021-pro-earth work.pdf

Pearl GTL Project

LINDE ENGINEERING

Contractor Project No : 5887 Shell Project No: HP-3000-QAT

Project Document Number: T- 4.234.144 Project Rev.: B Page 2 of 19

Purchase Order Number: 2MH127

N/A Tag/Item Number(s):

ASU Unit(s):

Z PCWBS:

QATAR SHELL GTL PROJECT (PEARL) C2 AIR SEPARATION UNITS CONSTRUCTION

E B 28.01.2008 Ready For Construction SB UA MC/ZG RFC

D A 25.11.2007 Company Comments Incorporated IU UA/IO MC/ZG CCI

C O Issued for Company Comments MS MC ZG ICC

B O Issued for Review MS MC ZG IFR

A O Issued for Internal Review MS MC ZG IIR

Approved By

GAMA Project Rev Rev. Date Description

Prepared By

Checked By Status

No. No. ORIGINATOR

Document Title:

LINDE ENGINEERING AG PROCEDURE FOR EARTHWORKS

Document No.

GAM PRO QAC GTL 021 E LOC470

Contractor

Gama Qatar Co. W. L. L. Org.

Code Doc. Type

Disc. Code

Geogr. Area

Seq. No

Rev. No Vendor Code

Project Document Number: T-4.234.144 Rev No: B

Doc. Title : GAM-PRO-QAC-GTL-021 Rev. E Procedure For Earthworks

Date : 28.01.2008

T-4.234.144 Rev. B Page 4 of 19

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TABLE OF CONTENTS

1. SCOPE ________________________________________________________________________5 2. PURPOSE _____________________________________________________________________5 3. REFERENCES _________________________________________________________________5 4. DEFINITIONS _________________________________________________________________5 5. RESPONSIBILITIES ____________________________________________________________6 6. PROCEDURE __________________________________________________________________7

6.1. Materials _________________________________________________________________________7 6.2. Type A Fill Material________________________________________________________________7 6.3. Type B Fill Material ________________________________________________________________8 6.4. Type C Fill Material________________________________________________________________9

7. Excavation _____________________________________________________________________9 7.1. Sub-grade Preparation_____________________________________________________________10 7.2. Backfilling/Filling and Final Grading_________________________________________________10

8. Testing _______________________________________________________________________11 9. ATTACHMENTs _______________________________________________________________11


Date : 28.01.2008

T-4.234.144 Rev. B Page 5 of 19

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1. SCOPE

This Quality Control Procedure relates to the verification of all construction activities for Earthworks.

2. PURPOSE This Quality Control Procedure defines the documentation to be collated and the inspections to be carried out in order to verify and record that all earthwork activities are conformant to the requirements in the Project Specification.

3. REFERENCES

T-13.376.490 Project Specification for Site Preparation DEP 34.11.00.11 Site Preparation and Earthworks, including tank Foundations and

Tank Farms

T.13.376.352 Amendments and/or Supplements to Site Preparation and Earthworks, including tank Foundations and Tank Farms

T-4.234.573 ITP for Site Preparation and Earth Works.

4. DEFINITIONS Company : QSGTL and/or its PMC Contractor or Linde : Linde Engineering AG Sub Contractor or Gama : Gama QATAR Contract : QSGTL Pearl Plant-C2 ASU Construction Works QCE : Quality Control Engineer QCI : Quality control Inspector ITP : Inspection Test Plan


Date : 28.01.2008

T-4.234.144 Rev. B Page 6 of 19

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5. RESPONSIBILITIES Site Engineer is responsible for the following:

Excavation Backfilling/Filling Final grading/levelling Compaction

To ensure that the surveyor has completed setting out reference points complying with the approved drawing.

To ensure that all parties who are required to make any kind of test or inspections are properly informed of the programme of the works and inspection and testing requirements.

Initiating the Request for Inspection and transmitting in a timely manner to QA/QC department.

The QCE will be responsible for the following:

To ensure that all QCI's and Lab Technicians are properly informed as to the daily work programme and delegating actions to QCI.

