Foundation of steam Generator under progress. This is last lift of the foundation where all the foundation bolts are placed temporarily. Engineers are checking the same with the help of Total Stations so that bolts can be locked with the template before pouring of concrete.
Series of foundations are shown here . This includes raft ,pile cap and final lift of foundations including placement of foundation bolts. Concrete blocks shown in the pictures are for pile load testing. Some of the unbroken piles are also seen here.
This is a picture of TG bay inside power house on early day of construction On the above all main power TG Deck supporting structures for Turbine and Generator auxiliaries will come to existence.
Completed foundation at TG Bay is shown. Preparation of removing shuttering is under progress. Pocket cleaning and final dressing under progress before offering to mechanical sub vendor for final checking and erection of equipment.
Fuel oil ( LDO or HFO) tank erection under progress. Please see the foundation retainer wall .
During last write up we have mentioned about different testing and sampling to be done as per Field Quality Plan. Frequency of sampling and testing of some of the major ingredients are given below.
Bulkage , Moisture Content (Routine test) Every day IS 2836
Cement
Setting Time , Comprehensive strength , Fineness One sample from each Batch IS 4031
Thus we have completed our discussion on civil job of thermal Power station. If posted all
queries will be answered . However please refrain from advertising product on blog. From
next writing we will discuss about the structural work of the power station.
During last write up we have mentioned about different testing and sampling to be done as per Field Quality Plan. Frequency of sampling and testing of some of the major ingredients are given below.
Frequency of sampling and testing
Grain Size Analysis One in every 2000cu.m /type/source IS 2720
Shrinkage Limit & Free Swell index One in every 5000cu.m /type/source IS 2720
Organic matter, Calcium Carbonate, PH etc One in every 5000cu.m /type/source IS 2720
Standard Proctor test , Moisture content of fill One in every 2000cu.m /type/source IS 2720
Dry density and Permeability Test Random Test
Coarse Aggregate
Particle Size and Shape ,Moisture Content One in every 100cu.m /type/source IS2836
Specific gravity , density, voids, absorption Once in 12 weeks /source IS2836
Flakiness and petrographic examinations Once in 12 weeks /source IS2836
others ,soundness ,Reaction with alkali etc Random.
( Acceptance criteria will be governed by IS383.)
Fine Aggregate /Sand
Particle Size and Shape One in every 100cu.m /type/source IS2836
Specific gravity , density, voids, absorption ,
Soundness and petrographic Examination,
Mortar making Properties , Reaction with
Alkali,. Once in 12 weeks /source IS2836
Soundness and petrographic Examination,
Mortar making Properties , Reaction with
Alkali,. Once in 12 weeks /source IS2836
Bulkage , Moisture Content (Routine test) Every day IS 2836
Cement
Setting Time , Comprehensive strength , Fineness One sample from each Batch IS 4031
Water
Harmful
substances, pH value, initial
setting time, compressive strength. Once in a month/source IS 456
Concrete
Slump and compaction Factor One Sample/2hr / mixing plant IS 1199 & IS456
Crushing Strength IS 456 IS 516
Water Cement Ratio , Cement content Random IS 1199
Thus we have completed our discussion on civil job of thermal Power station. If posted all
queries will be answered . However please refrain from advertising product on blog. From
next writing we will discuss about the structural work of the power station.
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