Lloyds code for Lifting Appliances in a Marine Environment

178 Pages·2013·3.28 MB·English

Code for
Lifting Appliances
in a
Marine Environment
August 2013
(Effective 1 February 2014)

Code for
Lifting Appliances
in a
Marine Environment
August 2013
(Effective 1 February 2014)
A guide to the Rules
Code for Lifting Appliances in a Marine
Environment
Introduction
These Rules are published as a complete book.
Numbering and Cross-References
A decimal notation system has been adopted throughout. Five
sets of digits cover the divisions, i.e. Section, sub-Section and
paragraph. The textual cross-referencing within the text is as
follows, although the right hand digits may be added or omitted
depending on the degree of precision required:
(a) In same Section, e.g. see2.1.3 (i.e. down to paragraph).
(b) In another book, e.g. see Pt 5, Ch 1,3 of the (name of
book) (i.e. down to Section).
The cross-referencing for Figures and Tables is as follows:
(a) In same Section, e.g. as shown in Fig. 3.5.1 (i.e. Chapter,
Section and Figure Number).
(b) In another book, e.g. seeTable 2.7.1 in Pt 3, Ch 2 of the
(name of book).
Rules updating
These Rules are published and changed through a system of
Notices. Subscribers are forwarded copies of such Notices
when the Rules change.
Current changes to the Rules that appeared in Notices are
shown with a black rule alongside the amended paragraph on
the left hand side. A solid black rule indicates amendments and
a dotted black rule indicates corrigenda.
August 2013
(Effective 1 February 2014)
Lloyd’s Register is a trading name of Lloyd’s Register Group Limited and its subsidiaries. For further details please see http://www.lr.org/entities
Lloyd's Register Group Limited, its affiliates and subsidiaries and their respective officers, employees or agents are, individually and collectively, referred
to in this clause as ‘Lloyd's Register’. Lloyd's Register assumes no responsibility and shall not be liable to any person for any loss, damage or expense
caused by reliance on the information or advice in this document or howsoever provided, unless that person has signed a contract with the relevant
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conditions set out in that contract.
CODEFORLIFTINGAPPLIANCESINAMARINEENVIRONMENT, August 2013 (Effective 1 February 2014)
Chapter Contents
CODE FOR LIFTING APPLIANCES IN A MARINE ENVIRONMENT
General Regulations
Chapter 1 General
2 Derrick Systems
3 Launch and Recovery Appliances for Survival Craft and Rescue Boats
4 Cranes and Submersible Lifting Appliances
5 Shiplift and Transfer Systems
6 Ro-Ro Access Equipment
7 Lifts
8 Fittings, Loose Gear and Ropes
9 Machinery
10 Electrotechnical Systems
11 Materials and Fabrication
12 Testing, Marking and Surveys
13 Documentation
© Lloyd's Register Group Limited 2013. All rights reserved.
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should be addressed to Lloyd's Register Group Limited, 71 Fenchurch Street, London, EC3M 4BS.
LLOYD’SREGISTER 1

