XJJ140-2021······1

1 總則······6

2 術語和符號······7

2.1 術語······7

2.2 符號······9

3 材料要求······10

3.1 一般規定······10

3.2 GRPE熱水保溫管道······10

3.3 PE-RTⅡ管材及管件······14

3.4 管道標志、運輸和儲存······19

4 設計······20

4.1 一般規定······20

4.2 水力計算······21

4.3 管網的布置與敷設······21

4.4 管道應力和作用力的計算······25

4.5 管道閥門及附件······28

4.6 管道保溫······29

5 施工······31

5.1 一般規定······31

5.2 溝槽開挖······32

5.3 PE-RTII管道連接······33

5.4 接頭保溫······35

5.5 管道敷設······36

5.6 溝槽回填······36

6 壓力試驗、清洗和試運行······40

6.1 管網壓力試驗······40

6.2 管網清洗······41

6.3 系統試運行······42

7 工程竣工驗收······44

7.1 一般規定······44

7.2 工程質量驗收······44

7.3 竣工驗收······46

附錄A GRPE熱水保溫管道的檢驗······48

附錄B 軸向剪切強度的測試方法······52

附錄C PE-RTⅡ管材及管件原材料的質量要求······54

附錄D GRPE熱水保溫管道的水力計算······57

附錄E 管道熱熔對接焊接規程······86

附錄F 管道電熔承插焊接規程······91

附錄G 質量驗收報告及記錄······95

本規程用詞說明······103

引用標準名錄······104