ML19211C458

Errata to Tech Specs Page 3/4 3-29a Re Response Time for Diesel Generator Supplying Bus.Administrative Error Was Made in Table 3.3-5,Item 13.b.Correct Total Response Time Is 74-s

ML19211C458
Person / Time
Site:	North Anna
Issue date:	01/08/1980
From:	Stallings C VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
References
024, 24, NUDOCS 8001110430
Download: ML19211C458 (1)

Text

VIRGINI A ELECTRIC AND POWER COMP ANY, RICHMONO, VIRGINI A 23261 January 8, 1980 Mr. Harold R. Denton, Director Serial No. 024 Office of Reactor Regulation LQA/WRM:pwc Atta: Mr. A. Schwencer, Chief Operating Reactors Branch No. 1 Docket No. 50-338 Division of Operating Reactors U. S. Nuclear Regulatory Commission License No. NPF-4 Washington, D.C. 20555

Dear Mr. Denton:

In our previous submittal dated January 29, 1979 Serial No. 711A/120178, an administrative error was made in Table 3.3-5 item 13.b. We indicated that the 64 second response time was the total time until the diesel generator was supply-ing the bus when in fact it is the time until the diesel receives the start signal.

Therefore, in order to be technically accurate the time shown should include the sensing circuit maximum time delay (64 sec.) plus the FSAR commitment of a diesel response of 110 sec.

Total Time Max = 64 secs sensing 10 secs diesel 74 seconds supplying bus Therefore, a correction should be made on page 3/4 3-29a in amendment 16 to NPF-4 for North Anna Power Station Unit #1 to show a time of 74 see versus 64 seconds item 13b - No SI signal.

Very truly yours, C. M. Stallings Vice President-Power Supply and Production Operations cc: Mr. James P. O'Reilly Office of Inspection and Enforcement Region II 1735 140 8 "21.te