Qc Tower Erection

QUALITY CONTROL

SHEET NUMBER DOCUMENT ISSUE NUMBER

INSPECTION TEST PLAN FOR TOWER ERECTION

SHEET REV. DATE

CONTRACT NO. N- 6445:- 400kV OHL CONNECTION TO NEW 400/132/33 KV AJMAN GRID STATION CHECK/TESTING SR. NO.

1

DESCRIPTION OF ACTIVITY

Tower Erection

SUB-ACTIVITIES (ITEMS TO BE CHECKED)

1. Materials i. Bottom Assembling ii. Top Assembling

STAGE WISE INSPECTION

1. Visual checking

2. Cleanliness & Galvanizing 2.Erection of Towers Assembles

1.Sequence of erection

2.Check for completeness

3.Tightening of nuts and bolts

3. Tower footing resistance (TFR)

TFR at locations

REF.DOCUMENTS

Structural Drawing / Approved Tower schedule/BOM & As per Tech. Spec. S-OHL-T (Rev 1,2005)

BY M/s KEC

BY M/s TRANSCO

QC RECORDS

Surveillance

Review

Surveillance Surveillance

Review Review

100% at each location by SE/ Foremen

Surveillance

Review

Check list for erection/ Tower Check report of each location

As per Approved Drawings Technical Specifications

100% at each location by SE/ Foremen

Surveillance

Review

Check list for erection

As per Approved Drawings Technical Specifications

100% at each location by SE/ Foremen/Surveyor

Surveillance

Review

Statistical checking for tightening of bolts

As ADWEA Tech. Specifications S-EARTH-GROUND ( REV. 3- 2005)

100% at each location by SE

Surveillance

Review

Check list for Tower Footing Resistance of each location

As per Approved Drawings S-OHL-T (Rev 1,2005) Technical Specifications/ Method statement As per Approved Drawings Technical Specifications

100% of item members at stores

BY M/s LAHMEYER

Random Checking With Elcometer 100% at each location by SE

Received Cum Damage Report (RCDR) / Factory Inspection Report (FAT)

Approved tower Schedule. Check list for erection of each location

Legend : Witness: Representative from to Client/Consultant as well as person's from third party / KEC in whose presence inspection and test carried out in Construction/ Production period to determine and prove that the product is satisfactory and acceptable for further Course. Review:Verification of Documents and procedures by Client /Consultant/KEC to ascertain whether the information given is correct and worth acceptable for approval. Surveillance:During Construction/ Production period Client/Consultant as well as person's from third party / KEC need to check the measurement/ Quantum of work to allow further Course. PM-Project Manager, SE-Site Engineer

Approved ByProject Manager Ramesh Babu

1 OF 1 KEC/QC/TE/766 0 0 12.08.2010

32/33 KV AJMAN GRID STATION REMARK

Review of Inspection and Test reports furnished by the supplier

LAHMEYER INTERNATIONAL

Contractor

Consultant

Client

CHECK LIST FOR TOWER ERECTION

Name of the Line :

Location No:

Approved Drg DTS No:

Drg No :

Date :

Type Of Tower :

S.No

Result

1

Setting period of foundation is allowed for at least 14 days as per Spec. Back filling is O.K

Yes/No

2

All tested tools, plants and safety equipment are available at site and in working condition

Yes/No

3

All Tower members, Nuts/Bolts are available at site without any damage, bent or rusting

Yes/No

4

Shutdown of Power Line, if required, is arranged

Yes/No

5

Required no of safety Helmets, Safety Belts & Safety Shoes are being used.

Yes/No

6

First section is completely fitted with all bracing members and all plane diagonals are placed in proper position.

Yes/No

7

All Nuts/Bolts, Flat/Spring washers are provided as per approved drawings.

Yes/No

8 9 10

QC Format-8

Item Checked

All horizontal Bolt heads are facing inside and vertical bolt heads are facing upwards Subsequent section are erected, only after ensuring that previous section is erected completely with all bracing members. Any undue stress, bending or damage of member during erection noticed.

Observation

Yes/No Yes/No Yes/No

11

Any filling of holes or cutting of members during erection observed

Yes/No

12

Any heavy hammering of bolt casuing damage of threads noticed.

Yes/No

13

Tightening is done progressively from top to bottom + Tightness checked by torque wrench.

Yes/No

14

Threaded portion of bolts projcected out side of nut is not less than 3mm

15

All bolts at the same level are tightened as per Specification

Yes/No

16

Slipping/running over Nuts/Bolts are replaced by new ones.

Yes/No

17

Details of missing member , nut bolts etc

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18

All left over holes are filled with correct size of Bolts/nuts.

19

Tower Accessories

Yes/No

All the following tower accessories are fixed as per specification/approved drawing.

a)

Number Plate

Yes/No

b)

Danger Plate

Yes/No

c)

Phase plate

Yes/No

d)

Aviation signals/paints as per specification using Standard quality of welding rods.

Yes/No

20

Tack welding is done as per specification using Standard quality of welding rods

Yes/No

21

Zinc Rich (90%) cold galvanizing paint applied over tack welding.

Yes/No

22

Tower footing resistance

Certificate :

Ohm

Tower Erection is completed in all respects and footing resistance is within permissible limits.

Remarks

KEC

Lahmeyer International

TRANSCO

Contractor Representative

Consultant Representative

Client Representative

Name

Name

Name

Signature

Signature

Signature

Date

Date

Date

QC Format-8

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