c ve eng pr 5.4 conveyor equipment safeguarding 2013

8/12/2019 C VE ENG PR 5.4 Conveyor Equipment Safeguarding 2013

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DE BEERS CONSOLIDATED MINES PROPRIETARY LIMITEDVENETIA MINE

EQUIPMENT SAFEGUARDINGWork Standard 001

ISSUE 1PAGE 2 OF 25

CONTENTS PAGE1.0 INTRODUCTION ........................................................................................................................... 32.0 PURPOSE AND APPLICATION .................................................................................................. 33.0 REFERENCES, LEGAL AND GENERAL REQUIREMENTS ...................................................... 4

3.1 Legal Requirements .......................................................................................................... 43.2 Plant and Equipment Requirements ............................................................................... 43.3 System and procedural requirements ............................................................................ 53.4 People requirements ........................................................................................................ 53.5 Related documents and reference reading .................................................................... 5

4.0 DEFINITIONS ................................................................................................................................ 55.0 RESPONSIBILITY ........................................................................................................................ 66.0 SAFEGUARDING STANDARDS ................................................................................................. 7

6.1 Rules for Guard Designs .................................................................................................. 76.2 Guarding / barrier selection and placement ................................................................... 86.3 Guard Maintenance ........................................................................................................... 96.4 Fail-to-safe switches and locking devices ................................................................... 10

7.0 OPTIMUM WORKING ENVIRONMENT ..................................................................................... 108.0 THE HUMAN ELEMENT............................................................... Error! Bookmark not defined.9.0 CONVEYOR SYSTEMS.............................................................................................................. 11

9.1 PULLEYS .......................................................................................................................... 119.1.1 General ............................................................................................................... 119.1.2 Upwards.............................................................................................................. 119.1.3 Over .................................................................................................................... 119.1.4 Into ...................................................................................................................... 119.1.5 Around ................................................................................................................ 129.1.6 Through .............................................................................................................. 12

9.2 IDLERS ............................................................................................................................. 129.3 DRIVES ............................................................................................................................. 129.4 TRIP WIRE ........................................................................................................................ 139.5 REMOVAL OF 'BUILD-UP' .............................................................................................. 139.6 ACCESS ........................................................................................................................... 13

APPENDIX I: 'NIP GUARDS ILLUSTRATION ................................................................................... 14APPENDIX II: TECHNIQUES OF MECHANICAL GUARDING .......................................................... 15APPENDIX III: RECORD OF AMENDMENTS .................................................................................... 25


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ISSUE 1PAGE 3 OF 25

1.0 INTRODUCTION

In the past, accidents at Mines resulting in serious injuries and/or fatalities have occurredbecause the danger points on equipment installations were either unguarded or inadequatelyguarded.

Minerals Act Regulation 20.5 requires that all exposed machinery which, when in motion, maybe dangerous to any person shall be securely fenced off. Efficient guards shall be provided tosuch parts of any machinery as may be a source of danger to any person.

The wording "may be dangerous to any person" and "may be a source of danger to any person"clearly implies that at places where persons may reasonably be expected to work or moveabout machinery must be guarded or fenced off. It does not matter whether a person has or

has not the right to approach such items of machinery, for should an accident result, the plea ofsafety by position will not normally be accepted in law unless at least certain minimumrequirements were complied with. Implicit in the statutory requirements is the fact that it is notsufficient to act with hindsight but, as far as is humanly possible, hazards must be identifiedbefore danger arises. Guards or fences must be constructed to protect against unforeseencontingencies, and not merely against normally expected operational hazards.

Many accidents occur when part of the victim's body, clothing or tools become trapped at thenip point or on open rotating machinery.

Causes of and factors contributing to these incidents include:-- absent, damaged or inadequate guarding in place- working alongside unguarded moving parts

- objects falling or projecting from moving parts- ineffective guarding standards in place- working on moving parts with guarding removed- lack of guarding interlocks- non-adherence to procedures- uncontrolled release of material under pressure (air, water, oil) and temperature- access under suspended loads (take-ups)- equipment mobilised by high pressure components (hydraulics)- no process to identify guarding needs

2.0 PURPOSE AND APPLICATION

The purpose of this work standard is to provide minimum guidelines for guarding requirementsin the work place.

