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NBT47003.1-2009

Chinese Standard: 'NBT47003.1-2009'
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NB/T 47003.1-2009English295 Add to Cart 0--15 minutes. Auto immediate delivery. Steel welded atmospheric pressure vessels [Quasi-Official / Academic version - scanned PDF, translated by Standard Committee / Research Institute in China] Valid NB/T 47003.1-2009
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ICS 23.020.10
PROFESSIONAL STANDARD NB
OF THE PEOPLE'S REPUBLIC OF CHINA
J74
NB/T 47003.1-2009 (JB/T 4735.1)
Partially Replace JB/T 4735-1997
Steel Welded Atmospheric Pressure Vessels
ISSUED ON. DECEMBER 1, 2009
IMPLEMENTED ON. MAY 1, 2010
Issued by National Energy Administration
Contents
1 Scope ... ... ... ... ... ... .. ... ... ... .. ... ... ... ... ... ... ... ... ... .. ... .. 1
2 Normative References ... ... ... ... ... ... .. ... ... ... ... ... ... ... ... ... ... ... .. 1
3 Terms and Definitions ... .. ... .. ... ... ... .. ... .. ... .. ... ... ... .. ... .. ... .. 5
4 General Provisions ... ... ... ... ... .. ... ... .. ... . 6
5 Materials ... .. ... ... .. ... .. ... .. ... ... .. .. ... ... .. ... ... .. ... ... .. ... .. .. .. .. ... .. ... 13
6 Basic Structural Components ... .. .. .. ... .. .. ... ... ... 24
7 Vertical Cylindrical Vessels .. ... ... ... ... ... ... ... ... ... . 54
8 Rectangular Vessels ... .. ... ... .. ... .. ... ... ... ... .. ... ... ... .. ... ... .. .. 72
9 Manufacturing, Inspection and Acceptance ... .. ... . ... .. ... ... 93
Appendix A (Informative) Steels Performances at Different Temperatures ... 106
Foreword
NB/T 4 7003 consists of 2 parts.
--Part 1. Steel Welded Atmospheric Pressure Vessels;
--Pa11 2. Silos for Solid Materials .
This part is Pa11 l ofNB/T 47003.
There are significant differences between this Pait and JB/T 4 73 5-1997 as follows .
--After the safety coefficients of carbon steel, low alloy steel and ferritic high alloy
steel are revised, the safety coefficient of the lower limit value of the steel standard tensile
strength is reduced from 2.5 to 2.4;
--As for Chapter 4, definitions for the minimum thickness and calculated thickness
are revised; pneumatic test is added into the pressure test (test pressure is changed from 1.15
time to 1.10 time); the stress check in the pressure test is revised;
--As for Chapter 5, according to the changes of the steel standards, the steel grade,
grade of steel for the stud and nut, allowable stress of the section steel and welding materials
shall be increased correspondingly;
-Chapter 5 of the previous standard "internal pressure cylinder", Chapter 6 "external
pressure cylinder and external pressure sphere", Chapter 7 "head", Chapter 8 "flat cover",
Chapter 9 "opening and opening reinforcement" and Chapter 10 "flange" are combined to
form Chapter 6 of this Part "basic structural components";
--As for Chapter 6 "basic structural components", some formulae in "flat cover",
"opening and opening reinforcement" and "flange" are revised; the scope and diameter of
the opening are extended;
--As for Chapter 7 "ve11ical cylindrical vessel", some formulae are revised;
--As for Chapter 8 "rectangular vessel", some formulae are revised;
--As for Chapter 9, rectangular vessel, pneumatic test and methods are added. The
medium temperature in the pneumatic test shall be revised to "no less than 5 °C";
--The following contents of the previous standard are deleted including Chapter 12
"Vertical cylindrical tank", Chapter 14 "Cylindrical silos", Appendix A "Additional regulations
for the materials'', Appendix C "Aseismic design of the vertical cylindrical tank", Appendix
D "Design of the ribbed vault'', Appendix E "Basic requirements for the foundation design
of the vertical cylindrical tank' ', Appendix F "Preparation and inspection of the storage tank
tee joints and welded comer joints'', Appendix G "Detailed drawing of structural nodes" as
well as Appendix H "Opening and opening reinforcement of flush cleaning openings".
Appendix A of this Pa11 is informative.
This Part is proposed and under the jurisdiction of National Technical Committee on
Steel Welded Atmospheric Pressure Vessels
1 Scope
1.1 This Part specifies the design, manufacture, inspection and acceptance requirements of
steel welded atmospheric pressure vessels (hereinafter referred to as vessels).
Atmospheric pressure horizontal vessel can be designed and calculated according to the
relevant requirements of "Steel · Horizontal Vessels on Saddle Suppo11s" JB/T 4 731 and its
allowable stress values may be adopted according to 4.6 of this Pa11.
1.2 Vessels applicable to this part.
a) Cylindrical vessel . design pressure is between -0.02MPa and O. lMPa; design
temperature shall be determined according to the allowable service temperature of the steels;
b) Rectangular vessel. design pressure is zero; design temperature shall be dete1mined
accordi......
Related standard:   NB/T 47003.2-2009  NB/T 47017-2011
   
 
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