Aker Drill Floor Lifting Equipment
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Transcript of Aker Drill Floor Lifting Equipment
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NORSOK R-002, Annex D - Lfteutstyr i boreomrdet
Bergen : 11-12 Desember 2012
Sverre Chr. Srensen - Technical Advisor, Techano AS
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Techano AS min nye arbeidsplass.
18 November, 2012 Slide 2
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2012 Aker Solutions Preferred partner 18 November, 2012 Slide 3
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NORSOK R-002 - Stikkord for gjennomgang :
18 November, 2012 Slide 4
Annex D
Lifting equipment in the drilling area:
Lfteutstyr i boreomrdet:
Regelverkskrav i Annex D
Sikkerhetsfilosofi
Definisjoner utvidet for Annex D
Gjennomgang av gruppene
D1-D7
Annex C.17
Special designed lifting accessories in the drilling area (Group R 10)
Spesielle lfteredskap i boreomrdet
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R-002
Clause 1 - 5
DNV OS-E101
Drilling Plant
Chapter 1
Chapter2
API Spec. 8C
Drilling and Production Hoisting
Equipment
Alternative for Structural Parts
EN 13001 series
Standard for Certification No. 2.22
DnV Lifting Appliances
Functional Requirements:
NORSOK D-001
Drilling facilities
FEM 1.001, 3rd edition 1998,
Rules for the design of hoisting
appliances
R-002 Annex D
Regelverkskrav
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Sikkerhetsfilosofi:
Machinery directive (2006/42/EC) Maskindirektivet
ATEX directive (94/9/EC) ATEX direktivet
LVD (2006/95/EC) Lavspenningsdirektivet
EMC directive (2004/108/EC) Elektromagnetisk kompatibilitet
PED (97/23/EC) Trykkdirektivet
18 November, 2012 Slide 6
Uavhengig av om lfteutstyret er plassert p en fast plattform
eller en flyterigg skal sikkerhetsfilosofien vre basert
p gjeldende sikkerhetskrav nedfelt i relevante EU direktiv, f.eks. :
Administrative krav i direktivene er ikke en del av R-002, f.eks.:
Administrative krav i direktivene er ikke en del av R-002, f.eks.:
CE merking
Samsvarserklring
EC Typegodkjennelse P faste rigger m selvflgelig ogs de administrative kravene oppfylles
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Maskindirektivet :
Gjelder ved konstruksjon,
bygging og omsetning av
flgende produkter:
Fr en maskin settes i
omsetning skal produsenten
eller dennes representant sikre:
18 November, 2012 Slide 7
Vanligvis brukes harmoniserte standarder for samsvarsvurderingen, f.eks :
Sikkerhets analyse basert p EN12100:2010.
Maskiner Utskiftbart utstyr Sikkerhetskomponenter Lfteredskap Kjetting, kjeder, tau og stropper Avtakbare mekaniske
kraftoverfringsinnretninger
Delvis ferdigstilte maskiner
At maskinen oppfyller krav til helse og sikkerhet
At teknisk dokumentasjon er tilgjengelig
At ndvendig bruksanvisning er tilgjengelig
Gjennomfring av en samsvarsvurdering
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ATEX- direktivet : Elektrisk utstyr
18 November, 2012 Slide 8
Vanligvis brukes harmoniserte standarder for samsvars-vurderingen, f.eks :
EN 13463-serien - Non-electrical equipment for use in potentially explosive areas
Skal leveres med ATEX sertifikat for aktuell sone
Skal vurdere og dokumentere at utstyret er i samsvar med kravene i
forskriften. Tennkilde vurdering - Ignition Hazard Assessment (IHA)
Gjelder f.eks.overflatetemperatur, gnistdannelse, statisk elektrisitet
Skal leveres med ATEX sertifikat hvis komponenten er utstyrt med
elektriske innretninger.
Rene hydrauliske komponenter vurderes i IHA
Mekanisk utstyr
Hydraulisk utstyr
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Definisjon:
Lifting Equipment - Lfteutstyr
3.1.21
Lifting equipment
Common term for all equipment covered by the scope of this standard.
Lfteutstyr
Generelt begrep for alt utstyr dekket av denne standarden.
Eksempel:
Dekker bde lfteinnretninger og lfteredskap/lftekomponenter.
