Risk Assessment & Safe Working Practice

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Daniel Lenard Johns
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1 RA Ref Number: 07a Revision: 4 Project/Job Number Reference Insert Job Number Approval Date: 30/03/2018 RA Description: HAV s (Hand s) Next Review Date: 01/04/2019 Notes: Please refer to Safe Working Practices 07a for definitions of items in this assessment. Created by: Lee Davies Risk Assessment Method & Scoring The summary risk assessment is calculated as Likelihood x Consequence and categorised as follows; 1 to 6 = 7 to 16 = 17 to 25 = High Risk Issued by: Issue Date: Insert Name Insert Date TASK HAZARDS PERSONS AFFECTED INITIAL RISK LEVEL CONTROL MEASURES REVISED RISK LEVEL Use of power tools M18CDP-202C M18CID-202C Maximum Use Per Day - Per = 5 Hours Tool = Vibration Magnitude = 5m/s Daily Exposure = 4.0 m/s A(8) (based on 5 hours use) Total Exposure Points = 250 (based on 5 hours use) ing Teams must rotate (share) drilling tasks. s must wear safety gloves. s must keep warm whilst carrying out drilling tasks. s must take regular breaks whilst carrying out drilling tasks. s must operate the tool as per manufacturer s guidelines. Maximum Use Per Day - Per = 2 Hours Tool = Vibration Magnitude = 12m/s Daily Exposure = 6.0 m/s A(8) (based on 2 hours use) Total Exposure Points = 576 (based on 2 hours use) ing Teams must rotate (share) tasks. s must wear safety gloves. s must keep warm whilst carrying out tasks. s must take regular breaks whilst carrying out tasks. s must operate the tool as per manufacturer s guidelines. RA Number: 07a - Issue Revision: 4 Page 1 of 9

2 HD18HX-32C HD18SX-32C HD18JSB-32C Maximum Use Per Day - Per = 2 Hours Tool = Vibration Magnitude = 12.5m/s Daily Exposure = 6.3 m/s A(8) (based on 2 hours use) Total Exposure Points = 626 (based on 2 hours use) ing Teams must rotate (share) drilling tasks. s must wear safety gloves. s must keep warm whilst carrying out drilling tasks. s must take regular breaks whilst carrying out drilling tasks. s must operate the tool as per manufacturer s guidelines. Maximum Use Per Day - Per = 0.5 Hours Tool = Vibration Magnitude = 23 m/s² Daily Exposure = 5.8 m/s² A(8) (based on 0.5 hours use) Total Exposure Points = 529 (based on 0.5 hours use) ing Teams must rotate (share) cutting tasks. s must wear safety gloves. s must keep warm whilst carrying out cutting tasks. s must take regular breaks whilst carrying out cutting tasks. s must operate the tool as per manufacturer s guidelines. Maximum Use Per Day - Per = 4 Hours Tool = Vibration Magnitude = 6.4 m/s² Daily Exposure = 4.5 m/s² A(8) (based on 4 hours use) Total Exposure Points = 328 (based on 4 hours use) ing Teams must rotate (share) cutting tasks. s must wear safety gloves. s must keep warm whilst carrying out cutting tasks. s must take regular breaks whilst carrying out cutting tasks. s must operate the tool as per manufacturer s guidelines. RA Number: 07a - Issue Revision: 4 Page 2 of 9

