ML20064J261

Summary of 780628 Visit to Sys Engineering Labs in Ft Lauderdale,Fl,To Audit CPC Dynamic Software Verification Field Test Procedure. Logs Were Consistent W/Procedure in All But One Case

ML20064J261
Person / Time
Site:	Arkansas Nuclear
Issue date:	07/06/1978
From:	Bullock J OAK RIDGE NATIONAL LABORATORY
To:	Beltracchi L Office of Nuclear Reactor Regulation
References
NUDOCS 7901050048
Download: ML20064J261 (2)

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l OAK RIDGE NATIONAL l_ABORATORY cPCRATED BY UNION CARBlDE CORPORATION NUCLEAR DIVISION A

W POST OFFICE box X OAK RIDGE. TENNESSEE 37830 July 6, 1978

- L%kW L '.-if.Q~L 5 bY Mr. Leo Beltracchi Electrical Instrumentation 6 Control Systems Branch Division of Systems Safety -

Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, DC 20555

Subject:

Audit of "CPC Dynamic Software Verification Field Test Procedure" On June 28, 1978, a visit was made to the Systems Engineering Laboratories in Ft. Lauderdale, Florida, to witness a demonstration of the subject procedure. The procedure was dated June 23, 1978, (Rev. 0) and will be formally transmitted to NRC in the near future. A demonstration was con-ducted on Channel D to verify the results which have been previously obtained and formally logged by C.E. The logs were inspected and found to be consistent with the procedure except for one item. It was noted that step No. 7 requiring all disk numbers utilized during the test to be recorded in the test log had not been fully complied with. This was corrected by

,, the test engineer as soon as it was pointed out that no entries were made t for the DSVT program and DSVT input disk numbers. ,

1 l An ad-hoc demonstration was conducted on Channel B with exact agreement i with Channel D results on all five test cases. -

It was explained that the DSVT program operates as an overlay in the region

$3000-$3CBC and uses tne area $2000-$2C80 as a data storage / buffer area. A check was made of the system check-sum values ano it was noted that only the block 2 6 3 values were changcd from the pha: e II audited system.

The values of the addressable constants in Channel B were requested and l . appear in table I on the following page. It was explained that only KCAL will vary from case to case,

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TABLE 1 CC.4STANTS FOR DSVT CASE 17 (Primary Depressurization)

Pt. I.D. Valve 60 . 1.0 61 ' O ,

62 0 63 1.0 64 5.0 65 1.07 66 5.0 67 1.02 68 1.0 69 .99896 KCAL 70 0 71 1.0 72 1.0

-' 73 1.0 74 1.0 75 1.0

76 1.0 77 1.0 - .

78 6.574 79 -3.052 80 .535 81 -4.108 82 9.103 83 -4.108 84 .535 85 -3.052 86 6.574 87 1.1099 4

f-88 1.6384 x 10 l

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89 0 '

l 90 0 91 0 l

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In su= mary, the test was conducted in accordance with the procedure and the expected values shown in table III of the procedure were confirmed. The software and hardware environment was a duplicate of the ANO-2 CPC system.

I have included the addressable constants for review by others since it is outside the scope of my review.

Yours truly, g

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/ . B. Bullock mg

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