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INNOVATION JS
JSW ENERGY BOLT | ISSUE 1W ENERGY BOLT | ISSUE 1
How the team felt on the problem
JSWHEL, Sholtu being resolved? Team Members

Mr. Swarn Singh Pathania
All the members of the team were very
Mr. Yashveer Singh
Replacement Of Non Return Valve (NRV) Without happy, motivated and satisfied with the Mr. Vinay Kumar

work they performed.
Stoppage The Cooling Water (CW) System.
Any specific aspects which you may like

to mention?
header of Cooling water
drainage system header Nothing as such.

line. The cooling water
outlet of reactor was Innovating A Heavy Duty Puller

bypassed with an alternate
arrangement and directed

to the Drainage sump. This
was a temporary

arrangement which again
was resumed after the said

defective NRV was
replaced. Thus the

functioning of reactor was
not affected during these operations.
How and Why was the problem

identified? How was the problem solved?

During the annual maintenance of The cooling water outlet of reactor was
Unit#1,when the draft tube was emptied bypassed with an alternate arrangement
and inspected we found one broken and directed to the Drainage sump.

peace was lying in the draft tube which This was a temporary arrangement which

was later on identified as the of NRV flap again was resumed after the said Any specific aspects which Machine where they STUCK. activities till the GUIDE VANE
of Dual plate check valve in the Cooling defective NRV was replaced. you may like to mention? As the maintenance, team is out. Extra efforts put in to
water drainage system was delicately working on take the guide vane piece

header line. What were the challenges encountered? More often, we continuously the machine to complete out but all in vain.
developing as well as
The uncertainty of rise in temperature the annual maintenance in
It was decided that if the NRV of the said working on new ideas at How was the problem
drainage system is to be replaced it is of reactor. shop floor. Other day it was scheduled time. While doing solved?

going to stop the cooling of Transformer Impact of solution to the business? a call from maintenance so they hang up in pulling
reactor(which was in function and its team of KWHEP to have a up the "GUIDE VANE" out Our Mechanical team lead

temperature could rise) whose outlet is There could been the completed shut close look in the #4 from housing. They cannot by Mr Gopal Bahadur
being connected with the common down of plant for eight hours. advance their further Chattria (F/M) been the

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