Platform edges

A final consideration in selecting a mixture of power generation or direct drive prime movers is exhaust ductwork. If a platform is surrounded by gas-combustion turbine drivers exhausting vertically, hot gases may create hazards at some wind conditions. Ductwork may need to be run Irom the exhaust to platform edge this should be minimized to assist area classification, helicopter landing patterns, and expense. 

Because shelves in tropical to subtropical environments are capable of producing major quantities of carbonates, they are often referred to as carbonate factories. A model in which carbonate production decreases with increasing water depth was produced by Bosscher and Schlager (1992). Others (e.g.. Bowman and Vail, 1999) have included the influence of distance from the platform edge as an important factor in carbonate production in shallow-to-shoal water environments. 

Pits, openings, and platform edges to be provided with a substantial barrier... 

Elevated Work Equipment Platforms Overhead systems have protection for falling materials Platform edges and opening properly guarded Platforms free of unorganized materials adequate walk/stand areas ... 

An estimated 75% of the components of modem aerospace gas turbines are coated, in both the hot and cold sections. This includes stator shrouds and vanes, blade platform edges, blade z-notches, blade tips and shroud tops, and combustor-liner interior surfaces. The use of ceramic coatings in aerospace turbines is being expanded to marine and industrial gas turbines which have similar (and often more acute) environmental problems. 

Wood platforms shall not be covered with opaque finishes, except that platform edges may be covered or marked for identification. Platforms may be coated periodically with wood preservatives, fire-retardant finishes, and slip-resistant finishes however, the coating may not obscure the top or bottom wood surfaces. 

Containers must not be stored near walkways, elevators, stairs, unprotected platform edges, or where heavy objects may strike or fall on them. 

The uncoated blade showed an 0.005 inch corrosion attack over 50% of the airfoil concave face, with about 0.010 inch penetration at the base of the airfoil. Examination of the coated blade revealed no visual evidence of attack, except for one small roughened spot on the leading edge about 1 inch up from the platform, and a second spot in the middle of the convex side about 1 inch down from the tip. 

Safety chutes should begin at the outside edge of platforms. 

Hydrants should be considered as a backup water supply source to monitors and fixed fire suppression systems. Hydrants should be located on the ring main at intervals to suitably direct water on the fire hazard with a fire hose. Hydrants monitors and hose reels should be placed a minimum of 15 meters (50 ft.) from the hazard they protect for onshore facilities. Hydrants in process areas should be located so that any portion of a process unit can be reached from at least two opposite directions with the use of 76 meters (250 ft), hose lines if the approach is made from the upwind side of the fire. Offshore hydrants are located at the main accessways at the edge of the platform for each module. Normal access into a location should not be impeded by the placement of monitors or hydrants. This is especially important for heavy crane access during maintenance and turnaround activities. 

Set the airbrush approximately 160 mm above a rotating turntable (we used a turntable with a rotating velocity of 33rpm adapted in-house with a Perspex platform of diameter 430 mm) on which the SPCEs are taped at the edge. Cover the terminal ends of the SPCEs with a piece of tape or card to prevent them from being covered in polyurethane.—Set the turntable running and spray the SPCEs with 20 ml of the 1.5% polyurethane solution at an air pressure of 140 kPa. 

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