It applies to the safeguarding of people from moving parts, mobile machines, equipment, powertools (portable and fixed), high pressure equipment, electrical and other energy sources with thepotential to move, as well as objects falling or projecting from moving parts. Safeguardingmeasures should also be taken when working with chemicals, radio-active material, extremes intemperature (hot and cold) and equipment under tension / compression.

This Standard applies to all employees, including contractors and visitors.


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ISSUE 1PAGE 4 OF 25

3.0 REFERENCES, LEGAL AND GENERAL REQUIREMENTS

3.1 LEGAL REQUIREMENTS

Minerals Act Regulation 20.5 requires that all exposed machinery which, when in motion,may be dangerous to any person shall be securely fenced off. Efficient guards shall beprovided to such parts of any machinery as may be a source of danger to any person.

3.2 PLANT AND EQUIPMENT REQUIREMENTS

3.2.1 Plant and equipment safeguards shall be designed and constructed to comply

with relevant legislation, and as far as possible to standards, codes of practiceand relevant recognised leading industry practices, such as the AngloStandards and Guidelines. It shall also conform to instructions issued by theDepartment of Mineral Resources, Mine based policies and procedures and theDe Beers Fatal Risk Control Guidelines. Any deviation from the specification /standard should be formally approved in writing following an exemptionprocedure and signed off by the Inspectorate and/or General Manager. Suchexemption should only be granted following a formal documented risk basedapproach where alternative controls have been considered.

3.2.2 A formal system shall be in place to ensure the integrity of plant and equipmentsafeguarding installations.

3.2.3 New plant and equipment shall consider all energy sources and be designed toeliminate the need for guarding where practicable.

3.2.4 Safeguarding shall be selected where other potential mitigation measures donot adequately protect personnel as identified in the risk assessment.

3.2.5 Where safeguarding and interlock systems are insufficient to protect people,access to plant and equipment shall be controlled and monitored.

3.2.6 Due consideration must be made for maintainability and operability of theguards and the equipment around which it is designed to fit.

3.2.7 Guards shall only be removed for maintenance, repair, cleaning, clearing,

testing, etc. after plant and equipment have been isolated, de-energised,locked-out and tested in line with the De-energise and Lock-out policy or Codeof Practice.

3.2.8 No guards may be removed while plant and equipment is in motion

3.2.9 Where temporary removal of safeguards is necessary on operating plant andequipment for the purposes of fault finding, testing and commissioning, a riskbased procedure shall be in place. Only persons authorised by the engineermay be permitted to perform such tasks.

3.2.10 Guards shall be replaced prior to plant and equipment being put back intooperation.


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ISSUE 1PAGE 5 OF 25

3.3 SYSTEM AND PROCEDURAL REQUIREMENTS

3.3.1 A risk based process shall be used to identify where safeguarding andinterlocks are required on plant and equipment.

3.3.2 A risk based process shall be used to identify safeguarding hazards that requireinterlock systems for additional control.

3.3.3 All documentation related to the risk based process for the selection andmodification of safeguarding requirements shall be retained and controlled.

3.3.4 No guarding shall be modified or altered except through the application of a risk

based change management system.

3.3.5 Procedures shall be in place for entry to plant and equipment in designatedsafeguarded areas e.g. winding plant, scrubbers. Where no procedure exists aformal risk assessment must be conducted and signed off by the engineer.

3.4 PEOPLE REQUIREMENTS

3.4.1 A competency based training system shall be in place for relevant personnelinvolved in the design, purchase, construction, operation and maintenance ofplant and equipment. This training to include the procurement department.

3.4.2 Observations by peers and supervisors shall include work activities associatedwith plant and equipment safeguarding.

3.5 RELATED DOCUMENTS AND REFERENCE READING

Reference to further standards and safeguarding measures can be obtained from theAnglo American Fatal Risk Guideline on Equipment Safeguarding: - RefAA_AFRG_000005

4.0 DEFINITIONS

Act shall mean the Mine Health and Safety Act (Act 29 of 1996) as amended, unless

specifically identified otherwise.

Author isation shall mean signed written permission given by a duly appointed person to aqualified person to perform certain tasks or actions.

Competent person shall mean a person who

is qualified by virtue of his knowledge, skills, training and experience to organisework and its performance;

is familiar with the provisions of t he Act and the regulations which apply to thework to be performed;

has been trained to recognise any potential or actual danger to health or safetyin the performance of the work or

is in possession of the appropriate certificate of competency where suchcertificate is required by these regulations.


