MDPE Laying

Assam GA 11.03

TEZPUR/MANGALDOI/SIPAJHAR/DEKHIAJULI/BISHWANATH GEOGRAPHICAL AREAS

MDPE Pipe line laying in all type of surface except hard rock using any laying methodology

(a) Receiving, handling, loading, transportation and unloading of owner supplied MDPE pipes from Owner's designated stock yards to Contractor's own stock-yards/ work-sites. Proper storing, stacking, identification, providing security and insurance cover for the materials. Procurement and Installation of PE Fittings, PE Valves, Transition Fittings PE Pipe 20mm (PE 100 SDR11) x GI Pipe 1/2" and PE Pipe 20mm (PE 100 SDR11) x GI Pipe 3/4",Warning Mats,Saddle HDPE casing Pipes, Half concrete sleeves and other items required for execution shall also be in Contractor's scope. { Preparation of detailed route plan, making trial pits by liasoning with local authorities/ public to determine the underground utilities/ services etc. If Required, Liasioning shall be carried out by the contractor in the interest of completion of work. However, No extra payment shall be made.}. Laying rates quoted anywhere in this SOR shall be inclusive of all Liaison expenses. storage of FIM in contractor’s own store, barricading the work area as per the procedures & drawings provided in the tender and as per the directions of EIC / site-incharge. Dewatering of trenches / pits if required as per site condition.Repairing of all damaged utilities if any, and payment of any compensation (if claimed by owner / other utility agencies). Trenching to the required depth in all type of surface except hard rock (however putting up sufficient protection/casings whithout any additional cost at locations where proper depth cannot be attained), uncoiling / stringing of pipes, jointing of the pipe ends/ fittings/ valves by qualified personnel, using approved electro fusion techniques as per the specification. Laying Methodology (Open Cut / Moling / HDD) shall be decided as per instruction of EIC in the respective areas. (b) Preparation and getting approval of schedules, execution procedures, drawings/ sketches/ wherever required, making trial pits by liasoning with local authorities/ public to determine the underground utilities/ services etc., restoration of the abandoned/ trial pits of any depth to original condition. (c) Lowering the MDPE pipeline in trench, padding around pipeline with suitable soil, laying of PE warning mat over the pipeline along the complete route and backfilling with available excavated material, if suitable, after screening or procurement of suitable sand/ soil as per directions of EIC/ Site-In charge. Compaction with manual techniqe/ jumping jack compactor and water at subsequent layers of 150mm, placement of all tiles/ slabs/ curb stones etc. removed during excavation. Roads, pavements, footpaths etc. shall be made motorable wherever pipeline is laid. Cleaning the area of all unserviceable materials, debris, excess earth near trenches to the designated disposal area as per specifications, instructions of land owners/ EIC to the complete satisfaction of local authorities. The laying shall be carried out by any methodology as per specification in consultation with EIC. The list of areas where the pipeline to be laid/ allocation of work will be done after awarding of the tender. The quantities are tentative and it may be changed during the tenure of contract as per the requirement of the Owner.

(d) Procurement & installation of GI Sleeves, 2.5" NB x 300 mm length to 3" NB x 300 mm length GI Sleeve / Half Round Concrete Sleeves for domestic connections/ commercial and industrial installations as per Instruction of Owner/Owner's representative for satisfactory completion of job. Excavation, breaking through any obstructions, insertion of pipe, sealing the annulus, firm fixing of the sleeves with concrete mix, preparation of pedestal & restoration of excavated pits within the size of pedestal & the same pit with the laying of pipe as defined in technical specification / instruction of EIC. (e) Preparation, Certification and submission of (DPR) daily progress reports, graphs, As-built drawings, crossings details, utility graphs and deviation statements. Restore all surrounding ground features to that as existing before and as directed by EIC, which would include replanting of any uprooted trees etc. Pneumatic testing and commissioning as per specification and approved procedures , providing all tools and tackles, test ends, Nitrogen, instruments, manpower and other related accessories as per the instructions of the EIC. Returning of all unused material to Owner stores on completion of Gas Charging. Submission of all documents required for contract closure as mentioned in the contract. Any other activities related to operation / safety / statutory / maintenance of the works not mentioned above shall also be covered under the Scope of work and has to be completed by the Contractor within specified schedule without any extra cost to Owner. (f) Final clean-up of right-of-use or area disturbed by contractor during their construction activities for laying of pipeline works and disposal of debris and surplus material to designated disposal areas and backfilling of trench and compaction of the same as per satisfaction of Owner and / or as directed by Engineer–in–charge.

(g) Handing over the completed works to Owner for their operation/ use, reconciliation of material area wise. (h) Includes laying of pipeline in all type of surface except hard rock i.e. all kinds including Kutcha, metal, concrete (PCC/RCC), bituminous, tiled, brick lined etc. after raking up of hard surface of any type. Roads, Pavement, Footpaths etc. shall be made motorable once the pipeline is laid. (i) Laying using any method (Open trench including chipping method, Moling and/or HDD) with or without casing, it Includes survey of the under ground utilities, submission of site plans/layout drawings and HDD profiles for approval by EIC, execution of the work as per the specification, including excavation of the pits, moling with hole size not exceeding 20% of the the pipe dia. Jointing and insertion of the carrier pipe in casing pipe (on case to case basis) and subsequent backfilling, compaction, submission of as-graphs and as-built drawings as per the attached specification and the instruction of EIC/ Owner. (j) Taking of UTM coordinate at every 10 mtr. of interval, Refrence Points with Landmarks & inform to Owner in the approved format. Coordinate shall be taken as per instrument approved by Owner. (K) Any other activities not mentioned / covered explicitly above, but otherwise required for satisfactory completion / operation / safety / statutory / maintenance of the works shall also be covered under the scope of work and has to be completed by the Contractor within specified schedule at no extra cost to Owner. All the work shall be executed in accordance with the provision of contract.

MDPE Pipeline laying in all type of surface except hard rock by open cut method without casing

Laying of pipeline in all type of surface except hard rock by open trench method after raking up of surface of any type . Roads, Pavement, Footpaths, Kutcha etc. shall be made motorable once the pipeline is laid. The other activities are as per SOR Item No. 1 and as detailed in specification and as per the instructions of the EIC / Site engineer of Owner.

Laying, testing, purging with nitrogen & commissioning of 20 mm dia pipe

Laying, testing, purging with nitrogen & commissioning of 32 mm dia pipe