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EPC WORKSFORCONSTRUCTION
OF OIL TERMINAL AT HFZ
AGREEMENT NO. 10-5638-E-1
ABU DHABI
OIL REFINING COMPANY PROJECT PROCEDURE
METHOD STATEMENT FOR DOMEFRAME INSTALLATION
DOC. NO.: 5638-E1-1500-CA-PRO-203Page1 /17
Rev.
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EPC WORKSFORCONSTRUCTION
OF OIL TERMINAL AT HFZ
AGREEMENT NO. 10-5638-E-1
ABU DHABI
OIL REFINING COMPANY PROJECT PROCEDURE
METHOD STATEMENT FOR DOMEFRAME INSTALLATION
DOC. NO.: 5638-E1-1500-CA-PRO-203Page2 /17
Rev.
2
This page is a record of all revision of this document. All previous issues are hereby supersededand are to be destroyed.
REV DATE DESCRIPTION PRPD CHKD REVD APPRD COMPANY
2 17/06/13Issue for
constructionYB Dinesh ZZP WLY
1 20/05/13 Issue forconstruction
YB Dinesh ZZP WLY
0 03/04/13Issure forcomments
YB Dinesh ZZP WLY
B 01/04/13Issure forcomments
YB Dinesh ZZP WLY
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EPC WORKSFORCONSTRUCTION
OF OIL TERMINAL AT HFZ
AGREEMENT NO. 10-5638-E-1
ABU DHABI
OIL REFINING COMPANY PROJECT PROCEDURE
METHOD STATEMENT FOR DOMEFRAME INSTALLATION
DOC. NO.: 5638-E1-1500-CA-PRO-203Page3 /17
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PARAGRAPHS REVISED IN THIS ISSUE
Para. No. Para. No. Para. No. Para. No.
5.1.13 Attachment 1
5.3.1
5.3.2
5.3.3
5.3.4
5.3.5
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EPC WORKSFORCONSTRUCTION
OF OIL TERMINAL AT HFZ
AGREEMENT NO. 10-5638-E-1
ABU DHABI
OIL REFINING COMPANY PROJECT PROCEDURE
METHOD STATEMENT FOR DOMEFRAME INSTALLATION
DOC. NO.: 5638-E1-1500-CA-PRO-203Page4 /17
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TABLE OF CONTENTS
No. DESCRIPTION PAGE
1 PURPOSE....................................................................................................................... 5
2 DEFINITIONS AND ABBREVIATIONS................................................................... 5
2.1 Definitions............................................................................................................. 5
2.2 Abbreviations....................................................................................................... 5
3 CODES AND STANDARDS............................................................................................ 5
4 RESOURCES................................................................................................................ 6
4 1 M 6
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EPC WORKSFORCONSTRUCTION
OF OIL TERMINAL AT HFZ
AGREEMENT NO. 10-5638-E-1
ABU DHABI
OIL REFINING COMPANY PROJECT PROCEDURE
METHOD STATEMENT FOR DOMEFRAME INSTALLATION
DOC. NO.: 5638-E1-1500-CA-PRO-203Page5 /17
Rev.
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1 PURPOSE
The method statement is applicable to the lattice dome frame Installation in Jet A-1 Tanks
T-501, T-502, T-503, T-504.
