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MidFa07Sol

MidFa07Sol - IE 327 — MIDTERM(FaO NAME(k 94 There are 5...

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Unformatted text preview: IE 327 — MIDTERM (FaO?) NAME (k 94 There are 5 problems on 5 pages worth 100 points. The last page contains formulas, which you may tear off. Closed bookfnotes. Show work for partial credit. Clearly state any assumptions you make. Place the ﬁnal answer in the space provided. I have neither given nor received aid on this exam. (signed and dated) 1) (16 pts) Use the following data to identify the critical job to focus your efforts on. a) (4) What are two names given fgr the top chart? TCIP 1am: Cum Zinc! 80—10 b) (4) Explain the basis for one name. 960.: on: \L a uRI‘es Chi/9w EH 2070 0 €- 10 B S c) +1 Extra Credit — Explain the basis for the second “am“? 6Q momma-r umeoo mm d) (3) Which job(s) would you focus your efforts on? Why? M’Rlﬂ‘fwﬂﬂ C F e) (2) What is the name of the second chart? @MTT f) (3) Based on the second chart which job(s) would you focus your efforts on? Why? “mama: ”m “unan- d inuredients “BEER“- —nﬂEﬂ--- c) ”(5) Suggest one methods improvement for —nu diumsmougﬂ —nna:Il-- mm was an an b) (2) What the name of this chart? We" Dump into at 3) (32 pts) a) (10) The worker shown below tests piston rings. He picks up an untested ring from the left-side stand with his left hand, tries to pass it through the left-hand slot (a no-go slot, meaning a good ring should not go through). He then pulls the ring back and tries the right-hand slot (a go slot, meaning a good ring should go through). As it goes through, he picks it up with his right hand and places it in the right-side stand. His quota is set at 20 rings per minute for a 450 minute work day (i.e. 30 minutes of lunch). Calculate the risk for CTD injury using the form on the next page. Assume the pinch force is only 15% of maximum. b) (20) Redesign the job/workstation utilizing principles of work design so as to decrease the risk of injury. Use the format shown below for this. Obviously, the company wants to maintain productivity at current levels. You may add more lines to the table should need it. Specific Modification Principle of Work Design Used (Why is this better?) _ 01‘ HQ'OHTOF WM}: SET HT Eleow par {—Hijlél-H" sums firewalls MWMQ TD error/m ,1) Sit Hi: wane \l {37417602, if {wt/mm Sam/Moe 7,) Til—TWOQKSW'OU q, WK (imba- Llldaosﬁnwr (to Down u) ()3? MM (RBr d; timber 5) DQOPDat't/eﬂv \J, 9mm 9mm c) (2) Your changes will reduce the risk for injury by 970 %. was calm 717(6’5 F7 We, CTD Risk Index Job Title: VCR Counter No.: Job Description: Department: Analyst: Cycle Time (in minutes; obtain from videotape) # CycteiDay = (480 —Lunch—Braaks) = C cieTr'me # Parts ! Day (if known) # Handmotions I Cycle # Handmotions I Day (6) x GD) Working Posture Hand Posture 1: Putp Pinch Hand Posture 2: Lateral Pinch Hand Posture 3: Palm Pinch Hand Posture 4: Finger Press Hand Posture 5: Power so —no_—— Typeomeach —IM—_ -. Hand Deviation ‘l: Flexion ' Hand Deviation 2: Extension Hand Deviation 3: Radial Dev. I t a Hand Deviation 4: Ulnar Dev. Forearm Rotation N Elbow Angle Shoulder Abduction Shoulder Flexion Backaeck Angle 9‘. i i i I} is? ‘ {a {.0 E6 (.0 m S. E E r iii <90° <180° 3'18!)0 l% V V @ (D (.0 O C) O O I Q m 3 o an inn (on. low 00 '- a |i Total the Points for the Circled Conditions Posture Factor (Divide (E) by 10) ll Max Grip or Pinch Force Force Factor (Divide (9 IE U‘ V -15) Total the Points for the Circled Conditions Miscellaneous Factor (Divide® by 3) = ' CTD Risk index = .3 x (Frequency + Posture + Force Factors) + .1 x {Miscellaneous Factor) CTDRisklndex=.3x( 3% + f? . + [.0 )+.1x( O 4) (26 pts) For 8 hours a day, an inspector at CAV Glass (the same company with the hot end video) checks for bubble or other defects in the glass funnels (weighing 25 lbs) used in TV picture tubes. As the funnels pass along the conveyor belt, the inspector checks the funnel and lets the good funnels to continue on the conveyor for packing. The defective funnels (about 50% reject rate) are discarded by lifting them and depositing them into a steel trash bin behind the inspector (for recycling). The worker ﬁnds it easiest to stand between the conveyor and the bin, twisting 90° to pick up the funnel and then twisting 130° in the other direction to discard the funnel. The inspector is Sex/pected the check 10 funnels per minute. ND 963‘ :D :0 3— WU, 00012 a) (14) Use the NIOSH lifting guidelines to calculate the LI. LI 3' " , — .9 ““15” [email protected] leop: Sl(}%} Ci *._OO}S if"? 9304:) [i .00 $1¥90)(.3S) 2 c<j ' :r St (Rt) ( ms) (13((WIZ)(l%S-X'q) @ \ .. __,0._, - . .- , - .ooirlzor'ale’ )C 1") PAN?) » ‘i—,.__> 9 “-gwwﬁiugyt— f w l I :mic.qzs>o\mu2>t%m”=“0'6 ‘ 20" i i l"; 25: :3 . S$05 airﬁio ~ 2%.? +1 Extra Credit: What is Feomp at the Lsrsf disc? b) (7) Suggest a simplelcheap redesign with no physical changes to the workplace to reduce the L1 almost to acceptable levels. Show the LI now. {MW/0Q «tom/T2190 ‘3 r: 23“.. . szzslLbsiﬂﬂnétol-’“QWN'biifJ— L 75;: ASS- c) (5) Suggest a second simple/cheap redesign (which may have some physical changes to the workplace) to reduce the L1 almost to acceptable levels. Show the LI now. T we MIST . - ‘ Z 2... 3 4s 51C r)(.m~?>ciso‘)c.2s3m\= W3 cm, 41? Mott-“wows. l 5) (13 pts) a) (3) An 8-hour noise dosimeter reading indicated a dose 150% for John Smith. He spends 4 hours in Room #1 with a noise level of 90 dBA and another 4 hours in Room #2 with an unknown noise level. What is the noise level in Room #2? r aggﬁ n+3. :15 {:4 =7 934374 (E T; Tax ‘8 ¥ “’ dB— b) (3) What should the noise level be in Room #2 for John Smith to remain within OSHA compliance? g+ﬂif *5—8 49 ((0019) 8 gt/ f .1390 e) (7) Given that Room #2 had 8 identical machines, how many of these need to removed to achieve OSHA com iance . Jo. ‘ ‘f I" ?‘?o : (0603.0 [vs 108 J iti/otvéro£3;<‘°@ C? .2 103,0)! + 8.5 (2‘5 £5327 Basin/rm . elf-:60, . “3%; MJWG/dI/Mo [email protected] ...
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MidFa07Sol - IE 327 — MIDTERM(FaO NAME(k 94 There are 5...

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