without divers. The invention has for its object to reduce the stated drawbacks of the known method. To this end at least one wrench is used, of which an engagement cup for engaging a nut and/or a bolt head in axial direction of a nut and bolt connection for manipulating is displaceable relative to a cup carrier counter to spring action.
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