3 C18HZ-32B DeWalt DC223KA DeWalt DCD785L1GP Maximum Use Per Day - Per = 3 Hours Tool = Vibration Magnitude = 7.2 m/s² Daily Exposure = 4.4 m/s² A(8) (based on 3 hours use) Total Exposure Points = 311 (based on 3 hours use) ing Teams must rotate (share) cutting tasks. s must wear safety gloves. s must keep warm whilst carrying out cutting tasks. s must take regular breaks whilst carrying out cutting tasks. s must operate the tool as per manufacturer s guidelines. Maximum Use Per Day - Per = 2 Hours Tool = Vibration Magnitude = 11 m/s Daily Exposure = 5.5 m/s A(8) (based on 2 hours use) Total Exposure Points = 484 (based on 2 hours use) ing Teams must rotate (share) drilling tasks. s must wear safety gloves. s must keep warm whilst carrying out drilling tasks. s must take regular breaks whilst carrying out drilling tasks. s must operate the tool as per manufacturer s guidelines. Maximum Use Per Day - Per = 6 Hours Tool = Vibration Magnitude = 5 m/s Daily Exposure = 4.3 m/s A(8) (based on 6 hours use) Total Exposure Points = 300 (based on 6 hours use) ing Teams must rotate (share) drilling tasks. s must wear safety gloves. s must keep warm whilst carrying out drilling tasks. s must take regular breaks whilst carrying out drilling tasks. s must operate the tool as per manufacturer s guidelines. RA Number: 07a - Issue Revision: 4 Page 3 of 9

4 DeWalt D25013N Hilti TE54 Drills/Jigsaws Generic Maximum Use Per Day - Per = 4 Hours Tool = Vibration Magnitude = 7 m/s Daily Exposure = 5.0 m/s A(8) (based on 4 hours use) Total Exposure Points = 392 (based on 4 hours use) ing Teams must rotate (share) drilling tasks. s must wear safety gloves. s must keep warm whilst carrying out drilling tasks. s must take regular breaks whilst carrying out drilling tasks. s must operate the tool as per manufacturer s guidelines. Maximum Use Per Day - Per = 1.5 Hours Tool = Vibration Magnitude = 11 m/s Daily Exposure = 4.8 m/s A(8) (based on 1.5 hours use) Total Exposure Points = 363 (based on 1.5 hours use) ing Teams must rotate (share) drilling tasks. s must wear safety gloves. s must keep warm whilst carrying out drilling tasks. s must take regular breaks whilst carrying out drilling tasks. s must operate the tool as per manufacturer s guidelines. s must consult the manufactures guide regarding vibration levels. On obtaining vibration levels, adhere to guidelines within the safety charts. ing Teams must rotate (share) drilling tasks. s must wear safety gloves. s must keep warm whilst carrying out drilling tasks. s must take regular breaks whilst carrying out drilling tasks. s must operate the tool as per manufacturer s guidelines. RA Number: 07a - Issue Revision: 4 Page 4 of 9

5 Safe Working Practice: 07a HAV s (Hand s) 1 PURPOSE: The purpose of this guide is to highlight safe working practices for: HAV s (Hand Arm Vibrations). What is hand arm vibration? Hand arm vibration is vibration transmitted into your hands and arms when you use handheld powered work equipment. Too much exposure to hand arm vibration can cause hand arm vibration syndrome (HAVS) and carpal tunnel syndrome. What is hand arm vibration syndrome? HAVS affects the nerves, blood vessels, muscles and joints of the hand, wrist and arm. It can become severely disabling if ignored. It includes vibration white finger, which can cause severe pain in the affected fingers. What is carpal tunnel syndrome? Carpal tunnel syndrome is a nerve disorder which may involve pain, tingling, numbness and weakness in parts of the hand, and can be caused by, among other things, exposure to vibration. What are the early signs and symptoms to look out for? Tingling and numbness in the fingers (which can cause sleep disturbance). Not being able to feel things with your fingers. Loss of strength in your hands (you may be less able to pick up or hold heavy objects). In the cold and wet, the tips of your fingers going white then red and being painful on recovery (vibration white finger). When are You at risk? You are at risk if you regularly use handheld or hand guided power tools and machines such as: concrete breakers, concrete pokers; sanders, grinders, disc cutters, jigsaws; hammer drills; chipping hammers; chainsaws, brush cutters, hedge trimmers, powered mowers; You are also at risk if you hold work pieces which vibrate while being processed by powered machinery such as pedestal grinders. RA Number: 07a - Issue Revision: 4 Page 5 of 9

