(b) Each segment of a service line (other than plastic) intended to be operated at a pressure of at least 1 p.s.i. %%EOF The R factor is required if the allowable stress at the test temperature is greater than the allowable stress at the design temperature. (5) Pressure recording charts, or other record of pressure readings. 192-124, 83 FR 58719, Nov. 20, 2018]. Check that any attachments unable to withstand the test pressure must be removed. If the test temperature is lower than the operating temperature, the design pressure should be multiplied by the ratio of the design stress at the test temperature, over the design stress at the operating temperature (except for low pressure pneumatic test). Hydrostatic Pressure Formula. Action . 20. Test requirements for pipelines to operate at a hoop stress less than 30 percent of SMYS and at or above 100 p.s.i. Pressuring equipment should not be left unattended at any time during the test. Add water to the tank and allow time for the water to settle. For hydrotest and component pneumatic tests the test factor = 1.25. Safe distance = (0.15)x(D)x(a)^0.4x(p)^0.6. A separate drafting site (e) If a component other than pipe is the only item being replaced or added to a pipeline, a strength test after installation is not required, if the manufacturer of the component certifies that: (1) The component was tested to at least the pressure required for the pipeline to which it is being added; (2) The component was manufactured under a quality control system that ensures that each item manufactured is at least equal in strength to a prototype and that the prototype was tested to at least the pressure required for the pipeline to which it is being added; or. Blanking devices (spades blinds etc.) Shell courses are 6ft . Calculate minimum safe distances between the piping system being pneumatically tested and personnel/plant facilities using ASME . Use the Result Table option to display a table of the diameter and diameter tolerance versus either wall thickness type, diameter tolerance type, or diameter type. To familiarize workforce with ongoing Hydro Testing, Pneumatic Strength Testing, Line Blowing & Filling activities (Pressure Testing): In the event of a failure during the pressure test, the system will be immediately depressurized by cracking the vent on the test pump manifold. We have received your request and will respond promptly. Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a parts function at the center of their design considerations. Displaying title 49, up to date as of 3/02/2023. Overview of TLV and BEI and how they can make a big difference to workplace safety. For fluids (3.3) it is : l = 0.15 x internal diameter x ( (alpha) ^ 0.4) x ( (test pressure / (cube root of density))^ 0.6. 2.3 Hydrostatic test water discharge will be continually monitored. This app is build to calculate Hydro-test pressure required for Pressure vessel and piping system. b) Lloyd's register (96-02) T-0240 - Hydrostatic and Pneumatic safe distance. 192.509 Test requirements for pipelines to operate below 100 p.s.i. An alternative leak test is only permitted by ASME B31.3 when: Exposure of the piping to water via a hydrostatic test would damage the linings or internal insulation, or contaminate a process that would be hazardous, corrosive, or inoperative in the presence of moisture; and Already a member? (7) Leaks and failures noted and their disposition. (b) The test procedure must insure discovery of all potentially hazardous leaks in the segment being tested. Reply. If you have comments or suggestions on how to improve the www.ecfr.gov website or have questions about using www.ecfr.gov, please choose the 'Website Feedback' button below. Refer to a standard for safe distance calculations An interesting fact is that the value of hydrostatic pressure does not depend on the size and shape of the tank but only on the depth. Read on if you want to find out how you can estimate fluid pressure using the hydrostatic pressure equation. The eCFR is displayed with paragraphs split and indented to follow Safe distance = (0.15)x (D)x (a)^0.4x (p)^0.6. Ans: The depth of water column = 1m. Safe Distance for Pressure Testing Calculation of minimum safety distance for pressure testing (LLOYDS Register 96-02) form T-0240 sections 3.3 (fluid) and 4.3 (gas). Login. Werner Slken 2008 - Mechanical isolation used for gas, liquid, or vapor: Pneumatic testing and very high-pressure hydro-testing conducted when the main test area is free of personnel. Help Using The Pipeng Toolbox (opens in the popup workbook). [35 FR 13257, Aug. 19, 1970, as