ML19319D209
| ML19319D209 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 08/10/1978 |
| From: | Stewart W FLORIDA POWER CORP. |
| To: | Reid R Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8003130809 | |
| Download: ML19319D209 (5) | |
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REGUI ATORY INFORMAT lON DISTRIBUTION SYSTEM ( r:1DS )
DI.?TRIDUTION FOR It'COMINO t1ATERI AL 50-302 REC: REID R N ORU: :TENART W P DOCDATE: 09'10/79 NRC F;. PWR DATE RCVO. 09/14/79 DOCTYPE: LE" ER NOTAR I'7 CD. YES COPIES PECEIVED sui 3 JECT-LTE 1 EMCL 40 RESPONSE TO NRC REQUES'I OF 03/02 /70.
FURNISHING ADDi.. }NFO COTICEl(N1NG DECAY HEAT PUMPS 1A AND 1D AT SUBJECT FACILITY NOTARIZED 03/10/78.
W'ATT DIAGRArt PLANT NAME: CRYSTAL RIVER #3 REVIEWER INITIA -
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3ENERAL D1.STRIBUTION FOR hFTER ISSUANCE OF OPERATING LICENSE.
(DISTRIEUTION CODE ALO1)
FOR ACTION:
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F1karicha W. P. STEWART, DIR ECTOR POWER PRODUCTION August 10, 1978 Mr. Robert W. Reid Chief Operating Reactors Branch #4 Division of Operating Reactors U. S. Nuclear Regulatory Commission Washington, D. C. 20555
Subject:
Crystal River Unit 3 Orerating License No. DPR-72 Docket No. 50-302
Dear Mr. Reid:
On August 7, 1978, Florida Power Corporation received your letter of August 3, 1978, requesting additional information concerning Deccy Heat Pumps IA and IB at Crystal River Unit 3.
Specifically, you requested that FPC respond to Questions 1 and 5 within seven days of the date of your letter and supply the responses to Questions 2, 3, and 4 as soon as possible.
In response to your August 3, 1978, request, Florida Power Corporation hereby submits the following information:
Question 1 (1): Verification that minimum required flow and head characteristics are maintained will be accomplished by the performance of Surveillance Pracedure SP-340 "ECCS PUMP OPERABILITY". This pro-cedure exceeds the requirements of Section XI of the ASME codes for Inservice. Inspection.
Both flow and head values are compared to design conditions. An engineering review of the pump's condition will be required if the measured data falls outside the acceptance range of 102-94% of design flow or 102-93% of design differential pressure.
SP-340 is required to be repeated on a monthly basis in all modes of operation.
W01(8/9) 6 N
General Office 3201 Trurry tourin street soutn. P.O Box 14042, St. Petersburg. Fionda 33733 813-866-5151
' Mr. ' Robert Reid August 10, 1978 Question 1 (2): Verification that impeller rubbing and excessive vibration do not exist for DHP-1A will be accomplished by a s<scial performanca test.
Besides monitoring the thermo-hydraulic conditions, an extensive vibration program will also be conducted. Figure 1 (attached) shows the preliminary layout of sensing points for the test. The sensors are magnetic based accelerometers. Each sensing point has received some surface preparation and has a pad (flatwasher) attached. The raw signal from each sensor will be amplified and sent to an analyzer and X-Y plc. iter.
The information collected will be compared to the vibrational charac-teristics of DHP-1B.
Since DHP-1B is considered to be an operation-ally acceptable unit, it serves as a good standard for comparison pur-poses. The data taken on DHP-1A will also be compared to industrial standards (i.e., IRD severity chart) for acceptance.
The absence thereof or degree of rubbing or component impact will be determined by analysis of both the broad band noise and the demodu-lated accelerometer resonance data from the pump casing sensors.
A.T.M.I. " Shock Pulse Meter" will also be used as a backup indication of component centact.
The degree of indication that rubbing or excessive vibration exists will dictate whether or not further testing or corrective maintenance is necessary.
Question 1 (3): A thorough inspection of DHP-1A will be conducted at the conclusion of the testing program described in Question 1 (2).
The inspection will consist of complete disassembly of the pump or visual inspection by boroscope or other means.
Question 5: A thorough inspection of DHP-1B will be conducted as per your request. The inspection will consist of complete disassembly of the pump to verify proper alignment between the pump impeller and casing. A report of the results of this inspection will be submitted as soon as possible following the inspection.
Information in response to Questions 2, 3, and 4 is currently being gathered and will be submitted as soon as possible.
Very truly yours, FLORIDA POWER CORPORATION 6
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W. P. Stewart-ECS/ldd Attachment cc: File: 0-3-0-3
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W01(8/9)
STATE OF. FLORIDA COUhTY OF PINELLAS W. P. Stewart states that he is the Director, Power Production, of Florida Power Corporation; that he is authorized on the part of said
, company to sign and file with the Nuclear Regulatory Commission the information attached hereto; and that all such statements made and matters set forth therein are true and correct to the best of r
his knowledge, information and belief.
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W.' P. Stewart Subscribed and sworn to before me, a Notary Public in and for the State and County above named, this 10th day of August, 1978 j
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Notary Public Notary Public, State of Florida at Large, My Comeission Expires: July 25, 1980 9
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FIG. 1 LAYOUT OF DHP SENSING POINTS MACHINE SKETCH H
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SENSING POINT LISTING PT.
DESCRIPTION
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DESCRIPTION A
motor 0.B. bearing - radial G
pump casing - axial B
motor 0.B. bearing - axial H
discharge flange - vertical C
motor I.B. bearing - radial I
discharge flange - horizontal D
pump bearing - radial J
bearing housing - axial E
motor housing - side panel K
suction flange - vertical F.
pump casing - vertical L
foundation - vertical e