18 November, 2012 Slide 9
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Definisjon:
Lifting Appliance Lfteinnretning:
3.1.19
Lifting appliance
Machine or device used for vertical movement of a load, with or without horizontal movement.
Lfteinnretning
Maskin eller innretning som beveger en last vertikalt, med eller uten en samtidig horisontal bevegelse.
Eksempel:
Kraner
Skrstilt Matebord (Tubular feeding machine) som kjrer borerr opp en skrbakke.
18 November, 2012 Slide 10
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Definisjon:
Lifting components- Lftekomponenter:
3.1.20
Lifting components
Components used as integral parts of lifting appliances and/or as part
of lifting accessories.
NOTE: In some cases, lifting components may be lifting accessories on
their own.
Lftekomponenter
Komponenter som er brukt som en integrert del av en
lfteinnretning og/eller som en del av et lfteredskap.
NOTE: I noen tilfeller kan lftekomponenter vre lfteredskap i seg selv.
Eksempel :
Wire, sjakkel og krok som en del av en kran.
Wire, sjakler, ringer som deler til oppbygging av et lfteredskap
18 November, 2012 Slide 11
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Definisjon: Lifting Appliance - Lfteinnretning
Tilleggsdefinisjon for Annex D :
The term lifting appliances also include the load bearing parts of
the drilling machine where the
drilling machine is connected
when lifting the drill string,
tubulars or other loads,
Begrepet Lfteinnretning inkluderer ogs de
lastbrende deler av DDMen hvor den lfter borestrengen,
rr og andre laster.
18 November, 2012 Slide 12
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Gjennomgang av Gruppene D1 D7
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Conventional Drawwork Group D.1 - Overview
18 November, 2012 Slide 14
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Group D1 Lfteutstyr vist i skissen
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Annet utstyr vist i skissen Lfteutstyr henviser til annen gruppe.
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Conventional Drawwork Group D.1
Hoisting equipment (API 8C)
1. Drawwork
2. Fastline wheel
3. Crown block
4. Deadline wheel
5. Travelling block
6. Drilling line
7. Deadline anchor
8. Derrick drilling machine
(DDM)
18 November, 2012 Slide 17
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Conventional Drawwork Group D.1
Typisk Drawwork fra Aker Wirth.
18 November, 2012 Slide 18
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Hydraulic operated drawwork
Group D.2
18 November, 2012 Slide 19
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Group D2 Lfteutstyr vist i skissen
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Annet utstyr vist i skissen ikke definert som lfteutstyr.
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Hydraulic operated drawwork Group D.2
18 November, 2012 Slide 22
Hoisting equipment (API 8C)
1. Hydraulic Lifting Cylinders
2. Accumulators
3. Travelling Yoke
4. Yoke sheaves
5. Wire Rope
6. Wire rope anchor
7. Derrick drilling machine
(DDM)
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Hydraulic operated drawwork Group D.2
Dual Ram Rig installation
18 November, 2012 Slide 23
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Derrick Drilling Machine (DDM)
18 November, 2012 Slide 24
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General load paths DDM
18-Nov-12 Slide 25
The DDM has two loadpaths
One for tripping/hoisting (through elevator)
One for drilling (through threaded connection in shaft)
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Interpretation of API
18-Nov-12 Slide 26
From Chapter 9.9.5 of API 8c :
Rotary swivel-sub connection The connection shall comply with the
applicable requirements, including gauging and marking, as specified in API 7-1 and API 7-2.
The interpretation considers the tripping load path to be calculated according to API 8c
Lower connection of drilling load path to be calculated according to API 7-1 and API 7-2.
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Hva er nytt i Group D.1 og Group D.2 ?
Conventional Drawwork (D.1)
Definert som en Complex Lifting
Appliance.
Hydraulic operated Drawwork (D.2)
Definert som en Complex Lifting
Appliance.
Komponenter som direkte
kontrollerer lasten f.eks hydrauliske lastholdeventiler og
blokker. Disse skal designes som
om de var en del av selve
sylinderen. Gjelder materialvalg,
sikkerhetsfaktor og krav til
trykktesting.
Funksjonen til disse blokkene skal
analyseres spesiellt grundig i
sikkerhetsanalysen.
18 November, 2012 Slide 27
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Complex Lifting Appliance (CLA)
Definition:
Power driven lifting
appliances with high capacity
and/or high risks.
