Verify revision number, purpose of revisions, numbering, title. Verify revision record sheet/ change summary sheet (If any) Scope Applicable Codes and Standards Acronyms and Abbreviations Reference Specifications Material requirement / General Notes What mill test cert. must be provided? Carbon Equipvalent NACE MR-01-75/ISO requirement Stainless Steel requirement ? Duplex Stainless Steel requirement ? GRE Piping Requirement (If any) The piping material line class designators which defines how the line class or specification are structured
15
Branch Chart which will define what type of branch connection to use for each header-branch size combination
16 17 18 19 20 21
Are there any note in the Branch chart Process Flow Summary Customer Specification Specific material selection where appropriate Design limitations for candidate materials Corrosion and material selection evaluations
NGUYỄN ANH TÙNG- PIPING TEAM
ENGINEERING DEPARTMENT
OK
Not OK
Not Required
Page 1 of 6
PIPING CLASS SPECIFICATION CHECKLIST 22
Line class Index which lists all the line classes currently being used on the project along with a brief summary
Are there any remark in the line class index ? Pipe Class Datasheet Class Design Code Rating and Facing Material Corrosion Allowance Service Pressure/ Temperature limit Do it conform to Pipe Class Index? Pipe (Refer to Appendix 1: Material Selection Diagram) Which standard? Size range of Pipe Schedule of each pipe size (Pipe wall thickness) Has the wall thickness be calculated in accordance with the applicable ASME B31 Code ?
25.4 25.5 25.6 25.7
Do the wall thickness conform to Wall thickness calculation report ? Ends of pipe (PE – BE) for each pipe size Material specification for each pipe size Welded pipe shall not be substituted for seamless pipe. Seamless pipe may be substituted for welded pipe in all services, sizes and materials.
26.1 Which standard? 26.2 Size range of socket weld fittings 26.3 Material specification for socketweld fittings NGUYỄN ANH TÙNG- PIPING TEAM
Page 2 of 6
PIPING CLASS SPECIFICATION CHECKLIST
ENGINEERING DEPARTMENT
Butt Weld Fittings (Cap/Elbow/Tee/Weldolet/Reducer…) Which standard? Size range of Butt Weld fittings Material specification for buttweld fittings Welded fittings shall not be substituted for seamless fittings. Seamless fittings may be substituted for welded fittings in all services, sizes and materials. 27.5 Buttweld fittings shall have a wall thickness to match the wall thickness of the adjoining pipe 27 27.1 27.2 27.3 27.4
Are Long radius elbows required for all buttweld elbows ? Flange Which standard? Size range of Socketweld Flange Size range of Weldneck flange Flange surface finish ? Does the bore of the weldneck flange match to pipe ? Orifice flanges shall be ordered in pairs The minimum class of Orifice Flange shall be 300# Spectacle Blind / Spade / Spacer Which Standard ? Size range of Spectacle Blind / Spade / Spacer Do the material of pipe/ fittings/ Flange.. in the Piping Class Specification comply with basic material chart? (Refer to Appendix 2:Basic Material)
31 31.1 31.2 31.3 32
Gasket Which standard ? Gasket material Do it conform to Opterating condition ? Stud Bolts & Nuts
Do the material of Bolts & Nuts comply with the material of Flange ? Do Bolts & Nuts comply with Specification for Protective coating ? Valves Valve Tag Description Class Identifier Valve Type End Connection Additional Valve Design Features Size of valve Do it conform to Manual Valve Specification ? Notes Are all the Notes clear and understandable?