amended by Amdt. 192-125, 84 FR 52245, Oct. 1, 2019]. However, if the buildings are evacuated while the hoop stress exceeds 50 percent of SMYS, air or inert gas may be used as the test medium. If feasible, the service line connection to the main must be included in the test; if not feasible, it must be given a leakage test at the operating pressure when placed in service. Thats the best way to learn the methods and verify if your method is correct. The cause of failure shall be determined and rectified before any further pressure testing is undertaken. Materials of construction should have the required ductility (flexibility). p = g h The Spec number given is a Dutch Stoomwezen Code. B31.3 Clause 345.2.2 (a) - 10 minutes minimum. Select the pipe schedule (NPS or ISO), pipe diameter and wall thickness, or use the user defined option. If an inspection is required within the hold period, then pressure should be reduced to 80% of the test figure. The maximum hoop stress allowed is 100% of yield for hydrotest, and 90% of yield for pneumatic tests (the test pressure should be reduced if the hoop stress is exceeded). For hydrotest the test factor = 1.5. Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a parts function at the center of their design considerations. In addition. For ASME III piping and tubing systems the hydrostatic test pressure is often 1.25 P design to which are typically added a 6% code margin and a 75 psi test margin. Daily I see practices that can and should be better. Very high-pressure hydro-testing use the testing manifold and testing apparatus No alterations or modification permitted without Piping Production Engineers approval. Formal records of pressure and leak testing are maintained and kept. endstream endobj 897 0 obj <>stream (6) Elevation variations, whenever significant for the particular test. (689 kPa) gage and the pressure required to produce a hoop stress of 20 percent of SMYS; or. %PDF-1.6 % The technical storage or access that is used exclusively for statistical purposes. Strength test requirements for steel pipeline to operate at a hoop stress of 30 percent or more of SMYS. n$N!MwXMzf.U X"x Stored Energy in terms of kilograms of TNT is calculated using. 4. Very high-pressure hydro-testing use the testing manifold and testing apparatus No alterations or modification permitted without Piping Production Engineers approval. The record must contain at least the following information: (1) The operator's name, the name of the operator's employee responsible for making the test, and the name of any test company used. But your every article is very information and in simple language. SD = Safe distance in meters Test pressure 120 (psi) Diameter = 42.000 (inches) Wall thickness = 0.500 (inches) Exposed length = 400 (feet) . guide. Please let us know here why this post is inappropriate. 11, 2015]. May I ask about Hydro testing safe distance formula, is it common standard ? endstream endobj startxref The volume of equipment under test should be kept as small is greater than the test pressure. [35 FR 13257, Aug. 19, 1970, as amended by Amdt. Except for service lines and plastic pipelines, each segment of a pipeline that is to be operated at a hoop stress less than 30 percent of SMYS and at or above 100 p.s.i. RAJESH GOLDER says: February 2, 2022 at 4:20 pm . Calculateminimum safe distances between the piping system being pneumatically tested and personnel/plant facilities using ASME PCC-2 Mandatory Appendix 501-II and III equations. Metal 3D printing has rapidly emerged as a key technology in modern design and manufacturing, so its critical educational institutions include it in their curricula to avoid leaving students at a disadvantage as they enter the workforce. Know how to handle a hammer -Safety Moment #4, Ticks Threats when working outdoors -Safety Moment #16, https://www.youtube.com/watch?v=kVdFZ9ToI9U&list=PLv2vIPIAyhPCciKJpWSbvKoKqkHhig1Q9, Tool Box Talk: Dont Let Chemicals Get to You, Tool Box Talk: Winter Driving Safety Tips, Tool Box Talk: Working Around Heavy Equipment, Photo of the day: Hearing Protection Device Selection, Free ISO 14001:2015 Environmental Management System Audit Checklist Download. The test a Pressure was more than 330 bars. Barricade the testing area to control unauthorized entry. Pump selection is based upon the hydro-test pressure. 