====== HW4 - Safety Assessment ======
Your task is to perform a safety assessment of an application in a factory that assumes physical human-robot interaction.

Each student has a unique assignment, which can be found in [[https://cw.felk.cvut.cz/brute/student/course/HRO/HW4 | BRUTE]]. To see the assignment, click on "your input data" in [[https://cw.felk.cvut.cz/brute/student/course/HRO/HW4 | HW4 in  BRUTE]].

{{ :courses:hro:hws:input_data.png |}}


|Maximum score | 9 |
|Deadline | 04.05.2025 | 23:59:59 |


===== Instructions =====
You are given a simulation that serves as a description of the application. Each assignment has its own additional requirements (see your assignment).

The tasks are the same for every assignment:

Create a safety evaluation of the application. The evaluation should include the following (the section and table numbers are taken from {{ :courses:hro:tutorials:hro_phri_methodology.pdf |pHRI Methodology}}):

  * Application analysis (Sec 3.1)
    * Answer all 6 questions
    * For yes/no question, provide also a short explanation why/from where/how
    * For properties of gripper/robot, cite a source of your information
      * e.g., "The maximum velocity of the robot is 1.5 m/s, which can be found in the UR10 documentation [1]"
  * Safety analysis (Sec 3.2)
    * Answer the two questions
    * Create 5 possible hazards and provide safety evaluation for each of them
      * Use Risk Matrix (Table 1) or Pilz Hazard Rating (Equation 1)
        * The choice is yours. You can also use one for one hazard and the other for another hazard, or use both for all hazards...
      * Explain and justify your choice for every parameter of the selected evaluation method
        * e.g., severity and occurrence for Risk Matrix
        * write full sentence, e.g., "The severity of the hazard is High because it can cause a serious injury to a human worker, such as a broken arm or leg"
      * Based on the final risk, provide a safety measure and compute new risk after the measure
        * again, explain and justify your choice
      * At least 3 of the hazards must have the rating "worse" than negligible before you apply a safety measure
  * Risk Reduction Analysis (Sec 3.3)
    * Answer the two questions

===== General information and requirements =====
  * Submit a PDF file with clear and readable content
    * it can be scanned written text, but the text must be easily readable
    * for risk analysis it is probably the best to use a table
    * if something will be hard to understand from the document, you will get no points for the given part
  * Put number of your variant and printscreen of the simulation on the first page
  * Try to describe and justify everything as best as you can. Otherwise, the lab tutor may reduce you score
  * If you use methods like PFL or SSM to help with your analysis or as a measure. But you must provide a justification (usually a computation)
  * For anything that can be found in the documentation of robot or gripper (e.g., max velocity or max force), cite the source where you found the information
  * You can insert images/printscreens from the simulation if it helps with your analysis or justification
  * You can write in English, Czech, or Slovak based on your preference

===== Scoring =====
  * 3 points for correct Application Analysis
  * 5 points for correct Safety analysis
    * more than 1 point can be reduced for 1 hazard if it contains a lot of mistakes or an apparent error
    * 0 points will be given if you don't provide at least 3 hazards with rating "worse" than negligible before measures
    * full points will be given only if the hazards are well described and justified
    * full points will be given only if the measures are well described and justified
    * full points will be given only if the hazards are diverse, i.e., cover more than one type of hazard
    * at least one hazard should work with the properties of the robot or gripper
      * otherwise, 0 points will be given
  * 1 point for correct Risk Reduction analysis

===== AI Rules =====
We would like to remind you that AI usage in homework is generally not allowed. And, every use should be cited/mentioned based on [[https://www.cvut.cz/sites/default/files/content/d1dc93cd-5894-4521-b799-c7e715d3c59e/en/20231003-methodological-guideline-no-52023.pdf | AI Rules]]. 
Unjustified and unauthorized usage of (generative) AI will result in point reduction. The course tutors reserve a right to ask students additional questions in the case of suspected AI use.