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Minimum Lengths of Straight Pipe for Metering Runs

Posted by Antony Thomas at Wednesday, February 29, 2012

Minimum Length of Straight Pipe for metering Run (Orifice)

In order to maintain the accuracy for every metering runs the upstream and downstream of the flow orifice or flow meter should have straight pipe length. The following sketch illustrate the minimum straight length requirements.

Orifice Straight length Requirement (Upstream and Downstream)



































orifice flow meter straight run, upstream pipe run of flow meter, liquid flow measurement, meter runs

Senior Designer-Piping(PDS) Urgent Opening

Posted by Antony Thomas at Wednesday, February 22, 2012

Talascend Group company is a leading US Based MNC headquartered in Troy, Michigan (US), engaged in recruitments & staffing to its client companies across the globe.
One of our clients has a very urgent requirement. 

Position: Senior Designer-Piping(PDS) 


Location: Kolkata, India. 

Job Type : Contract (6 Months) 

Job Description: 
Job Title 
Senior Designer-Piping 

Education 
Diploma in Mechanical Engineering. (Candidates having ITI certificate may apply with minimum experience of 13 years.) 

Years of Experience 
Minimum 5-15 years in Piping Layout Design with about 5 years in lead designer role. 

Industry Type 
Refinery, Petrochemical, Chemical or related industry. 


Job Description 
Expert level Knowledge of 3D software PDS is a must. 
Knowledge of SPR is must. 
Excellent knowledge of Piping Layout philosophies and considerations is a must. 
Knowledge of Piping Codes like ASME B 31.3 is required. 
Knowledge about applicability of stress on layout considerations is required. 
Should be able to finalize support requirement for all non stress critical lines without input from stress. 
Knowledge of other 3D software like PDMS/ SP 3D/ COMOS is added advantage. 
Candidate should have good knowledge of inter discipline interactions and coordination. 
Candidate should be a good team player with some leadership skills and should have good communication skill. 

If interested please reply with your updated CV mentioning following details. 

? Current Salary: 

? Expected Salary: 

? Notice Period: 


Regards, 

Sunita Sharma 
Technical Resourcer 


+91 (124) 4599555 | Direct: +91(124)4599505 | sunita.sharma@talascend.com | www.talascend.com | Kalyani House, 2nd Floor, Plot No. 40 (Near SBI Academy), Sector 18, Gurgaon, Haryana, 122001 

Piping Designer Contract Position-Singapore

Posted by Antony Thomas at


Hi,
A client is looking for a Piping Designer for a 1 year contract position in Singapore. Urgent position to be filled.

Responsibility: 
- Provide project-engineering support for design, cost estimates on piping, material take-off and schedule.
- Technical expertise in design layouts for the modifications of mechanical, piping and civil works.
- Prepare quality mechanical, piping and civil drawings for project implementations and modifications to the plant and support facilities.

Required: 
- Background in petrochemical/refinery industry dealing with piping design.

If this is something you would be interested in, please send me your most updated CV and I shall get back to you at a convenient time to discuss the opportunity over the phone.


Regards
Lamia Haque

Progressive Global Energy & Natural Resources
Phone: +65 6591 5600
Email: l.haque@progressiveglobalenergy.com

Pipe Branch Reinforcement Pad requirement Calculation

Posted by Antony Thomas at Saturday, February 18, 2012

Download Branch Pipe Reinforcement Pad Requirement Calculation

Download the Pipe branch reinforcement pad requirement Calculation.

The branch reinforcement calculation is as per ASME B31.3

BRANCH REINFORCEMENT PAD REQUIREMENT CALCULATION

Piping Calculations, Pad requirement calculation, Pad thickness calculation, Piping reinforcement pad calc.

Process Piping Design Vol-1&2 pdf Download

Posted by Antony Thomas at Thursday, February 16, 2012

Process Piping Design by Rip Weaver

Contents of this Book Volume-1

1. General Piping

2. Process Terms

3. Plant Arrangement And Storage Tanks

4. Process Units Plot Plans

5. Piping Systems And Details

6. Pipe Fabrication

7. Vessels

8. Instrumentation

Process Piping Design_Volumn 1-01

Contents of this Book Volume-2

1. Pumps and turbines

2. Compressors

3. Fires Heaters

4. Exchangers

5. Piping Flexibility

Process Piping Design Vol. 2, Rip Weaver

PREVENT CORROSION AT PIPE SUPPORTS SOLUTION

Posted by Antony Thomas at Wednesday, February 15, 2012

Corrosion at pipe supports is one of the leading causes of process piping failures, which can have potentially catastrophic results (see related news). All styles of pipe supports, including beam supports and pipe saddles, create crevices where water is trapped and held in constant contact with the pipe surface. Once corrosion is initiated in these pockets, it can quickly undercut the paint film and move away from the crevice, causing rapid wall loss. If these conditions are not addressed, entire sections of pipe can fail and require replacement.