Exempler : Offshore cranes
BOP cranes
Drawworks
Launching appliances for lifeboats
Tower cranes
Mobile cranes etc.
Definisjon:
Kraftdrevet lfteinnretning med
hy lftekapasitet og / eller hy
risiko.
Ekstra krav til CLA: Sikkerhetsanalyse skal
utarbeides p komponent niv.
F.eks . FMECA som beskrevet i
IEC 60812.
Hvis hensiktsmessig s skal
vedlikeholdsprogrammet
utarbeides p komponent niv.
F.eks. RCM som beskrevet i IEC
60300-3-11.
Fire and gas detection ihht
NORSOK S-001 (as applicable)
Safety related parts of control
systems ihht ISO 13849-1.
Informasjon ang. opplring av
operatrer og vedlikeholds-
pesonell skal ta hensyn til de
lokale forhold p installasjonen.
18 November, 2012 Slide 28
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Group D.3 - Vertical Pipehandling (VPH) machines
18 November, 2012 Slide 29
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Group D.3 - Vertical Pipehandling (VPH) machines
Bridge Crane (BRC)
Lower Guiding Arm (LGA)
Fingerboards (FB)
Bellyboard (BB)
18 November, 2012 Slide 30
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Group D.3 - Vertical Pipehandling (VPH) machines
Bridge crane :
Bridge Travel
Trolley Travel
Slewing
Stand Lift cylinder and soft
stabbing
Gripper head
18 November, 2012 Slide 31
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Group D.4 - Horizontal to vertical (HTV) pipe handling machines
18 November, 2012 Slide 32
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Group D.4 - Horizontal to vertical (HTV) pipe handling machines
18 November, 2012 Slide 33
Tubular Feeding Machine (TFM)
Stand Builder Arm (SBA)
Mouse Hole 45 and 60 (MH)
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Group D.4 - Horizontal to vertical (HTV) pipe handling machines
18 November, 2012 Slide 34
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Hva er nytt i Group D.3 og D.4 - Pipehandling?
Vertical Pipehandling (VPH) (D.3)
Normalt Dynamisk faktor 1.3 1.6
avhengig av stivhet.
Hyere for Mouse holes 2.0
Krangruppe forslag: Racking equipment - A5
Manipulator arms - A4/A5
Mouse hole - A2
Bridge crane som del av VPH
systemet bruk samme regelverk som VPH.
Horizontal to Vertical (HTV) (D.4)
Normalt Dynamisk faktor 1.3 1.6 avhengig av stivhet.
Hyere for Tubular feeding machine
under plasting 1.8
Krangruppe forslag:
HTV machines - A4
18 November, 2012 Slide 35
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Group D.5 X-mas tree / BOP handling systems
18 November, 2012 Slide 36
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BOP Crane
18 November, 2012 Slide 37
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Hva er nytt i Group D.5 - X-mas tree/BOP handling systems ?
Gantry type BOP kran skal designes ihht G.4 samt kravene i
Annex D. (Bridge and Gantry Cranes - EN 15011)
BOP kran er definert som en Complex Lifting Appliance.
Krangruppe forslag:
BOP handling systems - A2 / A3
BOP kraner skal utstyres med en Rated Capacity Indicator
ihht EN 12077-2
Hvis lasten lftes med mer enn en lfteinnretning s skal
hver enhet ha individuell mling og avlesning av lasten.
18 November, 2012 Slide 38
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Group D.6 Miscellaneous lifting equipment in the drilling area
18 November, 2012 Slide 39
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Miscellaneous lifting equipment in the drilling area (Group D.6)
D.9.1 Manrider winch
See Annex G.7.3
D.9.2 Man riding harness
See Annex C, 11.4 Group R11
D.9.3 Access basket
See Drilling plant Ch 2. sec.5 I Man riding equipment and relevant requirements in EN 280
D.9.4 Casing stabbing board:
See Drilling plant Ch 2. sec.5 I Man riding equipment and relevant requirements in EN 280
D.9.5 Utility winch
See Annex G.7
D.9.6 Guideline winches
See Annex G.7.1
D.9.7 Wireline equipment
See Annex G (G7 or G20)
D.9.8 Tong lift system
See Lifting appliances 2.22
D.9.9 Escape line
See Annex A Group E5
Se litt nrmere p hva er nytt i
G.13 Power driven winches and hoists (Group G7)
G.13.1 Design of power driven winches
G.13.3 Design of man rider winches
18 November, 2012 Slide 40
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G.13.1 Design of power driven winches Group G7
Power driven winches shall be in accordance with EN 14492-1, using the design
criteria given in G.3.
