Method and servicing interior of large container and service apparatus

摘要: A large container 12 has a narrow top opening 14. An apparatus 10 is collapsible to be insertable into the via opening. When inside container, arms 18 are opened outwardly from central chine 24. Castor wheels at ends of roll along an inner wall surface stabilize and allow displacement thereof. Service operations such as inspection, cleaning, maintenance repair can effected which serves platform. The service manually, or by means remote controlled automatically devices mounted on arm.