CHECKLIST OCRA
A SHORTENED PROCEDURE FOR THE IDENTIFICATION OF UPPER LIMB OVERLOAD IN REPETITIVE TASKS
_____________________________________________________________________________________COMPILED BY/I ……………………………………………………… DAY…………
_____________________________________________ ____________________________________________________________ PAGE 1
DENOMINATION OF THE WORKPLACE AND BRIEF DESCRIPTION OF THE TASK……………………………………….
……………………………………….……………………………………….……………………………………………………………………………….
-how many woorkplaces are identical or very similar……………………………………….
-how many shifts are present in a day ……………………………………….
-how many workers work in these workplaces during a day and considering all the identical workplaces……………………………………….
| DESCRIPTION |
MINUTES |
|
| SHIFT DURATION |
official |
|
| real |
||
| OFFICIAL PAUSES |
contractual |
|
| OTHER PAUSES (other than the official ones) |
||
| LUNCH BREAK |
official |
|
| real |
||
| NON REPETITIVE TASKS (eg: cleaning, supplies, etc) |
official |
|
| real |
||
| NET DURATION OF REPETITIVE TASK/S |
||
| No. Of UNITS (or cycles) |
planned |
|
| real |
||
| NET CYCLE TIME (secs.) |
||
| OBSERVED CYCLE TIME |
||
TYPE OF WORK INTERRUPTION (WITH PAUSES OR OTHER VISUAL CONTROL TASKS) (max. score allowed = 10).
Choose one answer. It is possible to choose intermediate values.
0 - there is an interruption of at least 8/10 minutes every hour in the repetitive work (also count the lunch break) or the recovery period in included in the cycle.
2 - there are 2 interruptions in the morning and
3 - there are 2 pauses, lasting at least 8-10 minutes each in the 6-hour shift (without lunch break); or, 3 pauses, plus the lunch break, in a 7-8-hour shift.
4 - there are 2 pauses, plus the lunch break, lasting at least 8—10 minutes each over a 7-8 hour shift (or 3 pauses without the lunch break), or 1 pause of at least 8-10 minutes over a 6-hour shift;
6 - there is a single pause, lasting at least 10 minutes, in a 7-hour shift without lunch break; or, in an 8-hour shift there only is a lunch break (the lunch break is not counted among the working hours).
10 - there are no real pauses except for a few minutes (less than 5) in a 7 to 8-hour shift..
The first hour the last hour
Shif duration in min.………………. draw the breaks in the shift. c RECOVERY
____________________________________________________________________________ PAGE 2
ARM ACTIVITY AND WORKING FREQUENCY WITH WHICH THE CYCLES ARE PERFORMED
(max. score possible= 10)
Choose one answer for each upper limbs. It is possible to use intermediate scores. If both static and dynamic actions are present:
•CONSIDER both static and dynamic actions •As most representative of the task CHOOSE the one with the highest risk value.
DYNAMIC TECHNICAL ACTIONS
0 -arm movements are slow. frequent short interruptions are possible (20 actions per minute).
1 -arm movements are not too fast. short interruptions are possible (30 actions per minute).
3 -arm movements are quite fast (about 40) but short interruptions are possible
4 -arm movements are quite fast. only occasional and irregular short pauses are possible (about 40 actions per minute).
6 -arm movements are fast. only occasional and irregular short pauses are possible (about 50 actions per minute).
8 -arm movements are very fast. the lack of interruptions makes it difficult to keep the pace, which is about 60 actions per minute
10 -very high frequencies: 70 actions per minute, or more. absolutely no interruptions are possible
STATIC TECHNICAL ACTIONS
2,5 - an object is held for at least 5 consecutive seconds secs., incurring one or more static actions for 2/3 of the cycle (or observation ) time
4,5 - an object is held for at least 5 consecutive seconds secs., incurring one or more static actions for 3/3 of the cycle (or observation ) time .
