1 Scope
1.1 This specification specifies the requirements and quality criteria for the construction of piping works for watersupply and drainage with design pressure less than or equal to 1.6MPa.
1.2 This specification is applicable to the construction and acceptance of buried and overground pipeline for watersupply and drainage of newly-built, renovated and extended works in petrochemical industry engineering construction. Renovation, overhaul and other works may refer to this specification.
1.3 The piping works for watersupply and drainage in petrochemical industry cover the following pipeline and pipeline structures:
a) Pipeline:
1) Production and domestic water supply pipeline;
2) Fire-fighting pipeline;
3) Circulating water pipeline;
4) Production and domestic sewage pipeline;
5) Rain drainage pipeline;
6) Pipeline in water treatment and circulating cooling facilities.
b) Pipeline structures:
1) Watersupply and drainage well room;
2) Water inlet (outlet);
3) Buttress (retaining pier).
1.4 This specification is not applicable to the following watersupply and drainage pipeline:
a) Domestic watersupply and drainage pipeline in buildings;
b) Water pipeline of pipe duct type.
Note: Water pipeline of pipe duct type refers to the water pipeline with special-shaped section such as circular, rectangular and arched, which is built with brick, stone and concrete block, poured in place with reinforced concrete and assembled with reinforced concrete precast member.
Foreword I
1 Scope
2 Normative References
3 General Provisions
4 Materials
4.1 General Requirements
4.2 Steel-plate Pipe
4.3 Valve
4.4 Joint Materials
5 Earthwork
5.1 Paying off and Survey
5.2 Trench Excavation
5.3 Pipeline Foundation
5.4 Trench Backfill
5.4.1 Trench Backfill Procedure
5.4.2 Trench Backfill Construction
6 Pipeline Laying and Valve Installation
6.1 General Requirements
6.2 Steel Pipe
6.3 Internal and External Corrosion Protection of Steel Pipeline
6.3.1 Internal Anticorrosive Coating Materials of Cement Mortar
6.3.2 Internal Anticorrosive Coating Construction of Steel Pipe Cement Mortar
6.3.3 Internal Anticorrosive Coating of Cement Mortar Quality
6.3.4 External Anticorrosive Coating of Buried Steel Pipeline
6.3.5 Construction of the External Anticorrosive Coating of Petroleum Bitumen
6.3.6 External Anticorrosive Coating Construction of Epoxy Coal Tar Pitch
6.3.7 External Anticorrosive Coating Construction of PE Tape
6.3.8 Construction Environment of External Anticorrosive Coating of Steel Pipeline
6.3.9 External Anticorrosive Coating Quality
6.4 Cast Iron Pipe
6.5 Concrete Pipe
6.5.1 Concrete Pipe Construction
6.5.2 Pipeline Installation Quality
6.6 Plastic Pipe and Compound Pipe
6.6.1 Connection Type and Requirements
6.6.2 Solvent Bonding Connection
6.6.3 Socket Type Rubber Ring Sealing Joint
6.6.4 Threaded Connection
6.6.5 Transition Connection
6.6.6 Flanged Connection
6.7 Installation of Valves and Accessories
7 Ancillary Structures
7.1 General Requirements
7.2 Watersupply and Drainage Well Room
7.2.1 Brickwork Well Room
7.2.2 Cast-in-situ Concrete Well Room
7.2.3 Precast Concrete Well Room
7.2.4 Permissible Deviation of Well Room
7.3 Buttress
8 Pipeline Hydraulic Test and Rinsing
8.1 General Requirements
8.2 Hydraulic Test for Pressure Pipeline
8.3 Closed Water Test for Non-pressure Pipeline
8.4 Rinsing
9 Works Acceptance
Wording Explanation
