에이치엔엔지니어링(HN Engineering)

PRODUCTS

Arm Sizes : 3" to 24" Diameter
Materials : Carbon Steel / Low Temperature Carbon Steel /
Stainless Steel & Other special alloys
Pressure up to : 40 bar
Design Temperature : -200℃ ~ +200℃
Operation Method : Manual or Hydraulic
Main Arm Swivel Joint Styles, below
- Riser & Trunnion Swivel Joint : Style 50
- Apex Swivel Joint : Style 40
- Outboard Arm Swivel Joint : Style 80

The control power for the arms shall be hydraulic and/or electric.
Arms shall be maneuvered through either the fixed control panel, or through a wired/wireless remote control.
The arm local control panel and remote control boxes shall not be operated at the same time.
Limit Switch and Alarm for Slewing and Rotation

Hydraulic power unit consisting of reservoir, pumps and motors, filters, relief valves, gauges and etc.
Hydraulic Accumulator
Emergency Hand Pump
Emergency Release System(ERS)
All hydraulic pipe work in loading arm

Hydraulic lines, including tube and fittings, shall be stainless steel grade 316 or 316L.
Tube sizes should be adequately sized to provide adequate flow rated for the equipment with jetty mounted pipe work being no smaller than 10mm diameter.
Suitable flexible hose may be used as required to provide joints or electrical insulation.
For each arm an accumulator shall be provided to operate the ERS and loading arm to the locked position.
Accumulators shall be sufficiently sized so that the loading arms can be maneuvered back to the parking position in the event of power failure under all operating conditions.
When the arm parking lock is not properly engaged, a light shall be flashed at the control panel.
The control system for the hydraulic operations of the arm may be manufacturer's standards, subject to owner's approval.

Marine loading arms shall incorporate an emergency release coupler in the vertical upstand of triple swivel assembly with double ball.
ERS ensuring best possible safety in fluid loading/unloading operations with marine loading arms.
The system allows full automatic and safe disconnection of the loading arm from the ship without product spillage, when the arm exceeds the operating envelope's limit line.
The ERS shall be controlled automatically and manually.
- Automatically : by over-reach signal
- Manually : by push-buttons at the arm control panel and other defined shore location under healthy power condition.
The two valves shall be mechanically interlocked to guarantee simultaneous closure.
Facilities shall be provided, either hydraulic or manual, for reopening of the valves after emergency closure.
Control of the ERS shall guarantee valve closure prior to emergency release.
The arrangement of the ERS assembly near the outboard end shall be such that parts of the ERS assembly remaining on board of the ship after emergency release will not fall on ship's deck or manifold service platform.
The hydraulic cylinder operating the emergency release coupling shall be of the double acting hydraulic actuator.
The strength of ERS shall be based on the requirements of OCIMF.