DESCRIPCIÓN DEL CARGO Y DE LAS RESPONSABILIDADES DEL

Top Index

Scope

Reference documents Definitions

Responsibilities Safety

Method including traffic management scheme Equipment

Attachment

Scope

The statement is aimed to propose the procedures to be adopted to carry out the excavation at the road crossing to facilitate to lay the pipe lines 1 # each 20” Raw Ethane and 6” Propane at locations identified on the attached drawing to the following references

Reference documents

Specification Excavation & Backfilling for Underground structures.

Drawing No.

Easement Systems Avenue “C”

Piping Interconnection Drawings, Avenue ‘C’

Definitions

PSM Project Site Manager CSM Construction Manager

CS Construction Superintendent

SE Site Engineer

FM Foreman

QC Quality Control

Responsibilities

PSM shall control the overall operations

CM shall arrange the resources required accordingly and be overall responsible for the excavation operation

CS shall control, monitor and direct the SE, FM and workforce for the operations

SE shall be responsible for all the site operations and follow the instructions of the CS Any mishap on the excavation operation shall immediately be notified to the CS and the CM for the immediate action if so required for any possible remedy or record or the authority review whatsoever,the case may be

FM shall execute the operations deploying the workforce. FM shall explain in full in the language the work persons understand about all the instruction and the ToolBox talks every day and check that the same are followed up regularly

QC shall inspect all the operations according to the specifications EPC Contractor shall conduct surveillance

Safety

Prior to the commencement of any activity the labour force shall receive a Toolbox talk relevant to the operation concerned on the project site safety requirements. Any process is adopted having a particular safety risk shall be assessed and addressed as required to raise to a minimum standard / an acceptable mark.

In the present case the excavation has to be carried out on the Operating Authority area, therefore all the regulated precautions shall be resorted to effect a full safety standard.

ToolBox Talks-

While conducting ToolBox Talks, a representative from the authority shall be involved to witness and sign the instruction imparted with the workers prior to the commencement of the operations to make a record. Only English literate Foreman shall be employed to work on the excavation execution.

Excavation Work Permit- A copy of the work permit shall be posted on a mini board installed on site to be noticeable to all the relevant persons involved on the crossing

Traffic Management-Sign boards keep up-All the personnel shall be briefed about the safe keep up of the boards

Barricades,cones, markers and the night-lights, flood lights etc. shall be arranged as required for a complete safety. No oil spillage shall be allowed.

The sides of the excavation shall be sloped with the barriers placed to indicate the excavation work in progress

Flagman-On both the direction, in addition to the traffic sign boards, a flagman shall be engaged to operate full time to direct the traffic about the excavation work in progress by waving the flag for all the vehicles passing by

Hand Excavation- Excavation required to be by hand shall only be carried out manually. In case certain services not shown on the record drawings such as fibre optics cable is discovered, the excavation shall be ceased to be continued until the decision to hydrojetting is taken up and the authority are involved.

Jack Hammer- The worker engaged on operating this equipment shall use protective glass and work in phases with pause intervals. The compressor air pressure shall be monitored from time to time so that the hammer works smoothly. The compressor shall be place within the barricade limits

Access to trench- The workers shall clearly be instructed to use only the ladders to enter in or come out. No jumping shall be allowed

Machine Excavation

Statements were written by Professional Eng Suraj Singh Project Manager as well as Senior Project Engineer. Most of these were approved by EPC Contractor & Company (no sketches

The operators shall be explicitly explained and instructed about the requirement of the reverse signal and sound when operating reverse. The truck driver shall also be instructed similarly.

Banksman shall be engaged while the equipment operate.

No violation of the traffic rules shall be allowed Deep Trenches

If required, the shoring shall be provided to prevent the caving in. In case of the trench depth being more than 1200 mm. Adequate means of exit such as Aluminium ladder or steps shall be provided and located no more than 8 m of lateral travel.

Plants preservation

The live plants and the trees arboricultured shall be deplanted integrally with the roots and preserved to the specialist requirement so that these remain live till the replantation is carried out all to the satisfaction of the specialist

Safety Supervision

A competent inspector shall inspect the trench daily to assess the safety measures adopted.

Method

The required permit to work shall be obtained from the Plant Refinery Division.

The record drawings regarding the existing services shall be obtained.

