required and existing control measures: (submit … - riskassessments/eco-break cartridges in...

Eco-Break Risk Assessment and Method statement for SECONDARING BOULDING BREAKING 1

RISK ASSESSMENT RECORD RA NO: DATE: 22 June 2009

CONTRACTOR: ECO-BREAK LOCATION:

BRIEF DESCRIPTION OF WORK/ACTIVITY: DRILLING AND BREAKING OF ROCK WITH ECO-BREAK PROPELLANT BASED CARTRIDGES

RISK ASSESSMENT TEAM:

Initials and Surname ECO-BREAK TEAM Approval Signature REVIEWED: YES / NO

Eco-break Manager: _________________ Name Signature

Expected Review date:

MANGEMENT TEAM

Comments:

Site Safety Manager 2.17.4

Mine Manager 3.1(a)

Civil Supervisor 2.9.2

REQUIRED AND EXISTING CONTROL MEASURES: (SUBMIT AND ATTACH TO RISK ASSESSMENT)

AVAILABLE ADEQUATE REMARKS

Yes No Yes No

Method Statement Yes Yes

Procedures: SOP, SWP Yes Yes

Training Yes Yes ALL AVAILABLE PROCEDURES AND PROOF OF TRAINING TO BE ATTACHED!!


METHOD STATEMENT

No LIST SEQUENCE OF ACTIVITIES Hazard Yes No

1. Planning

Medical surveillance to be done on all employees. X

Induction & safety training to be given to all employees. X

Ensure correct PPE is available. X

Ensure correct tools are available. X

2. Inspection

All PPE to be inspected. X

All tools to be inspected. X

Work area to be inspected by Supervisor Rock of previous blast to be inspected for misfires, before new holes could be marked off for drilling. All rock debris to be removed by means of an excavator and truck before commencing work on the next shift. This will prevent people from getting hurt and to fall over unnecessary loose dirt.

X

Daily Safe Task Instructions (DSTI) form to be completed. X

Toolbox meeting will be held every morning before any work commence. See Tool box meeting draft attachment A

X

3. Tasks

Transport Eco-Break cartridges to site. 1. PPE (Personal Protective Equipment) None 2. Equipment Required 2.1 Eco-Break cartridges and accessories must be transported in a

roadworthy vehicle, which can be securely locked with the cartridges/accessories transported out of sight.

2.2 The vehicle must be fitted with a tracking device and a fire extinguisher. 2.3 The driver must be licensed and responsible. 3. Before transporting cartridges and accessories a transport permit, either

continuous or temporary, from the South African Police Service Division of Explosives, must be obtained. This permit operates from the approved place of manufacture to the site where they are to be used. Should cartridges/accessories need to be returned to the place of manufacture a separate temporary transport permit must be obtained for this purpose. No cartridges/accessories are to be transported without an up to date permit.

X


4. A waybill/delivery note is to accompany each consignment stating the numbers of cartridges/accessories and showing the number of the continuous transport permits which is in use. When operating under a temporary transport permit, a copy of the actual permit is also to accompany the consignment.

5. Cartridges and accessories must be in approved, sealed and separate

containers. The vehicle is to be kept locked at all times.

6. Cartridges and accessories must not be transported with any other explosive types or with any other flammable materials.

7. The cartridges/accessories are to be delivered to the site at a time and

according to the procedures specified by the client. This will usually be as per Minerals Act Regulations.

8. Any loss of product is to be reported to the SAPS without delay.

Inspect compressor and drilling equipment

1. Before shit commence: Check if compressor has got enough diesel for the shift and check oil levels.

2. Check running meter of compressor and fill in daily sheet of hours done on previous shift

3. Check oil bottles for air legs and drilling machines 4. Report any visible breakage on drilling equipment to site supervisor

X

Drill holes for breaking 1. PPE (Personal Protective Equipment) 1.1 Eye protection 1.2 Ear plugs 1.3 Gloves 1.4 Boots 1.5 Hard Hat 2. Equipment needed 2.1 Hole director/collaring device if necessary 2.2 Drill Machine 2.3 Machine oil 2.4 Knock off bits 2.5 Drill steel

X


NB Before any drilling operation to commence the equipment should be checked, hoses blown out and secured to machine with safety clips. All working areas to be clean and no loose equipment around in the proximity. Do not use faulty equipment.

