XJJ140-2021······1

1 總則······6

2 術(shù)語和符號······7

2.1 術(shù)語······7

2.2 符號······9

3 材料要求······10

3.1 一般規(guī)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(biāo)志、運輸和儲存······19

4 設(shè)計······20

4.1 一般規(guī)定······20

4.2 水力計算······21

4.3 管網(wǎng)的布置與敷設(shè)······21

4.4 管道應(yīng)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(guī)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(shè)······36

5.6 溝槽回填······36

6 壓力試驗、清洗和試運行······40

6.1 管網(wǎng)壓力試驗······40

6.2 管網(wǎng)清洗······41

6.3 系統(tǒng)試運行······42

7 工程竣工驗收······44

7.1 一般規(guī)定······44

7.2 工程質(zhì)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(zhì)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(guī)程······86

附錄F 管道電熔承插焊接規(guī)程······91

附錄G 質(zhì)量驗收報告及記錄······95

本規(guī)程用詞說明······103

引用標(biāo)準(zhǔn)名錄······104