1. Purpose

          To use a tank for other purpose after cleaning or to prepare for maintenance or safety check
            for further use of the tank

        2. Application(An example of a naphtha oil tank)

           Cleaning a naphtha oil storage still in use.

        3. Guideline

            Concerning the quality of cleaning work, cleaning should be processed according to proper
            procedures.

        4. Responsibility

           A. Source of Order
              1) Manager of Construction
                 A manager of construction is responsible supervise operation whether
                 it is processed properly according to CUSTOMER technical  standard and process
                 note.

              2) Manager of Operation
                 A manager of operation is responsible to supervise an operation whether it processed
                 properly according to CUSTOMER technical  standard and process note.

              3) Manager of Quality Control Department
                  A manager of quality control department is responsible to supervise an
                  operation whether it processed properly according to CUSTOMER technical standard
                  and process note.

     

            B. Operation Company
               1) Field Manager
                   Field manager is responsible for general operation work

               2) Manager of Operation
                   Manager of Operation is responsible to manage operation following process depending
                   the drawing and fild status after discussing with CUSTOMER operation department

                3) Manager of Quality Control Department
                   Manager of Quality Control Department is responsible to check the general operation
                   and building materials and report to CUSTOMER quality control department manager
                   department manager.

     

    5. Definition

            No application               

    6. Reference

           A. Standard note about Machinery Operation

            B. Planning note about Quality Guarantee

            C. Other related specifications and technical note  

    7. Procedure

    TEMPORARY SYSTEM
     INSTALLATION

    |

    NAPHTHA   DISCHARGE

    |

    TANK N2 PURGE
    (
    if necessary)

    |

    LINE EMPTY

    |

    LINE CLEANING

    |

    AIR BLOWING

    |

    Bottom Oil ELIMINATION

    |

    INSTALLING A TEMPORARY WORKBENCH IN THE TANK

    |

    TANK SHELL JET CLEANING
    (if necessary)

    |

    TANK SHELL CHEMICAL
    CLEANING

    |

    AIR PURGE & BLOWING

    |

    TANK BOTTOM
    WASTE DISCHARGE

    |

    TANK BOTTOM
    CLEANING

    |

    INSPECTION

    |

    DISMANTLING THE TEMPORARY WORKBENCH IN THE TANK

    |

    PURGE & BLOWING