Regulations for Safety Inspection of Hazardous Machines and Equipment Article 155
The periodic inspection of the vessels for high-pressure gases shall be performed both internally and externally in accordance with the stipulations as shown below:1. Internal inspection:(1) Shall be performed once per five (5) years for those having been qualified by the structure inspection for not exceeding fifteen (15) years elapsed from the approval date of the said inspection; while once per two (2) years for those qualified for more than fifteen(15) years but not exceeding twenty (20) years; and once per year for those qualified for more than twenty (20) years.(2) Shall be performed once per five (5) years for those seamless high pressure vessels.2. External inspection:(1) Shall be performed once per year for high-pressure vessels mounted on vehicles.(2) Shall be performed once per five(5) years for those seamless high pressure vessels not mounted on vehicles.(3) The inspection frequency for those high pressure vessels which do not fall within the categories as specified in the above Sub-items(1) and(2) shall be performed in accordance with the requirements as stipulated in the preceding Paragraph 1.In case, for those imported vessels for high pressure gases, which have not performed the structure inspection, their manufactured date shall be used as the starting date to count the time duration stated in the preceding Paragraph 1.
中文原文 危險性機械及設備安全檢查規則第155條
高壓氣體容器之定期檢查，應依下列規定期限實施內部檢查及外部檢查：
一、內部檢查：
（一）自構造檢查合格日起算，未滿十五年者，每五年一次；十五年以上未滿二十年者，每二年一次；二十年以上者，每年一次。
（二）無縫高壓氣體容器，每五年一次。
二、外部檢查：
（一）固定於車輛之高壓氣體容器，每年一次。
（二）非固定於車輛之無縫高壓氣體容器，每五年一次。
（三）前二目以外之高壓氣體容器，依前款第一目規定之期限。
高壓氣體容器從國外進口，致未實施構造檢查者，前項起算日，以製造日期為準。
一、內部檢查：
（一）自構造檢查合格日起算，未滿十五年者，每五年一次；十五年以上未滿二十年者，每二年一次；二十年以上者，每年一次。
（二）無縫高壓氣體容器，每五年一次。
二、外部檢查：
（一）固定於車輛之高壓氣體容器，每年一次。
（二）非固定於車輛之無縫高壓氣體容器，每五年一次。
（三）前二目以外之高壓氣體容器，依前款第一目規定之期限。
高壓氣體容器從國外進口，致未實施構造檢查者，前項起算日，以製造日期為準。