Download - LR Notice No.1
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The status of this Rule set is amended as shown and is now to be read in conjunction with this and prior
Notices. Any corrigenda included in the Notice are effective immediately.
Issue date: October 2014
Notice No. 1 (Corrigenda)Code forLifting Appliances in a
Marine Environment, August 2013
Working togetherfor a safer world
Amendments to Effective date
Chapter 1, Section 3
Chapter 2, Section 2
Chapter 3, Section 1
Chapter 4, Sections 2 & 5
Chapter 5, Section 5
Chapter 6, Section 2Chapter 7, Section 2
Chapter 8, Sections 1, 3, 6 & 7
Chapter 9, Section 3
Chapter 10, Section 2
Chapter 12, Section 1
Corrigenda
Corrigendum
Corrigenda
CorrigendaCorrigenda
Corrigenda
Corrigenda
Corrigendum
Chapter 13, Sections 1 & 3
Corrigenda
Corrigenda
Corrigenda
Corrigenda
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CORRIGENDA
Section 3
Plans and information to besubmitted
3.3 Crane systems
3.3.3 Plans as listed in 3.6.1 3.6 are to be submitted for
classed cranes/systems.
3.4 Shiplifts
3.4.3 Mechanical, electrical and control aspects. The
plans as listed in 3.6.1 3.6 are to be submitted for approval,
see also Chapters 9 and 10.
CORRIGENDA
Section 2
Design criteria
2.4 Friction allowance
(Part only shown)
2.4.3 As an alternative, the coefficients of rope tensions
may be determined as follows:
Plowering(,i,j) = ifj 0
= otherwise
where
j = location in drive system (e.g.,seeTable
Fig. 2.2.1 where Pj is defined).
1
i1 1
(1 + )kk=0
1
i1 1 (1 + )kk=0
1
(1 + )i11
(1 + )j1
Chapters 1 & 2
1
Chapter 1
General
Chapter 2
Derrick Systems
The load Fisheld
on four partsof rope,therefore N= 4
The load Pisheldon six partsof rope,
therefore N= 6
Sheavesdrawn asdifferentdiametersfor clarity
Cargo runnerdead end
F0
F1
P2
F2
P3
P4F
3
P0
P1
W
i= 4
i= 6
Fig. 2.2.1 Coefficients of rope tension
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CORRIGENDUM
Section 1
General
1.7 Calculation of forces
Chapter 3
2
Chapter 3
Launch and Recovery Appliances for Survival Craft and Rescue Boats
2t
Doublereeving
ONE SIDE ONLY
L1
20
W
w
Davit stop
L3
Nu
NLP
L2
20
20
Method of determining the maximum wire rope tension in a typical roller-trackdavit system with a double fall, andembarkation occuring at the 'turned-in' position.where Total lowering weight (inc. all passengers) = 2W kN Weight on each davit arm = W kN Self weight of each davit arm = w kNMaximum tension in wire rope occurswhen davit arm isbraked a small distance just above the stop with lifeboat fully laden.
Taking momentsabout point P(the intersection of roller-trackreactionsNuand NL):
Maximum rope tension, t = kN t = kN
Safety factor required = 6Minimum breaking load required, T = 6t kN
WL1= wL2
2L3
WL1+ wL22L
3
Fig. 3.1.2 Roller-track system, maximum wire rope tension
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Chapter 4
3
CORRIGENDA
Section 2
Shipboard cranes
2.11 Forces due to ship motion
2.17 Allowable stress - Elastic failure
(Part only shown)
2.17.8 In the case where the structural analysis is carried
out by means of detailed finite element models, higher allowable
stresses may be applied as follows:
(a) 1.FE 1,1a(b) 2.FE 1,1a(c) o.FE 1,1a(d) e.FE 1,1
2awhere
1.FE = fi rst principal stress
2.FE = second principal stresso.FE = shear stress
e.FE = equivalent stress
2.18 Allowable stress Compression, torsional and
bending members
(Part only shown)
2.18.2 For members subjected to simple compression, the
critical compression stress is given by the Perry-Robertson
formulae as follows:
= 0,001a 0,2( )E = Youngs modulus
K L
R r
E
y
2.21 Allowable stress Plate buckling failure
2.21.3 For components subject to shear stress the critical
buckling stress is given by:(a) For b < 0,29y
b = Ks E2
( )(b) For b 0,29y
b = 0,58y 1 ( )where
b = critical shear buckling stress
b = smallest plate dimension
a = plate length corresponding tob
Ks = compression shear buckling constant, defined asfollows:
for 1:
Ks = 5,34 +( )for < 1:
Ks = 4,0 +( ) =
= Poissons ratio
The graphical representation of Ks is provided in Fig. 4.2.8.
