ML19337A128
| ML19337A128 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 07/29/1980 |
| From: | Moody D Maine Yankee |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| IEB-80-16, WMY-80-113, NUDOCS 8009080541 | |
| Download: ML19337A128 (3) | |
Text
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7n-MAIREW UARHEE amm:0FansccmFARS
- 7 TURNPIKE 90AD (RT. 9)
ENGINEERING OFFICE WESTBOR O, MASSACHUS ETTS 01581 617-366-90t1
-. _.,J O B.4.1.1 WMY 80-113 July 29, 1980 United States Nuclear Regulatory Commission Office of Inspection ano Enforcement Region I 631 Park Avenue King of Prussia, Pennsylvania 19406 Attention:
Mr. Boyce H. Grier, Director
References:
(a) License No. DPR-36 (Docket No. 50-309)
(b) USNRC Letter to MYAPC dated June 27, 1980; IE Bulletin No. 80-16
Subject:
Response to IE Bulletin No. 80-l6, Potential Misapplication of Rosemount Pressure Transmitters
Dear Sir:
Your letter, Reference (b) revealed a potential misapplication problem on Rosemount, Inc. pressure transmitters commonly utilized in both pressure and differential pressure applications. Maine Yankee has completed the necessary review and offers the following information, numbered to correspond with the Bulletin.
The following information is submitted in response to your request for estimates of manpower expended in the research and subsequent performance of actions associated with this letter / bulletin / document:
Manpower Requirements Hours Bulletin Response 37 Manhours Corrective Actions Not Applicable It should be clearly understood that this information is not adequate to enable a value/ impact assessment. The cost of equipment and installation, and the cost of additional resources to perform additional work are also necessa ry.
In addition an adequate determination of the safety improvement as a result of this document needs to be included.
8000080541
United States Nuclear Regulatory Commission July 29, 1980 Attention:
Mr. Boyce H. Grier Page 2 Response to Question #1:
Table 1 (attached) lists all present and future uses of Rosemount, Inc.
transmitters.
Response to Question #2:
Again, Table i provides the appropriate information accumulated during our review.
Item 4 is the only safety-related use of the transmitters in question. Our review and evaluation has found no case where this transmitter could provide anomalous indications to the operators.
Response to Question #3:
As a result of our review and evaluation we have determined that no corrective actions are required.
We trust this information is satisfactory; however, should you require additional information, please contact us.
Very truly yours, MAINE YANKEE ATOMIC POWER COMPANY O-Donald E. Mood Manager of Operations RHG/ din Attachment i
a TABLE 1 Possible Valve at which an anomalous Transmitter Transmitter Transmitter Process Range indication could Fu nc t ion Model No.
Range Limits Range Setting No rmal Accident occur Safety-Related
- 1. Reactor Vessel 1151-HP-5A-22M8 0-125 in. H O 0-345 inch Refueling NA 1050 in H O No 2
2 Refueling Level 0-750 in. H O Level 2
- 2. PCC Wtr. to PCP 1151-HP-5A-22MB 0-125 in. H O 0-708 in. H O 50 in. H O 800 in. H O 1050 in. H O No 2
2 2
2 2
Seats 0-750 in. H O 2
- 3. High Pressure 1151-HP-5A-22MB 0-125 in. H O 0-554 in. H O 85 in. H O NA 1050 in. H O No 2
2 2
2 Turbine Cylinder 0-750 in. H O 2
Heating Steam Flow
- 4. Reactor Coolant 1152-HP-6D-93#@B 0-17 paid
-4 to 80 paid 40 paid 0 paid
-40 psid Yes Flow 0-100 paid 42 paid 140 paid
- 5. condenser 1151-AP-4A-22MB 0-4 in. HgA 0-6 HgA 3.5 HgA NA
-4.4 HgA No Absolute Pressure 0-11 in. HgA
+15.4 HgA
- 6. Diffuser Vacuum 1151-CP-5A-22MB 0-125 in. H O 0-204 in. H2O 82 in. H2O NA
+1050 in H2O No 2
0-150 in. H O 2
B
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