气瓶充装安全技术操作规程

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(1)充装前的检查  气瓶在充装之前，必须经过认真仔细的检查，以防止一切不符合要求和规定的气瓶投入充装，排除不安全因素，保证气瓶在充装和使用过程中的安全。

①气瓶是否由持有制造许可证的单位制造的，气瓶是否属于制造单位或有关主管安全监察部门宣布报废或规定停用或需要复检的产品。

②气瓶改装是否符合要求。

③气瓶原始标志是否符合标准和规定，铅印字迹是否清晰可见。气瓶的铅印标记上的内容应包括：气瓶制造单位名称或代号；气瓶编号；水压试验压力；公称工作压力；实际质量；实际容积；瓶体设计壁厚；制造单位检验标记和制造年月；监督检验标记；寒冷地区用气瓶标记。

④气瓶是否在规定的定期检验有效期限内。

⑤气瓶上标出的公称工作压力是否符合欲装气体规定的充装压力。气瓶的公称工作压力规定如下：气体在基准温度下(20℃)的充装压力(盛装压缩气体的气瓶)；按规定的充装系数充装，温度为60℃时介质压力(液化气体)；限定充装量下，温度为60℃时瓶内乙炔气的压力(溶解乙炔)。

⑥气瓶的颜色、字样是否符合《气瓶颜色标记》的规定。

⑦气瓶附件是否齐全，并符合技术要求。

⑧气瓶内有无剩余压力，剩余气体与欲装气体是否相符合。

⑨盛装氧气或强氧化性气体的气瓶的瓶阀和瓶体是否沾有油脂。

⑩首次充气的气瓶是否经过置换或真空处理。

⑩瓶体有无裂纹、严重锈蚀、明显变形、机械损伤等缺陷。

(2)气瓶的充装量  气瓶的充装量是指气瓶在单位容积内允许充装的气体或液化气体的最大质量，所以也称最大充装量或安全充装量。各类气瓶的充装量应该根据气瓶的许用压力和最高使用温度确定。其原则是保证所装气体或液化气体在最高使用温度下，其压力不超过气瓶的许用压力。

气瓶许用压力是为保证气瓶安全，允许瓶内达到的最高压力。我国规定：高压气瓶的许用压力等于气瓶的公称工作压力；永久气体气瓶的许用压力为公称工作压力的1．2倍或水压试验压力的 0．8倍。

气瓶的最高使用温度是指气瓶在充装气体以后可能达到的最高温度。根据我国《气瓶安全监察规程》规定，国内使用的气瓶，最高使用温度为60℃。

永久气体(压缩气体)气瓶的充装量与液化气体不同，它是指在最终充装温度下的充装压力。

(3)液化气体的充装

①实行充装复检制度，严禁过量充装。

②称量衡器应保持准确。

③严禁从液化石油气槽车直接向气瓶灌装。

④充装后逐只检查，发现有泄漏或其他异常现象应妥善处理。

⑤认真填写充装记录。

⑥操作人员应相对稳定，并定期进行安全教育和考核。

(4)充装后的检查

①瓶壁温度有无异常。

②瓶体有无出现鼓包、变形、泄漏或充装前检验的缺陷。

③瓶阀和瓶口连接处的气密性是否良好，瓶帽和防爆圈是否齐全完好。

④颜色标记和检验色标是否齐全并符合技术要求。

⑤取样分析瓶内气体纯度及杂质含量是否在规定的范围内。

⑥实测瓶内气体压力、质量是否在规定的范围内。

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