| RAMSPROZONE | METHOD STATEMENT — INSTALLATION, TESTING & COMMISSIONING OF FIRE FIGHTING SPRINKLER SYSTEM |
|---|---|
| Company / Contractor Name: [ENTER COMPANY / CONTRACTOR NAME] | Doc No: [ENTER DOC NO.] |
| DOCUMENT DETAILS | |||
|---|---|---|---|
| Document No.: | [ENTER DOCUMENT NUMBER] | Revision: | 00 |
| Project Location: | [ENTER PROJECT LOCATION] | Project Name: | [ENTER PROJECT NAME] |
| Project No.: | [ENTER PROJECT NUMBER] | Date: | [DD/MM/YYYY] |
| Prepared By: | [NAME / DESIGNATION] | Reviewed By: | [NAME / DESIGNATION] |
| Approved By: | [NAME / DESIGNATION] | Client / Owner: | [ENTER CLIENT / OWNER NAME] |
| Main Contractor: | [ENTER MAIN CONTRACTOR NAME] | Sub-Contractor: | [ENTER SUB-CONTRACTOR NAME] |
| Applicable Standards: | NFPA 13 — Standard for the Installation of Sprinkler Systems; EN 12845 — Fixed Firefighting Systems — Automatic Sprinkler Systems; ISO 45001:2018; ISO 9001:2015 | ||
| TEMPLATE NOTE: All fields in [RED BRACKETS / ITALIC] are placeholders. Replace each with your project-specific information before issue or use. Provided free of charge by RAMSPROZONE for global HSE professionals. | |||
TABLE OF CONTENTS
1. PURPOSE
This Method Statement establishes the minimum technical requirements, step-by-step work procedures, health and safety controls, and quality assurance measures governing the installation, testing, and commissioning of the fire fighting sprinkler system at [ENTER PROJECT NAME], located at [ENTER PROJECT LOCATION].
The document provides guidance to all directly employed personnel and approved sub-contractors responsible for executing the works, ensuring that installation activities are carried out in strict accordance with NFPA 13 (Standard for the Installation of Sprinkler Systems), EN 12845 (Fixed Firefighting Systems — Automatic Sprinkler Systems), ISO 45001:2018, ISO 9001:2015, and the requirements of [LOCAL AUTHORITY / REGULATORY BODY NAME].
This document must be read in conjunction with the approved construction and shop drawings, the project specifications, the Inspection and Test Plan (ITP), the Risk Assessment, and any Permit to Work (PTW) requirements applicable to the scope of works. In the event of a conflict, the most stringent requirement shall prevail and the Site Engineer shall be notified immediately.
2. SCOPE OF WORK
This Method Statement covers, but is not limited to, the following activities:
- Mobilisation of plant, tools, equipment, and workforce to site.
- Survey and verification of the installation areas against approved drawings prior to commencement.
- Supply, handling, and storage of all sprinkler system materials and components.
- Setting out and marking of pipe routes, hanger/support locations, and sprinkler head positions in accordance with approved drawings.
- Fabrication, pre-assembly, and installation of galvanised steel / black steel / CPVC pipework (as specified) including all fittings, reducers, and branch connections.
- Installation of pipe hangers, trapeze supports, seismic bracing, and restraint systems per NFPA 13 requirements.
- Installation of alarm check valves, gate valves, butterfly valves, pressure gauges, flow switches, and drain connections.
- Installation and positioning of sprinkler heads — upright, pendant, sidewall, or concealed — as specified on approved drawings.
- Connection to the fire water supply main, pump set, and break tank as applicable.
- Hydraulic pressure testing of all pipework sections.
- Flushing of pipework prior to sprinkler head installation.
- Functional testing and commissioning of the complete sprinkler system, including flow testing and alarm verification.
- Coordination and interface with civil, structural, electrical, and HVAC trades regarding penetrations, sleeves, and ceiling works.
- Handover documentation, as-built drawings, and O&M manual compilation.
