Wire rope sling manufacture for the offshore industry in...

Wire rope sling manufacturefor the offshore industry in Angolafor the offshore industry in Angola

1 May 2011

Table of content

1. Presentation1. Presentation

2 Review of norms and standards2. Review of norms and standards

3 Ho to chose a lifting set ?3. How to chose a lifting set ?

4. Our range of services

5. FAQ

22Contact:[email protected]+244 923 678 609

Our Organization

ORTEC Group Key Figures

4000 employees in France4000 employees in France6000 employees worldwide900 M$ turnover in 2010Present on over 300 client sites16 subsidiaries in 12 countries70 t bli h t i F70 establishments in FranceMain activities:

MaintenanceConstruction worksEnvironmentEnergyEngineeringIndustrial cleaning

2 branches in Angola since 1997

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2 branches in Angola since 1997Contact:[email protected]+244 923 678 609

Our Organization

ORSLING history

1997:Creation of FRIEDLANDER Angola1997:Creation of FRIEDLANDER AngolaOnshore and offshore activities for Oil & Gas

Fabrication of DNV 2.7-1 certified equipmentsq pNeed for corresponding lifting sets

2007: Creation of ORSLING(as brand belonging to FRIEDLANDER Angola) in order to respond internally to the need

fEnd of 2010: Fabrication workshop moved with FRIEDLANDER new construction yard within SONILS base

5 people permanent team


Basic definitions

1 l li 4 l li ith h kl

Components of a lifting set

1 leg sling 4 legs sling, with shackles

Top link (triple)Soft eye termination Hard eye termination (without thimble) (with thimble)

p ( p )

Marking plate

2 legs sling, with hooks

Top link (simple)Wire rope

Ferrule

Thimble

Shackle


Basic definitions

Technical terms

WLL: (Working Load Limit) maximum weight that the accessory is allowed to lift (in metric tons orWLL: (Working Load Limit) maximum weight that the accessory is allowed to lift (in metric tons or in kg)

BL: (Breaking Load) minimum force needed to break a cable (in N or in kN)

R ti T t l f t i ith t th lifti t ( T + P l d)Rating: Total mass of a container without the lifting set (= Tare + Payload)

Tare: Mass of the container when empty

Payload: Maximum mass that can be transported by a container (P= R-T)

Fore runner / top leg: Single leg sling used to elongate a 4 legs sling (the assemble can be referred as 5 legs sling), often used for DNV 2.7-1 lifting set fabrication to allow the top link to arrive at the correct elevation

Angle: Unless otherwise notified, the angle used to define a sling is always the angle between one leg and the vertical (in degrees)

Swaging: Method of assembly by pressing a ferrule containing the cable between dies of specificSwaging: Method of assembly, by pressing a ferrule containing the cable between dies of specific dimensions

DAF: (Dynamic Amplification Factor) Enhancement factor of the WLL to take the movement of the load into account

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load into accountContact:[email protected]+244 923 678 609

Basic definitions

Applicable norms and standards

Di i i d f b i tiDimensioning and fabrication:

DNV 2.7-1 Standard for certification of offshore containersEN 12079 2 E N ( f DNV 2 7 1)EN 12079-2 European Norm (copy of DNV 2.7-1)DNV 2.7-3 Standard for certification of portable offshore unitsEN 13414-1 European Norm for wire rope sling manufactureEN 13414 1 European Norm for wire rope sling manufacture

Choice of accessories:

EN 13411-3 European Norm for swaging and choice of thimbleEN 1677 European Norm for component for slingsEN 13889 European Norm for shacklesEN 12385 European Norm for steel wire ropes


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5. FAQ


DNV 2.7-1 / EN 12079-2 reviewLimitations:

Maximum rating is 25TThe DNV 2.7-1 standard corresponds only to offshore containers p yfabrication, but the part concerning the lifting sets is often used as reference for the fabrication of slings for other offshore equipmentsEnhancement factor to be applied for the calculation of the WLL (see table 8-1 at right side)Minimum WLL = 7 000 kgCertified process of fabricationTop link dimension: recommended > 270 x 140mmWhen unloaded, the top link must not be above 1300mm from the pfloorMaximum angle of a sling with vertical = 45°The shackles from a lifting set can not be separated from the g pslingHard eye assembly onlySpecific marking

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Specific marking


EN 13414-1 reviewLimitations:

Wire rope sling fabrication, from 8 to 60mmSpecific markingp gSwaging conform to EN 13411-3WLL to be calculated for angles from 0° to 45° from vertical (and from 45° to 60° for some specific assemblies)p )The weakest part must be the cable, not the top linkShackles must have higher WLL than the leg they are connected toCalculation of the WLL for usual cases:Calculation of the WLL for usual cases:

For 1 leg sling: WLL = (BLmin x KT) / (g x ZP), with:

BLmin = Minimum Breaking Load of the cable (given by the supplier)

ZP = 5 (safety factor)

g = 9.80665 N/kg

KT = termination coefficient (0.9 for swage assembly)

For multi legs sling: WLL = (BLmin x KT x KL) / (g x ZP), with:

KL = coefficient for leg number and angle = Nlegs x cos(β), with β = 45°

KL = 1.4 for 2 legs slings, and KL = 2.1 for 3 and 4 legs slings (4 legs slings are calculated as 3 legs slings)


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5. FAQ


How to chose a lifting set ?Number of legs:Number of legs:

Given by the design of the equipment to lift

Requested certificationOffshore or onshore ?

One time lift for installation or movable equipment ?