3. Align collaring device with first hole. It is very important to drill all shot holes as parallel - as possible to each other and to the breaking face/point – the burden can not be too open on the bottom of the holes as this will crate excessive burden which will not be broken with.

4. After the first holes are drilled at the breaking face, make use of the hole director provided to give the required burden. Holes must always be collared on the elevation lines marked on the face.

5. The maximum burden allowed between holes and a free breaking point is 40cm. However, it is depending what size of Eco-Break cartridges are going to be applied. It is up to the Blaster to decide on the final burden to be drilled.

6. An extra hole/set of holes may need to be drilled at an angle less than other hole and with a smaller burden. Avoid drilling short holes. They are extremely difficult to be stemmed completely and to be broken with PCF.


Loading of ECO-BREAK cartridges NB: Only trained appointed personnel may charge holes with Eco-break cartridges. All compressed air hoses are to be fitted with the necessary safety attachments to prevent complete separation of a pressurised hose connection.

1. PPE (Personal Protective Equipment)

1.1 Eye protection 1.2 Ear plugs 1.3 Gloves 1.4 Boots 1.5 Hard hat

2. Equipment needed

2.1 Eco stemming cartridges 2.2 Eco-break cartridge 2.3 Approved blowpipe 2.4 Approved scraper 2.5 Charging stick 2.6 Approved ohmmeter/Tester 2.7 Air hose safety attachments

3. Before charging any holes make sure all holes to be charged are

washed/blown out and cleared of any obstructions using an approved blowpipe and scraper.

4. No smoking or naked flame is permitted within 10m of charging operations.

5. Before inserting a cartridge in a hole, make sure the igniter wires are in the protective recess provided at the back and along

X


6. Insert the cartridge into the hole with the End cap side pointing towards the

collar. Gently but firmly push the cartridge to the back of the hole using the charging stick, ensuring that the igniter wires do not come out of their protective recess and that the ends of the wires remain outside the collar of the hole. It is very important that the cartridge is pressed completely to the back of the hole. If uncertain, measure the length of the hole before inserting cartridge.

7. Before loading Eco- stemming capsules into any hole check the moisture

content of the capsule. There must be enough moisture present in the mix to bind the material slightly when it is compressed in the palm of the hand. There must not be so much moisture present so that the aggregate is visibly wet or muddy. Visibly wet or completely dry aggregate must not be used as this may cause blowouts.

8. Test igniter resistances after charging holes to see that the wires have not

been damaged.

9. If igniter resistance is no longer in the correct range (1.6 – 2.5 ohms) blow out stemming with approved blowpipe.

10. It may be difficult to extract the cartridge. If this is the case, insert another prepared cartridge on top of the first. Take care that the igniter wires of the two cartridges do not become mixed up. Re-load the hole with stemming.


Deck charging – Could be used in difficult, fractured ground to avoid creation of “islands”. After one cartridge has been inserted into the bottom of the hole, at least 30cm of stemming should be pumped in before second cartridge (usually smaller) is placed into hole. Then rest of the hole should be stemmed (not less than 30cm). Those igniters should be

Initiation of cartridges Initiation of shot holes as described below is the sole responsibility of the appointed blasting ticket holder.

1. PPE (Personal Protective Equipment)

1.1 Eye protection 1.2 Ear plugs 1.3 Gloves 1.4 Boots

2. Equipment needed

2.1 Firing cables 2.2 Approved ohmmeter/tester 2.3 Approved shot exploder 2.4 Pea whistles

3. Install firing cable from Firing Point to face. Ensure the cable is undamaged

and free from any fouling e.g. scraper ropes. Ensure the cable is not close to any other electrical cable or equipment. Short circuit the firing cable at the blasting point. The shot exploder and key must be in the possession of the appointed blasting ticket holder at all times. Alternatively the shot exploder must be kept in a lockable box at the firing point, to which the appointed blasting ticket will have the key.