CODEFORLIFTINGAPPLIANCESINAMARINEENVIRONMENT, August 2013 (Effective 1 February 2014)
Contents
GENERAL REGULATIONS
Sections 1 to 8
CHAPTER 1 GENERAL
Section 1 Introduction
1.1 Application
1.2 Certification
1.3 Classification
1.4 Equivalents
1.5 Calculations
1.6 Materials and fabrication
Section 2 Definitions
2.1 Safe Working Load (SWL) of a lifting appliance
2.2 Safe Working Load (SWL) of a lifting component (loose gear)
2.3 Service category
2.4 Geometrical limit
2.5 Factored load
2.6 Duty factor
2.7 Dynamic factor
2.8 Live load
2.9 Dead load
2.10 Design stress
Section 3 Plans and information to be submitted
3.1 Derrick systems
3.2 Davit systems
3.3 Crane systems
3.4 Shiplifts
3.5 Lifts and ramps
3.6 Mechanical, electrical and control aspects
CHAPTER 2 DERRICK SYSTEMS
Section 1 General
1.1 Application
1.2 Equivalents
1.3 Additional calculations
1.4 Information to be submitted
1.5 Materials
1.6 Symbols and definitions
Section 2 Design criteria
2.1 Operating range for derricks
2.2 Inclination of the ship
2.3 Weight of boom and tackle
2.4 Friction allowance
2.5 Factor of safety for ropes
Section 3 Swinging derrick systems
3.1 General
3.2 Operating conditions
3.3 Force diagrams and calculations
Section 4 Union purchase arrangements
4.1 General
4.2 Working range of the rig
4.3 Calculation of forces
LLOYD’SREGISTER 3
CODEFORLIFTINGAPPLIANCESINAMARINEENVIRONMENT, August 2013 (Effective 1 February 2014)
Contents
Section 5 Derrick cranes and derricks of special design
5.1 General
5.2 Twin span tackles
5.3 Slewing guys
5.4 Derrick booms
Section 6 Derrick booms
6.1 General
6.2 Determination of forces
6.3 Boom scantlings
6.4 Construction details
Section 7 Masts and derrick posts
7.1 General
7.2 Symbols
7.3 Loading and allowable stresses
7.4 Stress calculations – Unstayed masts
7.5 Stress calculations – Stayed masts
7.6 Construction details
7.7 Stays
Section 8 Fittings for masts and derrick booms
8.1 General
8.2 Goosenecks and derrick heel assemblies
8.3 Cargo runner and span tackle
8.4 Slewing and preventer guys
8.5 Swivelling and fixed eyeplates
8.6 Blocks
8.7 Cargo hooks
8.8 Miscellaneous fittings
8.9 Deck eyeplates
CHAPTER 3 LAUNCH AND RECOVERY APPLIANCES FOR SURVIVAL CRAFT AND RESCUE BOATS
Section 1 General
1.1 General
1.2 Survival craft davits
1.3 Rescue boat davits
1.4 Offshore life saving systems
1.5 Plan approval requirements
1.6 Safety factors
1.7 Calculation of forces
1.8 Davit winches
1.9 Loose gear
1.10 Release hooks
1.11 Materials
1.12 Testing
1.13 Inspection and maintenance
1.14 Certification and documentation
CHAPTER 4 CRANES AND SUBMERSIBLE LIFTING APPLIANCES
Section 1 Introduction
1.1 General
1.2 Lifting appliances and crane types
1.3 Service category
1.4 Alternative basis of approval
4 LLOYD’SREGISTER
CODEFORLIFTINGAPPLIANCESINAMARINEENVIRONMENT, August 2013 (Effective 1 February 2014)
Contents
Section 2 Shipboard cranes
2.1 General
2.2 Load considerations
2.3 Duty factor
2.4 Basic loads
2.5 Dynamic forces
2.6 Dynamic forces due to crane movements
2.7 Slewing forces
2.8 Centrifugal forces
2.9 Transverse forces due to travel motions
2.10 Buffer forces
2.11 Forces due to ship motion
2.12 Wind loading
2.13 Snow and ice loads
2.14 Temperature effects
2.15 Load combinations
2.16 Stability
2.17 Allowable stress – Elastic failure
2.18 Allowable stress – Compression, torsional and bending members
2.19 Crane jibs – Overall stability
2.20 Slenderness ratio
2.21 Allowable stress – Plate buckling failure
2.22 Allowable stress – Buckling failure of thin walled cylinders
2.23 Allowable stress – Joints and connections
2.24 Slewing ring and slewing ring bolting
2.25 Materials
2.26 Rope safety factors and sheave ratio
Section 3 Offshore cranes
3.1 General
3.2 Service category and duty factor
3.3 Dynamic forces
3.4 Offlead/sidelead displacement, heel/trim angles and base accelerations
3.5 Load combinations
3.6 Hoisting speed
3.7 Slew rings
3.8 Materials
3.9 Rope safety factors
3.10 Motion compensators
3.11 Overload protection systems
Section 4 Submersible handling systems
4.1 General
4.2 Service category and duty factor
4.3 Basic loads
4.4 Dynamic forces
4.5 Offlead and sidelead angles
4.6 Heel and trim angles
4.7 Stowage arrangements
4.8 Materials
4.9 Rope safety factors
4.10 Transfer systems
4.11 Testing
Section 5 Pedestals and foundation
5.1 General
5.2 Design loads
5.3 Allowable stresses
5.4 Materials
5.5 Pedestal flange
LLOYD’SREGISTER 5
CODEFORLIFTINGAPPLIANCESINAMARINEENVIRONMENT, August 2013 (Effective 1 February 2014)
Contents
Section 6 Handling of personnel
6.1 Introduction
6.2 General requirements
6.3 Design requirements
6.4 Additional testing and survey requirements
CHAPTER 5 SHIPLIFT AND TRANSFER SYSTEMS
Section 1 General
1.1 Application of these Rules
1.2 Scope of the Rules
1.3 Classification procedure
1.4 Certification procedure
1.5 Interpretation of the Rules
1.6 Responsibilities of the Owner/Operator, Builder and designer
Section 2 Lifting capacity
2.1 Designated capacities
2.2 Distribution factor
2.3 Effective docking length
2.4 Documented capacities
Section 3 Materials of construction
3.1 Materials for classed installations
3.2 Materials for certificated installations
Section 4 Machinery, control and operational features
4.1 Electrical and control engineering
4.2 Mechanical and hydraulic aspects
Section 5 Design loads and combinations
5.1 Dead loads
5.2 Docking and transfer loads
5.3 Access and general decking loads
5.4 Wind loads
5.5 Seismic loading
5.6 Load combinations
5.7 Allowable stresses
Section 6 Rope and chain factors of safety
6.1 Rope factor of safety
6.2 Chain safety factors
Section 7 Testing
7.1 General
7.2 Load tests
7.3 Operational tests
Section 8 Classification Regulations
8.1 General
8.2 Character of classification and Class Notation
8.3 Plan approval
8.4 Fabrication under Survey of the installation
8.5 Installation Survey and testing
8.6 Periodical Surveys
8.7 Classification of installations not built under Survey
8.8 Certification requirements
6 LLOYD’SREGISTER