3. RESPONSIBILITIES
| Role / Designation | Responsibilities |
|---|---|
| Site Engineer | Overall technical supervision and coordination of all sprinkler installation activities; interpretation of approved drawings; liaison with the Client and main contractor; review and approval of inspection records; ensuring compliance with this Method Statement and applicable standards. |
| Site Foreman / Supervisor (Fire Fighting Sprinkler) | Direct supervision of the sprinkler installation workforce; conducting daily toolbox talks; ensuring correct materials and tools are available; monitoring workmanship quality in real time; reporting non-conformances to the Site Engineer; enforcing PPE compliance on the work front. |
| HSE Officer | Implementation and monitoring of the project HSE Plan; conducting and documenting risk assessments and toolbox talks; issuing and closing Permits to Work; investigating and reporting incidents; stopping work in the event of an imminent danger; maintaining emergency preparedness on site. |
| QA/QC Inspector | Execution of the Inspection and Test Plan (ITP); inspection and documentation of all hold and witness points; review of material delivery dockets against approved submittals; recording and controlling non-conformance reports (NCRs); compilation of quality dossiers for handover. |
Additional roles may be added as required per [PROJECT / COMPANY ORGANISATIONAL CHART REFERENCE].
4. REQUIRED TOOLS & EQUIPMENT
- Pipe threading machine (electric, with thread-cutting dies — 15 mm to 150 mm range)
- Pipe cutting machine / grinder with appropriate cutting discs
- Pipe bending machine (hydraulic, where required)
- Groove rolling machine (Victaulic or equivalent, where grooved joints are specified)
- Electric drill and hammer drill with HSS and SDS drill bits
- Hydraulic pressure test pump (hand-operated or electric, calibrated — min. 50 bar capacity)
- Calibrated pressure gauges (minimum two, one at pump, one at remote test point)
- Calibrated torque wrenches
- Pipe wrench sets (various sizes)
- Spirit levels, laser level / total station for alignment and setting out
- Thread sealant applicator and PTFE tape dispenser
- Sprinkler head installation wrench (dedicated, type-specific — non-adjustable)
- Scaffolding, mobile elevated work platforms (MEWPs) or approved stepladders
- Portable generator (where mains power is unavailable)
- Hand tools: spanners, screwdrivers, pliers, pipe cutters, tape measure, chalk line
- PPE dispensing station and first aid kit
- Fire extinguisher (minimum 9 kg dry powder at work front)
5. MATERIALS
All materials shall be in strict accordance with the approved material submittals and project specifications. No substitutions shall be made without written approval from the Client and/or Engineer.
- Schedule 10 / Schedule 40 steel pipe (black or galvanised as specified), conforming to ASTM A795 / EN 10255
- CPVC pipe and fittings (where applicable in concealed ceiling areas), FM-approved and conforming to NFPA 13
- Threaded malleable iron fittings (ASTM A197 / BS EN 1562)
- Grooved mechanical couplings and fittings (FM/UL listed)
- Alarm check valve assembly (FM/UL listed, complete with retarding chamber)
- Gate valves, OS&Y (outside screw and yoke) butterfly valves — FM/UL listed
- Pressure gauges (glycerin-filled, 0–20 bar minimum range, calibrated)
- Water flow indicators / flow switches (FM/UL listed)
- Sprinkler heads — upright, pendant, sidewall, concealed type — as per design (FM/UL listed, temperature rated per area classification)
- Sprinkler head guards and escutcheon plates (where required)
- Pipe hangers, riser clamps, trapeze assemblies, and seismic sway brace assemblies
- Fire-rated pipe sleeves and intumescent pipe collars (for penetrations through fire-rated elements)
- PTFE thread seal tape and approved anaerobic thread sealant
- Drain valves, test and drain assemblies
- Flexible sprinkler hose drops (where specified for concealed installations)
Reference: NFPA 13, EN 12845, and approved material submittal register — Ref: [ENTER MATERIAL SUBMITTAL REGISTER REFERENCE].
6. HANDLING & STORAGE
6.1 Fabrication / Pre-assembly
Where pipe spools and subassemblies are prefabricated off-site or in a designated fabrication area, all fabricated spools shall be clearly tagged with spool numbers corresponding to approved isometric/shop drawings. Threaded ends shall be protected with plastic end caps. Completed spools shall be inspected by the QA/QC Inspector prior to transfer to the installation area.
