1 Scope
This standard covers the requirements on design, manufacturing, test and acceptance inspection of steel horizontal vessels (hereafter called horizontal vessel).
This standard is applicable to the horizontal vessel with the designed pressure no more than 35MPa and supported by two symmetric saddle pedestals under even load.
This standard is not applicable to the following horizontal vessels:
a) The horizontal vessels heated directly by flame or under nuclear radiation;
b) The horizontal vessels handled frequently;
c) The horizontal vessels to which fatigue analysis is required;
d) The horizontal vessels with clamping cover.
2 Referenced Regulatory Documents
The clauses of the following standards become a part of this standard through being referenced. For all the reference indicated with the date, all their afterwards amendments (excluding amendment on text error) or revisions shall not be effective to this standard. However, the parties reaching agreement based on this standard are encouraged to study whether the latest versions of such documents are adoptable. For all the reference without being indicated with the date, their newest versions shall be effective to this standard.
GB 150 Steel Pressure Vessel
GB/T 700-1988 Carbon Structural Steel
GB/T 1804-2000 Ordinary Tolerance and Tolerance without the Indication of Its Linearity or Angle or Size
GB/T 1591-1994 Low-Alloy High-Strength Structural Steel
GB 50017-2003 Regulation for Design of Structural Steel
JB/T 4712 Saddle Pedestal
JB 4733-1996 Explosion Stainless Steel Composite Steel Plate for Pressure Vessel
JB/T 4735-1997 Wielded Ordinary-Pressure Steel Vessel
Regulation for Technical Supervision on Pressure Vessel Safety (Issued by the former National Administration of Quality and Technical Supervision in 1999)
3 Terminology and Definition
The following terminology and definitions are applicable to this standard.
3.1 Pressure
Unless otherwise indicated, pressure refers to gauge pressure.
3.2 Operating pressure
Operating pressure refers to the possible maximum pressure on top of horizontal vessel under normal operating conditions.
3.3 Design pressure
