Piping Course

Noorul,

Do you have expierience with the lack of information about installation description and instructions on equipment and special piping items during installations. And if yes what did you do?

Freddy

f.stouthamer@planet.nl

Well Freddy,

I am working at CAD section, I am doing the project in the area of Paper Mill. I know lot of information about you mentioned matters. It is very interesting things.

The paper mill contains:

1.Chipper house

2.Cooking plant

3.Fibre line

4.Paper machine

5.Utility areas

6.Chemical recovery

7.Power production unit

8.& Other areas

Particularly which information you want?

What is the ASME code followed for design of piping systems in Process
pipings (Refineries & Chemical Industries)?
(i) B31.1
(ii) B31.3
(iii) B31.5
(iv) B31.9
Answer (ii)

ASME B31 Pressure Piping Codes

B31.1 Power Piping

B31.3 Process Piping

B31.4 Liquid Transportation Systems for Hydrocarbons, Liquid Petroleum

Gas, Anhydrous Ammonia and Alcohols

B31.5 Refrigeration Piping

Fine Aurel Mares

Weldon

What do you mean by following items?
i. )ISLB-400 ii) ISMB-600 iii) ISHB-350 iv) ISMC-300 v) ISJB-150 vi) ISLB-200
vii)ISMB-450 viii)ISWB-400 ix) ISJC-200 x) ISLC-350 xii) ISMC-250
Answer:
i. Indian STD light weight beam, Web size – 400
ii. Indian STD medium weight beam, Web size – 600
iii. Indian STD 'H' beam, Web size – 350
iv. Indian STD medium weight channel, Web size –300
v. Indian STD junior beam, Web size – 150
vi. Indian STD light weight beam, Web size – 200
vii. Indian STD medium weight beam, Web size – 450
viii. Indian STD wide flange beam, Web size – 400
ix. Indian STD junior channel, Web size – 200
x. Indian STD light weight channel, Web size – 350
xi. Indian STD medium weight channel, Web size – 250

Why don't you take the trouble to get off your seat and walk down the local market selling Beams, get their spec. sheets and ask them to show & detail you.

interested topic

ducon - you are correct.

suppliers are good consultant

but make sure for business they are not saleing you odd things, which is not advisable.

Sorry, please disregard this for I did not understand clearly your postings till I went through your website.It really missed my mind that you were not inquiring but actually answering for our information purpose.

What is this item?
i. ISA-100X100X12 ii) ISA-80X50X10 iii)ISLT-100X100
Answer:
i. Equal angle size 100x12 THK
ii. Unequal angle size 80x50x10 THK
iii. Indian STD light weight tee bar size 100x100

What is the difference between Pipe and Tube?
Ans: Pipe is identified by NB and thickness is defined by Schedule whereas Tube is
identified by OD.

Thank you for the detailed Q & A on Piping & Paper Mill Plant at your website.

As an Energy Conservation & Pipeline Designing Consultants this site is very informative for my next visit to any paper mill.

Question: Which Paper Plant are you working in ? What City/Country?

Thanks once again.

Thanks Ducon,

I am working as consultant. My PROJECT AND CONSULTANCY company is one of the specialist for Paper mill. We under take lot of project for Paper mills. The following projects are done by myself.

Abishek Industries Limited, Paper and Chemicals Division, Punjab, India

Mill Development Plan (MDP) comprising of ECF bleach pulp mill and

250 tpd printing and writing paper machine

The West Coast Paper Mills Limited, Karnataka, India
Feasibility study for Mill Development Plan comprising ECF/Ozone bleach

Pulp mill and 400 tpd printing and writing paper machine

Currently I am working as a consultant for

Sabah Forest Industries Sdn Bhd.- SABAH

Thanks amnoorulaman.I will keep in mind for any upcoming paper Mill in Pakistan requiring your specialized consultancy services.

Dear Amnoorulaman, You can contact Forbes Marshall Pune's Paper Divison for detailed Piping consultancy. Please contact to mail ID <<< ni@forbesmarshall.com>>

Also Contact Mr. Sandip Abhyankar of Forbes Marshall Pune , Paper Divison mail id <<< thermo@forbesmarshall.com>>

From which size onwards NB of pipe is equal to OD of Pipe?
Ans: From the size 14" and onwards NB = OD of pipe.

Write down the outside diameter of following pipe?
i. 3 inch ii) 6 inch iii) 10 inch iv) 14 inch
Answer:
i. 3 inch = 88.9mm ii)6 inch = 168.28mm
iii) 10 inch = 273.06mm iv) 14 inch = 355 mm(OD= Size X 25.4)

i cannot say about everybody but i like it since i'm a piping man. Keep it coming.

how post weld heat treatment prevent caustic embrittlement of carbon steel.

and

how heat traced piping system prevents condensate accumulation.

and

please explain me how can use of teflon bearing pads reduce friction loads

what is teflon bearing pads and what is friction loads.

Sandeep, start your own new thread and get the answers.

What is the difference between machine bolt and stud bolt?
Answer:
Machine bolt has a head on one side and nut on other side but stud bolt have nuts on
both sides.

What is soluble dam?
Answer:
Soluble dam is a water-soluble material used for restricting the purging gas within the
pipe.

Mr.Noorul Aman,

Sandeep asked the followings:

how post weld heat treatment prevent caustic embrittlement of carbon steel.

and

how heat traced piping system prevents condensate accumulation.

and

please explain me how can use of teflon bearing pads reduce friction loads

what is teflon bearing pads and what is friction loads.

