3 Safe Operation of Mobile Cranes - Stephen Siu

8/9/2019 3 Safe Operation of Mobile Cranes - Stephen Siu

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CopyrightLiebherr2012

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Associations

Safety Lifting by EU standard

Germany

Europe

World

manufacturers crane users

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CCMA

ChinaConstruction

MachineryAssociation



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International Crane StakeholdersAssociation

founded at Bauma 2013, before

named ICTML

A discussion platform for all mobilecrane maufacturers and users

worldwide

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Europe: machinery directive 2006/42 EC

The machinery directive is a law, punishment is possible

if not followed

Only the manufacturer is responsible to bring a safemachine to the market

The market surveillance is checking if the machinerydirective is fulfi lled

If the EN standards are fulfil led, it is estimated that themachinery directive is fulf illed

Safety Lifting by EU standard5


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CCMA

ChinaConstruction

MachineryAssociation



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Starting point

8 Safety Lifting by EU standard


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Expensive labour


Work Alone


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Monitoring the monitor



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Options

Old versionNew version

BellFlashing beacon

Light rod (optional)

* = optional

Warning light rod

Horn

Tail light (position light)*



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What is the EN 13000?

EN 13000 is the basic standard to fulfill the European

Machinery Directive.

This standard is valid for all new cranes, which are

delivered from 01.05.2010 into the EU.

On these machines, the EN 13000 must be activated.

If the EN 13000 is active, other shut off limits and

other conditions for possible bypasses apply.

The standard must be checked every 5 years



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Points from EN 13000

(1) scope

EN13000 does not cover hazards related to the lifting of

persons.

Mobile cranes covered by this European standard are

designed for a limited number of stress cycles and

particular properties of motions.

offshore operation..Crane working on barge

4.1.2 Load effect

Load effect consider the configurations without changing

outriggers, counterweight, counterweight position.



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How EN13000 ensure safety lifting

Root cause

1. Overload

Overload protection BYPASSED

2. Stability

Influence of wind

Failure of support base



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How EN13000 ensure safety lifting

Root cause 1: Overload protection BYPASSED



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arrangement of bridging devices(come into force may 2010)

Switching

cabinet

Drivers

seat

Display 1 Set up button

(no key required)



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Radius

capacity

Working area,capacity chart available

Min. radiusMax. radius

Rigging,

de

rigging,

no

capacitychar

t

ava

ilable

Max. capacity with

Set up button :

110 %

1

Area with

speedreduced to

15%

100%

capacity



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EN 13000 chapter 4.2.6.3.3

EN 13000 - 4.2.6.2.2

Movements of attachment parts shall be equipped

with two consecutive motion limiters.

e.g. luffing jibs have two independent angle

sensor

EN 13000 4.2.6.3.3

In case of a failure of components, a bridging devicemay be necessary and is located outside of the

crane operators cab is under lock and key



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Shut off sensor defective

If one of the following sensors is

defective, all crane movements (exceptslewing gear) are turned off.

LG (Tele

cylinder)

WG (Main boom / Accessories) DK (Luffing cylinder)

DI (Track switch Tele) IA (Tele pinning) ZM* (Pressure test bracket)

* = optional

Shut off: Sensor defective



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Shut off sensor defective

The following icon is shown blinking in the

LICCON monitor:

Shut off: Sensor defective

In the horn icon of the crane operating screen is shown that a system error (E!) is

present. The error is shown in the error stack by pressing the function key F8.

* = optional

On LICCON 2 Mobile cranes, the following

additional sensors also turn all cranemovements off in case of a defect (except

slewing gear).

DG / Turn sensor ZM / Force test axle*NG / Turn sensor



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Bypass LMB emergency operationEN 13000 chapter 4.2.6.3.3

Switching

cabinet

Drivers

seat

Display 1

2

Set up button

(no key required)

Bridging

device

Outside the cab and

lockable

22 Safety Lifting by EU standardSafety Lifting by EU standard


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Application:

Bypass LMB emergency operation

Variation New with

RFID- Sensor and

transponder (TAG)

Variation Old with key

switch in switch cabinet

Bypass LMB emergency operation

The LMB emergency operation can only be used at

EN 13000 active.

