What fire sprinkler repair involves
Fire sprinkler repair corrects a defect in a water-based fire protection system, whether found during a fire sprinkler inspection, reported by site staff or signaled at the alarm panel. The most common jobs are:
- Sprinkler replacement. A sprinkler that is leaking, corroded, physically damaged, missing fluid in its glass bulb, painted by anyone other than the manufacturer, or installed in the wrong orientation is replaced. A loaded sprinkler is replaced, although many authorities allow dust to be cleaned off with compressed air or a vacuum that does not touch the sprinkler. Each replacement matches the type and temperature rating of the original.
- Leaks at pipe and fittings. Weeping joints, corroded fittings and damaged branch lines.
- Valve work. Control valves that do not operate fully, leaking check valves, pressure reducing valves that fail their flow tests, and dry pipe valves that need internal cleaning and parts replaced after a trip test.
- Gauges and alarm devices. Gauges that are unreadable or out of tolerance, and waterflow or tamper switches that fail to signal the alarm panel.
- Freeze damage. Split pipe or fittings in unheated areas, and water trapped in dry pipe systems that should have drained before cold weather.
- Obstructions and clearance. Stock, fixtures or ceiling work placed too close to sprinklers, and sprinklers that need guards where they can be struck.
Most repairs require closing a control valve and draining the affected part of the system. While that happens, the area is unprotected, so the work is handled as an impairment.
Codes, standards and repair requirements
Fire codes are adopted locally, and the fire code official, or authority having jurisdiction, for each location decides which editions apply, who may perform the work and what must be reported. The points below are reference points, not legal advice.
- Keep the system working. Fire codes generally require fire protection systems to be kept in working order and repaired when defective. For sprinkler systems installed to meet an OSHA standard, 29 CFR 1910.159 requires the employer to properly maintain the system, protect sprinklers from mechanical damage, and keep at least 18 inches of vertical clearance between sprinklers and material below.
- NFPA 25. NFPA 25 covers inspection, testing and maintenance of water-based fire protection systems. Under the 2011 edition, as summarized by the Minnesota Department of Health, the annual inspection lists the sprinkler conditions that require replacement (5.2.1), each building keeps at least two spare sprinklers of each type and temperature rating with a wrench for each type (5.4.1.4 and 5.4.1.5), and gauges more than 3 percent off at full scale are recalibrated or replaced (5.3.2). Where a sample of aged sprinklers is tested and one fails, all sprinklers in the area it represents are replaced (5.3.1.3). A dry pipe valve receives a full flow trip test every 3 years or whenever the system is altered (13.4.4.2.2.2), so a repair can bring that test forward.
- Critical and non-critical deficiencies. As Facilitiesnet reports, a critical deficiency affects safety and must be fixed immediately. A non-critical deficiency leaves the building short of the code or standard without compromising system performance.
- Impairments. Under Section F901.7 of the fire code as adopted in Syracuse, New York, the fire department and fire code official are notified immediately when a required system is out of service, the owner assigns an impairment coordinator, the system is tagged, and the fire code official can require evacuation or an approved fire watch. Planned impairments are authorized in advance, with the insurer and alarm company notified, and the same parties are told when tested protection is restored.
- Monitoring. Model codes require sprinkler control valves and waterflow to be supervised by a listed fire alarm control unit, according to the National Fire Sprinkler Association. Closing a valve or draining a system sends a signal, so the monitoring company is placed on test before work starts.
- Water supply. OSHA 1910.159(c)(4) requires an auxiliary water supply or equivalent protection while the automatic water supply is out of service, except for systems of 20 or fewer sprinklers.
Preventive maintenance schedule for fire sprinkler systems
Many repair calls trace back to a condition a planned visit would have found, such as a failing gauge or a sprinkler painted during a refit. Planned maintenance reduces emergency leak calls, extends equipment life, and leaves the dated records that fire officials and insurers ask for.
| Task | Recommended frequency | Basis |
|---|---|---|
| Check control valves are accessible, open, sealed, locked or supervised, not leaking and identified by signage, and that gauges read normal pressure | Monthly | Valves: NFPA 25 (2011), 13.3.2, as summarized by the Minnesota Department of Health. Gauges: Facility First program default, adjusted per site |
| Inspect the hydraulic design sign on the riser for attachment and legibility | Quarterly | NFPA 25 (2011), 5.2.6, as summarized by the Minnesota Department of Health |
| Inspect every sprinkler for leakage, corrosion, damage, paint and loading, and check the spare sprinkler cabinet | Annually | NFPA 25 (2011), 5.2.1 and 5.4.1.4 |
| Main drain flow test on each system | Annually | OSHA 29 CFR 1910.159(c)(2) |
| Open the inspector’s test valve to confirm the system operates | At least every 2 years | OSHA 29 CFR 1910.159(c)(2) |
| Test antifreeze solution, where an antifreeze system is installed | Annually | NFPA 25 (2011), as summarized by the Minnesota Department of Health |
| Partial flow test of pressure reducing valves; full flow test | Annually; every 5 years | NFPA 25 (2011), 13.5.1.2 and 13.5.1.3 |
| Inspect and clean the dry pipe valve interior; full flow trip test | Annually at the trip test; every 3 years or when the system is altered | NFPA 25 (2011), 13.4.4.1.5 and 13.4.4.2.2.2 |
| Internal inspection of piping and check valves; replace or test gauges | Every 5 years | NFPA 25 (2011), 14.2.1, 13.4.2.1 and 5.3.2 |
| Check storage clearance below sprinklers | Monthly, and after every reset or remodel | Clearance: OSHA 29 CFR 1910.159(c)(10). Frequency: Facility First program default, adjusted per site |
The authority having jurisdiction, the manufacturer and the property’s insurer can require more frequent service, and each location’s schedule is set in its program and recorded on every visit. Later editions of NFPA 25 changed some intervals, so the edition adopted for each location governs.
