Archives :: Environmental, Health & Safety :: Plant & Personnel Safety :: Overpressure & Runaways

Displaying 21 - 40 of 45 stories.
March 28, 2011
Oseco The Flo-Tel rupture disc detection system (photo) is a noninvasive sensor that operates with a reed-switch and magnet technology. The design avoids several challenges of standard rupture disc sensors. Some...
http://www.chemengonline.com/environmental_health_and_safety/plant_and_personnel_safety/overpressure_and_runaways/A-magnet-operates-on-this-rupture-disc-sensor_7242.html
March 28, 2011
Oseco The Flo-Tel rupture disc detection system (photo) is a noninvasive sensor that operates with a reed-switch and magnet technology. The design avoids several challenges of standard rupture disc sensors. Some...
http://www.chemengonline.com/environmental_health_and_safety/plant_and_personnel_safety/overpressure_and_runaways/Flo-Tel-rupture-disc-detection-system_7253.html
March 28, 2011
The TQ+ is a new pre-torqueable rupture disc holder in this company’s product line. The TQ+ type was designed to be installed in multiple international flange rating...
http://www.chemengonline.com/environmental_health_and_safety/plant_and_personnel_safety/overpressure_and_runaways/Versatility-is-the-major-feature-of-these-rupture-disc-holders_7396.html
March 28, 2011
BS&B Pressure Safety Management The BPRV Buckling Pin Relief Valve (photo) may be certified according to the 2009 addendum of ASME Section III, Div. 1, bearing both the UD stamp and NB mark. Since 2004, the BPRV valves have...
http://www.chemengonline.com/environmental_health_and_safety/plant_and_personnel_safety/overpressure_and_runaways/More-certification-for-this-buckling-pin-relief-valve_7481.html
March 28, 2011
The TQ+ is the latest addition to this firm’s line of pretorqueable rupture disc holders. The holder allows rupture discs to be installed and then torqued to...
http://www.chemengonline.com/environmental_health_and_safety/plant_and_personnel_safety/overpressure_and_runaways/This-holder-allows-rupture-discs-to-be-torqued-after-installation_7491.html
March 28, 2011
This firm has added new high performance models to its range of rupture discs. For protection of medium- and high-pressure equipment, the rupture discs model SCD (forward acting) and SCR (compression) have a micro-scored calibrated section with six sectors...
http://www.chemengonline.com/environmental_health_and_safety/plant_and_personnel_safety/overpressure_and_runaways/Rupture-discs-for-protecting-plants-from-overpressure_7706.html
February 1, 2011
The pressure testing of process piping and vessels is essential in the chemical process industries (CPI). In liquefied natural gas (LNG) and other cryogenic facilities, residual water left by hydraulic pressure testing could result in operational problems if not completely removed, and complete removal of residual water can be very difficult and time consuming. Pneumatic pressure testing avoids these...
http://www.chemengonline.com/environmental_health_and_safety/plant_and_personnel_safety/overpressure_and_runaways/Evaluating-and-Reducing-the-Risks-Of-Pneumatic-Pressure-Testing_6363.html
August 1, 2010
In any given chemical processing facility, there may be literally hundreds of operational environments that require protection from excessive pressure. Both rupture disks and pressure relief valves, or the two used in combination, help protect against damage to equipment and injury to personnel. While the basic technology for either type of mechanism has not changed much in recent years, tweaking the...
http://www.chemengonline.com/environmental_health_and_safety/plant_and_personnel_safety/overpressure_and_runaways/Pressure-relief-Oh-What-a-Relief-It-Is!_5886.html
July 1, 2010
Relief systems are the last line of defense for chemical process facilities. Verifying their capability to safeguard equipment integrity becomes important as process plants age, increase their capacities to adjust to new market requirements, undergo revamps or face new environmental regulations. In the past, approximately 30% of the chemical process industries’ (CPI) losses could be attributed, at...
http://www.chemengonline.com/environmental_health_and_safety/plant_and_personnel_safety/overpressure_and_runaways/Aging-Relief-Systems-Are-they-Working-Properly_5808.html
December 5, 2009
Oseco The Flo-Tel rupture disc detection system (photo) is a noninvasive sensor that operates with a reed-switch and magnet technology. The design avoids several challenges of standard rupture disc sensors. Some...
http://www.chemengonline.com/environmental_health_and_safety/plant_and_personnel_safety/overpressure_and_runaways/A-magnet-operates-on-this-rupture-disc-sensor_5334.html
October 1, 2009
Last month, the chemical engineering profession began to feel its first aftershocks from an explosion that occurred nearly two years ago at a plant that most of you would be hard-pressed to recall. The delivery came in an accident report issued by the U.S. Chemical Safety Board (CSB; www.csb.gov). The report determined that the massive December 2007 explosion and fire at T2 Laboratories in Jacksonville...
