Top Index
Scope 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 crossings to construct culverts to facilitate to lay the pipe lines
1 # each 14” Desalinated water, 8” Potable water and
1 # each 20” Raw Ethane, 8” Natural Gas and 6” Propane at locations identified on the attached drawing pertaining to avenue C / First Street Road Crossing at existing Fire Station
Safety
Prior to the commencement of any activity the labour force shall receive a / STARRT card / Toolbox talk. Any process involving a particular safety risk shall be assessed and adopted measures addressed, to raise to a minimum standard
In this case the excavation has to be carried out on the Operating Authority area, therefore all the regulated precautions shall be strictly adhered to have ‘ full safety standard’ effect.
Safety Supervision
A competent inspector shall visit the area daily to assess the safety measures adopted. Any snag observed during his visit shall be notified to the supervisor present who immediately act to bring the adopted safety measures to an acceptable standard
In case of incident where utilities not identified are discovered or damaged, all work shall stop in the area and the Operator Shift Controller and HSE department immediately notified
Phone number : Shift Controller Emergency Number HSE Direct number
Employees working in easement area shall have a daily pre-task briefing that includes;
Reporting of incidents
Methods of work and tools to be used
Potential hazards found in the Easement areas The approved work method statement
EPC Contractor and Civil Contractor HSE department shall participate in presenting the STARRT card briefing and monitor the activities to ensure that the work methods are being followed and all personnel have an understanding of the hazards associated with working adjacent to live process areas
Excavation Work Permit- A copy of the work permit shall be posted on a mini board installed on site to be noticeable to all persons involved with the crossing
Barricades, cones, markers, night-lights, and floodlights etc. shall be installed as required for a complete safety. No oil spillage shall be allowed.
Flagman-On all directions, in addition to the traffic sign boards, flagmen shall be engaged full time to direct the traffic about the ‘excavation work in progress’ by ‘flag signal’
Hand Excavation- Excavation to expose the services shall be carried out manually.
In case certain services not shown on the record drawings such as fibre optics but it is discovered, further excavation shall be ceased until a decision is taken for the method to be adopted for further excavation
Access to trench- the workers shall clearly be instructed to use only the ladders to enter in or come out of the trench. No jumping shall be allowed
Machine Excavation
The operators / drivers shall be explicitly instructed to abide by the requirement of the reverse signal and sound when operating reverse. Banksman shall be engaged during equipment operation. No violation of the traffic rules shall be allowed
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
Pre cast members
Since pre cast culvert units, covers and sleepers are heavy in load, proper care has to be exercised during raising & downing (handling) to the exact locations strictly adhering to the relevant safety measures
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 shall be produced as detailed on the attached sketch Drawing reference Piping Interconnections Road Avenue ‘C’:
Existing Services
One serving electric pole is located away from the crossing towards North The minor irrigation / hoses exist to irrigate the central verge plantation
Street light electric cables exist & Some minor plants also growing on the central verge.
The road shall be excavated in two instances by diverting the traffic on either lane completing one after the other as shown on the traffic management scheme
Procedures
Traffic management scheme shall be implemented effectively
Existing services from the central verge shall be diverted or protected as required and directed by the competent concerned authority
Instance 1
The asphalt and the central verge pertaining to the crossing portion Stage-1 shall be removed Hand excavation shall be carried out to expose the cables & the other services employing seaming the area with detectors to detect the existence of cables
After the exposure, all the cables shall be covered with split PVC pipe & well supported temporarily to continue the excavation mechanically
Remaining portion of the trench shall be excavated by machine to the defined levels Preparation of the trench to construct RCC culverts shall be carried out
The construction pertaining to the pipe carrying culverts including the laying of pipe sleepers anchored with standard dowels, covers, fixing steps etc.shall be carried out according to the drawings and the approved procedures using pre cast RCC units / members
In addition, one access boxout at the end shall be provided to design details The diverted services shall be reinstated
Inspections shall be conducted to the requirement
Backfilling up to the road formation shall be carried out according to specifications The broken asphalt portion shall be made good using new asphalt
Instance 2
The aforesaid activities shall be repeated for this instance for the crossing portion Stage-2 The central verge shall be made good & the diverted services reinstated
The traffic management scheme shall be removed after the road crossing is cleared of all debris and obstructions.
75-mm dia holes in the pre cast units meant for lifting shall be filled with concrete Access boxout shall be closed with concrete after the pipes are laid
Either side of the road shall be provided with cable markers to indicate the services
8 mm galvanised removable chequer plate covers with 2 lifting handles shall be provided to design details. Other chequer plates shall be provided to the design details
Major Equipment
Excavator, Dumper trucks, Compactors. Jack Hammer, Compressor, Asphalt finisher, Road Rollers
Attachment
Sketch showing the traffic management scheme