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Monday, February 20, 2006

Why do they find the Canadian and American public more valuable? Sherwood has recalled propylene valves with date codes from through that are suspect of leaking. Why did it take an explosion for this recall to take place? It is every employees responsibility to ensure the safety devices are in good condition. Why are they, industry wide, not conducting a simple soap test?

When cylinder is over-charged, lead plugs eventualy discharge slightly to allow pressure to release. These leaks are found with a simple soapy water test. Was this routinely done? If a cylinder is over charged with pressure, or if excessive heat is near the cylinder, plugs will completely dislodge so that cylinder will not explode. Pressure will jettison upwards emitting 3 - 5 ft of flame.

In the event of fire, lead will melt and dislodge 3. If cylinders are negligently over charged, safety devices will have no time to react and thermal decomposition will violently rupture the cylinder. Protect cylinders from physical damage. Store in cool, dry, well-ventilated area away from heavily trafficked areas and emergency exits. Full and empty cylinders should be segregated.

I would recommend that the city review Department of Transportation records kept by Praxair.

These records are documentation of cylinder pressure vs. DOT requires that the facility keep these records for 30 days.

CSB Safety Video: Dangers of Flammable Gas Accumulation

Since these documents are easily falsified, I would also suggest that during the Fire Departments annual inspection that they sample some of the full cylinders to verify that Praxair is operating within standard practice. Every acetylene plant must put into reserve cylinders from every completed fill process for inspection. They must be held for 24 hours to verify pressure has not exceeded pressure limits. Acetylene plants have operating manuals that contain charts to determine acceptable pressure vs.

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The Rexarc Company is a company in Ohio that manufactures acetylene facilities. They may provide additional information on safely operating an acetylene plant. Also, once the rubber meets the pavement your local Highway Patrol office may curb any vehicle and conduct an inspection. It is a very large fine per cylinder if over-charged cylinders are on public roadways.

Tulsa Fire propylene was released from z St. Tulsa Damage a safe distance. | Propane | Liquefied Petroleum Gas

The fire Photo courtesy of Tulsa Fire Department department did not actively fight the main fire due to the danger of rocketing cylinders; z The Fire Department gained control of the fire at about pm, after the fire had consumed most of the flammable gases onsite.

Louis cylinder be equipped with a fire, the affected companies Comparing pressure relief device that meets the requirements of Compressed Gas investigated the performance of the propylene cylinders CG-7 relief Propylene and Association, Inc. The ous propylene release, similar to cylinders. Pamphlet S Louis, and that oc- specifies the set point of the relief curred since Although about valve.


Figure 8 shows the vapor 1, times more propane cylin- ders are in service than are propy- lene cylinders,8 CSB found gas re- packaging facility fires that began Figure 8. Propane and Propylene Vapor Pressures with a propane release do not oc- cur with significantly greater fre- quency. To understand why, CSB compared propylene and propane cylinder characteristics.

Propylene and propane have similar physical properties; both are liquefied petroleum gases and use the same cylinders and relief device standards. A physical CSB has estimated that the part Battelle report document variability in the opening pressure of relief Best Practices for z Avoid prolonged exposure to a damp environment graded valves in service, which found that a significant number open below Cylinder Storage surface prevents water accumulation ; and the minimum pressure required by National Fire Codes, CGAs Safe z Do not obstruct exit routes.

CGA pamphlet S One Handling of Compressed Gases in company study and the Battelle Containers, and company Three additional best practices are report document a decrease in set standards provide general relevant to the incidents discussed pressure for subsequent valve guidelines for storing cylinders in this safety bulletin that gas openings after the initial opening.

Fixed fire z Post hazard class or name of propylene fires can be attributed to protection such as fire monitors, gases on containers; the greater margin provided in deluge, or sprinkler systems can standard propane cylinders z Group by hazard class; immediately cool cylinders between the vapor pressure of z Protect from objects that will reducing the likelihood of propane and the minimum set damage the metal surfacenot additional cylinder releases, fire pressure of the relief valve.

Report, minimize, contain and clean up spills that do occur. Building Code Sections 8.


Zurich recommends storing these containers in dedicated liquid storage rooms, detached buildings, or in listed dispensing. William L. Department of Labor. Not an alarm anyone wants to hear, especially not when the fire is burning at a major fuel source. Tell the operator: What has.

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There are basically four different types or classes of fire extinguishers, each of which extinguishes specific types of fire. Newer fire extinguishers. Phone Number:. Size: px.

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