Concrete Preparation General

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JOB SAFETY ANALYSIS– Part 1

Company details

Company Name: IRMASUD Traveux Constructions Contact Name, Position and phone number:

Email [email protected]

Address: City 11 December 1960 Guemar 39400 El Oued

Project details

Project: GEG Exploration Area: Guern El Guessa Labiadh Sidi Cheikh

Job Address: GEG Block

Job Description: Concrete Preparation operations Pertaining to Civil Work

Activity:

Concrete Preparation – General

This JSA has been developed in consultation with: JSA Approved by: Name:

Signature: Date:

Page 1 of 12

Name: Signature: Job Title: Date:

Tahar Berrachedi BG HSE Client 21-04-2011

Personnel responsible for monitoring and managing activity:

Site supervisor IRMASUD HSE SUPV

Overall Risk Rating After Controls

1: Low 2:Medium 3:High

ALL PERSONS INVOLVED IN TASK MUST HAVE THIS JSA COMMUNICATED TO THEM PRIOR TO WORK COMMENCING

JSA NO: ACTIVITY : REVIEW NO: DATE:

Authorized by: Page 1- Version 7.0

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• Amendments must be approved by IRMASUD/BG Management and communicated to all affected workers before work resumes.

Personal Protective Equipment

General:

Safety footwear, gloves, protective clothing (overalls), eye protection. Dust masks ,

Where required:

Hearing protection, high visibility shirt or vest, hard hat, Rubber gloves ,breathing protection, disposable masks, rubber boots and safety goggles. Safety Notes

1. Fresh concrete has a very powerful caustic effect on skin owing to the alkaline nature of cement. Freshly mixed concrete, mortar, grout and slurry may cause skin irritation including alkaline burning and dermatitis.

2. The abrasive effects of sand and aggregate in the concrete aggravate the condition and effects range from dry skin, irritant contact dermatitis and allergic contact dermatitis to severe burns.

3. These burns can take several hours to occur and can be very painful.

Foot Protection Hearing Protection High Visibility Head Protection Eye Protection Hand Protection Protective Clothing

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4. Avoid contact with skin by wearing suitable clothing and PVC gloves. 5. All site safety notices are to be clearly visible

6. MSDS sheets available on site 7. Eye Wash station

8. Suitable / approved ladders and or scaffolding to be made available when carrying out cellar construction 9. All electrical equipment must be tested prior to use by a certified electrician (Mixer , Vibrator Generator )

Signature: Date:

Scale Assessment Description

3 High The controls in place are weak and are not mitigating the risk. There is scope for significant improvement of controls.

2 Medium The controls in place are partially mitigating the risk. There is scope for some improvement of controls.

1 Low Controls are deemed to be able to reduce Residual Risk to a low level; Risk Response Action Plans being actively and successfully managed.

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NOTE: RB = Risk Rating before controls implemented - RA = Risk Rating after controls are implemented. Personnel

requirements Inexperienced or untrained workers pose a risk of unsafe

operation.

Legislation breach

Training:

Should include:

Initial Induction - Specific Site induction-TBT before commencing work

Safe work procedures. Including housekeeping site rules & PPE Review BG life savers modules relevant to BG safe system of work. Fitting of personal protective equipment.

Manual handling.

Repertory related issues awareness (Inhalation Cement dust) Hand injury avoidance

Slips,Trips,Falls

Risk assessment. Personal injury All types Legislation breach

Note:

To be performed and documented by the controller of worksite.

Hazard Identification:

Job site layout

Interaction of contractors – including front end loader Slips trips and falls

Site access and egress.

Access and egress considerations when working on cellar (ladder)

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Procedure (in steps):

Possible Safety or Environmental

Hazards

RB Control Measures to Reduce risk RA

Responsible Officer

NOTE: RB = Risk Rating before controls implemented - RA = Risk Rating after controls are implemented. Formwork checks

before pouring. Personal injuryFalls Crush Hit by Legislation breach Litigation Note: ‘Formwork’ includes:

• the forms on which concrete is poured;

• the supports to withstand the loads imposed by the forms and concrete; and

• Any bracing added to ensure stability.

Ensure:

All materials and equipment used are fit for their intended purpose and meet design specifications.

Formwork complies with the design. i.e. either a ‘formwork designer’ or a ‘professional engineer’s specification.

Specifically: • Base is stable.

• Suspended slabs are able to safely support loads that might be applied during pouring.

• Frames, props and timbers are correctly spaced. • Joist and bearer sizes are correct.

• Jack extensions are acceptable; and

• There is adequate bracing to ensure stability.

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NOTE: RB = Risk Rating before controls implemented - RA = Risk Rating after controls are implemented. Reinforcing mesh Personal injury

Strains and sprains; Eye injury

Electrical shock & fire hazard

Manual handling:

Ensure loads are light enough for individuals to carry or there is help available.

Cutting/Welding

Ensure safety glasses/ear protection is worn when cutting with bolt cutters or power grinder. Ensure all electrical tools are fit for purpose. Welders should ensure suitable eye protection is worn (welding mask)

Where required a PTW (hot work) should be opened and fire hazards have been addressed – fire extinguisher, fire screen – spotter in place at all times

Supporting mesh:

Place reinforcing mesh supports, where required, in place on the day of the concrete pour to reduce tripping hazard

Concrete delivery – Suitable location: Personal injury: Electric shock Struck by Legislation breach Area to be: Easily accessible.

Reasonably level with a firm base.

Must be able to support the fully loaded delivery trucks. Must have clearance from obstructions, power lines and

excavations.