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ISSUE 1PAGE 6 OF 25

De-energizeshall mean to make machinery or equipment or a relevant portion thereof safe towork on and/or at a zero energy state by effectively:

Disconnecting from all possible sources of energy and/or harmful substances and/or releasingor discharging or removal of all stored energy and/or releasing or discharging or removal ofharmful substances and/or securing equipment against any movement and/or other means asprescribed by specific equipment procedures.

Energyshall mean any electrical / mechanical / chemical / hydraulic / pneumatic / water source/ radio activity / system which has a capacity for doing work. Shall generally include systemswhich are under relative pressure, which provide a means for work e.g. heating or movement.

Equipmentshall mean all machinery, plant, installations and provisions utilizing, transmitting,

conducting or storing energy. Shall include all equipment that could pose a risk to health andsafety because of its associated use of or presence of harmful substances.

Isolateshall mean to physically disconnect from all sources of energy and/or remove all energy.This shall include to test and verify that all sources of energy have been removed. Furtherisolation shall include the installation of specified means (as per specific equipment/installationprocedures) or to create a physical barrier to maintain the de-energized state of the equipmente.g. installation of mechanical blanking plates or installation of earths on certain electricalinstallations.

Lockoutshall mean to padlock or equivalent, to ensure that the equipment is maintained in thede-energised and isolated state and that the energy or harmful substances cannot be returnedor applied to the equipment for the duration of the task. Lock out shall include the requirement

to test and verify that machinery is in a non-operable condition and/or that a de-energisedstate has been achieved.

Nip pointmeans a point of danger where a risk exists for any moving part to pinch, grab or ripan item, including tools, clothing and body parts.

Qualified person shall mean a person, duly trained to execute particular task/s and tospecifically recognise the hazards and risks to health and safety associated with the task.

Responsible Personshall be the person in immediate charge to whom a particular task hasbeen assigned by an area supervisor or any other duly appointed person who may assign tasksfor action or implementation as the case may be. In the case of job card or PlannedMaintenance Order this shall be the person assigned to a particular job as per the

maintenance system. This person shall be the person in charge of the task until completion oruntil handed-over to another responsible person should the need arise. While each person isresponsible for their own safety, this person shall carry the overall responsibility of allequipment, facilities, resources and/or persons necessary for the completion of the assignedtasks.

5.0 RESPONSIBILITY

It is the responsibility of every person to make sure that adequate guarding is in place as perthis standard. Where uncertainties exist then advice should be obtained from the sectionsupervisor or appointed engineer.


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ISSUE 1PAGE 7 OF 25

6.0 SAFEGUARDING STANDARDS

6.1 RULES FOR GUARD DESIGNS

6.1.1 Guarding is there to provide a physical barrier between the worker and thedangerous parts of the plant or equipment; careful attention to design, layoutand materials is essential.

6.1.2 Guarding should be custom built for the required purposeone size does not fitall. Do not use a guard built for one piece of equipment on another unless it ischecked and fits correctly.

6.1.3 All energy sources must be considered when designing a guard i.e. rotation,falling, breaking, rolling, sliding, exploding, heat, etc.

6.1.3 Guards should be bolted into place and not be allowed to lie loose over themoving part. It should be considered a permanent fixture of the machine orequipment and should provide maximum protection.

6.1.4 Guards should not interfere with the equipment moving parts.

6.1.5 Guards must not allow access to the danger zone during operation. Refer toAppendix I for further details on Techniques of Mechanical Guarding.

6.1.6 Guards must take into account the needs of operational and maintenance

crews:-- visibility of equipment being guarded- ease of installation and removal - weight and size of guard- maintainability of guard- dust control- noise control- temperature and ventilation needs

6.1.7 Guards must not be constructed of substandard materials. They must be strongand robust.

6.1.8 The preferred material for guard manufacture is an angle iron frame withexpanded metal covering. Use can also be made of perforated plate and woven

steel screen materials. Wood and plastic is not permitted for guarding.

6.1.9 Guarding mesh aperture sizes and the distance from danger points must notexceed recommended sizes as covered in point 6.2 below.

6.1.10 The largest aperture size permissible for safeguarding of plant and equipment is80 mm. i.e. diamond wire mesh fencing.

