ML20079M132
| ML20079M132 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 01/19/1984 |
| From: | Koester G KANSAS GAS & ELECTRIC CO. |
| To: | Gagliardo J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| KMLNRC-84-007, KMLNRC-84-7, NUDOCS 8401270189 | |
| Download: ML20079M132 (2) | |
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KANSAS GAS AND ELECTRIC COMPANY THE ELECTRC COMPANY GLENN L MOESTER M E PREllOENT-MUCLEAR January 19, 1984 Mr. J.E. Gagliardo, Acting Chief Reactor Projects Branch U.S. Nuclear Regulatory Commission jj q
Region IV 1)
T R23W 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76011 L
KMLNRC 84-007 Re:
Docket No. STN 50-482 Subj: Potential 10CFR50.55(e) Interim Report -
Positive Displacement Charging Pump Pulsation Dampeners
Dear Mr. Gagliardo:
This letter provides an interim report on a potential 10CFR50.55(e) concerning the pulsation dampeners for the positive displacement charging pump. This matter was initially reported by Mr. Harold Chernoff of Kansas Gas and Electric Company (KG&E) to Mr. William Johnson of the Nuclear Regulatory Commission, Region IV, on December 22, 1983.
During piping connection fit-up between the positive displacement charging pump and the discharge pulsation dampener for that pump, a discrepancy was identified concerning the as-fabricated weight of the dampener tank. The dampener was initially supported by size 15 spring can hangers that were locked with pins and rigid dummy snubbers.
When the spring can pins and dummy snubbers were removed, the dampener tank rose " topping out" the spring can hangers. At this point chain falls were used to support the weight of the tank and the spring cans were removed and found operable. Subsequently, the discharge pulsation dampener tank was removed and found to weigh approximately 4825 lbs.
(dry). This was 2720 lbs. less than the code data plate indicated weight of 7545 lbs. (dry). Ultrasonic testing and boroscopic examination was used to verify that tha dampener was properly constructed.
The dampener manufacturer, RECO Industries, Inc., was contacted in order to verify the constructed weight of the tank. RECO indicated that the correct dampener weight is approximately 4844 lbs. (dry) and that the nameplate and vendor drawings are in error by showing a weight of 7545 lbs. (dry).
O S
.r. a 7 201 N. Market - Wichita, Kansas - Mail Address: RO. Box 208 I Wichita, Kansas 67201 - Telephone: Area Code (316) 261-6451 h
. au s ll Mr. J.E. Gagliardo KMLNRC 84-007 January 19, 1984 A similar weight discrepancy was initially thought to exist with the suction pulsation dampening pipe for the same positive displacement charging pump, however, further investigation revealed that no weight discrepancy actually exists.
The existing condition has been documentea on a Startup Field Report (SFR). The code data plate on the dampener tank has been replaced with one reflecting the as-built condition of the tank. Size 13 spring can hangers have been installed temporarily to support the dampener until final disposition of the SFR is made. An evaluation of this matter is being conducted by the Architect / Engineer.
Upon completion of this evaluation, the SNUPPS Utilities will prepare a generic final report applicable to both SNUPPS projects.
In any event, the status of the potential 10CFR50.55(e) will be carried on the monthly status update as File 53564-Kil7. The final report or any significant new information will be submitted by separate correspondence. In the interim, please direct any questions concerning this subject to me or to Mr. Otto Maynard of my staff.
Yours very truly, b
por Glenn L. Koester l
Vice President - Nuclear GLK:bb cc: RCDe'.~oung JHolonich (2)
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