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Petrochina(Halfaya)
HALFAYA PROJECT SURFACE FACILITY
Additional Tanks for CPF1
IMCO
DETAIL DESIGN DOC.NO.: HFY2-E1549-CPF1TA-GEN-PD-0010 REV.: A
PAGE 2 OF 4
Content
1.0 Purpose3
2.0 Introduct ion.3
3.0Scope and Regulation3
4.0 Methodology3
5.0 Work Details4
Attachments:
TECHNICAL Data & Certi ficates of paints
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Petrochina(Halfaya)
HALFAYA PROJECT SURFACE FACILITY
Additional Tanks for CPF1
IMCO
DETAIL DESIGN DOC.NO.: HFY2-E1549-CPF1TA-GEN-PD-0010 REV.: A
PAGE 3 OF 4
1.0 Purpose:
The purpose of this statement is to explain the Surface
Preparations and Paintingmethod for internal and external Coating
of 30000 m3 Tank in halfaya oil field.
2.0 Introduct ion:
This method statement sets out the IMCO procedures to be adopted
and followedduring the Sand Blasting & Painting of the 12130
TAG.
3.0 Scope and Regulation:
Internal and External Painting for tank and Equipment will be
done based on the latestEdition of the Followed SPEC.
Doc.No.HFY2-E1550-CPF1TB-CP-SPC-0004 Rev.: A
Doc.No:HFY2-E1550-CPF1TB-CP-SPC-0005 Rev.:1
4.0 Methodology:
4.1 Works Authorization Procedure:
Prior to commencing works the relevant certificate should be
obtained in accordancewith PCH Works Authorization Procedure as
necessary.
4.2 Materials :
All Materials will be delivered to the jobsite in sealed and
labeled containers and shall bestored in a location that is
protected from the elements, well ventilated and free fromexcessive
heat, open flame, or other sources of ignition.
4.3 Coating System :
Coating systems and type of paints will be prepared based on the
Representations SPCby OWNER.
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Petrochina(Halfaya)
HALFAYA PROJECT SURFACE FACILITY
Additional Tanks for CPF1
IMCO
DETAIL DESIGN DOC.NO.: HFY2-E1549-CPF1TA-GEN-PD-0010 REV.: A
PAGE 4 OF 4
4.4 Coating f ilm Thickness:
Coating film Thickness for each layer wil l be done based on
tables that presented inSPC-0004 & SPC-0005
5.0 Work Details:
5.1 Sequence of Preparation and coating:
The preparation and first coating of internal and external
surface of shell and roof andother attachments that connected to
tank will be done before installation and welding.
5.2 Surface preparations:
The steel surface will be cleaned by either slag abrasive or
abrasives suitable.Preparation grade shall be reach to Sa 2.5
The profile depth of the abrasive blast cleaned surface shall
not be less than 40 orgreater than 75 micrometers.
5.3 More Painting:
The intermediate and top coating will be done after the
completion of the installation andwelding of tank and Hydrostatic
test.
5.4 Painting / Coating Repair:
After completion of hydrostatic test and before starting
intermediate and top coating anyspots that required repair and
maintenance in area of damage, will be done.
The coating materials used for repair and maintenance shall be
the same as the originalmaterials.
The surface preparation method for repairing will depend upon
the size of areas to becoated and the repair coating materials
required.
The order for surface preparation shall be:
- Dry-blast.
- Power tool cleaning.- Hand tool cleaning.
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