4. When the desired section of the face is charged, ensures that the igniter wires are short circuit and if not immediately to be fired, are folded into the collar of the hole where they cannot be damaged during the breaking of the preceding holes.

5. Test the resistance of each hole before connecting to the firing cable.

X


6. Connect the next pair of holes to be fired in parallel to the firing cable.

H/W F/W Firing Cable

NOTE: CABLES ARE NOT SHOWN IN ACTUAL COLOURS

7. Sound pea whistle to alert others that firing is about to take place.

8. Ensure all persons are removed from the danger area i.e. nobody is in danger from the possibility of fly rock.

9. If any guards should be placed they have to be appointed by blasting ticket

holder in writing.

10. Proceed to firing point.

11. At Firing Point, test firing circuit with approved ohmmeter. Resistances should be in the range of between 5 and 20 ohms depending on the length and type of firing cable.

12. If a fault is detected with the firing circuit, check along the firing cable to the face. Find and rectify any faults.

13. Once place is save to fire, then connect the approved shot exploder to the

firing cable, insert the key, sound the siren/give a verbal warning and fire the shots. Remove the key and disconnect the shot exploder immediately after firing.

14. Blaster to make sure all present wear ear plugs while shots are fired.

4. Close Out

Do housekeeping X

Close – out DSTI X


Risk Matrix

Standard Anglo Risk Matrix Hazard Effect / Consequence

(Where an event has more than one “loss type”, choose the “consequence” with the highest rating)

Loss Type (Additional ‘loss types’ may exist for an event; identify & rate

accordingly)

1 Insignificant

2 Minor

3 Moderate

4 Major

5 Catastrophic

(S/H) Harm to People (Safety / Health)

First aid case / Exposure to minor

health risk

Medical treatment case / Exposure to major health risk

Lost time injury / Reversible impact on

health

Single fatality or loss of quality of life /

Irreversible impact on health

Multiple fatalities / Impact on health ultimately fatal

(EI) Environmental Impact

Minimal environmental harm – L1 incident

Material environmental harm –

L2 incident remediable short term

Serious environmental harm – L2 incident

remediable within LOM

Major environmental harm – L2 incident

remediable post LOM

Extreme environmental harm –

L3 incident irreversible

(BI/MD) Business Interruption / Material Damage & Other Consequential

Losses

No disruption to operation / R120k to

less than R600k

Brief disruption of operation / R600k to

less than R6m

Partial shutdown / R6m to less than

R60m

Potential loss of operation / R60m to

less than R450m

Substantial or total loss of operations / R450m and more

(L&R) Legal & Regulatory

Low level legal issue Minor legal issue; non

compliance and breaches of the law

Serious breech of law; investigation/report to authority, prosecution

and/or moderate penalty possible

Major breech of the law; considerable prosecution and

penalties

Very considerable penalties &

prosecutions. Multiple law suits & jail terms

(R/S/C) Impact on Reputation / Social / Community

Slight impact - public awareness may exist but no public concern

Limited impact - local public concern

Considerable impact - regional public

concern

National impact - national public

concern

International impact - international public

attention

Likelihood Examples

(Consider near-hits as well as actual events)

Risk Rating

5 Almost Certain

The unwanted event has occurred frequently; occurs in order of one or

more times per year & is likely to reoccur within 1 year

11 (M) 16 (H) 20 (H) 23 (Ex) 25 (Ex)

4 Likely

The unwanted event has occurred infrequently; occurs in order of less

than once per year & is likely to reoccur within 5 years

7 (M) 12 (M) 17 (H) 21 (Ex) 24 (Ex)

3 Possible

The unwanted event has happened in the business at some time; or

could happen within 10 years 4 (L) 8 (M) 13 (H) 18 (H) 22 (Ex)

