ML20070C574
| ML20070C574 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 12/08/1982 |
| From: | Devincentis J PUBLIC SERVICE CO. OF NEW HAMPSHIRE, YANKEE ATOMIC ELECTRIC CO. |
| To: | Knighton G Office of Nuclear Reactor Regulation |
| References | |
| SBN-403, NUDOCS 8212140235 | |
| Download: ML20070C574 (3) | |
Text
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s u a su m IPUE5LIC SEFtVICE f.-4::1., Office:
Companyof NewHampshre 1671 Worcester Road Framinoham, Massachusetts 01701 (617) - 872-8100 December 8, 1982 SBN-403 T.F. B7.1.2 United States Nuclear Regulatory Commission Washington, D. C.
20555 Attention:
Mr. George W. Knighton, Chief Licensing Branch No. 3 Division of Licensing
References:
(a) Construction Permits CPPR-135 and CPPR-136, Docket Nos. 50-443 and 50-444
Subject:
Open Item Response; (SRP 4.2; Containment Systems Branch)
Dea r Sir:
In response to an open item identified by Mr. Dale Powers of the Containment Systeins Branch, we will revise FSAR Section 4.2.2.3.a as delineated on the attached annotated page (p4.2-14).
This revision to FSAR Section 4.2.2.3.a will be included in OL Application Amendment 48.
Very truly yours, YANKEE ATOMIC ELECTRIC COMPANY l
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Project Manager ALL/fsf
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I G212140233 821208 PDR ADOCK 05000443 A
ASLB-SERVICE-LIST Philip Ahrens, Esquire Assistant Attorney General Department c' the Attorney General Augusta, ME 04333 f
Representative Beverly Hollingworth Coastal Chamber of Commerec 209 Winnacunnet Road Hampton, NH 03842 William S. Jordan, III, Esquire Harmon & Weiss 1725 I Street, N.W.
Suite 506 Washing ton, DC 20006 E. Tupper Kinder, Esquire Assistant Attorney General Office of the Attorney General 208 State House Annex Concord, NH 03301 Robert A. Backus, Esquire 116 Lowell Street P.O. Box 516 Manchester, NH 03105 Edward J. McDermott, Esquire Sanders and McDermott Professional Association 1
408 Laf ayette Road Hampton, NH 03842 Jo Ann Shotwell, Esquire Assistant Attorney General Environmental Protection durcau Department of the Attorney General One Ashburton Place, 19th Floor Boston, MA 02108 i.
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SB 1 & 2 FSAR Fuel depletion and fission product buildup.
a.
b.
Cold to hot, zero power reactivity change, Reactivity change produced by intermediate term fission products c.
d.
Burnable poison depletion.
The chemical and volume control system is discussed in Chapter 9.
The rod cluster control assemblies provide reactivity control for:
a.
Shutdown.
b.
Reactivity changes resulting from coolant temperature changes in the power range.
Reactivity changes associated with the power coefficier.t of c.
reactivity.
d.
Reactivity changes resulting from void formation.
Figure 4.2-8 illustrates the rod cluster control and control rod drive mechanism assembly, in addition to the arrangement of these components in
{
the reactor relative to the interfacing fuel assembly and guide tubes.
In the following paragraphs, each reactivity control component is described in detail. The control rod drive mechanism assembly is described in Subsection 3.9(N).4.
The neutron source assemblies provide a means of monitoring the core during periods of Iow neutron level. The thimble plug assemblies limit bypass flow through those fuel assembly thimbles which do not contain control rods, burnable poison rods, or neutron source rods, Rod Cluster Control Assembly s.
The rod cluster control assemblics are divided into two categories:
control and shutdown. The control groups compensate for reactivity
/
changes associated with variations in operating conditions of the reactor, i.e., power and temperature variations. Two nucicar design criteria have been employed for selection of the control group. First the total reactivity worth must be adequate to meet the nuclear requirements of the reactor.TSecond, in view of the fact that these rods may be partially inserted at power operation, the total power peaking factor should be low enough to ensure that the power capability is met.
The control and shutdown group provides adequate shutdown margin.
s is verfled by erformi'kJ ro warm rneasarements
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at +he firs-b res{ art effer each refuelig.
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4.z-14
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