HRAD 3473 WEEK 6 NOTES
HRAD 3473 WEEK 6 NOTES HRAD 3473
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This 5 page Class Notes was uploaded by Nichole Pike on Monday September 26, 2016. The Class Notes belongs to HRAD 3473 at Oklahoma State University taught by Ryan in Fall 2016. Since its upload, it has received 8 views. For similar materials see Mechanical Equipment and Facility Management in Hotel and Restaurant Administration at Oklahoma State University.
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Date Created: 09/26/16
WEEK 6 HRAD 3473 DISCLAIMER: THESE NOTES WERE TAKEN FROM WHAT WAS RETAINED FROM CLASS LECTURE AND TEXTBOOK READINGS. THESE ARE IN NO WAY COMPREHENSIVE, BUT SHOULD BE USED IN CONJUNCTION WITH CLASS MATERIALS PROVIDED BY THE PROFESSOR. CHAPTER 4 SAFETY AND SECURITY CONTINUED FIRE DETECTION notifier system is computer controlled systemtells us which zone it is in red box is a sprinkler notifier stystem FIRE NOTIFICATION notification should begin prior to emergencybefore the event ex. flight attendant locating emergency exits first reaction is typically fear, training overcomes the fear lack of training is essentially a lack of action some instances there are vibrational notifiers top right is specially designed for over electrical equipmentfills the kitchen with fire retardant have to be on a separate electrical supply that aren’t operable by general publiconly accessible to key people FIRE CONTROL dampera little door installed in ductworkdoor closes and stops the flow of oxygen during a fire all of these are designed to be isolated fire marshal looks for fire zones FIRE SUPRESSION extinguishers are portable sprinkler systembuiltin wet pipe and dry pipe wet pipesystem is full of water big supply points into little delivering systems each sprinkler head has a different device behind it that keeps the valve shut system has to have a completely separate and dedicated water system electric boxes have sensors that notifies the fire department when sprinklers are activated and water is flowing size of pipe is based on coverage of area of building STAND PIPE stand pipegoes from outside the facility to a specific location inside the building does not have water in itdedicated delivery system for water allows the fire departments to hook up pump, etc in order to travel to a certain floor ex. 9 floor in Drummond designed to assist fire fighters to get fire to a destination to fight a fire carry a shorter section of hose hoses are made out of cotton that break down over time so they must be replaced SPRINKLER HEADS fuzzy sprinkler heads are generally located by air vent because of dirt blowing through vents a sprinkler company should clean these; not a staff member little glass tube with colored chemical that ill boil at a certain temperature that will break the glass or melt the plugit can be jarred loose or break and set off sprinkler KITCHEN SUPRESSION specialized fire suppression systems separate and designed for one area since you can’t use water, fire fighting material must be in tank dispersion system is completely different for one type of systemGrade C dry pipedirects retardant into one specific areaonly has air in it right now fusable cable link; when it melts and breaks, the system is activated EGRESS zones are designed to slow down fires fire rated doors, automatically closing ingresssafe entry for first responders SECURITY CONCERNS security focus is on people security issues we are faced with terrorism impaired guests and employees hackers theft human trafficking drug deals abuse murder violence child safetyabduction being proactive and looking for warning signs is very important SECURITY Critical areas parking lots lobby remote areas high traffic areas access areas restaurants anywhere with cash What can you do to help increase security? be observant ask questions to potential threats and acknowledge them head on KEY CONTROL Key Control and Security accessibilitywho should have access and to where? different for different types of facilities electronic systems do this very quickly and easilythere is a trail to tell exactly what key and what time it was used useful for tracking if there was theft, etc rationalewhat’s the plan and the reason behind it based on location and who needs what recordswho has what key retrievalgetting it back if something changes rotationcomputer systems are the best at thischanging the locking key or codecritical lock systems are hard to replace and expensive depending on style replacementhow do I replace keys; people needing different access ex. fire marshal needs access to person with master key IDENTIFY OTHER LIFE SAFETY EVENTS Geography and Nature are often related and go hand in hand Geography Nature Mechanical Humans CHAPTER 5 WATER AND WASTEWATER SYSTEMS WATER SUPPLY DIAGRAM potable supply and fire system supply are two separate systems FLOW AND PSI GPM flow or flow rate appropriate to devices flow rate is 3 GPM per sprinkler head overall flow is 10 GPM for all sprinklers; therefore, there can only be 10 sprinkler heads in order to have appropriate flow and pressure ineffective flow will not be satisfy needs PSI pressure or force service is the pipe in the street (5060 PSI) gravity and friction help us lower the PSI these two are interrelated PUMPS centrifugebrings water in into a part of it and while the wheel is spinning, the fins catch the water and directs (throws) it out another pipe WATER SYSTEMS grouping vertically (stacking) is very important in multistory buildings systems or zones where valves can be turned off for a specific zone LOOP WATER SYSTEMS loop water system allows water to be heated at higher floors so that it doesn’t take as long to get hot water loop system increases the pressure and then brings it back down during the loop to allow the right pressure and flow on multiple stories used in larger homes double is the most common in this system the pumps are running 24/7 can be applied to different sections and shut down different sectionsimportant considerations can put timers in places that close during the night; home, restaurants water supply or service always comes in underground so it doesn’t freeze and goes to a water heater of some sort WATER HEATING OPTIONS have to make decisions based on energy source these on the list are the most common hard to put timers on gas systems electrical resistance is required in some systems but will cost more USAGE AND PAYMENT CALCULATIONS use table to organize these for calculation pressure is not used in calculation because we pay for gallons not pressure VALVES each valve is designed for a specific purpose gateopens and closes; required for gas and typically used in shutoff systems gas valves are typically harder to turn off; maybe only turned off with screwdriver globe valvesadjust valvebathroom faucet electronic valves icemaker ex.
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