30 U.S.C. Please do not provide confidential By joining you are opting in to receive e-mail. The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes. p0 is the external pressure and is usually atmospheric pressure. After the pressure has been released, the vent valves shall be opened. [PLUS] tools are free in basic CHECK mode with Login or Open a free account (CHECK values no plots, tables, goal seek etc). Caution tags to identify equipment and lines under test. This spike hydrostatic pressure test must be held for at least 15 minutes after the spike test pressure stabilizes. 70co6kC} jz RHdg|'1r?$>?s~,y3sm`Eb0+A4v@}\-Sh$oGq*EM#]R Safety valves to be fitted when the pressurizing medium pressure Single, continuous pressure envelope is the preferable method. L Minimum Safety Distance, Meter Thanks. (621 kPa) gage, except that each segment of a steel service line stressed to 20 percent or more of SMYS must be tested in accordance with 192.507 of this subpart. shall confirm the required equipment specification. When the test pressure has been reached, the pressuring equipment shall be isolated from the equipment under test and where perform-able disconnected. citations and headings F : Hydrostatic force, and. SWMS) at the workplace. Use the workbook ASME B31.3 data tables to look up allowable stress data. Safety Precautions of Hydro Test: 1. The NCNR high pressure activity responsible reviews the experiment within this pressure range and may determine to approve the experiment. HDwr'mK7 SE8+x8am}k]Y`K"CzmBL`YBwNFVk;2#(,e} y/[L&S akbuJ9Kf:DQ.w]06~cv'{Y$ D\gd8 or existing codification. endstream endobj 811 0 obj <. Copyright 1998-2023 engineering.com, Inc. All rights reserved.Unauthorized reproduction or linking forbidden without expressed written permission. Ensure the equipment tested by the competent person, prior to testing. The deeper the region below a fluid, the higher the hydrostatic pressure. A positive means of . Calculate ASME B31.3 water volume and liquid chemical dose rate for water hydrotest. Vent valves will open after pressure release. Transmission lines: Spike hydrostatic pressure test. The R factor is the ratio of allowable stress at the test temperature over the allowable stress at the design temperature. 1 Joule= 10.197KgFCm 1KJ=1000J Stored Energy. Hydrostatic Pressure Formula. 1 CFR 1.1 How To Relate to Differences.. 4.44 lbf -ft is a small number that can be readily grasped; p Test pressure (bar). The hoop stress should be less than or equal to 90% of yield. The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user. If you had to define a safe distance for this pressure test, were you able to provide this? 2. (4) After the test pressure stabilizes at the baseline pressure and within the first 2 hours of the 8-hour test interval, the hydrostatic pressure must be raised (spiked) to a minimum of the lesser of 1.5 times MAOP or 100% SMYS. Whenever the hoop stress of the segment of the pipeline being tested will exceed 50 percent of SMYS, the operator shall take all practicable steps to keep persons not working on the testing operation outside of the testing area until the pressure is reduced to or below the proposed maximum allowable operating pressure. Test Pressure. 26 October 2021 SLAC-I-730-0A21C-033-R004 3 of 8 . This hydrostatic pressure calculator determines the pressure that arises at a certain depth of a liquid. (69 kPa) gage and each main to be operated at or above 1 p.s.i. No people were in the area during the burst, But some hydro test technicians and engineers had just left the area after having checked the Instrumental data. y#TJ>lwV) b NH *Eng-Tips's functionality depends on members receiving e-mail. Calculate ASME B31.3 process piping hydrotest and pneumatic leak test pressure and hoop stress check. For the Hydro test safe distanceSafe distance = (0.15)x(D)x(a)^0.4x(p)^0.6, where D Internal diameter (m)a Length/diameter of the piece (m)p Test pressure (bar), Safe Distance and Stored Energy Calculator for Piping Pneumatic Test. 192-58, 53 FR 1635, Jan. 21, 1988; Amdt. Barriers & Signs in place (agreed distance). Calculate ASME B31.3 gas volume and liquid chemical dose rate for gas leak test. Check out 42 similar fluid mechanics calculators , Use the hydrostatic pressure equation and multiply water density by pool dept and by the constant of gravity. The test pressure ratio = 1.5 for hydrotest, and 1.1 for pneumatic leak test. endstream endobj 896 0 obj <>stream During the hydrostatic test, you must maintain this pressure for at least ten minutes. (2) Each potentially hazardous leak has been located and eliminated. As per section 501-III-1 (b): Safe Distance (R) = Rs(2TNT)1/3 as per equation III-1 from ASME PCC-2 Appendix 501-III. It reaches the highest known depth of 10.994 m. Let's use our hydrostatic pressure calculator to estimate the pressure at the bottom of the Marian Trench (remember to choose salty water with = 1022 kg/m). (6.9 kPa) gage must be tested to at least 90 p.s.i. learn more about the process here. Calculate test pressure and hoop stress for low pressure plastic pipe (ASME B31.3 section A345). You deserve for appreciation and reward. Close this window and log in. For details on the basis of this calculation and example manual calculation refer to the article onPneumatic Testing Safe Distances. 