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2
LIFTING EQUIPMENT INSPECTOR
CERTIFICATION PROCEDURES
MODULE 2 : WINCHES & POWERED HOISTS
NSL 2004NSL LTD l T : +44 (0) 1224 208988 l E : [email protected] l WWW.NSL-UK.COM
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North Sea Lifting Ltd (NSL) & its subsidiary NSL America has, in recent years, invested well in
excess of Two and a half Million Pounds ($5,000,000) in the development of training productsand materials which in turn have been translated into the relevant languages required by the Oiland Gas Industry worldwide.
The creation of first-rate training products and materials involves extensive research, liaisingwith government bodies, attending fact-finding meetings both nationally and internationally,liaising with equipment manufacturers, gaining approvals where necessary, the use oftechnical authors, artists, cartoonists, employing full-time engineers and graphic designers,etc. In addition, a vast amount of time, effort and expense is incurred in keeping the trainingmaterials up-to-date, reflecting the latest legislation, regulations, guidelines, industry practiceand equipment.
The end products are of the highest quality, totally accurate and specific to the Oil and G a sIndustry which we serve.
We do, on request, customise our products to suit various clients needs butownership and copyright always remains with NSL i.e. on these occasions,clients are only charged for the customising. Occasionally, we allow clientsto adapt our products and materials for their own internal use but this mustbe authorised, in writing, by NSL. To prevent our products and materialsbeing used out of context and possibly relaying the wrong message, anyamendments must also be approved by NSL.
The instructors employed by NSL to deliver the training are specially
selected for their knowledge on the subject matter and theirability, not only deliver the training, but be able to answer anyquestions arising during the training courses. For this reason,NSLs instructors are trained internally and are also qualified skillsassessors.
We carry out practical training at our facilities in both Aberdeen UK &Broussard LA, USA. However, where we train on the clients premises,be it onshore, offshore or overseas, the facilities are vetted by NSL toensure that the training can be delivered effectively.
Our instructors are constantly updated with the latest information and
are issued with the most up-to-date media presentation equipment tofacilitate professional delivery of the training materials.
NSLs Safety and Training documents are not for resale nor are they to be used forpersonal / commercial gain by 3rd party training companys training courses. Thisincludes any reference to, or the use of NSLs Handbooks, Posters, Video/DVD,Viewgraphs, etc.
To maintain the overall quality of our training products and materials, they mustremain totally under our control and consequently, we vigorously enforce theircopyright. NSL will actively pursue through the courts, any company or individual foundin breach of this copyright.
Intellectual Ownership & Copyright of
NSL Training Products and Materials
w w w . n s l - u k . c omNSL AMERICA INC
2500 CITYWEST BLVD
SUITE 300
HOUSTON TX 77042
tel +1 (713) 405 1877
NSL LTD :
42 QUEENS ROAD,
ABERDEEN AB15 4YE UK
tel +44 (0) 1224 208988
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LIFTING EQUIPMENT INSPECTOR l MODULE 2 : WINCHES AND POWERED HOISTS lPROCEDURES
NSL 2004
INDEX
Introduction
2.1 Manual Winches2.2 Utility Winches
2.3 Man-riding Winches
2.4 Powered Hoists
2.5 Lifeboat / Liferaft Davit Winches
2.6 Report Examples
2.7 Blank Reports
2.8 Appendix
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LIFTING EQUIPMENT INSPECTOR l MODULE 2 : WINCHES AND POWERED HOISTS lPROCEDURES
NSL 2004
INTRODUCTION
The testing and inspection of lifting equipment shall only be carried out by a competent person. It is essential
that a competent person engaged in this work must be aware of current regulations, standards, best industry
practices and relevant company procedures.
Competence can only be achieved and recorded through training, experience and assessment in the workplace.
The inspector must act with the necessary degree of impartiality, be free from any external pressures or
influences, make decisions regarding the extent of testing requirements and issue certificates stating that the
lifting equipment is suitable, and if used correctly, safe to use during a specific period of time.
For the most part, it is unlikely that any one person or even company, will be able to provide the knowledge
and expertise required to test and inspect, the vast range of lifting equipment used in todays industries. The
inspector will need to utilise information from standards, regulations and manufacturers guidelines to ensure an
informed decision is made.
The inspection of lifting equipment by the competent person, will determine if it is fit for purpose. The criteria
used to determine this, must be applied to new and used equipment alike, the inspector must never assume new
equipment is free of patent defects.
The purpose of an overload or proof load test is to prove the design, materials used, and the workmanship during
assembly of the equipment. The sole use of calculations to prove the integrity of equipment may not accomplish
this. It should be borne in mind that lifting equipment undergoing an overload test, might not withstand the
applied loadings.
All personnel not essential to the test must be kept clear of the area, with the inspector also positioned, where heis unlikely to be injured if equipment fails.
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LIFTING EQUIPMENT INSPECTOR l MODULE 2 : WINCHES & POWERED HOISTS l MANUAL WINCHES
NSL 2004
2.1 : MANUAL WINCHES
EXAMINATION & TESTING PROCEDURE
Bolts Drum
Worm Gear
Handle
Frame
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LIFTING EQUIPMENT INSPECTOR l MODULE 2 : WINCHES & POWERED HOISTS l MANUAL WINCHES
NSL 2004
2.1 : MANUAL WINCHES
EXAMINATION PROCEDURE
Sight the original test certicate Ensure Safe Working Load and Identication numbers are legible and correspond with the test certicate
Examine winding handle, check for distortion and correct connection
Examine winch drum and check for distortion, wear or cracking (if accessible, examine rope anchorage
and ensure it is secure)
Where applicable, examine ratchet or worm gear and check for wear / broken teeth
Examine pawl and pawl spring / worm and check for wear / distortion
Ensure the pawl functions correctly and ensure the worm meshes correctly with the worm wheel
Examine winch frame and check for distortion, wear and cracking
Ensure the hold down bolts / welding / clamping is adequate and as far as possible, satisfy yourself that
the support steel work is capable of sustaining the winch under load
Should wire rope be tted, it must be examined
ADDITIONAL (SPUR GEARED WINCHES)
Visually examine the brake assembly and operate the winch handle to ensure it functions correctly
Examine all spur gears checking for alignment, wear on gear teeth, truing of gear shafts and smooth
running of bearings (where fitted)
Function check the winch through one complete revolution of the drum
If all satisfactory, record relevant details and issue report.
Record winch wire rope details (if fitted), including certificate number on winch examination report.
This procedure is to be followed as a guideline to NSLs minimum requirements.
