B.O.E Boiler Proficiency

Respected sir , i am very glad and happy to see your positive feed back . thanks now please suggest Reference book and material for B.O.E . i am basically B.E electrical engineer having 12 years exp in plant maintenance . now a days since 4 month i look in to boiler and gas turbine as a site manager so i need your help please.

DEAR SIR , I AM VERY GLAD AND THANK FULL TO YOU FROM JAYESH SATHWARA AS MANAGER POWER PLANT BAHRUCH GUJARAT INDIA

Sir I have applied for B.O.E from the state if Gujarat ( Bharuch). At present I am working in NTPC Ltd and i hace nearly 10 years of experience in boiler operation. I am working presently at Delhi. Can you please tell me name of a few books which i could purchase. I have tried a lot but i have no i idea about wht to study and from where. Regards Samir Kumar Singh email - removed - cr4 admin

dear dayanadhan,

Thank you for your interest, I'm from kerala, and i'd like to take BOE exam either in kerala or tamilnadu. I'm B.tech in mechanical engg. and working as site engineer for a boiler firm, in charge of erection and commissioning of their boilers across the south india.

wat are the criterias for appearing for BOE in tamilnadu?

and if possible kindly share some study materials required for BOE (krive_meen1@hotmail.com).

Thank you.

Dear DHAYANANDHAN.S

Just as you replied Jayesh100375 that passing of BOE exam is very simple, I would like to ask you some simple questions.

1) A boiler with no stamp. How would you size the safety valve.?

2) Two boilers were burnt with the same quality of coal & their flue gas analysis gave the identical reports. Are their efficiencies the same.? If yes, why.? If no, why not.?

Hope, you answer me these simple questions in mimimum possible time.

Mohanish

Dear Mr. Mohnish.powermech,

Your QUESTION can be viewed in TWO DIFFERENT ANGLE.

1. POSITIVE SIDE 2.NEGATIVE SIDE.

I TAKE YOUR QUESTION ON POSITIVE SIDE, and my reply is:

A BOILER WITHOUT STAMP SHOULD NOT or MUST NOT BE USED. The concerned Officer who accepted the Boiler without STAMPING should be questioned/action taken against him/terminate him and SEIZE HIS QUALIFICATION DEGREE/DIPLOMA

ON YOUR QUESTION FOR SIZING SAFETY VALVE THE REPLY IS on the BASIS ACADEMICAL ASPECT OR ACADEMICAL INTREST POINT OF VIEW ONLY - I reply.

1. Estimate the Heating Surface and MULTIPLY by the STANDARD for the EVAPORATION RATE. This gives the CAPACITY OF THE BOILER.

The Thickness of Drum. Bank Tubes, Super Heater Coils, Economiser Coils, Super Heater Steam Pipe going out of the valve etc. etc., can be measured/estimated. Apply the formula and calculate the Pressure and adopt the LOWEST of ALL THE PRESSURES as the Design Pressure of the Boiler.

Now Capacity is estimated, Design Pressure is estimated, and how to size the safety Valve is the next exercise. Super Heated Steam Pipe size is known, and hence AREA CAN BE CALCULATED. CAPACITY IS ESTIMATED and hence VOLUME of STEAM FLOW/SECOND is estimated. Using the Standard Velocity, based on these data, STEAM TEMPERATURE CAN BE ESTIMATED. HENCE SAFETY VALVE CAN BE SIZED.

COMING TO YOUR 2nd QUESTION " Two boilers were burnt with the same quality of coal & their flue gas analysis gave the identical reports. Are their efficiencies the same.? If yes, why.? If no, why not.?" -

The ANSWER IS THE BOILER EFFICIENCY WILL NOT BE THE SAME. The same quantity of Fuel and the Same Flue Gas Analysis are not the ONLY CRITERION for BOILER EFFICIENCY. The other criteria are, as you also know - the Feed Water Temp., the Blow-Down Quantity, Radiation Level of the Boiler(s), F.D Air Temp., Flue Gas Temp. after Air Heater, The Furnace Leakages, HEAT TRANSFER CO-EFFICIENTS for Boiler Bank Tubes, Super Heater etc. etc., will come in to account - which may vary in the boiler(s) singly or severally.

ON THE NEGATIVE ASPECT OF THE QUESTION - I do not reply since you may get offended.

The delay in reply is due to the reason - I DID NOT SEE THIS due to pressure of work and out of station for several days. However, the delay is regretted. Any further quiery or doubt you can ask.

Thanks.

DHAYANANDHAN.S

Really thanks Sir for the answers. The above questions were being asked for the American Boiler Proficient Engineers & so do I. I have many such questions & if you want, I'll ask them for the maximum so as to derive the most appropriate & correct answers for the same.

Dear Mohnishpowermech,

You can ask any number of question and you will get the answer from me or other CR4 MEMBERS. You can post the questions through the mail link available in the CR4 system, since after some time, no more posting will be accepted.

DHAYANANDHAN.S

1) Where would you find the pressure piping stamp on a steam header of a boiler that requires two (2) stop valves located 50 feet apart?

2) Before a person enters boiler, what do you need to do.?

3) Given: A 700 psi boiler drum, 36 inch diameter, and length 24 feet. What code would you reference to insure that a blow off tank was sufficiently built to handle this?

4) After a repair has been made and inspected by the Authorized Boiler Inspector, what else must be done?

5) What is the HP required for a feed water pump that is 80% efficient supplying a boiler with 200 psi?

6) With two boilers both at 100 hp one operating at 50 psi and the other at 100 psi would both safety valves be the same size?

All the above questions were asked in American Boiler Proficiency examination.

Dear My Self Nirmit Vyas I have two year exp in textile company in O&m Utility with 6ton/hour Boiler for process steam So plz guide Me I am Applicable for BOE exam Or Not My ID IS nirmit_vyas@atul.co.in

DEAR DHAYANANDHAN.S

I AM NIPUN VADALIA FROM GUJARAT. I AM VERY MUCH INTERESTED ABOUT THIS B.O.E. EXAM.NOW I AM WORKING IN ESSAR POWER LIMITED AS A TECHNO HR. MY JOB IS TO GIVE TRAINING TO FRESH ENGINEERS. I AM NOT IN OPERATION OR MAINTANCE DEPARTMENT SO MAY I ELIGIBLE FOR THAT EXAM.

REGARDS,

NIPUN.

Dear Mr. Nipun Vadalia,

The answer is NO. You should be engaged in the BOILER OPERATION and MAINTANANCE, FOR A MINIMUM OF 2 YEARS for Engg.Graduates.

DHAYANANDHAN.S

Dear friend,

You have mentioned " I AM NIPUN VADALIA FROM GUJARAT. I AM VERY MUCH INTERESTED ABOUT THIS B.O.E. EXAM.NOW I AM WORKING IN ESSAR POWER LIMITED AS A TECHNO HR. MY JOB IS TO GIVE TRAINING TO FRESH ENGINEERS. I AM NOT IN OPERATION OR MAINTANCE DEPARTMENT SO MAY I ELIGIBLE FOR THAT EXAM."

The answer is NO. You should have experience in the Operation and Maintanance of Boiler, a minimum number of years prescribed by the Boiler Dept.

DHAYANANDHAN.S