Procedure for Cleaning,Flushing,Gauging and Hydro Testing of Pipelines

East-west Gas Pipeline Project Construction Procedure for Cleaning, Gauging And Hydro testing of Pipelines Rev.: A1 China Petroleum Pipeline Bureau（CPP） Document No.: EWPL00-COS-PR-0014 Annexure：Pipeline Filling – Log of operations Section: Joint no from __________________ To ______________________ OD (mm) Source: Inhibitors (Yes/ No): Dosage (ppm) Fill pump Location: Model: Max pressure (bar) Dosing pump Make: Output (M3/ min): Flow meter Make: Sr. no. Pig sequence Pre-fill length (mtrs) 1st pig type Volume (m3) 2nd pig type Model Calibration valid upto Model: Max. pressure (bar): Make: Output (M3/ min): Wall Thk ( mm) Min: Max: ID (mm) Min: Max: Material: API 5L Gr X70 Length (Kms) Volume (M3) Testing medium: (Water) Location : Type of inhibitors: Filling direction From Km __________________________ To km __________________________ Length between 1st & 2nd pig 1

Fill pressure (bar) Flow Vol (m3) between 1st & 2nd pig Time meter Volume (m) 33Cum. Vol. of water pumped after 2 pig ndreading (m) this period Fill water temp. Remarks (m) 3 Page 45 of 56

East-west Gas Pipeline Project Construction Procedure for Cleaning, Gauging And Hydro testing of Pipelines Rev.: A1 China Petroleum Pipeline Bureau（CPP） Document No.: EWPL00-COS-PR-0014 Note:

1. Reading to be recorded half hourly;

Remarks: ________________________________________________________________________________ ________________________________________________________________________________________ Acceptance of section filling: Yes/ No Signature Name Date Contractor REAL

Page 46 of 56

East-west Gas Pipeline Project Construction Procedure for Cleaning, Gauging And Hydro testing of Pipelines Rev.: A1 China Petroleum Pipeline Bureau（CPP） Document No.: EWPL00-COS-PR-0014 Annexure：Air Volume Calculations Section: Joint no from __________________ To ______________________ OD (mm) Wall Thk ( mm) Min: Max: Min: ID (mm) Max: Material: API 5L Gr X70 Length (Kms) Volume (M) 3

Air volume test carried out at ______ % of test pressure Test station location Test pressure (bar) 2 Make DEAD WEIGHT TESTER Dead weight tester (bar) Model Avg pipe temp (deg C) ?p Pressure lowering (bar) Vi Volume of water (ltrs) Calibration valid upto: Date & time Initial After first lowering After 2 lowering nd

Air volume calculations

Formula:

Vp = ((0.884 x ri / t)+ A) x 10 x Vt x ?p x k Where

Vi = Volume of drained water (m3)

Vp = Computed water volume to lower the pressure in the section by ?P (m3) ri = Nominal inside radius of pipe (mm) t = nominal pipe wall thickness (mm)

A = Water compressibility factor at given pressure and temp x 10 Vt = Geometric volume of section (m3)

K = A dimensionless co-efficient equel to 1.02 for longitudinally welded pipe ?p = Lowering of pressure (bar)

Page 47 of 56

-6

-6

East-west Gas Pipeline Project Construction Procedure for Cleaning, Gauging And Hydro testing of Pipelines Rev.: A1 China Petroleum Pipeline Bureau（CPP） Document No.: EWPL00-COS-PR-0014 Vi/ Vp = 1 to 1.06

Remarks:

_____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________

3

ACCEPTED / NOT ACCPTED

Signature Name Date

Page 48 of 56

Contractor REAL Other