ML20072A883
| ML20072A883 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 06/08/1983 |
| From: | Lundvall A BALTIMORE GAS & ELECTRIC CO. |
| To: | Clark R Office of Nuclear Reactor Regulation |
| References | |
| REF-SSINS-6820 IEB-80-04, IEB-80-4, NUDOCS 8306130001 | |
| Download: ML20072A883 (13) | |
Text
. 0 1582.1 6.60 25,313 105.79 16.0 1483.1 6.182 26,845 112.18
,'f17.0 1359.1 5.662 28,262 118.09
),y 18.0 1267.7 6.278 29,574 123.55 19.0 1178.3 4.905 30,792 128.62 f
-20.0 1122.5 4.672 31,941 133.40
/~
25.0 1037.1 4.323 33,039 155.42 30.0 1001.8 4.189 42,327 176.71 35.0 955.72 4.013, 47,215 197.18
,,40.0 899.20 3.802 51,854 216.72 4510 829.36 3.545 56,179 235.10 50.0 734.09 3.236 60,115 252.06 e
80.0 734.09 3.236 82,138 349.14 j
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.,,. _ _., _ _... -.... ~ - - _ _., _... _..
Enclosure (1)
ABLE MSLB - MASS / ENERGY RELEASE ANALYSIS 1972 LICENSING METHODS ASSUMPTIONS INITIAL POWER LEVEL 100%
INITIAL STEAM GENERATOR LEVEL 35.06' ABOVE TUBESHEET (NORMAL LEVEL)
INITIAL STEAM GENERATOR INVENTORY 141,425 LBM (ADJUSTED 4.0%)
2 BREAK TYPE 6.3 FT GUILLOTINE AT S.G. N0ZZLE MASS / ENERGY RELEASE 20% M0ISTURE CARRiOVER - RUPTURED S.G.
STEAM SEPARATION RATE MULTIPLIER 100 REACTOR TRIP ON HIGH CONTAINMENT PRESSURE 9 4.75 PSIG DECAY HEAT DECAY HEAT CURVE AFTER REACTOR TRIP MFIV 0.9 SEC. DELAY + 80 SEC. STEP CLOSURE MSIV 0.9 SEC. DELAY + 6.0 SEC. LINEAR CLOSURE S.G. ISOLATION LOGIC ON HIGH CONTAINMENT PRESSURE (4.75 PSIG)
OR LOW S.G. PRESSURE (548 PSIA), WHICHEVER OCCURS FIRST 2
STEAM HEADER K FACTOR
- 17. (BASED ON 5.585 FT PIPE)
REACTOR COOLANT PUMPS REMAIN ON MAIN FEEDWATER ENCLOSURE 2 AUXILIARY FEEDWATER 0
WATER IN FEED PIPE (FLASHING)
INCLUDED IN ENCLOSURE 2 DATA UNTIL MFW ISOLATION, THEN 335 CU. FT. AT 441 BTU /LBM STEAM IN HEADER PIPE 4,000 LBM
-,.. - ~.
--e n.
n,
TABLE 3 (Page1)
Enclosure (1)
MAIN STEAM LIffE BREAK - PRELIMINARY MASS / ENERGY RELEASE TIME
- h. Ibm /sec hh, million 8TU/sec 0.1 see 16168.
17.78 0.18 15941.
17.53
.26 15714.
17.29
.34 15490.
17.04
.50 15059.
16.57
.66' 14652.
16.13
.98 13907.
15.32 1.52 12863.
14.18 2.12 11923.
13.15 2.52 11396.
12.57 3.12 10730.
11.84 3.52 10352.
11.42 4.12 9876.
10.90 4.52 9618.
10.62 5.12 9308.
10.28 5.52 9142.
10.10 6.12 8944.
9.883 6.52 8558.
9.433 7.12.
7578.
8.275 7.52 6819.
7.376 8.12 6240.
6.693 8.52 6176.
6.623 10.12 5908.
6.330 11.12 5710.
6.113 12.12 5484.0 5.866 13.12 5245.
5.604 14.12 5010.
5.348 16.12 4601.
4.901 18.12 4301.
4.573 20.12 4091.
4.344 22.12 3932.
4.171 25.12 3691.
3.909 28.12
- 3434, 3.629 30.12 3276.
3.458 35.12 2950.
3.105 40.12 2624.
2.753 45.12 2306.
2.410 47.12 2182.
2.277 48.72 2097.
2.186 48.92 1808.
1.885 49.12 1813.
1.889 50.52 1729.4 1.801 51.12 1686.
1.756 51.72 1415.
1.469 52.12 1211.
1.255 52.32 1081.
1.119 52.52 1177.
1.255 l
52.72 963.1 0.9956 52.92 888.3 0.9130
(
53.12 853.2 0.8810 53.32 937.2 0.9928 i
(
TABLE 3 (Page 2) 53.52 803.74
.8294 53.72 7 48.2
.7717 54.12 801.7
.8443 64.12 730.0
.760 74.12 740.0
.760 80.32 748.8
.772 82.32 489.
.535 82.72 172.
.185
.83.32 36.6
.0398 83.72 7.8
.00978 85.32 4.06
.00487 88.52 1.083
.001306 97.32 2.527
.003032 110.0 0.0 0.0 Mass Integra.1:
Energy Integral:
8 260800.lbm 2.792 x 10 8tu t
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t SUPPLFMENTAL RESPONSE TO URC OUESTION NO. 5 DATED 5/10/83 ouestion No. 5:
You assumed a 20% increase in material strength, it is requested that you make a statistical evaluation of the actual strength of materials used in the construction of the Calvert Cliffs containment and utilized in the design basis canability of the containment.
Resnonser A statistical evaluation of the actual strength of materials used in the construction of the Calvert Cliffs containment has been performed. These statistical results indicate that the actual mean of the material strengths based on the sample statistics is approximately 12% higher than the design yield strength of the major reinforcement and 16% higher than the design compressive strength of concrete (at 28 days). The following is a tabulation of the statistical properties of the material strength:
Design Description Design No. of Tests Mean Standard Coefficient (5) Mean Paraneter Strength n
m Deviation of Variation Design (nsi)
(nsi) d-3)
Strenrth f'c poured 1970 5000 189 5798 338 5.8h 16.0 f'c poured 1971 5000 1h4 643h 308 h.65 28.7 Fy fl0 bars 60000 58 67239 3481 5.18 12.1 Fy fil bars 60000 112 67902 3523 5.19 13.2