#Checklist List for Isometrics

 #Checklist List for Isometrics

•  Company Standard Title Block, Job Number, Drawing Files, numbers, and revisions
• Isometric North indicated
• All the symbols are used as per Legend
• Line Details (No. Spec. services, flow direction and Spec Break) as per P&ID
• Design Pressure, Design Temp, Test Pressure, Insulation Class, Insulation thickness and   Radiography is indicated as per line schedule
• Equipment number, nozzle no., nozzle orientation and elevation are as per piping layout
• BOM (piping and supports) checked with respect to piping, material specification
• If line is stress critical, stress analysis result is incorporated. Check in case of hot/cold line/stress critical large bore line
• End to end dimensions & end connection of in-line instruments, ESD valves, Strainers any special items & control valves are verified
• Extra-long bolts are considered for installation of Relief valve, Spectacle blinds, Wafer type valves, restriction orifice etc.
• High Point Vent and Low Point Drain
• Valves handles Orientation, ESD valve & control valve actuator orientation is shown on drg.
• Pipe Support welded attachments are shown
• Weld Points, Field welds and notes about dimensional verification at site are incorporated
• Client and IDC comment incorporated
• Open Vent/drain to safe location
• Upstream/downstream straight run of pipe and orientation of orifice tap for meter runs.
• Sloping lines, no pocket insured., slope line as per P&ID
• Flow pattern of 3-way controls or multi-port valves
• Line located from grid if not connected to equipment
• Indicate output symbol and elevation where pipe passes through wall
• Indicate Continuation on next isometric, logical split such that it is not at branch point/flange weld point or in pipe run
•  Branch connection and correctness of branch fittings
• Check for minimum spool based on pipe size
•  Eccentric reducer flat side and offset shown.
• Tie in point no if any 
• Proper Notes & Holds & Revision clouds if any manually
• Update isometric index before release indicating correct rev/hold