Company specificationsCompany specifications

Calculation of the minimum WLL of the slingWeight of the equipment to lift

DAF to apply (generally given by Company specification)Example: in TOTAL specifications, DAF = 1.30 for offshore lifting (<150T), and DAF = 1.10 for onshore

Use of a spreader bar:Use of a spreader bar:Can lower the stress on the equipment during lifting

Can reduce the length of the sling

C ll b tt t l f th lifti ( i ll f l f b i t )Can allow better control of the lifting (especially useful for subsea equipments)

May modify the stability of the equipment (to be checked in every particular case)

Must be subject to specific calculation note

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j p


How to chose a lifting set ?

WLL calculation

Wirerope Breaking StandardWireropeDiametre

(mm)

Breaking Load *(kN)

Single leg WLL (Tons)

2 legs WLL (Tons)

4 legs WLL (Tons)

Standard shackle

size (Tons)**13 109 2 2.83 4.24 2 or 3.2516 179 3.28 4.64 6.97 4.7518 226 4.15 5.86 8.80 4.7522 338 6.20 8.77 13.07 6.522 338 6.20 8.77 13.07 6.526 472 8.66 12.25 17.79 9.532 715 13.12 18.55 27.59 13.536 904 16 59 23 45 35 18 1736 904 16.59 23.45 35.18 1740 1120 20.55 29.06 43.59 25

WLL calculated for each diameter according to EN 13414-1U i t l bl 6 36 WS IWRS i d 1960 ith i l f 45°Using steel cable 6 x 36 WS + IWRS in grade 1960, with maximum angle of 45°* Figures from EN 12385-4, table 9 and Traction Levage catalog** Any bigger size of shackle can be used as long as it can enter the thimble

Never use smaller size unless a specific calculation note has been issued

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Never use smaller size unless a specific calculation note has been issued

Contact:[email protected]+244 923 678 609

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5. FAQ


Our range of services

Sling fabrication following EN 13414-1

Sling fabrication

Sling fabrication following EN 13414 1Aluminum ferrule assembly

Cable 6 x 36 grade 1960, in diameter 13, 18, 22, 26, 32, 36, 40mm

One to five legs slings

Hard or soft eyes

WLL from 2T to 20.55T for single leg slings

WLL from 4.24T to 43.59T for 4 legs slings

DNV 2.7-1 lifting setsCertified material and procedures

S ifi l l ti t lid t d b B V itSpecific calculation note, validated by Bureau Veritas

Third party certificates


Our range of services

Load test

Other services

Load testTest bench with 1 500 kN capacity

Destructive and non destructive tests

Third party certificates

EngineeringEquipment survey

Calculation notes for special lifting sets, like non symmetrical slings

Assistance to find the best solution for each case

Coordination with other departments from FRIEDLANDER Angola for fabrication of:

Spreader barsSpreader bars

Certified offshore containers (baskets, tool boxes, gas racks,…)

Offshore structural extensions


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5. FAQ


Some answers to the most frequent questions you have:

Why are you only using cables from diameter 18 to 32mm for DNV lifting sets ?Even for the low ratings, the minimum WLL is 7000 kg (DNV 2.7-1, table 8-1)

Reference to EN 13414-1 for the cable BLmin = (WLL x g x ZP) / (KT x KL) with:

ZP = 5 (safety factor)

9 80665 N/kg = 9.80665 N/kg

KT = 0.9 (for swage termination)

KL = 2.1

BLmin = 179 840 N for the cable of a 4 leg sling

18mm is the smallest cable size with BL > 179 840 N not allowed to use smaller

We use the same calculation for the maximum size, maximum rating is 25T, that gives a WLL

of 27 590 kg BLmin = 708 830 N

32mm is the smallest cable size with BL > 708 830 N no need to use bigger



What standards could I follow for a load > 25T as DNV 2.7-1 can’t apply?

First of all, the standard of each Company should apply

For onshore or one time lifting offshore, EN 13414-1 is most often used

DAF might be added for offshore use

DNV 2.7-3 Standard covers offshore equipments that are regularly lifted, up to 50T

No specific description of lifting sets

Reference to DNV 2.7-1 same lifting sets up to 25T

Above 25T, enhancement factor can be extrapolate at the constant value of 1.1

For other cases, a specific calculation note can be done for the lifting set



Can you certify an existing sling ?We can only make a certificate of conformity for our own manufactured products

Several issues occur to certify a sling fabricated by another manufacturer:What material was used ? It is not possible to check the steel grade of the wire rope by mere visual

inspection

How was it assembled ? The process of assembly and the quality control along it are critical for the

certification of the final product

Alternative: we can make a load test under third party surveyAlternative: we can make a load test under third party survey

Can you assemble a sling using our own material ?Yes, if the material is compatible with our fabrication process

But the certification of the assembly is subject to the material certificate

Can you modify an existing sling ?Only if the sling was manufactured by ORSLING (same issues as for certification)



Why should we work with ORSLING?Quality of our final product, coming from the quality of the materials we use, the training and

dedication of our personnel

Reactivity of our workshop for emergency fabrication we use to deliver urgent lifting sets on

the same day we receive the orderthe same day we receive the order

Fabrication inside SONILS base no delay for material delivery

Frame contract with Bureau Veritas reactivity for third party certificationy y

Adaptability to manufacture customized lifting sets

Pro-activity from our management and our engineering department to propose you the best

solution for your needs

Collaboration with other departments of FRIEDLANDER Angola to propose complete lifting

solutions like spreader bars or certified basketssolutions, like spreader bars or certified baskets

Local content: 100% up to the Operation Manager !


FRIEDLANDER AngolaFRIEDLANDER AngolaRua Commandante Kima KyendaBoavista LuandaEmail : [email protected] : +244 917 750 692ORSLINGEmail : [email protected] : +244 923 678 609

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Tel : +244 923 678 609

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