6.1.11 Handrails are not considered as guards. It is a means of separation i.e. a barrieror a demarcation device. Red & White barrier tape and mobile/portable barriersare also demarcation devices and are not considered as guards.

6.1.12 Holes may not be cut in guards to gain access to greasing points, unless the

hole is more than 1 metre away from the nip point. Greasing points shouldpreferably be extended beyond the outside of the guard.


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ISSUE 1PAGE 8 OF 25

6.1.13 Newly installed guarding should be painted Orange. Guards previously installedcan retain their current colour, but when replaced should be painted Orange.

6.1.14 The guard must not present a hazard in itself.

6.1.15 No guarding shall be modified or altered except through the application of a riskbased change management system.

6.2 GUARDING / BARRIER SELECTION AND PLACEMENT

6.2.1 Protection against injury by reaching through a guard is determined by theshape and size of openings in the material used for construction of the guard or

fence.

6.2.2 The table below provides the minimum standards for guard openings and thedistance of the guard from the danger point.

Guard mesh aperture size (mm) Minimum distance of guard from dangerpoint (mm)

0 - 6 mm 10 - 25 mm

611 mm 25 - 50 mm

12 mm 60 mm

13 mm 70 mm

14 mm 80 mm

15 mm 90 mm

16 mm 100 mm17 mm 110 mm

18 mm 120 mm

19 mm 130 mm

20 mm 140 mm

2050 mm 140500 mm

60 mm 600 mm

70 mm 700 mm

80 mm 850 mm

6.2.3 Mesh openings greater than 80 mm are not permitted for safeguarding of plantand equipment.

6.2.4 Reaching over safeguards

The following diagram and table makes reference to guarding/barrier positioningaround equipment.


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ISSUE 1PAGE 9 OF 25

6.3 GUARD MAINTENANCE

6.3.1 Guards must be included on job cards as an item for inspection during plannedmaintenance. This can either be as a separate job card or included on theequipment inspection job card itself. It should also form part of the Operationalstaff routine checks.

6.3.2 Checklists should include for inspection of the following deviations:-a) corrosionb) weld conditionc) holes and damaged) is it secure / no bolts missinge) painted orangef) is the guard still doing the job for which it was designed?g) operability of fail-safe switches if fittedh) interlock system functional if guard removed or tampered with

BA

C


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ISSUE 1PAGE 11 OF 25

8.0 CONVEYOR SYSTEMS

8.1 PULLEYS

9.1.1 General

For a guard or fence to be effective it must be so constructed that a person isprevented from reaching the danger or nip point.

A person may normally be regarded as capable of reaching upwards, over, into,around or through a guard or fence and all five these aspects must be taken into

account when considering the effectiveness of a guard or fence. For belt conveyorinstallations the so-called "nip-guard" examples of which are shown in the sketches(Appendix I and II), extending over the whole width of the pulley may be regardedas a reasonable solution to prevent access to the danger points.

A nip-guard by itself cannot be regarded as sufficient protection and it is essentialthat pulleys be further guarded or fenced off to meet the requirements of theregulations.

With regard to belt conveyor installations and as far as the five aspects ofreaching previously referred to are concerned, the following may be accepted assafe.

9.1.2 Upwards

Any pulley or idler which is 3.0 m or more beyond an upward reach may beregarded as safe due to its position and need not be guarded. Possible reductionof this safe clearance by a build-up of spillage or discharge of material must beconsidered.

9.1.3 Over

Head and tail pulleys must be guarded on the two sides and the top unless theguards or fences on the sides are carried to such a height that it is impossible toreach over it or under it and contact the nip-point. If side guards only are provided

with a very small clearance between the edge of the belt and the side guard thismay perhaps be regarded as adequate for preventing reach over the guard to thenip point, but this will not necessarily prevent tools or clothing from being caught inthe nip point. If a top guard is provided it must be high enough above the belt toensure that it will not be damaged by the load on the belt. Tail pulleys also requirethe guard to be closed at the rear and occasionally underneath as well, dependingon the height above the ground.

9.1.4 Into

The distance that the guard or fence is away from the side of the belt will determinethe distance that the guard or fence must be extended away from the nip pointalong the length of the belt. It is normal to make this distance at least 850 mm

away from the nip point.


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9.1.5 Around

This really has the same meaning as "into" as far as the conveyor pulley guard isconcerned, but may also be applied to determine the length of the top section ofthe guard. The same minimum distance of 850 mm shall apply as well for thisdimension.

