Insuring Adequate Spacing between Underground Distribution Conductors in Conduit and Gas Lines

Parker,; Ward,

doi:10.1109/mper.2002.4312376

Cited by 1 publication

(1 citation statement)

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“…A review of international and Italian regulations regarding spacing between buried electric cables and gas pipes is given in this section. This problem has recently been examined in other papers (Azcarraga and Garcia-Colon, 2004), (Parker and Ward, 2003).…”

Section: Regulations Regarding Buried Utilities Clearance Distancesmentioning

confidence: 98%

Large N.G. explosion and fire involving several buried utility networks

Piccinini

Tommasini

Pons

2009

Process Safety and Environmental Protection

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This paper describes an accident (explosion and natural gas fire) that occurred in Turin (Italy), in which power distribution cables, tramway network feeding cables and a gas pipe were involved. The described accident is particularly interesting because it occurred in the town centre and lasted several hours, producing a very high risk for the population. Fortunately, nobody was injured, but 120 people were evacuated for 24 hours. The sequence of events is described, the involved facilities are examined and the physical processes which led to the different top events are discussed. Actually, starting from a modest event (600 V electric cable loss of insulation), which most likely lasted for months, the aforementioned accident was reached in a crescendo of domino effects. This sequence has been represented by an ISD in which the failure of the different protection systems is highlighted. These protection systems were mostly based upon the strict respect of procedures both in the installation and in the following maintenance of the different utilities. These aspects have been also briefly devised in the light of Italian and foreign regulations concerning the problem of the coexistence of buried utilities.

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Section: Regulations Regarding Buried Utilities Clearance Distancesmentioning

confidence: 98%