5.2. If the fluid is at rest, we call it hydrostatic pressure. 914 0 obj <>stream The test pressure should be less than or equal to 1.33 x the design pressure, and less than or equal to 1.35 x the rated pressure for components. If E <= 135,500,000 J, the safe distance to be maintained is greater of 30m or R calculated as per equation . For plastic pipe use the Barlow's equation mid wall option, with the pipe nominal diameter. By joining you are opting in to receive e-mail. Not consenting or withdrawing consent, may adversely affect certain features and functions. Navigate by entering citations or phrases Rating of fittings, pressure gauges, vent valves, gaskets shall be suitable for the test pressure. In addition to instruments being kept at a safe distance . This subpart prescribes minimum leak-test and strength-test requirements for pipelines. ;uYi8C[ k]1UR5w!4; Post hydro test is also important. Using this test helps maintain safety standards and durability of a vessel over time. (d) For fabricated units and short sections of pipe, for which a post installation test is impractical, a preinstallation pressure test must be conducted in accordance with the requirements of this section. Wear face shields during pneumatic testing. Both had to do with unreliable pipe material. Safe distance = (0.15)x(D)x(a)^0.4x(p)^0.6. Safety valves to be fitted when the pressurizing medium pressure Single, continuous pressure envelope is the preferable method. information or personal data. The test pressure should be 1.5 times the design pressure for hydrotest, or 1.1 times the design pressure for pneumatic test. 192-77, 61 FR 27793, June 3, 1996; 61 FR 45905, Aug. 30, 1996; Amdt. For pneumatic test the test factor = 1.1. Inspectors crawl all over the unit to look for drips. shall confirm the required equipment specification. Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Design pressure. Can you calculate for me for 6inch pipe, 40 meter length and 170 bar pressure testing. This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Really I appreciate you. in this article, we will summarize the safe procedure of Pressure testing including hydro and pneumatic test safe Distance Calculation. Already a member? I was in OSH field for last 26 year as enforcement inspector of Government. a Length/diameter of piece (m) As per rules for Pressure testing Lloyds register (96-02) Calculation of minimum safety distance for pressure testing (LLOYDS Register 96-02) form T-0240 sections 3.3 (fluid) L = 0.15 x D x 0.4 x (P / )0.6. Access to the test area must be limited to essential personnel only barriers, warning signs, PA announcements, patrolling the test boundaries. Print Page. Note : The choice of high pressure versus low pressure service is at the discretion of the owner (section FK300). hb```B ead`PrGZ:@RCOSY@e,Ou>c(]vFqyfEgN6VusI=760p400wtt000Gtt 9 %B@L63XF%f& ,2L'5+/ftc7#a<1_230@9H Hs00C-? The pressure test is often regarded as a side-issue, and thus there is less attention to it. Calculation of SAFETY DISTANCE for pressure testing, Engineering Codes, Standards & Certifications, Low-Volume Rapid Injection Molding With 3D Printed Molds, Industry Perspective: Education and Metal 3D Printing. It is not an official legal edition of the CFR. Thanks a lot, where D Internal diameter (m) . This pressure is usually greater than the pipeline's design working pressure. Choosing an item from Pressure Testing and Safe Distance calculation. 1.20 atm or 120.94 kPa as per the Omnicalculator tool hydrostatic pressure calculator. Try plus mode using the Plus Mode Demo tools with no login. Ensure the equipment tested by the competent person, prior to testing. See our buoyancy calculator for more information. Calculate test pressure and hoop stress for high pressure steel pipe (ASME B31.3 section K345). The hydrostatic test pressures specified herein shall be maintained for a period of two hours. The hydrostatic test parameters must be clearly defined during the design phase and stated in the project specifications. Thanks Mr. Saurabh for giving us good informations. Instrument and control piping may be pressure tested using