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Netting is a collection of intertwined knotless webbing that forms grid system to make up the Safety net. There few types of netting systems available, Knotless and Knotted, come in either diamond shape or square shape. The Rated Safety Nets must be as per specification below and are used to protect Personnel and Falling objects without failing. Importantly are manufactured to ES/BS1263-1:2002: The other type of non rated nets are used for other application i.e Protection netting, racking nets, birding netting. The safety nets form part of the control measures and it is practical solutions to problems when working at height. Safety nets offer protection to and for workers (such as a fall arrest) and public safety (such as catching debris above walkways) when working at heights. Overall, Safety Netting is used primarily when working at heights to save lives!
For Safety Netting Conformity and specification Label: Each Net must be manufactured to and in accordance with ES/BS1263-1:2002.
There are four classes of safety net with Maximum mesh sizes and Energy absorption levels
Class A1 : Mesh Size 60mm Ea=2.3kJ; Class A2: Mesh size 100mm Ea=2.3kJ
Class B1: Mesh size 60mmEb=4.4kJj; Class B1: Mesh size 100mm Eb=4.4kJ;Other meshes sizes in 45mm and Nylon 70mm also fit the Class B1 and B2 and have higher energy levels above 4.4kJ
Diameter: 5mm | Density: 0.91 | Weight: 128grams/m2 (100mm mesh)
The Safety Netting fall arrest works by absorbing the energy created during the fall, the intertwined meshes are released slowly through the cords system in the nets and therefore, having the correct sag and fall height is very critical part of installation for the nets to able to adhere to conditions.
Standards: BS EN 1263-1, 1263-2 (2002), ASNZ4576, ISO9001:2008
Guideline: Safety Nets Installation and Training Manual
In Australia, it is in the WHS-2011 Act, Safe Work Australia , AS/NZS 4576-1995 (appendix 'f')it is Performance based approach when working at heights, and while still relying on the ISO9001:2008, British and European Standards
It is another form of fall arrest system that has many benefits and apart from delivering a low cost (reuse) and time saving system, it is also part of the solution when working at heights.
To ensure manufacturers and suppliers are in compliance with WH&S 2011 Act and duty of care, the onus is on suppliers and manufacturers to supply instructions and guidance of the product.
i.e. must provide training and Instructions/ Information as part of the order.
INSTALLERS- The Law says training must be provided and therefore personnel installing/ rigging safety nets onsite or structures must be Ticked i.e (Scaffolders/ Riggers/ Trades )Competent and have Received Training to Safety nets guidelines** regardless of their background.
The handover process provides a professional protection and accountability through correct hand over documentations and Net Inspection follows the Installations of Safety Nets has been completed to meet Legislative requirements and guidelines.
If Safety Nets are part of the application onsite then it is a 'must' to have Emergency Response procedure onsite, aiding the Site Emergency Plan**
As Safety Nets are installed in the open environment with exposure to the Sun and the Safety Net materials are created from Polypropylene and Nylon which is/are less resistance to UV light which can damage the mesh integrity.
Every Safety Net manufactured to BS1263-1, has three test mesh attached to corner and every year or no more than 12 month periods a test mesh will be taken off and send for testing in accordance with ISO 1806 and this test must be recorded as proof of evidence that nets can remain in services for next 12 months. If the Test mesh fail, this net must be removed from services as the mesh has started to be weakened. Best way to check is the discolouration of mesh/twines of net. At Safety Nets Australia we provide this services.
The working life of a Safety Net is based on the task of the application, location, the energy absorption and integrity can affect and reduce the age of Safety net. But in most cases the shelf life of Safety Net is 5 years.
Net(s) should be always stored in open dry conditions, and stored away from Sun light, chemicals and heat.
While there number of factors/ elements effects the clearance, will mention just a few.
It is important to ensure that there is sufficient space (clearance) below the safety net to allow to deflect under arrest without striking a hazard, but in the normal course of installation of suspended nets it 3.0m high. However, Span plays a major factor and so does the fall(how high).
Safety Nets Fall arrest system designed to withstand 6m fall, however in Australia, best practice not more than 2.0m and we recommend the nets be installed as closed as possible to working deck.
Planning is another important Factor :Fall arrest VS Prevention as Safety nets can do either pending on size of the net and intended application**
14a. Sound Supporting Structure and Anchor Points required when suspending Safety Netting onto in place. Fixing Device(s) must be 6kn (for the Corners) and 4kn for the adjacent fixing points. The safety netting fixing system are based on multi point fixing and shared connections rather than Single point connection.
Safety Nets are the most efficient and cost effective fall prevention barrier for many different applications:
An employer (PCBU)must ensure that risks associated with falling objects are controlled by use of the following measures:
(a) provision of safe means of raising and lowering plant, materials and debris in the place of work,
(b) provision of a secure physical barrier to prevent objects falling freely from buildings or structures in or in the vicinity of the place of work,
(c) if it is not possible to provide a secure physical barrier, provision of measures to arrest the fall of objects,
(d) provision of appropriate personal protective equipment.
Safety Nets Australia net systems fully comply with these provisions.
Safe Work Australia
WorkSafe Victoria : www.worksafe.vic.gov.au/wps/wcm/connect/wsinternet/WorkSafe/SiteTools/Help/error_404?
**for additional reading see our 'Safety Nets Installation Manual' which you can buy from us.
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The information is not intended to be comprehensive.
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SNA Hammock Type Style product(s) bought to meet requirements of the end user which is the Customer. While SNA will provide the correct product as ordered and fault free as required by the order and shall not be liable for any indirect damages due to this general condition, loss to equipment, or loss of service, loss of profit, damages or costs that could be incurred.
The Customer has sole responsibility for the selection and purchase of a Safety net product with continued Maintenance/ Visual Inspection whilst in use or in place.
Should it be impossible to use the Safety net products fully or in part, particularly due to equipment incompatibility, there shall be no compensation, reimbursement, except in the event of proven hidden defects, non-conformity, faulty product, or exercise of the right to cancel within 7 days.
These terms may be updated without notice
Remember - safety nets save lives. They prevent fatalities and serious accidents when working at heights, and also prevent the fall of a lot of debris onto the site below