1 General Provisions
1.0.1 This code is formulated to unify the construction quality acceptance requirements of non-metallic piping engineering in petrochemical engineering to guarantee the construction quality.
1.0.2 This code is applicable to the construction quality acceptance requirements of non-metallic piping engineering in petrochemical engineering as fiber reinforce plastic (FRP) pipes, plastic tubes, PSP pipes and steel skeleton of polyethylene plastic composite pipes, etc.
1.0.3 The construction of non-metallic piping engineering in petrochemical engineering shall meet with the design document. Nothing shall be revised unless the change request is confirmed by design.
1.0.4 In addition to this code, the relevant state laws, administrative regulations and rules shall also be abided by for the construction quality acceptance of non-metallic piping engineering in petrochemical engineering.
2 Terms
2.0.1 Butt-and-wrapped joint
abut connector end face with multi-layers of rein-impregnated reinforcing fiber fabric upper as one connector
2.0.2 Heat fusion joint
use special tool heating connection part, forming a joint by pressure fusion when it's melted
2.0.3 Electrofusion joint
insert the tube or pipe connection parts into the special electrofusion fitting of embedded resistance wire, forming a joint by heating fusion by electricity
2.0.4 Hot gas welded joint
with hot air or hot inert gas heating the connection surface, and then pressing the two surfaces together and adding filler materials to achieve fusion form joint in this way
3 Acceptance, Storage and Handling of Piping Components
3.1 General Requirements
3.1.1 Piping components shall have quality certificate, of which the performance data shall be in accordance with the requirements of the current relevant standard of the nation and design document.
3.1.2 If any of the following circumstances occurs, no piping components shall be used until the dispute is settled:
1 The performance data in quality certificate cannot meet with the relevant product standards and ordering specifications;
2 Disputes exist over the performance data in quality certificate;
3 The material identification is not in conformity with that in the quality certificate;
4 The material requested to be re-checked fails the re-inspection.
3.1.3 The identification on piping components shall keep clear and complete during the storage and handling.
3.2 Acceptance
3.2.1 The substance identification shall be in conformity with the product quality certificate.
3.2.2 The pipe and fitting quality certificates shall include the following content:
1 Manufacturer and production date;
2 Product name, standards, specification and materials;
3 Relevant testing data as specified in the product standards;
4 Other test reports as requested in contract;
5 Inspector's signature and inspection date;
6 Official stamp of the manufacturer quality inspection department.
3.2.3 The identification of pipes and fittings shall include the following content:
1 Product name;
2 Product type;
3 Product standard number;
4 Others as required in the product standard;
5 Production date;
6 Manufacturer or trademark.
3.2.4 Surface inspection shall be performed on piping components one by one. The internal and external wall of pipes and fittings shall be smooth and free of bubbles, crack, nick, depression, delamination, impurity, color uneven and discoloration decomposition.
3.2.5 The surface scar depth shall not exceed 10% of pipe wall thickness, neither larger than 0.5mm of plastic and steel skeleton of polyethylene plastic composite pipes, while there shall be no surface scar on FRP and FRP-plastic composite pipes.
3.2.6 No steel wire shall be exposed on the surface of steel skeleton of polyethylene plastic composite pipes, or no cracks or stripping of the seal ring would be allowed.
3.2.7 Fibers of FRP products shall be soaked by resin and free of exposure. No defections such as scratch, delamination, stripping, resin bump, inclusion and obvious color uneven that affect the quality would be allowed.
3.2.8 Glass fiber reinforced plastic layer shall be adhered as a whole with plastic tube and shall be free of crack and disbonding.
3.2.9 Flange sealing surface should be smooth and clean, be free of bending, and there shall be no defects such as radial scratch.
3.2.10 Sample size inspection of the piping components (manufacturers, materials, specifications, and arrival time as the same) shall be performed per as 5% of a patch and which shall be no less than one whole piece. Geometry and deviation shall meet the current related national products provisions.
3.2.11 If failures occur during the sample inspection, spot checks shall be performed with double the original numbers; if unqualified, that batch of the pipeline components shall not be accepted and proper identification and isolation shall be done.
3.2.12 Visual inspection of the valve shall be done one by one to ensure there is no quality defect as crack, bubble, and nick, etc.
3.2.13 Valves which have special requirements shall be in accordance with the current industry standard SH 3518 "Valve Inspection and Management Procedures".
3.2.14 Valve pressure test and sealing test shall comply with the following requirements:
1 Valve body test pressure shall be 1.5 times of the nominal pressure and test time shall not be less than 5 minutes, taking no leakage of the valve body and fillers as eligibility criteria; Seal test shall be carried out to valve nominal pressure and taking no leakage of the valve sealing surface as eligibility criteria.
Foreword I
1 General Provisions
2 Terms
3 Acceptance, Storage and Handling of Piping Components
4 Fabrication of Piping
5 Erection
6 Assembly
7 Examination of Piping Joints
8 Piping System Test
9 Piping System Purging and Cleaning Inspection
10 Technical Documentation of Construction Completion
Explanation of Wording in this Code
List of Quoted Standards
