Shell boilers - Part 12: Requirements for grate firing systems for
2019
Document Number: NL EN 12953 12 : 2019
Sector: Energy and Heat transfer Engineering
TC: NL TC 11
ICS: 27.060.30 - 27.100
The Lebanese European Standard NL EN 12953 concerning shell boilers consists of the following Parts: Part 1: General Part 2: Materials for pressure parts of boilers and accessories Part 3: De