NPB 105-95 PDF

Full title and description

NPB 105-95 — "Determination of categories of rooms and buildings on explosion‑fire and fire hazard" (Russian: НПБ 105-95 — Определение категорий помещений и зданий по взрывопожарной и пожарной опасности). Normative document establishing a methodology to classify indoor and outdoor premises, building parts and installations by their explosion‑fire and fire hazard based on the types, quantities and properties of combustible, flammable and explosive substances present.

Abstract

NPB 105-95 defines category boundaries and calculation/assessment procedures used to assign explosion‑fire and fire hazard categories to rooms, buildings and outdoor installations (industrial and storage). It sets out simplified calculation methods for hazard parameters for flammable gases, vapours, liquids and combustible dusts, lists criteria for assigning classes (A, B, V and related subcategories used in Russian practice), and provides worked examples and guidance for project review and fire‑safety planning. The standard was introduced in the mid‑1990s and later superseded by a 2003 revision.

General information

• Status: Superseded / replaced (replaced by NPB 105-03).
• Publication date: Approved 31 October 1995 (Order No. 32); effective 1 January 1996; withdrawal/expiry recorded 1 August 2003.
• Publisher: Main Directorate of the State Fire Service (ГУ ГПС) of the Ministry of Internal Affairs of the Russian Federation (developer bodies included VNIIPO and other research institutes).
• ICS / categories: Fire protection; explosion and fire hazard classification (ICS: 13.220 — Fire protection / fire safety).
• Edition / version: NPB 105-95 (original 1995/1996 edition); later superseded by NPB 105-03 (2003 revision).
• Number of pages: Typical PDF editions list 24 pages (handbook and application guides are longer when published separately).

Scope

The standard applies to industrial and storage premises, building parts (fire compartments between fire‑resistant walls) and outdoor installations where flammable/combustible gases, vapours, liquids, solids or dusts are produced, processed, stored or handled. It establishes procedures and numerical criteria to determine a room's or installation's category with respect to explosion‑fire and fire hazard for use in design, permitting, project review and fire‑safety regulation.

Key topics and requirements

• Classification system for rooms, buildings and outdoor installations by explosion‑fire and fire hazard (including Russian class labels: A, B, V, etc., with subcategories).
• Methods and simplified calculation procedures to determine hazard parameters for flammable gases, vapours and liquids (volumes, concentrations, ventilation considerations, release scenarios).
• Assessment methods for combustible dusts and solid combustible materials.
• Rules for assigning categories based on quantities, physical‑chemical properties and technological process features.
• Definition of zone extents and influence areas (e.g., five‑meter zones adjacent to openings for some operations) and special provisions for charging/handling areas, painting, gas holders, etc.
• Worked examples and guidance aimed at project reviewers, designers and fire‑safety inspectors.

Typical use and users

Used by fire safety authorities, design offices and project reviewers, industrial safety engineers, facility owners/operators, code compliance inspectors and educators in fire‑safety training. Typical applications include classification of production halls, storage rooms, filling/charging stations, painting shops, gas handling areas and any spaces where flammable liquids, gases or combustible dusts are present or processed.

Related standards

NPB 105-95 is part of the Russian NPB series of fire‑safety regulations. It replaced earlier ONTP documents and was itself superseded by NPB 105-03 (2003). Related normative documents commonly referenced with NPB 105-95 include other NPB rules on fire detection and suppression, SNiP and SP regulations on fire protection and construction (for example, SNiP/SP fire prevention and automatic fire protection rules), and application guides and handbooks that explain application to project documentation.

Keywords

NPB 105-95, explosion hazard, fire hazard, room categories, building categories, flammable liquids, flammable gases, combustible dust, fire classification, fire safety, VNIIPO, Russian fire rules.

FAQ

Q: What is this standard?

A: NPB 105-95 is a Russian fire‑safety regulation titled "Determination of categories of rooms and buildings on explosion‑fire and fire hazard" that sets methods and criteria for classifying premises and installations by explosion‑fire and fire hazard.

Q: What does it cover?

A: It covers the methodology for assigning hazard categories to indoor and outdoor areas where flammable gases, vapours, liquids, solids or dusts are present; simplified calculation methods for hazard parameters; criteria for category assignment; and examples for project review.

Q: Who typically uses it?

A: Fire‑safety regulators and inspectors, designers and project reviewers, industrial safety engineers, facility operators and educators involved in fire‑safety and hazardous‑materials management in Russia or for projects that must reference Russian fire regulations.

Q: Is it current or superseded?

A: Superseded. NPB 105-95 was introduced into force on 1 January 1996 and was later replaced by NPB 105-03 (the 2003 revision). Application handbooks and updated national regulations should be consulted for current mandatory requirements.

Q: Is it part of a series?

A: Yes — it belongs to the Russian NPB series of fire‑safety norms (НПБ) and is related to other NPB documents, SNiP/SP construction and fire codes, and application handbooks that clarify practical use.

Q: What are the key keywords?

A: Explosion hazard, fire hazard, room categories, building categories, flammable liquids, flammable gases, combustible dusts, fire classification, NPB 105-95, fire safety.