http://www.chemengonline.com/environmental_health_and_safety/plant_and_personnel_safety/overpressure_and_runaways/Dont-wait-to-react_5137.html
September 15, 2009
The massive December 2007 explosion and fire at T2 Laboratories in Jacksonville, Fla. was caused by a runaway chemical reaction that likely resulted from an inadequate reactor cooling system, investigators from the U.S. Chemical Safety Board (CSB; www.csb.gov) said in a final draft report released today. Concluding that T2 did not recognize all of the potential hazards of the process for making a gasoline...
http://www.chemengonline.com/environmental_health_and_safety/plant_and_personnel_safety/overpressure_and_runaways/Chemical-Safety-Board-finds-explosion-was-caused-by-cooling-system-failure-in-a-runaway-reaction_5070.html
March 1, 2009
Protecting process systems from overpressurization is vital throughout the chemical process industries (CPI). Both safety relief valves and rupture disks are commonly used for this purpose. Sometimes the combination of a relief valve with a rupture disk can add service life to the relief valve and prevent process leakage, which is important from safety, conservation and financial standpoints. This article...
http://www.chemengonline.com/environmental_health_and_safety/plant_and_personnel_safety/overpressure_and_runaways/Combining-Rupture-Disks-with-Safety-Relief-Valves_4582.html
March 1, 2009
Rupture disc devices provide overpressure protection for a variety of storage and process vessels and equipment. The objective of the rupture disc is to maintain a leak-tight seal and be a passive bystander until called upon to relieve excess pressure. While this is generally the case, there are times when rupture disc performance can be adversely affected through various installation, operation and...
http://www.chemengonline.com/environmental_health_and_safety/plant_and_personnel_safety/overpressure_and_runaways/Getting-the-Most-Out-of-Your-Rupture-Disc_4583.html
January 13, 2009
I would like to draw your attention to a few points on the November 2008 article, Pressure Relief System Design (pp. 40–45): 1. Pressure drop and pressure loss: The inlet pressure “drop” that the author refers to under Relief system piping is non-recoverable pressure loss, and does not include a “drop” in pressure due to elevation increase. It should be labeled as a pressure...
http://www.chemengonline.com/environmental_health_and_safety/plant_and_personnel_safety/overpressure_and_runaways/Comments-on-Pressure-Relief-System-Design_4473.html
November 1, 2008
  Pressure relief systems are vital in the chemical process industries (CPI) for handling a wide variety of situations. They are used to prevent pressurization above a system’s design pressure; for venting during an unusual or emergency situation; and for normal depressurization during a shutdown, as examples. In some cases, such as when non-combustible gases including steam, air and nitrogen...
http://www.chemengonline.com/environmental_health_and_safety/plant_and_personnel_safety/overpressure_and_runaways/Pressure-Relief-System-Design_4319.html
October 15, 2008
This article presents the fundamental concepts of the discharge coefficient, KD, of a relief valve or a safety relief valve, and flow resistance factor, KR, of a rupture disk, and their proper use in sizing an emergency relief system. When these devices are used to protect a pressure vessel, they must be certified according to ASME code in the U.S. Both the discharge coefficient and the flow resistance...
http://www.chemengonline.com/environmental_health_and_safety/plant_and_personnel_safety/overpressure_and_runaways/Engineering-Practice-Discharge-Coefficients-and-Flow-Resistance-Factors_4242.html
July 2, 2008
A revamped website from Continental Disc Corp. (Liberty, MO) features easy-to-use navigation and simple rupture-disc pressure-protection information in a new look that is clean...
http://www.chemengonline.com/environmental_health_and_safety/plant_and_personnel_safety/overpressure_and_runaways/Website-helps-identify-local-pressure-measurement-expertise_4044.html
April 15, 2008
A good understanding of the reaction chemistry is needed for a safe process design It is a fact that safety-related incidents do occur in the chemical process industries (CPI). These incidents have, in part, led to increased attention to reactive-chemical issues by industry, government and other stakeholders. We know that good safety-management systems take the reactivity of chemicals as well as the...
http://www.chemengonline.com/environmental_health_and_safety/plant_and_personnel_safety/overpressure_and_runaways/Environmental-Manager-A-Checklist-for-Safer-Chemical-Batch-Reactions_3800.html
February 15, 2008
The failure of a device or of a group of components can lead to overpressurization and subsequent adverse events, such as fire, explosion, spill or release. The most common causes of overpressurization are listed below. Understanding the circumstances surrounding overpressurization will help an engineer to avoid these failures. External Fire According to API RP 520 and 521 standards, a fire-exposed area is...
http://www.chemengonline.com/environmental_health_and_safety/plant_and_personnel_safety/overpressure_and_runaways/Causes-of-Overpressurization_3671.html
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