Field Service Report · Recovery → Escalated
FSR-2089-0418 — Constrictor Recovery (Escalated)
Attempted recovery of a predatory GCL-3 constrictor cultivar (UF-30912) from a tidal reclamation site. Chilled-CO₂ quiescence was not applied; during severance the specimen reacted with rapid constriction and a containment event was declared, escalating to the emergency breach procedure. Near-miss; no personnel seriously harmed.
Engagement classification — ESCALATED. Aggressive predatory GCL-3 recovery. Two-person rule and field-grade PPE applied per VC-SOP-0204 §5 (GCL-3 subset). Quiescence was not performed (chilled-CO₂ wand failed to stage — see §3); severance attempted on an active specimen. Specimen constricted violently, a containment event was declared, and the engagement was escalated to VC-SOP-0401.
1. Site & Conditions
| Field | Entry |
|---|---|
| Site name / client | Estuary Reclamation Site (decommissioned tidal works, GreenWorld remediation lease) |
| Location / access | Mudflat reclamation channel; access via single causeway, tide-dependent egress window. Soft footing. |
| Engagement type | Recovery → Escalated |
| Ambient temp / RH | 29 °C / 84 %RH; warm, humid — elevated specimen metabolism |
| Hazards on arrival | Specimen had anchored across a sluice frame and a mooring post; principal runner partially submerged at high water. |
| Public proximity | None — restricted lease site. Causeway egress constrained by tide. |
2. Specimen Identification
| Field | Entry |
|---|---|
| Common name | Tidemaw Constrictor (engineered predatory constrictor cultivar) |
| Cultivar / accession | UF-30912 — escaped propagation from reclamation seed-bank trial |
| Assessed GCL grade | GCL-3 (rapid constriction + active prey-strike; no toxin; no aerial dispersal) |
| Approx. size | ~8.1 m principal runner, 17 lateral tendrils, est. 23 kg wet mass |
| Observed hazards | Thigmotropic prey-strike; baseline constriction force 410 N on test rod, peaking far higher under stimulus (see §4) |
| Provenance | Confirmed — genetic match to reclamation trial lot via field PhytoSense swab |
3. Work Performed
- Established work zone on the causeway; briefed two-person roles: Hemlock handler, Sanguine observer with severance tool and dispatch comms. Logged tide window.
- Donned cut-resistant gauntlets, arm guards, eye protection, and dosimeters per VC-SOP-0301 GCL-3 field subset. PhytoSense handset confirmed (cal age 5 d).
- Captured arrival readings (Section 4). Specimen sap-flow and turgor elevated — consistent with warm-water active phase.
- Attempted to stage the chilled-CO₂ quiescence wand; both staged cartridges read empty/failed pressure-check on site. No serviceable quiescence means was available. Under tide-window pressure, the crew elected to proceed with severance on the active specimen — a deviation from quiescence-before-severance.
- Began distal tendril severance from the sluice-frame anchor. On the third cut the specimen registered the disturbance and initiated a rapid prey-strike, coiling on the handler's forearm gauntlet and the severance tool.
- Constriction force spiked past test-rod range; the gauntlet arm guard took the load. Observer called a containment event and triggered VC-SOP-0401 at 14:36; handler executed the emergency-release cut and withdrew to the causeway.
- Per VC-SOP-0401, the zone was hard-cordoned, dispatch and Containment scrambled a follow-on crew, and no further severance was attempted. Specimen left anchored and contained-in-place pending a quiescence-equipped re-dispatch.
- Crew decon on egress before tide closed the causeway; dosimeters clear; handler assessed — superficial gauntlet-transferred bruising only, no penetrating injury.