2.21.4 For components subject to bending stress, the
critical buckling stress is given by:
(a) For bb < 0,5y
bb = Kb E2
( )(b) For bb 0,5y
bb = y 1 ( )where
bb = critical buckling stress
b = plate width, i.e., normal to direction of stress
a = plate length, i.e., in the direction of stress
Kb = compression bending buckling constant, defined
as follows:
for :
Kb = 23,9 = 21,6
for < :
Kb = 15,87 + + 8,62
2
( ) =
= Poissons ratio
The graphical representation of Kb is provided in Fig. 4.2.9.
ab
2
12 (1 2)
1,87
2
2
3
2
12 (1 2)
0,58y
4Ks Et 2(b)
t
b
2
3
y
4Kb Et 2(b)
2
12 (1 2)
4,0
2
t
b
a
b
2
12 (1 2)
5,34
2
Chapter 4
Cranes and Submersible Lifting Appliances
Table 4.2.2 Ship motions
Motion Maximum single amplitude Period in seconds
Roll = sin1 see Note Tr =
Pitch = 12e Tr Tp = 0,5
Heave m Th = 0,5
where = sin ()
= (0,45 + 0,1 )(0,45 0,54 )Lpp = length of ship between perpendiculars, in metres
B = moulded breadth of ship, in metresGM = transverse metacentric height of loaded ship, in metres
= is to be taken as not greater than 8
NOTE need not exceed 30 and is not to be taken less than 22.
0,7B
GM
Lpp
Lpp
L1270
LB
Lpp
80
Lpp
300
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Chapters 4 & 5
4
2.22 Allowable stress Buckling failure of thin
walled cylinders
(Part only shown)
2.22.3 For components subject to bending the critical
buckling stress is given by:
bb1 = y 1 +( )
Please note:
This amendment has already been incorporated into the
August 2013 (Effective date 1 February 2014) edition of
this Code.
2.24 Slewing ring and slewing ring bolting
2.24.7 The slewing rings are to comply with the Charpy
V-notch impact test requirements as per 2.25.5 2.25.6, as
applicable.
CORRIGENDA
Section 5
Design loads and combinations
5.7 Allowable stresses
5.7.3 For steel with y/u > 0,85, the allowable stress is to
be derived from the following expression:
a = 0,46 0,459F(u + y)
a = 0,27 0,266F(u + y)
where a and a are defined in 5.7.1.
5.7.4 Steels with y/u > 0,94y/u > 0,94 are not generally
acceptable and shall be special
y
4K'b E
Section 5
Pedestals and foundation
5.3 Allowable stresses
5.3.7 The increase of the allowable stresses due to use of
the finite element method is to be as per the principles of 2.17.5
2.17.8.
5.7.6 For components subjected to combined stresses,
the following allowable stress criteria are to be used:
(a) xx< Ft(b) yy< Ft
(c) o< F
(d) = 1,1Ft
where
xx = applied stress in x direction, in N/mm2
yy = applied stress in y direction, in N/mm2
o = applied shear stress, in N/mm2.
(a) xx a(b) yy a(c) o a
(d) e = 1,1a
where
xx = applied stress in x direction
yy = applied stress in y directiono = applied shear stress.
xx2 + yy
2 xxyy + 3o2
xx2 + yy
2 xxyy + 3o2
Table 4.2.3 Forces due to ship motions
Component of force, in Newtons
Source Parallel to deck Normal to deck
Transverse Longitudinal
STATIC
Roll Wcos Wsin Wsin
Pitch Wcos Wsin
Combined Wcos (0,71) cos (0,71) Wsin (0,71) Wsin (0,71)
Chapter 5
Shiplift and Transfer Systems
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Chapters 6 & 7
5
CORRIGENDA
Section 2
Loading and design criteria
2.6 Allowable stress Elastic failure
2.6.6 For components subjected to combined stresses,
the following allowable stress criteria are to be used:
(a) xxF t(b) yyF t(c) F
(d) e = 1,1F t
where
xx = applied stress in x direction
yy= applied stress in y direction
= applied shear stress.
