ML12065A175

Email from Jeremy Groom to Anton Vegel, Subject: Callaway Documents Requested

ML12065A175
Person / Time
Site:	Callaway
Issue date:	07/12/2011
From:	Jeremy Groom NRC/RGN-IV/DRP
To:	Anton Vegel Division of Reactor Safety IV
References
FOIA/PA-2012-0110
Download: ML12065A175 (1)

Text

Veg*el, Anton From: Groom, Jeremy Sent: Tuesday, July 12, 2011 2:13 PM Vegel, Anton bject: Callaway Documents Requested Attachments: Callaway COLR.pdf: TS 315 & 316 in effect 20031021.pdf; TS Bases 315 & 316 in effect 20031021 .pdf

Tony, As requested. Here is what is attached (all were in effect October 21, 2003):

• Callaway Technical Specification 3.1.5, "Shutdown Bank Insertion Limits" and 3.1.6, "Control Bank Insertion Limits" and associated bases documents

• Callaway Cycle 13 Core Operating Limits Report The Technical Specification Bases for LCO 3.1.5 and 3.1.6 discusses the purpose of the rod insertion limits.

From the bases, "the shutdown bank and control bank insertion limits are established to ensure that a sufficient amount of negative reactivity is available to shut down the reactor and maintain the required SDM." The LCO requires that each shutdown bank be within insertion limits specified in the COLR. The rod insertion limits specified in the COLR are very simple (see page 8), shutdown banks greater than 225 steps and control banks greater than Figure 2. During the October 21, 2003 shutdowh event, I believe the rods were always above these limits.

Please let me know if you have any questions or need anything else.

Very Respectfully,

_remy R. Groom Resident Inspector, Callaway Plant U.S. Nuclear Regulatory Commission (573)676-3181 ieremy.groom @nrc.gov 1