Review of all Documentation and Reports. Rising of relevant Request for Inspections and transmission to the CONTRACTOR

Quality Department 24 hours before the scheduled inspection or test.

The QCI will be responsible for the following:

To ensure that he is fully aware of the daily construction programme. To ensure that he attends all inspection points in a timely manner and records the

results of his inspections on the appropriate forms.

Completion and filing of all inspection records under his responsibility and reporting to QCE.


Date : 28.01.2008

T-4.234.144 Rev. B Page 7 of 19

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The Lab. Technician will be responsible for the Following:

To ensure that he is fully aware of the daily construction programme. To ensure that he attends and performs the required test properly in a timely manner

and records the results accordingly.

Reviewing and issuing all relevant lab. test reports to the QCE in a timely manner.

6. PROCEDURE

6.1. MATERIALS

Suitable fill materials shall be free from refuse or other waste materials, large (> 100 mm) cobble or boulder sized fragments, or other material which might prevent proper compaction or cause the compacted fill to perform inadequately or have insufficient stability or bearing capacity for the loads to which it is likely to be subjected.

6.2. TYPE A FILL MATERIAL Type A material shall be used under all foundations and shall comply with the following specification: - Type of soil: Inorganic and free draining with no more than trace amounts of organic matter, gypsum or other salts. Particle size: 50mm max. Fines content: 15% max. Gradation: Well graded Liquid Limit: 25% max. The fill shall be placed at optimum moisture content, in loose layers not exceeding 225mm thick, each layer should be compacted with suitable equipment to not less than 95% of the maximum dry density (MDD) as determined from the modified Proctor test. Quality control of compaction operations shall be made by field density testing; using approved means, at an initial frequency of one test every 300 m2 per layer.


Date : 28.01.2008

T-4.234.144 Rev. B Page 8 of 19

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6.3. TYPE B FILL MATERIAL

Type B material may be used as fill for the following purposes:

1. Roadway and paving sub-grade

2. Embankments

3. Grading of general areas to be used by construction or plant operation

Preferred properties of Type B fill shall meet the following criteria:

Type of soil: - Inorganic and free draining with no more than trace amounts of organic matter, gypsum or other salts.

Particle size: 75mm max.

Fines content: 30% max.

Gradation: Well graded

Liquid Limit: 40% max.

The fill shall be placed at optimum moisture content, in loose layers not exceeding 300mm thick. Each layer should be compacted using appropriate equipment to not less than 90% of the MDD, with the exception of the top 300mm, which shall be compacted to a minimum of 95% maximum dry density (MDD) as determined from the modified Proctor test.

Quality control of compaction operations shall be made by field density testing; using approved means, at an initial frequency of one test every 750 m2 per layer.


Date : 28.01.2008

T-4.234.144 Rev. B Page 9 of 19

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6.4. TYPE C FILL MATERIAL

Type C material shall only be used as fill at locations where the installation of structures or equipment is not planned or in open areas where only grading is required. Properties and characteristics of Type C fill should satisfy or exceed the criteria given below: Type of soil: Inorganic, granular or silty soil with low to negligible gypsum/salt content Particle size: 100mm max. Fines content: 50% max. Gradation: Well graded Liquid Limit: 50% max. Type C material should be placed in loose layers not exceeding 600mm and may be compacted using bulldozers and/or other types of grading equipment.

7. EXCAVATION Excavation shall be carried out generally, in accordance with the lines, levels and profiles shown on latest RFC drawings. Prior to commencement of excavation work, Survey/setting out of area to be excavated.

Establish control or reference point to check the extent or depth of excavation.

Dewatering system shall be provided if necessary to remove water from the work or ensure the stability of excavation during construction.


Date : 28.01.2008

T-4.234.144 Rev. B Page 10 of 19

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7.1. SUB-GRADE PREPARATION After excavations are completed to the specified elevation, or after the removal of top soil or the unsuitable material, the sub-grade shall be checked for soft spots or depressions prior to the construction of facilities or the placement of any fill material. The excavated area shall be backfilled with suitable material. Below the proposed facilities, under certain conditions, lean concrete may be used as an alternative to compacted soil. Ground water shall be controlled during sub-grade preparation in order to evaluate the condition of the sub-grade or to achieve the required degree of compaction of fill material being used. Sub-grade material shall be scarified to a depth of 150mm prior to placing fill material to provide intermixing of fill and sub-grade materials and to avoid stratification of the two materials.

