CUSTOMIZED Pressure Relief Products 7-8803-7 WORLDWIDE SERVICE
CUSTOMIZED Pressure Relief Products 7-8803-7 WORLDWIDE SERVICE Solutions...for tough Working With Specialized The Role of Pressure Relief Problems Technologies...Like Yours Rupture Discs Whether it's from the standard Solving pressure relief problems Rupture discs are non-reclosing product line -- or a custom-designed for you is the special role played by pressure relief devices which open within rupture disc for a one-of-a-kind application C.D.C.'s Product Development Group milliseconds when system pressure -- Continental Disc Corporation has built a and the Special Products Group. reaches its specific burst rating. 30-year reputation for solving the toughest This pool of product development They are designed to relieve either pressure relief problems. expertise has been retrofitting C.D.C. positive or negative conditions at a For OEM's. Defense Industries. designs into clients' systems for a specified set pressure and in some Space exploration program. Aircraft and quarter of a century. They are engineers applications, additionally withstand aerospace manufacturers. The chemical who are at home with special or exotic vacuum or backpressure. Rupture discs and petrochemical industries. Food materials, ultrahigh or ultralow burst may also be designed to provide dual processors. The electronics industry. pressures, as well as state-of-the-art pro- relief (positive or negative) within the And countless more. cessing and testing requirements. same rupture disc. Whether your needs are for A rupture disc opens (relieves) Problem Solving quantities of one, one thousand, or within milliseconds. This instantaneous more, Continental Disc is ready to solve and unrestricted relief capacity allows Continental Disc Corporation's your pressure relief problems.
Dual-Action Valve Full-opening downhole test valve APPLICATIONS The dual-action valve (DAV) is a full-opening ■ Reservoir testing downhole test valve. It is run in the closed ■ Downhole testing position, opened by annulus overpressure (rupture disc), and then reclosed by a second ■ Completion operations annulus overpressure (rupture disc). The ■ Deviated and deepwater wells operator mandrels are balanced to ID pres- ■ HPHT wells sure. A two-way ratchet is used to prevent the operator mandrel from shifting, except BENEFITS in response to annulus overpressure. ■ Minimizes operating time by using Ball valve rupture disc operations When the first disc is ruptured, hydrostatic pressure is applied to an operator area, which FEATURES opens the ball valve. The ball stays in the open Operator mandrel ■ Rupture-disc-operated tester valve position until the second disc is ruptured. Rup- ■ Fullbore when opened turing this disc applies hydrostatic pressure to Low-value rupture disc a greater operator area, which permanently recloses the ball valve. High-value rupture disc Replacing the DAV ball valve with the alterna- tive ball valve enables running the DAV open, Collet closed, and then permanently reopened. The DAV-K is part of the new-generation hostile K-string developed for ultrahigh-pressure wells with bottomhole pressures up to 30,000 psi. Seal options used in the tool make it suitable for both standard and ultrahigh-temperature environments, as well as hostile drilling and completion fluids. Dual-action valve. Specifications Model DAV-E DAV-FAA/FAB DAV-K Max. OD, in [mm] 5 [127] 5 [127] 5 [127] Tool ID, in [mm] 2.25 [57] 2.25 [57] 2.25 [57] Pressure ratings Max.
March 2009 www.che.com Feature Report Part 2 Getting the Most Out of Your Rupture Disc For optimum rupture-disc performance, pay attention to installation, operation and maintenance Dean Miller Fike Corp. upture disc devices provide over- Liquid service pressure protection for a variety Liquid-full systems cre- of storage and process vessels ate a number of process- FIGURE 1. This viscous-tee holder design con- Rand equipment. The objective of ing challenges, many of tinually wipes the disc surface, preventing prod- the rupture disc is to maintain a leak- which apply to rupture uct buildup tight seal and be a passive bystander discs. Pressure spikes and until called upon to relieve excess pres- water hammer generated sure. While this is generally the case, by rapid opening or closing there are times when rupture disc of valves somewhere in the process fre- using pressure accumulators to absorb performance can be adversely affected quently do affect the rupture disc. The the unavoidable pressure spikes. through various installation, operation typical rupture disc begins to respond Common indications that you have and maintenance practices. to pressure in excess of the burst pres- a water hammer or another pressure This article reviews some of these sure in less than 1 millisecond. This spike problem include the following: practices, real-life observed conse- means that a short-duration pressure • The rupture disc appears to burst at quences, and corrective or preventative spike that is not detectable by normal a pressure lower than the marked measures that can improve rupture disc process instrumentation can and will burst pressure performance.