Power driven winches shall be equipped with a visual indication of the actual load
during lifting operation.
NOTE An analogue pressure gauge may satisfy this requirement. The accuracy of the
indicating device may be within +/- 10 % of the rated capacity for winches with rated
capacity less than 20 tonnes. For winches with rated capacity of 20 tonnes and more the
tolerance may be within +/- 15 %.
If the winch operator is unable to see the winch from the operator position a drum
motion indicator shall be arranged at the operator position.
Power driven winches shall be equipped with a spooling device with tensioning system
to avoid rope wire on the drum. (Drlig formulert)
Winches intended for sub sea operations shall comply with G.12.4.
18 November, 2012 Slide 41
Konklusjon: En grov lastindikator visuell visning av aktuell last under lfteoperasjonen.
Operatren m vite om trommelen beveger seg.
Spolesystem + sikre stram wire inn p trommel.
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Manrider Winch Hva er nytt i R-002 ?
G.3.7 Lifting of persons
For the lifting of persons, the methods of decreasing the probability of failure in accordance with EN 13135-2, 5.12.3.2, shall be applied.
The risk coefficient n for cranes designed for the lifting of persons, shall be minimum 1,5.
The required performance level for cranes lifting personnel shall be d in accordance with ISO 13849-1.
See also item 5.9 and annex K High risk applications.
EN 13135-2, 5.12.3.2
Typical methods of decreasing the probability of failure.
Se neste slide.
18 November, 2012 Slide 42
Konklusjon:
Bruk safety factor 2 som spesifisert i Drilling Plant
Peker p viktige vurderinger som m gjres
Fra R 002, G13.3 Design of man rider winches
Man rider winches shall be designed in accordance with DNV Offshore standard DNV-OS-E101 Ch.2 Sec. 5 I using the design criteria given in G.3 (except for risk coefficient n=1,5)
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Manrider Winch Hva er nytt i R-002 ?
EN 13135-2,
5.12.3.2 Typical methods of decreasing the probability of failure
The methods of decreasing the probability of failure of the hoist mechanism are typically:
a) upgrade the level of quality control in some or all points of the process, e.g. enlarge
the scope of non- destructive testing, mark parts for traceability of material;
b) increase the inspections and maintenance during the crane use, e.g. upgrade the
criteria for replacing parts, define shorter inspection intervals, use a condition monitoring
system and/or use a stress or load history counter;
c) increase the working coefficient of components in the kinematic chain;
d) duplicate components in the kinematic chain which prevent the load from being
dropped in the event of single failure in that component. These additional components
are part of kinematic chain during normal use.
18 November, 2012 Slide 43
Konklusjon:
Fokus p QA og NDT
Under operasjon : Inspeksjon og Vedlikehold hyppigere utskifting av deler ?
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Manrider Winch Hva er nytt i R-002 ?
From Drilling Plant:
404 Brakes
.1 The winch shall be fitted with 2
separate, independently operated
braking systems, of which one is
considered as parking brake and the
other as operational brake. Each
brake shall be capable of stopping
and holding the load upon activation.
Guidance note:
The motor of the winch normally
satisfies the requirements for
operational brake.
18 November, 2012 Slide 44
Konklusjon:
M ha to uavhengige bremser i tillegg til motoren.
Fra R-002, G.13.3 Design of manriding winches:
b) the guidance note in Ch.2 Sec. 5 I 404.1 is not acceptable;
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Manrider Winch Hva er nytt i R-002 ?
207 Wire-fitted systems where slack wire may be critical shall for all operating modes be provided with slack wire detection, which initiates automatic stop when activated.
Unless other means are proven to be safer, deactivation of this system shall only be possible directly on the winch, and in the presence of an operator, i.e. the detection system shall automatically re-activate when operator is no longer present at the winch.
Guidance note:
Slack wire detection may be waived for e.g. systems operated locally for which a possible slack wire situation is easily detected visually by the operator. This further requires that the operator has a clear view of the person being lifted at all times.
18 November, 2012 Slide 45
Konklusjon:
M alltid ha Slack wire detection.
