Spherical Gas Holder Shut Down Inspection (TOFD/Eco-Purge/Encapsulated MT)|Daigas G&P Solution

LNG Plant Technologies

Engineering business

Spherical Gas Holder Shut Down Inspection (TOFD/Eco-Purge/Encapsulated MT)

We perform shut down inspection and in service inspection of spherical gas holders in accordance with the Japan Gas Association spherical gas holder guidelines. Among the ultrasonic testing methods, the TOFD method (time of flight diffraction) is performed using robots which autonomously run along the weld lines on the outer surface. The results obtained via the TOFD method are evaluated using the fatigue-life assessment method, and the spherical gas holders are individually assessed, making it possible to extend the interval between inspections (up to 15 years).

Spherical Gas Holder Shut Down Inspection (TOFD/Eco-Purge/Encapsulated MT)

Overview

Shut Down Inspection / In Service Inspection
● Shut Down Purge / Recovery Purge
● Shut Down Purge / Recovery Purge
● Temporary Scaffolding
● Pre-Inspection Procedures, Inspection Work
(Paint stripping, magnetic particle testing and ultrasonic testing (TOFD method), other inspections)
● Maintenance / Replacement / Other Inspections
(Valve maintenance, safety valve maintenance, other inspections)
● Painting
● Individual assessment of spherical gas holders using the fatigue life assessment method (FAD assessment)
Qualifications: Chief Gas Engineer (1st Class / 2nd Class) / High Pressure Gas Manufacturing
Safety Engineer (1st Class / 2nd Class) HPI Hydraulic Equipment Diagnostic Technician Level 1 or Level 2
● Our proprietary TOFD inspection robots enable highly accurate and efficient inspection

Experience

Asahikawa Gas, Osaka Gas, Kanazawa Water and Energy Center, Sakata Natural Gas, Shibata Gas, Shirone Gas, Daiwa Gas, Chubu Gas, Tsuruoka Gas, Nabari Kintetsu Gas, Nippon Gas, Matsue City Gas Bureau, Morioka Gas, etc.