| R |
L |
|||||
| Number of actions in the cycle |
||||||
| Frequency of actions per minute |
L R |
|||||
| Possibility of short interruptions |
c c
FREQUENCY
_____________________________________________________________________________________ PRESENCE OF WORKING ACTIVITIES INVOLVING THE REPEATED USE OF FORCE IN THE HANDS-ARMS (AT LEAST ONCE EVERY FEW CYCLES DURING ALL THE TASK ANALYSED: c YES c NO
Can be signed more than one score and sum them for obtaining the final score
IF YES:
| THE WORKING ACTIVITY REQUIRES THE USE OF ALMOST MAXIMUM FORCE FOR: (8 points or more on the Borg scale) c pulling or pushing levers c pushing buttons c closing or opening c pressing or handling components c using tools c Lifting or handling objects |
6 - 2 seconds every 10 min 12 - 1 % of the time 24 - 5 %of the time 32 -over 10% of the time (*) |
| THE WORKING ACTIVITY REQUIRES THE USE OF STRONG FORCE FOR: ( c pulling or pushing levers c pushing buttons c closing or opening c pressing or handling components c using tools c Lifting or handling objects |
4 - 2 seconds every 10 min 8 - 1 % of the time 16 -- 5 %of the time 24 - over 10% of the time (*) |
| THE WORKING ACTIVITY REQUIRES THE USE OF MODERATE FORCE FOR: (3-4 points on the Borg scale) c pulling or pushing levers c pushing buttons c closing or opening c pressing or handling components c using tools c Lifting or handling objects |
2 - 1/3 of the time 4 - about half the time 8 - nearly all the time |
L R
(*)THIS CONDITION IS ABSOLUTELY NOT ACCEPTABLE FORCE c c
PAGE 3
PAGE 4
 |
§ PRESENCE OF ADDITIONAL RISK FACTORS: only choose one answer per group of questions
2 -.Gloves inadequate ( which interfere with the handling ability required by the task) are used for over half the time
2 - the working gestures required imply a countershock ( such as e.g., hammering, or hitting with a pick over hard surfaces, etc.) with frequency
of 2 time per minute or more
2 - the working gestures imply a countershock (using the hand as a tool) with frequency of 10 time per hour or more
2 - exposure to cold or refrigeration (less than 0 degree) for over half the time
2 - vibrating tools are used for 1/3 of the time o more. For tools with high level of vibrations use score 4.
2 - the tools employed cause compressions of the skin (reddering, callosities, blisters, etc..)
2 - precision tasks are carried out
for over half the time (tasks over areas smaller than 2-
2 - more than one additional factor is present at the same time and , overall, they occupy over half the time
3 - more than one additional factor is present at the same time and , overall, the occupy the whole of the time
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1 working pace set by the machine, but there are “breathing spaces” in which the working rhythm can either be slowed down or accelerated.
2 - working pace completely determined by the machine
|
R L
ADDITIONAL c c
EVALUATION OF FINAL CHECKLIST SCORE FOR TASK / WORK
(Recovery+Frequency+Force+Posture+Additional) x “net duration of repetitive task multiplier”
MULTIPLIERS FOR THE TOTAL DURATION OF REPETITVE TASK / TASKS IN THE SHIFT
| 60-120 min = 0,5 121-180 min = 0,65 181-240 min = 0,75 |
241-300 min = 0,85 301-360 min = 0,925 361-420 min = 0,95 |
421-480 min = 1 sup.480 min = 1,5 |
Checklis OCRA score R c L c
LINK BETWEEN OCRA INDEX AND CHECKLIST OCRA FINAL SCORE
| CHECK LIST |
OCRA |
AREA |
RISK |
| UP TO 7,5 |
2,2 |
GREEN |
ACCEPTABLE |
| 7,6 – 11 |
2,3 – 3,5 |
YELLOW |
BORDERLINE O VERY LOW |
| 11,1 - 14.0 14,1 – 22,5 |
3,6 - 4,5 4,6 – 9 |
LOW RED AVERAGE RED |
LOW AVERAGE |
| > 22,6 |
> 9,1 |
VERY RED OR VIOLET |
HIGH |