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LIFTING EQUIPMENT INSPECTOR l MODULE 2 : WINCHES & POWERED HOISTS l MANUAL WINCHES
NSL 2004
2.1 : MANUAL WINCHES
PROOF LOAD TESTING
Proof load to be applied: 50% above SWL.Load to be applied in the same direction as the forces it would be subjected to under normal working conditions.
Before proof load testing, carry out a visual inspection to ensure no defects are present. Function check the
winch through one complete revolution of the drum.
Although the winch should be fully certified prior to reaching the worksite, once it has been sited and secured,
the anchorage of the winch has to be tested. This is normally achieved by applying a proof load to the anchorage
via the winch.
ACCEPTABLE METHODS OF TESTING
Carry out performance test at SWL before commencement of proof load
If satisfactory, use test weights or a test clock with suitable anchor point, apply a proof load of SWL + 50%
Sustain load and examine anchorage checking for deection / distortion
Release load and re-examine to ensure proof loading has not exposed any defects
Any welding should be N.D.T.D after load test
Re-examine after proof load testing to ensure this has not exposed any defects.
If all satisfactory, hard stamp with ID number, SWL and issue certificate.
This procedure is to be followed as a guideline to NSLs minimum requirements for a proof load test.
Live test weights should be weight-checked annually and be accurate to better than 1% of the nominal weight.
The accuracy of testing machines shall be in accordance with BS 1610 and BS EN 10002.
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LIFTING EQUIPMENT INSPECTOR l MODULE 2 : WINCHES & POWERED HOISTS l MANUAL WINCHES
NSL 2004
MANUAL WINCHES
JOB NO : CONDITIONS
MODEL : A = SATISFACTORY
SERIAL NO. : B = WORN BUT SERVICEABLE
SWL : C = CONDEMNEDPLANT NO : D = REPLACED
E = N.D.T.D
DESCRIPTION CONDITION COMMENTS
A B C D E
1 Handle
2 Drum
3 Ratchet wheel / worm wheel
4 Ratchet pawl / worm
5 Ratchet pawl spring
6 Winch frame
7 Friction discs
8 Spur Gears
9 Spur gear shafts
10 Bearing
11 Hold down bolts / clamps / welding
12 Support steel work
Tick relevant boxes / delete where applicable
SIGNED : ...................................................................................................................................................... DATE :.............................................
SATISFACTORY
REQUIRES REPAIR
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LIFTING EQUIPMENT INSPECTOR l MODULE 2 : WINCHES & POWERED HOISTS l UTILITY WINCHES
NSL 2004
2.2 : UTILITY WINCHES
EXAMINATION & TESTING PROCEDURE
Controls
Rope guard
BaseBrake
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LIFTING EQUIPMENT INSPECTOR l MODULE 2 : WINCHES & POWERED HOISTS l UTILITY WINCHES
NSL 2004
2.2 : UTILITY WINCHES
EXAMINATION PROCEDURE
Sight the original test certicate Ensure Safe Working Load and Identication numbers are legible and correspond with the test certicate
Conrm controls operate in the direction that arrows are marked
Examine rope guard and ensure there is no damage / distortion which may obstruct and / or abrade the
winch rope
Examine winch drum and check for wear, distortion or cracks
Examine brake bands / brake drums and check for wear
Ensure the brake bands / brake drums are clean and free from contamination
Where tted, examine the automatic brake checking springs, link arms and pins
Examine automatic brake cylinder and check for leaks
Examine chromed piston rod and check for corrosion
With power disconnected, check that all operating levers return to neutral when released
Ensure directional arrows / markings are in place and clearly visible
Check oil level
Examine winch base and check for cracked welds, cracks around bolt holes, distortion or impact damage
Anchorage: Ensure the hold down bolts / welding / clamping is adequate and as far as possible, satisfy
yourself that the support steel work is capable of sustaining the winch under load
Check that the power supply is adequate for that particular model of winch
Connect power supply and function test the winch
Should wire rope be tted, it must be examined
If all satisfactory, record relevant details and issue report.
Record winch wire rope details (if fitted), including certificate number on winch examination report.
This procedure is to be followed as a guideline to NSLs minimum requirements.
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LIFTING EQUIPMENT INSPECTOR l MODULE 2 : WINCHES & POWERED HOISTS l UTILITY WINCHES
NSL 2004
2.2 : UTILITY WINCHES
PROOF LOAD TESTING
Load to be applied in the same direction as the forces it would be subjected to under normal working conditions.Before proof load testing, carry out a visual inspection to ensure no defects are present. Function check the
winch through at least one complete revolution of the drum
The winch may well be fully certified prior to reaching the worksite, once it has been sited and secured, the
anchorage of the winch has to be tested. This is normally achieved by applying a proof load to the anchorage via
the winch.
Comply with company procedures to determine the type of load test required.
ACCEPTABLE METHODS OF TESTING
Bolt down winch to suitable test bed and t a wire of such length that no fewer than ve turns remain on
drum during any part of the test
TEST 1
Carry out performance test at SWL before commencement of proof load
If satisfacory, raise a proof load of the SWL + 25% to the required height to allow one full rotation of drum
under load This test can be simulated on a hydraulic test bed where a variable pressure relief valve has been tted
Apply manual brake to sustain load and check winch drum for creep
NOTE
When testing winches with an automatic brake on a hydraulic test bed, there will be a slight drop in load
due to the time it takes for the brake to activate
TEST 2
Disconnect power source to winch and apply brake
Using an alternative pulling source i.e. pull lift / chain hoist on the winch rope, apply a proof load of SWL
+ 50% to check the braking efciency. (The brakes may require adjusting to achieve this)
Sustain the load for a short time and check winch drum for creep
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LIFTING EQUIPMENT INSPECTOR l MODULE 2 : WINCHES & POWERED HOISTS l UTILITY WINCHES
NSL 2004
TEST 3
Re-connect power supply to winch and pull up to SWL
Ensure the brake has not been over tightened to such an extent as to affect the winchs performance
ENSURE ALL LEVERS / CONTROLS RETURN TO NEUTRAL ON RELEASE
The above tests are to be witnessed.
Re-examine winch to ensure that proof load testing has not exposed any defects.
If all satisfactory, hard stamp with ID number, SWL and issue certificate.
This procedure is to be followed as a guideline to NSLs minimum requirements for a proof load test.
Live test weights should be weight-checked annually and be accurate to better than 1% of the nominal weight.
The accuracy of testing machines shall be in accordance with BS 1610 and BS EN 10002.
