Posted at 10.08.2018
During the site visit, I have already been launched to a amounts of scaffolds including suspended, aluminum, mobile and etc. that are currently commonly found on engineering site or manufacturing plant. As stipulated under the Factories (Scaffolds) Rules, a scaffold is any temporary structure on and that a person functions work in virtually any factory, structure site or shipyard or; which enables a person to acquire access to just work at that location or which permits materials to be taken to any place of which such work is conducted. I have observed quite a few areas of the erected scaffolds that will lead to potential risks to the personnel getting injured by working on it and in most severe case might lead to scaffold collapsing.
Hazard (1) - Scaffold lower leg was resting on red brick, uneven ground, soft soil and different level and sizes of plank was use as bottom support. To begin with, red brick is not strong enough to consider the load of the scaffold. When staff member begin working on the scaffold, the increase insert will just cause the red brick to give way cause the scaffold to collapse. 2nd, the unequal ground and the non-uniform stop that your scaffold is erected on will definitely cause the weight circulation to be concentrate more on a side than the other. In the event where the scaffold is raise higher, the whole structure might commence to sway and might just topple off the ground.
Control strategy - Sole bowl of the same height and good durability is being used. It provides better base base for soil and ground condition that is not that good. For event when the ground determined for erecting a scaffold must be done over a uneven ground, Variable base plate are being use to appeal to the height different, this will ensure that the weight of the scaffold are being consistently distributed on the list of legs. Base dish should be produced of metal to be able to carry the strength to carry the requirements in it. What to note that is the fact that the base dish shouldn't be placed protruding out of the sole plate cause the load will never be evenly distributed on the only real panel. Approved scaffold contractor should be around when the scaffold are being erected as under the "FACTORIES (SCAFFOLDS) Rules", it's the duty of them to ensure therequirement are being completed. We can also increase scaffold balance by tying it to a recognized structure.
Hazard (2) - The working systems are also a problem cause some of it are seen with simply a solo timber plank or material decking, Firstly timber planks were detected to have split around it, an indicator it might give way when excessive fill is exerted onto it. Metallic decking also show indication of corrosion. Because of the insufficient decking or planks, the working program become having limited space to work or walk, which might led to worker dropping down. Even for platform that are carefully deck or plank, materials, dirt and tools were notice to been place on it as a convenient method for the personnel to work and storage their thing they might dependence on few task to prevent walking up and down the scaffold. Sometime more than the allowable staff were working on the same bay. All this is merely creating more chances for worker to trip and fall season, because of the item lying down on the program and also employee have minimal space to work around. In addition, it cause the strain and weight exerted on the program to increase which most properly will go beyond the quantity of weight that the websites are able to carry. Decking or planks are also witnessed to just being laid over without being secure so it has the trend to topple. The plank and steel decking consist of different width and period which create mismatch along the side of the decking or plank, that will cause the staff member to trip.
Control measure - Steel decking and timber planks are used based on the same thickness and length to guarantee the program being laid will be flushed. In the case where it need to be overlay to the other, the overlapping area should be beveled or chamfer such that it will not be at right perspective to avoid tripping by the workers. Material decking with locking device and anti-skid surface are being used to tightly secure the program to the scaffold to avoid any tipping or uplift during utilization, it also lower the probability of workers skidding occurred at the system. The Housekeeping will be carried out regularly to clear off any debris (i. e. building materials, concrete etc) misuse, kept on the platform to ensure safer walking or working. This technique is crucial predicated on factories regulation 13 to be able to reduce the threat of employed in it and extra unwanted loads is being reduced. Inspection have to be carried out on the program periodically, so that plank that have learn to warp or crack and metallic decking which have learn to corrode or stiffener that are deteriorating will be removed and replaced with a fresh one. In the event of repairing the harm scaffold, no one shall be permitted to on it except for the approving company who is executing the task. The numbers of worker working at any one time are limited so as to prevent exceeding the working load limit. Only 3 personnel with tools and materials should be allowed on the program at any one time, also the platform should be at least be 500mm width so as to create the footing space under mother regulation.
Hazard (3) - No ladder or stair was installed in the scaffold, which suggested no proper mean of usage of the higher level or happen to be another scaffold. Personnel will just climb the shape of the scaffold as the mean to access the top level or another scaffold. This will cause a potential circumstance of workers dropping faraway from it as there are no protections or anything to secure them.
Control measure - Ladder and stair are installed for scaffold erected above 2 meters. It is also built in a way that it does not run from the bottom to the very best in great elevation as staff member will mostly comes with fatal harm, instead it is level by level. It is also built within the scaffold. When stair and ladder are available, it give a safe and easy mean of going up and down, thus reduce the intention of staff climbing as a mean of touring between the scaffold. It ought to be installed on a firm foundation that is level ground Under Regulation (17), MOM helps it be a must to acquire ladder or stair installed for scaffold but it will never be use over a bay to gain extra height. In case the access bay is area of the working platform, a trap door is to be provided. Strict control buttons are to be implemented to guarantee the snare door remains finished while working from the system corresponding COP 2009 AU.
Hazard (4) - Scaffold platform had not been built with toe-guard and safeguard rail and the side are being exposed to open area. Worker working on the program have a increased potential for falling off the system. Tools, material and dirt that are put on the system are likely to dropped down the platform due to worker will just kick over it. Personnel working or walking around underneath of the scaffold area could easily get injured.