If a sensor is defective, which suspends the LMB.

In case of failure of the overload system.


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Bridging device No. 2

outside the operators cab

Functions: No limitation in capacity by the rated capacity limiter

Max. speed reduced to 15%

Acoustic and optical warning inside and outside the operators cabif the rated capacity limiter is bridged, cannot be switched off

Self hold function active if:

- Master switch is in neutral position

Self hold function deleted automatically: Latest after 30 minutes

At engine stop



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Rated capacity

EN 13000 - 4.1.2.6.1

The rigid body stability of the crane shall be in

accordance with ISO 4305.

EN 13000 4.2.6.3.2

All mobile cranes having a rate capacity of not less1000 kg.

75% load chartis required on outrigger and crawler



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What software variations are available?

Presently 3 software versions are sent out, which have

been valid since 01.05.2010:

EN13000 - activated, with 75% charts - with CE-conformity; for

members of the European Committee for Standardization.

EN13000 - deactivated, with 85% charts; for deliveries outside the

EU.



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EN 13000 active EN 13000 not active

How can one see if the EN 13000 is active?

LICCON2 LICCON2



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Recording capacity approx. 185 hrs. (circular

buffer) approx. 2 months at 1000 operatinghours per year.

Checked each time when the crane is put into

operation

A system error appears and the buzzer in the

LICCON monitor sounds when data logger is

failure. After confirmation of the system error, it

is issued repeatedly to warn the crane driver

again.

data is recorded automatically, independant ofthe crane operator

Manipulation of the data in the recorder is not

possible


EN13000 chapter 4.2.6.3.3: Data recorder


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Recorded data for:

time, date

Selected configuration (boom configuration, ballast,

outrigger extension, reeving, hook block)

Actual loadPercentage of loading

Radius

Main boom angle, luffing jib angle

Total length of tele boom, length of each tele section

All bridging devices



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Each actuation of the set-up button or the bridging

device, which leads to an overloading of thecrane(>100% of the set load chart), is recorded.

The size of the overloading is recorded

It is very useful to reconstruct the last load case



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Read out of the data logger via

a manufacturer specificinterface

Analyse or convert the latest

data set and statistic via asoftware driver and a software

filter, delivered by the

manufacturer, to an Excel

readable format



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Root cause 2:

Influence of wind on crane operation

Original permissible

wind speed:

crane design with 9 m/s



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Influence of wind on crane operation

Calculate according to

Wind resistance factor

surface area exposed to

wind



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Direction of the wind

Wind from the side

The LMB system do not take sidewind into account.



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Root cause 3: handling of supporting base



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Root cause 3: handling of supporting base



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No supporting base



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Supporting difficulties

http://www.panoramio.com/photo/1206212


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Support base

Code of practice on mobile

crane (Hong Kong)

Ch. 9, Sitting of mobile crane

9.2.7

The mat or timber blocking

should be at least 3 times

larger in area than the float

(unless a smaller area is

specified by themanufacturer) and

completely support the float.


Code of practice on mobile crane (Hong Kong)


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Support base



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Example: 100 tons mobile crane lift 10 tons load

The maximum force at outr igger base is 31 tons = 31 x 9.8 =

303.8 KN = 303800 N

Required support surface = support force / permissible

ground pressure

=303800/20 = 15190 cm2 = 123.2cm x 123.2 cm

Dimensions of support float is 50cm x 50cm = 2500 cm2

A plate of minimum 124 x 124 cm needs to put under the

outrigger base.

It means the surface need to extend 6 times by area in

order to achieve the requirement.



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Legislation


For years, the

support ing basedetection is stipulated

(Japan package).

Since November 2011,

all cranes have to beequiped with the

support ing base

detection.

EN 13000, thesupporting base

detection will also be

included.

in 4th quarter 2014


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Traditional technique



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New technique vario base



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New technique vario base

Full outrigger load chart



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Keep the balance


TH NK YOU FOR

YOUR LISTENING


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3 Safe Operation of Mobile Cranes - Stephen Siu

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Transcript of 3 Safe Operation of Mobile Cranes - Stephen Siu