本標(biāo)準(zhǔn)共分9章和1個附錄,主要內(nèi)容有:總則、術(shù)語、基本規(guī)定、調(diào)查與測試、直流干擾的識別和評價、直流干擾防護(hù)措施、干擾防護(hù)效果的評定、干擾防護(hù)的調(diào)整、干擾防護(hù)系統(tǒng)的管理等。

GB50991-2014······1

1 總則······9

2 術(shù)語······10

3 基本規(guī)定······12

4 調(diào)查與測試······12

4.1 一般規(guī)定······14

4.2 調(diào)查與測試的項目······14

4.3 測試作業(yè)的分類······16

4.4 測試作業(yè)的要求······20

5 直流干擾的識別和評價······22

6 直流干擾防護(hù)措施······23

6.1 一般規(guī)定······23

6.2 排流保護(hù)······24

6.3 陰極保護(hù)······27

6.4 防腐層修復(fù)······28

6.5 等電位連接······28

6.6 絕緣隔離······28

6.7 絕緣裝置跨接······28

6.8 屏蔽······30

7 干擾防護(hù)效果的評定······30

8 干擾防護(hù)的調(diào)整······32

9 干擾防護(hù)系統(tǒng)的管理······33

附錄A 埋地鋼質(zhì)管道直流干擾測試方法······35

本標(biāo)準(zhǔn)用詞說明······44

引用標(biāo)準(zhǔn)名錄······45

附:條文說明······47

1 總則······49

3 基本規(guī)定······50

4 調(diào)查與測試······54

4.1一般規(guī)定······54

4.2 調(diào)查與測試的項目······54

4.3 測試作業(yè)的分類······54

4.4 測試作業(yè)的要求······55

5 直流干擾的識別和評價······56

6 直流干擾防護(hù)措施······57

6.1 一般規(guī)定······57

6.2 排流保護(hù)······59

6.3 陰極保護(hù)······60

6.4 防腐層修復(fù)······61

7 干擾防護(hù)效果的評定······62

8 干擾防護(hù)的調(diào)整······66

9 千擾防護(hù)系統(tǒng)的管理······67

附錄A 埋地鋼質(zhì)管道直流干擾測試方法······68