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Rope Access Repository

Rope Access Repository articles by the Hong Kong Wilderness Training Centre:

– 11 Nov 2015: Leave No Trace for Rope Activities
– 15 Jun 2015: Understanding the Specifications of Carabiners
– 01 Jun 2015: Notes for Advanced-level Rope Technicians
– 01 Jun 2015: Notes for Basic-level Rope Technicians


Leave No Trace for Rope Activities

Written & Illustrated by: Billy
Published on: 25 Nov 2015
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Note: This article represents only the personal opinion of the author(s); it does not reflect the views of the HKWTC, or any relevant organizations.

Leave No Trace in Rope Activities

1. PLAN AHEAD AND PREPARE
– Pick a safe venue for the activities, according to the number of participants, their capabilities, and the gears needed
– Rope activities can take many forms, and are all high-risk activities; so plan carefully what equipment you should take with you
– Do not have rope activities on protected rock faces or at protected locations

2. TRAVEL AND CAMP ON DURABLE SURFACES
– When taking part in a rope activity, please use established routes for approach marches as far as possible. The site for the activity should also be durable, such as rock faces, hard slopes, or artificial buildings. Do not create your own paths, to avoid damaging the natural environment
– When selecting anchors, one can make use of nuts, or existing bolts that are reliable; if one needs to use trees as anchor, one should do it with tree protectors

3. DISPOSE OF WASTE PROPERLY
– Get rid of unnecessary packages (e.g. food packages) before hand, to reduce the amount of waste that you need to deal with on site. After the activity, carry all the rubbish out with you, and dispose of them only when you are back to the urban area
– If needed, please defecate on sand or soil that is away from footpaths, and at least 60 meters away from any water source; also, avoid defecating on plants.
– Use reusable rope protectors to protect your ropes, avoid using duck tapes

4. LEAVE WHAT YOU FIND
– Do not leave permanent marks – especially do not graffiti on rock surfaces, besides changing the outlook of the face permanently, the chemicals in the ink can often damage the ropes, harnesses, and slings
– If there are existing permanent anchors on site, do not damage or remove them

5. MINIMIZE CAMPFIRE IMPACTS
– Hill fires can have long-lasting effects on the mountains; avoid smoking, to reduce the chances of starting a hill fire
– Fire can destroy not only the nature, but also ropes, harnesses and slings, threatening the lives of the participants

6. RESPECT WILDLIFE
– Don’t feed the wild animals, to avoid changing their eating habits; in addition, unnatural food may also damage the health of the wild animals
– Don’t take the animals home with you – nature is their home; taking them away may cause them their lives, if they could not adapt to the new environment
– Don’t harm the wildlife, respect their rights to live

7. BE CONSIDERATE OF OTHER VISITORS
– When carrying out rope activities, pick a site that is large enough, and leave some space for others to carry out their own activities
– Sometimes when communicating with the participants from afar, one can make use of radios, to avoid needing to shout to each other; this can not only reduce the noise produced by the activity, but also avoid confusing the communications of others

References:
[1] Leave No Trace website: https:// lnt.org

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Understanding the Specifications of Carabiners

Written & Illustrated by: Billy
Published on: 15 Jun 2015
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Note: This article represents only the personal opinion of the author(s); it does not reflect the views of the HKWTC, or any relevant organizations.

On every tested carabiner there is information marked on it – how much do you know about this information? Let us take a good look.
Below, we will use the Petzl OK SL as an example for illustration:

carabiners-explainedENG

What is in the technical guidebook?

Under EU certifications, the guidebook needs to list out six items:
1. Use, Storage, Maintenance
2. Technical Checks
3. Compatability with other use
4. Correct Use
5. Limitation of use
6. Lifetime

登山扣資料及拉力認識5

EN vs CE

登山扣資料及拉力認識3Equipment that has been tested by the EU will have the words “EN” marked on them, after which is a series of numbers representing the type of the product. E.g. EN362 = locking carabiners

登山扣資料及拉力認識4
CE represents European Commission, and the digits on its right represents the independent testing organization. Tests are conducted by independent parties, to ensure its fairness.

Why do we need individual batch numbers?

If the manufacturer found out a problem in a batch of the product, it will issue a recall notice. At which point consumers can check their own equipment to see if the batch no. matches the one issued by the manufacturer, and ask for follow-ups.

登山扣資料及拉力認識6

 

Pulling Force of Different Directions

登山扣資料及拉力認識7You can often find numbers looking like these on your carabiner. They represent the maximum amount of pulling force that the carabiner can take in the corresponding directions.
(Units: 1KN =100KG, so, 24KN means 2400KG.)

登山扣資料及拉力認識8

Pressure that can be withstood in this direction: 24 KN

Locked or not, this is the direction that a carabiner can withstand the largest amount of force. The axis on which all the information is written is its strongest axis.

Pressure that can be withstood in this direction: 10 KN

We will sometimes use the carabiner like this by accident, which is not recommended; as the force it can take will be greatly reduced. For example, the Petzl OK SL on the right can take 24KN when used properly, but when it is used horizontally, it can take only 10KN.

登山扣資料及拉力認識9
登山扣資料及拉力認識10

Pressure that can be withstood in this direction: 7KN

A carabiner is at its weakest when the gate isn’t closed – only 7 KN in this case. This doesn’t only reduce the load-taking capacity of the carabiner, but may also allow the accidental removal of gears from within the carabiner. That is why you should always check whether your carabiner has been properly locked.

Supplementary Information:

If a carabiner is to pass an ANSI test, even the pressure that the gate can withstand will also be tested. Figure shows that the gate of the carabiner below can withstand 16KN of pressure.

 登山扣資料及拉力認識11

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Notes for Advanced-level Rope Technicians

Written and Illstrated by: Billy
Published on: 01 Jun 015

Note: This article represents only the personal opinion of the author(s); it does not reflect the views of the HKWTC, or any relevant organizations.

Some of the instructors at the HKWTC are certified Rope Access Instructors of Hong Kong Rope Union. To help their students to study the course content, they have prepared these two sets of notes for the students, and let them download these notes for revisions when needed.

Note: These notes are only for the use of individuals who have completed the Basic-level and Advanced-level Rope Technique Training Courses. The HKWTC shall have no responsibility with respect to any accident, death, or loss of any kind, that is associated with the use of  these notes.

Notes for advanced level rope technicians_頁面_1Notes for advanced level rope technicians_頁面_2Notes for advanced level rope technicians_頁面_3Notes for advanced level rope technicians_頁面_4Notes for advanced level rope technicians_頁面_5Notes for advanced level rope technicians_頁面_6Notes for advanced level rope technicians_頁面_7

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Notes for Advanced-level Rope Technicians

Written and Illstrated by: Billy
Published on: 01 Jun 015

Note: This article represents only the personal opinion of the author(s); it does not reflect the views of the HKWTC, or any relevant organizations.

Some of the instructors at the HKWTC are certified Rope Access Instructors of Hong Kong Rope Union. To help their students to study the course content, they have prepared these two sets of notes for the students, and let them download these notes for revisions when needed.

Note: These notes are only for the use of individuals who have completed the Basic-level and Advanced-level Rope Technique Training Courses. The HKWTC shall have no responsibility with respect to any accident, death, or loss of any kind, that is associated with the use of  these notes.

Notes for basic level rope technicians_頁面_1

Notes for basic level rope technicians_頁面_2Notes for basic level rope technicians_頁面_3Notes for basic level rope technicians_頁面_4

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