ML19319C990

Deficiency Rept Re Hydraulic Snubber Sightgage Leakage. Caused by Improper O-ring or Seal Matl in Sightgage & Poor Workmanship at Reservoir Connection.Sightgage Replacement or Deletion W/Dipstick Being Considered

ML19319C990
Person / Time
Site:	Crystal River
Issue date:	06/21/1976
From:	Rodgers J FLORIDA POWER CORP.
To:
Shared Package
ML19319C975	List: ML19319C982 ML19319C986 ML19319C990 ML19319C993 ML19319D006
References
NUDOCS 8003040920
Download: ML19319C990 (1)

Text

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'1 RIZ COPY Florida

.P..o..w..e r.

June 21,'19 76 Mr. Donald F. Knuth, Director Directorate of Regulatory Operations

~ U. S. Nuclear Regulatory Commission Washington, D. C. 20545

Subject:

50-302 Crystal River Unit 83

Dear Mr. Knuth:

In accordance with 10CFR50.55(e), .we wish to advise y'oti that the possible deficiency reported verbally to you on May 4, 1976, is now considered as being verified as  ;

a reportable deficiency.

Numerous Power Piping Company hydraulic snubbers have been identified as having fluid leaks in the area of the sightgage. So far the leaks have been at one or more of the following locations :

1. 0-ring at the sightgage to reservoir fluid connections

2. Seal at sightgage gla s to sightgage housing fluid connections

3. Threaded connections at sightgage glass to sightgage housing fluid connections Reason for leakage is considered to be one or more of the following:

1. Improper 0-ring or seal material in the Jightgage

2. Overcompression of the 0-ring or seal

3. Poor workmanship at reservoir connection All P.P.C. snubbers are suspect. h' hen the cause is determines and a suitable repair established it will be applied to all P.P.C. snubbe rs. Possible fixes are:

1. Replace ent of sightgage

2. Deletion of sightgage, using a dipstick

3. Other Very truly yours, cc: N. C. Moseley'ki m m e d

• M u/

cc: M. ii. Kleinman J. T. Rodge s JTR/nm Assistant Vice President 8003Ong?go