Signs a sprinkler system needs repair
- Water at a sprinkler, fitting or riser, or rust stains on ceiling tiles
- A sprinkler that is bent, painted, corroded or missing fluid in its bulb
- A gauge reading zero, outside its normal range or unreadable
- A dry pipe system that keeps losing air or trips without a fire
- Repeated supervisory or trouble signals at the alarm panel
- Open deficiencies on the last inspection report
- Stock stacked within 18 inches of sprinklers
Records to keep
- The repair report for each job: deficiency, cause, parts replaced, sprinkler type and temperature rating, provider and date
- Impairment records: authorization, notifications, tags, fire watch logs and the restoration date
- Test results after the repair, including any trip test brought forward
- The inspection report that listed the deficiency, marked with the date it was corrected
- Acceptance test dates for new or altered systems, which OSHA 1910.159(c)(3) requires to be recorded where it applies
- Before and after photos of the riser, valves and repaired area
How Facility First runs fire sprinkler repair across a portfolio
Facility First manages the work. Licensed sprinkler contractors in each location’s market perform it.
- Request. A deficiency from an inspection report, a call from site staff or an alarm signal is logged with photos and the location’s system details.
- Triage. Facility First sets priority by whether system performance is affected and confirms whether the repair will impair the system.
- Impairment planning. The impairment coordinator, the monitoring company, the fire department and the insurer are notified as the jurisdiction requires. Where a failure leaves a location unsecured, McCray can post an officer until the work is complete. See Security by McCray.
- Dispatch. A vetted provider holding the licenses the jurisdiction requires receives the work order, with the system type and prior reports.
- Repair and restoration. The provider makes the repair, refills and tests the system, and the monitoring company is taken off test.
- Close-out, verification and invoice. Photos and the repair report are filed to the location’s record and checked against the request. Work within the client’s approval limits proceeds, and larger repairs are quoted first. See what NTE means. Every location is invoiced in one format.
What affects the cost of fire sprinkler repair
- Number and type of sprinklers, and whether a sample failure requires replacing a whole area
- System type: wet, dry, preaction, deluge or antifreeze
- Draining and refilling time, and how much of the system is impaired
- Valve parts and trip tests triggered by the repair
- Ceiling height and lift access
- After-hours scheduling, monitoring coordination and fire watch
- Water damage clean-up after a leak
Fire sprinkler repair for retail stores, restaurants and offices
Retail stores. Fixture resets bring clearance problems and struck sprinklers. Repairs that drain the system are scheduled before opening, and in shopping centers the landlord may control the riser.
Restaurants. Grease and steam load sprinklers near kitchens. Sprinklers inside walk-in freezers sit in below-freezing air, and a freezer leak or repair can be coordinated with walk-in freezer repair.
Offices. In multi-tenant buildings the landlord usually controls valves and impairments, and tenant fit-out work is a frequent source of painted or obstructed sprinklers. The lease decides who pays.
Frequently asked questions
How often should a fire sprinkler system be maintained to avoid repairs?
Under the 2011 edition of NFPA 25, control valves are inspected monthly, sprinklers annually, and gauges and internal piping every 5 years, and OSHA requires an annual main drain test where it applies. Facility First programs add monthly gauge checks, and the edition adopted locally governs.
Can a painted sprinkler head be cleaned instead of replaced?
No. Under NFPA 25, a sprinkler painted by anyone other than the manufacturer is replaced. A sprinkler loaded with dust may be cleaned where the authority having jurisdiction allows it.
Does the sprinkler system have to be shut off for a repair?
Most repairs require closing a control valve and draining part of the system. That is an impairment, so notifications, tags and any required fire watch are arranged before work starts.
Who can repair a fire sprinkler system?
The authority having jurisdiction sets licensing rules. Facility First dispatches sprinkler contractors that hold the licenses each location’s jurisdiction requires.
What happens after a sprinkler leak?
The affected section is isolated, the cause is found and repaired, the system is refilled and tested, and the fire department, insurer and monitoring company are told protection is restored where the code requires it.
Sources
- OSHA: 29 CFR 1910.159, Automatic sprinkler systems
- Minnesota Department of Health: Maintenance and Testing of Fire Sprinkler Systems (NFPA 25, 2011 edition)
- NFPA: NFPA 25 Standard Development
- City of Syracuse Fire Prevention Bureau: Fire Protection Systems Out of Service, Code Requirements
- National Fire Sprinkler Association: Supervising Station Alarm Systems and Sprinkler Monitoring
- Facilitiesnet: Fire Protection Systems Maintenance Needs Every Facility Manager Should Know