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LIFTING EQUIPMENT INSPECTOR l MODULE 2 : WINCHES & POWERED HOISTS l UTILITY WINCHES
NSL 2004
UTILITY WINCHES
JOB NO : CONDITIONS
MODEL : A = SATISFACTORY
SERIAL NO. : B = WORN BUT SERVICEABLE
SWL : C = CONDEMNEDPLANT NO : D = REPLACED
E = N.D.T.D
DESCRIPTION CONDITION COMMENTS
A B C D E
1 Rope Guard
2 Winch drum
3 Brake bands & drums
4 Automatic brake springs
5 Automatic brake cylinder
6 Automatic brake link arms & pins
7 Operating levers (function)
8 Directional / SWL markings
9 Oil level
10 Winch base
11 Winch anchorage
12 Power supply
13 Function test
Tick relevant boxes / delete where applicable
SIGNED : ...................................................................................................................................................... DATE :.............................................
SATISFACTORY
REQUIRES REPAIR
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LIFTING EQUIPMENT INSPECTOR l MODULE 2 : WINCHES & POWERED HOISTS lMAN-RIDING WINCHES
NSL 2004
2.3 : MAN-RIDING WINCHES
EXAMINATION & TESTING PROCEDURE
Automatic brake
Manual brake
Controls Slack wire device
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LIFTING EQUIPMENT INSPECTOR l MODULE 2 : WINCHES & POWERED HOISTS lMAN-RIDING WINCHES
NSL 2004
2.3 : MAN-RIDING WINCHES
EXAMINATION PROCEDURE
ADDITIONAL INSTRUCTIONS Winches converted for the purpose of raising / lowering personnel
Winches of this type will be tted with a dual braking system usually consisting of one manual brake and
one automatic brake
Examine the winch and ensure the winch does not have a disengaging clutch or pawl and ratchet
mechanism
Check that the winch has been adequately de-rated to reect the appropriate factor of safety
(Note: Man-riding winch rope to have F.O.S. of 10:1)
NOTE
It is recommended that this type of winch is not used for general duties.
STANDARD MAN-RIDING WINCHES
Where limit switches are tted to prevent over travel in both hoisting and lowering, function test to ensure
their operation
Function test slack wire device and emergency lowering system if tted
Ensure the winch is clearly marked stating it can be used for raising and lowering personnel
If all satisfactory, record relevant details and issue report.
Record winch wire rope details (if fitted), including certificate number on winch examination report.
This procedure is to be followed as a guideline to NSLs minimum requirements.
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LIFTING EQUIPMENT INSPECTOR l MODULE 2 : WINCHES & POWERED HOISTS lMAN-RIDING WINCHES
NSL 2004
2.3 : MAN-RIDING WINCHES
PROOF LOAD TESTING
Load to be applied in the same direction as the forces it would be subjected to under normal working conditions.Before proof load testing, carry out a visual inspection to ensure no defects are present. Function check the
winch through one complete revolution of the drum
Where limit switches are fitted to prevent over-travel in both hoisting and lowering, function test to ensure their
operation.
Ensure that the winch has been adequately de-rated to reflect a factor of safety of no less than 8:1.
Ensure the winch is clearly marked that it is to be used solely for raising and lowering personnel.
The winch may well be fully certified prior to reaching the worksite, once it has been sited and secured, the
anchorage of the winch has to be tested. This is normally achieved by applying a proof load to the anchorage via
the winch.
Comply with company procedures to determine the type of load test required.
ACCEPTABLE METHODS OF TESTING
Bolt down winch to suitable test bed and fit a wire of such length that no fewer than five turns remain on drum
during any part of the test
TEST 1
Disconnect automatic brake
Carry out performance test at SWL before commencement of proof load
If satisfactory, raise a proof load of SWL + 25% to the required height to allow one full rotation of drum
under load. (This test can be simulated on a hydraulic test bed where a variable pressure relief valve has
been fitted)
Apply manual brake to sustain load and check winch drum for creep
Re-connect automatic brake and with the manual brake in the off position, repeat test 1 so full load is
taken on automatic brake
TEST 2
Disconnect power source to winch and apply brake
Using an alternative pulling source i.e. pull lift / chain hoist on the winch rope, apply a proof load of SWL +
50% to check the braking efficiency. (The brakes may require adjusting to achieve this)
Sustain the load for a short time and check winch drum for creep
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LIFTING EQUIPMENT INSPECTOR l MODULE 2 : WINCHES & POWERED HOISTS lMAN-RIDING WINCHES
NSL 2004
NOTE
Should any of the brake drums be exposed to the elements, the aforementioned tests should be carried out with
the drums wet, to simulate operating conditions. Make any brake adjustments as required.
TEST 3
If tests 1 & 2 are acceptable raise a load of SWL + 10%, stop load during test to ensure the brake sustains the
load without any drum creep.
TEST 4
Re-connect power supply to winch and pull up to SWL (To ensure the brake has not been over tightened to
such an extent as to affect the winchs performance)
Ensure the manual brake has not been over tightened to such an extent as to affect the winchsperformance
Function test slack wire device and emergency lowering system if fitted
Ensure all levers / controls return to neutral on release
The above tests are to be witnessed.Re-examine winch to ensure that proof load testing has not exposed any defects.
If all satisfactory, hard stamp with ID number, SWL and issue certificate.
This procedure is to be followed as a guideline to NSLs minimum requirements for a proof load test.
Live test weights should be weight-checked annually and be accurate to better than 1% of the nominal weight.
The accuracy of testing machines shall be in accordance with BS 1610 and BS EN 10002.
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LIFTING EQUIPMENT INSPECTOR l MODULE 2 : WINCHES & POWERED HOISTS lMAN-RIDING WINCHES
NSL 2004
MAN-RIDING WINCHES
JOB NO : CONDITIONS
MODEL : A = SATISFACTORY
SERIAL NO. : B = WORN BUT SERVICEABLE
SWL : C = CONDEMNEDPLANT NO : D = REPLACED
E = N.D.T.D
DESCRIPTION CONDITION COMMENTS
A B C D E
1 Rope Guard
2 Winch Drum
3 Brake bands & drums
4 Automatic brake springs
5 Automatic brake cylinder
6 Automatic brake link arms & pins
7 Operating levers (function)
8 Directional / SWL markings
9 Oil level
10 Winch base
11 Winch anchorage
12 Power supply
13 Function test
14 Upper limit
15 Lower l imit
16 Slack wire device
17 Overload protection
18 Emergency lowering system
Tick relevant boxes / delete where applicable
SIGNED : ...................................................................................................................................................... DATE :.............................................
