Description
Engineering Application & Overview
Hertz Water-Driven and Pneumatic Gas Freeing Fans provide ATEX-compliant ventilation of confined spaces aboard vessels — cargo tanks, void spaces, ballast tanks, fuel tanks, and sewage tanks — where electrical ventilation fans create unacceptable ignition risk from residual hydrocarbon vapour, explosive gas atmospheres, or oxygen-deficient conditions that would cause electric motor failure. Driven entirely by water pressure from the ship’s fire main (water-driven variant) or from compressed air supply (pneumatic variant), Hertz gas freeing fans produce high-volume airflow to displace explosive, toxic, or oxygen-deficient atmospheres before personnel entry as required by SOLAS regulations, ISM Code confined space entry procedures, and port state control inspection requirements. Rapid atmosphere changeover time is critical to shipyard repair schedule efficiency — Hertz gas freeing fans’ high flow rate minimizes the pre-entry ventilation hold time, enabling earlier commencement of hot work or personnel entry at Kepulauan Riau shipyards.
Technical Specifications Table
| Parameter | Specification |
|---|---|
| Brand | Hertz |
| Drive Type | Water turbine (fire main) / Pneumatic air motor |
| Max Air Flow | Up to 15,000 m³/hr |
| ATEX Rating | Yes – spark-free, suitable for Zone 0/1/2 |
| Water Supply Pressure | 3 – 8 bar (water-driven) |
| Air Supply Pressure | 5 – 7 bar (pneumatic) |
| Duct Diameter | 200 – 450 mm |
| Duct Type | Flexible ventilation hose (included) |
| Compliance | SOLAS / ISM confined space entry requirements |
| Frame Material | Aluminium alloy (spark-resistant) |
The PT HHM Batam Authorized Advantage
PT HHM Engineering Solutions stocks Hertz gas freeing fans in Batam for immediate supply to vessel operators, shipyards, and industrial tank inspection companies across Kepulauan Riau. As Hertz’s authorized distributor in Batam, we ensure every fan supplied meets current ATEX and SOLAS ventilation requirements. Rapid dispatch for urgent confined space entry operations. Contact: +62 778 489 3282.
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