Editing Blast door

{{Status|Canon}}

[[File:H2A CairoStationBlastDoor.png|thumb|300px|A set of blast doors on the [[Orbital Defense Platform]] ''[[Cairo Station (station)|Cairo Station]]''.]]
A '''blast door''' is a type of heavy [[door]] designed to withstand large amounts of damage, especially by explosives, or to seal pressurized compartments on a starship in case of a [[hull breach]].

==Background==
Blast doors are an important safety measure for many starships or space stations. Blast doors are similar to [[airlock]]s in that they are used to seal off areas suffering, or have a strong possibility of suffering a breach and loss of atmosphere. They are distinguished by their interlocking sections that rise from the floor, and drop from the ceiling. The {{UNSCShip|Pillar of Autumn}}'s blast doors had large panels of what seem to be high-strength plexi-glass, since it can resist blasts of plasma from the handheld {{Pattern|Okarda'phaa|plasma rifle}}.<ref name="poa">'''Halo: Combat Evolved''', campaign level, ''[[The Pillar of Autumn (Halo: Combat Evolved level)|The Pillar of Autumn]]''</ref>

On the ''Pillar of Autumn'', the blast doors were also used to trap [[Covenant]] [[Naval boarding|boarding parties]]. This is an efficient way of cutting off boarding parties, as the doors are built to be extremely resilient to damage.{{Ref/Reuse|poa}}

Blast doors are also commonly used in blast shelters, [[military base]]s or other locations where heavy, secure doors are necessary. The city of [[New Mombasa]] had heavy blast doors in its tunnel systems and separating its city compartments, to seal off select areas in case of an emergency.<ref>'''Halo 3: ODST''', campaign level, ''[[Mombasa Streets]]''</ref>

The [[Forerunner]]s also constructed heavy blast doors within their most significant facilities, including the [[Control Room]]s and the tunnel systems in their vicinity on the [[Halo Array|Halo installations]].<ref>'''Halo: Combat Evolved''', campaign level ''[[Assault on the Control Room]]''</ref>

==Gallery==
<gallery>
File:01_cairostation_doors_large_2.png|A set of blast doors on ''Cairo Station'' in ''Halo 2''.
File:3 TsavoHW 2.jpg|A heavy blast door outside [[Crow's Nest (location)|Crow's Nest]].
File:PoA Crewmen.jpg|Blast Door in its open position (marked by the yellow and black markings on the floor)
File:HCE-BlastDoors-Screen1.jpg|One view of a set of closed blast doors on the {{UNSCShip|Pillar of Autumn}}.
File:HCE-BlastDoors-Screen2.jpg|Another view of a set of closed blast doors on the UNSC ''Pillar of Autumn''.
File:Door burn.JPG|Covenant boarders attempt to burn through a blast door on Cairo Station.
File:Streets_door_02.jpg|A blast door separating New Mombasa's compartmentalized sectors.
File:Coastal_highway_05.jpg|A blast door at New Mombasa's [[New Mombasa Waterfront Highway|Waterfront Highway]].
File:H5G - Hangar 2.png|A blast door in the [[War Games]] simulation [[Hangar]].
</gallery>

==List of appearances==
*''[[Halo: Combat Evolved]]'' {{1st}}
*''[[Halo 2]]''
*''[[Halo 3]]''
*''[[Halo 3: ODST]]''
*''[[Halo: Reach]]''
*''[[Halo: Evolutions - Essential Tales of the Halo Universe]]''
**''[[Palace Hotel]]'' {{Mo}}
*''[[Halo 4]]''
*''[[Halo: Initiation]]''
*''[[Halo 5: Guardians]]''

==Sources==
{{Ref/Sources}}

[[Category:Security technology]]