- •Introduction to the Anchor Handling Course
- •Technical Specifications:
- •Winch Layout:
- •Power Settings / Bollard Pull
- •All operations on board must be performed in accordance with Company Procedures.
- •Risk Assessment
- •Planning
- •Planning:
- •Goal, example:
- •What to do:
- •Electrical winches
- •Winch operation
- •General Arrangement
- •A/H-Drum at full Capacity
- •Over speed
- •Water brake
- •Band brake
- •QUICK & Full Release
- •Hydraulic Winches
- •Lay out (B-type)
- •Hydraulic winch, “B-type”
- •TOWCON
- •Instruction for use of Wire Drums
- •Changing of Chain Wheels (Wildcats / Chain Lifter)
- •TRIPLEX - SHARK JAW SYSTEM.
- •Operation
- •Maintenance and inspections
- •Safety
- •2. OPERATION:
- •QUICK RELEASE:
- •EMERGENCY RELEASE:
- •CONTROL PANEL
- •Marks for Locked on Hinge Link
- •2.2- OPERATION OF THE "JAW IN POSITION ACCEPT" LEVER:
- •2.3 OPERATION OF THE CONTROL PANEL AT EMERGENCY POWER.
- •3. ELECTRIC AND HYDRAULIC POWER SYSTEM.
- •3. 1. ARRANGEMENT OF SYSTEM.
- •3.2. FUNCTIONING OF QUICK RELEASE - JAWS ONLY.
- •3.3. FUNCTIONING OF EMERGENCY RELEASE
- •4.2 Test without Load.
- •4.3 Test with Load.
- •5. General Maintenance
- •5.1 Accumulators Depressurising
- •5.2 Shark Jaw Unit
- •5.3 Guide Pins Units
- •5.4 Hydraulic System
- •5.5 Electric System
- •6. Control Measurements / Adjustments.
- •6.2 Adjustment of inductive proximity switches on lock cylinders.
- •6.3 Adjustment of Pressure Switches for Lock Pressure.
- •7. Test Program – Periodical Control
- •7.2 Checking List – Periodic Control Mechanical / Hydraulic.
- •7.3 Checking List – Periodic Control Electrical
- •7.4 Testing without Load – Yearly Testing.
- •7.5 Load Test – Emergency Release – 5 Year Control.
- •“Mark on line !”
- •“Double set of Jaws, Pins and Wire lifter”
- •View from the bridge.
- •“JAW READY FOR OPERATION”
- •“JAW LOCK POSITION ACCEPTED”
- •KARM FORK – SHARK JAW SYSTEM.
- •Wire and chain Stopper
- •Inserts for KARM FORK
- •Martensite:
- •Recommendations:
- •1. THE BASIC ELEMENTS OF STEEL WIRE ROPE
- •2. STEEL WIRE ROPE CONSTRUCTIONS
- •3. SPECIAL STEEL WIRE ROPES
- •4. USE OF STEEL WIRE ROPE
- •5. SELECTING THE RIGHT STEEL WIRE ROPE
- •6. ORDERING STEEL WIRE ROPE
- •7. STEEL WIRE ROPE TOLERANCES
- •8. HANDLING, INSPECTION AND INSTALLATION
- •9. INSPECTION AND MAINTENANCE
- •10. ELONGATION AND PRE-STRETCHING
- •11. OPERATING TEMPERATURES
- •12. MARTENSITE FORMATION
- •13. END TERMINATIONS
- •14. SOCKETING (WIRELOCK)
- •15. DRUM CAPACITY
- •16. CLASSIFICATION AND USE OF STEEL WIRE ROPE
- •17. ROPES
- •18. CHAINS AND LIFTING COMPONENTS
- •19. TECHNICAL CONVERSION TABLES
- •SWIVEL
- •MoorLink Swivel
- •Pin Extractor
- •Socket Bench
- •Chains and Fittings
- •STUD LINK MOORING CHAIN
- •OPEN LINK MOORING CHAIN
- •KENTER JOINING LINKS
- •PEAR SHAPE ANCHOR CONNECTING LINK
- •DETACHABLE CONNECTING LINK
- •D’ TYPE JOINING SHACKLES
- •‘D’ TYPE ANCHOR SHACKLES
- •SHACKLES
- •JAW & JAW SWIVELS
- •BOW & EYE SWIVELS
- •MOORING RINGS
- •FISH PLATES
- •PELICAN HOOKS
- •SLIP HOOKS
- •‘J’ CHASERS
- •PERMANENT CHASERS
