Acoustic Canopies

All the canopies built at Orkal’s plant Israel on an engineering production line. They are specially made in a range of variations that conform to non-standard weights and noise levels. Standard canopies that are fixed to the generator’s body enable movement of the units from place to place, thereby saving the generator’s owner the need to build storerooms and/or acoustic room, while retaining very low noise levels of 45-75 dB(A) at a distance of seven meters from the units at full load. Our acoustic canopies conform to the strictest standards prescribed by law:

• Orkal has ISO 9001 standard for the manufacture of canopies and special silencers for generators
• Orkal has Standards Institution of Israel certification SI 755 – Fires in rooms
• The canopies are tested and certified by a certified laboratory pursuant to standard ISO 7235 – silencers
• Hoist hooks are certified by an inspector engineer
• Fuel tanks have standard UL 142 certification
• All auxiliary materials conform to the strictest fire standards
• The canopies are adapted and precisely designed to prevent damage and enable the generator’s proper functioning
• An ambient temperature range of up to 50 degrees

Characteristics of canopy materials and structure

• The canopy’s metal structure will be made from 2-5 mm thick galvanized sheets, which enable many years of work continuity in exposed locations exposed to corrosion and near the sea
• The galvanized metal canopy and axes are painted by AFC technology at a high temperature in a kiln
• Powder paints are made from pure polyester with extraordinary properties in tough environments against corrosion, solar radiation, and dust, able to withstand blows, and no exposure to rust

Canopy design

• The canopies are designed and adapted for a temperature range +50°, 100% power output without heating the diesel and spaces
• The canopy design takes into account all the generator particulars, including engine model, continuous KVA output, overall weight, radiator size, heat generation in KW, airflow, airflow for burning, permitted pressure flow mmWG, exhaust pressure flow mmLTG, and required noise level
• Uncompromising design and precision performance for maximum use of the unit in normal times and emergencies while protecting the diesel lifespan
• The canopy has service doors on every side to provide easy access for servicing and maintenance to all parts of the diesel generator. There is also an access door to the control panel’s gauges and commands.
• The sides, doors, and ceiling of the canopy have an interior fire-resistant acoustic absorbent coating/galvanize aluminum mesh, rock wool
• The air intake and outlet vents and all the cooling vents of the diesel generator will be designed and installed in a way that will not affect its performance and power output during operations
• The gauges panel and canopy are sealed against rainwater and resistant to solar radiation and machinery vibrations during the diesel generator’s operation
• All of the canopy’s interior materials are resistant to motor heat, fuel, oil, oil vapors, water, and gas emissions
• All of the canopy’s exterior materials are resistant to dampness, fuel, oil, heat, and fire pursuant to standard LSK.U 1988 no. 1324 or equivalent standard
• Work hours, extreme environmental conditions, and VU influence

Emissions system characteristics

• Active and reactive silencer system sill installed on the units to abate up to 40 decibels without affecting the functioning of the diesel and its performance