Crosby Valve Inc. Technical Document No. TP-V300 Effective: May 1997 An FMC Corporation subsidiary Crosby® Pressure Relief Valve Engineering Handbook COV/CON.PM6 1 9/22/97, 7:56 AM Notes: COV/CON.PM6 2 9/22/97, 7:56 AM CROSBY® Pressure Relief Valve ENGINEERING HANDBOOK CONTENTS Chapter 1 Introduction to Crosby Engineering Handbook Chapter 2 Fundamentals of Pressure Relief Valve Design Chapter 3 Terminology Chapter 4 Codes and Standards - Summary Chapter 5 Valve Sizing and Selection - U.S.C.S.* Units Chapter 6 Valve Sizing and Selection - Metric Units Chapter 7 Engineering Support Information Appendix ASME Section VIII, Division 1, 1992 Edition Exerpts Other Information Ordering Information Pressure Relief Valve Specification Sheet Warning: The information contained in this handbook is for informational purposes only. See also Crosby's computer sizing program, CROSBY-SIZE. The actual selection of valves and valve products is dependent upon numerous factors and should be made only after consultation with applicable Crosby personnel. Crosby assumes no responsibility for the actual selection of such products and hereby expressly disclaims liability for any and all claims and damages which may result from the use or application of this information or from any consultation with Crosby personnel. *United States Customary System COV/CON.PM6 3 9/22/97, 7:57 AM Crosby® Engineering Handbook Technical Publication No. TP-V300 Chapter I Introduction The Crosby® Pressure Relief Valve Engineering Hand- Crosby pressure relief valves are manufactured in ac- book contains important technical information relating cordance with a controlled Quality Assurance Program to pressure relief valves. which meets or exceeds ASME Code Quality Control Program requirements.
OCCUPATIONAL SAFETY AND HEALTH STANDARDS (As Amended, 1989) Department of Labor and Employment Philippines Reprinted with permission from the BUREAU OF WORKING CONDITIONS DEPARTMENT OF LABOR AND EMPLOYMENT Intramuros, Manila Published and printed by the OCCUPATIONAL SAFETY AND HEALTH CENTER DEPARTMENT OF LABOR AND EMPLOYMENT North Avenue corner Agham Road, Diliman, Quezon City February 2005-May 2019 FOREWORD The Occupational Safety and Health Standards was formulated in 1978 in compliance with the constitutional mandate to safeguard the worker’s social and economic well-being as well as his physical safety and health. Adopted through the tested democratic machinery of tripartism, the 1978 Standards is considered as a landmark in Philippine labor and social legislation. The advent of industrialization and the continuing introduction of technological innovations in our country today have, however, correspondingly increased the number and types of occupational hazards that our workers are exposed to. Viewed against this backdrop, it became imperative that the Standards be revised to make it truly responsive to the workers’ needs. Joint efforts exerted by the Bureau of Working Conditions, the ILO Manila Office and the tripartite sectors bore fruit in August 1989 when the revisions were finally approved by the Secretary of Labor and Employment pursuant to his authority under Article 162 of the Labor Code of the Philippines. With the latest improvements in the Standards, all establishments covered will now be provided with a better tool for promoting and maintaining a safe and conducive working environment. I therefore urge all sectors concerned-whether they be in labor, management, government or the academe-to extend their full support to achieve the noble objectives of the Occupational Safety and Health Standards.