Related news

Pipe failure cited in Marcus Hook refinery fire.

Fire officials blame a May 2009 fire that destroyed part of Sunoco’s Marcus Hook refinery on a rusty 10-inch pipe that ruptured and caused a catastrophic natural gas leak. The pipe failure was caused by external corrosion on the bottom of the pipe ..

Problems

Not surprisingly, it is the beam supports and the saddle clamps that have historically caused the majority of the problems. They have the following undesirable features in common:

1. Crevice Forming - This is the root of the problem, the formation of a crevice at the pipe surface.
2. Water Trapping - These support types all allow water to be trapped and held in contact with the pipe surface.
3. Poor Inspectability and Maintainability - These support types make it virtually impossible to paint or otherwise maintain some areas of the pipe at the support. Visual inspection is often difficult, and until fairly recently, it was also very difficult to inspect these areas with NDT methods.
4. Galvanic Couple Forming - Some of these support types may develop bi-metallic contact. Even though both the pipe and support are steel, the metallurgical differences can still provide a small potential difference to drive a corrosion cell.

The Corrosion Mechanism

It is a common misconception that metal-to-metal contact coupled with water entrapment is the major cause of corrosion at these points. This is not the case; the sequence of events is as follows:

1. Water is trapped - The very nature of the supports allows water to be held in contact with the painted pipe surface as well as the paint on the support element.
2. The paint system fails - Even if the paint on the pipe and support beam are perfect, the paint system is designed for atmospheric exposure and not immersion service. The longer the paint surface is continuously exposed to water, the more it softens. As the pipe softens it is inevitable that the steel substrate will be directly exposed to the water.
3. Corrosion is initiated - The small area of steel now exposed to oxygenated water (often with high chlorides) starts to corrode.
4. Corrosion undercuts paint film - The initial corrosion soon undercuts and spreads  Soon the whole support area is bare steel.
5. Crevice corrosion starts - From this point on the crevice corrosion driven by differential aeration takes over from the general corrosion mechanism that initiated the corrosion. As corrosion products build they further restrict oxygen diffusion and the oxygen concentration gradient gets steeper. Pitting now becomes the main problem with corrosion rates acceleration by an order of magnitude.

6. Pipe fails - If the inspection program is not set up to detect this mostly concealed wall loss. The pipe will fail.

Historical Solutions

The industry has long been aware of the problem, but has failed to appreciate the true causes; this is evidenced by some of the solutions that have been implemented to stop the problem which have actually accelerated the problem.

Rubber Pads and Liners

As previously stated, it was thought that the metal-to-metal contact was the main problem causing pipe support corrosion. As a result, initial designs incorrectly targeted this aspect of the supports. Some operators still use rubber pads of varying types to solve the problem, despite industry knowledge that they are in fact counter productive.  In fact, rubber pads under pipes do a wonderful job of reducing the life of the pipe. The crevice that was formed without the rubber pad is mild in comparison to the new crevice, which now has the ability to actually suck water in (by capillary action). Not only does the pad invite water in, it is better at holding it trapped against the pipe surface, since air circulation and natural evaporation is eliminated. The situation is further worsened by the length of the crevice which allows an oxygen concentration gradient to go from full natural concentration to anaerobic in a few centimeters.

Fiberglass Pads

Contoured pads attached to the pipe at support points. Obviously, another attempt to eliminate metal to metal contact. This is better than the rubber pads but still allows a crevice to be formed at the pipe surface

Welded Supports

The welded support is a viable solution. However it adds significant cost to a typical project both in terms of construction and inspection. In some situations it would be undesirable to make so many external longitudinal welds to a pressured piping system. There have been some other solutions adopted; none of which really address the major cause of the problem: water entrapment!

Summary and Conclusions

When designing pipe supports avoid the use of saddle clamps wherever possible. Never use a rubber pad between a pipe and a pipe support if the area is exposed to a corrosive environment. When using U-bolts to stabilize piping, always used polyolefin sheathed bolts. The half round rod solution has proven to be very effective in controlling pipe support corrosion over the last 15 years on thousands of offshore structures.

pipe support corrosion

large_nubolt2

PRESENTATION ON OFFSHORE PLATFORM DESIGN

Posted by Antony Thomas at

Offshore platforms are used for exploration of Oil and Gas from exploration of Oil and Gas fromunder Seabed and processing.under Seabed and processing.

The First Offshore platform was The First Offshore platform was installed in 1947 off the coast of installed in 1947 off the coast of Louisiana in 6M depth of water.Louisiana in 6M depth of water.

