Анализ состояния технологического оборудования химического цеха, причины снижения надежности и экономичности, страница 6

•  100% пробоотборников имеет плохое или нестабильное охлаждение.

•  22 % пробоотборников воды и пара КЦ имеет плохое охлаждение.

•  11% пробоотборников КЦ изношено».

Анализ повреждения поверхностей нагревов котлов НТЭЦ-4 за 2002 г, проведенный лабораторией металлов ПРП показывает, что основными причинами выхода котлов из строя являются:

1. Длительный перегрев (пароперегреватель-6)                   -        27,3%                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          

2. Эрозионный износ (ВЭК-4,пароперегреватель-1 )            -        22,7%                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

3. Язвенная коррозия на внутренней поверхности               -        13,6%

(ВЭК-1/пароперегреватель-2)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             

4. Иные причины                                                                  -        36,4%

(дефекты сварки, усталость, коррозия внешн. поверхности и др.)                                                                                                                                                                                                                                                                                                                                                                          

Анализ проведения очисток котлов от внутренних отложений: обоснованность очисток, расход топлива, электроэнергии на очистку котлов.