- •DETACHABLE PERMANENT CHAIN CHASERS
- •PERMANENT WIRE CHASERS
- •‘J’ LOCK CHAIN CHASERS
- •The way to break the anchor loose of the bottom is therefore:
- •Table of contents
- •Introduction
- •General
- •Mooring systems
- •Mooring components
- •History of drag embedment anchors
- •Characteristics of anchor types
- •History of vryhof anchor designs
- •Criteria for anchor holding capacity
- •Theory
- •Criteria for good anchor design
- •Aspects of soil mechanics in anchor design
- •Soil classification
- •Fluke/shank angle
- •Fluke area
- •Strength of an anchor design
- •Anchor loads and safety factors
- •Anchor behaviour in the soil
- •Proof loads for high holding power anchors
- •Anchor tests
- •Soil table
- •Practice
- •Introduction
- •Soil survey
- •Pile or anchor
- •Setting the fluke/shank angle
- •Connecting a swivel to the Stevpris anchor
- •Chasers
- •Chaser types
- •Stevpris installation
- •Laying anchors
- •Retrieving anchors
- •Anchor orientation
- •Decking the Stevpris anchor
- •What not to do!
- •Racking the Stevpris
- •Deploying Stevpris from the anchor rack
- •Boarding the anchor in deep water
- •Ballast In fluke
- •Chaser equilibrium
- •Deployment for permanent moorings
- •Piggy-backing
- •Piggy-back methods
- •Stevmanta VLA installation
- •Installation procedure
- •Stevmanta retrieval
- •Double line installation procedure
- •Stevmanta retrieval
- •Double line installation with Stevtensioner
- •The Stevtensioner
- •The working principle of the tensioner
- •Measurement of the tensions applied
- •Umbilical cable and measuring pin
- •Break - link
- •Duration of pretensioning anchors and piles
- •Handling the Stevtensioner
- •General tensioning procedures
- •Hook-up
- •Lowering
- •Tensioning mode
- •Retrieving
- •Supply vessels/anchor handling vessels
- •Product data
- •Introduction
- •Dimensions of vryhof anchor types
- •Proof load test for HHP anchors (US units)
- •Dimensions of vryhof tensioners
- •Proof load/break load of chains (in US units)
- •Chain components and forerunners
- •Connecting links
- •Conversion table
- •Mooring line catenary
- •Mooring line holding capacity
- •Shackles
- •Wire Rope
- •Wire rope sockets
- •Thimbles
- •Synthetic ropes
- •Mooring hawsers
- •Main dimensions chasers
- •Stevin Mk3 UHC chart
- •Stevin Mk3 drag and penetration chart
- •Stevpris Mk5 UHC chart
- •Stevpris Mk5 drag and penetration chart
- •Stevmanta VLA UPC chart
- •Introduction
- •Propulsion system
- •Propellers
- •Thrusters
- •Rudders
- •Manoeuvring
- •Current
- •Wind
- •Other forces
- •Turning point (Pivot point)
- •Ship handling
- •General layout Jack-Up drilling unit:
- •General information about a Semi Submersible drilling unit:
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Anchor Handling. Chapter 2 Page 5/05 |
MTC
Anchor Handling Course
3. Company Procedures
All operations on board must be performed in accordance with Company Procedures.
The updated procedures can be found on CD-ROM (Q E S System) issued by Technical Organisation in Copenhagen.
Please make sure that the latest version is in use.