SATISFACTORY
REQUIRES REPAIR
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LIFTING EQUIPMENT INSPECTOR l MODULE 2 : WINCHES & POWERED HOISTS l POWERED HOISTS
NSL 2004
2.4 : POWERED HOISTS
EXAMINATION & TESTING PROCEDURE
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LIFTING EQUIPMENT INSPECTOR l MODULE 2 : WINCHES & POWERED HOISTS l POWERED HOISTS
NSL 2004
2.4 : POWERED HOISTS
EXAMINATION PROCEDURE
POWERED CHAIN OR WIRE ROPE HOISTS
HOIST MOTOR / FRAME / BODY
The frame should be free from damage or defects
All bolts and screws should be tight
Examine for signs of overheating
Bearings should be in good condition and adequately lubricated
PENDANT CONTROL
Examine case for damage
Examine emergency stop and control buttons for correct operation
Examine catenary wire (if tted)
Examine suspension wire
Push buttons should be free and making good contact
Directional decals
LIMIT SWITCH
Check for wear and damage
Ensure correct adjustment and good contact surfaces
All moving parts are to be lubricated
BRAKES
Function test to ensure correct operation
Brake linings to be checked for wear (if accessible)
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NSL 2004
GEARS / SHAFTS
If gears sound unduly noisy, send ashore for checking and examination
LOAD SHEAVE / SPROCKET
Check for wear and correct seating of load chain in sprockets
LOAD CHAIN
Check for wear, stretch or distortion
Check for faulty welds or cracks in the links
Examine dead end connection
Examine chain bucket for security of tting
ROPE DRUM (if fitted)
Check for cracks or damage, particularly to the grooves
LOAD ROPE
Check for wear or damage
Ensure adequate lubrication
Check rope dead end connection for damage
Ropes should be considered unusable when broken wires exceed 10% over a length of eight times the diameter
of the rope or any sign of necking indicating internal damage or excessive wear.
TROLLEY UNIT (if fitted)
Examine for wear, distortion
Smooth operation of wheels, bearings and drive
Security of ttings
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LIFTING EQUIPMENT INSPECTOR l MODULE 2 : WINCHES & POWERED HOISTS l POWERED HOISTS
NSL 2004
2.4 : POWERED HOISTS
EXAMINATION PROCEDURE
BOTTOM BLOCK Examine for wear in the sheave, grooves or sprocket
Examine for wear in the crosshead
Check that wear in saddle of hook does not exceed 10%
Ensure top nut is locked
Safety catch functions correctly
TOP HOOK
Examine yoke / swivel
Distortion or wear in the hook
Safety catch functions correctly
SAFE WORKING LOAD / IDENTIFICATION NUMBER
Should be clearly marked
SUPPLY / CONNECTIONS
Check for damage or wear
Check the smooth running of supply cable trolleys (festoons)
Security of connections
If all satisfactory, record relevant details and issue report.
Record wire rope and bottom hook block details (if fitted), including certificate number on examination report.
This procedure is to be followed as a guideline to NSLs minimum requirements.
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LIFTING EQUIPMENT INSPECTOR l MODULE 2 : WINCHES & POWERED HOISTS l POWERED HOISTS
NSL 2004
2.4 : POWERED HOISTS
PROOF LOAD TESTING
ELECTRICALLY / PNEUMATIC POWERED CHAIN OR WIRE ROPE HOISTS
Load to be applied in the same direction as the forces it would be subjected to
under normal working conditions.
Before proof load testing, carry out a visual inspection to ensure no defects are present. Function check the hoist
through one complete revolution of the gears / drum.
Where limit switches are fitted to prevent over-travel in both hoisting and lowering, function test to ensure their
operation.
ACCEPTABLE METHODS OF TESTING
Carry out performance test at SWL before commencement of proof load
If satisfactory, subject the hoist to a proof load of SWL + 25%
In such a fashion that all the gearing makes one full revolution under load
Check for efcient operation of the brakes
ENSURE ALL LEVERS / CONTROLS RETURN TO NEUTRAL ON RELEASE
Re-examine hoist to ensure that proof load testing has not exposed any defects.
If all satisfactory, hard stamp with ID number, SWL and issue certificate.
This procedure is to be followed as a guideline to NSLs minimum requirements for a proof load test.
Live test weights should be weight-checked annually and be accurate to better than 1% of the nominal weight.
The accuracy of testing machines shall be in accordance with BS 1610 and BS EN 10002.
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LIFTING EQUIPMENT INSPECTOR l MODULE 2 : WINCHES & POWERED HOISTS l POWERED HOISTS
NSL 2004
PNEUMATIC CHAIN HOISTS
EQUIPMENT TYPE : CONDITIONS
PLANT NO. : A = SATISFACTORY
SERIAL NO. : B = WORN BUT SERVICEABLE
SWL : C = CONDEMNED
DESCRIPTION CONDITION
A B C
1 Top hook
2 Safety catch
3 Bottom hook
4 Safety catch
5 Top hook swivel / yoke
6 Load sprocket or sheaves
7 Body casing
8 Load chain / wire rope
9 Function test
10 Hook load pins
11 Hook swivels / yokes
12 Direction controls (pendant / pull cord)
13 Button / switch function
14 Direction decals
15 Emergency stop button
16 Suspension / catenary wire
17 Trolley unit (if fitted)
18 Gears and shafts (if visibly accessable)
19 Limit switches
20 Power connection / supply
21 Security of fittings
22 Lubrication
23 Dead end connection
24 Chain bucket
25 Drum
Tick relevant boxes / delete where applicable
SIGNED (CANDIDATE) : ............................................................... DATE : ...............................ENGINEER: ............................................................
SATISFACTORY
REQUIRES REPAIR
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NSL 2004
2.5 : LIFEBOAT / LIFERAFT DAVIT WINCHES
EXAMINATION & TESTING PROCEDURE
EXAMINATION PROCEDURE
Examine winch drum and check for wear, distortion or cracks
Ensure drum ange height projects at least 1.5 times the rope diameter above upper most layer
Examine brake release device for distortion and is located in the on position
Crank handle is located close to the winch, is undamaged and locates correctly onto winch
Check power supply cables for damage, wear or perished insulation
Examine push button controls and casing (if tted) for damage and are (with power shut off) free to move
Winch body is undamaged and securely attached
Winch is sufciently lubricated
Examine winch wire rope
Comply with company procedures regarding function testing.
If all satisfactory, record relevant details and issue report.
Record winch wire rope details (if fitted), including certificate number on winch examination report.
This procedure is to be followed as a guideline to NSLs minimum requirements.
