Containment Protocol Theta

Containment Protocol Theta is a specialized procedural framework governing the initial response to spatial and ontological anomalies exhibiting an elevated Selvage Constant. It operates as a primary-tier contingency plan, authorized under Emergency Protocol Theta and referenced by several clauses within the Seventh Concordance. The protocol outlines a graduated sequence of observational, diagnostic, and quarantine measures to be enacted within a specified radius from an anomaly's epicenter.

Origins and Authorization

Containment Protocol Theta was formally codified in the revised edition of the Emergency Powers Protocol following the 23rd Adjudication Cycle. It was developed by the Containment Directorate of Floor -17, Annex Theta in response to the perceived limitations of more general frameworks like Containment Protocol 7-Alpha when dealing with phenomena characterized by rapid local reality-constant degradation. Its authority is derived from Ordinance Theta-4, which empowers designated Librarians to enact "pre-emptive stasis" in sectors where the Selvage Constant exceeds 0.10 Sv/AU.

Procedural Phases

The protocol is divided into three sequential, non-discretionary phases.

Phase One: Vibroscopic Stabilization

Upon confirmation of a Selvage Constant reading above the 0.10 threshold, Phase One is automatically triggered. This mandates the immediate deployment of vibroscopic sensor arrays in a radial pattern as defined in Diagram Theta. The primary objective is to map the gradient of reality decay and establish a stable perimeter. All personnel within this initial radius, typically set at 50 spans, are evacuated under the provisions of Protocol 12-B.

Phase Two: Containment Field Calibration

If readings continue to escalate or exhibit a ΔSv (change in Selvage Constant) exceeding 5.2 Sv/AU per standard temporal unit, Phase Two is enacted. This involves the deployment and calibration of a containment field following the schematics held in Registry Theta-7. The field's aperture settings are directly correlated to the anomaly's spectral signature as recorded during Phase One. This phase often requires coordination with the Elaran Protocol for harmonic dampening.

Phase Three: Stasis-Field Quarantine

The final phase is a full quarantine, triggered either by a Selvage Constant surpassing 0.85 or by the manifestation of provisional Ambivalent Artefacts. The affected area is sealed under a stasis field, and the incident is reclassified for long-term management under the Selvage Protocol. Access is thereafter restricted to teams bearing a Protocol 17-B clearance.

Inter-Protocol Relationships

Containment Protocol Theta is not an isolated system. It functions as a feeder protocol to the more permanent Selvage Protocol. Furthermore, its measures for artifact isolation and passive monitoring are adapted from principles found in Containment Protocol 7-Alpha, specifically those outlined in Annex B. In cases where an anomaly is determined to be mobile, protocol guidance defers to the clauses within Containment Protocol Theta's own mobile-threat appendix, which supersedes the static-containment focus of Protocol 7-Alpha.

Notable Deployments and Controversies

The protocol was notably enacted during the Sub-basement Theta incident of Cycle 442, where its rapid implementation is credited with preventing a cascade failure into adjacent Sector Theta. However, its application remains a point of scholarly dispute. The Third Concordance, Clause 88, suggests a Selvage Constant threshold of 0.12 for Phase One initiation, directly contradicting the 0.10 standard mandated by the Seventh Concordance. This discrepancy has led to at least two documented instances of delayed response, detailed in Adjudicator's Ruling 88theta. A further operational debate concerns the protocol's relationship with Protocol 22-F; some archivists argue Theta should subsume 22-F's diagnostic routines, while others maintain they are distinct protocols for phenomenologically distinct anomaly classes.

Current Status and Archival Location

The full text of Containment Protocol Theta, including all annexes and calibration tables, is maintained in the Central Registry on Floor -17. Its operational guidelines are reviewed biannually by the Containment Directorate of Floor -17, Annex Theta. All amendments must be ratified under the emergency powers clause of the governing protocol, ensuring any changes preserve the core tri-phase structure established to manage the unique dangers posed by elevated Selvage Constants.