D
Marine Doors
The watertight door form have hinge and
sliding type.
Use on ships watertight door has the
following three grade:
Grade 1 - hinged door; Grade 2- manual
sliding door; Grade 3-dynamic and manual sliding door.
(1) hinged watertight doors: requirements can
quickly open and close of door on both sides.
(2) sliding watertight doors: made of steel
plate. According to the sliding direction, horizontal type and vertical type;
according to the operation mode of manual operation and dynamic control.
(manual closing time less than 90 seconds, power closing time less than 60
seconds.)
The ship all watertight doors on the voyage
shall be kept closed, due to work needs during the voyage must be opened, and
it can be closed at any time. On bulkhead watertight doors, whether power
controlled or manually operated, where voyage in use, daily operation. During
voyage the sliding watertight doors should be inspected regularly, at least
once a week.
The entrance of above freeboard deck enclosed
superstructure wall of both ends require install weathertight doors.
(1) steel weathertight
Similar to its structure of steel hinged
watertight door, but the door is thin, the handle of door number fewer,
tightness poorer, only to ensure that the weathertight.
(2) wooden weathertight doors
The door with oak and teak material, divided
into hinged and sliding type, tightness is poor. The wall on both sides of cab,
all horizontal sliding type.
steel weathertight door structure Similar to
steel watertight door, but the door weight is slightly lighter, less wedge
handle and close packing press in shallow, which need to meet the corresponding
density test requirements to ensure in any storm impermeable; the use of wooden
door should also ensure its resistance to water wave impact. Generally used as
a freeboard deck room leading to open the cabin door and the furnace door,
storage room door, the pantry door and so on. That leads to the open air
kitchen, can be used to double leaf type door. When considering the appearance
of decoration, can use wooden door.
1. Close
doors and door frames,door entry pressure plate rubber mat depth should be not
more than 4mm,indentation should be uniform
2. Rolling
deduction and other activities annex hinge flexibility should be able to
rotate,turn off the light
3. The
airtight six experiment pressure 0.01Mpa
3, Marine Light
steel door
The structure of door is light, installed in
the storage room, no tightness require place at entrance.
4, Marine Fireproof
door
1, set up in the fire resistance separation
bulkhead, can achieve the same level of fire separation requirements of the
door.
2, installed in the fire bulkhead on the
ship, can be closed after the fire spread of the door.
Fireproof door is a kind of steel plate made
of door and door frame, and mosaic asbestos and other refractory materials of
fire prevention. Installed on the fire control area of the bulkhead, normally
open; when the fire occurs, the temperature rises to a certain value the door
can be closed automatically, or gate is arranged on the pinned magnetic device,
off the power door will automatically close. Fire doors in the channel are
required to be self closed, when the temperature exceeds 90 degrees can be automatically
shut down to prevent the spread of fire.
Fireproof doors are provided with fire
protection equipment on fire resistant doors. It has an equivalent fire
separation effect with the bulkhead. Ship construction codes are classified
into Grade A, grade B and grade C. Fire resistance of class a fire door is the
highest
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