air, natural gas or inert . RLS HUMAN CARE PLANTING A TREE ON EVERY 17,000 PAGE VISITS. Example - Pressure acting in water at depth 1 m . (276 kPa) gage must be given a leak test at a pressure of not less than 50 p.s.i. As a Astonishingly, the pressure here is more than 1000 times bigger than the atmospheric pressure! Learn how your comment data is processed. | Hydrostatic Test Pressure Calculation. Promoting, selling, recruiting, coursework and thesis posting is forbidden. The NCNR high pressure activity responsible requests that any pressure equipment or sub-system thereof be submitted to 192.506 Transmission lines: Spike hydrostatic pressure test. distance limit for personnel during the pneumatic test. Hydro testing safe distance formula: For the Hydro test safe distance. Hydrotest Allowance Calculator. Diameter (in) Pipeline Segment Length (ft) Test Pressure (PSI) Testing Allowance (gal/hr) Computed per latest edition ANSI/AWWA C600 Rev 2010. Learn more about the eCFR, its status, and the editorial process. conducted as per 32-SAMSS-004 and the original construction code. The elevation gradient, along with the location and volume of the water source, and the pipe design data should be used to determine the length and number of test segments. Personally, I believe that most accidents can be prevented during pressure testing, if a number of essential conditions, prior to the pressure test, are satisfied. [Amdt. {,L The volume of equipment under test should be kept as small is greater than the test pressure. Thank you for helping keep Eng-Tips Forums free from inappropriate posts.The Eng-Tips staff will check this out and take appropriate action. I recommend you make your own. Hoop stress can be calculated for either the minimum wall thickness (nominal wall thickness minus fabrication allowance), or the pressure design wall thickness (minimum wall thickness minus the corrosion allowance). Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you. where D - Internal diameter (m) Explain mathematic questions The R factor is the ratio of allowable stress at the test temperature over the allowable stress at the design temperature. Please tell me what means of a and this p These devices should be clearly visible to the person controlling the pressure. Hydrostatic Pressure = 1.3 x MAWP or Design Pressure x ( stress value at Test Temperature / stress value at design temprature ). The pipe inside or outside diameter should be the maximum allowed by the code. How we can barricade it and is it allow to a person stay nearby the area to continue check gadge during Hydro testing? All rights reserved. Consideration to be given for the change of ambient temperature, e.g. I do not know the exact circumstances but something went completely wrong. This hydrostatic pressure calculator determines the hydrostatic pressure acting on an object floating at a certain depth in a liquid. Enhanced content is provided to the user to provide additional context. Recording . A tank will be subjected to hydrostatic testing after repairs. The calculator can solve this equation. t0 2&Q-N:kI&xZvYZC//uRG14N0qY6DRv/)8Xgv'aZ+A^:V ; >RdyyeWQHu:m&n\'TMrRYl$-WZ"ID8I{\,}Ka6!D j5wx!*Q,NEc. Each particle of a liquid is subjected to a gravitational force directed toward the Earth. Thank you for sharing this valuable information with us. please clarify. (c) Each segment of a service line (other than plastic) intended to be operated at pressures of more than 40 p.s.i. Materials of construction should have the required ductility (flexibility). Calculate ASME B31.3 process piping hydrotest and pneumatic leak test pressure and hoop stress check. For RTR laminated and filament wound pipe, the test pressure should be three times the manufacturers allowable pressure rating. 192-85, 63 FR 37504, July 13, 1998; Amdt. Pneumatic test Hydropneumatic test Alternative leak test. contact the publishing agency. The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network. Subscribe to: Changes in Title 49 :: Subtitle B :: Chapter I :: Subchapter D :: Part 192 :: Subpart J. p Test pressure (bar), Dear Ranjan, CLICK HERE FOR SAFETY OFFICER INTERVIEW QUESTIONS ANSWERS. Our hydrostatic pressure calculator uses the below hydrostatic pressure formula: The above formula for hydrostatic pressure determines buoyancy force, which was discovered for the first time by an ancient inventor Archimedes. Buy a Subscription to use the tools in plus mode (with plots, tables, goal seek etc). The pneumatic test pressure shall not be less than 1.2 nor more than 1.5 times the design pressure of the piping system. The average fluid density includes the dose chemical. 