●ISO Certified · DEWA Registered Electrical Contractor

Plumbing & Fire Fighting

Public health and life-safety works under one package — water supply, drainage, sanitary fittings, fire fighting, sprinklers, fire alarm and suppression.

Plumbing and Fire Fighting works by Rejoiz Technical Services
Plumbing & Fire Fighting

Scope of Work

Our plumbing scope covers potable and irrigation water supply networks, drainage and storm water systems, sewage treatment plants, sanitary works and complete piping networks. Pipework is pressure tested, chlorinated and certified before the system is signed over.

On the life-safety side we install fire fighting, sprinkler, hydrant and hose reel systems, fire alarm and detection, and fire suppression — including the Inergen system at Shah Gas Development Package 10. Every system is witnessed with the consultant and the authority before handover.

  • Water supply networks
  • Drainage & storm water systems
  • Sewage treatment plant (STP)
  • Sanitary works
  • Complete piping networks
  • Fire fighting systems
  • Sprinkler systems
  • Hydrant & hose reel systems
  • Fire alarm works
  • Fire suppression systems
  • LPG systems
  • Solar hot water systems
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In Detail

Plumbing & Fire Systems We Install

Life-safety systems are tested and witnessed with the consultant and the relevant authority before the defects liability period begins.

Water & drainage

  • Potable and irrigation supply
  • Pumps, tanks and boosters
  • Soil, waste and vent drainage
  • Storm water and surface drainage
  • Sewage treatment plants
  • Sanitary ware and fittings

Fire fighting

  • Wet and dry riser systems
  • Sprinkler installations
  • Hydrants and hose reels
  • Fire pumps and tanks

Detection & suppression

  • Addressable fire alarm systems
  • Detectors, sounders and interfaces
  • Gas suppression (Inergen and similar)
  • Disabled toilet alarm systems
How We Work

From Tender to Defects Liability

The same five stages on every package, so you always know who holds the scope and what comes next.

01

Enquiry & Estimation

We review the drawings, specification and BOQ, raise the technical queries that matter, and price the package against a clear scope split.

02

Engineering & Approvals

Shop drawings, calculations, load schedules and material submittals prepared for consultant and authority approval before anything is ordered.

03

Procurement & Logistics

Approved brands only, ordered against the programme by our Procurement & Logistics Manager so long-lead items do not stop the sequence.

04

Installation & QA/QC

Directly employed foremen and technicians on site, with two QA/QC engineers and safety officers keeping inspection and test records current.

05

Commissioning & Handover

Systems tested, balanced and witnessed, then as-builts, O&M manuals, training and maintenance cover through the defects liability period.

Questions

Plumbing & Fire Fighting — Common Questions

Do you install sewage treatment plants?

Yes. Sewage treatment plant works were part of our scope on the FERTIL-2 non-process buildings package, alongside drainage, storm water and the full water supply network.

Which fire suppression systems have you delivered?

Fire fighting, sprinkler, hydrant and hose reel systems on most packages, plus gas suppression — the Inergen system at Shah Gas Development Package 10 and fire suppression at ENEC and Shah Gas Package 9.

Is the fire alarm scope included?

Yes. Fire alarm and detection is part of the same package, which keeps the interface with the fire fighting, HVAC smoke control and access control systems inside one contract.

Have a package to price? Send us the drawings.

Call our estimating team+971 55 114 1999
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