AECM-83-0299, RO 83-038/0:on 830426,control Room Ambient Air Temp Exceeded Area Temp Limit of Tech Spec Table 3.7.8-1.Caused by Lack of Operating Control Room HVAC Subsys.Availability of Operability of Equipment Not Affected

RO 83-038/0:on 830426,control Room Ambient Air Temp Exceeded Area Temp Limit of Tech Spec Table 3.7.8-1.Caused by Lack of Operating Control Room HVAC Subsys.Availability of Operability of Equipment Not Affected

ML20071P305
Person / Time
Site:	Grand Gulf
Issue date:	05/26/1983
From:	Mcgaughy J MISSISSIPPI POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
AECM-83-0299, AECM-83-299, RO-83-038-0, RO-83-38, NUDOCS 8306070410
Download: ML20071P305 (2)

Text

, .*,

MISSISSIPPI POWER & LIGHT COMPANY Helping Build A1ississippi ,

P. O. B O X 164 0, J A C K S O N, MIS SIS SIP PI 3 9 2 05 May 26, 1983

-w J AMES P. McGAUGHY. JR.

..c........,

'Z p -

7 Office of Inspection & Enforcement 9 7[o U. S. Nuclear Regulatory Commission JCO,$y Region II o

~~~

101 Marietta St., N.W., Suite 2900 c::> Q3 Atlanta, Georgia 30303 n7 C11 '3 ,. ;

Attention: Mr. J. P. O'Reilly, Regional Administratur C11 >

Dear Mr. O'Reilly:

SUBJEC": Crr.nd Cul 'uclear Station Unat 1 Do.ket No. De-416 ucensa No. NPF-13 File 0260/L-835.0 Sye.il Report 83-038/0 -

Cratrol Room Area Temperature Exceeds Technical Specification Limits AECM-83/0299 On April 26, 1983, at 0730 hours0.00845 days <br />0.203 hours <br />0.00121 weeks <br />2.77765e-4 months <br /> the Control Room ambient air temperature exceeded the area temperature limit of Tcchnical Specification Table 3.7.8-1 (equipment operating). The excessive area temperature was a direct result of having no Control Room HVAC subsystems operating. At the time of the event occurrence subsystem "A" was inoperable due to a loss of power from the planned Division I electrical outage, and subsystem "B" failed due to a defective thermostat. The area temperature exceeded the Technical Specification limit for a total of 9.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> and the peak temperature during the LCO was 84*F.

Action (a) of Technical Specification 3.7.8 states that a Special Report is required to be submitted if the temperature limit is exceeded for more than eight hours. This report should provide a record of the amount by which ari the cumulative time the temperature in the affected area exceeded its limit and an analysis to demonstrate the continued operability of the affected equipment. The maximum qualification temperatures vary for different types of equipment in the Control Room. All Control Room equipment is qualified to a maximum of 90*F, therefore, an analysis to demonstrate operability of this equipment is not required. To provide further clarification, the 90*F limit is the lowest maximum temperature.

+ .{ i[.jfj ( qv:e 8306070410 830526 PDR ADOCK 05000416 g 6L2 '

S PDR Member Middle South Utilities System /

l'?- w e, AECM-83/0299 M13CICCIPPI POWER Q LICHT COMPANY Page 2 There was no affect on the availability of or operability of equipment within the area. This is being submitted as a Special Report pursuant to Technical Specification 6.9.2. This is a final report.

Yours truly,-

JPM: sap  !

cc: Mr. J. B. Richard Mr. R. B. McGehee Mr. T. B. Conner Mr. G. B. Ta;' lor Mr. Richard C. DeYoung, Director Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Document Control Desk U. S. Nuclear Regulatory Commission Washington, D. C. 20555

<