From R-002, G.13.3 Design of man rider winches:
c) the Guidance note in Ch. 2 Sec. 5 I 207 is not acceptable
From Drilling Plant :
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Manrider Winch Hva er nytt i R-002 ?
310 The system shall be provided
with means which will
automatically stop lifting outside
the safe operating limits.
Guidance note:
This may be provided e.g. by
means of limit switches.
18 November, 2012 Slide 46
Konklusjon:
Ekstra Back up krokstopp opp og ned.
d) man riding winches shall have independent backup motion
limiters in addition to those required by Ch. 2 Sec. 5 I 310 for both
lowering and hoisting;
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Manrider Winch Hva er nytt i R-002 ?
5.15.3
Her beskrives generellt hva som menes med et EOS system.
G.4
The EOS shall be operational within 1 min from standstill of the normal operation system, and the crane operator has initiated the EOS.
18 November, 2012 Slide 47
Konklusjon:
Ndkjrings-systemet skal vre operativt i lpet av 1 minutt.
f) an emergency operation system (EOS) shall be provided in accordance with 5.15.3 and G.4 for immediate operation at power failure or failure in control system. A system operated only by hand power (e.g. crank system) may be acceptable if the requirements are fulfilled;
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Preferred partner
NORSOK R-002, Annex C (Group R10) C17 - Special designed lifting accessories in the drilling area (SDLA)
Spesielle Lfteredskap I boreomrdet
Bergen : 11-12 Desember 2012
Sverre Chr. Srensen - Technical Advisor, Techano AS
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Group D.7 Drilling Lifting accessories
18 November, 2012 Slide 49
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Drilling lifting accessories (Group D.7)
D.10.1 One component miscellaneous lifting tools
See Annex C, Group R10
D.10.2 Miscellaneous lifting tools
See Annex C, Group R10
D.10.3 Miscellaneous slings
See Annex H, Foundation and suspensions, Annex C
D.10.4 Elevator
See Annex C, Group R10
D.10.5 Elevator links
See Annex C, Group R10
From Group R10
Special designed lifting accessories in the drilling area, hereafter referred to as SDLA, comprises, but is not limited to, the following equipment:
elevators;
elevator links (bails);
handling tools;
running tools;
hanger tools;
lifting nipples;
lifting caps;
lifting subs.
NOTE As a reminder, reference is made to C.1 regarding application of this NORSOK standard in its entirety.
Reference is also given to Annex D clause D.1 for interpretation of the term Lifting accessories in the drilling area.
18 November, 2012 Slide 50
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Definisjon:
Lifting accessories - Lfteredskap:
3.1.18
Lifting accessories
Components or equipment used between the lifting appliance and the load or on the load to grip it, but which is not an integrated part of the lifting appliance.
NOTE :The term lifting accessories equals lifting gear as defined by ILO Convention 167 and NORSOK R-003/R-005 and loose gear as defined by ILO Convention 152.
Lfteredskap
Komponenter eller utstyr som er montert mellom lfteinnretningen og lasta - eller p lasta for anhuking av lasta, men som ikke er en integrert del av lasta.
Eksempel: Lftek, kjetting, slings etc.- Se Annex C, Group 11
18 November, 2012 Slide 51
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Definisjon:
Lifting components- Lftekomponenter:
3.1.20
Lifting components
Components used as integral parts of lifting appliances and/or as part of lifting accessories.
NOTE: In some cases, lifting components may be lifting accessories on their own.
Lftekomponenter
Komponenter som er brukt som en integrert del av en lfteinnretning og/eller som en del av et lfteredskap.
NOTE: I noen tilfeller kan lftekomponenter vre lfteredskap i seg selv.
Eksempel :
Wire, sjakkel og krok som en del av en kran.
Wireslings, sjakler, ringer som deler til oppbygging av et lfteredskap
18 November, 2012 Slide 52
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Tilleggsdefinisjon for Annex D:
Lifting accessories Lfteredskap:
18 November, 2012 Slide 53
The term lifting accessories also includes the load bearing equipment used to connect the drill pipes, tubulars or other loads to
the drilling machine or other lifting appliances. Requirements for
lifting accessories in the drilling area are given in Annex C, see
references given for groups D.6 and D.7
Begrepet Lfteredskap inkluderer ogs det lastbrende utstyret som er brukt for kople sammen borerr, rr og andre
laster til boremaskinen eller en annen lfteinnretning. Krav til
lfteredskap i boreomrdet er gitt i Annex C, se referanser
under Gruppene D.6 og D.7.
