Demolition permit

Deliberate demolitions permit economies in the use of expls because time permits judicious placing and thorough tamping of charges... 

Demolition permit - Authorization to tear down and remove an existing structure. 

The latter could be implemented by requiring delay times after application for a building demolition permit. Economic instruments for this phase would include increasing the cost of disposal of demolition waste and providing incentives, perhaps in the form of subsidies, for entities that set up deconstruction, recycling, and/or materials reuse businesses. Information instruments could include Eco-Labelling schemes that have as one of their criteria the ability to disassemble products into recyclable materials. 

Many of the more critical target structures in sabotage operations are made of steel. Plastic explosives are the best for steel cutting. They are easier to place and permit the use of a simple rule of thumb for determining the amount of explosive needed rather than working out a complicated mathematical formula. Also, if the proper techniques are used much less explosive is required to do the job than demolitions formulas call for. 

Recommendation 17. Throughout closure operations, the sequence and extent of building demolition should be planned to ensure continuous separation of contaminated waste from uncontaminated waste. Professional engineers should review the proposed sequence and extent of demolition actions. The effects of demolition on structural integrity in the event of a contingency condition (such as a typhoon) should be considered. A system of work permits and controls should be established for operation of heavy equipment... 

Typical Jetcord comes in a veriety of sizes for special applications. The powerful linearshaped chage permits demolition contractors to cut supporting steel structures with a few ounces of expl rather than depend on the blast effect of large quantities of expls. Jetcord has been used successfully to demolish buildings bridges Ref Industrial Research Magazine (April 1974), pp 67-70... 

Note 2 Attnnonal designated m the table p A290,as 2 is similar in composition to the "British Service Ammonal used for demolition purposes. It must be press-loaded because it does not contain sufficient TNT to permit cast loading (Ref 19, p 84)... 

Devices of this class that in size and application correspond to the above-described delay pencil, except that they permit much longer delaying action, have been used since World War 11 but enjoy a more anonymous existence. They are suitable for underwater demolition. Because their glass ampoules are not part of the device but are only inserted prior to emplacement and activation by crushing, one item plus a set of ampoules serves the whole delay range. 

The decommissioning and demolition activities covered by decommissioning permits 1 to 7 have been completed. Under the 8 Decommissioning Permit, the components of the primary system and the rotating reactor top shield are to be removed by late 2001. 

Who Prior to permitting employees to start demolition operations, a competent person must make an engineering survey of the structure to determine the condition of the framing, floors, and walls, and possibility of unplanned collapse of any portion of the structure. Any adjacent structure where employees may be exposed shall also be similarly checked. 

Research demonstrates that construction workers are regularly overexposed to noise. The extent of daily exposure to noise in the construction industry depends on the nature and duration of the work. For example, rock drilling—up to 115 dBA, chain saw—up to 125 dBA, abrasive blasting—105 to 112 dBA, heavy equipment operation— 95 to 110 dBA, demolition—up to 117 dBA, and needle guns—up to 112 dBA. Exposure to 115 dBA is permitted for a maximum of 15 minutes for an 8-hour workday. No exposure above 115 dBA is permitted. Traditional dosimetric measurements may substantially underestimate noise exposure levels for construction... 

If demolition or refurbishment is to be undertaken, then hazards associated with structural collapse, fire, working at height, lifting and carrying and electricity must be considered together with health hazards from lead, asbestos, vermin and insects. As mentioned in Chapter 10, a structural survey before work commenced should reduce the risk of unintentional structural collapse. The issue of hot work permits, provision of fire-fighting equipment and suitable storage facilities for flammable substances should control the fire risk. Health risks can be controlled, for example, by the use of licensed contractors for the removal of asbestos, specialist contractors to eradicate vermin and the provision of suitable personal protective equipment. 

Any demolition work must be conducted by a competent company ensuring that all persons involved with the work have received adequate training, are familiar with the method statement and operate to a permit to work system. 

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