2 DEFINITIONS AND ABBREVIATIONS
2.1 Definitions
COMPANY ABU DHABI OIL REFINING COMPANY (TAKREER)
CONTRACTOR Sinopec international Petroleum Service Corporation
May One possible course of action
PMC WS ATKINS & OVERSEAS PARTNERS
Shall/must/is to be A mandatory requirement
Should A non-mandatory requirement
2 2 Abb i ti
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OF OIL TERMINAL AT HFZ
AGREEMENT NO. 10-5638-E-1
ABU DHABI
OIL REFINING COMPANY PROJECT PROCEDURE
METHOD STATEMENT FOR DOMEFRAME INSTALLATION
DOC. NO.: 5638-E1-1500-CA-PRO-203Page6 /17
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5638-E1-1500-CA-PRO-201 Construction procedure for Tank fabrication and erection
5638-E1-1500-QA-ITP-MEQ-001 Inspection And Test Plan For Storage Tank
5638-E1-1500-QA-PRO-001 Project Quality Plan
AFC drawings
5638-E1-1500- MEQ -DWG-506 DOME COVER PLATE DETAILS JET A-1 TANK
STD-MF-0024 Method of Tank Erection
4 RESOURCES
4.1 Manpower
Tank Engineer 1
QA/QC 1
HSE officer 1
welder 8
Ri i i 1
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OF OIL TERMINAL AT HFZ
AGREEMENT NO. 10-5638-E-1
ABU DHABI
OIL REFINING COMPANY PROJECT PROCEDURE
METHOD STATEMENT FOR DOMEFRAME INSTALLATION
DOC. NO.: 5638-E1-1500-CA-PRO-203Page7 /17
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3 nos. movable aluminium scaffolding with a maximum height of 7metre with three planks
Minimum distance between planks not more than 2 metre, connected by ladder
Stay pole at the four corners of the scaffold
Dedicated labours to move scaffolding .
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CONSTRUCTION OF OILTERMINAL AT HFZ(EPC-1)
AGREEMENT NO. 10-5638-E-1
ABU DHABI
OIL REFINING COMPANY PROJECT PROCEDURE
METHOD STATEMENT FOR DOME
ROOF INSTALLATION
DOC. NO.: 5638-E1-1500-CA-PRO-203Page8/17
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AGREEMENT NO. 10-5638-E-1
ABU DHABI
OIL REFINING COMPANY PROJECT PROCEDURE
METHOD STATEMENT FOR DOME
ROOF INSTALLATION
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5.1.5 Identical slots (48 nos.)at equal intervals are provided on the ring beam allowing
lateral movement of the dome frame along the slot to adjust the dome to required
profile during erection.5.1.6 The Dome roof is a spherical structure with rounded bottom, reinforcement pates
are to be bolted on the ring beam (rounded bottom) and ensured to be in position as
per drawings.
5.1.7 Dome frame members shall be identified and marked clearly before installation, to
prevent frame members(primary and secondary) and other accessories misused.
Twoinstallation personnel with movable Aluminum Alloy Scaffoldingshall be
engaged in the erection of Dome frame member.
5.1.8 After installating upto 5 layers, the reinforcement plates shall be welded and the the
slots on the ring beam can be plug welded, start full welding of the support plates
B(96 nos ) and the ring beam to the shell.
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CONSTRUCTION OF OILTERMINAL AT HFZ(EPC-1)
AGREEMENT NO. 10-5638-E-1
ABU DHABI
OIL REFINING COMPANY PROJECT PROCEDURE
METHOD STATEMENT FOR DOME
ROOF INSTALLATION
DOC. NO.: 5638-E1-1500-CA-PRO-203Page10/17
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AGREEMENT NO. 10-5638-E-1
ABU DHABI
OIL REFINING COMPANY PROJECT PROCEDURE
METHOD STATEMENT FOR DOME
ROOF INSTALLATION
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5.1.12 The spherical shape of the dome is achieved by inter-connecting different members
in their respective nodes.Each members are connected to the node plates by bolts.
5 1 13 Aft ll th d f b bl i li h d th i t ith
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AGREEMENT NO. 10-5638-E-1
ABU DHABI
OIL REFINING COMPANY PROJECT PROCEDURE
METHOD STATEMENT FOR DOME
ROOF INSTALLATION
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5.2.2 Prefabricate 10 curve ladders (3000650mm) to avoid welder to slip from the dome
structure during assembly and welding.
