Coating and packing for pressure vessels transport
1 Scope
1.1 This document specifies the relevant requirements for surface treatment, coating and packing for pressure vessels and components transport.
1.2 The surface treatment, coating and packing for pressure vessels and components transport shall comply with the requirements of design documents and ordering technical conditions in addition to this document.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 146.1 Gauge for standard gauge railways—Part 1: Rolling stock gauge
GB 146.2 Gauge for standard gauge railways—Part 2: Structure gauge
GB/T 150.4 Pressure vessels—Part 4: Fabrication, inspection and testing, and acceptance
GB/T 191 Packaging—Pictorial marking for handling of goods
GB/T 197 General purpose metric screw threads—Tolerances
GB/T 2934 General-purpose flat pallets for through transit of goods—Principal dimensions and tolerances
GB/T 5048 Moisture-proof packaging
GB 6514 Safety code for painting—Safety, ventilation and air clean-up for painting process
GB/T 7284 Wooden framed case
GB/T 7350 Waterproof packaging
GB 7692 Safety code for painting—Safety, ventilation and air clean-up for pretreatment process of painting
GB/T 8923.1 Preparation of steel substrates before application of paints and related products—Visual assessment of surface cleanliness—Part 1: Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of previous coatings
GB/T 10610 Geometrical product specifications (GPS)—Surface texture: Profile method—Rules and procedures for the assessment of surface texture
GB/T 12464 Wooden boxes
GB/T 13144 Packaging containers—Cases with plybamboo
GB/T 16470 Palletized unit loads
GB/T 18924 Wirebound boxes
GB/T 18925 Skid wooden boxes
JT/T 385 General requirements of packaging for transport cargo by water and road
MH/T 1028 Contour and dimension of unit load device for air transportation
SH/T 3022 Design specification for anticorrosion coating of equipment and piping in petrochemical engineering
3 Surface treatment
3.1 Method for surface treatment
The methods for surface treatment of pressure vessels or components include grinding, derusting, polishing, pickling and passivation.
3.2 Conditions and timing for surface treatment
The surface treatment of vessels or components shall be carried out after the pressure test (leakage test or hot gas cycle test) and surface cleaning, and welding, heat treatment and other operations damaging the surface state shall not be carried out after surface treatment, otherwise, surface treatment shall be carried out again.
3.3 Grinding
3.3.1 The surface grinding of the vessel specified in GB/T 150.4 shall be completed before the pressure test. For the surface defects that affect the appearance and coating, such as uneven surface, scratches, grooves, etc., the grinding method shall be adopted to remove these defects and make a smooth transition, and the method of puttying shall not be adopted to replace grinding.
3.3.2 Appropriate grinding tools shall be selected according to the material of the repaired parts, and grinding tools made of different materials shall not be mixed.
3.4 Derusting
3.4.1 The outer surfaces of carbon steel and low alloy steel vessels or components, the inner surfaces that can be derusted and other surfaces to be coated shall be cleaned and derusted.
3.4.2 Rust removal can be carried out by manual and powered tools, blasting or ejecting. During rust removal, damage to the surface of vessels or components affecting product quality shall be prevented.
3.4.3 Before surface derusting, thick rust layer, visible grease and dirt shall be removed; after surface derusting, dust and debris shall be removed, and the residue inside the vessels or components shall be cleaned up.
3.4.4 The effect of derusting shall be evaluated according to the typical sample methods specified in GB/T 8923.1, and shall meet the coating requirements or the grade specified in the design documents (see Table 1).
Table 1 Grade of derusting
Foreword i
1 Scope
2 Normative references
3 Surface treatment
4 Coating
5 Packing for transport
6 Pictorial marking
NB/T 10558-2021, NB 10558-2021, NBT 10558-2021, NB/T10558-2021, NB/T 10558, NB/T10558, NB10558-2021, NB 10558, NB10558, NBT10558-2021, NBT 10558, NBT10558
Introduction of NB/T 10558-2021
Coating and packing for pressure vessels transport
1 Scope
1.1 This document specifies the relevant requirements for surface treatment, coating and packing for pressure vessels and components transport.
1.2 The surface treatment, coating and packing for pressure vessels and components transport shall comply with the requirements of design documents and ordering technical conditions in addition to this document.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 146.1 Gauge for standard gauge railways—Part 1: Rolling stock gauge
GB 146.2 Gauge for standard gauge railways—Part 2: Structure gauge
GB/T 150.4 Pressure vessels—Part 4: Fabrication, inspection and testing, and acceptance
GB/T 191 Packaging—Pictorial marking for handling of goods
GB/T 197 General purpose metric screw threads—Tolerances
GB/T 2934 General-purpose flat pallets for through transit of goods—Principal dimensions and tolerances
GB/T 5048 Moisture-proof packaging
GB 6514 Safety code for painting—Safety, ventilation and air clean-up for painting process
GB/T 7284 Wooden framed case
GB/T 7350 Waterproof packaging
GB 7692 Safety code for painting—Safety, ventilation and air clean-up for pretreatment process of painting
GB/T 8923.1 Preparation of steel substrates before application of paints and related products—Visual assessment of surface cleanliness—Part 1: Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of previous coatings
GB/T 10610 Geometrical product specifications (GPS)—Surface texture: Profile method—Rules and procedures for the assessment of surface texture
GB/T 12464 Wooden boxes
GB/T 13144 Packaging containers—Cases with plybamboo
GB/T 16470 Palletized unit loads
GB/T 18924 Wirebound boxes
GB/T 18925 Skid wooden boxes
JT/T 385 General requirements of packaging for transport cargo by water and road
MH/T 1028 Contour and dimension of unit load device for air transportation
SH/T 3022 Design specification for anticorrosion coating of equipment and piping in petrochemical engineering
3 Surface treatment
3.1 Method for surface treatment
The methods for surface treatment of pressure vessels or components include grinding, derusting, polishing, pickling and passivation.
3.2 Conditions and timing for surface treatment
The surface treatment of vessels or components shall be carried out after the pressure test (leakage test or hot gas cycle test) and surface cleaning, and welding, heat treatment and other operations damaging the surface state shall not be carried out after surface treatment, otherwise, surface treatment shall be carried out again.
3.3 Grinding
3.3.1 The surface grinding of the vessel specified in GB/T 150.4 shall be completed before the pressure test. For the surface defects that affect the appearance and coating, such as uneven surface, scratches, grooves, etc., the grinding method shall be adopted to remove these defects and make a smooth transition, and the method of puttying shall not be adopted to replace grinding.
3.3.2 Appropriate grinding tools shall be selected according to the material of the repaired parts, and grinding tools made of different materials shall not be mixed.
3.4 Derusting
3.4.1 The outer surfaces of carbon steel and low alloy steel vessels or components, the inner surfaces that can be derusted and other surfaces to be coated shall be cleaned and derusted.
3.4.2 Rust removal can be carried out by manual and powered tools, blasting or ejecting. During rust removal, damage to the surface of vessels or components affecting product quality shall be prevented.
3.4.3 Before surface derusting, thick rust layer, visible grease and dirt shall be removed; after surface derusting, dust and debris shall be removed, and the residue inside the vessels or components shall be cleaned up.
3.4.4 The effect of derusting shall be evaluated according to the typical sample methods specified in GB/T 8923.1, and shall meet the coating requirements or the grade specified in the design documents (see Table 1).
Table 1 Grade of derusting
Contents of NB/T 10558-2021
Foreword i
1 Scope
2 Normative references
3 Surface treatment
4 Coating
5 Packing for transport
6 Pictorial marking