Preparation and Installation of the RCS Rupture Disc Assembly
GEP-6048 Rev. R 100183 Ref. I.D.: 6691 Preparation and Installation of the RCS Rupture Disc Assembly WARNING USER SHOULD READ AND THOROUGHLY UNDERSTAND THESE INSTRUCTIONS BEFORE INSTALLING RUPTURE DISC. THESE INSTRUCTIONS DO NOT PURPORT TO ADDRESS ALL OF THE SAFETY FACTORS ASSOCIATED WITH THE RUPTURE DISC’S USE IN SERVICE. IT IS THE RESPONSIBILITY OF THE USER TO ESTABLISH APPROPRIATE SAFETY, HEALTH, AND TRAINING MEASURES FOR THEIR PERSONNEL INSTALLING, SERVICING, OR WORKING IN AN AREA WHERE RUPTURE DISC ASSEMBLIES ARE IN USE. SERVICE AND/OR MAINTENANCE ON OR AROUND THE RUPTURE DISC DEVICE MUST NOT BE PERFORMED WHILE THE DEVICE IS SUBJECTED TO OPERATING PRESSURES AND/OR TEMPERATURES. IT IS THE USER’S SOLE RESPONSIBILITY FOR DESIGN AND PLACEMENT OF RUPTURE DISCS WITHIN THEIR FACILITY AND UPON THE EQUIPMENT UPON WHICH THE RUPTURE DISC OF USER’S SELECTION IS TO BE LOCATED. IT IS USER’S SOLE RESPONSIBILITY FOR THE DESIGN OF ADEQUATE VENTING AND INSTALLATION OF ADEQUATE VENT PIPING OR DIRECTIONAL FLOW AFTER RUPTURE OCCURS WITH THE RUPTURE DISC AS INTENDED. WHEN SIZE IS SPECIFIED, CONTINENTAL DISC CORPORATION ASSUMES THAT ADEQUATE PROVISIONS HAVE BEEN MADE BY PURCHASER FOR PROPER VENTING OF A SYSTEM TO RELIEVE THE SPECIFIC PRESSURE. LOCATE RUPTURE DISC WHERE PEOPLE OR PROPERTY WILL NOT BE EXPOSED TO THE SYSTEM DISCHARGE IN CASE OF RUPTURE. VENT TOXIC OR FLAMMABLE FUMES OR LIQUIDS TO A SAFE LOCATION TO PREVENT PERSONAL INJURY OR PROPERTY DAMAGE. IT IS THE USER’S SOLE RESPONSIBILITY TO SPECIFY THE BURST PRESSURE RATING OF A RUPTURE DISC AT A COINCIDENT TEMPERATURE AT WHICH THE RUPTURE DISC IS TO BE USED.
Supercritical Fluid Extractions, Reactions and High Pressure Chemistry www.supercriticalfluids.com SFT-110 SFE System Bench Top SFE for Universities and Industry • Sample Vessel Volumes from 5 ml to 100 ml • Operating Pressure up to 10,000 psi (68.9 MPa) • PID Control of Pressure and Temperature • Integrated Fluid Preheater and Flow Meter • Thermoelectrically Cooled Pump Technology • Various Extract Collection Options • Optional Co-solvent Addition Modules The SFT-110 Supercritical Fluid Extractor The SFT-110 Supercritical Fluid development work. With a 100 ml vessel, achieve and maintain a desired pressure Extractor (SFE) is an entry level system the SFT-110 can extract very low levels set point. A PID temperature controller which possesses many features typically of key components from materials and monitors and maintains the precise fluid found in more costly SFE equipment. It process larger amounts of bulk material temperature inside the high pressure may be used for a variety of applications than would be possible with smaller, vessel. from routine analytical work to basic analytical scale SFE equipment. Inside process development. the SFT-110’s oven, a preheater ensures The SFT-110 utilizes the latest that the temperature of the fluid reaching variable restrictor valve (back pressure The SFT-110 was developed for the extraction vessel is controlled precisely. regulator) technology, providing precise people who want to investigate the This is essential to obtaining accurate, control over the flow rate of the expanding feasibility of applying supercritical fluid repeatable results. gas. This is essential for obtaining highly techniques to a wide variety of analytical reproducible results. Flow rates can range and processing problems.
Did You Know? Hazards of Relief Devices in Series What Can You
Sponsored by http: //www.aiche.org/ccps/safetybeacon.htm CCPS Messages for Manufacturing Personnel Supporters Hazards of Relief Devices in Series November 2006 A vessel has a rupture disk and a pressure relief valve in series to protect against high pressure in the vessel. There is a pressure gage on the pipe between the rupture disk and the relief valve. As a part of your regular plant inspection, you are supposed to check the pressure gage. The gage normally reads Rupture zero. Today you observe a pressure of nearly 50 psig (~3.5 barg) as shown. Disk Do you understand why this is a significant hazard? How does pressure between the rupture disk and the pressure relief valve affect the performance of the vessel overpressure protection system? Pressure Relief Valve Did you know? What can you do? A rupture disk bursts when the pressure on the process Check to ensure that your training side of the disk exceeds the pressure on the downstream program covers this situation. side by the design pressure of the rupture disk. So, a 100 Do you know what to look for to psi (6.9 bar) rupture disk will burst when the pressure on recognize a rupture disk and relief valve the process side of the disk is 100 psi (6.9 bar) greater in series? than the pressure downstream of the disk. If you have installations like this, be The pressure might be caused by a small “pinhole” sure to check the pressure regularly. leak in the rupture disk which will allow material to If you observe pressure between a slowly leak through the disk and build up pressure, or it relief valve and a rupture disk, be sure to could be the result of a burst rupture disk.