05000331/FIN-2018003-02
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Finding | |
|---|---|
| Title | Minor Violation |
| Description | During Mode 1 power operations on July 9, 2018, the licensee had both doors of a secondary containment airlock open simultaneously, and a minor violation of Technical Specification (TS) 3.6.4.1 Secondary Containment was self-revealed. During the time both doors were open, approximately 3 seconds, the allowable penetration opening area was exceeded and rendered the secondary containment inoperable. Technical Specification 3.6.4.1 requires secondary containment to be operable in Modes 1, 2 and 3. Technical Specification Surveillance Requirement 3.6.4.1.2 supports secondary containment operability by verifying that either the outer door(s) or the inner door(s) in each secondary containment access opening are closed. The posted instructions at each secondary containment airlock door stated, ATTENTION Push Button To Be Held In For 2 Seconds Prior To Opening Door, to be of a type appropriate for traversing the containment airlock. Contrary to the above, at approximately 1:34 p.m. on July 9, 2018, while operating in Mode 1 at 97 percent power, two individuals simultaneously traversing through opposite doors of a secondary containment airlock each failed to hold the airlock interlock push button for two seconds prior to opening their respective doors resulting in a momentarily inoperability of secondary containment. Operability was restored upon the immediate closure of one of the two doors. Subsequently, maintenance was unable to recreate the condition and satisfactorily performed Surveillance Test Procedure (STP) 3.6.4.102, Secondary Containment Airlock Verification, and GMPELEC44,Section A5.1,Airlock Door Interlock Checks.The licensee entered this |
| Site: | Duane Arnold  |
|---|---|
| Report | IR 05000331/2018003 Section 4OA3 |
| Date counted | Sep 30, 2018 (2018Q3) |
| Type: | Violation: Severity level Minor |
| cornerstone | No Cornerstone |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71153 |
| Inspectors (proximate) | C Norton J Beavers V Myers M Holmberg K Stoedter |
| Violation of: | Technical Specification |
| INPO aspect | |
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Finding - Duane Arnold - IR 05000331/2018003 | ||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Duane Arnold) @ 2018Q3
Self-Identified List (Duane Arnold)
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