Tank Cleaning | Manway Access: Cleaning Does Not Always Require a Large-Scale Setup
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    October 23, 2026

    Tank Cleaning | Manway Access: Cleaning Does Not Always Require a Large-Scale Setup

    Comprehensive mechanised cleaning systems have their place in large storage tanks. For refined-product tanks, chemical storage tanks and smaller crude oil tanks in oilfields with capacities below 10,000 m³, however, simply adopting the same equipment layout used for large tanks may make site coordination, equipment mobilisation and lifting operations more complex.

    01 Equipment Must Be Able to Get In

    Bringing tank-cleaning equipment to the site does not mean work can begin as soon as it is placed beside the tank.

    How equipment approaches the tank, where cleaning components enter, how piping is routed and whether lifting facilities are available all affect how the work is organised.

    Some small and medium-sized tank installations have particularly limited space, with process piping, valves, equipment and other facilities already positioned around them.

    If cleaning requires extensive equipment lifting and complex piping arrangements, this adds to the preparatory work and makes site coordination more demanding.

    02 Manway Access Offers More Flexible Deployment

    A tank manway is an important access point for equipment maintenance, personnel entry and work inside the tank.

    For mechanised cleaning of small and medium-sized tanks, Tecway equipment can use the tank manway to deploy cleaning guns and other working equipment.

    Tank-cleaning equipment deployed through a manway

    Tank-cleaning equipment deployed through a manway

    Compared with approaches requiring more complex tank-roof arrangements or extensive lifting, this solution can reduce some of the more complicated lifting operations, allowing greater flexibility in equipment mobilisation and on-site deployment.

    03 Access Matters Even More in Internal Floating-Roof Tanks

    Internal floating-roof tanks are a common application among small and medium-sized storage tanks.

    The floating deck, support columns and other components inside the tank mean that, once equipment is brought in, both cleaning coverage and compatibility with the internal structure must be considered.

    If installing the equipment requires removing numerous internal components, both preparation and subsequent reinstatement work will increase.

    Tecway Industrial's existing compact mechanised cleaning solutions allow equipment to be deployed through a tank manway and the relevant cleaning work to be carried out without removing the internal floating-roof support columns.

    Once equipment is inside the tank, understanding the distribution of sludge and adjusting the cleaning position directly affect the final cleaning results.

    Mechanised Tank-Cleaning Equipment Rental and Cleaning Services

    Tecway Industrial provides two types of service for mechanised tank cleaning: equipment rental and cleaning services.

    Equipment Rental

    For tank-cleaning companies and engineering service providers, equipment can be configured according to tank type, project conditions and actual cleaning requirements.

    Companies with fluctuating project volumes or intermittent equipment needs can configure equipment flexibly for individual projects, reducing upfront equipment investment and the burden of long-term idle capacity.

    Cleaning Services

    For tank-farm owners and operators at oil depots, refineries, chemical plants and oilfields, mechanised tank-cleaning project services can be provided according to tank type, stored product, site conditions and project requirements. Work execution and cleaning plans are developed to suit actual operating conditions.

    About Tecway Industrial

    Tecway Industrial Systems Limited, formerly Tecway International (Petrochemical) Limited, was established in Hong Kong in 1995. Beijing Tecway Xuyang Industrial Equipment Co., Ltd. is its subsidiary registered in Beijing.

    Tecway Industrial Systems Limited and Beijing Tecway Xuyang Industrial Equipment Co., Ltd. primarily provide services related to importing equipment for the oil and gas storage and transportation, petrochemical and related industries. As consultants and distributors, we carefully select practical, high-quality and cost-effective solutions for our customers, sourcing products from reputable suppliers around the world.