6.2 Receipt & Inspection at Site
Upon delivery to site, all materials shall be inspected by the QA/QC Inspector and Site Foreman against the approved delivery docket and material submittal. The following shall be verified:
- Material identification marks, FM/UL listing labels, and heat codes match approved submittals.
- Sprinkler heads are of the correct type, temperature rating, and K-factor as specified.
- Pipe dimensions, wall thickness, and material grade comply with specifications.
- No physical damage, corrosion, dents, or deformation are present.
- Valves and alarm equipment are accompanied by manufacturer's test certificates.
Non-conforming or damaged materials shall be segregated, clearly labelled "REJECTED — DO NOT USE," and removed from site without delay.
6.3 Unloading, Shifting & Storage
- Pipes shall be offloaded using appropriate lifting slings or pipe racks — never dragged across the ground.
- Pipes shall be stored horizontally on timber bearers at minimum 150 mm above ground, with end caps in place to prevent ingress of debris and moisture.
- Sprinkler heads shall be stored in their original manufacturer's packaging in a cool, dry, sheltered location away from direct sunlight and sources of heat. They must not be stored in areas where their temperature rating could be compromised.
- Valves shall be stored upright with end protection and kept free from dirt and moisture.
- All materials shall be stored in a designated, clearly signed secure area. Segregation between approved and rejected materials shall be maintained at all times.
7. INSTALLATION / WORK PROCEDURE
7.1 Pre-Commencement Checks & Preparation
7.1.1 Confirm that all required permits (Permit to Work, hot work permit if applicable) have been issued and are valid prior to commencing any work.
7.1.2 Conduct a daily toolbox talk (TBT) with all personnel on site. Address the specific activities planned for the day, associated hazards, and required controls. Record attendance on the designated TBT form.
7.1.3 Verify that the approved construction drawings (latest revision) are available on site and that any comments from the Engineer's review have been incorporated.
7.1.4 Inspect the work area for the following: adequate lighting, clear access routes, absence of clutter and trip hazards, and confirmed overhead clearances for pipe routes.
7.1.5 Confirm that all civil and structural works — including builder's work openings, pipe sleeves, equipment plinths, and ceiling installation — are complete or sufficiently advanced to permit sprinkler installation.
7.1.6 Check that all scaffolding, MEWPs, and working-at-height equipment have been inspected and tagged as safe for use.
7.2 Pipe Installation
7.2.1 Set out and mark pipe centreline routes, hanger positions, and branch locations on ceilings and walls using a chalk line or laser level. Cross-reference with approved drawings at every stage.
7.2.2 Install pipe hangers and supports at intervals not exceeding those specified in NFPA 13 and the approved design (typically 3.7 m for 25 mm pipe; refer to design for all sizes). All hangers shall be independently supported from the building structure — not from mechanical, electrical, or other services.
7.2.3 Cut pipes to required lengths using a pipe-cutting machine. Ensure cut ends are square, free of burrs, and deburred prior to threading or grooving.
7.2.4 Thread all pipe ends using a calibrated pipe-threading machine. Threads shall conform to ANSI/ASME B1.20.1. Apply PTFE tape or approved anaerobic sealant uniformly to the male thread only — never to the first two threads to prevent contamination of the system.
7.2.5 For grooved pipe joints, roll grooves using a manufacturer-approved groove rolling machine. Inspect groove dimensions against the coupling manufacturer's specifications before assembly. Apply the manufacturer's approved lubricant to gaskets and bolt housings.
7.2.6 Assemble and install pipework progressively from the riser outward to branch lines, maintaining the correct gradient for drainage where specified (typically 1:500 minimum slope towards drain points).
7.2.7 Install all fire-stopping materials (intumescent collars, fire-rated sealant) at all penetrations through fire-rated walls, floors, and ceilings in accordance with the manufacturer's installation instructions and approved fire-stopping submittals. Obtain QA/QC sign-off at each penetration point.
7.2.8 Install seismic sway bracing at intervals and locations as specified in the approved seismic design drawings (where applicable), in full compliance with NFPA 13.