5.2.3 According to the drawings(5638-E1-1500-MEQ-DWG-506),lifting by crane and
laying the first dome roof plate in the center.2 mobile scaffoldings will be set under
two sides of plates .The erector will stand in the scaffolding to assist laying the
center dome roof plate and then tack weld the plate. the positioning plate
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AGREEMENT NO. 10-5638-E-1
ABU DHABI
OIL REFINING COMPANY PROJECT PROCEDURE
METHOD STATEMENT FOR DOME
ROOF INSTALLATION
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stand in the curve ladder which top side is fixed to the pipe by belt and the down
side is fixed with handrail.
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AGREEMENT NO. 10-5638-E-1
ABU DHABI
OIL REFINING COMPANY PROJECT PROCEDURE
METHOD STATEMENT FOR DOME
ROOF INSTALLATION
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5.3 Roof Cover plate Welding
5.3.1 First, al l the welding in the dome roof plates shal l be carried out by
intermittent weld from dom e center to bound ary . The top surface of dome
cover sh al l be welded equal ly as per drawings b y 12 welders. Bottom surface
of dome cov er shal l be welded simultaneously in al l the four quarters of the
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AGREEMENT NO. 10-5638-E-1
ABU DHABI
OIL REFINING COMPANY PROJECT PROCEDURE
METHOD STATEMENT FOR DOME
ROOF INSTALLATION
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5.3.6 Temporary angle- steel supports shall be welded to the dome centre cover plates
to secure the welders during welding.the temporary attachments shall be removed
after all the welding has been performed and subjected to NDE as per DGSrequirements.
5.3.7 Bo ttom surface of dome cover shal l be welded in intermittent way as per
Drawings 5638-E1-1500-MEQ-DWG-506. Non-welded area shall be sealed
with B elzona materials as per manufacture recomm endations. In absence of
Belzona seal ing. Proceeding seal ing w elding.
6 QA/ QC
Please refer to following documents:
a) Project Quality Plan 5638-E1-1500-QA-PRO-001.
b) Inspection And Test Plan For Storage Tank 5638-E1-1500-QA-ITP MEQ-001.
c) Approved construction drawing requirement shall be ensured.
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AGREEMENT NO. 10-5638-E-1
ABU DHABI
OIL REFINING COMPANY PROJECT PROCEDURE
METHOD STATEMENT FOR DOME
ROOF INSTALLATION
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7.9 During roof plate laying. All the workers working at height be adoned FBH duly
anchored chest straps with the carabiner of a rope grabber at very next to climbing
on the roof and check and confirm the robustness of the tie up points, rope grabbergrip and tightness of nuts of carabiners as formost activity. A rope grabber be
provided for each worker at roof. In no circumstance a rope grabber shall be used
for more than one worker.
7.10 During roof plate welding. All the workers working at height be adoned FBH duly
anchored chest straps with the carabiner of a Retractable Life Line at very next to
climbing on the roof and check and confirm the robustness of the tie up points,
retractable life line grip and tightness of nuts of carabiners as formost activity. A
rectractable life line be provided for each worker at roof. In no circumstance a rope
grabber shall be used for more than one worker.
7.11 All the welders shall cover the welding spot with fire blanket for minimum 10
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AGREEMENT NO. 10-5638-E-1
ABU DHABI
OIL REFINING COMPANY PROJECT PROCEDURE
METHOD STATEMENT FOR DOME
ROOF INSTALLATION
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3 minutes) incase of suspension of worker from height. A mobile scaffolding shall
be made available as a spare for rescue during emergency; and a knife with
scabbard and 18mm rope with a carbiner shall be kept on the rescue mobilescaffolding. A mobile scaffolding shall be moved to hold suspended victim
immediately. All the personnel working inside the tank will be trained on the rescue
methods.
7.16 3rdparty trained rescue team shall be made available at site and they will be act as
per the orders of ERTL (Emergency Response Team Leader) according to the
emergency situation.
7.17 Suspended persons shall not be laid down for 40 minutes and water shall not be
given to the victim immediately, depends upon the situations.
7.18 Heat Stress. Heat stress measures like water arrangement, job rotations, Flag
notifications shall be complied as per project procedures.
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Attachment 1 Welding Sequence Drawing