- Author
- Arvidson, M.
- Title
- Sprinklerskydd for s k Tray Sorter i sagverk: en forstudie. [Automatic Sprinkler Protection of Lumber Sorters in Saw Mills: An Initial Study.]
- Coporate
- Brandforsk, Stockholm, Sweden
- Report
- SP Report 1999:02; BRANDFORSK Project 611-981, 1999, 20 p.
- Distribution
- For more information contact: SP Swedish National Testing and Research Institute, Box 857, SE-501 15 BORAS, Sweden. Telephone: +46 33 16 50 00, Fax: +46 33 13 55 02, Email: info@sp.se Website: http://www.sp.se/eng/default.htm
- Keywords
- lumber | sprinklers | sidewall sprinkler systems | wood | manufacturing
- Identifiers
- saw mills; lumber sorters; horizontal tray sorters; wood manufacturers
- Abstract
- [ONLY ABSTRACT IN ENGLISH] Horizontal tray sorters are becoming more and more common within the Swedish saw mil1 industry. The reason is that this type of lumber sorter handles lumber more cautious compared to vertical bin sorters. The increased use has resulted in a need to establish a proper sprinkler protection concept. The only known protection concept for tray sorters today is provided by Factory Mutual in their Loss Prevention Data Sheet 7-10. This concept is based on horizontal sidewall sprinklers along both sides of the sorter combined with ceiling sprinklers. According to Factory Mutual, the concept is based on judgement, not on testing. One reason for this is the excellent loss history. Tray sorters in Sweden are generally higher compared to tray sorters in USA. It is common to have sorters with 30 and more tiers. The explanation for this is that lumber is classified in more qualities in Sweden. The larger sized sorters, with associated difficulties of emptying the sorter if there is a fire in an adjacent area, calls for a more rigorous sprinkler protection than described in FM DS 7-10. Based on discussions with representatives from insurance companies, equipment manufacturers and other parties, two sprinkler protection concepts have therefore been formulated. These two concepts are described in the report. The first concept is based on a combination of horizontal sidewall sprinklers along both sides of the sorter and upright sprinklers. Every third tier is protected. The second concept is based on sidewall sprinklers only, protecting every third tier. In both cases, sprinklers shall be protected by steel plates that also acts as heat collectors. It is suggested that that these two concepts shall form base for future large scale fire tests.