If there is a V-belt or chain-drive associated with the conveyor installation a verycommon defect is often found here where the V-belts or chains are perfectlyguarded around the perimeter and on one side, but the guard is so installed thatthe nip points can easily be contacted by reaching around the section forming theperimeter guard. All these open points must be closed with appropriate guarding.

9.1.6 Through

The protection against injury by reaching through the guard will be determined bythe shape and size of openings in the material used for construction of the guard orfence.

Refer to the Table under point 6.2

8.2 IDLERS

Although it was stated that it is essential that head, tail and snub pulleys of belt conveyorinstallations, which are "within reach", should be guarded, accidents have happened on

carrying idlers. The outcome has frequently been serious particularly where the amountthe belt can lift off the idlers is restricted. The danger at idlers is even more so whenfixed hoppers or skirt plates, under which the hand can be trapped, are fitted directlyabove the idlers. If this is the case the danger points must be adequately guarded orcompletely enclosed. This also applies, even more so, to belts on which hand-sorting isperformed.

On belt conveyors the return belt or idlers may also present a hazard especially if specificplaces exist where persons regularly pass through underneath the belt. At such places, itis recommended that the underside should be guarded (depending on the height) andcrossing at other places should be prevented. Baskets and trays could also beconsidered if more than 3.0 metres above ground.

8.3 DRIVES

V - belts, chains and couplings between driving motors and gearboxes or drive pulleysmust be effectively guarded. Experience has shown that even when transmissions areapparently inaccessible they can still be a hazard. If the driving mechanism or any otherpart is fenced off completely in such a way that access thereto can only be obtainedthrough a gate or door forming part of the fencing, then this gate or door should beinterlocked so that the conveyor is stopped when this gate or door is opened.Alternatively a log book system must be in place signed by the responsible person.


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8.4 TRIP WIRE

When faults, accidents or blockages occur, it be may necessary to bring the conveyor toan immediate halt. A continuous "trip-wire" stretching the whole length of the conveyorshould be installed. With such a facility available the operator will be less tempted to tryto rectify faults with the conveyor running. If the belt conveyor is so installed that personscan walk along the conveyor on either side of it then a trip-wire must be installed on bothsides of the conveyor. The "trip-wire" switch shall be of a type which requires to bemanually reset in the field.

8.5 REMOVAL OF 'BUILD-UP'

Lateral movement of the belt is usually caused by a build-up of material on the head andtail pulleys, the carrying idlers or snub pulleys. The manual removal of "build-up" is slowand complicated, and more often than not dangerous. In order to keep the pulleys androllers clean, suitable mechanical devices must be installed. The manual removal of"build-up" shall not be permitted whilst the belt conveyor is in motion.

8.6 ACCESS

It is often necessary for an attendant to cross a conveyor at various points. It isdangerous to climb onto the moving belt. Where it is impossible to establish safepassageways underneath the belt, cross-over bridges with handrails, must be provided.The position of these bridges will depend on conditions at the belt conveyor installations

but, unless a sufficient number is installed they will not always be used. Access to thecross-over bridge must be provided by stairs equipped with handrails. Vertical laddersshould be avoided. The cross-over bridge should also be equipped with a 'toe-board"and an intermediate or knee rail.


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APPENDIX I: 'NIP GUARDS ILLUSTRATION


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APPENDIX II: TECHNIQUES OF MECHANICAL GUARDING

It is recognised that in any given situation a hazard-creating motion or action may frequently beguarded in a number of ways, several of which may be satisfactory. The selection of a guardingmethod to be used may depend upon a number of things space limitations, production methods, sizeof stock, frequency of use and still other factors may be important in making the final decision.

Moving machine parts, nip points and pinch points must be guarded individually rather than restrictingaccess to the areas by installing fencing.

It is not the intent of this section to suggest which method of guarding is the best for a given situation,but rather to show that there are a number of ways to guard each different condition.

This will be done by illustrating typical situations, which may be guarded by a variety of methods. Eachillustration is marked correct or incorrect.

Figure 1 shows a self-cleaning tail pulley with an inadequate guard. This should not be accepted asbeing guarded. The guards are placed so the fins and pinch points are exposed.

This type of pulley should be totally guarded as shown in Figure 2. The guard also covers the pinchpoint created by the transfer chute.

