Periodic requalification. Recommendations for periodic requalification by visual inspection or testing during the service life shall be provided by the cylinder manufacturer on the basis of use under service conditions specified herein. Each cylinder shall be visually inspected at least every 48 months after the date of its entry into service on the vehicle (vehicle registration), and at the time of any re-installation, for external damage and deterioration, including under the support straps. The visual inspection shall be performed by a competent agency approved or recognized by the Regulatory Authority, in accordance with the manufacturers specifications: Cylinders without label containing mandatory information, or with labels containing mandatory information that are illegible in any way shall be removed from service. If the cylinder can be positively identified by manufacturer and serial number, a replacement label may be applied, allowing the cylinder to remain in service.
Periodic requalification. Recommendations for periodic requalification by visual inspection or testing during the service life shall be provided by the cylinder manufacturer on the basis of use under service conditions specified herein. Each certified cylinder shall be visually inspected at least every 48 months after the date of its entry into service on the vehicle (vehicle registration), and at the time of any reinstallation, for external damage and deterioration. It is suggested to visually inspect under the support straps as well. The visual inspection shall be performed by a competent agency approved or recognized by the Regulatory Authority, in consideration of the manufacturer's specifications: Certified cylinders without label containing mandatory information or with labels containing mandatory information that are illegible in any way shall be removed from service. If the certified cylinder can be positively identified by manufacturer and serial number, a replacement label may be applied, allowing the certified cylinder to remain in service. Contracting Parties requiring a more frequent (than every 48 months) or more stringent periodic requalification of cylinders may do so in accordance with the national or regional requirements.
Periodic requalification. Recommendations for periodic requalification by visual inspection or testing during the service life shall be provided by the cylinder manufacturer on the basis of use under service conditions specified herein. Each cylinder shall be visually inspected at least every 36 months, and at the time of any re-installation, for external damage and deterioration, including under the support straps. The visual inspection shall be performed by a competent agency approved or recognized by the Regulatory Authority, in accordance with the manufacturers specifications: Cylinders without label containing mandatory information, or with labels containing mandatory information that are illegible in any way shall be removed from service. If the cylinder can be positively identified by manufacturer and serial number, a replacement label may be applied, allowing the cylinder to remain in service. E/ECE/324 Rev.2/Add.109 Regulation No. 110 page 50 Annex 3
