05000255/LER-1978-035-03, /03L-0 on 781020:channel D Pressure Instru pt-0102D Found to Be Out of Calibr.Caused by Zero Shift. Calibr Frequency Changed from Annually to semi-annually

/03L-0 on 781020:channel D Pressure Instru pt-0102D Found to Be Out of Calibr.Caused by Zero Shift. Calibr Frequency Changed from Annually to semi-annually

ML18043A277
Person / Time
Site:	Palisades
Issue date:	11/16/1978
From:	CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:
Shared Package
ML18043A276	List: 05000255/LER-1978-035, Forwards LER 78-035/03L-0 & 78-036/03L-0 05000255/LER-1978-035-03, /03L-0 on 781020:channel D Pressure Instru pt-0102D Found to Be Out of Calibr.Caused by Zero Shift. Calibr Frequency Changed from Annually to semi-annually
References
LER-78-035-03L, LER-78-35-3L, NUDOCS 7811210335
Download: ML18043A277 (2)

LER-1978-035, /03L-0 on 781020:channel D Pressure Instru pt-0102D Found to Be Out of Calibr.Caused by Zero Shift. Calibr Frequency Changed from Annually to semi-annually

Event date:
Report date:
2551978035R03 - NRC Website

text

PALISADES NRCFORM366 17-771 U.S. NUCLEAR REGULATORY COMMISSION LICENSEE EVENT REPORT CONTROL BLOCK: I I CD 1

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60 SI DOCKET NUMBER 68 69 EVENT DA.TE 74 75 REPORT DA.TE 80 EVENT DESCRIPTION ANO PROBABLE CONSEQUENCES{,())

(]J!] I During routine suz:veillance of'~CS pressure channels, the channel D pressye

((IlJ I instrument (PT-0102D') was found to be out of calibration such that the

((IIJ I RPS channel D-thermal margin/low pressure trip would have occurred at l))]J I 1745 psia instead of at a minimum of' 1750 psia as required by TS Table

[]JD I 2. 3.1.

Remaining three channels had satis.factory trip setpoints.

Event

[§Jil 1 had no adverse e.ff'ect on public health or saf'ety.

• Instrument was ad.jus-

((I!] I ted to bring it to within specifications.

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SYSTEM

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44 47 III)) I Out of' calibration condition caused by zero shift.

The u.."li ts (Foxboro III!] 1 model 511GM) are very temperature sensitive.

An increase in ambient 1IIiJ \\ temp of 15 deg F since the previous cali bra ti on appears to have been III!JI

._ _s_u_f'_f_i_c_i_e_n_t_... _..,o_h_a_v_e_c_a_u.s_e_d_t_h_e_o_b_s_e_r_v_e_d_dr i_.ft_. __

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60 61 DOCKET NUMBER 68 69 EVENT DATE 7'

7S REPORT DATE 80 EVENT DESCRIPTION AND PROBABl.E CONSEQUENCES i'1o'l

[)))) I During monthly suryeilla.nce o:f 'rtre hose stations, hose station No. 26

[]I[)

was found to have a SO-foot hose instead of the required 75 :foot hose.

((Jr]

Refer to TS 3.22.4.1.B.

A 25 foot hose was immediately added to the hose

(())) I station. Because another hose station in the same area contained a 75

[]J]J I foot hose, fire fighting capabilities in this area (viewing gallery)

[))Il 1 were not impaired.

No hazard to public health or safety existed.

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CAUSE

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CII!J I The hose normally stored in the cabinet had apparently been replaced.

CTI!] I with a shorter hose.

The tyo hose segments (50 foot nlus 25 foot) will [J]JJ be replaced with a single 75 foot hose..

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