Today there are over 7,000Today there are over 7,000Offshore platforms around the Offshore platforms around the world in water depths up to world in water depths up to1,850M1,850M

Platform size depends on facilities to be installed on top side eg. Oil rig, living installed on top side eg. Oil rig, living quarters, Helipad etc.quarters, Helipad etc.

Classification of water depths:Classification of water depths: ±  ± < 350 M< 350 M--Shallow water Shallow water  ±  ± < 1500 M< 1500 M --Deep water Deep water  ±  ± > 1500 M> 1500 M--Ultra deep water Ultra deep water  ±  ± US Mineral Management Service US Mineral Management Service(MMS) classifies water depths greater (MMS) classifies water depths greater than 1,300 ft as deepwater, and greater than 1,300 ft as deep water, and greater than 5,000 ft as ultra than 5,000 ft as ultra—deep water.deepwater

Offshore

AMEC QATAR: PIPING DESIGNER WITH OFFSHORE EXPERIENCE

Posted by Antony Thomas at

Greeting from ASMACS .
Please be informed that We are currently looking for the subject position for one of our top notch client AMEC, Qatar for their OXY Petroleum project .
Job description :
• Diploma with minimum 3 yrs of design experience in offshore oil and gas project .
• Candidates only with OFFSHORE DESIGN Experience and preferably with PMC/EPC organizations of repute
• Experience in Design and Engineering
• Experience in OFFSHORE Design Brown working at offshore, but in office doing DESIGNING works)
Terms & Conditions :
Position : Piping/structural/instrument Salary : 19,700USD/Annum + Accommodation
Allowances : Shall be discuss at the time of interview
Living Status : 30 days annual leave + 1 annual
Working hours : 8hrs X 6 days
Joining time : At the earliest ( March 1st /2nd week )
Duration of Contract : Long Term Contact
IF INTERESTED WITH ABOVE JOB PLEASE PROVIDE US WITH THE FOLLOWING INFORMATION:
1. Updated CV in word format :
2. Your acceptance of above terms & Conditions :
3. Notice period to join if selected :
4. Your current location & contact no :
Don’t hesitate to write me if you have any doubt .
Thanks & Regards
Sudhansu
+91 22 2855 5570
E mail : opu1@asmacs.net

Customizing AutoCADPlant 3D Isometrics

Posted by Antony Thomas at Wednesday, February 08, 2012

I have found the a great source of information about the  AutoCAD Plant 3D software customization.

The speaker tells about:

Understand the Different Customization Options in AutoCAD Plant 3D

Create and Customize a New Isometric Style

Add a Custom Title Block

Modify Isometric Symbols

In this link, you will learn how to customize the isometrics produced by AutoCAD Plant 3D so that they will meet your CAD and engineering standards as well as the standards of your client. This class will walk you through all the steps that are necessary to perform this task and give guidance based on practical experience for best practices for piping isometrics.

AutoCAD Plant 3D Isometrics

Custom Components in AutoCAD Plant 3D

One fundamental process that all AutoCAD-based plant design systems have to answer is “how do you create custom components.”  Today we are going to walk through the process of creating an pressure indicator for AutoCAD Plant 3D.

Because pressure indicators aren’t really a pipe fitting or valve, they are usually one of the most often created specialty types of components.

Here’s an outline of the steps we are going to follow to create our custom component.

1. Create a drawing that has the solids we want to turn into a component.

2. Block the items we want.

3. Add port information using the PLANTPARTCONVERT command.

4. Add our component to a catalog.

5. Add our component to a spec.

Custom Components in AutoCAD Plant 3D

WorleyParsons: Sr. Piping Designer–Abu Dhabi

Posted by Antony Thomas at Friday, February 03, 2012

Job Title

Senior Piping Designer

Job Type

Full-time

Open Date

25 January 2012

Advertising Category

Engineering/Design & Sciences

Education

Location

AE - Abu Dhabi Abu Dhabi, AZ, AE

Job Description

Position Title: Piping Designer

Position Reports To:

Lead Piping Designer

Primary Objective

  • Responsible for performing plant layout and piping design activities using project approved “in house” 3D CAD modelling and 2D drafting systems.

Specific Accountabilities

  • Produce the various discipline deliverables to the agreed schedule.
  • Apply recognized offshore engineering practices applicable to piping design and topside/plant layout.
  • Apply good interpersonal skills, liaising with members of other disciplines and departments.
  • Apply an awareness and willingness to work as a team member
  • Quality Assurance – work within the provisions and guidelines of the Quality Assurance systems.
  • Safety – Responsible for personal safety and working within the Occupational Health & Safety procedures.

