GB/T50393-2017：钢质石油储罐防腐蚀工程技术标准

GBT50393-2017······1

1 总则······11

2 术语······12

3 基本规定······16

3.1 职责······16

3.2 防腐蚀工程的设计寿命······16

3.3 腐蚀等级······17

3.4 其他······17

4 设计······19

4.1 般规定······19

4.2 涂料涂层······20

4.3 金属涂层······21

4.4 罐底板边缘防护······21

4.5 阴极保护······22

5 施工······27

5.1 一般规定······27

5.2 表面处理······27

5.3 涂料涂层······28

5.4 金属涂层······30

5.5 边缘底板防护······30

5.6 阴极保护······30

5.7 过程检查与施工质量控制······32

6 交工验收······35

7 运行维护······37

7.1 一般要求······37

7.2 涂层······37

7.3 阴极保护······38

附录A 常用涂料性能指标······40

附录B 不同腐蚀等级下常用防腐蚀方案······50

附录C 介质环境油品储罐常用防腐蚀方案······57

附录D 阴极保护······60

附录E 阴极保护电位的测试······78

附录F 磨料和表面处理······80

附录G 露点温度值查对表······84

附录H 涂装质量检验规则及方法······86

本标准用词说明······89

引用标准名录······90

附:条文说明······93

1 总则······98

2 术语······99

3 基本规定······101

3.2 防腐蚀工程的设计寿命······101

3.3 腐蚀等级······101

3.4 其他······106

4 设计······107

4.1 一般规定······107

4.2 涂料涂层······108

4.3 金属涂层······115

4.4 罐底板边缘防护······115

4.5 阴极保护······116

5 施工······119

5.1 一般规定······119

5.6 阴极保护······119

5.7 过程检查与施工质量控制······120

6 交工验收······131

7 运行维护······133

7.2 涂层······133

附录A 常用涂料性能指标······134

附录B 不同腐蚀等级下常用防腐蚀方案······135

附录C 介质环境油品储罐常用防腐蚀方案······136

附录D 阴极保护······137

附录E 阴极保护电位的测试······139

附录F 磨料和表面处理······140

附录G 露点温度值查对表······141

附录H 涂装质量检验规则及方法······143