TSSA EDM-B Exam case studies
TSSA EDM-B Exam · Put your knowledge to work in context.
The EDM-B designation refers to Ontario's Elevating Devices Mechanic certification, administered within the framework regulated by the Technical Standards and Safety Authority (TSSA), Ontario's public safety regulator for Elevating & Amusement Devices, Ski Lifts, Fuels, Boilers & Pressure Vessels and Operating Engineers. The credential is intended for tradespeople who install, maintain, repair, and test elevators, escalators, dumbwaiters, and related conveying equipment in Ontario, and who must demonstrate both practical competence and regulatory knowledge. The TSSA EDM-B Exam case studies are 5 cases and about 2,406 words.
1Hydraulic Elevator Settling and Slow Down Travel
You are the EDM-B mechanic called to a 22-year-old, two-stop hydraulic elevator in a three-storey office building. The car serves P1 and the ground floor, travel 4.2 m, rated 1,150 kg, single-bottom jack, 180 mm plunger.
523 words, about 3 min2Escalator Defects Before Station Opening
At a busy subway station, you are assigned to a 15-year-old escalator with a 5.5 m rise, 1,000 mm step width, and a 0.5 m/s rated speed. During a routine maintenance visit at 06:30, before the station opens, you observe: the right handrail moves noticeably slower than the steps; two adjacent comb teeth are missing at the lower landing; the skirt panel on the left side has a 5 mm gap at the step; and the step demarcation strips on four steps are worn through.
493 words, about 2 min3Outdoor Platform Lift Gate Interlock and Sill Mismatch
An outdoor inclined platform lift serves a 1.2 m rise at a public library. It was installed in 2014 and has a 900 mm by 1,200 mm platform, a folding seat, and a key-operated control.
470 words, about 2 min4Dumbwaiter Door Interlock and Bypassed Upper Limit
A small restaurant has a 100 kg capacity dumbwaiter serving the basement prep kitchen and the main floor. The hoistway door at the main floor is a bi-fold type with a mechanical latch; the car is at the basement.
456 words, about 2 min5Traction Elevator Entrapment Below Landing
At a 12-storey condominium, a 2011 gearless traction elevator with eight stops and a rated speed of 1.75 m/s stops 300 mm below the 7th floor with the doors closed. The passengers use the emergency phone; the building superintendent arrives and, using the emergency door key, opens the hoistway door at the 7th floor, revealing the car floor 300 mm below the landing.
464 words, about 2 min