l-01 introduction to erection - 000

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23 May 2012 PMI Revision 00 1

INTRODUCTIONTO ERECTION


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ROLE OF ERECTION DEPARTMENT IN NTPC

NTPC has been entrusted with the responsibility toengineer the Project from concept to commissioning state intotality and thereafter operate Super Thermal PowerStations.

Construction management of such large STPS involves amulti-disciplinary approach over a diversified area ofactivities from the state of preconstruction till start up andprecommissioning state.

Construction management functions involve executing aSTPP during various phases of construction activities i.e.from taking a green site till handing over of erected andtested equipments for commissioning.


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Construction line function involves different disciplines :-

1. Civil construction including structural fabrication. 2. Mechanical equipment erection. 3. Electrical erection. 4. C&I erection.

As per NTPC Corporate philosophy construction has beenorganized into two major groups :- i) Construction : This includes civil construction and structural fabrication. ii) Equipment Erection : This includes erection of mechanical,

electrical and C&I equipments. Equipment erection involves erection of all plant and systems such as

boiler, turbo-generator, auxiliary systems like Coal handling system,Electrical and C&I system.


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BROAD FUNCTIONAL RESPONSIBILITIES FOR

EQUIPMENT ERECTION GROUP :- To ensure proper co-ordination with the contractors for timelyexecution of various equipments erection work, at site as per

contract agreements / LOIs.

To allot necessary land and infra-structure facilities to variouscontractors to enable them to mobilize their work-force and

proceed with the erection work as per schedule.

To plan, monitor and review the erection work on a regularbasis so that work progresses as per schedule.


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To ensure all work-fronts, inputs and resources are

regularly made available during course of executionof the work and to preempt any foreseen hold-ups

due to non-availability of any of these.

-- To exercise judicious control over consumption of bulk material and other consumables.

-- To ensure that quality of erection work meets the

company standards and norms. -- To maintain checks and ensure proper work

measurements.


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EQUIPMENT ERECTION :-

Execution and Supervision system Objective :-

To ensure that equipment erection works are completed

within the time schedule of overall construction Network so asto enable the start-ups, trial runs and pre-commissioning

activities of equipments, system within the frame-work of

overall project schedule.


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Basic responsibilities of erection execution

supervision group are :- 1. Study of LOI / Bid Documents :- a) Scope of work and terminal points. b) Location, lay outs, technical specification and erection methodology for various equipment.

c) Quality plan. d) Contractors resource commitment. e) Contractors schedule. f) Scope of supply and erection.

2. Land allotment and infrastructure services.

3. Erection planning implementation of detailed construction planning system. 4. Monitoring of equipment despatch, transportation,

receipts and expediting.


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5. Work front release :-

a) Erection plans are finalized.b) Availability of fabrication and erection drgs.

c) Availability of erectable equpt. at site.

d) Availability of bulk materials and erection matl.e) Helping and lifting equipment requirements and

their detailed deployment plan.

f) Availability of civil works front.6. Equipment supply and receipt where

erection and supply are split up.


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7. Erection supervision Aims at assisting the

contractor to work efficiently in terms of quality and

parameters.

a) Inspection of works and field quality control.

b) Measurement of work for decision of making payment.

c) Taking over of erected equipment for

commissioning.

d) Completion reports and contract closure.


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ISSUES IN ERECTION

Responsibilities

Safety

Statutory regulationsContract closing


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CONSTRUCTION EQUIPMENTS

TOWER CRANE(50T) / BK-1000(100T) / FMC(350T)

GANTRY CRANECRAWLER CRANE:- TATA1055(90T)

TATA955(75T)

TATA655(36T)

TATA320(18T)HYDRA CRANE

BULL DOZER

TRACTOR/TRAILER

WELDING SETS

ROAD ROLLER

AIR COMPRESSOR

LOCO SHUNTER

BFR-WAGONS


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ELECTRIC/HAND/PNEUMETIC WINCHES/SLINGS/PULLEY BLOCKS

DERRICKSWELDING GENERATORS/TRANSFORMER, HEAT TREATMENT EQUIP.

TIG/ARC WELDING EPUIPMENTS, DRYING OVEN

JACKS/PIPE BENDING M/C, CHAMFERING M/C

SMALL T&P---CHISELS, SRAPPERS, SPANNERS,HAMMERFILES, SCREW DRIVERS, WIRE ROPES

HACK SAWS. DRILLING/GRINDING M/C

ELECTRICAL TOOL, ULTRSONIC TESTING M/C

REDIOGRAPHY SOURCE

MEASURING INSTRUMENTS

SPACE CLIMBER


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CLASSIFICATION OFCHECKS

CHECKED/WITNESSED BY

COUNTERCHECK BY ACCEPTINGAUTHORITY

DISPOSITIONINGAUTHORITY

CRITICAL / A FQA CQA AS PERNECESSARY

FQA HEAD / CQA INCONSULTATION WITHENGG

MAJOR/ B EXECUTING DEPT. FQA HEAD /EXECUTINGDEPT.

HEAD / FQA INCONSULTATION WITHGM PROJECT

MINOR / C CONTRACTOR REP. EXECUTING DEPT. EXECUTINGDEPT.

HEAD / EXECUTINGDEPT.

a. FOR RECEIPT INSPECTION STORAGE,ASSEMBLY AND ERECTION

EXECUTING DEPT. MEANS

CONCERNED ERECTION/CONSTRUCTION ENGINEER

b. FOR PRE-COMMISSIONING & COMMISSIONING CONCERNED PRE-COMMISSIONING /O&M ENGINEER AND ERECTIONENGINEER


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