在CB8334—87《液化石油气钢瓶定期检验与评定》中的7.3条规定:从卸去瓶阀到检验工作完成的总周期不允许超过10天。否则应附加内观检验,其允许缺陷容限同外观检验。但目前我国各液化石油气钢瓶(以下简称钢瓶)检验站绝大多数未做此检验项目,理由是钢瓶从卸去瓶阀到检验工作完成的总周期未超过10天。但钢瓶内部的缺陷到底如何却很少有人关注。日前,我们钢瓶检验站对在用的钢瓶进行了一次随机的内部检验,抽取了到检验周期的YSP—15型钢瓶30只,卸去瓶阀经蒸汽吹扫合格后马上使用日本OL YMPUS公司生产IF—8D3/11D3型工业纤维内窥 Article 7.3 of CB8334-87 Periodic Inspection and Assessment of Liquefied Petroleum Gas Cylinders stipulates that the total period from the unloading of a valve to the completion of inspection work is not allowed for more than 10 days. Otherwise, internal inspection should be attached, which allows defects with the appearance of inspection tolerance. However, at present, most of the liquefied petroleum gas cylinders (hereinafter referred to as “cylinders”) in our country do not make this inspection item because the total cycle from the unloading of a cylinder valve to the completion of inspection work does not exceed 10 days. However, the lack of internal defects in the cylinder but very few people concerned. A few days ago, our cylinder inspection station carried out a random internal inspection of cylinders in use, taking the inspection cycle of YSP-15-type cylinders 30, unloading bottle valve steam purge qualified immediately after the use of Japan OL YMPUS company IF-8D3 / 11D3 industrial fiber endoscopy