Live working - Saddles, stick clamps and their accessories

IEC 61236:2010 applies to saddles, stick clamps and their accessories, used for live working. The products designed and manufactured according to this standard contribute to the safety of the users provided they are used by skilled persons, in accordance with safe methods of work and the instructions for use. This second edition cancels and replaces the first edition published in 1993. It constitutes a technical revision. It includes the following significant technical changes from the previous edition:
- clarification of the requirements and of the test provisions;
- addition of a test for the durability of marking;
- application of conformity assessment for products having completed the production phase, according to IEC 61318:2007 (Ed. 3).

Travaux sous tension - Selles, manchons et leurs accessoires

La CEI 61236:2010 s'applique aux selles, aux manchons et à leurs accessoires utilisés pour les travaux sous tension. Les produits conçus et fabriqués en conformité avec la présente norme contribuent à la sécurité des utilisateurs, pourvu qu'ils soient utilisés par des personnes qualifiées, conformément à des méthodes de travail en toute sécurité et aux instructions d'emploi. Cette deuxième édition annule et remplace la première édition publiée in 1993, dont elle constitue une révision technique. Elle inclut les modifications techniques essentielles suivantes, par rapport à l'édition antérieure:
- la clarification des exigences et des dispositions d'essai;
- l'ajout d'un essai pour la durabilité du marquage;
- l'application de l'évaluation de la conformité des produits issus de la production selon les dispositions définies dans la CEI 61318:2007 (Ed. 3).

General Information

Status
Published
Publication Date
26-Oct-2010
Technical Committee
Current Stage
PPUB - Publication issued
Start Date
27-Oct-2010
Completion Date
27-Oct-2010
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IEC 61236
Edition 2.0 2010-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Live working – Saddles, stick clamps and their accessories
Travaux sous tension – Selles, manchons et leurs accessoires
IEC 61236:2010
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 61236
Edition 2.0 2010-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Live working – Saddles, stick clamps and their accessories
Travaux sous tension – Selles, manchons et leurs accessoires
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX
ICS 13.260; 29.240.20; 29.260.99 ISBN 978-2-88912-240-0
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – 61236 © IEC:2010
CONTENTS

FOREWORD...........................................................................................................................4

INTRODUCTION.....................................................................................................................6

1 Scope...............................................................................................................................7

2 Normative references .......................................................................................................7

3 Terms, definitions and symbols ........................................................................................7

3.1 Terms and definitions ..............................................................................................7

3.2 Symbols ..................................................................................................................8

4 Requirements ...................................................................................................................8

4.1 General ...................................................................................................................8

4.2 Dimensional requirements .......................................................................................8

4.3 Mechanical requirements.........................................................................................8

4.4 Protection against corrosion ....................................................................................9

4.5 Marking ...................................................................................................................9

4.6 Instructions for use................................................................................................10

5 Tests ..............................................................................................................................10

5.1 General .................................................................................................................10

5.2 Visual and functional inspection ............................................................................10

5.3 Dimensional check ................................................................................................11

5.4 Durability of marking .............................................................................................11

5.5 Mechanical tests ...................................................................................................11

5.5.1 General test provisions and pass criteria ...................................................11

5.5.2 Specific test provisions..............................................................................11

6 Conformity assessment ..................................................................................................37

7 Modifications ..................................................................................................................37

Annex A (normative) Suitable for live working; double triangle (IEC 60417-5216:2002-10)...38

Annex B (normative) General type test procedure ................................................................39

Annex C (normative) Classification of defects and associated requirements and tests .........45

Bibliography..........................................................................................................................49

Figure 1 – Locking device with chain or strap – tensile test...................................................12

Figure 2 – Locking device with chain or strap – bending test.................................................12

Figure 3 – Chain (strap) binder – tensile test ........................................................................13

Figure 4 – Locking device – bending test ..............................................................................14

Figure 5 – Test on the retractable spring...............................................................................15

Figure 6 – Chain (strap) binder – torque test.........................................................................16

Figure 7 – Ring saddle with rigid bracket – bending test .......................................................17

Figure 8 – Ring saddle with chain bracket – tensile test ........................................................18

Figure 9 – Lift-type saddle – bending test .............................................................................19

Figure 10 – Shackle – tensile test .........................................................................................20

Figure 11 – Pole-type saddle – bending test .........................................................................21

