lr notice no.1

8/9/2019 LR Notice No.1

1/12

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 4, Sections 2 & 5


Chapter 6, Section 2Chapter 7, Section 2

Chapter 8, Sections 1, 3, 6 & 7




Corrigenda

Corrigendum

Corrigenda

CorrigendaCorrigenda

Corrigenda

Corrigenda

Corrigendum

Chapter 13, Sections 1 & 3

Corrigenda

Corrigenda

Corrigenda

Corrigenda


2/12

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


3/12

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


4/12

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


5/12

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


5.3.7 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


6/12

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


yy= applied stress in y direction

= applied shear stress.

(a) xx a(b) yy a(c) o a

(d) e = 1,1a

where


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


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


7/12

Chapters 7 & 8

6


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


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


8/12

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


9/12

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


10/12

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


11/12

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


12/12

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.

lr notice no.1

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