Any copies of the procedures used on the Anchor Handling Course are all:
UNCONTROLLED COPIES.
Following procedures can be useful:
•1, Quality 7.: Plans for Shipboard Operations (Risk Assessment)
•2, 0357: Prevention of Fatigue – Watch Schedules – Records of Hours of Work or Rest
•7, 0014: Communication with Maersk Supply Service (Supply Vessels)
•7, 0176: General Order Letter (Supply Vessels)
•8, 0020: Salvage (Supply Vessels)
•11, 0015: Bridge discipline (Supply)
•11, 0234: Safe Mooring Peterhead Harbour (Supply)
•11, 0596: DGPS Installations (Supply, Brazil waters)
•11, 0792: DP Operating Procedure (Relevant Supply Vessels)
•13, 0042: Transport of Methanol (Supply Vessels)
•13, 0065: Cargo (“Fetcher”)
•13, 0207: Tank Cleaning. Water/Oil Based MUD, H2S (Supply Vessels)
•13, 0249: Transportation of Tanks Containing Liquid Gases (Supply Vessels)
•13, 0251: Hose Handling Alongside Installations (Supply Vessels)
•13, 0498: Cargo Handling (Supply Vessels)
•13, 0681: Cargo Pipe Systems – Segregation of Products (Supply Vessels)
•13, 0766: Deck Cargo Stowage Procedure for Stand-by Mode (“NORSEMAN”/”NASCOPIE”)
•13, 0812: Cleaning of Hoses after Transfer of Oil, Brine and MUD to or from Rig
(Supply Vessels)
M:\ANCHOR HANDLING\Course Material\Training Manual New\Chapter 03\Procedures.doc
Chapter 03 |
Page 1 |
MTC
Anchor Handling Course
•15, 0007: Brattvaag Anchorhandling Winch 250 T (Supply Vessels)
•15, 0009: Aquamaster TAW 2500/2500E (Supply Vessels)
•15, 0010: Aquamaster TAW 3000/3000E (Supply Vessels)
•15, 0016: AH & Towing Wire Maintenance (Supply Vessels)
•15, 0019: Towing (Supply Vessels)
•15, 0024: Ulstein Brattvaag AH Winch 450-IT (“Provider”)
•15, 0066: Stern Roller Bearing lubrication (Supply Vessels)
•15, 0082: Deck Lifting Tool (Supply Vessels)
•15, 0142: Wildcat Maintenance (Supply Vessels)
•15, 0252: Wire Spooling (Supply Vessels)
•15, 0256: Diving Support Vessels Assistance (Supply Vessels)
•15, 0258: Working alongside Installations (Supply Vessels)
•15, 0259: Wire Rope Sockets (Supply Vessels)
•15, 0266: Anchor Handling – Deep Water (Supply Vessels)
•15, 0273: Triplex Shark Jaw (Supply Vessels)
•15, 0538: Safety during Anchor Handling and Towing Operation (All AHTS)
•15, 0542: VSP Surveys (Supply Vessels)
•15, 0649: Whaleback Re-enforcement (Supply Vessels)
•15, 0680: AH & Towing Winch gearwheel (open) greasing (Supply Vessels)
•15, 0741: AH & Tow Wires lubrication (Supply Vessels)
•15, 0786: Mono Buoys – Recovery of Hawsers (Supply Vessels)
•15, 0788: Repair of Stern Roller (“Pacer”, “Puncher”, “Promoter”)
•15, 0932: Towing Pin Roller (Supply Vessels)
•15, 0950: AH & Towing Equipment (Supply Vessels)
•15, 1345: Triplex Shark Jaw – Control Measurements (Supply Vessels)
•19, 0500: Transfer of Personnel and Cargo by MOB Boat (Supply Vessels)
•19, 0764: Transfer of Personnel between Ship and Offshore Installation by Basket.