Figure 12 – Saddle extension – bending test.........................................................................22

Figure 13 – Tower-type saddle – bending test.......................................................................23

Figure 14 – Crossarm-type saddle – bending test .................................................................24

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61236 © IEC:2010 – 3 –

Figure 15 – Crossarm-type saddle – torque test....................................................................25

Figure 16 – Block saddle – bending test ...............................................................................26

Figure 17 – Tower-arm yoke – bending test ..........................................................................27

Figure 18 – Platform pivot attachment – bending test on inner flange of steel angle..............28

Figure 19 – Platform pivot attachment – bending test on outer flange of steel angle .............28

Figure 20 – Example of tensile test on a hydraulic tension puller on double-string set...........29

Figure 21 – Example of bending test on a saddle for triangular yoke.....................................30

Figure 22 – Example of bending test on a saddle for rectangular yoke ..................................30

Figure 23 – Example of tensile test on a tenon extension......................................................31

Figure 24 – Example of bending test on a insulating rope gin................................................31

Figure 25 – Example of tensile test on the block anchoring point of insulating rope...............32

Figure 26 – Slippage test on a stick clamp............................................................................32

Figure 27 – Bending test on a stick clamp.............................................................................33

Figure 28 – Tensile test on the assembling screw for coupled stick clamps...........................34

Figure 29 – Slippage test of a support-stick strirrup ..............................................................35

Figure 30 – Bending test of a support-stick strirrup (rigid stirrup) ..........................................35

Figure 31 – Tensile test of a support-stick strirrup (swivel stirrup).........................................36

Figure 32 – Bending test of a offset eye................................................................................36

Table 1 – Mechanical ratings for each type of device ..............................................................9

Table B.1 – Sequence number of the type tests to be carried out..........................................40

Table B.2 – Sequence number of the type tests to be carried out..........................................41

Table B.3 – Sequence number of the type tests to be carried out..........................................42

Table B.4 – Sequence number of the type tests to be carried out..........................................43

Table B.5 – Example of a type test sequence for tower-type saddle......................................44

Table C.1 – Classification of defects and associated requirements and tests for

saddles, stick clamps and their accessories..........................................................................45

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– 4 – 61236 © IEC:2010
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LIVE WORKING –
SADDLES, STICK CLAMPS AND THEIR ACCESSORIES
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested

in the subject dealt with may participate in this preparatory work. International, governmental and non-

governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely

with the International Organization for Standardization (ISO) in accordance with conditions determined by

agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 61236 has been prepared by IEC technical committee 78: Live

working.

This second edition cancels and replaces the first edition published in 1993. It constitutes a

technical revision.

It includes the following significant technical changes from the previous edition:

– clarification of the requirements and of the test provisions;
– addition of a test for the durability of marking;

– application of conformity assessment for products having completed the production phase,

according to IEC 61318:2007 (Ed. 3).
---------------------- Page: 6 ----------------------
61236 © IEC:2010 – 5 –
The text of this standard is based on the following documents:
Enquiry draft Report on voting
78/850/CDV 78/867/RVC

Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

The committee has decided that the contents of this publication will remain unchanged until

the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data

related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
---------------------- Page: 7 ----------------------
– 6 – 61236 © IEC:2010
INTRODUCTION

The requirements provided in this standard are essential requirements. Each user of this

standard may supplement it with their own requirements. These will cover, for example,

required mechanical performance and conditions of interchangeability with equipment

already in service. In such cases, caution should be taken to maintain or improve the

performance of the products.

This International Standard has been prepared in accordance with the requirements of

IEC 61477.

The products covered by this standard may have an impact on the environment during some

or all stages of its life cycle. These impacts can range from slight to significant, be of short-

term or long-term, and occur at the global, regional or local level.

Except for a disposal statement in the instructions for use, this standard does not include

requirements and test provisions for the manufacturers of the product, or recommendations to

the users of the product for environmental improvement. However, all parties involved in the

product’s design, manufacture, packaging, distribution, use, maintenance, repair, reuse,

recovery and disposal are encouraged to take account of environmental considerations.

---------------------- Page: 8 ----------------------
61236 © IEC:2010 – 7 –
LIVE WORKING –
SADDLES, STICK CLAMPS AND THEIR ACCESSORIES
1 Scope

This International Standard is applicable to saddles, stick clamps and their accessories, used

for live working.

