New EN 13 New 1385 8522-1 1 Offsh Off shor ore e Cr Cr anes Editio Edit ion n 2013 2013 Svein Harald Hetland, MSc, BP Lifting Technical Authority
New revision of EN13852-1 expected in 2013 • Status of the work • Hearing and implementation implementation schedule • Some changes proposed by the working group
CEN/TC147 Crane safety
TC147
WG1 Termino logy and harmo nisatio n WG2 Crane Safety – Design - General WG3 Crane Safety – Design – Requirements for equipment WG4 Crane Safety – Requir ements for h ealth and safety WG5 Crane Safety – Requirements f or insp ection and safe use
s e n a 1 1 r c G e l i W b o M
s e 2 n r 1 a G c r W e w o T
s e n a r 3 c 1 b j G i g W n i w e l S
y r t n a 4 g 1 d G n a W e g d i r B
s e n r 5 a 1 c G e r o W h s f f O
s e n r 6 a 1 c G g n i W t a o l F
s t s i o h 7 d 1 n G a W s e h c n i W
s e n 8 a 1 r c G r e W d a o L
s e 9 n r 1 a G c e l W b a C
s e n a r c 0 d e 2 t G a r W e p o d n a H
s t n e m h 1 c a 2 t t G a d W e x i f n o N
s e c i v e 2 d 2 g n G i t a l W u p i n a M
Existing EN13852-1 May 2004 is revised due to: − More than 5 years since publication − Two amendments, numerous recommendations for use − Reference standards being replaced − Alignment with other crane standards necessary − The New Machinery Directive into force on 29 Dec 2009 − May 2004 edition is no longer harmonised
Design requirements revised to be more general for all kind of boom configurations
New revision of EN13852-1 expected in 2013, revision t ime schedule
2004 2005
n o i t i d e t s r i F
n o i t a s i n o m r a H
2007 y r i u t n s q n o g n e i n E m t u i t 1 l e N m o s E o e e C C r m t s 1
2009
m e t i k r o w w e N
2010
2011
s y g r i i n u t t q n e n e E e m m N m n 2 o E o i C C t u l d o n 2 s e r
2013
e t o V l a m r o F
2013
n o i t a c i l b u P
Summary from the revision work ( According to Microsoft Word): 25001 words (94 pages) 4630 revisions are done 1621 new insertions 1489 formatting 271 moves other
Principle of safety integration “
Harm ” :
Vibrations
List of significant hazards:
Electrical hazards
New revision of EN13852-1 expected in 2013 Main draft changes – strength and stability • Implementation of EN13001 series to replace FEM Sec.I reference • EN13001-1 Crane safety – General design − Part 1: General principles and requirements − Part 2: Load actions
• CEN/TS 13001 Crane safety – General design − Part 3-1: Limit states and proof of competence of steel structures − Part 3-2: Limit states and proof of competence of wire ropes in reeving systems − Part 3-3: Limit states and proof of competence of wheel/rail contacts − Part 3-4: Machinery (missing , FEM 1.001 still to be used) − Part 3-5: Limit states and proof of competence of forged hooks
Amendments 1 Scope does not cover: (new / amended list)
• operations at an ambient temperature above 45 °C; • hand powered cranes and other cranes with a rated capacity less than 2 t or outreach less than 8 m; • accidental loads due to collisions; • emergency rescue operations; (except training)
Scope does not cover: (deleted items)
• loads due to earthquake • cranes on seagoing vessels, excluded from the scope of the Machinery Directive
Amendments 2B Some new defini tions : 3.20 off-board lift lifting operation between the offshore installation and a floating unit or the sea 3.22 offs hore crane crane mounted on an offshore installation and used for off-board and on-board lifts 3.23 offshore installation structure supported by the seabed or floating unit, exposed to an offshore marine environment 3.24 on-board lif t lifting operation within the offshore installation 3.30 rated capacit y limi ter (RCL) device or system that automatically prevents the rated capacity from being exceeded during on-board lifts or personnel lifts
Amendments 5 Figure 3 – Off-board lifts Key: 1 Deck velocity
5 Boom tip velocity
9 Wind
2 Offlead
6 Snow and ice
10 Sideload
3 Installation inclination (trim and heel)
7 Vertical installation acceleration
11 Actual hook load
4 Hoisting velocity
8 Horizontal installation acceleration
5.3.2 Non-electrotechnical equipment
Non-electro technical equipment shall in addition to the requirements of this standard, be in accordance with EN 13135-2:2004+A1:2010. Safety related parts of control systems shall conform to the required performance level in accordance with ISO 13849-1:2008, see Annex K.