Hoists
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NSL 2004
2.5 : LIFEBOAT / LIFERAFT DAVIT WINCHES
PROOF LOAD TESTING
All such tests must be planned in advance with all certification and records updated before the test. Theauthorised / competent person must carry out these checks.
It is important that all personnel involved in the test agree the actual procedure in advance of any testing taking
place.
Load to be applied in the same direction as the forces it would be subjected to under normal working conditions.
Before proof load testing, carry out a visual inspection to ensure no defects are present.
Comply with company procedures to determine the type of load test required.
Refer to company procedures for NDT inspection requirements on base welds before and after load testing.
ACCEPTABLE METHODS OF TESTING
Load boat with weights that together with the weight of the boat, represents 1.1 times the full load of
personnel and the boat equipment
The method of loading weights must be such that no one enters the boat once 90% of the total load is reached.
If this cannot be achieved then the weight of the boat must not be taken by the falls during loading, but by a
crane (the capacity of the crane shall be at least 2.2 times the loaded weight of the boat) and a spreader bar.
If a crane and spreader bar are used, this should then be lowered so the weight of the boat is taken on the falls.
Under no circumstances should anyone enter the boat at this time.
The area under and around the boat must now be checked to ensure it is clear of personnel and obstructions
The boat is now lowered by lifting the brake fully to enable the boat to reach maximum speed on the
centrifugal brake
The mechanical brake is then applied suddenly, before the boat enters the water, and the test paused to
ensure that the position of the boat is held
The winch shall be capable of lowering the lifeboat under gravity conditions at speeds not less than 0.30
m/s nor greater than 0.60 m/s
The results of the test should be recorded on a test certificate produced by the competent person and signed by
the witnessing authorised person.
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NSL 2004
UK Regulation and SOLAS requires that at least once every five years rescue boats and lifeboats shall be turned
out and lowered when loaded with weights to simulate 1.1 times the total mass of the lifeboat or rescue boat
when loaded with its full complement of persons and equipment.
If liferaft davits and winches are to be tested, weights are to be suspended directly from the davit rather than
using a liferaft.
TESTS CARRIED OUT AT MANUFACTURERS WORKS FOR THE ACCEPTANCE OF THE WINCH BY THE
PURCHASER
TEST WITHOUT LOAD
The winch shall be run at light line speed for a period of 10 min, 5 min in each direction
HOISTING TEST
The winch shall hoist a load related to the weight of the lifeboat and its required equipment
At the speed of 0.05 m/s for lifeboats and with a speed not less than 0.3 m/s for emergency boats
To a height of not less than 15 m
BRAKE TEST
The brake shall be applied and a static test load equivalent to the working load times 1.5 shall be appliedto a rope secured to and wound on the drum fully and evenly reeled to the specified two or three layers
The drum shall not rotate and it shall be demonstrated that it is possible to release the brake
It shall also be demonstrated that the winch can slowly lower the static test load, under control of the
brake, for at least one complete revolution of the drum and then hold the load
LOWERING TEST
A load equivalent to the working load shall be applied to a rope secured to and wound on the drum fully
and evenly reeled to the specified two or three layers
The drum shall be declutched from the prime mover and the drum brake released
The governing brake shall govern the speed of descent to comply with not less than 0.30 m/s nor greater
than 0.60 m/s
The total lowering height for this test shall not be less than 15 m
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NSL 2004
The results of the test should be recorded on a test certificate produced by the competent person and signed by
the witnessing authorised person.
Re-examine winch to ensure that proof load testing has not exposed any defects.
If all satisfactory, hard stamp with ID number, SWL and issue certificate.
This procedure is to be followed as a guideline to NSLs minimum requirements for a proof load test.
Live test weights should be weight-checked annually and be accurate to better than 1% of the nominal weight.
The accuracy of testing machines shall be in accordance with BS 1610 and BS EN 10002.
LIFEBOAT / LIFERAFT DAVIT WINCHES
EQUIPMENT TYPE : CONDITIONS
PLANT NO. : A = SATISFACTORY
SERIAL NO. : B = WORN BUT SERVICEABLE
SWL : C = CONDEMNED
DESCRIPTION CONDITION
A B C
1 Drum
2 Drum flange
3 Brake release device
4 Crank handle
5 Power supply cables
6 Power supply connections
7 Push button controls
8 Winch body casing
9 Lubrication
10 Function test as per company procedure
11 Winch wire
12 Winch base
13 ID / SWL markings
14 Oil levels
Tick relevant boxes / delete where applicable
SIGNED (CANDIDATE) : ............................................................... DATE : ...............................ENGINEER: ............................................................
SATISFACTORY
REQUIRES REPAIR
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LIFTING EQUIPMENT INSPECTOR l MODULE 2 : WINCHES & POWERED HOISTS lREPORT EXAMPLES
NSL 2004NSL LTD l T : +44(0)44 1224 208988 l E : [email protected] l WWW.NSL-UK.COM29
NSL 2004
2.6 : REPORT EXAMPLES
VISUAL INSPECTION REPORT
PROOF LOAD TEST CERTIFICATE
NDT CERTIFICATES
DEFECT REPORT
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NSL 2004
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NSL 2004
REPORT OF THOROUGH EXAMINATION AND / OR TEST OF LIFTING APPLIANCE OR ACCESSORY
STATUTORY INSTRUMENTS 1998 No. 2307
The Lifting Operations and Lifting Equipment Regulations 1998
STATUTORY INSTRUMENTS 1992 No. 3073
The Supply of Machinery (Safety) Regulations 1992
STATUTORY INSTRUMENTS 1998 No. 2306
The Provision and Use of Work Regulations 1998
CERTIFICATION NO : ............................................................................................. TESTER / EXAMINER: ...........................................................
QUALIFICATION : ................................................................................................... DATE OF TEST / EXAMINATION : ..........................................
IDENTIFICATION
NO.
QTY DESCRIPTION OF EQUIPMENT SWL PROOF LOAD
APPLIED
DATE OF NEXT
EXAMINATION
ABC 0001 1 Air Powered man-riding lever controlled 150kg N/A 18.02.08
winch manufacturer: Ingersoll rand
Model: LS150RLP.L.B.ESerial No:0100010
Winch fitted with main air emergency stop
device
Upper & lower limit switches
Emergency lowering system
Overload protection device
Slack wire device
Protective cover to be fitted when not in use
winch wire inspection report: 12345/001
ORIGINAL CERTIFICATE NO. ORIGINAL CERTIFICATE DATE NAME OF CERTIFYING BODY DATE OF LAST EXAMINATION
12345/001 21.08.06 NSL 20.02.07
PARTICULARS OF DEFECTS FOUND WHICH ARE, OR COULD,
BECOME A DANGER TO PERSONS OR NONE
PARTICULARS OF ANY REPAIR, ALTERATION TO REMEDY DEFECT
OR NONE
NONE NONE
NAME AND ADDRESS OF EQUIPMENT OWNER: ADDRESS OF PREMISES WHERE TEST / EXAMINATION WAS HELD:
Up & Down Engineering Ltd Platform Alpha
Big Road, Aberdown, AD12 1AD
We hereby certify that on ........................... (date) the item/s described in this report was/were thoroughly examined, so far
as accessible, and the above particulars are correct. If installation is relevant, the equipment checked and examined is safe
to operate.