7.2. BACKFILLING/FILLING AND FINAL GRADING Backfilling/Filling and final grading shall be carried out generally in accordance with the lines, levels and profiles shown on drawings.

No fill material shall be placed until the area has been cleared and prepared to receive filling operation.

All fill material shall be tested and approved prior to use.

Correct type of fill material is being used, layer thickness and compaction method

properly observed.

Appropriate types of equipment or tools are available for the work.

Compaction tests are carried out satisfactorily as required.

Final surfaces, elevations and slopes in various areas shall be as shown on drawing with the tolerances in accordance with the Project Specifications are completed,

Final elevations shall be checked on a specific record sheet.


Date : 28.01.2008

T-4.234.144 Rev. B Page 11 of 19

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8. TESTING

Testing of materials will be as per sec. 11.3 and 11.4 of T- 13.376.490.

One test for every 1000m3 or change in source.

Compaction Test will be done for every 400 m3 for Type A, B, C.

Area/Location to be decided with Contractor/Company.

9. ATTACHMENTS GAM-QCR-QAC-GTL-001 : Checklist Initial Earthworks GAM-QCR-QAC-GTL-002 : Atterberg Limits GAM-QCR-QAC-GTL-003 : Density - test GAM-QCR-QAC-GTL-004 : Partical Size Distribution Soil GAM-QCR-QAC-GTL-005 : Laboratory - Compaction GAM-QCR-QAC-GTL-006 : Checklist Surveyors Report GAM-QCR-QAC-GTL-007 : Checklist Backfill Foundations Utilities GAM-QCR-QAC-GTL-008 : Checklist Excavation Foundations Utilities

INSPECTION CHECKLIST

EARTHWORKS

CLEARING AND GRADING

FORM NO: GAM-QCR-QAC-GTL-001 Rev.0 ITP: GAM-ITP-QAC-GTL- Date :

Location Bldg/Area : Drawing Reference Nos :

SIGN OFF AS ACCEPTED

GAMA QATAR LINDE PEARL GTL Name Position Signature Date

0.

1 Check work site, stock pile haul roads, disposal areas and any existing utilities clearly identified N/A YES NO 2 Check that the Surveyor has established bench marks and confirmed elevations N/A YES NO

3 Check work site and any existing utilities staked out (confirmed by surveyor or attach surveyor's report) N/A YES NO

4 Check provisions for de-watering (if appl.) N/A YES NO 5 Check provisions for demolition of existing structures. (if appl.) N/A YES NO 6 Check valid work permits obtained for all areas N/A YES NO 7 Check site cleared of all unsuitable soil & rubbish N/A YES NO 8 Check all unsuitable material hauled away to designated disposal area. N/A YES NO 9 Check any retained soils are properly stock piled N/A YES NO

10 Check retained soils appear acceptable and sampled as required N/A YES NO

11 Check site properly graded to designated levels (confirmed by surveyor or attach surveyor's report) N/A YES NO

12 Check base soil appears acceptable & sampled as required N/A YES NO 13 Check base scarified (if required) N/A YES NO

Comments:

ITP NO: GAM-ITP-QAC-GTL-

Air DriedAs ReceivedOven Dried

26

24

22

20

18

16

14

Weight of Dry Sample + Container (g)

4

LIQUID LIMIT

I I I ITest No.1 2 3

Cone Penetration (mm)

Average Cone Penetration (mm)

Container Number

Weight of Wet Sample + Container (g)


Weight of Container (g)

Weight of Dry Sample (g)

MOISTURE CONTENT (%)

SAMPLE

PLASTIC LIMIT

Container Number


% + 425 mic

LIQUID LIMIT

PLASTIC LIMIT

THE ABOVE DETERMINATION WERE PERFORMED IN ACCORDANCE WITH B.S 1377 PART 2

PLASTICITY INDEX

GAM-QCR-QAC-GTL-002FORM NO:


