ДСТУ EN 1775:2022 Газоснабжение. Газопроводы для построек. Максимальное рабочее давление меньше или равно 5 бар. Рекомендации по функционированию (EN 1775:2007, IDT)



ДСТУ EN 1775:2022
(EN 1775:2007, IDT)

Газопостачання. Газопроводи для будівель. Максимальний робочий тиск менше або
дорівнює 5 бар. Рекомендації щодо функціонування

 
   
 
 
     
Не є офіційним виданням.
Офіційне видання розповсюджує національний орган стандартизації
(ДП «УкрНДНЦ» http://uas.gov.ua)

Contents

Foreword

Introduction

1 Scope

2 Normative references

3 Terms and definitions

3.1 Definitions relating to pressures

3.2 Definitions relating to the gas installation

3.3 Definitions relating to means of isolation

3.4 Definitions relating to jointing methods

3.5 Definitions relating to fittings

3.6 Definitions relating to tests

3.7 Definitions relating to commissioning, operation and maintenance

3.8 Definitions relating to assembling processes

3.8.1 Definitions for welding

3.8.2 Definitions for soldering and brazing

4 Design

4.1 General

4.2 Selection of components

4.3 Location

4.4 Protection in case of fire

4.5 Sizing

4.6 Safety devices

5 Construction

5.1 Installation

5.2 Pipework jointing methods

5.2.1 Threaded joints

5.2.2 Welded, brazed, soldered and fusion joints

5.2.3 Mechanical joints

5.2.4 Pressed joints

5.2.5 Stainless steel pliable corrugated tubing system jointing

5.3 Entries through walls and floors

5.4 Corrosion

5.5 Means of isolation

5.6 Regulators and meters

5.7 Flexible appliance connectors

6 Testing

6.1 General recommendations

6.2 Recommendations relating to the safety of persons and property during testing

6.3 Test fluids

6.3.1 Fluids used

6.3.2 Use of inert gas

6.3.3 Utilisation of the gas to be distributed

6.4 Test conditions

6.5 Strength testing

6.6 Tightness testing

6.7 Additional tests

7 Commissioning

7.1 General

7.2 Admission of gas

8 Operation and maintenance

8.1 General

8.2 Maintenance

8.3 Abnormal situations

8.4 Leak detection

8.5 Work on operating pipework

8.6 Purging from gas

Annex A (informative) Resistance to high temperatures

A.1 General

A.2 Procedure A

A.2.1 Test criteria

A.2.2 Test method

A.3 Procedure B

A.3.1 Test criteria

A.3.2 Test method

Annex B (informative) General guidelines for the construction of joints

B.1 General

B.2 Installation operatives

B.3 Quality Control

B.4 Documentation

Annex C (informative) Guidelines for the construction of welded, brazed, soldered joints, and polyethylene fusion joints

C.1 Welding of steel

C.1.1 Materials

C.1.2 Approval of the welding procedure

C.1.3 Pipework with a maximum operating pressure (MOP) up to and including 0,1 bar and a wall thickness less than 4mm

C.1.4 Pipework with a maximum operating pressure (MOP) over 0,1 bar or wall thickness including and above 4 mm

C.2 Brazing and soldering of copper and copper alloys

C.2.1 Materials

C.2.2 Brazing and soldering procedure

C.2.3 Pipework with a maximum operating pressure (MOP) up to and including 0,1 bar

C.2.4 Pipework with a maximum operating pressure (MOP) over 0,1 bar

C.3 Fusion jointing of polyethylene

C.3.1 Materials

C.3.2 Polyethylene fusion jointing procedure

C.3.3 Qualification of personnel

C.3.4 Quality control

Annex D (informative) Guidelines for the construction of pressed joints

D.1 Jointing procedure with press fittings on copper pipes

D.1.1 General

D.1.2 Installation process

D.2 Jointing procedure with press fittings on multi-layer and PEX

D.2.1 General

D.2.2 Installation process

Annex E (informative) Guidelines for the construction of stainless steel pliable corrugated tubing systems

E.1 General

E.2 Components of the system

E.3 Stainless steel pliable corrugated tubing systems jointing procedure

E.3.1 General

E.3.2 Training of personnel

E.3.3 Quality control

Bibliography