Traffic control where required – Example: When reversing, low clearance, obstacles, tight access or high vehicle and/or pedestrian traffic situations.

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Hazards

NOTE: RB = Risk Rating before controls implemented - RA = Risk Rating after controls are implemented. Concrete Pumping Personal injury:

Struck by Ensure:No people, other than those workers directly involved in the concrete pumping/Mixing operation, are in the operational safety zone.

End hose is fitted with a suitable stop or end cap if it is being manoeuvred over people.

Hopper grill is in the closed position.

Pump flow rates match discharge rates of concrete delivery trucks.

That the directions of the hose-hand are followed.

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NOTE: RB = Risk Rating before controls implemented - RA = Risk Rating after controls are implemented. Concrete working

and placement Personal injury:Sprains and strains Fatigue

Skin rash or allergy/dermatitis; Concrete burns

Ensure:

PPE fits correctly – Example - waterproof boots should be high enough to keep concrete from flowing into them.

Formwork maintains line, level, plumb, shape, etc during concreting.

Placing concrete:

Note – To reduce manual handling concrete should be placed as

close as possible to its final destination.

Shovels - Square ended shovels are recommended for evenly

spreading concrete. (Round edged shovels will not spread the concrete evenly.)

Flat, Even Sites - Start placing at the furthermost corner of the

formwork from where the concrete is mixed or delivered. Always work towards the source of concrete supply, never away from it.

Sloping Sites Start at the lowest point and work upwards to the

highest point.

Formwork – Do not exceed the maximum rate of permitted

placement.

Height - Not higher than required by the boxing. This will reduce

the amount of manual handling of wet concrete. Do not lift concrete with a shovel, rather rake or push as required.

Lift reinforcing mesh – where required - by pulling it up with a

large hook to centre of the final slab.

Vibrating:

Ensure that the edges are well vibrated to remove any air pockets.

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Hazards

NOTE: RB = Risk Rating before controls implemented - RA = Risk Rating after controls are implemented. Concrete working

and placement – Continued

Personal injury: Sprains and strains Fatigue

Skin rash or allergy/dermatitis; Concrete burns

Screed:

Concrete by pulling a suitable aluminium or wood straight edge across the wet concrete. Screeding removes excess concrete and identifies low positions.

Bullfloat:

Eliminates high and low spots and embeds large aggregate particles immediately after strike off. Should be finished before excess moisture or bleed water appears on the surface

Concrete finishing Personal injury: Sprains and strains Contract breach

Poor concrete finish

Note:

Do not finish concrete while there is bleed water on the surface as this will increase the water to cement ratio which can cause crazing.

Do not start final finishing until the concrete can support the weight of a person, leaving only slight surface imprints. Prevent indentations being formed in the concrete.

Float / Trowelling:

Floats are usually made of timber, trowels of steel. Use to even out any minor lumps on the concrete. Sweep it in an arc-shaped motion, keeping the edge at the front of your sweep slightly raised, lest the float dig into the concrete.

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NOTE: RB = Risk Rating before controls implemented - RA = Risk Rating after controls are implemented. On Completion – Stripping formwork / boxing Personal injury: Crush Structural collapse of poured floor Sides:

Can be removed after several hours to enable trowelling of exposed edges.

Floor:

The time between pouring and formwork stripping depends on the job specifications, the cure required, and whether the form is supporting any weight, but is usually at least seven days after the pour has been completed.

On Completion –

Clean up Personal injury:Concrete burns Personal Hygiene:Wash all exposed skin – ensure coveralls are washed separately from other clothing, wash hands before eating

Tools:

Wash all tools

Excess Concrete:

Place in small stacks (about a shovel full) and allow to dry for safe removal.

Empty cement sacks

All empty bags/sacks are to be disposed of as per site instructions

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Hazards

NOTE: RB = Risk Rating before controls implemented - RA = Risk Rating after controls are implemented. First aid

Eye wash station MSDS Sheet Rescue equipment including spinal boards if working in excavations (cellar) Contact:

Skin - Wash immediately with clean water.

Eyes - Wash immediately and repeatedly with eyewash solution or clear water. If irritation persists seek medical attention.

Note:

Indirect contact through clothing can be as serious as direct contact. Promptly rinse out wet concrete, mortar, cement or cement mixtures from clothing.

Transporting (Cement loader) Personal injury Possible fatality. Struck by. Incorrect operation of plant. Traffic violation Driving:

Only trained competent operators may drive loaders (licenses to be checked prior to employment)

The loader must be operated in accordance with site regulations at all times

Speed limits, obligatory and recommended, are to be observed.

Personnel are NOT to be:

Carried in the cabin

Lifted in or in anyway operate from within the buckets. Walk under raised attachments

Cleaning

Loaders are to be cleaned in accordance with site specific regulations

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required for the job: employees undertaking the task: (All employees must be trained in relevant procedures.)

Appropriate license and certificate. Relevant training.

Site specific inductions. Training in this JSA

Performing BG life saver presentation relevant to BG safe system of work.

Details of regulatory permits/licenses required:

Engineering Details/Certificates/Work

Cover Approvals: Codes of Practice, Legislation:

PPE to comply with relevant Standards

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Plant/Tools/Equipment: (List plant and equipment to be used on the job.) Maintenance Details: (Include maintenance on cranes, forklifts, electrical equipment etc.)

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including safe work instructions and Personal Protective Equipment described.

Name Qualifications Signature Date Time Employer

Review No. 1 2 3 4 5 6 7 8 9

Name and initials Date