ML20003F966
| ML20003F966 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 04/22/1981 |
| From: | Olson R L BALTIMORE GAS & ELECTRIC CO. |
| To: | Clark R Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8104270249 | |
| Download: ML20003F966 (4) | |
Text
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CALTIMORE
-f GAS AND -
3 ELECTRIC i,
CHARLES CENTER. P.O. BOX 1475 BALTIMORE. MARYLAND 21203 ELEctnic ENGWEERING April 22, 1981 i
DEPARTMENT g'
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Office of tiuclear Reactor Regulation C
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U.S. Isuelear Regulatory Ccemission g
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'iashingten, D.C.
20555 N
ATTI:
Pr. Ecbert A. Clark, Chief hj p
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Operating Eeactors Branch #3
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Division _of Licensing s
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Subject:
Calvert Cliffs I;uelear Fover Plant Unit !!os. 1 & 2, Decket I;os. 50-317 & 50-318 Containment Sump and Insulation Information
References:
(a) !IPC letter dated 11/h/30 from Clark to Lundvall, TAP A h3 (b) BGLE letter dated 3/3/61 frc: Olson to
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Clark, scre subject.
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Gentlenen:
Reference (a) requested certain information concerning the containment sump design and the insulation used inside centainment at Calvert Cliffs. Reference
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(b) provided the requested information with the exception of question 2-(d), which asked for the location and quantity of insulation in ecntainment. That information is provided in the attached Table 1.
I For your convenience, the following is a sustary of our reference (b) t esponse to questions 2 (a), (b), and (c) concerning insulation type, brand and method of attachment. This information is based on sn investigation of Unit !!o.1 documents and is believed to be applicable to toth i' nits.
The insulation in containment (both.: nits) was either nanufactured by Transco, Inc. or by Forty-Eight Insulations, Inc. and then supplied to Transco, Inc.
The insulation used was either reflective er nineral vool. Reflective panels consist generally of a sheet of 22 gauge stainless steel (S.S.), 9 or 10 sheets of.002'. S.S. foil and a sheet of 2h Ga. S.S.
End closures are 26 Ga. S.S.
Most panels are reinforced using a stainless steel nsil fixed through the section.
Mineral vool panels generally consist of a E2 Ga. S.F. sheet, a thickness of 8 pcund density E.T.E. mineral voel, and a M Ca. E.S. sheet. End closures again are 26 Ga. S.S.
Deviations from these ccqositiens are listed in Table 1.
8104270 W P
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' April 22, 1981 Insulation panels or sections are attached to equipment insulation support frames or angles. and to piping using combinations of C-clips,.-Z-clips,
- interlapping panels, and quick-release buckles. :Some reactor vessel insulation is permanently attached using self-tapping-screws.
We would be interested in seeing the results' of the. tests for which I
.this information was requested when they are available.
Very truly your
' //
R. C. L. Olson Principal Engineer Nuclear. Licensing & Analysis Unit t
cc:
J. A.-Biddison, Esquire G. F. Trowbridge, Esquire Mr. E. L. Conner, Jr.-NFC.
Mr. J. C. Ventura - Eechtel Mr. R. E. Architzel - NRC N
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TABLE 1 Insulated Equipnent in Containment n-g Location Type Quantity Rerecor Coolant Mineral W.>ol 265 sq. ft. of 3 " (each)
Pumps Steam Generators lective 535 sq. ft. of 10 ply (3 ") (each)
.:eral Wool 1460 sq. ft. of 3\\" (each)
Pressurizer L 'lective 50 linear feet of 10 ply (3h") on 12 3/4" cD Surge Line pipe (All 24 Ga. sheeting)
Coolant Leop Pr#1ective Hot Legs (Total)
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23 linear feet of ID~ ply 3 ")"on 49 3/4" OD pipe Cold Legs (Total) 1 45 linear feet of 10 ply (3 ") on 35k" OD pipe
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Regenerative
- tineral Wool 135 sq. ft. of 3\\"
Heat Exchanger i
Pressurizer Pet 1ective 265 sq. ft. of 10 p1'y (3b")
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Mi,cral Wool 720 sq. f t. of 3\\"
2eactor Vessel lec tiu 635 sq. ft. of 9 ply (3")
(some 2" 8 ply near neutron detectors)
Fixed insulation held by self tapping
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screws Beactor Dcce Mi.eral Wool 330 sq. ft. of 3\\"
(18 2nd 22 Ca. shecting)
Reactor Cavity Reflective 1420 sq. ft. of 9 ply (3")
Letdown Minerr.1 Wool 48 linear ft. of 2 " on 2" line Line Safety Mineral Wool 170 linear ft. of 3\\" on 12" line
'njection 100 linear ft. of 3\\" on 6" line P00RBREEL
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Location M
Quantity
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Charging
-Mineral Wool-- 1 l
590 linear-f t;' of 2h" on 2" line
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Piping RCS Vents Mineral Wool 40 linear lt. of 25" en 2" line and Drains Pr::surizer Mineral Wool 20 linear ft. of 2" on 3/4" line a SefetyhadEn>e&~ALMe '"OlmENW3"'M11&nenedreof43" onl4" -line u:M K;AM7; n
R211ef Valves (Upatream)
Pressurizer Mineral Wool 180 linear ft. of 2 " on 3" line Spray 2 linear ft. of 2" on 3/4" line 10 linear ft. of 3" ca 4" line Recctor Coolant Mineral Wool 20 linear ft. of 2" on 3/4" line Pump Bleed N
.hutdown Mineral Wool 5 linear ft. of 3h" on 12" line Cooling RCS Pressurizer Mineral Wool 2 linear f t.
of 2" on 3/4" line End P00R BR M A
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