SIST EN 12259-12:2023/oprA1:2026

Overview

SIST EN 12259-12:2023/oprA1:2026 is a Slovenian standard developed for fixed firefighting systems, focusing specifically on the pumps used in sprinkler and water spray systems. This standard, aligned with EN 12845 and EN 17451, outlines the requirements for single stage and multi-stage centrifugal pumps, including design aspects like mechanical seal or soft packing. It applies to various types of pumps, such as end suction, horizontal split case, ring section, inline, submersible motor borehole, and vertical turbine pumps, regardless of installation orientation. This addition (Amendment A1) further modifies and clarifies technical requirements to ensure effective fire safety and system reliability.

Key Topics

• Pump Types and Configurations:
  The standard covers a broad range of centrifugal pumps to be used in automatic fire sprinkler systems, including:

  • End suction pumps (close coupled or long coupled, back pull-out type)
  • Axial horizontal split case pumps
  • Ring section pumps (single or multi-stage, single or multi-outlet)
  • Inline pumps (inlet and outlet in line)
  • Submersible motor borehole pumps
  • Vertical turbine pumps

• Orientation Flexibility:
  Pumps can be installed vertically, horizontally, or on a slope according to manufacturer guidelines, enabling flexibility in fire protection system design.

• Technical Amendments:
  The amendment notably addresses:

  • Revised definitions and symbols
  • Assessment methods for pump performance
  • Criteria for Net Positive Suction Head Required (NPSHr) for different pump types

• Conformity with European Norms:
  Complies with multidisciplinary fire suppression regulations and integrates seamlessly with EN 12845 (Automatic sprinkler systems) and EN 17451 (Water spray systems for fire protection).

Applications

This standard is essential for manufacturers, designers, installers, and maintenance professionals involved in the setup and upkeep of automatic sprinkler and water spray systems in residential, commercial, and industrial buildings.

• New Installations:
  Ensures that newly installed fixed firefighting systems employ pumps that meet stringent safety and performance standards.

• System Upgrades:
  Guides retrofitting or upgrading existing fire suppression systems by specifying pump types compatible with various system layouts and orientations.

• Regulatory Compliance:
  Assists organizations in meeting national and European safety regulations for property and life protection against fire hazards.

• Quality Assurance:
  Specifies design and performance criteria that help users select pumps capable of consistent operation under fire emergency conditions.

Related Standards

• EN 12845 - Fixed firefighting systems: Automatic sprinkler systems - Design, installation, and maintenance requirements.
• EN 17451 - Fixed firefighting systems: Water spray systems - Requirements and testing methods.
• EN 12259-1 (and other parts) - Fixed firefighting systems: Components for sprinkler and water spray systems.
• ISO 6182 Series - International standards for fire protection system components.

By implementing SIST EN 12259-12:2023/oprA1:2026, stakeholders ensure the use of qualified pumps in fire protection systems, supporting optimal performance, regulatory conformity, and enhanced safety for buildings and occupants.