What is your answer?

We've read and keep reading your questions & answers .

Do you have the answers or should Sandeep start a new thread?

Bearing units transfer the loads uniformly from the superstructure to the substructure, allow formovement of the superstructure due to thermal expansion or contraction, and allow fordeflections due to live loads on the structure.The bearing units are generally one of the following two types:

• TFE Bearings: A top plate made of steel with Teflon sliding on polished stainless steel.(An elastomeric pad is attached underneath the top plate.)

• Elastomeric Bearings: Solid or laminated neoprene pads.

------------------------

I am searching answer for remaining questions...

While welding of pipe trunion to pipe/reinforcement pad you have to put a hole
or leave some portion of welding why?
Answer:
For venting of hot gas which may get generated due to welding

What do you mean by following type of welding?
i. SMAW ii)TIG
Answer:
ii. SMAW = SHIELDED METAL ARC WELDING
iii. TIG = TUNGSTEN INTER GAS WELDING

What should be the radius of long radius elbow?
Answer:
1.5D (Where "D" is the diameter of the pipe)
14. Normally where do we use the following?
i. Eccentric reducers ii)Concentric reducers
Answer:
i. Eccentric reducers = Pump suction to avoid Cavitation, To maintain elevation (BOP) in
rack.
ii. Concentric reducers = Pump discharge, vertical pipeline etc.

Concentric reducer is used in pump suction. (Yes / No). Explain.
Answer:
No. Air pockets may form if concentric reducer is used at pump suction, which results in
Cavitation, and cause damage to Pump. To avoid this problem, Eccentric Reducer with
Flat Side Up (FSU)is used in Pump Suction.

What do you mean by Cavitation in Pump?
A pump is designed to handle liquid, not vapour. Vapour forms if the pressure in the
pump falls below the liquid's vapour pressure . The vapour pressure occurs right at the
impeller inlet where a sharp pressure drop occurs. The impeller rapidly builds up the
pressure which collapses vapour bubbles causing cavitation and damage . This is
avoided by maintaining sufficient NPSH.
(Cavitation implies cavities or holes in the fluid we are pumping. These holes can also
be described as bubbles, so cavitation is really about the formation of bubbles and their
collapse. Bubbles form when ever liquid boils. It can be avoided by providing sufficient
NPSH.)

amnoorulaman. Watch couple of my videos on Youtube.com as " condensate power pump" . The only pump that is not damaged by cavitation. These are a common items esp. for condensate pumping of very high temperature condensate of Cylinder Drying Ranges (Textiles/Towel/Paper) as well as on Heat Exchangers of Driers (Textile/Towel/Tannery/Bottling etc.) to overcome stalling.

dear amnoorulaman and ducon

i really appriciate both of you. your knowledge is excellent. even once i started to get such a detail knowledge from you and our cr4 brillients, i left my job in kenya. management refused to use condensate pump and they fixed normal centrifuge pump now that pump is tripping. i am failing there because of poor management and support so i left the company. there are several reason to left that company but one among them is the condensate pump. now i am in just search of new job where i can get good knowledge as well as handsome salary. thanks to increase my confidence.

What do you mean by NPSH? How do you calculate it?
NPSH: Net Positive Suction Head. NPSH is the pressure available at the pump suction
after vapour pressure is substarcted.
It is calculated as : Static head + surface pressure head - the vapor pressure of your
product - the friction losses in the piping, valves and fittings.
It thus reflects the amount of head loss that the pump can sustain internally before
vapour pressure is reached.

how much this NPSH can affect the pump performance?

NPSH is the characteristic of a centrifugal pump that indicates the conditions under which the pump will cavitate (i.e. vaporization or "boiling" of the liquid in the pump). Cavitation can result, at best, in "vapor lock" wherein the pump developed pressure falls drastically due to vapor displacing the liquid in the pump or, at worst, severe metal erosion and damage due to the formation and violent collapse of vapor bubbles within the pump.

hello Noorul aman.

how are you.I am student of Oil and gas engineering in the diploma stage.I want your help.In my P&ID course my teacher give me a Project in which I have to draw a P&ID diagram of Ammonia Manufacturing plant,But in reality I have no idea even where to start.Can you help me.

I am from Pakistan.Islamabad

I will wait for your kind reply.

Shehzad

Go to this site and read the Pdf.

http://www.epa.wa.gov.au/docs/998_B1036.pdf

Ammonia Plant, Burrup Peninsula.

First understand what , how, when, where etc., of the plant. Do all your ground work before you ask CR4 members to help you out. Go to your library. Get feed backs from your teacher. Find out where in Pakistan this is being made & by whom. Call on him.

Send your detailed background & detail what you understand from P & ID such that we may understand that you understand when we reply.

If you really do not have any idea where to start, ask your Teacher to change your Project subject to something you understand. Trust you understand.

Assalamu alaikum Shehzad.

Nothing more than DUCON's answer.

What is the ASTM code for the following?
i. CS pipe ii) CS fittings iii)CS flanges iv)AS pipe P5/P11 v)Cast CS Valves
Answer:
i. CS pipe = A106 Gr.B
ii. CS fittings = A234 Gr.WPB/WPBW
iii. CS flanges = A105
iv. AS pipe = A335 Gr P1/P11
v. Cast CS Valves = A216 Gr.WCB