PENETRATIONOF CONE (MM)



Weight of Moisture (g)



CHECKED BY :

GAMA QATAR LINDE PEARL GTL

LABORATORY TECHNICIAN : DATE :

PEARL GTL ASU PROJECT

ATTERBERG LIMITS TEST FORM

IN-SITU SOIL DENSITY TEST NUCLEAR METHOD

FORM NO: GAM-QCR-QAC-GTL-

003 Rev. 0

ITP REF. NO: GAM-ITP-QAC-GTL- REV. 0

DATE:

Moisture Content Standard Count : C.P.M

Maximum Dry Density : Kg / m3 Req. No :

Date :

Test No. Location of Testing

Wet Density Mg / m3

Moisture Content

( % )

Dry Density Mg / m3

Degree of Compaction

( % )

Layer Thickness = Required Compaction % = Average :


Wet Density Mg / m3

Moisture Content

( % )

Dry Density Mg / m3


( % )



Wet Density Mg / m3

Moisture Content

( % )

Dry Density Mg / m3


( % )


The above tests were performed using : ASTM D-2922 SOIL DENSITY & ASTM D-3107 MOISTURE CONTENT SIGN OFF RELEASE


LABORATORY TECHNICIAN: DATE:

PEARL GTL ASU PROJECT.

PARTICAL SIZE DISTRIBUTION SOIL

FORM NO: GAM-QCR-QAC-GTL-

004 Rev.0

ITP REF. NO: GAM-QCR-QAC-GTL- REV. 0

DATE:

COARSE MATERIAL FINE MATERIAL

SIEVE SIZE WEIGHT RETAINED PERCENT RETAINED

PERCENT PASSING

WEIGHT RETAINED

PERCENT RETAINED

PERCENT PASSING

ASTM ( g ) ( % ) ( % ) SIEVE SIZE ( g ) ( % ) ( % )

3 inch 75 mm

No. 10 2 mm

2 inch 50 mm

No. 20 850 mic.

1 inch 37.5 mm

No. 40 425 mic.

1 inch 25 mm

No. 50 300 mic.

inch 19 mm

No. 60 250 mic.

3/8 inch 9.5 mm

No. 140 106 mic.

No. 4 4.75 mm

No. 200 75 mic.


CHECKED BY :

LABORATORY TECHNICIAN : DATE :

ITP NO: GAM-ITP-QAC-GTL-

DATE :

GAM-QCR-QAC-GTL-005FORM NO:

DRY DENSITY Mg / m3

DRY DENSITY (%)



Weight of Sample + Mould (g)

Container NO.

5

MAXIMUM DRY DENSITY Kg / m3 OPTIMUM MOISTURE CONTENT %

41

Volume of MouldTest Method : ASTM D-1557

.Layers ..Blows per Layer

Initial Mass of Sample g

THE ABOVE DETERMINATION WERE PERFORMED IN ACCORDANCE WITH ASTM 1557

2 3

4.5 kg Hand Rammer





Weight of Mould (g)

BULK DENSITY

CHECKED BY :

GAMA QATAR

LABORATORY TECHNICIAN :

PEARL GTLLINDE

PEARL GTL ASU PROJECT

LABORATORY COMPACTION TEST FORM


SURVEYORS REPORT.

FORM NO: GAM-QCR-QAC-GTL-006

Rev. 0


DATE :

Location Bldg/Area:

No :

SIGN OFF WILL CONFIRM RELEASE TO EXCAVATE.


0.

Briefly describe the intention of the Survey and purpose giving details of the utility/ excavation.

Drawing Numbers For Location give Marked up copy of Drawing:

1. Confirm that surveying equipment is calibrated

Calibration Cert No :

2. Check that the drawings noted above are approved for use. N/A YES NO

3. Check all existing utilities are clearly identified and staked out N/A YES NO

4. Confirm that the proposed excavation is clearly staked/ Marked out. N/A YES NO

5. Confirm depth of excavation. N/A YES NO

Surveyors Comments plus any additional survey information.

