ML20064B832

Forwards Info Re balance-of-plant & Tests of Raychem Thermofit Insulation Sys Under Simultaneous Exposure to Heat,Gamma,Radiat,Steam & Chemical Spray While Electrically Energized

ML20064B832
Person / Time
Site:	McGuire, Mcguire
Issue date:	10/05/1978
From:	Parker W DUKE POWER CO.
To:	Harold Denton Office of Nuclear Reactor Regulation
Shared Package
ML20064B837	List: ML20064B832 ML20064B840
References
NUDOCS 7810110145
Download: ML20064B832 (3)

Text

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, - i DUKE PowEn COMPANY Powra Dest.Dtwo 4c2 Socin CHuacu Sinrzi, Cauntortz, N. C. as242 w m = o. a4= c a. s a. October 5, 1978

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373-4083 Mr. Harold R. Denton, Director Office of Nuclear Reactor M gslation U. S. Nuclear Regulatory Comr:.ssion Washington, D. C. 20555 Attention: Mr. Robert L. Baer, Chief LWR Projects Branch No. 2 I '"Se': McGuire Nuclear Station Units 1 and 2 .. .

Docket Nos. 50-369 and 50-370  ;

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Dear Mr. Denton:

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In the McGuire Safety Evaluation Report, NUREG 0422, one of the remaining out-standing items is the qualification of balance-of-plant and Westinghouse sup-plied Class 1E equipment. .

With regard to the balance-of-plant items, please find attached information con-cerning the method of termination and the environmental qualification of termi-nations associated with safety-related equipment located inside containment.

Documentation to demonstrate qualification of Limitorque valve operator termi-

.c.ttons and limit switch terminations is expected to be available January, 1979 and February, 1979, respectively. This documentation will be provided as it be-comes available.

With regard to qualification of Westinghouse supplied Class 1E equipment, the outstanding concern is verification testing of the production run safety-related transmitters to be used inside containment at McGuire. The qualification doc-umentation for the transmitters was submitted to NRC by Westinghouse letter NS-TMA-1950 dated September 29, 1978 from T. M. Anderson to John F. Stolz.

Very truly yours, 7 s w -

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W William O. Parker, Jr.

GAC:ses LPort. Attachments 1 POR. & Doc x. ps'n - yg y g 7tto 101vr p g g n ex. ys ,. y7 , 4 1 y y",f,\es 7,8 Mi lin

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DUKE POWER COMPANY McGUIRE NUCLEAR STATION Environmental qualification of Safety-Related Terminations Located inside Containment The following Information describes the method of termination and the qualifi--

cation of the termination used with each type of safety-related equipment located inside contalnnent.

Electric Penet rations ,

Cables are terminated to safety-related electric penetrations by use of quallfled connectors inside junction boxes. The connectors were tested as part of the pene t rat i on. Qualification documentat' ion for these penetration connectors has previously been submitted to the Staff for review. .

Transmitters and RTD's b Transmitters and RTD's will be' terminated by use of a splice consisting of either a bolted or crimped splice sealed over using Raychem Thermofit' shrinkable tubing (Type WCSF-N) . Qualification of this splicing method and material for use inside containment is covered in Attachment 1.

l Hydroaen Skimmer Fan Motors / Containment Air Return Fan Motors Hydrogen SkinnerF' an Motors and Containment Air Return Fan Motors will be terminated by use of a bolted spilce sealed over using Raychem Thermofit shrinkable tubing (Type WCSF-N) . Qualification of this splicing method -

and material for use inside containment i s covered in Attachment 1.

Solenoid Operated Valves

Solenoid operated valves will be terminated by use of a splice sealed over

(' using Raychem Thermofit shrinkable tubing (Type WCSF-N) . Qualification of this splicing method and mate ial for use inside containment is covered in

Attachment 1.

i limit Switches Conductors will be terminated within the limit switch assembly. Cable entrance into the limit switch assembly will be sealed using a potting compound. Quall-

fication data for the cable entrance seal will be available in February 1979.

' Motor Operated Valve Actuators (Rotork and Limitorcue)

Rotork valve actuator terminations are made on a terminal plate inside the operator housing. Qualification of this termination method is included in the Rotork qualification data previously submitted to the Staff in response to question 223.31 and is supplemented by Attachment 2.

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,- , t Limitorque valve operator terminations consist of terminal connections for indication circuits and splices for the power connections. The terminal connections were qualified with the operator. Qualification documentation .

for the terminal connections is expected to be available in January 1979.

The spliced power connections will be sealed over with Raychem Thermof 3t shr{nkable tubing (Type WCSF-N), Qualification of the spilcIng method and material for use inside containment is covered in Attachment I, r

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