Wash Down Systems

TRM has a proven track record of providing field designed water washdown system for coal handling facilities. Our field supervision is accustomed to working in the coal handling environment. Our supervisors are empowered to work directly with plant engineering making design changes on the fly, knowing their technical and design support are just a telephone call away.

TRM’s extensive experience with coal handling fire protection systems insures that we understand the true meaning of reliability and simplicity – nothing less is acceptable in the fire protection field.

Typical Scope of Work

TRM typically provides a fixed washdown system that will provide washdown of coal fines and small coal particles (less than 1/8 inch in diameter) from all surfaces from the underside of the ceiling to the floor of coal handling structure enclosures and galleries.

Surfaces that will require washdown typically include walls, floors, structural ledges, walkway, galleries, conveyors, chutes and piping.  Our automated washdown systems are operated automatically from a remote control panel.  The “fixed” system is composed of headers and nozzles divided into numerous zones.  The nozzles are specially designed and oriented to washdown all surfaces within the zone.  Typically the fixed spray system will be activated by opening a zone isolation valve.  Each zone is sequentially washed for a pre-programmed time until all zones are complete to minimize peak water requirements. 

TRM typically includes the following engineering services:

• Kick off meeting.
• Layout Drawings for approval.
• HMI Screen Graphics for approval, if utilized.
• As built mechanical and electrical drawings.
• Operators Manuals.
• Start-up services.

TRM’s design provides adequate directional sprays to be used at solid floor elevations to move water and effluents to the drains. TRM’s systems prevent coal dust from being trapped and not washed-off the structure and equipment. 

Special attention is given to areas where the ceiling joins the walls, wind bracing joints and support columns and the floors. Zone isolation valves and drain valves are always designed to be accessible from operating floor and platforms.

TRM designs piping to avoid physical interferences with existing coal handling equipment.  The piping is designed not to block access to, or limit maintenance of exiting equipment.  If the equipment maintenance must be blocked to ensure proper washdown, TRM’s design provides sufficient unions to allow easy removal of spray piping.