7.3 Sprinkler Head Installation
7.3.1 Sprinkler heads shall be installed as the last item after all hydraulic pressure testing and flushing activities have been completed and accepted.
7.3.2 Verify that the sprinkler head type, temperature rating, orifice size, and orientation (upright, pendant, sidewall) match the approved design schedule prior to installation in each area.
7.3.3 Use only the dedicated sprinkler head installation wrench supplied or approved by the manufacturer. Pipe wrenches or adjustable spanners must not be used on sprinkler heads or their frame arms. Over-tightening is strictly prohibited.
7.3.4 Sprinkler heads shall be positioned at the correct deflector-to-ceiling distance as specified in NFPA 13 and the approved drawings. Deviations exceeding permissible tolerances shall not be accepted without Engineer's written approval.
7.3.5 A spare sprinkler head cabinet containing a minimum quantity of spare heads (minimum six of each type and rating installed, plus the appropriate installation wrench) shall be provided at the main alarm valve location, as required by NFPA 13.
7.4 Valve Sets, Alarm Valves & Accessories
7.4.1 Install the alarm check valve assembly in the designated valve room / riser shaft, plumb and true, complete with retarding chamber, pressure gauges, drain valve, and test bypass valve as per the approved drawing and manufacturer's instructions.
7.4.2 Install all gate valves (OS&Y type) and butterfly valves at locations indicated on the approved drawings. Valves shall be accessible for operation and maintenance and fitted with supervisory switches connected to the fire alarm panel where specified.
7.4.3 Install water flow indicators (flow switches) on branch main piping per the approved drawings. Ensure correct electrical connection to the fire alarm control panel (FACP) is coordinated with the electrical trade and tested during commissioning.
7.4.4 Install test and drain assemblies at the remote end of each zone as per NFPA 13, with drain pipework directed to the nearest approved drainage point.
7.5 Hydraulic Pressure Testing
7.5.1 Prior to pressure testing, ensure that all pipe connections are complete within the section to be tested, all open ends are blanked with rated test plugs, and all sprinkler head branch outlets are capped.
7.5.2 Connect the hydraulic test pump and two calibrated pressure gauges (one at the pump end, one at the highest/most remote point of the section) to the system.
7.5.3 Fill the pipework with clean water and vent all air from the system prior to applying test pressure.
7.5.4 Pressurize the system to the test pressure as required by NFPA 13 (minimum 200 psi / 13.8 bar for systems with working pressures up to 150 psi, or 50 psi / 3.4 bar above working pressure — whichever is greater).
7.5.5 Hold the test pressure for a minimum of two hours (or as specified by the Engineer/Authority) without pressure drop. Any leakage identified shall be recorded, repaired, and re-tested. All results shall be documented on the Pressure Test Record Form and signed by the QA/QC Inspector.
7.6 Flushing of the System
7.6.1 Following successful pressure testing, the system shall be flushed prior to installation of sprinkler heads. Flushing shall be conducted in accordance with NFPA 13 requirements to remove all debris, scale, and contaminants from the pipework.
7.6.2 Flushing shall proceed from the supply main progressively outward through each branch, with discharge directed to a suitable drain point or tank. The QA/QC Inspector shall verify that discharge water runs clear before flushing is deemed complete.
7.7 Commissioning & Functional Testing
7.7.1 Following completion of installation, pressure testing, flushing, and sprinkler head installation, a full system commissioning shall be conducted in the presence of the QA/QC Inspector, Site Engineer, Client Representative, and the Authority Having Jurisdiction (AHJ) where required.
7.7.2 Confirm that the system is connected to the approved water supply (gravity tank, pressure tank, or pump set) and that flow and pressure at the design point comply with the hydraulic calculations.
7.7.3 Conduct a flow test using the inspector's test connection at the most hydraulically remote point. Verify that the flow switch activates the fire alarm and any associated suppression panel signals within the specified time.
7.7.4 Verify correct operation of the alarm check valve, including the retarding chamber function, pressure gauge readings, and alarm activation.
7.7.5 All commissioning test results shall be recorded on the commissioning test certificate and submitted to the Client and Authority as part of the handover documentation package.