(a) xx a(b) yy a(c) o a
(d) e = 1,1a
where
xx = applied stress in x direction
yy = applied stress in y direction
o = applied shear stress.
CORRIGENDA
Section 2
Passenger lifts2.5 Load combinations
(Part only shown)
2.5.1 The lift and its associated mechanism and structure
are to be considered with respect to design loads resulting from
the following conditions:
(a) Case 1: The lift in the operating condition is to be
considered with respect to forces due to ship motion
resulting from the conditions defined in 2.4.1 and 2.4.3,
together with the normal to deck components of dead
load and live load multiplied by the factor, k2, to be
obtained from 2.3.1. This is represented by the following
expression:FT,Lw = transverse force due to the static component
of roll resulting from LwFT,Lc = transverse force due to the static component
of roll resulting from Lc
xx2 + yy
2 xxyy + 3o2
xx2 + yy
2 xx yy + 3o2
2.6.8 In case the structural analysis is carried out by means
of detailed finite element models, higher allowable stresses can
be applied as follows:
(a) xx/FE1,1xx(b) yy/FE1,1yy(c) o/FE1,1o(d) e/FE1,1e(a) 1.FE 1,1a(b) 2.FE 1,1a(c) o.FE 1,1a(d) e.FE 1,1
2awhere
1.FE = first principal stress
2.FE = second principal stress
o.FE = shear stress
e.FE = equivalent stress
Higher allowable stresses, as defined above, may only be
applied if the actual stresses are localised. In case the actual
stresses can also be calculated by means of analytical
methods, the above higher allowable stresses are not
applicable and 2.6.1 to 2.6.4 are to be applied.
2.13 Materials
2.13.3 Where the Ro-Ro equipment is subject to
certification only, the selected steel grade is to provide
adequate assurance against brittle fracture taking into account
the material tensile strength and thickness and the environment
in which the Ro-Ro equipment is designed to operate and, in
general, is to comply with the Charpy test requirements givenin Tables 4.2.18 to 4.2.20 in Chapter 4.
FL,Lw = longitudinal force due to the static
component of pitch resulting from LwFL,Lc = longitudinal force due to the static
component of pitch resulting from Lc(c) Case 3: The lift in the exceptional condition, e.g., buffer
stroke, safety device operation or rupture valve operation,
is to be considered with respect to the forces resulting
from the inclinations due to ship motions, as defined in
2.4.1, together with the normal to deck components of
dead load and live load multiplied by the factork1 which
is to be obtained from 2.3.1. This is represented by the
following expression:
Fstat,N,Lc = force normal to deck normal to deck force
resulting from static component of the
rated load Lc
Chapter 6
Ro-Ro Access Equipment
Chapter 7
Lifts
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Chapters 7 & 8
6
2.6 Allowable stresses
2.6.8 In the case where the structural analysis is carried
out by means of detailed finite element models, higher allowable
stresses can be applied as follows:
(a) xx.FE 1,1a(b) yy.FE 1,1a(c) o.FE 1,1a(d) e.FE 1,1
2 awhere
1.FE = first principal stress
2.FE = second principal stress
o.FE = shear stress
e.FE = equivalent stress
Higher allowable stresses, as defined above, can only be
applied if the actual stresses are localised. In the case where the
actual stresses can also be calculated by means of analytical
methods, these higher allowable stresses are not applicable
and 2.6.1 to 2.6.7 are to be applied.
CORRIGENDA
Section 1
General
1.3 Testing and certification
1.3.1 The requirements for testing of finished equipment
and certification are given in Chapter 12 and 13 respectively.
Section 3
Blocks
3.5 Hook blocks
(Part only shown)
3.5.1 Blocks that are integrated with a hook are known as
hook blocks. As an alternative to the allowable stresses given
in Table 8.3.3, the hook blocks are to comply with all the
requirements below:
(a) The hook blocks are to be designed with a safety factor
against the ultimate tensile strength as given below:
For hook blocks with SWL < 10 25 t, SF = 5,0
and SWL > 160 t, SF = 3,0.
