Q&A Report Session 23 - East and West.xlsx

	A	B	C	D
1	Question Report Session 23 East
2	Report Generated:	4/27/23 2:23
3	Topic	Webinar ID	Actual Start Time	# Question
4	Session No 23: Pumps for the Desalination Market Eastern Hemisphere	835 8009 4517	4/27/23 0:46	17
5	Question Details
6	#	Question	Asker Name	Answer
7	1	You mentioned there are dosing pumps, are these centrifugal pumps?	Shyam Kumar	Small OH1 pumps can be used for adding (for example) acids and alkalis for PH adjustment. But they are not dosing or metering pumps as such. These are normally precision positive displacement pumps. Piston pumps. A Google search of metering pumps will give you many examples.
8	2	I enjoyed that your explain on BB4 pump.	Reza Hassanzadeh Aghdam	Thank you
9	3	Which pumps are preferred by End Users - with diffusers or with volute?	Niranjan Pai	See Q9 below
10	4	Hi, Can we visit your Manufuacturing facility.	Sanil Chithambaran	Yes you most certainly can. I see that you are based in Abu Dhabi. I will ask our Middle East Sales Manager to contact you.
11	5	Can we say RP have full line range of pumps for DESAL ?	Balasaheb Ingale	Yes indeed we offer the full range of pumps for Desalination Plants.
12	6	Could you please show the image of the dosing pump? Is it readily available?	Shyam Kumar	Ruhpumpen does not make chemical dosing/metering pumps. A google search will show many options for you
13	7	and any participation certificate shall issue from Rhurpumpen	Sanil Chithambaran	Yes we can issue you with a Certificate of Attendance. Send an email to info@short-courses.ruhrpumpen.com and our marketing Dept will send you one
14	8	Please compare between balance drum, disc & piston	Shyam Kumar	Thrust Balance Disk vs Thrust Balance Drum Balance disk suitable for use in: Non-API applications Non-abrasive process fluids Applications without frequent pressure changes Applications without frequent transient conditions such as pressure drops Frequent stops and starts? Disk with “Lift-Off Device” can be considered. Smaller pumps with lower flows and heads. Balance Drum is suitable for all applications. Unlike the balancing disk the balancing drum has a constant radial clearance set by the pump design Balances large proportion (85-90%) of generated axial forces at the rated operating point Residual forces are handled by a thrust bearing which retains the rotor axial position Constant clearance allows the use of a balancing drum in all applications and it provides high reliability in applications with transients such as start up and run down, temperature changes, frequent starts and stops Used for API 610 pumps because the standard precludes thrust balancing by use of axial clearances (API 610 11th edition 6.7.1) so balance disk cannot be used
15	9	Whats your recommendation? BB4 or BB3 in the water industry for HP PUMPS? We know BB4 is cheaper than BB3 and leakage not dangerous.	Reza Hassanzadeh Aghdam	BB4 vs BB3 – Which one to choose? There is no straight forward simple answer to this question. Smaller sizes BB4 will have a price advantage, Larger sizes BB3 will. Lower flows tend towards BB4. Higher flows tend towards BB3 Lower pressures tend towards BB4 Higher pressures tend towards BB3 The crossover point BB4/BB3 is difficult to pinpoint in the abstract. BB3 advantage - opposed impellers (half facing one way, half the other) means thrust is naturally balanced and ring oil lubricated angular contact bearings are good even for large pumps (high flow high head) BB4 has in-line impellers so thrust handling a potential issue at higher pressures (number of stages) and hence higher thrust values. BB3 advantage - axially split case - means you can remove the top half casing to inspect the rotor and, if necessary, remove the rotating element to take it back to the workshop for action, leaving the pump casing in place on the baseplate and without disturbing the piping. In critical service a warehouse spare rotor will be available and the whole changeout process could be done in a day. BB4 pump – the whole pump needs to be removed from the baseplate and piping, and be taken to the workshop for disassembly and service API 610 hydrocarbon service - BB3 is mandatory (BB4 not allowed) API 610 water service - BB4 can be considered but is not fully compliant. BB3 is compliant.
16	10	What is the basis of selection amongst drum/disc/piston?	Shyam Kumar	See Q8 above
17	11	Thank you sir..had a great session .	Sathya suthavani Chandrasekaran	My pleasure.
18	12	Hi Simon, firstly thank you for your presentation. Which companies has desalination process licances and is RP approved manufacturer in theri list? Can you please share your opinions if you have any?	Göker Arcan	They virtually all have preferred or approved vendor lists. Being a Global Company, with a worldwide sales force, RuhRPumpen endeavours to be on all these lists.
19	13	How are we routing these connections?	Shyam Kumar	Question not understood.
20	14	What is the material of construction of the pumps used in Desalination industry?	Anonymous Attendee	Pumps in sea-water service are normally Super Duplex (D2) Pumps in non sea-water service are normally Duplex (D1)
21	15	Good job	Reza Hassanzadeh Aghdam	Thank you.
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25	Question Report Session 23 - West
26	Report Generated:	4/27/23 12:12
27	Topic	Webinar ID	Actual Start Time	# Question
28	Session No 23: Pumps for the Desalination Market Western Hemisphere	824 3262 8597	4/27/23 9:49	7
29	Question Details
30	#	Question	Asker Name	Answer
31	1	wich one is more suit able for water pipeline BB3 or BB4 and why?	Hf Yi	See Q 9 above
32	2	Is this presentation recorded and available for later viewing?	Dave Mellis	All attendees will be sent a Link to the YouTube recording as well as a PDF version of the Slideshow complete with Speaker Notes (effectively the Script)
33	3	How is the NDE bearing lubricated for BB4 pumps?	Anonymous Attendee	Ring Oil Lubricated
34	4	Probably withdrawing question. Looks like bearings at both DE and NDE are oil lubricated.	Anonymous Attendee	Correct!
35	5	Where we can found the PPT of this presentation?.	Anonymous Attendee	All attendees will be sent a Link to the YouTube recording as well as a PDF version of the Slideshow complete with Speaker Notes (effectively the Script)
36	6	Thank you!	Ahmed Darwish	My pleasure.
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