(Supply Vessels)
•23, 1092: Welding Equipment
M:\ANCHOR HANDLING\Course Material\Training Manual New\Chapter 03\Procedures.doc
Chapter 03 |
Page 2 |
MTC
Anchor
Planning and Risk Assessment
Risk Assessment
Some people have a hard time believing that risk assessment has been in the Maritime industry since “Day One” – since plans for the “ARK” were drawn up. Hazards were appreciated and control measures added mentally before activities were completed safely. The difference to day is that they have to be documented like so many other items under the banner of the ISM code and national / international legislation.
It is not a blame culture as seen by a hard core of seafarers.
Obviously it is easy to stand back and comment with hindsight: "If this had been done, then this would not have occurred".
The company is required to comply with customers' requirements, and to ensure protection of the environment, property, the health and safety of the employees and other persons, as far as reasonably practicable, by the application of certain principles. These principles include the avoidance of risks, the evaluation of unavoidable risks and the action required to reduce such risks.
A "Risk Assessment" is a careful examination of the process and its elements to ensure that the right decisions are made and the adequate precautions are in place thereby preventing risks.
Risk is formed from two elements:
•The likelihood (probability) that a hazard may occur;
•The consequences (potential) of the hazardous event.
To avoid or reduce damage to:
•Human life
•Environment, internal and/or external
•Property
Minimise risks by listing the possible effects of any action, and assessing the likelihood of each negative event, as well as how much damage it could inflict. Look for external factors, which could affect your decision. Try to quantify the likelihood of - and reasons for - your plan failing.
Itemising such factors is a step towards the making of contingency plans dealing with any problem.
Use judgement and experience to minimise doubt as much as possible. Think through the consequences of activities, be prepared to compromise, and consider timing carefully. Be aware of that people are not always aware of the risks, as they can’t see them.
An example:
“A man standing close to the stern roller”: One of the risks is, that he can fall in the water. As a matter of fact he is not falling in the water – he is able to see the hazard – so he is aware.
M:\ANCHOR HANDLING\Course Material\Training Manual New\Chapter 04\1.0 Planning and RA.doc
MTC
Anchor
On the other hand:
“During an anchor handling operation an AB is hit in his forehead by a crowbar while he is punching a shackle pin out using a crowbar. The wire rotates caused by torsion in the wire – he can’t see the hazard – so he is not aware of the risk when using a crowbar.
An initial risk assessment shall be made to identify and list all the processes and their associated hazards. Those processes having an inconsequential or trivial risk should be recorded, and will not require further assessment. Those activities having a significant risk must be subject to a detailed risk assessment.
A risk assessment is required to be "suitable and sufficient" with emphasis placed on practicality. The level of detail in a risk assessment should be broadly proportionate to the tasks.
The essential requirements for risk assessment are:
•A careful examination of what, in the nature of activities, could cause risks. Decisions can then be made as to whether enough precautions have been taken or whether more should be done to prevent the risks.
•After identifying the risks and establishing if they are significant, you should consider if they are already covered by other precautions. These precautions can for example be Work Place Instructions, Work Environment Manual, Code of Safe Working Practices for Merchant Seaman, Procedures, checklists etc. and also the likelihood of failure of the precautions already in place.
Where significant risks have been identified a detailed risk assessment in writing must be carried out and recorded appropriately.
The assessment should consider all potential risks, such as who might be harmed and how, fire and explosion, toxic contamination, oil and chemical pollution, property damage and nonconformances.
What may happen?
Get a general view of:
•The process, i.e., materials to be used, activities to be carried out, procedures and equipment to be used, stages of human involvement, and the unexpected operational failure which may result in further risks.
Determine the probability:
•Quantification: Low - Medium - High
Focus on the potential hazardous situations and assess consequences if it happens:
•Quantification: Low - Medium - High.
How will it be possible to intervene, and / or to reduce the risk?
•What can be done to reduce the probability?
•What can be done to reduce the consequences?
•Decide whether existing precautions are adequate or more should be done.
•Record it.
Review the risk assessments from time to time and revise, if necessary.
M:\ANCHOR HANDLING\Course Material\Training Manual New\Chapter 04\1.0 Planning and RA.doc