Termination Methods in Winching Operations

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is one method to prevent the displacement of loads from a hook during lifting?

Incorporating more pulleys in the system

Using a hook made exclusively of plastic

Reducing the load weight by half

Incorporating a safety device like a latch (correct)

According to the ACoP to Regulation 6(1) of LOLER, what type of devices should be provided for lifting?

Devices that reduce the risk of load displacement (correct)

Devices that can only support static loads

Devices that can handle all types of materials

Devices that require minimal inspection

What is the maximum fleet angle allowed for rotation-resistant ropes?

10°

4°

2° (correct)

5°

What happens to wire ropes entering a sheave at a larger fleet angle?

They twist more with increasing fleet angle. Signup and view all the answers

What preventive measures can be taken to ensure that the load rope cannot run off the side of the rope drum?

Incorporating flanged drum end plates Signup and view all the answers

What is necessary for the visual examination of a machine to be adequate?

Natural or artificial light must be adequate. Signup and view all the answers

Who should perform the examinations according to the requirements outlined?

A competent person as per the schedule of requirements. Signup and view all the answers

Which procedures must be followed when examining parts such as hooks and chains?

The manufacturer’s recommended standards as well as relevant British Standards. Signup and view all the answers

What should be ensured about parts during examination according to the outlined criteria?

Parts should be sufficiently exposed for assessment. Signup and view all the answers

What aspect must be checked regarding mating parts during the examination?

Their operation must be checked and observed. Signup and view all the answers

What is the primary use of the ferrule secured eye made using the turn-back-loop method?

Used mainly in winching operations Signup and view all the answers

How does the live side of the load rope enter the asymmetrical wedge socket?

Straight edge in line with the load pin Signup and view all the answers

What minimum safety factor must be considered when fastening rope onto the rope drum?

2.5 times the remaining static force Signup and view all the answers

What should be included in the operator pre-use checks for a hoist?

Visual check for any obvious signs of damage Signup and view all the answers

Which of the following rope terminations is NOT mentioned as acceptable?

Wire rope grips for basic lifting Signup and view all the answers

Which of the following is NOT a recommended pre-use check for a hoist?

Review the manufacturer's warranty documentation Signup and view all the answers

What must be ensured about the anchorages on the rope?

Must resist 2.5 times the static rope force Signup and view all the answers

Which termination method is allowed according to BS EN 13411 for rope diameters up to 8mm?

Symmetric wedge socket Signup and view all the answers

What is the purpose of the pre-use checks on a hoist?

To identify any potential safety hazards Signup and view all the answers

What is a requirement for the connections and individual components of hoists?

They must incorporate features to prevent self-loosening. Signup and view all the answers

What should be done if the hoist is fitted to a runway beam?

Ensure the trolley operates correctly Signup and view all the answers

What must be taken into account when selecting fastening elements for the rope's fixing point?

Rope and drum contours Signup and view all the answers

What is the purpose of 'hold-to-run' control elements in manually-controlled hoists?

To ensure that power is cut off when the control is released. Signup and view all the answers

Which inspection should be conducted by a Responsible Person?

Regular visual inspections prior to use Signup and view all the answers

What is a consequence of incorrect pulling alignment in an asymmetrical wedge socket?

Kinking or cutting of the rope Signup and view all the answers

According to the electromagnetic compatibility requirements, how should hoists operate?

They must not generate disturbances that interfere with other machinery. Signup and view all the answers

What aspect of the load rope should be checked during pre-use inspections?

Obvious signs of damage or kinks Signup and view all the answers

Which of the following describes a valid action regarding the emergency stop button?

Check its operation and know its location Signup and view all the answers

What is the significance of overload protection in hoists with a Working Load Limit (WLL) of 1 tonne or more?

To alert the operator and prevent dangerous movements during overload. Signup and view all the answers

Which document should be consulted for guidelines on in-service inspection of hoists?

BS 7121-2 reference code Signup and view all the answers

What must moving transmission parts be designed to protect against?

Contact with exposed persons during operation. Signup and view all the answers

For hoists installed in such a way that the overturning moment exceeds 40,000Nm, what must be installed?

An overload warning device. Signup and view all the answers

What materials are typically specified for the lifting media of hoists?

Chain, wire rope, and belts. Signup and view all the answers

What is an important feature of the design of hoist components?

They should prevent self-loosening during operation. Signup and view all the answers

Study Notes

Terminology and Methods

Ferrule secured eye created via the turn-back-loop method is designed to form a homogenous joint using a compressed ferrule.
Predominantly used in winching operations today.

Asymmetrical Wedge Socket

Load rope enters the straight edge of the socket aligned with the load pin, facilitating proper load alignment.
Axial alignment prevents kinking or cutting of the rope.
BS EN 13411-6:2004 outlines two methods to secure the dead end of the rope, safeguarding against slippage.

Rope to Rope Drum Connection

Rope fastening must accommodate at least 2.5 times the remaining static force at the fastening point given the hoist's rated capacity.
Minimum of two rope windings must remain on the drum before the rope's fixing point.
Selection of fastening elements must consider rope and drum contours.
Anchorages must withstand 2.5 times the static rope force from the rated hoist capacity without deforming.
Termination options include various wedge sockets and clamps as per BS EN standards.

Hoist Standards and Requirements

Features must be included in connections and components to prevent self-loosening during operation.
Protection measures for moving parts are required to mitigate risks for exposed personnel.

Control Devices

Manual hoists must have 'hold-to-run' controls to interrupt power supply when actuating elements are released.

Electromagnetic Compatibility

Hoists must adhere to EN 60204-32, ensuring minimal electromagnetic interference with other machinery.

Overload Protection

Hoists with a WLL of 1 tonne or greater must have devices to warn operators of overload and prevent dangerous movements.
Consideration for upgrading older equipment may include safety devices or design changes for hooks.

Fleet Angle and Rope Drives

Fleet angle configurations must not exceed 4° for standard ropes and 2° for rotation-resistant ropes to prevent excessive twisting.
Increasing fleet angles lead to greater twisting of the wire rope affecting performance.

Rope Drums

Hoist design must prevent rope from running off the drum side; measures include flanged drum end plates and rope guides.
Maintenance manuals will provide additional technical information necessary for installation and upkeep.

Pre-Use Checks

Include a visual inspection for damage, checking limit switches, brake functionality, and the condition of the load rope.
Ensure the hook operates smoothly, and emergency stop button functions correctly.

In-Service Inspection

Visual inspections should occur pre-use and include assessments of fixings, suspension points, and supporting structures.
Competent personnel must conduct examinations per statutory requirements and quality policies.
Detailed evaluations must consider the condition of all operating mechanisms, including hooks and brakes, ensuring safe operation.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

This quiz focuses on the termination methods used in winching operations, specifically looking at ferrule secured eyes made using the turn-back-loop method and asymmetrical wedge sockets. Understand the importance of these methods in preventing rope damage and ensuring efficient lifting.