Cause analysis and prevention of insulating layer smoldering in steam pipeline of a nuclear power plant

WANG Xiaowei1; TANG Jinwei1; TONG Chuhua2; YANG Fa2 1.Xi'an Thermal Power Research Institute Co.

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Cause analysis and prevention of insulating layer smoldering in steam pipeline of a nuclear power plant

更新时间：2025-09-28

- Cause analysis and prevention of insulating layer smoldering in steam pipeline of a nuclear power plant
- Thermal Power Generation Vol. 42, Issue 2, Pages: 114-116(2013)
- 作者机构：
  
  1. 西安热工研究院有限公司
  2. 中核集团核电秦山联营有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TL353.11
- Published：2013
- 稿件说明：
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WANG Xiaowei1, TANG Jinwei1, TONG Chuhua2, et al. Cause analysis and prevention of insulating layer smoldering in steam pipeline of a nuclear power plant[J]. Thermal power generation, 2013, 42(2): 114-116.
DOI：

WANG Xiaowei1, TANG Jinwei1, TONG Chuhua2, et al. Cause analysis and prevention of insulating layer smoldering in steam pipeline of a nuclear power plant[J]. Thermal power generation, 2013, 42(2): 114-116. DOI：

摘要

对某核电机组蒸汽管道保温材料发生阴燃的原因进行了分析

结果表明其主要由保温材料中渗入油所致。在高温蒸汽管道的烘烤下

油受热快速挥发并在某保温层内不断积聚直至发生阴燃。保温材料中渗油量越大

阴燃越严重。解决阴燃最根本的措施是将油与保温材料进行物理隔离。

Abstract

After analysis

the infiltration of oil into the heat insulating material was considered as the main reason.Suffered from high temperature baking by steam pipes

the oil was heated and volatilized quickly.It accumulated inside the insulating material until smoldering occurred.The greater leakage of the oil into insulating material

the more serious the smoldering happened.The basic countermeasure for this is to isolate the oil and insulating layer thoroughly.

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