Control strategy - Toe officer are designed at the edges of the platform to prevent item on the program to fall down to the earth. It ought to be built from the bottom and no opening in order prevent even small subject to dropped through it. The height should not be too low as thing will still topple off it. The standard requirement is toe guard should not be significantly less than 90mm in height. Guardrails are installed to avoid worker from slipping faraway from the system when stretches out to work. Guard rail height should not be less than a meter from the system cause setting up too low wouldn't normally serve the purpose of minimizing worker from slipping and Minimum of 2 guardrails is usually to be installed on any program with starting above 2meter matching to legislation 18.
Hazard (5) - Some scaffold include tag to declare it serviceability to make use of but some did not have tag available attached to it. So you can not tell whether it is safe for using or not. Some tags only reveal with a tick or a mix. Even if we want to check when the scaffold will be mended or whether the serviceable tag is still valid, there is absolutely no information on the business or the approved scaffold company/supervisor to follow up with. Some area of the scaffold was found to be tampered.
Control Measure - Making certain every scaffold will need to have a tag proclaimed clearly attached at the selected entry point so every personnel using can easily see it clearly before using. There must be detail like the company name and the supervisor who completed the inspection to promote ownership in the site. Contact number should also be included to cater for any issue about the scaffold. In addition, it good to include the particular date the last inspection was done and the next inspection due date. In case that the supervisor forgot to come and examine, worker can bottom on the information at the label to determine if the scaffold can be use for working. Usually at site contain workers from different country, so if in a position to display in a dialect or signboard that are often grasped would be beneficial to them and therefore reduced unwanted assumption. There also needs to be at least one designated gain access to onto the scaffold. Lastly to add on, the guaranteeing of approve scaffold supervisor after each inspection immediately place a notice on the scaffold to accredited whether it safe to be use should be enforced. Regular inspection can also identify unauthorise tampering of the element of the scaffold.
Hazards (6) - Scaffold erectors were working with no protective equipment or safety funnel. A few of them used unsuitable PPE (inappropriate size of gloves, shoe, helmet etc. ). This can impact their griping durability their ankle safeguard. In this situation, they are more prone to enter accident or suffer more serious accidents when thing were to affect them.
Control measure - Safety shoe should be provided to prevent tools or materials falling on the employees leg and also it also can act as a protection for it ankle and anti slide surface against slippery area. Helmet should be worn to avoid object slipping from the above going to the head straight. Glove can guard against uses up and chemicals. When focusing on scaffold from 2 meter level and above, erectors should always equip themselves with basic safety harness with shock absorber. Along with the hook, the erector will able to secure these to the structure of the scaffold to avoid them from dropping down. In the event where the staff member collapse the platform, he would be placed by the harness which will prevent him from hitting the ground and the distress absorber will reduce the probability of them injuring their backbone due to the impact of the street to redemption. Accurate sizing and the appropriate type of PPE related with their work area must be issue to the staff.
Hazards (7) - Overlay and testing net was not secure tightly and the anchored point are tied to the scaffold. In case of strong wind flow and rain, it would not serve as a protection for the employees in the building. There are also chances that it'll be blown away. If it dislodged and journey out of the site, it may cause injury to the passer-by. The dragging aftereffect of unsecured netting may cause the scaffold to see more stress and insert to it. Scaffolds might collapse because of this. Some regions of the netting are torn with openings. Debris will be able to through the web and hit individuals below plus more dust will be revealed out to the surroundings.
Counter methods - The net or overlay will be linked the building composition, the very best of the building framework is recommended as a anchored point. As the composition of scaffold are not designed strong enough to hold this extra load. Building composition provides better power to counter to the breeze and rainfall and also able to withstand load on them. Secured netting also serves to enclose the scaffold when it properly attached. Damage screening process net should be repaired whenever reported by employees. Netting shall be installed as close to the scaffolds as possible for the maximum impact. It should only be installed and maintains by a professional persons. If the region always experience strong wind, more attached point will be imposed to enhance and secure it. It a must to match netting or overlay for just about any exterior scaffold under MOM regulation.
Hazards (8) - Scaffold contain various components that are not from the same manufacturer. Although it might look suitable to use, but usually the material power, sizes will change. Due to different supplier have their own design, having different maker components will usually lead installation complications. Forcing to install it will lead to increase wear of the aspect, loading capacity might be reduced. For e. g. blending of light weight aluminum and steel part, by using a couple which is constructed of steel will tend to crush the aluminum aspect as their strength is different. It'll cause the framework to be weakened.
Counter measured - Always try to buy the complete set of aspect from the same producer as their own design will most likely created for easy installation and able to provide the enough strength as promised. In the event of the necessity to use different producer component, A SPECIALIST Engineer should authorized that the sizes, fixing device are appropriate and most important it generally does not lessen the power, steadiness, rigidity or suitability of the scaffold under COP 2009. au
From here I end my report, the below website or record is where I needed reference from - www. mom. gov. sg, www. gov. pe. ca/law/regulations/pdf/O&01-01-2. pdf, app. wshc. gov. sg/cms/Portals/0/Complex Advisory for Scaffolds. pdf, COP 2009 - AU.