ML18352A344

Licensee Event Report ER-76-0102, for Long-Term Cooling Qualification, Two Valves, CV-2113 & CV-2115, Associated with Charging System, May Not Meet Code Requirement

ML18352A344
Person / Time
Site:	Palisades
Issue date:	05/14/1976
From:	Bixel D Consumers Power Co
To:	James Keppler NRC/RGN-III
References
LER 1976-012-00
Download: ML18352A344 (2)

Text

consumers

• Power company General Offices: 212 West Michigan Avenue, Jackson, Michigan 49201

• Area Code 517 788-0550 May 14, 1976 Mr James G. Keppler Office of Inspection Enforcement Region III US Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 DOCKET 50-255, LICENSE DPR PALIS.ADE PL.ANT, ER-76-12 CHARGING SYSTEM VALVES

• Attached is a reportable occurrence which relates to the Palisades Plant.

This occurrence has been classified as a prompt reportable occurrence. It should be further noted that the event date (April 30, 1976) is the date when it was determined that this occurrence was reportable.

David A. Bixel Assistant Nuclear Licensing Administrator i I

e LICENSEE EVENT REPORT -

CONTROL BLOCK: .... I __.___.l,__..__....I___.~I [PLEASE PRINT ALL REQUIRED INFORMATION]

1 6 LICENSE EVENT LICENSE NUMBER TYPE TYPE I ol o 1-1 o I ol o Io I o 1-1 ol o I I 411 I 1 I i I ii Io I1 I 15 25 26 30 31 32 REPORT REPORT TYPE. SOURCE OOCKl;T NUMBER EVENT DATE REPORT DATE

@ill .coN'T ._I_..__,I L!J L!J Io I 5 I o 1-1 o I 21 5 I 5 I lol4l3lol1L6I 1ol51114hl61 75 . 80 7 B 57 58 59 60 61 68 69 74 EVENT DESCRIPTION lo~I I During a review of equipment associated with long-term cooling qualification, we I 7 8 9 80 Iola! I have determined that two valves (CV-2113 and CV-2115 associated with charging I 7 8 9 80 lol4l I system) may not meet code requirements (original design specifications) as they I 7 8 9 . 80 lol5l *1 relate to allowable stresses at the valve body to bonnet flange. (ER-76-12) I 7 8 9 80 (0161 7 8 9 PANE 80 SYSTEM CAUSE COMPONENT COMPONENT CODE CODE COMPONENT CODE SUPPLIER MANUFAC'TIJRER VIOLATION 7

@El I RIB I 8 9 10 lliJ 11 Iv I A 12 I LI vi El xI 17 LAJ 43 I1 12 44 Io I aI 47 LU 48 CAUSE DESCRIPTION lal0I I When these valves were designed, standard methods of calculating these. stresses did I 7 8 9 . 80 lolsl I not exist. Calculations using currently ac*cepted methods show the stresses to I

~

~9 j be below yield but above code allowable. The valve is a 2 11 globe, air operated, 8

00 1

FACILITY METHOD OF STATUS  % POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION EEi8 W lololol I NA I W NA 7 9 10 12 13 44 45 46 80 FOAM OF ACTIVITY RELEASED CONTENT OF RELEASE AMOUNT OF ACTIVITY I LOCATION OF RELEASE lIEJ L!J ~ I....._ _ _N_A_ ____,_ NA 7 B 9 10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION

[IE] I ol o I oI W . NA 7 8 9 11 12 13 80 PERS.ONNEL INJURIES NUMBER DESCRIPTION EEi I al oIo11I 7 8 9 12 NA 80

. PROBABLE CONSEQUENCES EJfil I None, valve stresses are conservatively calculated to be below yield.

7 8 9 80 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION

[2]} Ui 10 NA 7 8 9 80 PUBLICITY

[ilil 7 8 9 80

- ADDITIONAL FACTORS

~ I (Cause Description Contd) A351 CF8M*SS, 1500 lb class. Valve bonnet replacement 7 B 9 80

[!1fil I will resolve problem and will be completed during or before next refueling outage 7 8 9 80 (summer of 1977) *