Warfare Coordination, NWP 3-51.1 (formerly NWP
Different spaces aboard ship and different areas
within a shore activity usually have varying degrees of
security importance. The degree of security of each
area depends upon its purpose and the nature of the
work, information, equipment, or materials concerned.
Access to security areas must be controlled in a manner
consistent with the security level.
SANITIZING SITE AND EQUIPMENT
Sanitizing an area or equipment is done to make it
acceptable for access by personnel who are not cleared.
This is used to prevent unauthorized persons from
gaining access that would allow them to identify the
purpose or nature of your work, information, equipment
and materials concerned.
To meet this situation, each command should apply
differing protective measures commensurate with the
degree of security importance. Persons who have not
been cleared for access to the information contained
within the area, with appropriate approval, may be
admitted into an area, but they must be controlled by an
escort at all times. Follow guidelines set forth in the
Security Manual and local standard operating
A few of the basic requirements are listed below.
Remove, turn over, or place in drawers any
classified material that may be out on desks.
Replace any keying material in the safe and lock.
Cover any status boards showing conditions of
equipment, frequencies, systems, and so forth.
Cover all frequencies dialed into equipment.
Cover monitors or turn off monitor screens if
Do not conduct any work-related discussions.
At no time will the escort leave someone unattended.
The watch section or day working staff maybe required
to support the escort in cases where work is being
conducted by numerous uncleared personnel in more
than one area.
Designating security spaces as restricted areas
provides an effective and efficient means for a
command to restrict access and control movement. In
restricted areas, only those personnel whose duties
actually require access and who have been granted
appropriate security clearance are allowed freedom of
movement within the area.
Persons who have not been cleared for access to the
information contained within the area may, with
appropriate approval, be admitted into the area. While
in these spaces, however, uncleared persons must be
escorted, or other security procedures implemented to
prevent any unauthorized disclosure of classified
All designated restricted areas must have warning
signs posted at all entrances and exits. These areas must
have clearly defined perimeters and, if appropriate,
Restricted Area warning signs posted on fences and
Access to Spaces
The commanding officer or the officer in charge
over security spaces is responsible for controlling
access to these areas. Procedures should limit access to
security spaces only to those persons who have a need
to know. No one has a right to have access to classified
information or spaces based solely on clearance, rank,
Each command establishes a pass or badge
identification system to restrict access and to help
control movement. Control of movement within the
area is normally accomplished by requiring the display
or presentation of the pass or badge for that particular
Admission of visitors to communications spaces is
a topic of major concern to radiomen since access to
communications spaces under operating conditions
usually permits viewing of classified traffic and
equipment. A security badge does not automatically
mean that visitors have a need to know or that they
should be granted access. Admission to
communications spaces is granted only to personnel
whose names, rates/ranks, and clearance level appear
on the official access list.