1 Scope
This specification specifies the scope, materials, detailing, construction and project quality requirements of fire protection for steel structures of buildings (constructions) in petrochemical production areas.
This specification is applicable to the design, construction and acceptance of fire protection for steel structures of buildings (constructions) of constructed, renovated or extended projects in petrochemical production areas.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 8923 Rust grades and preparation grades of steel surfaces before application of paints and related products
GB 14907 Fire resistive coating for steel structure
GA/T 714 Rapid rise fire test methods of fire protection materials for structural elements
CECS 24:90 Technical code for application of fire resistive coating for steel structure
3 Fundamental requirements of fireproofing design
3.1 The steel structures of constructions meeting the following requirements in the petrochemical production areas shall be subjected to fireproofing design:
a) Load-bearing steel frames and steel supports of the equipment for Classes A and BA liquids with an individual volume equal to or greater than 5m3;
b) Load-bearing steel frames and steel supports of the equipment for the treatment, storage or transportation of extremely hazardous and highly hazardous toxic media in the explosion hazardous area;
c) Load-bearing steel frames and steel supports of the equipment for Classes BB and C liquids with an operating temperature equal to or higher than the spontaneous ignition point and an individual volume equal to or greater than 5m3;
d) Steel pipe racks of the main pipe gallery of device in the explosion hazardous area;
e) Load-bearing steel frames and steel supports for non-combustible medium equipment with a height-diameter ratio equal to or greater than 8 and a total mass equal to or greater than 25t in the explosion hazardous area.
3.2 The steel structures of buildings meeting the following requirements in the petrochemical production areas shall be subjected to fireproofing design:
a) Factory buildings with the fire hazard classification of production conforming to those specified in Annex A;
b) Warehouses with the fire hazard classification of the goods stored in them conforming to those specified in Annex B.
Foreword II
1 Scope
2 Normative references
3 Fundamental requirements of fireproofing design
4 Fire prevention of buildings
4.1 Fire resistance rating of steel structural factory buildings
4.2 Fire resistance rating of steel structural warehouses
4.3 Fire resistance of steel building elements
4.4 Scope of protection for building elements
5 Fire prevention of construction
6 Fireproofing materials and thickness of cover
7 Detailing of fireproofing cover
8 Requirements for quality of fireproofing project
9 Acceptance of project
Annex A (Normative) Fire hazard classification of production
Annex B (Normative) Fire hazard classification of goods stored in warehouses
Annex C (Normative) Calculation method for thickness of thick fireproofing coating for steel structures
Explanation of wording in this specification