For hook blocks with a SWL between 10 25 t and 160 t,
the safety factor should be based on the equation below:
SF =
where
SF = minimum safety factor required
SWL = safe working load of hook block, in tonnes.
104
9,88SWL + 1753
Section 6Steel wire ropes
6.2 Steel wire for ropes
(Part only shown)
Section 7
Fibre ropes
7.1 General
7.1.2 Ropes may be manufactured from one of the
following materials:
Natural fibre Man-made fibre
Natural fibre Man Made fibre
Hemp Polyester
Manila Polyamide (nylon)
Sisal Polypropylene
Polyethylene
Aramid
HMWPE or UHMWPE
Proposals to use other materials will be specially considered.
Chapter 8
Fittings, Loose Gear and Ropes
Table 8.2.2 8.6.2 Permitted variations in tensile
strength
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Chapters 9 & 10
7
CORRIGENDA
Section 3
Mechanical design requirements
3.9 Bearings
3.9.2 Plain and rolling contact (anti-friction) bearings are to
be in accordance with BS2573-2 EN 13001 or an equivalent
National or International Standard acceptable to LR.
3.10 Slewing rings
3.10.1 Slewing rings are to be in accordance with BS2573-2
EN 13001 or an equivalent National or International Standard
acceptable to LR.
CORRIGENDUM
Section 2
Control, alarm and safety systems
2.2 Documentation
2.2.2 Documentation for the control, alarm and safety
systems of the following lifting appliances is to be submitted:
Lifts for passengers and crew.
Lifts and ramps for cargo handling.
Derrick winches.
Derrick cranes Cranes.
Mechanical lift docks.
Chapter 10
Electrotechnical Systems
Chapter 9
Machinery
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Chapter 12
8
CORRIGENDA
Section 1
Testing
1.1 General
Chapter 12
Testing, Marking and Surveys
50 100 1500
50
100
150
200
250
300
350
Single sheave
blocks
Hooks, shackles,
chains, etc.
Multi-sheave
blocks
Lifting beams,
spreaders, etc.
Safe working load, in tonnes
Proofload,
in
tonnes
Fig. 12.1.1 Proof loads for loose gear
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Chapter 12
9
1.7 Launch and recovery systems for diving
operations
1.7.2 Where the diving system is approved with hoisting
factor of more than 1,7, the test loads indicated in Table
12.1.5 1.7.1 are to be increased by the ration of Fh/1,7, where
Fh is derived from Ch 4,4.
50 100 1500
50
100
150
200
250
300
350
Single sheave
blocks
Hooks, shackles,
chains, etc.
Multi-sheave
blocks
Lifting beams,
spreaders, etc.
Safe working load, in tonnes
Proofload,
in
tonnes
Fig. 12.1.1 Proof loads for loose gear
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10
Chapter 13
CORRIGENDA
Section 1
General
1.1 Procedure
1.1.1 The procedure and requirements for the issue of
certification by Lloyds Register (hereinafter referred to as LR)
are specified in Ch 1,2, Ch 1, 1.2.
1.1.5 Where the lifting appliance is also to be classed, the
requirements of Ch 1,3 Ch 1, 1.3 are to be complied with. The
appropriate classification certificates are detailed in this Chapter.
Section 3
Classification procedure
3.1 General
(Part only shown)
Chapter 13
Documentation
Certification process step ComponentRequired or issued
References
Classification process step documentation
0 General Complete lifting appliance N/A Ch 1,1.3.6
Table 13.3.1 Minimum requirements for the classification of lifting appliances
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Lloyds Register Group Limited 2014Published by Lloyds Register Group Limited
Registered office (Reg. no. 08126909)71 Fenchurch Street, London, EC3M 4BS
United Kingdom
Lloyds Register is a trading name of Lloyds Register Group Limited and its subsidiaries. For further details please see http://www.lr.org/entities
Lloyd's Register Group Limited, its subsidiaries and affiliates 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 Lloyd's Register entity for the provision of this information or
advice and in that case any responsibility or liability is exclusively on the terms and conditions set out in that contract.