Essential Skills/Experience

  • Trade course in mechanical draughting or equivalent. Diploma in engineering would be an advantage but not a must.
  • Familiar with the prime drivers related to offshore topsides layout design
  • Minimum 10 years proven experience in all aspects of piping/layout design within a design consulting/energy company involving design of substantial facilities for oil and gas companies.
  • A member of a piping design team on at least two major Greenfield projects offshore with a recognized company within the Oil & Gas Industry
  • A minimum of 2 years experience as a user of the 3D CAD modelling and 2D drafting system applicable to piping layout and design.
  • Must be capable of producing piping GA drawings and isometric drawings in AutoCAD.
  • A committed team player able to work on own initiative with the minimum of supervision
  • Exposure to fabrication, construction and installation activities desirable although detailed involvement is not essential.
  • Capable and fit to perform site verification of offshore piping systems in conjunction with the piping design.
  • Capable of generating piping general arrangement drawings based on equipment layout and P&IDs.

Matching Indicators

  • Knowledgeable in the design requirements for piping systems specific to each type of equipment.
  • Capable of relating P&ID’s against piping general arrangement drawings.
  • In depth knowledge in types of piping components used in the design of piping systems.
  • Capable in generating piping isometrics from piping general arrangement drawings and P&IDs.
APPLY

PIPING DESIGNER (PDS)–ALKHOBAR, SAUDI

Posted by Antony Thomas at

Job Title

Piping Designer (PDS)

Job Type

Full-time

Open Date

18 January 2012

Advertising Category

Engineering/Design & Sciences

Education

Location

SA - Al-Khobar Al-Khobar, AQ, SAUDI ARABIA

Job Description

Scope

  • Under the general supervision of Design Supervisor, he assists with development of Mechanical/Piping design drawings.
  • Prepares and updates drawings using CADD Microstation, knowledge of 3D PDS a plus.
  • Familiar with Saudi Aramco Drafting procedures, CADD Standards and Autosacs preferred.
  • Maybe assigned to any location or group within the WPC-MPP.

Principal Duties

  • Drafts, prepares and updates mechanical/piping drawings such as PID's, piping layout, plans and elevation, etc from piping isometrics, redlines, rough sketches, vendor data, reports and notes.
  • Checks drawings, designs and work prepared by others.
  • Makes site inspections and surveys to field verify designs and gather additional as-built data that may be required to resolve design issues and technical problems.
  • Maintains Drawing Controls and provides drawing status to Design Supervisor.

Job Requirements

Minimum Requirements

  • BS Degree in Engineering with five years minimum relevant experience in Oil and Gas industry (preferably offshore)
  • Excellent knowledge of English
  • Good command of CADD Microstation
  • Good skills with MS Excel and MS Word
  • Ability to Mentor Drafting Trainees

APPLY

Introduction to Pipe Stress Analysis Book Download

Posted by Antony Thomas at Thursday, February 02, 2012

INTRODUCTION TO PIPE STRESS ANALYIS

CONTENTS:

CHAPTER 1: PIPE STRESS ANALYSIS

CHAPTER 2: DESIGN OF PRESSURE COMPONENTS

CHAPTER 3: DESIGN OF PIPE SPAN CALCULATIONS

CHAPTER 4: ANSI PIPING CODES AND ASME CODES

CHAPTER 5: EXPANSION LOOPS AND EXPANSION JOINTS

CHAPTER 6: FLANGED JOINTS

CHAPTER 7: PIPING CONNECTING TO NON ROTATING EQUIPMENTS

CHAPTER 8: PIPING CONNECTING TO ROTATING EQUIPMENTS

CHAPTER 9: SPECIAL TOPICS

CHAPTER 10: NUCLEAR COMPONENTS CODE AND ASME SECTION III SAM KANNAPPAN. P.E Piping- Introduction to Pipe Stress Analysis

PIPING AND PIPE SUPPORT SYSTEMS DOWNLOAD

Posted by Antony Thomas at

Piping and Pipe Support Systems

Design and Engineering

CHAPTER 1: PIPING SYSTEM AND POWER PLANT EVOLUTION

CHAPTER 2: PIPING CODES, STANDARDS AND REGULATIONS

CHAPTER 3: TECHNICAL PIPING DOCUMENTATION

CHAPTER 4: OVERVIEW OF PIPESTRESS REQUIREMENTS

CHAPTER 5: PIPE DESIGN LOADS

CHAPTER 6: PIPE SUPPORT HARDWARE

CHAPTER 7: PIPING SUPPORT DESIGN PROCESS

CHAPTER 8: MANUAL CALCULATION METHODS

CHAPTER 9: COMPUTER APPLICATIONS FOR DESIGN AND ANALYSIS

PAUL R. SMITH, P.E.

THOMAS J. VAN LAAN, P.E.

Piping and Pipe Support Systems

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