7.8 Protection of Completed Work
7.8.1 All installed sprinkler heads shall be protected from damage during concurrent construction activities using approved sprinkler head guards. Guards shall be removed prior to system commissioning.
7.8.2 Exposed pipework shall be protected from mechanical damage using timber battens, foam lagging, or other approved protective materials where other trades are working in close proximity.
7.8.3 Valves and instrumentation shall be locked or tagged in the correct operational position and access restricted to authorised personnel only.
8. HEALTH, SAFETY & ENVIRONMENT (HSE)
All works shall comply with the project HSE Plan, the applicable regulations of [LOCAL HSE AUTHORITY / REGULATORY BODY NAME], and the requirements listed below:
- Toolbox Talks (TBT): A TBT shall be conducted by the HSE Officer or Site Foreman at the commencement of every work shift. Topic shall be relevant to the planned daily activities. Attendance shall be recorded and filed.
- Mandatory PPE: Hard hat (EN 397), safety footwear (EN ISO 20345, steel-toecap), high-visibility vest (EN ISO 20471), safety glasses (EN 166), gloves (EN 388 — cut-resistant for handling pipe/fittings), and hearing protection where noise levels exceed 85 dB(A). Full-face shield when grinding.
- Working at Height: All work above 1.8 m shall be carried out from approved scaffolding, MEWPs, or stepladders. Fall arrest harness (EN 363) and double-lanyard system shall be worn when working on MEWPs or where collective fall protection is not feasible. No work shall commence on elevated platforms without prior inspection and tagging by a competent person.
- Electrical Tool Safety: All portable electrical tools shall be inspected before use and bear a valid colour-coded inspection tag. Residual Current Devices (RCDs) shall be used on all portable power tools. Damaged tools shall be removed from service immediately.
- Manual Handling: Pipes longer than 3 m or heavier than 25 kg shall be handled by a team of two or more operatives, or with mechanical lifting assistance. Operatives shall be trained in safe manual handling techniques.
- Chemical & Substance Handling: Safety Data Sheets (SDS) for all solvents, sealants, and lubricants used on site shall be available at the point of use. Operatives shall be briefed on their contents. All chemicals shall be stored in a bunded, ventilated area.
- Hot Works: A Hot Work Permit shall be obtained for any welding, grinding, or flame-cutting activities. A trained fire watch shall be present throughout hot work activities and for a minimum of 60 minutes after completion.
- Waste Management: All waste shall be segregated into labelled bins (general waste, scrap metal, hazardous waste). Waste oils, solvents, and contaminated materials shall be disposed of by a licensed waste contractor. No discharge of any materials to drains, waterways, or undesignated areas is permitted.
- Emergency Procedures: The emergency assembly point is located at [ENTER ASSEMBLY POINT LOCATION]. The site emergency contact number is [ENTER EMERGENCY CONTACT NUMBER]. A first aid kit and qualified first aider shall be available at all times on the work front. Any injury, near miss, or dangerous occurrence shall be reported to the HSE Officer immediately.
- Activity-Specific Hazards: Water leaks during pressure testing (slips and electrical hazards — cordon off area, notify Electrical Supervisor); sprinkler head mishandling (premature activation — use only manufacturer tools); confined space entry to valve rooms (assess against project confined space register and issue appropriate permit).
Permit to Work Requirements: [ENTER PTW REQUIREMENTS — e.g., Hot Work Permit, Confined Space Entry Permit, Working at Height Permit]
Risk Assessment Reference: [ENTER RISK ASSESSMENT DOCUMENT REFERENCE]
9. QUALITY CONTROL & INSPECTION
All inspection and test activities shall be executed by the QA/QC Inspector in accordance with the project Inspection and Test Plan (ITP). No activity shall proceed past a designated HOLD point without written sign-off from the authorised inspector. All records shall be retained in the project quality dossier.
