BSI - BS EN 12952-11
Water-tube boilers and auxiliary installations - Part 11: Requirements for limiting devices of the boiler and accessories
|Publication Date:||31 August 2007|
|ICS Code (Boilers and heat exchangers):||27.060.30|
|ICS Code (Gas and steam turbines. Steam engines):||27.040|
This European Standard specifies requirements for limiters (or limiting devices) which are incorporated into safety systems for water-tube boilers as defined in EN 12952-1.
A limiter (or limiting device) can be either:
- a safety accessory as defined in the Pressure Equipment Directive, Article 1, clause 2.1.3, and needs to include the safety logic and final actuator, or
- one element of a safety system, for example, a self-monitoring water level sensor used as part of a safety accessory as defined in the Pressure Equipment Directive, Article 1, clause 2.1.3. The overall boiler protection function shall be provided in association with additional safety logic (where appropriate) and a final actuator.
The design requirements and examination of functional capability for the limiters are covered in this European Standard.
For an explanation of the extent of the limiter (or limiting device).