SIGNATURE OF PERSON : ................................................................................ NAME OF PERSON...................................................................CONDUCTING EXAMINATION CONDUCTING TEST / EXAMINATION (delete as nessassary)
DATE .................................................................................................................DOC REF NO : NSL C 001
54321/001
19.08.07
J. Bloggs
EAL Module 2
J. Bloggs
19.08.07
19.08.07
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NSL 2004
REPORT OF THOROUGH EXAMINATION AND / OR TEST OF LIFTING APPLIANCE OR ACCESSORY
STATUTORY INSTRUMENTS 1998 No. 2307
The Lifting Operations and Lifting Equipment Regulations 1998
STATUTORY INSTRUMENTS 1992 No. 3073
The Supply of Machinery (Safety) Regulations 1992
STATUTORY INSTRUMENTS 1998 No. 2306
The Provision and Use of Work Regulations 1998
CERTIFICATION NO : ............................................................................................. TESTER / EXAMINER: ...........................................................
QUALIFICATION : ................................................................................................... DATE OF TEST / EXAMINATION : ..........................................
IDENTIFICATION
NO.
QTY DESCRIPTION OF EQUIPMENT SWL PROOF LOAD
APPLIED
DATE OF NEXT
EXAMINATION
ABC 0001 1 Air Powered man-riding lever controlled 150 kg 225kg Static test 19.08.07
winch manufacturer: Ingersoll rand
Model: LS150RLP.L.B.E 188kg function test
Serial No:0100010
Winch fitted with main air emergency stop device 165kg dynamic test
Upper & lower limit switches
Emergency lowering system Satisfactory
Overload protection device emergency
Slack wire device lowering test @ 150kg
Note: full operating instructions & procedures to be nitrogen source
posted at winch location, including emergency
lowering procedures
Air intake shut-off valve to be clearly marked
& not obstructed
Proctective cover to be fitted when not in use
Winch wire inspection report : 12345/ 002
ORIGINAL CERTIFICATE NO. ORIGINAL CERTIFICATE DATE NAME OF CERTIFYING BODY DATE OF LAST EXAMINATION
N/A N/A N/A 20.08.06
PARTICULARS OF DEFECTS FOUND WHICH ARE, OR COULD,
BECOME A DANGER TO PERSONS OR NONE
PARTICULARS OF ANY REPAIR, ALTERATION TO REMEDY DEFECT
OR NONE
NONE NONE
NAME AND ADDRESS OF EQUIPMENT OWNER: ADDRESS OF PREMISES WHERE TEST / EXAMINATION WAS HELD:
Up & Down Engineering Ltd Platform Alpha
Big Road, Aberdown. AD12 1AD
We hereby certify that on ........................... (date) the item/s described in this report was/were thoroughly examined, so far
as accessible, and the above particulars are correct. If installation is relevant, the equipment checked and examined is safe
to operate.
SIGNATURE OF PERSON : ................................................................................ NAME OF PERSON...................................................................
CONDUCTING EXAMINATION CONDUCTING TEST / EXAMINATION (delete as nessassary)
DATE .................................................................................................................DOC REF NO : NSL C 001
12345/001
20.02.07
J. Bloggs
EAL Module 2
J. Bloggs
21.02.07
21.02.07
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LIFTING EQUIPMENT INSPECTOR l MODULE 2 : WINCHES & POWERED HOISTS l LIFEBOAT / LIFERAFT DAVIT WINCHES
NSL 2004
MAGNETIC PARTICLE INSPECTION REPORT
CLIENT LOCATION INSPECTION DATE
Up & Down Engineering Ltd Platform Alpha 20.02.07
Big Road, Aberdown NSL JOB NO REPORT NO
AD12 1AD G12345 G12345 /001
CLIENT ORDER NO SHEET
ABCD00001 one of one
COMPONENT / DESCRIPTION / DRAWING NO.
Winch base welds
Loacated at drill floor winch ABC00001
MATERIAL SURFACE CONDITION
Carbon Steel Acceptable
PROCEDURE / WORK / INSTRUCTION / TECHNIQUE ACCEPTANCE STANDARD
Carried out in accordance with NSL Inspection Procedures BS 6072EQUIPMENT POWER / CURRENT MATERIAL THICKNESS
Permanent magnet 18kg minimum pull 20mm
METHOD MEDIUM BACKGROUND
Black & white contrast Ely supramor 4 black Ely white contrast paint 712
RESULT
100% magnetic particle inspection was carried out on winch No ABC00001 base welds pre & post load test
No defect was found at time of inspection and is acceptable to specifications
This report relates exclusively to the work ordered and / or the item(s) inspected. It shall not be reproduced except in full, without the approval of theinspection body and the client.
NSL INSPECTOR ISSUING AUTHORITY CLIENT
Sign Sign Sign
Name Joe Bloggs Name Name
Quals Module 2 Quals Quals
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LIFTING EQUIPMENT INSPECTOR l MODULE 2 : WINCHES & POWERED HOISTS l LIFEBOAT / LIFERAFT DAVIT WINCHES
NSL 2004
CLIENT : ................................................................................................................................................................................................................
INSPECTION ENGINEER: .......................................................................................................................................................................................
INSTALLATION : ....................................................................................................................................................................................................
DATE : ..................................................................................................................................................................................................................
CD09
TO BE COMPLETED BY INSPECTING ENGINEER INSTALLATION STAFF USE ONLY
PLANT & CERTNO.
DEFECTIVE ITEM
(DESCRIPTION ,
LOCATION, SERIAL
NO.)
PARTICULARS
OF DEFECT
(INCLUDING RETEST
IF APPLICABLE
REPAIR BY TO BE REPORTEDTO ENFORCINGAUTHORITY
JOB CARD NO. REMARKS(MANIFEST NO.ETC.)
