【正文】 線進(jìn)行了全面檢測，檢測結(jié)果為管線腐蝕不很嚴(yán)重 ，最大蝕坑深度為，管線剩余壁厚大多在 ；管線防腐層為石油瀝青玻璃布，厚度為 4mm，防腐層電阻最大值為 3600Ω管線主要穿越流沙河，穿越本遼高速及多處鄉(xiāng)間公路。 管線所經(jīng)地區(qū)為水田和旱地，土壤類型為褐色壤土，土壤電阻率在 ～ Ω 輸氣管線陰極防腐保護(hù)工程初步設(shè)計(jì) 1 1 概述 工程概況及設(shè)計(jì)基礎(chǔ)資料 牛居 — 青龍臺(tái) D426 輸氣管線工程，始建于 1984 年， 目前仍在運(yùn)行。s lives and safety. So it is necessary and essential to take anticorrosion protection for the gas pipeline. Cathodic protection is a recognized as anticorrosion technology. It is broadly applied in the protection of the media pipeline, storage containers, and chemical equipment, and other various aspects, especially in the buried steel pipeline. Many papers report the electrochemical corrosion of metals and anticorrosion theory for the buried natural gas pipeline. We analyze the corrosion status of the NiujuQinglongtai natural gas pipeline and design a corrosion protective layer. It is found that a variety of factors including soil can affect corrosion. Our work has certain practical value and guiding sense. This project is constructed according to the requirement of the Ciyutuo Oil Production Company of Liaohe Oil Field of China. The design of corrosion protection plies with the regulations and policies of our nation and chemical industry. In this work, we take the new technology, new equipments, and new materials. And we guarantee that all the measurement and methods are technically feasible in a design philosophy of feasibility of technology, rationality of economy, security and environmental protection, human centered as the guiding ideology. Key Words： Corrosion； Cathodic Protection； Design philosophy； Design basis 輸氣管線陰極防腐保護(hù)工程初步設(shè)計(jì) III 目 錄 摘 要 ..................................................................................................................................... I Abstract ...................................................................................................................................... II 1 概述 ...................................................................................................................................... 1 工程概況及設(shè)計(jì)基礎(chǔ)資料 ......................................................................................... 1 檢測結(jié)論 ................................................................................................................... 1 工程概況 ................................................................................................................... 2 調(diào)查數(shù)據(jù)綜合分析評價(jià) ........................................................................................... 3 2 管道陰極保護(hù) ...................................................................................................................... 8 陰極保護(hù)設(shè)計(jì)的基礎(chǔ)資料 ......................................................................................... 8 陰極保護(hù)系統(tǒng)的構(gòu)成及附屬設(shè)施 ........................................................................... 9 計(jì)算公式 ................................................................................................................. 10 計(jì)算結(jié)果 ................................................................................................................. 11 陰極保護(hù)設(shè)計(jì)技術(shù)要求 ......................................................................................... 11 3 特殊管段防腐 .................................................................................................................... 13 4 環(huán)境保護(hù) ............................................................................................................................ 13 主要污染源、污染物及其控制 措施 ..................................................................... 13 引起的生態(tài)變化所采取的防范措施 ..................................................................... 13 綠化 ......................................................................................................................... 14 環(huán)境影響分析 ......................................................................................................... 14 5 職業(yè)安全衛(wèi)生 .................................................................................................................... 14 職工安全衛(wèi)生設(shè)計(jì)中采用的主要防范措施 ......................................................... 14 預(yù)期效果 ................................................................................................................. 14 6 消防 .................................................................................................................................... 15 建 (構(gòu) )筑物 .............................................................................................................. 15 消防設(shè)施 ................................................................................................................. 15 預(yù)期效果 ................................................................................................................. 15 7 節(jié)能 .................................................................................................................................... 15 能耗分析 ................................................................................................................. 15 節(jié)能措施 ................................................................................................................. 15 8 定員要求 ............................................................................................................................ 15 9 概算投資 ............................................................................................................................ 15 輸氣管線陰極防腐保護(hù)工程初步設(shè)計(jì) IV 主要符號(hào)表及說明 .................................................................................................................. 16 參 考 文 獻(xiàn) ............................................................................................................................ 17 附錄 A 調(diào)查數(shù)據(jù)結(jié)果表 ......................................................................