The standard specifies safety requirements in material, design, manufacturing, inspection, test and safety accessories of stationary boiler pressure parts and related load-bearing non- pressure parts.
The standard is applicable to following boiler body and pipeline in boiler;
a) Steam boiler which rated pressure is larger than atmospheric pressure
b) Hot water boiler which rating thermal capacity is not less than 0.1 MW and the rated pressure is not less than 0.1 MPa
For steam boiler, the rated pressure is rating steam pressure, and for hot water boiler, the rated pressure is rating water-out pressure.
Stationary boilers specified in the standard include fuels burnt thermal boiler and radiant heat gas flue exhaust-heat boiler.
Load-bearing non-pressure parts related with pressure parts include load-bearing parts for hanging and supporting pressure parts, and load-bearing parts welded on pressure parts.
Foreword
Introduction
1. Scope
2. Normative Reference
3. Symbols
4. Material
4.1Basic requirements basic requirements
4.2 Selection Principle
4.3 Plates
4.4 Tubes and Pipes
4.5 Forging shall be selected in accordance with provisions in Table 4-3.
4.6 Casting
4.7 Fastener
4.8 Bearing Parts
4.9 Welding Material
4.10 Material Substitution
4.11 Operating Requirements of Material Manufactured according to Abroad Standards
4.12 Examination and Approval for New Materials
5. Design
5.1 Basic Requirements
5.2 Design Pressure and Gauge Pressure
5.3 Calculated Temperature
5.4 Calculated Loading
5.5 Allowable Stress
5.6 Weld Joint Factor
5.7 Cylindrical Internal Pressure Parts
5.8 Convex Capped End
5.9 End Cover
5.10 Hole and Ligament Reinforcing
5.11 Bearing Parts for Hanging and Supporting Pressure Parts
5.12 Tubing and Tubing Accessory
5.13 Inspection Hole
6 Welding
6.1 Overview
6.2 Welding Evaluating
6.3 Joint Design
6.4 Welding Seam Position
6.5 Base Metal Preparation
6.6 Welding Conditions
6.7 Assembly
6.8 Pipe and Tubing
6.9 Welding
6.10 Preheating
6.11 Postweld Heat Treatment
6.12 Testing Item
6.13 Test Piece
6.14 Acceptance Criterion
6.15 Rewelding and Repairing Welding
7. Other Manufacturing Method
7.1Material Laying-off
7.2 Stamping
7.3 Plate Rolling
7.4 Pipe Bending
7.5 Expanded Joint
7.6 Manufacture Requirements for Main Pressure Parts
8. Safety Accessories
8.1 Overview
8.2 Mode and Quantity of Safety Valve
8.3 Structure and Material of Safety Valve
8.4 Discharge Capacity of Safety Valve
8.5 Safety Valve Performance Requirement
8.6 Testing and Installation for Safety Valve
8.7 Mode and Quantity of Water Level Indicator
8.8 Structure and Material of Water Level Indicator
8.9 Water Level Indicator Installation
8.10 Pressure Gauge
8.11 Temperature Measurement
8.12 Protective Devices
9. Inspection and Test
9.1 Overview
9.2 Welding Joint Appearance Test
9.3 Nondestructive Testing for Welding Joint
9.4 Radiographic Inspection for Welding Joint
9.5 Ultrasonic Crack Detection for Welding Joint
9.6 Welding Joint Oil Whiting Test
9.7 Magnetic Particle Inspection for Welding Joint
9.8 Mechanical Testing for Welding Joint
9.9 Welding Joint Metallurgical Phase and Fracture Testing
9.10 Hydraulic Testing
9.11 Through-ball Test
9.12 Forging
9.13 Casting
9.14 Nameplate
9.15 Documents used for inspection
10 Water tube boilers
10.1 Generalization
10.2 Strength
10.3 Connection of tube or pipe head and cylinder or end socket
10.4 Temperature condition of heating surface
10.5 Thermal expansion
10.6 Thermal expansion for piping system
11 Shell boilers
11.1 Generalization
11.2 Pressure parts of cylindrical intrinsic pressure
11.3 Ellipsoidal spheroidal components
11.4 Convex tube plate
11.5 Slab and tube plate with tension brace (reinforce)
11.6 Tension brace and reinforced pieces
11.7 Pressure parts bearing external pressure
11.8 Foot ring
11.9 Open hole
11.10 Door opening
Appendix A
