JIS F 2320 Type B Horizontal Opening Cargo Oil Tank Hatch Cover | Marine

Product Specification

JIS F 2320 Type B Horizontal Opening Cargo Oil Tank Hatch Cover | Marine Outfitting

Product Overview

The JIS F 2320 Type B horizontal opening cargo oil tank hatch cover is an oil-tight hatch cover installed on oil cargo tanks for personnel inspection, access, and maintenance entry while maintaining oil and gas tightness. It is designed for horizontal opening arrangements where secure sealing, safe operation, and cargo tank protection are required.

The Type B hatch cover uses a hinged closing arrangement according to the supplied data. Transmission parts are generally designed with copper alloy components to reduce the possibility of sparks during opening and closing operations. The observation hole, oil-tight closing device, anti-erosion filter, and fire copper mesh arrangement should be confirmed from the approved drawing and project requirement.

Public references for JIS F 2320 describe oil-tight hatch covers for ship cargo tanks, including oil and gas tightness, inspection access, copper alloy transmission components, observation hole arrangements, testing methods, and materials/options. citeturn0search0turn0search8

Quick Specifications

• Product type: Type B horizontal opening cargo oil tank hatch cover → oil-tight access cover for cargo oil tanks.
• Standard: JIS F 2320-2003 according to supplied data → applicable standard edition should be confirmed for new projects.
• Application: Oil cargo tank inspection and access → designed for oil-tight and gas-tight requirements.
• Nominal size range: 760 / 910 / 1220 mm from supplied data.
• Opening type: Hand wheel quick operation; closing type: Hinged → operation mechanism should follow approved drawing.
• Materials: Mild steel, stainless steel, duplex stainless steel, aluminium → final material depends on cargo environment and project specification.
• Packing materials: Neoprene, NBR, Hi-NBR, Viton, Teflon → select according to cargo compatibility and sealing requirement.
• Testing: Hydraulic pressure test, hose test, chalk test → final inspection scope follows project requirement.

Main Technical Parameters

Selection & Inquiry Guide

Step 1: Confirm JIS F 2320 Type B horizontal opening cargo oil tank hatch cover and nominal size according to cargo tank arrangement.

Step 2: Confirm application type: oil-tight, gas-tight, weather-tight or other project sealing requirement.

Step 3: Confirm cargo compatibility and gasket material: Neoprene, NBR, Hi-NBR, Viton, Teflon or other approved sealing material.

Step 4: Confirm opening arrangement, hinge direction, hand wheel mechanism, observation hole, fire copper mesh, filter, and maintenance access requirement.

Step 5: Confirm material grade: mild steel, stainless steel, duplex stainless steel, aluminium, and corrosion environment.

Step 6: Confirm testing requirement: hydraulic pressure test, hose test, chalk test, class inspection, certificate scope, quantity, delivery destination, and delivery time.

Structure

Horizontal hatch cover plate | Hinged opening mechanism | Hand wheel quick operation | Oil-tight sealing system | Observation hole with closing device | Fire copper mesh | Anti-erosion filter | Copper alloy transmission parts | Marine coating system

Sealing, Safety & Engineering Advantages

• The oil-tight structure helps maintain cargo tank sealing performance during normal ship operation and inspection access.
• Oil and gas tightness is a key design consideration. Gasket selection and sealing compression should match the cargo environment and approved drawing.
• Copper alloy transmission components help reduce spark risk associated with opening and closing mechanisms.
• The observation hole arrangement allows inspection function while maintaining oil-tight closing requirements.
• Testing methods such as hydraulic pressure test, hose test, and chalk test should be selected according to project specification and approval requirement.
• Material selection should consider cargo compatibility, corrosion environment, temperature, and maintenance requirements.

Custom Attributes

• Standard: JIS F 2320-2003 → oil-tight hatch cover for ship cargo tanks.
• Type: Type B horizontal opening → hinged closing arrangement according to supplied data.
• Nominal Size: 760 / 910 / 1220 → select according to cargo tank access requirement.
• Application Type: Oil-tight / gas-tight / weather-tight / water-tight options according to project requirement.
• Material: Mild steel, stainless steel, duplex stainless steel, aluminium → confirm final material before production.
• Seal Material: Neoprene, NBR, Hi-NBR, Viton, Teflon → select according to cargo and temperature condition.
• Operation: Hand wheel quick operation → mechanism details should follow approved drawing.
• Surface Treatment: Sa 2.5 blasting + epoxy primer, polished, galvanized, or customized finish.

How It Works

Hatch cover is positioned on cargo oil tank opening → Hinged cover is opened by hand wheel mechanism → Inspection personnel access the tank through the opening → Cover is closed and sealing system restores oil and gas tightness → Testing and inspection verify performance

Applications

Oil tankers | Chemical tankers when specified | Cargo oil tanks | Marine cargo tank inspection openings | Newbuilding and replacement projects

Certifications & Advantages

Certificates can be arranged according to project requirement, inspection scope, material traceability, and classification society approval procedure.

Certification: CCS, NK, BV, ABS, DNV, LR, KR, IRS, RS, RINA, CRS, Makers Test Certificate.

Drawing & Photos

FAQ

Q1: Is this hatch cover only for oil cargo tanks?

A1: The supplied data describes it mainly for oil cargo tank inspection and access. Final application should follow cargo type, vessel design, and approved project specification.

Q2: Why are copper alloy transmission parts used?

A2: Copper alloy transmission components are commonly used in oil-tight hatch cover mechanisms to reduce spark risk during operation.

Q3: What tests should be confirmed before delivery?

A3: Confirm hydraulic pressure test, hose test, chalk test, class inspection, material certificate, sealing material, and project-specific acceptance requirement.