123/001 Safety pin Deformed body Remove from N/A 00010/001 Removed from
Bow shackle service service 18.02.08
SWL 3.25 Tons
welders swing
arm jib
06712 Chainblock, SWL Safety catch Fit safety catch N/A 66616/002 New safety
1 tonne, missing from before use catch fitted
HOL 3m, bottom hook 18.02.05
welders Swing
arm jib
Up & Down Engineering Ltd
J.Bloggs
Workshop, Big Road, Abertown
17.02.05
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NSL 2004NSL LTD l T : +44(0)44 1224 208988 l E : [email protected] l WWW.NSL-UK.COM35
NSL 2004
2.7 : BLANK REPORTS
VISUAL INSPECTION REPORT
PROOF LOAD TEST CERTIFICATE
NDT CERTIFICATES
DEFECT REPORT
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NSL 2004
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NSL 2004
REPORT OF THOROUGH EXAMINATION AND / OR TEST OF LIFTING APPLIANCE OR ACCESSORY
STATUTORY INSTRUMENTS 1998 No. 2307
The Lifting Operations and Lifting Equipment Regulations 1998
STATUTORY INSTRUMENTS 1992 No. 3073
The Supply of Machinery (Safety) Regulations 1992
STATUTORY INSTRUMENTS 1998 No. 2306
The Provision and Use of Work Regulations 1998
CERTIFICATION NO : ............................................................................................. TESTER / EXAMINER: ...........................................................
QUALIFICATION : ................................................................................................... DATE OF TEST / EXAMINATION : ..........................................
IDENTIFICATION
NO.
QTY DESCRIPTION OF EQUIPMENT SWL PROOF LOAD
APPLIED
DATE OF NEXT
EXAMINATION
ORIGINAL CERTIFICATE NO. ORIGINAL CERTIFICATE DATE NAME OF CERTIFYING BODY DATE OF LAST EXAMINATION
PARTICULARS OF DEFECTS FOUND WHICH ARE, OR COULD,
BECOME A DANGER TO PERSONS OR NONE
PARTICULARS OF ANY REPAIR, ALTERATION TO REMEDY DEFECT
OR NONE
NAME AND ADDRESS OF EQUIPMENT OWNER: ADDRESS OF PREMISES WHERE TEST / EXAMINATION WAS HELD:
We hereby certify that on ........................... (date) the item/s described in this report was/were thoroughly examined, so far
as accessible, and the above particulars are correct. If installation is relevant, the equipment checked and examined is safe
to operate.
SIGNATURE OF PERSON : ................................................................................ NAME OF PERSON...................................................................CONDUCTING EXAMINATION CONDUCTING TEST / EXAMINATION (delete as nessassary)
DATE .................................................................................................................DOC REF NO : NSL C 001
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NSL 2004
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NSL 2004
REPORT OF THOROUGH EXAMINATION AND / OR TEST OF LIFTING APPLIANCE OR ACCESSORY
STATUTORY INSTRUMENTS 1998 No. 2307
The Lifting Operations and Lifting Equipment Regulations 1998
STATUTORY INSTRUMENTS 1992 No. 3073
The Supply of Machinery (Safety) Regulations 1992
STATUTORY INSTRUMENTS 1998 No. 2306
The Provision and Use of Work Regulations 1998
CERTIFICATION NO : ............................................................................................. TESTER / EXAMINER: ...........................................................
QUALIFICATION : ................................................................................................... DATE OF TEST / EXAMINATION : ..........................................
IDENTIFICATION
NO.
QTY DESCRIPTION OF EQUIPMENT SWL PROOF LOAD
APPLIED
DATE OF NEXT
EXAMINATION
ORIGINAL CERTIFICATE NO. ORIGINAL CERTIFICATE DATE NAME OF CERTIFYING BODY DATE OF LAST EXAMINATION
PARTICULARS OF DEFECTS FOUND WHICH ARE, OR COULD,
BECOME A DANGER TO PERSONS OR NONE
PARTICULARS OF ANY REPAIR, ALTERATION TO REMEDY DEFECT
OR NONE
NAME AND ADDRESS OF EQUIPMENT OWNER: ADDRESS OF PREMISES WHERE TEST / EXAMINATION WAS HELD:
We hereby certify that on ........................... (date) the item/s described in this report was/were thoroughly examined, so far
as accessible, and the above particulars are correct. If installation is relevant, the equipment checked and examined is safe
to operate.
SIGNATURE OF PERSON : ................................................................................ NAME OF PERSON...................................................................CONDUCTING EXAMINATION CONDUCTING TEST / EXAMINATION (delete as nessassary)
DATE .................................................................................................................DOC REF NO : NSL C 001
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NSL 2004
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NSL 2004
REPORT OF THOROUGH EXAMINATION AND / OR TEST OF LIFTING APPLIANCE OR ACCESSORY
STATUTORY INSTRUMENTS 1998 No. 2307
The Lifting Operations and Lifting Equipment Regulations 1998
STATUTORY INSTRUMENTS 1992 No. 3073
The Supply of Machinery (Safety) Regulations 1992
STATUTORY INSTRUMENTS 1998 No. 2306
The Provision and Use of Work Regulations 1998
CERTIFICATION NO : ............................................................................................. TESTER / EXAMINER: ...........................................................
QUALIFICATION : ................................................................................................... DATE OF TEST / EXAMINATION : ..........................................
IDENTIFICATION
NO.
QTY DESCRIPTION OF EQUIPMENT SWL PROOF LOAD
APPLIED
DATE OF NEXT
EXAMINATION
ORIGINAL CERTIFICATE NO. ORIGINAL CERTIFICATE DATE NAME OF CERTIFYING BODY DATE OF LAST EXAMINATION
PARTICULARS OF DEFECTS FOUND WHICH ARE, OR COULD,
BECOME A DANGER TO PERSONS OR NONE
PARTICULARS OF ANY REPAIR, ALTERATION TO REMEDY DEFECT
OR NONE
NAME AND ADDRESS OF EQUIPMENT OWNER: ADDRESS OF PREMISES WHERE TEST / EXAMINATION WAS HELD:
We hereby certify that on ........................... (date) the item/s described in this report was/were thoroughly examined, so far
as accessible, and the above particulars are correct. If installation is relevant, the equipment checked and examined is safe
to operate.
