ML19319D722
| ML19319D722 | |
| Person / Time | |
|---|---|
| Site: | Crystal River, 05000303  |
| Issue date: | 08/10/1967 |
| From: | FLORIDA POWER CORP. |
| To: | |
| References | |
| NUDOCS 8003240742 | |
| Download: ML19319D722 (10) | |
Text
e O
=!
m 0
5 E
j i
O' O
800s24o 7 4 2
I Dockets 50-302 and -303 Supplement No. 3 March 14, 1968 p)
SUPPLD(ENT NO. 3 The information contained herein is submitted voluntarily in response to an oral inquiry by the AEC regulatory staff on March 8, 1968.
Supplement No. 3 includes ansvers to eigi+ " informal" j
questions on the following subjects:
Informal Question 8.
Liner Anchor 9.
Response Spectra 10.
Seismic Loads 11.
Dynamic Piping Response 12.
Containment Shell Tension 13.
Design Limits lb. Material Properties for Seismic Design 15.
Response of Instrumentation and Emergency Battery System to Seismic Loads
)
C Op\\
}
I 1
-i-
Docket 50-302 and -303 Supplement No. 3 March 14, 1968
(\\.
INFORMAL '
QUESTION Line anchor. Provide additional information on the proposed 8
design of assuring that the liner is not breeched at the anchor weld.
ANSWER The liner stiffeners are 3 in by 2 in. by 2 in angles velded to the 3/8 in. liner plate with 3/16 in. intensittent velds as shown on Figure 5-1.
The force required to tear the velds is 89 percent of the force required to tear the liner plate. However, the force required to pull out a concrete plug is only 24 percent of the force required to tear the liner plate.
1
}
t 8-1
Dockcts 50-302 and -303 Supplement No. 3 March lk, 1968
()
INFORMAL QUESTION Response si,ectra.
9 (a) Provide assurance that the spectra does not become less than the normalized El Centro spectra for periods greater than 1 sec.
(b) Confirm that the response spectra for maximum earthquake is twice that of the design earthquake.
ANSWER (a) The spectra does not become less than the normalized El Centro for periods greater than 1 second.
(b) The response spectra for maximum earthquake is twice that of the design earthquake as referenced in the PSAR Appendix 5A, Appendix 2I, and Section 5.1.2.3 5 O
9-1
Dockets 50-302 and -303 Supplement No. 3 March 14, 1968 INFORMAL QUESTION ~ Seismic Loads. Confirm that seismic stresses are c4ded linearly 10 and directly with other applicable stresses, t
ANSWER The seismic stresses are added linearly and directly with other stresses as shown on revised page SA-3 in Appendix SA of the PSAR.
O s0 1
t 1
l 10 10-1
' " " ' ~
y 7
y 9
Docksts 50-302 and -303 Supplement No. 3 March 14, 1968 INFORMAL QUESTION Dynamic piping response. Clarify the meanings of the statement 11 and Question 9.12 regarding fixed support for piping systems.
ANSWER Page 912-2 of Supplement No.1 of the PSAR has been revised for' further clarification regarding fixed support for piping
. systems.
O D
11-1
^~~
Dockets 50-302 and -303 Supplement No. 3 March 14, 1968
)
INFORMAL QUESTION Containment Shell Tension.
Confirm that the statements regarding 12 membrane tension in the costainment refers to the combination of membrane tension combined with flexural tension arising from pressure or thermal effects.
ANSWER Appendix SC of the PSAR, page SC-4 has been revised to confirm that-the membrane tension in containment refers to the combination of membrane tension combined with flexural tension arising from pressure or thermal effects.
I i
l
(
l l
L 12-1 l
_. ~,.
Docksts 50-302 and -303 Supplement No. 3 March 1h, 1968 k
INFORMAL QUESTI0IT Design limits. Confirm that the design limits referred to in 13 Question 9 11 refer to all Class 1 mechanical systems, and refer to the worst combination of seismic and other loads.
ANSWER Although Table 1 in the answer to Question 9.11 is entitled specifically to refer to internals, vessel supports, and piping, the stress limits given for the various loading combinations apply to all Class 1 mechanical systems. The " allowable" internals deformations shown in Table 2 in this answer are used as the design limits for the worst combination of seismic and other loadings.
The ASA piping code will be used to establish pipe design limits.
O 4
u 13-1 i
7
.=
Dockets 50-302 and -303 Supplement No. 3 March 14, 1968-
- F\\
INFORMAL QUESTION ~ Material properties for seismic design. Confirm that the material 14 property curves for the principal =aterials of construction of s
the primary coolant system will be supplied to DRL as soon as they become availa'ule.
AUSWER B&W vill provide stress-strain data normalized to the minimum yield strength values in Section III of the ASME code for the principal materials of construction, and will use these curves or stress strain curves obtained from an actual sample of the melt at temperature in the analysis to demonstrate compliance f
with the design limits.
i O b
1h_1 1
e e-9.,rmy e-
Dockato 50-302 and -303 Supplement No. 3 March 1h, 1968
(~h
~
INFORMAL QUESTION Response of instrumentation and emergency battery system to 15 seismic loads. Provide additional information on the ability of the instrumentation system and the emergency battery system to withstand the maximum seismic loads.
ANSWER The instrumentation system vill be designed and the instrumentation cabinets vill be located in the control room so that the maximum seismic loading combined with the appropriate damping factors will not affect the ability of the instrumentation systems to function properly to assure safe shutdown of the reactor if a trip signal is generated in the safety circuitry.
The ability of the emergency battery system to withstand the maximum seismic loads are described in the answer to question 9.13 in Supplement No.1 of the PSAR.
O g
19-1
-