Form 20: Sprinkler-System Engineer's Certificate — A Complete Guide for Business Owners and Building Managers

What Is Form 20 and Why Does It Exist

Form 20 is an official certificate within the requirements of the National Fire and Rescue Authority, in which a registered engineer with an affiliation to the water field certifies that the sprinkler system at the property was designed, installed and maintained in accordance with the applicable standards and requirements. It is a document that forms part of the business licensing file, and in buildings subject to a mandatory sprinkler-installation requirement — without it, it is difficult to impossible to obtain or renew a business license.

The form exists for a simple and human reason: fire spreads quickly, and people are not always awake or able to evacuate in time. A sound sprinkler system can restrain a fire in its early stages, buy precious time for an orderly evacuation, and prevent disaster. The certificate is the mechanism that ensures a qualified, responsible party has verified that the system will indeed operate when needed.

Which System the Form Certifies and How It Saves Lives

A sprinkler system is a network of pipes under water pressure, laid out in the building's ceiling. Each sprinkler head responds to heat independently — when the ambient temperature rises above a certain threshold, the head opens and releases water directly onto the seat of the fire. This enables early restraint of the fire even during the night, without depending on a person's presence. Experience and research in the field consistently indicate that sound sprinkler systems significantly reduce the scope of casualties and property damage.

Form 20 certifies, on the basis of an engineering inspection and assessment, that the system:

• Was designed in accordance with the relevant Israeli standard (foremost SI 1596, the standard for sprinkler systems) and the fire authority's requirements.
• Was installed as required — including the layout of the sprinkler heads, pressures, flow rates and water-supply sources.
• Is maintained and inspected on an ongoing basis and is in proper operational condition.

The Regulatory Background — Where It Fits Within the Fire Authority's Requirements

The Business Licensing Law, 5728-1968, and its regulations require business owners of various types to obtain approvals from governmental bodies, including the National Fire and Rescue Authority. As part of the license conditions, the fire authority sets fire-safety requirements tailored to the type of business and the building. In properties subject to a mandatory sprinkler-installation requirement — by virtue of the Business Licensing Order, the fire authority's requirements or the building permit — Form 20 is the practical proof of compliance with this obligation.

The form is transferred to the fire authority, usually as part of the business licensing file submitted through the local authority, and serves as the basis for the approval issued by the fire inspector.

Who Must Submit the Form and When

• New business owners applying for a license in a building where a mandatory sprinkler system exists.
• Existing business owners at license renewal, when up-to-date documentation is required.
• Property owners who received a direct demand from a fire inspector following an inspection.
• Commercial building managers — malls, office towers and industrial buildings — where the obligation applies at the level of the entire building.

It is important to understand: even if the business itself has not changed, if the license renewal date has arrived and the inspector does not hold up-to-date documentation — they may demand the form anew.

Who Is Qualified to Sign — the Nuance Many Miss

Here lies the critical difference. Form 20 cannot be signed by any technician or maintenance worker. It requires:

• A registered engineer — that is, an engineer registered in the Register of Engineers and Architects under the Engineers and Architects Law, 5718-1958 (not a practical engineer and not a technician).
• Who has an affiliation to the water field — demonstrated specialization and experience in the design and inspection of water and sprinkler systems. Not every registered engineer is competent to sign.

In practice, the signatory is usually an engineer with a background in water, plumbing or firefighting systems. A technician, an ordinary maintenance company, an architect or an engineer without a demonstrated affiliation to the water field — are not competent to sign. The fire inspector may reject a form signed by an unqualified party.

Validity of the Certificate and Inspection Frequency

The validity of Form 20 is directly tied to the maintenance schedule of the system and to the fire inspector's requirements. As a rule:

• A periodic inspection of the sprinkler system is required at a fixed frequency — usually at least once a year, and sometimes more frequently depending on the size of the system and the type of property.
• The validity of the form is set by the fire inspector, and in many cases is tied to the next license renewal date.
• Any change to the business, its area or the system itself requires updating the form — regardless of the fixed renewal date.

It is advisable to verify with the local fire inspector the frequency and validity that apply to the specific property, as they may vary between types of buildings and occupancies.

What the Fire Inspector Actually Checks

During an inspection, the inspector does not settle for the existence of a signed form — they also check the physical situation on site:

• Whether the sprinkler heads are clear and are not blocked by shelves, signs or storage equipment.
• Whether the water pressure and system function are proper.
• Whether there are damaged, rusted or painted-over sprinkler heads.
• Whether the control and drainage components (Test & Drain) are sound and accessible.
• Whether the maintenance log is up to date.

The inspector compares their findings to the content of Form 20. Any gap between the situation on site and the written certificate constitutes a red flag, and may lead to a correction demand, a delay in the license, and in serious cases — administrative enforcement proceedings.

Common Mistakes and Oversights

• Signature by an unqualified party: turning to a plumbing company that has no registered engineer with a water-field affiliation — and the form is rejected.
• An old form not updated after changes: a renovation, expansion or internal partitioning changes the required sprinkler layout, and therefore requires an update.
• Sprinkler heads blocked by storage: a warehouse packed to the ceiling nullifies the system's effectiveness even when the form is valid — and the inspector sees it immediately.
• Impaired water pressure following building works: renovations sometimes damage the water network, and no one notices until inspection.
• Failure to update after replacing the maintenance contractor: when the party that handled the system changes, it is proper to refresh the certificate and documentation as well.
• Confusion between the form and the inspection: submitting the form is not a substitute for the physical inspection — both are required.

Practical Tips for the Business Owner and Building Manager

• Keep a copy of Form 20 in the property's document file, and not only with the contractor.
• Schedule the sprinkler inspection well in advance — preferably weeks before the license renewal date — so there is time to handle any finding.
• Make sure in advance that the engineer is defined as a "registered engineer with an affiliation to the water field," and ask to see proof of their registration.
• Update the form immediately after any renovation, even if the license is still valid.
• Keep a clear margin around the sprinkler heads and do not store materials at a height that covers them, in accordance with the standard's and manufacturer's instructions.

How Domera Assists in Tracking This Certificate

Domera lets the building manager store Form 20 in the property's digital file, set an automatic reminder before the certificate's renewal date, and document the details of the signing engineer alongside the findings of previous inspections — so that critical information does not depend on a paper archive or the memory of an external contractor.