The products designed and manufactured according to this standard contribute to the safety

of the users provided they are used by skilled persons, in accordance with safe methods of

work and the instructions for use.
2 Normative references

The following referenced documents are indispensable for the application of this document.

For dated references, only the edition cited applies. For undated references, the latest edition

of the referenced document (including any amendments) applies.
IEC 60417, Graphical symbols for use on equipment

IEC 61318:2007, Live working – Conformity assessment applicable to tools, devices and

equipment

IEC 61477, Live working – Minimum requirements for the utilization of tools, devices and

equipment
3 Terms, definitions and symbols
3.1 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 61318 and the

following apply.
3.1.1
accessory

supplemental metal device used with saddles and stick clamps to carry out the live work

3.1.2
family of devices
devices which have the same function (utilization, use, etc.)
3.1.3
rated value

value of a quantity used for specification purposes, established for a specified set of operating

conditions of a component, device, equipment, or system
[IEC 60050-151:2001, 151-16-08]
3.1.4
saddle

metal device fixed to a pole, cross-arm or tower and used with a stick clamp to hold or guide

support sticks and other equipment
---------------------- Page: 9 ----------------------
– 8 – 61236 © IEC:2010
[IEC 60743:2008, 10.3.1 and IEC 60050-651:1999, 651-09-06, modified]
3.1.5
stick clamp
metal device used with a stick or saddle to hold or guide a support stick
[IEC 60743:2008, 10.3.6, modified]
3.1.6
type of device
devices which have the same design and application and are of similar dimensions
3.2 Symbols

T rated torque given by the manufacturer for a device or a part of a device and for

testing purposes

F rated tensile force given by the manufacturer for a device or a part of a device and

for testing purposes

F rated bending force given by the manufacturer for a device or a part of a device

and for testing purposes
F rated slippage force given by the manufacturer for a device and for testing
purposes
4 Requirements
4.1 General

The following requirements have been prepared in order that the saddles, stick clamps and

their accessories covered by this standard are designed and manufactured to contribute to

the safety of the users, provided they are used by persons skilled for live working, in

accordance with safe methods of work and the instructions for use.

NOTE Appropriate measures should be taken to minimize the weight and size of the equipment to optimize

handling.
4.2 Dimensional requirements

For each type of device, the manufacturer shall indicate the dimensions or operating ranges

related to the specific functions of the device, in particular the dimensions of acceptable

supports for the saddles, and the specified diameters of acceptable tubes and rods for stick

clamps shall be indicated.
4.3 Mechanical requirements

For each type of device, the manufacturer shall give the rated values as outlined in Table 1.

---------------------- Page: 10 ----------------------
61236 © IEC:2010 – 9 –
Table 1 – Mechanical ratings for each type of device
Rated values
Type of device
Bending Tensile Torque Slippage
F F T F
BN TN N GN
Chain (strap) binder - Whole device Tightening device
- Locking device
Ring saddle with - Whole device Chain (strap) and
rigid bracket - Locking device locking device
Ring saddle with Locking device - Whole device Tightening device
chain bracket - Chain (strap) and
locking device
Lift-type saddle - Whole device - Chain (strap) and
- Locking device locking device
- Shackle
Pole-type saddle - Whole device Chain (strap) and
- Locking device locking device
Saddle extension Whole device
Tower-type saddle Whole device Mounting bolts
Crossarm-type Whole device Mounting bolts
saddle
Block saddle Whole device
Tower-arm yoke Whole device Mounting bolts
Platform pivot Whole device
attachment
Saddles and - Saddle for - Assembly
accessories for triangular yoke
hydraulic tension - Saddle for - Tenon extension
puller rectangular yoke
- Insulating rope gin - Block anchoring
point
Stick clamp Whole device Assembly Mounting bolts Whole device
Rigid support-stick Whole device Whole device
stirrup
Swivel support-stick Whole device Whole device
stirrup
Offset eye Whole device

The manufacturer shall give the values F for these devices with and without saddle extension.

Applicable to stick clamps designed to be coupled.
4.4 Protection against corrosion

Metallic parts shall be protected against corrosion, either by their composition or by a suitable

surface treatment.