A traffic management scheme has been presented herein and shall be produced on site as detailed on the attached sketch for this road crossing which includes, reduced speed sign, temporary diverted roads sign, men at work sign, warning signs, informatory signs, safety barriers, night lighting and road cleaning activities etc.

The traffic management scheme shall be reviewed and approved by EPC Contractor prior to commencing the work.

The aforesaid traffic management scheme shall be implemented as described below:

TRAFFIC MANAGEMENT SCHEME ROAD CROSSING – First Street / Avenue ‘C’

Drawing reference –24168-P40-310-00005 Rev O

This proposed crossing is located on the Road Avenue ‘C’ between the following Co-ordinates as shown on the referred drawing.

This is a 2-way road with a central verge and carrying 2 lanes on either way The proposed crossing is located about 160 m from 1^st street road towards North One serving electric pole is located away from the x-ing

The minor irrigation / hoses are serving on the central verge

Some minor trees and plants are arboricultured on the central verge.

The road shall be divided in 2 parts as shown on the sketch as lane L1 and L 2 on either side of the carriageway.

In the first instance the work shall be carried out on part L1 diverting the traffic to the road portion on the part L2 as shown on the sketch.

In the second instance the work shall be carried out on part L2 diverting the traffic to the road portion on the completed road portion on the part L1 as shown on the sketch.

The directory signboards shall also be placed on the 1^st street road East West on both ways to indicate the work at the crossing

For the traffic North to South the first reduce speed for traffic diversion informatory board depicting shall be located at 300 m from the point of the proposed crossing, the second

depicting diversion signs be located at 200 m and the third depicting men at work sign be located at 100 m on either way in the opposite directions.

For the traffic South to North past crossing, one sign shall be placed to direct for the diversion, to slow down and the men at work ahead

A Flagman shall be engaged full time on both the directions to guide the traffic about the ongoing excavation operations in addition to the conventional signboards

The following activities are involved. Reference to the marked note ‘B’ on the Easement Systems Drawing

To produce the Traffic Diversion Management Scheme

To excavate by hand and expose all the underground facilities 5.5KV / 0.24KV cables are available

Trial pits to be excavated in size 5mx2mx1.5m deep by hand tools To seam the area with the detectors to ascertain the access to the cable

To expose the cable fully and to be inspected by the authorities / Operating Authority

After the exposure, all the cables to be covered with split PVC pipe to continue the excavation mechanically according to the authority directions and as agreed

To excavate the remaining portion by the excavator machine To have authority inspection

The pipes to be laid by others

To fill the bedding material according to the specification requirement To reinstate the diverted services

To reinstate the central verge to the existing state Details

The Traffic Management Scheme shall be executed as explained in the foregoing and to the traffic manual directions.

The first section of the proposed road crossing as per the attached sketch shall be marked by the surveyor on the actual location. Any existing services shall be identified from the Record drawings and measures to protect resorted to according to the regulations.

The asphalt shall be cut using jackhammers

The road section shall be excavated to the existing cables manually for which the trial pit may be made prior to the full manual excavation is proceeded and after ascertaining the safe procedures the exposures be completed.

After the exposure of the cables, the Operating Authority authorities shall inspect and the cables be diverted accordingly following which the remaining machine excavation be carried out to the specified levels

The excavated material shall be removed from the site to stockpile area.

Appropriate bedding material shall be placed within the excavated trench to the correct service level. Where required, this bedding shall be compacted and tested.

The excavated trench shall be inspected by the authorities as required.

The potable and the Desalinated water pipes shall be laid by others.

Backfill around the service pipes shall be carried using the appropriate material.

The service pipes surrounding material shall be compacted as per the project specification requirements. Test results shall be provided for the specification conformance verification.

The existing services shall be reinstated accordingly.

Statements were written by Professional Eng Suraj Singh Project Manager as well as Senior Project Engineer. Most of these were approved by EPC Contractor & Company (no sketches

The plants or trees if removed and so required, shall be reinstated accordingly.

General fill up to the underside of road formation shall be placed in 150mm compacted layers using mechanical methods to the specification requirements.

A concrete slab shall be cast up to the bottom of the finished asphalt level.

The finishing shall be carried out using approved asphalt mix.

The traffic management system shall be removed after the road crossing has been cleaned of any debris or obstructions.

Either side of the road shall be provided with cable markers to indicate the services Major Equipment

Excavator.Dump trucks.Compactors.

Jack Hammer, Compressor, Attachment

Sketch showing the traffic management scheme Drawings including the traffic diversion

#74