4. Readings Captured
| Metric | Unit | Nominal Band | Arrival | At Event |
|---|---|---|---|---|
| Canopy Vitality Index | % | ≥ 90 | 98.3 | — |
| Sap-Flow Rate | g/h | 40–70 (species) | 104 | 131 (strike surge) |
| Turgor Pressure | kPa | 120–180 | 224 | 271 (strike surge) |
| Crown Tissue Temp | °C | handling < 9 | 27.4 | 27.1 (no quiescence) |
| Constriction Force (test rod) | N | — | 410 | > 900 (over-range) |
| VOC / Toxin Index | ppb | < OEL | 0 (non-toxic) | 0 |
| Personnel Dosimeter | — | clear | clear | clear |
Quiescence AppliedNowand failed to stage
Peak Constriction>900 Nover test-rod range
Containment EventDeclared14:36 · VC-SOP-0401
Personnel InjuryNear-misssuperficial only
5. Parts & Consumables
| Item | Part / Lot | Qty | Notes |
|---|---|---|---|
| Chilled-CO₂ quiescence cartridge | QW-CO2-094 | 2 | Both failed pressure-check — not usable |
| Cut-resistant gauntlet pair | PPE-GTL-3 | 2 | Load-bearing pair quarantined for inspection |
| Emergency severance tool | SEV-EMG-2 | 1 | Used for emergency-release cut |
| Hard-cordon marker kit | CRD-HARD-3 | 1 | VC-SOP-0401 perimeter |
6. Containment Actions
- PPE: cut-resistant gauntlets, arm guards, eye protection, dosimeter (GCL-3 field subset)
- Containment method: quiescence NOT applied — cartridges failed pressure-check; severance attempted active
- Two-person rule observed: Yes — handler + observer; observer triggered the event call
- Emergency procedure: VC-SOP-0401 invoked at 14:36; emergency-release cut executed; hard cordon set
- Field dispersal control: specimen left anchored, contained-in-place; no fragment sweep attempted (deferred to re-dispatch)
- Decon on egress: tools and PPE field-deconned before tide closure; load-bearing gauntlets quarantined
7. Outcome & Disposition
| Outcome | Escalated |
| Specimen disposition | Recovery aborted; specimen contained-in-place under hard cordon pending quiescence-equipped re-dispatch. No specimen removed. |
| Site left in condition | Hard cordon maintained; causeway access controlled; follow-on crew scrambled by Containment. |
| Emergency procedure triggered? | Yes — escalated to VC-SOP-0401 at 14:36. |
| Personnel status | Near-miss; handler superficial gauntlet-transferred bruising, no penetrating injury; medically cleared on egress. |
8. Follow-Up Actions
- Quiescence-equipped re-dispatch to complete recovery (minimum 2 verified cartridges) — owner: S. Aralia — due 2089-07-22. Done
- Root-cause the QW-CO2-094 cartridge failures (lot recall / pressure-check before staging) — owner: D. Hemlock — due 2089-07-26. Done
- Quarantine inspection of load-bearing gauntlet pair PPE-GTL-3 — owner: Containment — due 2089-07-23. Done
- SOP revision request: make quiescence-before-severance mandatory for constrictor cultivars — owner: S. Aralia — due 2089-08-02. Done
9. Lessons Learned
Lesson — quiescence before severance must be MANDATORY for constrictor cultivars. The single causal factor in this near-miss was attempting severance on an active specimen because no serviceable chilled-CO₂ quiescence was available. The specimen surged from a 410 N baseline to over-range (>900 N) prey-strike in seconds; only the gauntlet arm guard prevented injury. Proceeding under tide-window pressure with failed cartridges was the wrong call. Recommendation: (1) quiescence is a hard gate — no severance on a constrictor without verified cartridges on site; (2) pressure-check all QW-CO2 cartridges at staging, not at the specimen. This finding directly motivated the quiescence mandate later applied as standard practice in FSR-2089-0442. Submitted to Dispatch Lead for VC-SOP-0501 revision.
10. Signatures
| Role | Name | Date |
|---|---|---|
| Field Technician (Lead) | D. Hemlock | 2089-07-19 |
| Field Observer | K. Sanguine | 2089-07-19 |
| Dispatch Lead | S. Aralia | 2089-07-20 |
| Containment Officer | D. Hemlock | 2089-07-20 |