05000409/LER-1981-011, Forwards LER 81-011/03L-0.Detailed Event Analysis Submitted

Forwards LER 81-011/03L-0.Detailed Event Analysis Submitted

ML20038C241
Person / Time
Site:	La Crosse File:Dairyland Power Cooperative icon.png
Issue date:	11/20/1981
From:	Linder F DAIRYLAND POWER COOPERATIVE
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20038C242	List: 05000409/LER-1981-011, Forwards LER 81-011/03L-0.Detailed Event Analysis Submitted 05000409/LER-1981-011-03, /03L-0:on 811031,observed That Radiation Hose on High Pressure Svc Water Diesel Engine 1B Was Slightly Cracked.Cause Not Stated.Hose Replaced & Diesel 1B Tested Satisfactorily
References
LAC-7932, NUDOCS 8112100307
Download: ML20038C241 (2)

LER-1981-011, Forwards LER 81-011/03L-0.Detailed Event Analysis Submitted

Event date:
Report date:
4091981011R00 - NRC Website

text

__

D DA/RYLAND h

[k COOPERAT/VE

• PO BOX 817 2615 EAST AV SOUTH

• LA CROSSE. WISCONSIN 54601 (608) 788-4000 November 20,-1981.

In reply, please refer to LAC-7932 DOCKET NO. 50-409 f

[V d !N n7 q f h,T/

h Mr. James G.

Keppler, Regional Director U.

S. Nuclear Regulatory Commission w

i Directorate of Regulatory Operations

/E7 Sk JU Lj)

Q' Region III J_'

DEC9 1981 5 ~

l 799 Roosevelt Road.

,y Glen Ellyn, Illinois 60137 T

""foT j$^*8 ;h/

G N/

SUBJECT:

DAIRYLAND POWER COOPERATIVE

\\Q (LACBW{3t) g. [

LA CROSSE BOILING WATER REACTOR DPR-4 PROVISIONAL OPERATING LICENSE NO.

l REPORTABLE OCCURRENCE NO. 81-11

REFERENCES:

(1)

LACBWR Technical Specifications, Section 6.9.1.9.b t

(2)

LACBWR Technical Specifications, Section 4.2.2.18 (3)

LACBWR Technical Specifications, Section 4.2.18.1 i

Dear-Mr. Keppler:

In accordance with Reference 1, this is to notify you of a plant condition which led to operation in a degraded mode permitted by a limiting condition for operation.

At 1400 on October 31, 1981 with the reactor in Operating Condition 1 at 85% Rated Thermal Power, the LACBWR Mechanical Engineer, who was the Duty Shift Technical Advisor, observed that the radiator hose on the IB HPSW (High Pressure Service Water) Diesel Engine was slightly cracked during a random tour of the plant.

In his opinion, the magnitude of the crack was such that the hose would have ruptured after a couple hours of diesel operation.

The IB HPSW Pump Control Switch in the Control Room was placed in i

the "OFF" position for approximately 10 minutes while the radiator hose was. replaced.

The diesel was then test run for three minutes to check for hose leakage and water level in the radiator.

After i

a satisfactory inspection, the control switch was returned to the

" AUTO" mode.

j

_1_

gMf8l DEN 2 198l' 8112100307 811120 PDR ADOCK 05000409 7 31.

S PDR

~

MMY

Mr. James G.

Keppler, Regional Director November 20, 1981 U.

S. Nuclear Regulatory Commission LAC-7932 On November 3, 1981, the hoses on both the 1A and 1B HPSW Diesels were inspected and one hose which showed signs of aging was replaced on the 1A HPSW Diesel.

A specific visual inspection of the condition of all hoses has been incorporated into the monthly Preventive Maintenance Program.

A Licensee Event Report (Reference: Appendix A, Regulatory Guide 1.16, Revision 4) is enclosed.

Should you have any questions regarding this submittal, please contact us.

Very truly yours, DAIRYLAND POWER COOPERATIVE

.IA Frank Linder, General Manager c

FL:LSG:eme Attachment cc:

Director, Office of Inspection and Enforcement (30)

U.

S. Nuclear Regulatory Commission Washington, D.

C.

20555 Director, Office of Management Information (3) and Program Control U.

S. Nuclear Regulatory Commission Washington, D.

C.

20555 NRC Resident Inspector _ _ - _ _ _ _ _ _ _ _ _ _ _ - _ _ _ _ _