| # | Inspection Activity | Reference Document | Acceptance Criteria |
|---|---|---|---|
| 1 | Material Inspection on Delivery | Approved Material Submittal; NFPA 13; EN 12845 | Materials match approved submittals; FM/UL labels present; no physical damage or defects |
| 2 | Pipe Support / Hanger Installation | NFPA 13; Approved Drawings | Hangers at specified intervals; independent structural support; plumb and secure |
| 3 | Pipe Routing & Alignment | Approved Construction Drawings | Pipe routes match approved drawings; correct gradient to drain points; no sagging |
| 4 | Threaded / Grooved Joint Inspection | NFPA 13; ANSI/ASME B1.20.1; Mfr. Specs | Threads clean and correctly formed; sealant correctly applied; grooves within tolerance; no leaks |
| 5 | Fire Stopping at Penetrations (HOLD POINT) | Approved Fire Stop Submittal; Project Specification | Approved intumescent collar/sealant installed correctly per manufacturer data sheet; no gaps |
| 6 | Valve Set & Alarm Valve Installation | NFPA 13; Manufacturer Data Sheet; Approved Drawings | Valves plumb and at correct location; pressure gauges readable; drain connections free; labels affixed |
| 7 | Hydraulic Pressure Test (HOLD POINT) | NFPA 13 Section 24.2; Project Specification | Test pressure maintained for minimum 2 hours with no pressure drop; no visible leaks; test certificate signed |
| 8 | System Flushing Verification | NFPA 13 Section 24.1 | Discharge water runs visually clear; flushing record signed by QA/QC Inspector |
| 9 | Sprinkler Head Installation Check | NFPA 13; Approved Head Schedule | Correct type, rating, and orientation per schedule; correct deflector-to-ceiling distance; installed with correct wrench; no damage |
| 10 | Commissioning & Flow Test (WITNESS POINT) | NFPA 13; NFPA 72; Project Specification | Flow at inspector's test connection activates flow switch and alarm within required time; system pressures meet hydraulic design; commissioning certificate signed |
ITP Reference: [ENTER ITP DOCUMENT REFERENCE NUMBER]
10. REFERENCE DOCUMENTS
- ISO 9001:2015 — Quality Management Systems
- ISO 14001:2015 — Environmental Management Systems
- ISO 45001:2018 — Occupational Health & Safety Management Systems
- IOSH — Managing Safely (risk assessment and method statement principles)
- NFPA 13 — Standard for the Installation of Sprinkler Systems
- NFPA 72 — National Fire Alarm and Signalling Code
- NFPA 2001 — Standard on Clean Agent Fire Extinguishing Systems
- EN 12845 — Fixed Firefighting Systems — Automatic Sprinkler Systems
- ISO 6183 — Fire Protection Equipment — CO2 Extinguishing Systems
- BS EN 363 — Personal Fall Protection Equipment
- OSHA 29 CFR 1926.502 — Fall Protection Systems Criteria
- ISO 16025 — Standards for Height Safety Equipment
- Approved Material Submittals — Ref: [ENTER REFERENCE]
- Approved Shop / Construction Drawings — Ref: [ENTER DRAWING REGISTER REFERENCE]
- Project Specifications — [ENTER RELEVANT SECTION / DIVISION REFERENCE]
- Project HSE Plan — Ref: [ENTER REFERENCE]
- Inspection & Test Plan (ITP) — Ref: [ENTER REFERENCE]
- Risk Assessment — Ref: [ENTER REFERENCE]
11. DOCUMENT REVISION HISTORY
| Rev. | Date | Description of Change | Approved By |
|---|---|---|---|
| 00 | [DD/MM/YYYY] | Initial Issue | [NAME / DESIGNATION] |
| 01 | [DD/MM/YYYY] | [ENTER DESCRIPTION OF CHANGE] | [NAME / DESIGNATION] |
12. APPROVAL & SIGN-OFF
| Prepared By | Reviewed By | Approved By | Client / Owner Representative |
|---|---|---|---|
|
Name: [ENTER NAME] Designation: [ENTER DESIGNATION] Signature: ___________________________ Date: [DD/MM/YYYY] |
Name: [ENTER NAME] Designation: [ENTER DESIGNATION] Signature: ___________________________ Date: [DD/MM/YYYY] |
Name: [ENTER NAME] Designation: [ENTER DESIGNATION] Signature: ___________________________ Date: [DD/MM/YYYY] |
Name: [ENTER NAME] Designation: [ENTER DESIGNATION] Signature: ___________________________ Date: [DD/MM/YYYY] |
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