The guard for the tail pulley in Figure 3 does not cover the pinch point and therefore is not effective.Side guards are only effective when placed close to the pulley and extending a distance sufficient so

the pinch points cannot be reached from the front, the back or the top. As a rule of thumb, a minimumdistance of 850mm should be used. A smooth pulley can be totally enclosed, as depicted in Figure 2,or guarded along the sides as shown in Figure 4.

Figure 1 Figure 2

Figure 3 Figure 4


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Remote areas protected by location need not be guarded. However, if work is performed at suchlocation as shown in Figure 5, the equipment must by de-energized and locked out and a temporarysafe means of access provided before any work is started.

The use of ladders should be avoided wherever practical, particularly for permanent and semi-permanent installations where regular access is required. The reason for guarding certain return idlersis shown in Figure 6. They should be guarded if someone could be injured while working or passingunderneath the belt. It is reasonable to expect these types of accidents where the idlers are less than

3. metres above the walking surface.

Guarding of return idlers is critical where a change in direction takes place at the idler because higherbelt tension may mean a trapped person cannot release themselves.

Figure 5

Figure 6


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An unguarded head pulley and drive unit is shown in Figure 8.

The head pulley guard is extended so the pinch point cannot be reached.

An emergency stop pull wire along a conveyor belt with a walkway is shown in Figure 10. Theemergency stop pull wire must be located so that it can be reached by a person who falls on or againstthe belt. The emergency stop pull wire stop must also be sufficiently taut to assure the conveyor drivemotor will be de-energized when the emergency stop pull wire is pulled.

In Figure 11, a railing is installed along the conveyor. This must not be considered as a guardedconveyor. The railing is placed away from and slightly above the belt to prevent contact with themoving belt. An emergency stop pull wire and pre-start warning system is still required.

Figure 8 Figure 9

Figure 10 Figure 11


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An unguarded take-up pulley is shown in Figure 12. The structure of the conveyor should not beconsidered as a guard. A simple guard (as shown in Figure 13) can be installed to prevent access tothe pinch points.

Belt dressing shall not be applied manually while belts are in motion, unless an aerosol-type dressingis used. When dressing other than pressurised-typed is applied, the conveyor must be de-energisedand locked.

Figure 12

Figure 13

Figure 14


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The pinch points of take-up pulleys are sometimes located a sufficient distance above the ground to beguarded by location. They are normally equipped with heavy counterweights. The guard in Figure 15prevents access to this suspended load area.

Figure 16 shows a suspended conveyor with the guides blocked by a bar to prevent the counterweightfrom dropping to ground level in case of belt breakage. Cables, for additional safety, are fastened tothe structure. It is recommended that the area below the counterweight also be guarded, however, ifthis is not practical then cables may be adequate if they are designed to absorb the impact of thecounterweight and pulley assembly when it travels its maximum possible distance in the event of thebelt breaking.

All drive shafts (Figure 17) shall be guarded, as shown in Figure 18.

NOTE:Even plain rotating shafts are dangerous as they can catch clothing. Protruding set screws,keys and key ways make rotating shafts more dangerous.

Figure 15 Figure 16

Figure 17 Figure 18


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A guard for a drive belt and pulleys is shown in Figure 23. This type of guard is not adequate becausethe belts and pulleys are accessible from the back.

The belts and pulleys should be totally enclosed as shown in Figure 24.

Whenever hazards are created by belt breakage to persons working or travelling nearby, as shown in

Figure 23

Figure 24


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An effective way of guarding protruding shaft ends is shown in Figure 27. A simple sleeve with an endcap is placed over the shaft, thereby preventing any contact.

As a rule, shaft ends should be guarded whenever they protrude past the end of the bearing cap. Allshafts with a keyway or other protrusion or hole other than in the centre regardless of the distance theyprotrude, shall be guarded.

Fan inlets should be guarded regardless of location, not only to prevent contact with fan blades, butalso where free flying blades would create a hazard.

Figure 27

Figure 28 Figure 29


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APPENDIX III: RECORD OF AMENDMENTS

Recorded below are all amendments made to this document and the date the amendment

was affected.

PAGE REV. SECTION SUBJECT DATE

COMPLETE 0 COMPLETE NEW PROCEDURE 27-10-2011

COMPLETE 1 COMPLETE NEW LOGOS 07-08-2013

c ve eng pr 5.4 conveyor equipment safeguarding 2013

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