Special Risk Systems

Overview

We design and document special risk fire protection systems for high-hazard occupancies and process-critical areas: deluge, pre-action, foam, water spray, and (where applicable) gaseous suppression interfaces. Our packs align to ASIB, NFPA, and relevant SANS codes, and are compiled for consultant, authority and insurer approval.

What We Deliver

Basis-of-design and hazard definition
Deluge & pre-action valve room schematics
Nozzle/layout drawings for water spray/foam
Interlock logic (detection/trip interfaces)
Hydraulic demand and component schedules
Block plans, valve/signage schedules, as-builts

Technologies

Deluge (open head) & pre-action systems
Foam-water (chamber, bladder tank, proportioning)
Water spray (fixed pipe, ring main, monitors)
Interfaces to gaseous suppression (where required)
High-temp/harsh environment component selection

Compliance & Review

ASIB Rules & directives
NFPA 15 / 16 / 2001 (as applicable)
Relevant SANS & insurer requirements
Peer review and approval-ready documentation

Sample Output

Special risk system layout drawing sample

Representative sample only. Project packs include title blocks, revisions, and sign-offs.

Deluge Valve Schematic

Interlock logic diagrams provided where detection or suppression interfaces are required.

Typical Process

01. Scope & Data

Define hazards, media, exposures and shutdown requirements; collect drawings and utility data.

02. BOD & Layout

Issue basis-of-design; develop deluge/pre-action/spray/foam layouts with coordination.

03. Hydraulics

Calculate densities/pressures/flows; size mains, branches, nozzles, and foam hardware.

04. Documentation

Valve room schematics, logic, block plans, schedules, fabrication lists, as-builts.

05. Submission

Compile approval-ready sets for consultant, authority and insurer review.

06. Handover

Final sign-offs, revisions logged; electronic archive delivered.