6 THIS INSTRUCTION MUST NOT BE TREATED AS A SUBSTITUTE FOR TRAINING. 2 PROTECTIVE CLOTHING AND EQUIPMENT OPERATORS MUST WEAR CDI issued Work Gloves. CDI issued Safety Glasses (impact resistant) CDI issued Ear Defenders 3 BEFORE WORK Before you carry out a task that requires the use of a piece of machinery, i.e. drills, and jigsaws you must ensure that you have read and understood the HAV user guide which has been provided with the power tool. Always select the right tool for each job (to do the job more quickly and expose you to less hand arm vibration). Check tools before using them to make sure they have been properly maintained and repaired to avoid increased vibration caused by faults or general wear. Make sure cutting tools are kept sharp so that they remain efficient. Encourage good blood circulation by keeping warm and dry, when necessary, wear gloves, a hat, and waterproofs. Massage and exercise your fingers before work and during work breaks. 4 DURING WORK Always comply with the use times for each piece of equipment. Where possible divide the tasks up, so that one person does not carry out the task for the whole job. Always be aware of any aches / pains that develop in your arms / wrists/ hands during work. If any are found stop work straight away. Report them straight away by calling the CDI office. The CDI accident book must be filled in, you will be given a copy of the report. If symptoms persist report to your doctor, and ask for a report on the problem. 5 AFTER WORK You must keep CDI fully informed of all developments with any injuries you report. You must bring any reports / doctors notes into the office. CDI GROUP LTD PLACES GREAT IMPORTANCE ON EVERYONE'S SAFETY: FAILURE TO COMPLY WITH ANY OF THE ABOVE MAY RESULT IN DISCIPLINARY ACTION RA Number: 07a - Issue Revision: 4 Page 6 of 9

7 HAV Exposure Calculator The table below is for calculating daily vibration exposures. All you need is the vibration magnitude (level) and exposure time. The ready-reckoner covers a range of vibration magnitudes up to 40 m/s2 and a range of exposure times up to 10 hours. The exposures for different combinations of vibration magnitude and exposure time are given in exposure points instead of values in m/s2 A(8). You may find the exposure points easier to work with than the A(8) values: exposure points change simply with time: twice the exposure time, twice the number of points; exposure points can be added together, for example where a worker is exposed to two or more different sources of vibration in a day; the exposure action value (2.5 m/s2 A(8)) is equal to 100 points; the exposure limit value (5 m/s2 A(8)) is equal to 400 points; Vibration Magnitude m/s m 30m 1h 2h 3h 4h 5h 6h 8h 10h Daily Exposure Time RA Number: 07a - Issue Revision: 4 Page 7 of 9

8 Using the Calculator 1. Find the vibration magnitude (level) for the tool or process (or the nearest value) on the grey scale on the left of the table. 2. Find the exposure time (or the nearest value) on the grey scale across the bottom of the table. 3. Find the value in the table that lines up with the magnitude and time. The illustration shows how it works for a magnitude of 5 m/s2 and an exposure time of 3 hours: in this case the exposure corresponds to 150 points. 4. Compare the points value with the exposure action and limit values (100 and 400 points respectively). In this example the score of 150 points lies above the exposure action value. The colour of the square containing the exposure points value tells you whether the exposure exceeds, or is likely to exceed, the exposure action or limit value: Above limit value Likely to be above limit value Above action value Likely to be above action value Below action value 5. If a worker is exposed to more than one tool or process during the day, repeat steps 1 3 for each one, add the points, and compare the total with the exposure action value (100) and the exposure limit value (400). RA Number: 07a - Issue Revision: 4 Page 8 of 9

9 Risk Assessment & Safe Working Practice Hand Safety Guide RA Number: 07a - Issue Revision: 4 Page 9 of 9

Hand Arm Vibration Guidance. Kevin Burrows

Hand Arm Vibration Guidance. Kevin Burrows Hand Arm Vibration Guidance Kevin Burrows What is HAVS? A disorder which affects the blood vessels, nerves and muscles of the hand, wrist and forearm. Can be severely disabling. Also known as Vibration