SIGNATURE OF PERSON : ................................................................................ NAME OF PERSON...................................................................CONDUCTING EXAMINATION CONDUCTING TEST / EXAMINATION (delete as nessassary)
DATE .................................................................................................................DOC REF NO : NSL C 001
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NSL 2004
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NSL 2004
REPORT OF THOROUGH EXAMINATION AND / OR TEST OF LIFTING APPLIANCE OR ACCESSORY
STATUTORY INSTRUMENTS 1998 No. 2307
The Lifting Operations and Lifting Equipment Regulations 1998
STATUTORY INSTRUMENTS 1992 No. 3073
The Supply of Machinery (Safety) Regulations 1992
STATUTORY INSTRUMENTS 1998 No. 2306
The Provision and Use of Work Regulations 1998
CERTIFICATION NO : ............................................................................................. TESTER / EXAMINER: ...........................................................
QUALIFICATION : ................................................................................................... DATE OF TEST / EXAMINATION : ..........................................
IDENTIFICATION
NO.
QTY DESCRIPTION OF EQUIPMENT SWL PROOF LOAD
APPLIED
DATE OF NEXT
EXAMINATION
ORIGINAL CERTIFICATE NO. ORIGINAL CERTIFICATE DATE NAME OF CERTIFYING BODY DATE OF LAST EXAMINATION
PARTICULARS OF DEFECTS FOUND WHICH ARE, OR COULD,
BECOME A DANGER TO PERSONS OR NONE
PARTICULARS OF ANY REPAIR, ALTERATION TO REMEDY DEFECT
OR NONE
NAME AND ADDRESS OF EQUIPMENT OWNER: ADDRESS OF PREMISES WHERE TEST / EXAMINATION WAS HELD:
We hereby certify that on ........................... (date) the item/s described in this report was/were thoroughly examined, so far
as accessible, and the above particulars are correct. If installation is relevant, the equipment checked and examined is safe
to operate.
SIGNATURE OF PERSON : ................................................................................ NAME OF PERSON...................................................................CONDUCTING EXAMINATION CONDUCTING TEST / EXAMINATION (delete as nessassary)
DATE .................................................................................................................DOC REF NO : NSL C 001
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NSL 2004
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NSL 2004
REPORT OF THOROUGH EXAMINATION AND / OR TEST OF LIFTING APPLIANCE OR ACCESSORY
STATUTORY INSTRUMENTS 1998 No. 2307
The Lifting Operations and Lifting Equipment Regulations 1998
STATUTORY INSTRUMENTS 1992 No. 3073
The Supply of Machinery (Safety) Regulations 1992
STATUTORY INSTRUMENTS 1998 No. 2306
The Provision and Use of Work Regulations 1998
CERTIFICATION NO : ............................................................................................. TESTER / EXAMINER: ...........................................................
QUALIFICATION : ................................................................................................... DATE OF TEST / EXAMINATION : ..........................................
IDENTIFICATION
NO.
QTY DESCRIPTION OF EQUIPMENT SWL PROOF LOAD
APPLIED
DATE OF NEXT
EXAMINATION
ORIGINAL CERTIFICATE NO. ORIGINAL CERTIFICATE DATE NAME OF CERTIFYING BODY DATE OF LAST EXAMINATION
PARTICULARS OF DEFECTS FOUND WHICH ARE, OR COULD,
BECOME A DANGER TO PERSONS OR NONE
PARTICULARS OF ANY REPAIR, ALTERATION TO REMEDY DEFECT
OR NONE
NAME AND ADDRESS OF EQUIPMENT OWNER: ADDRESS OF PREMISES WHERE TEST / EXAMINATION WAS HELD:
We hereby certify that on ........................... (date) the item/s described in this report was/were thoroughly examined, so far
as accessible, and the above particulars are correct. If installation is relevant, the equipment checked and examined is safe
to operate.
SIGNATURE OF PERSON : ................................................................................ NAME OF PERSON...................................................................CONDUCTING EXAMINATION CONDUCTING TEST / EXAMINATION (delete as nessassary)
DATE .................................................................................................................DOC REF NO : NSL C 001
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MAGNETIC PARTICLE INSPECTION REPORT
CLIENT LOCATION INSPECTION DATE
NSL JOB NO REPORT NO
CLIENT ORDER NO SHEET
of
COMPONENT / DESCRIPTION / DRAWING NO.
MATERIAL SURFACE CONDITION
PROCEDURE / WORK / INSTRUCTION / TECHNIQUE ACCEPTANCE STANDARD
EQUIPMENT POWER / CURRENT MATERIAL THICKNESS
METHOD MEDIUM BACKGROUND
RESULT
This report relates exclusively to the work ordered and / or the item(s) inspected. It shall not be reproduced except in full, without the approval of theinspection body and the client.
NSL INSPECTOR ISSUING AUTHORITY CLIENT
Sign Sign Sign
Name Name Name
Quals Quals Quals
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CLIENT : ................................................................................................................................................................................................................
INSPECTION ENGINEER: .......................................................................................................................................................................................
INSTALLATION : ....................................................................................................................................................................................................
DATE : ..................................................................................................................................................................................................................
CD09
TO BE COMPLETED BY INSPECTING ENGINEER INSTALLATION STAFF USE ONLY
PLANT & CERTNO.
DEFECTIVE ITEM
(DESCRIPTION ,
LOCATION, SERIAL
NO.)
PARTICULARS
OF DEFECT
(INCLUDING RETEST
IF APPLICABLE
REPAIR BY TO BE REPORTEDTO ENFORCINGAUTHORITY
JOB CARD NO. REMARKS(MANIFEST NO.ETC.)
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NSL 2004
2.8 :APPENDIX
WINCH DRUM CAPACITY
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2.8 : APPENDICES
WINCH DRUM CAPACITY
L = Length of rope (metres)A = Desired depth of winding (mm). The depth of the
flange is normally reduced by 40 to 50 mm to allow
ground clearance for the rope.
B = Diameter of barrel (mm)
C = Width between flanges (mm)
K = A constant developed according to the diameter of
the rope.
Table shows the value of the constants from 2 to 67 mm rope diameter.
ROPE DIAMETER (MM) K ROPE DIAMETER (MM) K
2 1274 24 183300
3 2865 26 215200
4 5093 28 249600
5 7958 32 326000
6 11470 35 389900
7 15600 38 459700
8 20370 40 509300
9 25780 44 616300
11 38520 48 733300
13 53800 51 828100
14 62400 52 860800
16 81490 54 928300
18 103100 56 998200
19 114900 60 1147000
20 127400 64 1304000
22 154100 67 1429000
A
B
C
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2.8 : APPENDIX
WINCH DRUM CAPACITY
FORMULA L = (A+B) x A x C
K
EXAMPLE
Drum dimensions : A= 400mm B= 600mm C= 700mm K: Rope diameter 16mm = 81490
Length of rope on drum = (400 + 600) x 400 x 700
81490
= 280,000,000 81490
= 3437m
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