Line rupture

At Site E, personnel had not been trained in how to shut off the LPG tank in case of an LPG line rupture or leak, even though a potential rupture or leak was discussed as a hazard in the SSAHP. 

Line rupture HF release into area possible injuries/fatalities None 2 No ach[Pg.93]

Line rupture HF release in area possible injurie s/fatal it ie s. None 2 No Action Unlikely event piping protected against external impact. 

A supply line (internal diameter = 0.493 in) containing chlorine gas is piped from a regulated supply at 50 psig. If the supply line ruptures, estimate the distance the plume must travel to reduce the concentration to 7.3 mg/m3. Assume an overcast day with a 15 mph wind and a temperature of 80°F. The release is near ground level. 

Gulf of Mexico, East Breaks Block 610, Platform A, Blowout, Fire Diverter line ruptured. 

Diverter line ruptured, after 35 minutes of gas diversion. 

Steam Line Rupture at Tennessee Eastman Division, Peter N. Lodal Lessons Learned from the Longford Royal Commission Investigation into the Explosion and Fire on 25 September 1998 at the Esso Gas Processing Plant, Mark Boult Gary Kenney, Robin Pitblado... 

There are many examples of line rupture, sometimes accompanied by loss of life, attributed to the formation of hydrate plugs. Hydrate safety problems are caused by three characteristics ... 

The pressure relief system was not designed for two-phase flow. Thus, the resulting mass flow in the relief line was too high and could not resist such a high mechanical load. As a consequence, the relief line ruptured, causing the spillage. 

The refinery operators were in the process of switching feed from the D drum to the C drum when a 45-degree elbow in the feed line ruptured. Investigators later determined that the 6-inch-diameter elbow was made of carbon steel instead of the 5-percent chrome alloy steel required by specifications. It seems that this section of piping was fabricated and installed in 1963. The mistake in piping fabrication was discovered 20 years later. The extent of the fire damage was such that the central unit was down for a period approaching a year and the adjacent units were each down for a few weeks. [21]... 

An Eight-Inch Line Ruptures in Mexico City and over 500 People Die... 

The objective of performing a HAZOP or What-If review is to identify and develop credible process upset scenarios or causes which could adversely impact safety, health, environment, quality, productivity or public perception of the company. Obviously a multitude of events both common (line rupture) and very farfetched could be identified (meteor striking facility). The aim is to identify events that have a very real possibility of occurring at the facility. Although all such far fetched events may be listed, it is generally not practical or necessary to do so. 

A single instrument or mechanical failure. Pump failure, loss of flow, instrument malfunction, line rupture or leak, loss of cooling. 

In the startup of a process, Dowtherm, an organic liquid with a very low vapor pressure, was being heated from room temperature to 335 F. The operator suddenly noticed that the gauge pressure was not the expected 15 psig but instead was 125 psig. Fortunately, a relief valve in the exit line ruptured into a vent (expansion) tank so that a serious accident was avoided. 

Applicator exposure with high pressure low boom sprayers was found to be even less than that recorded for LPLB devices. Tractors with and without spray oabs were tested, and there was seen no overriding advantage to the spray cab under normal conditions. Under severe conditions, like gustlng winds or line ruptures, a cab would logically afford more protection. However, winds should generally cause reconsideration of the days operations. 

F-3 a Feedwater line rupture between steam drum and inlet isolation valve F-3b Feedwater line rupture in main incoming header... 

F-4a Saturated steam line rupture F-4b Main steam line rupture... 

Main steam line rupture inside containment at zero power ... 

High temperature and/or pressure in the reactor caused by blockage of reactor outlet line. Rupture of vessel causing a release of flammable gas to atmosphere resulting in explosion and equipment damage. PS-01 and TS-02 2 XV-01 Closes None... 

Case 1 Loss of level in vessel may result in downstream equipment being over pressurized resulting In line rupture Release of flammable gas to atmosphere resulting in fire, equipment damage and 2 possible fatalities LT-02 (lool) 1 XV-01 Closes P-01 Stops. XV-02 closes... 

Criterion 28 - Reactivity limits. The reactivity control systems shall be designed with appropriate limits on the potential amount and rate of reactivity increase to assure that the effects of postulated reactivity accidents can neither (1) result in damage to the reactor coolant pressure boundary greater than limited local 5uelding nor (2) sufficiently disturb the core, its support structures or other reactor pressure vessel internals to impair significantly the capability to cool the core. These postulated reactivity accidents shall include consideration of rod ejection (imless prevented by positive means), rod dropout, steam line rupture, changes in reactor coolant temperatme and pressure, and cold water addition. 

MAIN CONSOLE OPERATION Gauge similarity and Placement 1. Solvent Temp. Error 2. Solvent Liquid Level Error 3. Coolant R essure Error 1. Injury Solvent Loss 2. Injury Loss of Parts 3. Injury Line Rupture 1B Operator Error Probable Results Catastrophic Relocate and Redesign Controls... 

A. The Main Steam Line Isolation Valves are designed to isolate the steam generators and the main steam lines in the event of a main steam line rupture. 

This report documents the structural adequacy of Combustion Engineering s (C-E s) System 80+ ALWR steam generator internals to withstand a steam line rupture. 

Response to Steam Generator Tube and Steam Line Rupture... 

The incident began when an overhead hydraulic line ruptured and sprayed flammable hydraulic fluid on the floor in the frying area. Natural gas burners, used to heat the large chicken fryers, ignited the vapors of the fluid and caused a fire killing 25 workers and injuring an... 

SO shell and part of tlie steam line designed at the pi imar coolant pi essui e le el = suppi esses SG and steam line ruptures... 

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