{"id":105,"date":"2025-11-15T22:34:09","date_gmt":"2025-11-15T22:34:09","guid":{"rendered":"https:\/\/engprojects.tcnj.edu\/stepwise\/?page_id=105"},"modified":"2025-11-18T03:25:35","modified_gmt":"2025-11-18T03:25:35","slug":"hazard-analysis","status":"publish","type":"page","link":"https:\/\/engprojects.tcnj.edu\/stepwise\/hazard-analysis\/","title":{"rendered":"Hazard Analysis"},"content":{"rendered":"\n

Severity Table<\/h3>\n\n\n\n
Severity Table<\/td><\/tr>
Rating<\/td>Severity of Effect<\/td>Consequence<\/td>Treatment<\/td><\/tr>
Critical<\/td>Re-injury of the wound; fracture<\/td>Reversible injury<\/td>Hospital stay<\/td><\/tr>
Serious<\/td>Gash or severe muscle injury<\/td>Reversible injury<\/td>Ambulant treatment or self-treatment<\/td><\/tr>
Minor<\/td>Pressure marks, small cuts or scratches<\/td>Discomfort<\/td>Self-treatment<\/td><\/tr>
Negligible<\/td>No harm<\/td>–<\/td>–<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Occurrence Table<\/h3>\n\n\n\n
Rating<\/strong><\/td>Probability of Occurrence<\/strong><\/td><\/tr>
Often<\/td>Likely to happen<\/td><\/tr>
Occasionally<\/td>Can happen, but not likely<\/td><\/tr>
Rarely<\/td>Unlikely to happen<\/td><\/tr>
Improbable<\/td>Highly unlikely to happen<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

RPN Table<\/h3>\n\n\n\n
<\/td><\/td>Severity<\/td><\/tr>
<\/td><\/td>Negligible<\/td>Minor<\/td>Serious<\/td>Critical<\/td><\/tr>
Probability<\/td>Often<\/td>R1<\/td>R2<\/td>R3<\/td>R3<\/td><\/tr>
Occasionally<\/td>R1<\/td>R1<\/td>R2<\/td>R3<\/td><\/tr>
Rarely<\/td>R1<\/td>R1<\/td>R1<\/td>R3<\/td><\/tr>
Improbable<\/td>R1<\/td>R1<\/td>R1<\/td>R2<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

R1 – Acceptable Risk<\/p>\n\n\n\n

R2 – As Low As Reasonably Practical<\/p>\n\n\n\n

R3 – Unacceptable Risk<\/p>\n\n\n\n

Hazard and Risk Assessment Spreadsheet + Mitigation<\/h3>\n\n\n\n
Hazard<\/td>Hazard Event<\/td>Harm<\/td>Severity<\/td>Occurence<\/td>Total Risk<\/td>Root Cause<\/td>Mitigation<\/td><\/tr>
Pinching between components<\/td>Skin caught in joint or strap<\/td>Pain, redness, bruising<\/td>Minor<\/td>Rarely<\/td>R1<\/td>Poor strap design<\/td>Cover exposed hinges, use soft padding<\/td><\/tr>
Ankle sprain<\/td>Joint is torqued beyond normal range<\/td>Bruising, ligament damage, pain<\/td>Serious<\/td>Occasional<\/td>R2<\/td>Potential software issues, or device failure<\/td>Addition of hard stop, clutch , and manual shutoff prevents continual torque beyond desired range<\/td><\/tr>
Electrical shock<\/td>Skin contact with electrical components<\/td>Small burns, muscle twitching <\/td>Minor<\/td>Rarely<\/td>R1<\/td>Skin contact with electronics<\/td>House major electronic components<\/td><\/tr>
Heat from electronics<\/td>Skin contact electrical components<\/td>Potential for 2nd to third degree burns<\/td>Serious<\/td>Occasional<\/td>R2<\/td>Overheating of electrical components<\/td>All major electrical components are housed, insulated, and properly ventilated; device power consumption does not exceed 50% of potential device draw to avoid excess heat output from electronics<\/td><\/tr>
Ankle Sprain<\/td>Joint is contorted uncontrolled beyond the acceptable range<\/td>Pain, Bruising, potential ligament and cartilage damage<\/td>Serious<\/td>Improbable<\/td>R1<\/td>Device failure to constrain lateral motion<\/td>Device is used within design range for weight and activity intensity to avoid frame level failures<\/td><\/tr>
Tightening\/Strap Failure<\/td>Strap\/ratchet mechanism used to tighten the device comes undone while in use<\/td>Sudden loss of support and risk of ankle injury<\/td>Serious<\/td>Rarely<\/td>R1<\/td>Improper fastening<\/td>Include clear fastening instructions, implement periodic inspection by clinicians for wear<\/td><\/tr>
Battery Failure (if going in powered system direction)<\/td>Battery dies while device is in use<\/td>Sudden loss of power may result in  ankle motion that is not normal<\/td>Minor<\/td>Occasional<\/td>R1<\/td>Low battery capacity or poor charge monitoring<\/td>Add battery-level indicator, low-battery notifications, and fail-safe default settings<\/td><\/tr>
Tripping Hazard<\/td>Things protruding out of the device or cables catching on things\/clothes<\/td>Fall, sprains, bruising<\/td>Serious<\/td>Rarely<\/td>R1<\/td>Inefficient design, loose cables<\/td>Aim for minimal profile, route cables internally <\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

Severity Table Severity Table Rating Severity of Effect Consequence Treatment Critical Re-injury of the wound; fracture Reversible injury Hospital stay Serious Gash or severe muscle injury Reversible injury Ambulant treatment or self-treatment Minor Pressure marks, small cuts or scratches Discomfort Self-treatment Negligible No harm – – Occurrence Table Rating Probability of Occurrence Often Likely to […]<\/p>\n","protected":false},"author":664,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"ngg_post_thumbnail":0,"footnotes":""},"class_list":["post-105","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/engprojects.tcnj.edu\/stepwise\/wp-json\/wp\/v2\/pages\/105","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/engprojects.tcnj.edu\/stepwise\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/engprojects.tcnj.edu\/stepwise\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/engprojects.tcnj.edu\/stepwise\/wp-json\/wp\/v2\/users\/664"}],"replies":[{"embeddable":true,"href":"https:\/\/engprojects.tcnj.edu\/stepwise\/wp-json\/wp\/v2\/comments?post=105"}],"version-history":[{"count":0,"href":"https:\/\/engprojects.tcnj.edu\/stepwise\/wp-json\/wp\/v2\/pages\/105\/revisions"}],"wp:attachment":[{"href":"https:\/\/engprojects.tcnj.edu\/stepwise\/wp-json\/wp\/v2\/media?parent=105"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}