Reconfigurable layouts, demountables, and crowd planning.
Events change risk, flow, and duty. Define triggers and pre-approved reconfigurations—portable elements, temporary gaps, and stewarding—so HVM bollard operation remains safe and clear (821, 825). Document safety overrides tied to interlocks (342, 355) and queue plans (215). Reset checks and comms templates feed commissioning/ops playbooks (544–547) and submission evidence (716, 938). Include one-sentence context that naturally links upward to the parent hubs (this section and the chapter hub). Add SIRA context with a link to SIRA Bollards (UAE) when relevant. Link installation pages only if helpful: What to Expect and Installation Guide.
Important: This is a general guide. For live projects we develop a tailored
Method Statement & Risk Assessment (MS/RA) and align with authority approvals (e.g., SIRA) where in scope.
239.1 When to plan event modes
Events altering flow or risk need pre-approved modes. HVM bollard states change to stewarded patterns; do not claim temporary devices as a crash rated bollard substitute (444).
Define event-mode triggers early: ticketed peaks, match-day surges, holiday sales, VIP convoys, or temporary works. Pre-authorize which lanes become portals and which stewarded gaps may open, with maximum durations and marshal ratios. Temporary devices manage people and cues; they are not a substitute for a crash-rated system. Tie event modes to the site’s modes of operation so controls, alarms, and logs remain consistent.
| Aspect | What matters | Where to verify |
|---|---|---|
| Performance | Certified barrier (bollard + footing) | Crash standards overview |
| Operations | Duty cycles, fail-state, safety devices | Installation Guide |
239.2 Rapid reconfiguration options
Use portable barriers, cones, and taped lanes. HVM bollard openings become portals; protect a removed crash rated bollard socket with keepered plates (626).
Plan a kit list for rapid mode switches: cones, A-frames, belt barriers, portable signs, and radio headsets. Where a removable unit is lifted, immediately fit a keepered opening plate and sign the hazard. For automatic arrays, define which lane sets are enabled and how they’re labelled in the HMI.
239.3 Temporary barriers & gaps
Set maximum temporary gap widths (232). HVM bollard intent persists; clearly mark where a crash rated bollard has been temporarily removed.
Temporary elements must maintain the clear-gap rule. Publish absolute gap limits and a Go/No-Go gauge procedure for stewards. If a unit is removed, barrier the socket, add a “Temporary Opening” board, and record the time, location, and certificate reference to reinstate quickly.
239.4 Wayfinding & stewarding
Brief marshals, deploy bold arrows and beacons (353, 357). HVM bollard portals get lane IDs; sign any nearby crash rated bollard heads to avoid trips.
Use simple beaconing, large arrows, and lane identifiers (A/B/C). Mark any low heads with a high-contrast band to reduce trips. A one-page marshal brief covers: crowd counts, escalation path, radio codes, signage & markings, and how to close a gap safely.
239.5 Queue management
Pre-size holding pens and bypass routes (215). HVM bollard cycle times may change (525); maintain a crash rated bollard backstop at the end of queues.
Create holding pens sized from peak rates and provide a clearly signed bypass route for accessibility and blue-light needs. If automatic lanes are used, check throughput vs. KPI (Ops/hour, cycle time). Always keep a certified crash-rated backstop beyond the last queue zig-zag.
239.6 Safety overrides
Define who can trigger EFO and temporary overrides (354). HVM bollard logs capture actions (544); record if a crash rated bollard was lifted.
Nominate roles who may operate EFO and temporary interlocks. In the PLC state machine, event overrides should be time-bound, logged to the operational dashboard, and revert automatically. Where removable units are lifted, log the serial and the exact keepered dimensions.
239.7 Documentation & comms
Issue event plans with maps and roles (521). HVM bollard states and timings are listed; note crash rated bollard removals and reinstatement times.
Publish a one-page runbook: key plan, marshal posts, lane IDs, signage list, and radio codes. Add a lane/state timetable and a printable checklist for gap checks every 30–60 minutes. For UAE projects, include a short note on alignment with SIRA submittals and keep a copy in the submission pack.
239.8 Reset-to-normal checks
Checklist to restore signage, gaps, and interlocks. HVM bollard modes revert; confirm each crash rated bollard is reseated and inspected (631–637).
After close, execute a reset-to-normal checklist: remove temporary barriers, restore default signs, confirm interlocks, and verify all removable units are reseated and torqued. Record photos and times in the performance & duty tests log and file under submission guidance.
239.9 Example event plan
Provide a mall sale-day plan and a stadium egress plan. HVM bollard configurations and any temporary crash rated bollard adjustments are shown.
Mall sale-day: Convert two frontage portals for goods delivery pre-open; during trading, restore defaults and open stewarded chicanes for pedestrians. Label lanes A/B; publish a 10-minute reset plan before closing. Stadium egress: For exit waves, hold vehicle lanes closed; deploy event chicanes to slow crowd flow, keep a blue-light bypass route, and reopen portals only after crowd density drops below threshold.
Related
External resources
- NPSA — Hostile Vehicle Mitigation guidance
- FEMA 426 / DHS — Reference manual
- ASIS — Security Risk Assessment Standard
239 Temporary / Event Modes — FAQ
Are temporary barriers a substitute for crash-rated bollards?
No. Temporary cones, tape, and lightweight fences guide people and drivers but do not provide certified impact resistance. Keep your crash-rated array intact wherever the risk remains and clearly sign any temporary openings.
Who can trigger EFO or event overrides?
Only nominated roles (e.g., security supervisor) should trigger EFO or overrides. Configure time-bound overrides in the PLC state machine, log every action to the operational dashboard, and include them in the post-event report.
How do we set safe temporary gap widths?
Publish a clear-gap limit derived from your spacing rules and provide a simple Go/No-Go gauge. Train marshals to measure during the event and to close or narrow any gap that exceeds the limit.
What should be in the reset-to-normal checklist?
Steps to remove temporary gear, restore default signs, verify interlocks, reseat any removable bollards, capture photo evidence, and update the event log. The checklist helps prevent unsafe “left in event mode” conditions.