2.1.1.1
Sealing System
Pneumatic sealing system shall be actuated by a single, air control valve,
operable from inside or outside. Outside control panel shall include a
pressure regulator and filter. Normal operation of the air control valve
shall unseal and allow manual operation of door within [15] [_____]
seconds. Each door shall have a separate control-valve system.
2.1.2
Sliding Type Door
**************************************************************************
NOTE: Ensure door openings and operating direction
are shown on the drawings.
**************************************************************************
Sliding HEMP shielded door shall be of the size and operating direction
indicated. Clear openings indicated shall not require dismantling of any
part of the door. Door shall be manually operable from either side, inside
or outside, with a maximum pull(force) of [156] [_____] Newton [35] [_____]
pounds to set HEMP shielded door in motion. Construct HEMP shielded door
face panels and frames from reinforced steel suitable for achieving the
specified SA. Construct frame from steel welded together to form a true
rectangular opening. In the sealed position, shielded door shall provide
minimum attenuation specified without any derating. Design door for long
life and reliability and shall not use RF gaskets, RF finger-stocks or
other sealing devices other than specified direct metal to metal contact.
Provide label attached to sliding door warning against painting of the
mating surfaces.
2.1.3
Electromagnetic Type Door (Swinging or Sliding)
Form HEMP seal by a solid metal to metal contact around the periphery of
the door frame. Materials at the contact area shall be compatible and
corrosion resistant. Only electromagnets (permanent magnet unacceptable)
shall provide contact force. Provide minimum of two (2) electromagnets.
When the electromagnets are energized, door leaf shall be magnetically
attracted to ensure a solid and continuous contact with the door frame.
When electromagnets are deenergized, the door leaf shall be free to [swing]
[slide]. The electromagnetic type HEMP shielded door shall use exclusively
electromagnets. Provide emergency power to the system. Design for
fail-safe operation. The door manufacturer shall provide HEMP filter(s)
with surge arrestors, card access system, control panel, alarm panel,
cipher or combination lock, any other hardwares if required and electrical
penetration. The door shall have minimum of three hinges.
2.1.4
Latching Type
Latching type HEMP shielded door shall have a three point minimum latching
mechanism to provide proper compressive force for the radio frequency(RF)
finger-stock. Operating handle shall not mechanically interfere with the
door frame when the HEMP shielded door is opened or closed. Force
necessary to operate the lever (handle) to latch and release (unlatch) the
HEMP shielded door shall not exceed [98] [_____] Newton [22] [_____] pounds.
HEMP shielded door handles fitted with lever opening, shall be designed so
that a force of [1112.5] [_____] Newton [250] [_____] pounds may be applied
at the free end in any direction without permanently deforming or damaging
operating mechanism or degrading SA by 5 [_____] dB or more. Door latches
and hinges shall be rated for a minimum of [10,000] [_____] cycles without
loss of SA and without adjustments.
SECTION 13095N
Page 11
Previous Page
