1d 01 eckert slide show
Post on 13-Apr-2018
216 Views
Preview:
TRANSCRIPT
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 1/29
CONVENTIONAL BARGE ANCHORING
TECHNIQUES AND AVOIDANCE METHODS
Don Eckert
Lead Equipment EngineerGlobal Industries Offshore, LLC
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 2/29
ABSTRACT
This report reviews the anchoring system components for
conventional pipelay barges. It also details how barges use
their anchoring systems to avoid biologically sensitive
seafloor areas while laying flowlines.
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 3/29
TOPICS
Anchoring System Components
• Typical conventional barges & their sizes
• Towing tugs
• Winches
• Tug
• Barge
• Anchor wires
• Fairleaders
• Anchor types
• Flipper
• Stockless
• Anchor holding capacity – sand
• Anchor holding capacity – clay
• Pendant wires
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 4/29
TOPICS (continued)
• Pendant buoys
• Horizontal can
• Vertical can
• Complete pendant buoy, wire, anchor
• Midline buoys
• Under-running sheave
• Animated standard barge anchoring procedure
• Animated avoidance of biologically sensitive areas
• Contingencies
• Anchor wire parting
• Pendant wire parting
• Recommendations and conclusion
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 5/29
TYPICAL CONVENTIONAL BARGES & THEIR SIZES
GP-37
Shallow water lay barge (0–225 fsw)
Dimensions – 188’ x 60’ x 14’
Eight-point anchor system
SEA CONTRUCTOR
Intermediate water depth lay barge (226–600 fsw)Dimensions – 250’ x 72’ x 16’
Seven-point anchor system
CHEROKEE
Intermediate to deep water depth lay barge (226–1000 fsw)
DIMENSIONS – 387’ x 100’ x 25’
Eight-point anchor system
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 6/29
GP-37
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 7/29
SEA CONSTRUCTOR
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 8/29
CHEROKEE
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 9/29
TOWING TUGS
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 10/29
TUG WINCH
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 11/29
BARGE WINCH
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 12/29
ANCHOR WIRE
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 13/29
BARGE FAIRLEADER
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 14/29
ANCHOR TYPES
• FLIPPER
• STOCKLESS
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 15/29
FLIPPER ANCHORS
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 16/29
STOCKLESS ANCHORS
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 17/29
ANCHOR HOLDING CAPACITY – SAND
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 18/29
ANCHOR HOLDING CAPACITY – CLAY
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 19/29
PENDANT WIRES
PENDANT BUOYS
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 20/29
PENDANT BUOYS
TYPE: HORIZONTAL CAN
PENDANT BUOYS
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 21/29
PENDANT BUOYS
TYPE: VERTICAL CAN
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 22/29
COMPLETE PENDANT BUOY, WIRE, ANCHOR
MIDLINE BUOYS
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 23/29
MIDLINE BUOYS
UNDER RUNNING SHEAVE
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 24/29
UNDER-RUNNING SHEAVE
ANIMATED STANDARD BARGE ANCHORING
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 25/29
ANIMATED STANDARD BARGE ANCHORING
PROCEDURE
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 26/29
ANIMATED AVOIDANCE OF BIOLOGICALLY
SENSITIVE AREAS
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 27/29
ANIMATED AVOIDANCE OF BIOLOGICALLY
SENSITIVE AREAS WITH 2 TUGS
7/26/2019 1D 01 Eckert Slide Show
http://slidepdf.com/reader/full/1d-01-eckert-slide-show 28/29
CONTINGENCIES
••
ANCHOR WIRE PARTINGANCHOR WIRE PARTING
•• PENDANT WIRE PARTINGPENDANT WIRE PARTING
RECOMMENDATIONS AND
top related