For each type of device, the manufacturer shall demonstrate that the metallic parts are

corrosion resistant.
4.5 Marking
Each device shall be marked with the following permanent items of marking:
– manufacturer’s name or trade mark;
– type reference;
– year and, if possible, month of manufacture;
– rating (or capacity if requested by the customer);
---------------------- Page: 11 ----------------------
– 10 – 61236 © IEC:2010

– symbol IEC 60417-5216:2002-10 – Suitable for live working; double triangle (Annex A);

NOTE The exact ratio of the height of the figure to the base of the triangle is 1,43. For the purpose of

convenience, this ratio can be between the values of 1,4 and 1,5.

– number of the relevant IEC standard immediately adjacent to the symbol (IEC 61236).

Information or characteristics not required at the work site, such as year of publication of the

standard, shall be provided by other means (bar codes, microchips, etc.) or shall be provided

on the packaging.
4.6 Instructions for use

Each device shall come with the manufacturer’s instructions for use and care. These

instructions shall be prepared in accordance with the general provisions given in IEC 61477.

These instructions shall include at least
– maximum mechanical rating;
– recommended application(s);

– recommendations for cleaning, storage, transportation, periodic testing, refinishing and

disposal.
5 Tests
5.1 General

This standard provides testing provisions to demonstrate compliance of the product with the

requirements of Clause 4. These testing provisions are primarily intended to be used as type

tests for validation of the design input. Where relevant, alternative means (calculation,

examination, tests, etc.), are specified within the test subclauses for the purpose of saddles,

stick clamps and their accessories having completed the production phase.

To show compliance with this standard, the manufacturer shall prove that the type tests have

been carried out successfully on at least three devices for each type.

However, when the differences between several types of device are limited in number, tests

that are unaffected by the differing characteristics of the devices can be carried out on a

single type of device, and the results can be used for the other device types.

The different type tests, and the order in which these tests are performed are given in

Annex B.

The tests in Tables B.1, B.2, B.3 and B.4 of Annex B shall be performed, following the

specified order.

NOTE In Tables B.1, B.2, B.3 and B.4 the numbers within parentheses provide reference to the Subclause where

the relevant test is explained. For some families of devices, columns are divided in sub-columns equal to the

number of mechanical tests to be applied to these devices (these may be destructive). These sub-columns also

show the sequence of tests to be applied (for an example see Table B.5).

Any device failing to pass any one of the tests mentioned in Tables B.1, B.2, B.3 and B.4 of

Annex B shall result in the design being rejected.
5.2 Visual and functional inspection

Each device shall be visually inspected to detect manufacturing defaults and to check proper

functioning.
---------------------- Page: 12 ----------------------
61236 © IEC:2010 – 11 –
The test shall be considered as passed if each device shows compliance with the
requirements included in 4.3, 4.4, 4.5 and 4.6 where applicable.
5.3 Dimensional check

Each device shall be measured to ensure that its dimensions match the manufacturer’s rated

dimensions.
5.4 Durability of marking

The durability of the marking shall be verified by thoroughly cleaning the marking for at least

1 min with a piece of lint-free cloth dampened with water and then rubbing it vigorously for a

further minimum of 1 min with a piece of lint-free cloth dampened with isopropanol (CH -

CH(OH)-CH ).

NOTE 1 It is the employer’s duty to ensure that any relevant legislation and any specific safety instructions

regarding the use of isopropanol are fully observed.

The test shall be considered as passed if the marking remains legible and the letters do not

smear.

The surface of the device may change. No signs of loosening shall be present for labels.

NOTE 2 Marking made by moulding or engraving need not be subjected to this test.
5.5 Mechanical tests
5.5.1 General test provisions and pass criteria

The tensile, bending, and slippage force and the torque values shall be progressively applied

in increments at a rate of (0,1 ± 0,025) F /s, F /s, F /s and T /s until the values of

TN BN GN N
, 1,25 F , 1,25 F and 1,25 T are reached.
1,25 F
TN BN GN N
Each value shall then be maintained for 1 min before the results are noted.

The test shall be considered as passed if no visible signs of damage are observed on the

device and no slippage occurs.

These force and torque values shall then be increased again at the same rate as above until

the values of 2,5 F , 2,5 F , 1,5 F and 2,5 T are reached. Each value shall be
TN BN GN N
maintained for 1 min before the results are noted again.

The test shall be considered as passed if no permanent deformation or breakage is observed

on the device and no slippage occurs.
...

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