INSPECTION CHECKLIST BACKFILL

UTILITIES / FOUNDATIONS


Rev. 0


DATE:

Location Bldg/Area: Drawing Reference Nos



0.

ITEM DESCRIPTION BACKFILL UTILITY

1 Confirm that Utility is completed tested and released for BACKFILL N/A YES NO 2 Confirm that sand fill is completed N/A YES NO 3 Confirm that fill is being laid in layers as required by the specification. N/A YES NO 4 Confirm that compaction test have been performed and results recorded. N/A YES NO 5 If the Utility requires tiles to be laid confirm that this has been done. N/A YES NO 6 If warning tape is required confirm that it has been laid N/A YES NO BACKFILL FOUNDATIONS

7 Confirm that the foundation has been released for Coating and Backfill N/A YES NO 8 Confirm that the foundation has been coated with liquid membrane as require by specification N/A YES NO 9 Confirm that the foundation has been covered with hardboard and overlain with polyethylene. N/A YES NO

10 Confirm that fill is being laid in layers as required by the specification. N/A YES NO 11 Confirm that compaction test have been performed and results recorded. N/A YES NO

COMMENTS :


EXCAVATION FOR UTILITIES AND

FOUNDATIONS


Rev.0


DATE:

Location Bldg/Area: Drawing Reference Nos:



0.

ITEM DESCRIPTION

1 Check route/area is clearly staked / Marked out by Surveyor N/A YES NO 2 Check all existing utilities clearly identified and staked out N/A YES NO

3 If Utility trench check that it complies with depth & width shown on drawing. N/A YES NO

4 If foundation Base confirm size and depth are correct to approved drawings/ surveyors report. N/A YES NO

5 Check bedding material for foundation or Utility trench is clean and free of stones and laid to proper depth N/A YES NO

6 For drainage confirm levels falls etc mark on drawing (show levels Manhole to Manhole). N/A YES NO

7 If Geotextile is to be used confirm that it is positioned to the correct requirements. N/A YES NO

8 Confirm base compaction test have to be performed prior to bedding. N/A YES NO

9 Check de-watering properly maintained (if required) N/A YES NO

10 Check trench is properly battered, framed or sheeted (if required) N/A YES NO

1. Stage completion release to lay UTILITY or 2. Blinding for Foundation Base.

COMMENTS :

PRO for EARTHWORK 28-01-08.docThe QCE will be responsible for the following: The QCI will be responsible for the following: The Lab. Technician will be responsible for the Following: Suitable fill materials shall be free from refuse or other waste materials, large (> 100 mm) cobble or boulder sized fragments, or other material which might prevent proper compaction or cause the compacted fill to perform inadequately or have insufficient stability or bearing capacity for the loads to which it is likely to be subjected. Type B material may be used as fill for the following purposes: 1. Roadway and paving sub-grade 2. Embankments 3. Grading of general areas to be used by construction or plant operation Preferred properties of Type B fill shall meet the following criteria: Type of soil: - Inorganic and free draining with no more than trace amounts of organic matter, gypsum or other salts. Particle size: 75mm max. Fines content: 30% max. Gradation: Well graded Liquid Limit: 40% max. The fill shall be placed at optimum moisture content, in loose layers not exceeding 300mm thick. Each layer should be compacted using appropriate equipment to not less than 90% of the MDD, with the exception of the top 300mm, which shall be compacted to a minimum of 95% maximum dry density (MDD) as determined from the modified Proctor test. Quality control of compaction operations shall be made by field density testing; using approved means, at an initial frequency of one test every 750 m2 per layer.

001-checklist Initial earthworks.doc002-atterberg limits.xls003-density-test.doc004-PARTICAL SIZE DISTRIBUTION SOIL.doc005-LABORATORY-COMPACTION.xls006-checklist surveyors report.doc Surveyors Comments plus any additional survey information.

007-checklist backfill Foundations Utilities.docITEM DESCRIPTION

008-checklist excavation Foundations Utilities.docITEM DESCRIPTION

021-pro-earth work.pdf

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