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Group R10 - C.17
Special designed lifting accessories in drilling area (SDLA)
18 November, 2012 Slide 54
From Annex D, D.1 General (Group D)
NOTE
Typical lifting accessories in drilling operations: Elevators, lifting nipples,
lifting caps, lifting subs, pup joints for lifting, running tools used for lifting, lifting
tools, handling tools, etc.
The drill string, pup joints, casings, risers and down hole equipment, however,
are regarded as parts of the load in drilling operations.
Equipment used for lifting solely within casings and risers in well centre, may
be considered as not being lifting accessories.
However, when such equipment is intended for handling loads outside of the
well centre it shall be regarded as lifting accessories and be rated for a
working load limit corresponding to the load experienced when used for lifting
outside of the well.
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Group R10 - C.17
Special designed lifting accessories in drilling area (SDLA)
18 November, 2012 Slide 55
From Annex D, D.1 General (Group D)
NOTE:
Typiske lfteredskap I boreomrdet:
Elevators, lifting nipples, lifting caps, lifting subs, pup joints for lifting, running
tools used for lifting, lifting tools, handling tools, etc.
The drill string, pup joints, casings, risers and down hole equipment betraktes imidlertid som deler av lasten under boreoperasjoner.
Utstyr som kun brukes til lfte lasten internt i foringsrr (casing) og stigerr
(riser) i brnn-senter kan betraktes som ikke vre lfteredskap.
Hvis hensikten med slikt utsyr er hndtere last utenfor brnn senter skal det
imidlertid betraktes som lfteredskap og vre beregnet for en WLL
tilsvarende den lasten som lftes nr det er brukt utenfor brnn senter.
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Drilling lifting accessories (Group D.7)
Pipehandler
18 November, 2012 Slide 56
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Riser Handling Tool
18 November, 2012 Slide 57
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Group R10 - C.17 Special designed lifting accessories in drilling area (SDLA)
18 November, 2012 Slide 58
C.17.3.1 Design
SDLAs shall comply with the requirements given in the references
in general requirements as applicable.
Although not mentioned in the scope of ISO 13535, the requirements
given in that standard apply to all types of SDLAs, unless stricter
requirements are given in the other references in general requirements.
All types of SDLAs shall be designed for one or more specified working
load limit(s) (WLL).
NOTE The term Working Load Limit in this NORSOK standard is equivalent with the term Safe working load in ISO 13535.
Konklusjon :
Krav i ISO 13535 (API 8C) gjelder for SDLAs Beregnet for en eller flere WLL
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Group R10 - C.17 Special designed lifting accessories in drilling area
18 November, 2012 Slide 59
C.17.3.1 Design (forts.)
If it is possible to use the SDLA for picking up tubulars or other loads
from a horizontal position, the workig load limit (WLL) for the SDLA
shall be specified for the most unfavourable direction.
Alternatively, different WLLs may be specified for horizontal and
vertical positions.
For the purpose of calculating the WLL according to this NORSOK
standard, the design load according to ISO 13535 shall be divided by
a dynamic coefficient of 1,33.
Konklusjon:
WLL skal spesifiseres for den mest ugunstigste pick-up posisjon.
WLL = design load according to ISO 13535 divided by 1.33.
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Group R10 - C.17 Special designed lifting accessories in drilling area
18 November, 2012 Slide 60
Definisjoner fra ISO 13535 (API 8C)
3.1.2
Design load
Sum of static and dynamic loads that would induce the maximum allowable
stress in an item.
3.1.9
Load rating
Maximum operating load, both static and dynamic, to be applied to the equipment.
NOTE The load rating is numerically equivalent to the design load.
3.1.17
safe working load
The design load minus the dynamic load.
Begrunnelsen for faktor 1.33 er basert p DnV-Lifting Appliances som sier
Design load skal vre den strste av disse to:
0.75 x x SWL, and SWL For at disse skal bli like m dynamisk faktor vre = 1/0.75 = 1.33
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2012 Aker Solutions Preferred partner
Takk for meg !
18 November, 2012 Slide 61
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2012 Aker Solutions Preferred partner
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18 November, 2012 Slide 62