ML20237J482
| ML20237J482 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 08/12/1987 |
| From: | Tucker H DUKE POWER CO. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| NUDOCS 8708180196 | |
| Download: ML20237J482 (3) | |
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DUKE PowEn GOMPANY P.O. HOX 33180
- CHARLOTTE, N.O. 28242 HALH. TUCKER reizenown vms Panormant (704) 373-4531 NtMJLEAR Ph0DU(MON August 12, 1987 U.,S. Nuclear Regulatory Commission Attention: Document Control Desk-Washington, D. C. 20555
Subject:
Catawba Nuclear Station, Uni.., I and 2 Docket Nos. 50-413 and 50-414 Deletion.of Upper Head Injection System
Dear Sir:
By letter dated June 12, 1987, Duke Power proposed a Technical Specification amendment to support the deletion of the' Upper Head Injection.(UHI) System from-Catawba. to that letter provided a " gross estimate" of the radiation exposure anticipated during the implementation of this modification. Contained in was a note stating that these dose and curie estimates would be updated when Catawba specific data was available.
l.
Attached is an update to the previously transmitted information concerning the radiological aspects of UHI deletion.
This letter involves a supplement to a previous amendment request'for Catawba's Technical Specifications. Accordingly, a check for $150.00 is not required.
Pursuant to 10 CFR 50.91 (b) (1) the appropriate South Carolina State Official is being provided a copy of this amendment request..
If you have any questions concerning this submittal please contact Mr. Roger Ouellette at (704)373-7530.
Very truly yours, l
k p
l:
l Hal B. Tucker 0
RWO/104/sbn Attachment lv i n
8708180196 B70812 PDR ADOCK 05000413 P
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'U'.j5' Nuclear Regulatory Commission I.
- August 12,. 1987-l
'Page Two 1
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~ Dr. J.: Nelson Grace, Regional Administrator l
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.U. S.' Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323:
i-i Mr. Heyward Shealy, Chief Bureau'of Radiological Health.
l South Carolina Department of Health &
Environmental' Control 2600 Bull Street Columbia, South Carolina 29201 American Nuclear Insurers c/o Dottie Sherman,'ANI Library The' Exchange, Suite'245
'270 Farmington Avenue-
_Farmington, CT 06032 M&M Nuclear Consultants 1221 Avenue of the Americas New York, New-York. 10020 INPO Records Center Suite 1500 1100 Circle 75 Parkway Atlanta, Georgia '30339 Mr. P. K. Van Doorn NRC Resident Inspector Catawba Nuclear Station
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l RADIOLOGICAL ASPECTS OF UHI DELETION Dose Estimate Manhour Subtask (Person-Rem)
Estimate
- 1) Cut and Cap Auxiliary a) Duke 12.8 32 l
Head Adaptors b) Vendor 5.0 10-
- 2) Removallof Piping, 36.9 1640 l
Valves and Hangers
- 3) Cut and Cap Containment 0.75 150 l
- 4) Exposing Head Adaptors 24.5 700 l
(i.e., Remove DRPI Coil Stacks, CRDM Ventilation, Shield Installation /
Removal, Insulation Removal, etc.)
TOTAL 79.95 (per 2532 (per l
unit) unit)
Estimated general area dose rates are as follows:
a) 2-20 mr/hr along Auxiliary Building UHI piping b)' 20-30 mr/hr along lower containment UHI piping c)20-100 mr/hr along reactor head UHI piping d) maximum projected dose rates range from 1000 to 1500 mr/hr at the auxiliary head adaptors An estimate of the curies of beta and gamma radioactivity contained on the UHI components to be removed is 5.3 curies per unit.
l Rev. 1
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