BS 6657:2002 pdf download – Assessment of inadvertent initiation of bridge wire electro-explosive devices by radio-frequency radiation — Guide 5.3 Responsibility for making the hazard assessment The radio-frequency(RF) environment is becoming increasingly severe, with the proliferation oftransmitting sources and increased transmitter powers and the exploitation of new techniques. NOTE1 UK legislation [l] requires that employers safeguard both their employees and others who may be placed at risk by theiractivities. Hence, both operators of RF transmitters and users of EED have a responsibility to ensure safe operation. NOTE2 Particular locations such as mines and quarries may exist where additional responsibilities are placed on the owners andmanagers. Operators of a proposed site in which EED are to be used should request details from the transmitter operators about relevant transmitters in the locality of the site. The transmitter operators should includedetails of transmitters for broadcast, commercial, military, air traffic and emergency services such as police, fire and ambulance.The site operator should then use the assessment procedures given in thisBritish Standard, if necessary in consultation with the transmitter operators concerned. Similarly, an operator of a proposed new(or altered) transmitter should contact all operators of sites whereEED are used within the minimum distance of safe approach for the transmitter, and use the procedure given in this British Standard to assess the potential hazard at each location. Where both the site and the transmitter already exist but an assessment is required, the site operatorshould be held responsible for ensuring that the assessment is made. If for some reason relevant information cannot be made available to the body responsible for the assessment, the responsibility forhaving the assessment carried out should be assumed by the body unable to release the necessary information. NOTEB As an aid to those who need to make a hazard assessment but do not have the necessary technical resources, a list of sourcesof information and specialist orzanizations capable of providing consultation or test facilities is given in Annex C. 5.4 Recommended practices for radio silence in offshore operations ‘The position adopted by many offshore operators has been to switch off all transmissions from theinstallation during the surface preparation of the explosive tool until its immersion in the well at 70 mbelow sea bed level.At this point services would be restored until the explosive tool was returned to a similar depth on the upward journey when all services would again be cut of.Following its removal...

Download Address

  • Download