5.3.7 Winches and brakes Brakes shall be in accordance with Annex I. In addition to the normal working brake, luffing winches shall be equipped with a mechanically and operationally independent back-up brake, with separate control circuits.
New revision of EN13852-1 expected in 2013 Some other main changes • Preferred location of MOPS on left hand • Preferred location of Emergency stop on right hand • Rated capacity limiter, RCL • Winch motor overspeeding protection • Fire protection • Secondary motion limiters for personnel lifting
Static Wire Rope Design Factors
6
API 6th Edition 5 r o t c a F n g i s e D
Note: API 7th Edition, EN 138521, DNV and Lloyds curves are all overlapping 4 API 7th Edition API 6th Edition EN 13852-1 DNV 3
Lloyds
2 0
50,000
10t
100,000
150,000
200,000
SWL
SWL (lb)
250,000
300,000
350,000
160t
400,000
Dynamic safety factor reduced by D/d-ratio bending factor according to CEN/TS 13001-3-2.
d
Dynamic safety factor running rigging new EN 13852-1:2013 3,50
n y D F S
EN13852-1:2013
<10 t
3,00
70t 100t
2,50
2.3
>160t 2,00
DNV 2.22 & API 2c 1,50
1 7
3 2
8 1
6 4
0 0
New load reference factor reduction to align with the existing practice in EN13852-1:2004 for reduction of safety factor up to 160t.
Dynamic safety factor running rigging 3,5 DNV 2.22 & API 2c
3 n y D F S
2,5
New EN13852-1
2 EN 13862-1:2004
1,5 Rated c apacit y tonnes DNV 2.22 & API 2C: SF = 2.3 ψ ψ = dynamic factor for the crane
New EN ISO 13849-1 Requirement for Performance Level:
A crane with a life time of 20.000 operating hours: PLr= c Probability for critical failure in the lifetime is >= 2% til < 6% PLr= d Probability for critical failure in the lifetime is >= 0.002 til < 2%
New revision of EN13852-1 expected in 2013 Main draft changes – lift ing of persons, 5.10
• Lifting of persons is defined as a high risk application • 50% reduction of the rated capacity for the lifting of persons is replaced by applying a risk coefficient ү n = 1.5 (Gives still approx. 50% reduction of inboard rated capacity, but utilize the passive shock absorbers for off-board MOB boat lifts.)
• EN 13001-2:2004 clause 4.3.2 states how the risk coefficient shall be used in the proof calculations • The risk coefficient shall also be included in the wire rope safety factors, ref. Annex G of EN13852-1
5.9.2 Emergency Operation System 1/2 General-purpose offshore cranes shall be equipped with an emergency operation system (EOS). The EOS shall make it possible to operate the crane with reduced speeds in the following emergencies: 1.Single point failure or interruption of the main power supply 2.Single point failure in the main power unit 3.Single point failure in the control system The main parts of power and control system and the EOS are shown in Figure 6.
EOS - Emergency Operation System 2/2 DS10000 Tz = 8.2s Tp = 10.5s Hsig = 2m Heading = 15 degrees Lswing = 27 m Dampin g = 0% vs 0.5% JONSWAP spectrum
45 40 35 ] 30 g e d [ e l 25 g n a g 20 n i w S 15
10 5 0 0
5
10
15 Time, t [min ]
20
25
30
Within few minutes, the wire with forerunner (typical pendulum length between 10-40m) end up in to resonance with vessels motions at typical wave length periods of 8-12 sec.
