7/29/2019 Double Seal Surface Treatment - Method Statement

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SUMMARY OF CONTENTS

1. Scope of Works32. Reference Documents.33. Materials34. Plant and labour .........35. Construction46. Hazards and Risks5

7/29/2019 Double Seal Surface Treatment - Method Statement

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1. Scope of Works

This method statement describes the operations required to undertake the

double seal surface treatment on primed GCS base on newly constructed

shoulders. The seal is done in two separate operations.

2. Reference Documents

General Specifications for Road and Bridge Works Republic of Uganda Volume 3A Section 4200 and 4300 Special conditions of Contract Tender Dossier Volume 4 Section 4200

and 4300

Quality Control Plan: 110.199/QCP/0053. Materials

MC3000 cutback bitumen complying with specification BS 3690 Approved surface dressing chippings, nominal sized 10/14 and 6/10

4. Plant and Labour

Binder Distributor, calibrated and approved. Roads authoritycertificate valid for 12 months.

Mechanical broom Front End Loader Rear Mounted, on tipper trucks, chip spreaders, checked and set to

application rates of aggregate being applied.

Tipper Trucks

Farm Type Tractor and Trailer Surfacing foreman Labour Hand Tools(hard brooms shovels)

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5. Construction

Confirm primed base on shoulder approved for surfacing Ensure traffic control measures in position and correct Check survey, setting out, demarcate are to be sealed Clean and prepare area to remove all loose material or dust before

first application of seal.

Set out edge lines for binder distributor and chip spreaders to follow Obtain approval and confirm application rates for MC3000 and 10/14

aggregate from Engineers representative.

Dip distributor, record quantity and temperature of binder in vehicle Position binder distributor, chip spreaders, roller Distributor sprays closely followed by chip spreader pneumatic roller

other chipping vehicles on first seal.

Check application of MC3000 sprayed by dipping binder distributor,record quantity and application rate.

When chipping vehicles and roller have completed the chipping androlling, proceed with the following section to be sealed.

Back chip, broom and pneumatic roll first seal and prepare to receivesecond seal, either the same day or within 48 hours.

Second seal operations the same as for the first seal. On completion of the double seal, obtain approval from Engineers

representative and open road to traffic.

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6. Hazards and Risks

Risk assessmentsRefer to: - Health and Safety Plan 110.199/PRM/QSE/HSP/001

- BASIL READ Hazard Identification and Risk Assessment FormsOn going risk assessments and training of personnel is seen as paramount

importance to site management with the view to maintain a high priority on

safety risks issues.

Environmental risksRefer to: - Environmental Management Plan: 110.199/PRM/QSE/EMP/001

The following environmental risks have been identified:

Dust Fuel and oil spillage

Spillage of MC3000 Smoke and vapor emissions Waste Material

Measures to control and minimize risks are in place and the monitoring of

these controls remains the responsibility of all site personnel.