26, 1996; Amdt. [29 CFR 1910.157(f)(15)(ii)(A)] However, the maximum test pressure may not be more than 2.5 times the pressure determined under 192.121 at a temperature not less than the pipe temperature during the test. the hierarchy of the document. Promoting, selling, recruiting, coursework and thesis posting is forbidden. Have Many Safety Resources at our Partener Safety Bag, An advanced website of health, safety , security and environment providing many free services and guidelines by qualified Safety Professionals, HSSEWORLD Copyright All Rights Reserved 2022. Step 5: Shut off the nozzle and allow the water flow from the top, and confirm the absence of the air bubble inside the specimen. ASME B31.3 Process Piping Allowable Bolt Load And Bolt Stress Calculation Module, ASME B31.3 Process Piping Basic Allowable Stress Calculation Module, ASME B31.3 Process Piping Bend Calculation Module, ASME B31.3 Process Piping Blank Flange Calculation Module, ASME B31.3 Process Piping Branch Reinforcement Calculation Module, ASME B31.3 Process Piping Design Factor Calculation Module, ASME B31.3 Process Piping Design Pressure Calculation Module, ASME B31.3 Process Piping Elastic Modulus Calculation Module, ASME B31.3 Process Piping Fluid Velocity And Flow Rate Calculation Module, ASME B31.3 Process Piping Fluid Volume And Mass Calculation Module, ASME B31.3 Process Piping Hoop Stress Calculation Module, ASME B31.3 Process Piping Line Pipe Schedule Calculation Module, ASME B31.3 Process Piping Mass And Weight Calculation Module, ASME B31.3 Process Piping Minimum Temperature For Impact Testing Calculation Module, ASME B31.3 Process Piping Plastic Component Calculation Module, ASME B31.3 Process Piping Stress Factor And Flexibility Calculation Module, ASME B31.3 Process Piping Thermal Expansion Calculation Module, ASME B31.3 Process Piping Wall Thickness Calculation Module, DNVGL RP F115 Pipeline Pre Commissioning Calculation Module, CALCULATOR : ASME B31.3 Section 345 Pipe Test Pressure And Hoop Stress Check (Low Pressure Steel Piping), CALCULATOR : ASME B31.3 Section K345 Pipe Test Pressure And Hoop Stress Check (High Pressure Steel Piping), CALCULATOR : ASME B31.3 Section A345 Pipe Test Pressure And Hoop Stress (Low Pressure Plastic Piping), CALCULATOR : ASME B31.3 Pipe Hydrotest Liquid Volume And Dose Rate, CALCULATOR : ASME B31.3 Pipe Leak Test Gas Volume And Dose Rate, CALCULATOR : ASME B31.3 Metal Pipe Diameter And Wall Thickness Schedule, CALCULATOR : ASME B31.3 Table A-1 Low Pressure Metal Pipe Yield Stress Tensile Stress And Basic Allowable Stress Schedule, CALCULATOR : ASME B31.3 Table K-1 High Pressure Metal Pipe Yield Stress Tensile Stress And Allowable Stress Schedule, CALCULATOR : ASME B31.3 Pipe Test Pressure And Hoop Stress Check (General), CALCULATOR : ASME B31.3 Metal Pipe Maximum And Minimum Diameter Schedule, CALCULATOR : ASME B31.3 Section A328.2 Pipe Qualification Test Pressure (Low Pressure Plastic Piping), ttoltype : Wall Thickness Fabrication Tolerance Type, xfu : User Defined Negative Wall Thickness Fraction, tfu : User Defined Negative Wall Thickness Allowance, walltype : Hoop Stress Wall Thickness Type, St : User Defined Allowable Stress At Test Temperature, S : User Defined Allowable Stress At Design Temperature, Pru : User Defined Component Rated Pressure, OD/tn : Diameter Over Wall Thickness Ratio, Pt/P : Test Pressure Over Design Pressure Ratio, Sh/Sy : Hoop Stress Over Yield Stress Ratio ( 1), t* : Wall Thickness For Hoop Stress Calculation, tf : Wall Thickness Fabrication Allowance, dtoltype : Diameter Fabrication Tolerance Type, OD*/tn : Diameter Over Wall Thickness Ratio, c : Total Corrosion Allowance (Internal And External), DRu : User Defined Dimension Ratio SDR OR SIDR, St : User Defined Hydrostatic Design Stress At Test Temperature, S : User Defined Hydrostatic Design Stress At Design Temperature, HDB : Hydrostatic Design Basis At Test Temperature, Sh/HDB : Hoop Stress Over HDB Ratio ( 1), Rvu : User Defined Dose Volume Over Gas Moles Ratio, Rmu : User Defined Dose Mass Over Gas Moles Ratio, txu : User Defined Negative Wall Thickness Fraction, SMTSu : User Defined Specified Minimum Tensile Stress, SMYSu : User Defined Specified Minimum Yield Stress, S/SMTS : Basic Allowable Stress Over SMTS Ratio, S/SMYS : Basic Allowable Stress Over SMYS Ratio, hooptype : Hoop Stress Wall Thickness Type, OD/tn : Pipe Diameter Over Wall Thickness Ratio, Sh/SMYS : Hoop Stress Over Yield Stress Ratio, th : Hoop Stress Thickness (Pressure Containment), D/tn : Pipe Diameter Over Wall Thickness Ratio.