Control statement
Position system components within the facility to minimize potential damage from [Organization-defined: physical and environmental hazards] and to minimize the opportunity for unauthorized access.
Discussion
Physical and environmental hazards include floods, fires, tornadoes, earthquakes, hurricanes, terrorism, vandalism, an electromagnetic pulse, electrical interference, and other forms of incoming electromagnetic radiation. Organizations consider the location of entry points where unauthorized individuals, while not being granted access, might nonetheless be near systems. Such proximity can increase the risk of unauthorized access to organizational communications using wireless packet sniffers or microphones, or unauthorized disclosure of information.
Organization-defined parameters
These values must be resolved through the organization’s tailoring and governance process. Bracketed parameter references in the control text identify where a decision is required.
From control text to operational evidence
Use Location of System Components as a testable risk decision. Translate the official statement into accountable people, repeatable processes, configured technology, and evidence that demonstrates the outcome over time. In this family, pay particular attention to physical access, facility protection, environmental safeguards, and visitor accountability.
Implementation workflow
- Define the control boundary, responsible owner, inherited portions, and systems or processes in scope.
- Resolve each organization-defined parameter before declaring the control implemented.
- Document how the implementation satisfies every clause of the official control statement.
- Collect evidence as a normal byproduct of operation rather than only before an assessment.
- Review exceptions, changes, and monitoring results on a risk-based cadence.
Evidence examples
- badge and visitor logs
- physical access reviews
- facility diagrams and sensor records
- environmental and power test results
Common failure patterns
- logical security assumptions invalidated by physical access
- tailgating and visitor exceptions normalized
- critical infrastructure not included in access reviews
- environmental alarms not integrated into response
Questions practitioners should ask
- What risk decision is this control intended to support in this system?
- Which parts are implemented locally, inherited, shared, or not applicable—and what evidence supports that decision?
- Do the documented narrative, deployed configuration, operating process, and collected evidence agree?
- What event or threshold requires the implementation to be reviewed or changed?
Assessment objectives and methods
Show the assessment objective
system components are positioned within the facility to minimize potential damage from [Organization-defined: physical and environmental hazards] and to minimize the opportunity for unauthorized access.
Examine
- Physical and environmental protection policy
- procedures addressing the positioning of system components
- documentation providing the location and position of system components within the facility
- locations housing system components within the facility
- list of physical and environmental hazards with the potential to damage system components within the facility
- system security plan
- other relevant documents or records
Interview
- Organizational personnel with responsibilities for positioning system components
- organizational personnel with information security responsibilities
Test
- Organizational processes for positioning system components
Related controls
These relationships come from the official OSCAL catalog. They indicate useful dependencies or context, not automatic inheritance or equivalence.
Control enhancements
Enhancements add specificity, strength, or scope to the base control. Baseline badges show explicit selections in the official SP 800-53B OSCAL profiles.
PE-18(1) — Facility Site
This enhancement is marked withdrawn in the official OSCAL catalog. Related-control metadata below may identify where its intent was incorporated.
Authoritative sources
Bare Metal Cyber is an independent educational publisher and is not affiliated with or endorsed by NIST. Official control requirements and interpretations remain with NIST and the responsible authorizing organization.