ML20202H007
| ML20202H007 | |
| Person / Time | |
|---|---|
| Site: | North Carolina State University |
| Issue date: | 02/02/1999 |
| From: | North Carolina State University, RALEIGH, NC |
| To: | |
| Shared Package | |
| ML20202H001 | List: |
| References | |
| NUDOCS 9902050371 | |
| Download: ML20202H007 (5) | |
Text
. _. _ . ._ . _. . __ .
~
North Carolina State University PULSTAR Research Reactor License No. R-120 Docket No. 50-297 Affected Proposed Technical Specification Pages l
)
l 2 February 1999 l l
A OC 05 I fog 20
j Change Synopsis f
l The following corrected replacement pages to the proposed facility Technical l Specifications are part of the reference response to the Request for Additional
- Information.
Page 5 Corrected typographical error (multliplying corrected to multiplying) in the definition for Total Nuclear Peaking Factor in Definition 1.26.
Page 12 Replaced " nuclear total peaking factor" in Specification 3.1(f) with " total nuclear peaking factor" to match definition TS 1.26. ,
i l
f E ,
o
\
I UPDATED SAFETY ANALYSIS REPORT APPENDIX A ,
TECHNICAL SPECIFICATIONS FOR THE :
NORTH CAROLINA STATE UNIVERSITY PULSTAR REACTOR FACILITY LICENSE NO. R-120 DOCKET NO. 50-297 ORIGINAL ISSUE DATE: August 25,1972 AAENDhENT 13 3 February 1999 i
- - - ~ -. - ,. . - ..-. .~. - -- . . - .
n j
NCSU PULSTAR l-Technical Specifications 1.24 Senior Reactor Operator: A senior reactor operator is an (SRO) individual who is certified to direct the activitie.s of reactor operators.
1.25 Shutdown Margin: Shutdown margin means the minimum shutdown reactivity necessary to provide confidence that the reactor can be made subcritical by means of the control and safety systems starting from any permissible operating condition with the most reactive scrammable rod fully withdrawn, the non-scrammable rod i (Shim rod) fully withdrawn, and with experiments considered at their most 1 reactive condition, and finally, that the reactor will remain suberitical without further operator action.
1.26 Total Nuclear Peaking Factor: The factor obtained by multiplying the l
. measured local radial and axial neutron fluence peaking factors.
1.27 True Value: The true value is the actual value of a parameter.
1.28 Unscheduled Shutdown: An unscheduled shutdown is defined as any unpirmned shutdown of the reactor caused by actuation of the reactor safety system, operator-error, equipment malfunction, or a manual shutdown in response to conditions which could adversely affect safe operations. This does not include shutdowns which occur during testing or check-out operations.
l l
3 February 1999 5 Amen &nent 13
,. l
<+ NCSU PULSTAR Technical Specifications 3.0, LIMITING CONDITIONS FOR OPERATION 3.1 Reactor Core Confienration Anpliemhility .
This specification applies to the reactor core configuration during forced convection or natural convection flow operation.
Obiective The objective is to assure that the reactor will be operated within the bounds of established Safety Limits.
Specification The reactor shall not be operated unless the following conditions exist:
- a. A maximum of twenty-five fuel assemblies.
- b. A maximum of ten reflector assemblies of either graphite or beryllium or a combination of these located on the core periphery.
- c. Unoccupied grid plate penetrations plugged.
. d. A minimum of four control rod guides are in place.
- e. . The maximum worth of a single fuel assembly shall not exceed 1.59%Ak/k (1590 pcm).
- f. The total nuclear peaking factor in any fuel assembly shall not exceed 2.92 Bases Specifications 3.1(a) through 3.1(d) require that the core be configured such that there is no bypass cooling flow around the fuel through the grid plate.
Specification 3.1(c) provides assurance that a fuel loading ~ accident will not result in a Safety Limit to be exceeded as discussed in SAR Section 13.2.2.1.
. Specification 3.1(f) provides assurance that core hot channel power are bounded
' by the SAR assumptions in Appendix 3-B.
[ 3 February 1999 12 Amendment 13
. . _ - - _ _ - _ _ _ _ _ _ _ _