2 Unlikely

The unwanted event has happened in the business at some time; or

could happen within 20 years 2 (L) 5 (L) 9 (M) 14 (H) 19 (H)

1 Rare

The unwanted event has never been known to occur in the business; is highly unlikely that it will within 20yrs

1 (L) 3 (L) 6 (M) 10 (M) 15 (H)


RISK ASSESSMENT

NO LIST ACTIVITIES

OF TASK

LIST HAZARDS / RISKS

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RESPONSIBLE

PERSON

1. Transport Eco-Break propellant and igniters to site.

a) Propellant and igniters not stored in separate containers/ uncontrolled initiation. b) Fire. c) Injury to crew members d) Fire

5

3

4

3

2

2

2

2

19

9

14

9

a) Propellant and igniters to be stored and transported in separate containers to prevent possible explosions. b) Containers must be lockable and durable. c). Driver to heed to speed of 10 km/ph on site and only follow specified route. Also to be guided by flagman. d) Serviceable fire extinguisher to be available at all times on vehicle.

2

2

2

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2

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5

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Eco-Break

2. Inspect compressor and drilling equipment

a) Oil and diesel spillage b) Damaged to property c) Injury to persons due to burst hoses. d) Loss of production due to substandard drilling machine. e) Fire, burn injuries.

3

2

3

3

3

2

2

3

2

2

9

5

13

9

9

a) Supervisor to ensure that compressor is in a serviceable condition and that all relevant paper work Is in place. b) Hoses to be inspected by drill operator and must also ensure all clamps and fittings are properly secured. c) Drill operator to ensure arrestor cables are fitted to all hose connections. d) Operator to inspect drilling machine for any defects and record his findings on an inspection list. e) Supervisor to ensure that a serviceable fire extinguisher is readily available.

2

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3. Drill holes for breaking.

a) Injuries due to slipping and falling from heights. b) Slips and trips c) Fly-rock - injuries d) Noise e) Dust f) Back injuries due to manual handling of heavy equipment.

2

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a) Visually inspect the rock to be broken and decide on the best location to drill the holes to maximise the broken volume. b) All loose material to be removed from rock that is going to be broken. c) Operator to ensure that hole being drilled is as close to vertical as possible to prevent fly rock. d) Employees to wear earmuffs. e) Employees to wear dust masks and safety spectacles. f) Heavy equipment to be manhandled by two persons to prevent possible back injuries, using legs to lift.

2

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2.6.1

Eco-Break

4. Loading of ECO-BREAK cartridges.

a) Injuries, people too close to blast. b) Production loss – poor blast. c) Blasting accident due to static electricity d) Misfire e) Damage to igniter wire.

4

3

3

3

3

2

2

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14

9

13

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13

a) A minimum safe distance of 50 metres away from breaking area to be barricaded off and signs to be placed. b) Eco-Break operator to ensure good confinement of hole during placement of cartridge. c) Wooden tamping tool to be used to push cartridge into hole. d) Operator to ensure igniter is properly inserted into igniter port of cartridge to prevent misfire e) Caution must be taken when tamping stemming material into hole as not to damage igniter wire.

2

2

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5. Initiation of cartridges.

a) Fly rock injuries and damage to property. b) Flying debris. c) Injuries due to entering a barricaded area. d) Misfire

4

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3

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3

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18

13

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a) Sufficient amount of conveyor belt to be placed over rock to prevent flying debris. b) A clearance of 50 metres must maintained by operator and all employees. c) Area to be controlled by flagman. d) SEE ATTACHED ECO –BREAK PROCEDURE

2

3

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3 3 13 ON HOW TO HANDEL A MISFIRE 2 2 5

6. Do housekeeping

a) Trip slips and fall 3 3 13 a) All rock debris to be removed by means excavator and truck.

2 2 5 2.6.1

Eco-Break

required and existing control measures: (submit … - riskassessments/eco-break cartridges in...

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