ML20214D974

Informs of Drafting Error Discovered on Equipment Environ Qualification (Eeq) Containment Temp Qualification Envelope, Submitted as Figure 1 in 870423 Ltr on Status of Eeq Insp Findings.Corrected Figure Encl

ML20214D974
Person / Time
Site:	Big Rock Point File:Consumers Energy icon.png
Issue date:	05/15/1987
From:	Frisch R CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
NUDOCS 8705210577
Download: ML20214D974 (3)

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Consumers i

@ esswaums AIEMIEAN5 PRBERE55 Power General offices: 1945 West Parnait Road, Jackson, MI 49201 + (517) 788 0550 May 15, 1987 Nuclear Regulatory Commission Document Control Desk WashJngton, DC 20555 DOCKET 50-155 - LICENSE DPR BIG ROCK POINT PLANT -

EQUIPMENT ENVIRONMENTAL QUALIFICATION TEMPERATURE PROFILE Consumers Power Company _ letter dated April 23, 1987 on status of resolution of EEQ inspection findings contained a copy of our EEQ containment temperature qualification envelope as figure 1 in Attachment 3. During subsequent review of this figure, a drafting error was discovered. Pcints eleven (11)4and twelve (12) are plotted' incorrectly . Pointg1shouldbeat8.6x10 seconds and 115*F and point 12 should be at4 2.6 x 10 seconds and 115'F. Point 11 was incorrectly plotted at 9.6 g 10 seconds and 115'F and point 12 was incorrectly plotted at 2.6 x 10 seconds and 115'F. The resultant slight change in slope has no impact on the environmental qualification of our electrical equipment. Attachment I contains a corrected containment tempera-ture qualification envelope. We apologize for any inconveniences this error may have caused.

G. N Ralph R Erisch Senior Licensing Analyst CC Administrator, Region III, NRC NRC Resident Inspector - Big Rock Point Plant Attachment 8705210577 870515 PDR ADOCK 05000155 PDR G

.J587-0066-NLO2 g oft

O ATTACHMENT Consumers Power Company Big Rock Point Plant Docket 50-155 CONTAINMENT TEMPERATURE QUALIFICATION ENVELOPE May 15, 1987 1 Page ATT0587-0066-NLO2

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