SPECIFICATIONFORDETAILDESIGNOFEQUIPMENT

SPECIFICATION FOR DETAIL DESIGN OF EQUIPMENT 1 Code standards and specification GB150 1998 Steel pressure vessels GB151 1999 Tubular heat exchangers Supervision regulation on safety technology for pressure vessel issued by China state bureau of quality and technical supervision in 1999 HG20688 2000 Specification on content and procedure of preliminary design file for chemical plant GB5044 1985 Classification for toxicity of occupational touch poison HG20660 2000 Classification for toxicity and explosiveness of chemical substances in pressure vessels JB T4708 2000 Welding procedure qualification of steel pressure vessels JB T4709 2000 Welding procedure specification of steel pressure vessels JB T4711 2003 Coating and packing for pressure vessels transport JB4726 2000 Carbon and low alloy steel forgings for pressure vessels JB4728 2000 Stainless steel forgings for pressure vessels JB T4730 2005 Nondestructive testing of pressure vessels JB T4735 1997 Steel welded atmospheric pressure vessels HG T20569 1994 Mechanical mixing equipment HG20580 1998 Specification for design base of steel chemical vessels HG20581 1998 Specification for materials selected of steel chemical vessels HG20582 1998 Specification for stress calculation of steel chemical vessels HG20583 1998 Specification for structural design of steel chemical vessels HG20584 1998 Technical requirements for fabrication of steel chemical vessels HG T2806 1999 Instruction for fabrication and management of austenitic stainless steel pressure vessels GB12459 1990 Steel butt welding seamless pipe fittings JB T4712 92 Saddle support JB T4713 92 Leg support JB T4725 92 Ear lug support JB T4746 2002 Formed heads for steel pressure vessels JB T4736 2002 Reinforcing pad HG T21574 94 Lifting lug of equipment JB T4700 4707 2000 Flanges for pressure vessels HG21594 21604 1999 Manholes and handholes from stainless steel HG20592 HG20614 1997 Steel pipe flanges gaskets fasteners select A series English in Europe series Flange type nominal pressure nominal diameter in list shall be market by this standard GB16479 1997 Bellows expansion joints for pressure vessels If there has conflict with above standard comply with the stringent one 2 Principle for design parameter 2 1 Equipment design pressure shall be selected as per data sheet If it doesn t mention follow the relevant specification in HG20580 1998 2 2 Equipment design temperature shall be selected as per data sheet If it doesn t mention follow the relevant specification in HG20580 1998 2 3 Equipment design load Follow the relevant specification in GB or HG standard 2 4 Corrosion allowance Corrosion allowance of the material shall be selected as per data sheet 2 5 Vessel category Vessel category shall be according to Supervision regular for safety and technique of pressure vessel issued by national quality technique supervision bureau in 1999 Herein medium property shall be according to HG20660 2000 Classification for explosion danger and poison degree of chemical medium in pressure vessel 3 Material 3 1 All material of nonstandard equipment in this project shall be selected as per data sheet 3 2 Material of all parts touched process medium and welded with equipment body shall be the same as the material of equipment shell 3 3 Heat exchanger tubes of tubular heat exchanger select seamless tube with high or higher precision degree The material of heat exchanger shall be according to the following standard GB13296 1991 seamless steel pipe for boiler and heat exchanger GB T8163 1999 seamless steel pipe for liquid transmission 4 Technical requirement for equipment structure 4 1 All bolt hole on the connection flange shall be straddle arranged 4 2 All spare nozzles shall be assembled with blindflange bolt nut and gasket 4 3 Nozzle stand out length comply with data sheet If there hasn t other requirement comply with 5 3 3 paragraph in HG20583 1998 4 4 Equipment man hand hole shall set up by data sheet Unless other requirement man hole on equipment top shall be horizontal davit cover type Manhole on equipment side shall be vertical davit cover type 4 5 At lest one earth lug shall be installed on each equipment The height of installation is 120mm from bottom of baseplate to centerline of earth lug Material should be used 0Cr18Ni9 4 6 Heat exchanger a Tube bundle in heat exchanger shall be class I And mark it in technical data sheet b Connection between heat exchange tube and tube sheet shall be strength welding and expanded Connection between tube sheet and shell shall be penetration welding by argon arc welding render Nondestructive inspection shall be done on surface of welding joint 5 Other requirement 5 1 The strength rigid and stability of all pressure parts should be calculated as per relative standard 5 2 Penetration welding process must be used for all butt welding joints All welding joints must be consecutive and no slag and air hole 5 3 All normal vessels that their medium is deadliness and high danger shall refer GB150 to design manufacture and inspect Penetration welding process must be used for all butt welding joints And 100 Nondestructive inspect shall be used and satisfied RT III 5 4 Leaking testing must be set up for the vessels that their process medium is deadliness and high danger or flammable and explosive 5 5 All seams of inside surface shall be ground smooth 5 6 After manufactured the interior surface must be polished including baffle and bolt nut 5 7 After manufactured the equipment made of stainless steel by should be cleaned remov