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    Painting

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    Defrimaulana Baihaqi
    1. The document provides specifications for painting the interior of Penstock No. 1, including surface preparation, primer, and two coal tar epoxy coating steps. 2. The surface must be blast cleaned to ISO 8501-1 Sa 2 1/2 or higher standard. An inorganic zinc primer is applied by airless spray in the shop with a minimum drying time of 4 hours. 3. In the field, oil and grease are removed from the surface by cleaning with mineral solvent. Two coats of coal tar epoxy are applied by airless spray with minimum drying times of 7 hours between coats to reach a total dry film thickness of 400 microns. Repair

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    Painting

    Uploaded by

    Defrimaulana Baihaqi
    35 views1 page
    1. The document provides specifications for painting the interior of Penstock No. 1, including surface preparation, primer, and two coal tar epoxy coating steps. 2. The surface must be blast cleaned to ISO 8501-1 Sa 2 1/2 or higher standard. An inorganic zinc primer is applied by airless spray in the shop with a minimum drying time of 4 hours. 3. In the field, oil and grease are removed from the surface by cleaning with mineral solvent. Two coats of coal tar epoxy are applied by airless spray with minimum drying times of 7 hours between coats to reach a total dry film thickness of 400 microns. Repair

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    1. The document provides specifications for painting the interior of Penstock No. 1, including surface preparation, primer, and two coal tar epoxy coating steps. 2. The surface must be blast cleaned to ISO 8501-1 Sa 2 1/2 or higher standard. An inorganic zinc primer is applied by airless spray in the shop with a minimum drying time of 4 hours. 3. In the field, oil and grease are removed from the surface by cleaning with mineral solvent. Two coats of coal tar epoxy are applied by airless spray with minimum drying times of 7 hours between coats to reach a total dry film thickness of 400 microns. Repair

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    35 views1 page

    Painting

    Uploaded by

    Defrimaulana Baihaqi
    1. The document provides specifications for painting the interior of Penstock No. 1, including surface preparation, primer, and two coal tar epoxy coating steps. 2. The surface must be blast cleaned to ISO 8501-1 Sa 2 1/2 or higher standard. An inorganic zinc primer is applied by airless spray in the shop with a minimum drying time of 4 hours. 3. In the field, oil and grease are removed from the surface by cleaning with mineral solvent. Two coats of coal tar epoxy are applied by airless spray with minimum drying times of 7 hours between coats to reach a total dry film thickness of 400 microns. Repair

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 1

    Draft of Rev.

    08

    1. No.1 Steel Penstock


    A. [SPECIFICATION No.1] (Inside of No.1 Penstock for horizontal position and steel lining)

    Spreading Rate Minimum


    Coating
    including Loss Dry Film
    Process Product Name Paint Name Color Coating Method Interval Thinner
    Factor of 35% Thickness
    (L/m2) (at 23°C)
    (microns)
    Work Shop
    Surface
    Blast Cleaning to ISO 8501-1 Sa 2 ½ or Sa 2 ½ of SIS 055900 or SSPC-SP10. 2 hrs.
    Preparation
    Thinner
    Primer ( at field shop) Hempel’s Galvosil 15780 Inorganic Zinc Grey Airless Spray 0.19 90 Min 4 hrs.
    08700
    Erection Site Secondary
    All oil, paraffin, grease and dirt will be removed from the surfaces to be painted, by wiping the surfaces with a clean
    Surface
    cloth dipped in mineral solvent.
    Preparation
    Thinner
    1stCoat Hempadur 15130 Coal Tar Epoxy Black Airless spray 0.35 160 Min 7 hrs.
    08450
    Thinner
    2ndCoat Hempadur 15130 Coal Tar Epoxy Black Airless spray 0.33 150 Min 7 hrs.
    08450
    Total Dry Film Thickness min. 400
    - Airless spray repair coat will be applied for field paint.
    Repair Coats - This painting method shall be applied for repair coat of grout holes, spider lugs and field welding joint. After 24 hrs.

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