It shall be possible to make the EOS operational without undue delay taking into consideration the following;
• location of the crane (fixed or floating installation) • mode of operation (load handling or lifting of personnel) • operational limitations (environmental conditions) The minimum hook velocity for all main functions of the EOS shall be10 % of the
New revision of EN13852-1 expected in 2013 B.4.1 Hoist ing and lowering velocity V H
=
K H
∗
(V
2
D
2
+ V C
)
where KH is a velocity factor according to table B.3 Table B.3 - Veloci ty fact or
VH
KH
Single fall reeving
Multiple fall reeving
No hook load
0,65
0,40
At rated capacity
0,50
0,28
New min. hoi sting speed, singl e fall, no load 3,00 2,50 Fixed 2,00
Semi
s / 1,50 m
FPSO
1,00
EN13852-1:2004/API 2c 6th/DNV 2.22
0,50
DNV 2.22 floaters
0,00 1,00 1,50 2,00 2,50 3,00 3,50 4,00 4,50 5,00 5,50 6,00
New revision of EN13852-1 expected in 2013 B.4.2 Horiziontal hook velocity
VH
V R
=
K R
∗
(V
2
V L
=
K L
∗
(V
2
D
D
+ V C
2
)
2
)
+ V C
VR where KR and KL is a velocity factor according to table B.4
VL
With and without load
Horizontal speed
Luffing FACTOR
0,10
Slewing FACTOR
Radius
0,60
22 000
Requir ed speed [m/s] SWH m 1,00 1,50 2,00 2,50 3,00 3,50 4,00 4,50 5,00 5,50 6,00
mm
RPM
Fixed
Semi
FPSO
Fixed
Semi
FPSO
0,40 0,57 0,72 0,86 0,98 1,10 1,20 1,30 1,38 1,47 1,54
0,43 0,61 0,78 0,94 1,08 1,21 1,34 1,46 1,57 1,68 1,79
0,50 0,72 0,94 1,14 1,33 1,52 1,70 1,87 2,04 2,21 2,37
0,17 0,25 0,31 0,37 0,43 0,48 0,52 0,56 0,60 0,64 0,67
0,19 0,27 0,34 0,41 0,47 0,53 0,58 0,63 0,68 0,73 0,78
0,22 0,31 0,41 0,49 0,58 0,66 0,74 0,81 0,89 0,96 1,03
SWH m 1,00 1,50 2,00 2,50 3,00 3,50 4,00 4,50 5,00 5,50 6,00
Fixed
Required speed Semi
FPSO
0,07 0,09 0,12 0,14 0,16 0,18 0,20 0,22 0,23 0,24 0,26
0,07 0,10 0,13 0,16 0,18 0,20 0,22 0,24 0,26 0,28 0,30
0,08 0,12 0,16 0,19 0,22 0,25 0,28 0,31 0,34 0,37 0,40
Fixed
Required speed Semi
FPSO
0,17 0,24 0,30 0,36 0,41 0,46 0,50 0,54 0,58 0,61 0,64
0,18 0,25 0,33 0,39 0,45 0,51 0,56 0,61 0,66 0,70 0,74
0,21 0,30 0,39 0,47 0,55 0,63 0,71 0,78 0,85 0,92 0,99
Luffing FACTOR
SWH m 1,00 1,50 2,00 2,50 3,00 3,50 4,00 4,50 5,00 5,50 6,00
0,25
Knuckle boom/lattice cranes horizontal luffing:
Horizontal luffing speed of knuckle boom Versus Lattice boom crane with existing requirements.
Calculation of horizontal luffing speed Valhall PH crane (55m): ACTUAL LUFFING SPEED Valhall PH crane 55m boom Nominal load Power Max. rope speed
kg kW m/s
15 000 300 2,00
Radius
mm
10 000 15 000 20 000 25 000 30 000 35 000 40 000 45 000 50 000 55 000
Boom speed Horizontal speed
degr./s m/s
2,367 2,250
2,023 1,890
1,789 1,626
1,624 1,419
1,503 1,248
1,419 1,095
1,360 0,950
1,326 0,802
1,319 0,630
1,369 0,373
Skarv cranes (knuckle boom 48m) = luffing speed of 0,5 m/s at 30m radius
New revision of EN13852-1 expect ed in 2013 Annex M Excursion envelopes
• Legend: − A: Excursion envelope for failure mode analysis (elliptic) (Side- and offlead in 1m significant wave height) − B: Excursion envelope for offshore lift mode (elliptic) (Side- and offlead in 6m significant wave height) − C: Excursion envelope for entanglement situation within the offshore lift mode (Circle radius 50m) (Full capacity end termination may be used if outside radius.)
AOPS/Gross Overload Conditions (From Supply B oat Entanglement) EN 13852-1:2013 •
•
If there is a risk of failure of components during activation of AOPS, e.g. winch motor bursting due to over speeding, the resulting forces shall not exceed significant damage load, and adequate protection shall be provided to prevent harm to personnel due to bursting or ejected parts etc.
When the system is activated, the crane shall maintain a retaining force at the hook sufficient to suspend a load corresponding to the rated capacity for on-board lift. ~=110% SWL
API 7th Edition •
Considers supply boat entanglement an extremely rare but serious event with special attention required
•
Equipment damage considered acceptable in this rare catastrophic event
•
Accomplished through failure mode assessment showing structure holding operator’s cabin will not be first to fail in any condition
•
Considers hazards created by AOPS to be worse than the potential benefits
Risk for entanglement sit uations during off-board lif ts
Response time EN13852-1:2013 The maximum response time for the main motions shall be as given i n Table 2. Table 2 — Maximum response time EN13852-1: 2013: Hoisting 2s
Luffing , folding, telescoping 3s
Slewing 4s
• EN13852-1: 2004: Table 1 — Maximum respo nse tim e Hoisting 2s
Luffing, folding, telescoping 2s
Slewing 2s
