LPS 1182 Issue 2.2 Requirements and tests for LPCB approval of fixed fabric smoke curtains, fixed metal smoke curtains and powered smoke curtains
This Loss Prevention Standard (LPS) specifies the constructional, test, performance and installation requirements for fixed fabric smoke curtains, fixed sheet metal smoke curtains and powered smoke curtains installed in constructions complying with the LPC “Code of Practice for the Construction of Buildings”.
Fabric Smoke Curtains
For the purpose of this document fabric smoke curtains shall be made of non-fire- supporting material and used for the containment of cool smoke and gases (up to 600°C).
Sheet Metal Smoke Curtains
For the purpose of this document sheet metal smoke curtains shall be made essentially of metal but may include other non-combustible materials. These curtains shall be used for the containment of hot smoke, gases and fire (up to 1000°C).
Powered Smoke Curtains
For the purpose of this document powered smoke curtains shall be made of non- fire-supporting material, used for the containment of cool smoke and gases (up to 600°C), which automatically lower into position via an appropriate detection system.
Class O
Class O materials are either:
materials of limited combustibility complying with BS 476 : Part 11 : 1988 or
materials which are non-combustible complying with BS 476 : Part 4 : 1984 or
Fire Resistance
All tests shall be undertaken by the LPCB or agreed with the LPCB prior to testing at an LPCB approved test facility.
Historical test data may be acceptable provided it can be demonstrated that the test methods used were acceptable and the test information obtained is adequate.
Fire Curtains
Fire curtains shall be made either of sheet steel or fabrics which have been tested to and achieved Class O as defined in The Building Regulations 1985 (see definitions 2.4).
The supporting systems shall be made of steel and shall be designed so that the bending stresses do not exceed 12.1 N/mm2 and shear stresses do not exceed 0.7 of this value.
Alternatively the whole system can be tested to BS 476 : Part 20 : 1987 (see Appendix A).
Smoke Curtains – Grade A
Test samples shall be representative. Where more than one material is used each material type shall be tested.
Smoke
The design of the curtain and its supports shall not add significantly to the smoke logging of the building.
Scope of Approval
The approval will be limited to the material type tested.
All LPCB approved products shall be marked with the LPCB logo, approval reference number, manufacturer’s name and date of manufacture.
POST INSTALLATION INSPECTION
The LPCB reserves the right to make random inspections of installed approved products. Any approved products found not to comply with the specification agreed with the LPCB shall be investigated and may result in loss of approval.
Complaints about LPCB approved products may be investigated by the LPCB. Where complaints are not resolved to the satisfaction of the LPCB, the LPCB may withdraw approval.
The manufacturer shall be issued with an LPCB approvals certificate stating the scope of approved products and their approvals reference numbers.
Approved products will be listed in the annual LPCB List of Approved Products and Services.