View source for 05000302/LER-1980-036-03, /03L-1:on 800827,DHV-111 Decay Heat Pump B Discharge Throttle Valve Would Not Flow in Automatic During Operability of Boron Injection Sources & Pumps Test SP-320. Caused by Air in Sensing Line.Sensing Line Vented & Checked

{{Adams
| number = ML19347D419
| issue date = 03/10/1981
| title = /03L-1:on 800827,DHV-111 Decay Heat Pump B Discharge Throttle Valve Would Not Flow in Automatic During Operability of Boron Injection Sources & Pumps Test SP-320. Caused by Air in Sensing Line.Sensing Line Vented & Checked
| author name = Hernandez V
| author affiliation = FLORIDA POWER CORP.
| addressee name = 
| addressee affiliation = NRC OFFICE OF INSPECTION &amp; ENFORCEMENT (IE REGION II)
| docket = 05000302
| license number = 
| contact person = 
| document report number = LER-80-036-03L, LER-80-36-3L, NUDOCS 8103170576
| package number = ML19347D416
| document type = LICENSEE EVENT REPORT (SEE ALSO AO RO), TEXT-SAFETY REPORT
| page count = 2
}}
{{LER
| Title = /03L-1:on 800827,DHV-111 Decay Heat Pump B Discharge Throttle Valve Would Not Flow in Automatic During Operability of Boron Injection Sources & Pumps Test SP-320. Caused by Air in Sensing Line.Sensing Line Vented & Checked
| Plant = 
| Reporting criterion = 
| Power level = 
| Mode = 
| Docket = 05000302
| LER year = 1980
| LER number = 36
| LER revision = 3
| Event date = 
| Report date = 
| ENS = 
| abstract = 
}}

=text=
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,,,,,,This created an event contrary to Tech Spec 3.5.2.
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,,,,,i control; Decay Heat Loop "A" provided redundancy. There was no effect upon the e a.., I general public health or safety. This is the first event of this type, and the
,,,,,, tenth report under this Specification, io..! i sting C E E
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SUPOLEMENTARY INFORMATION Report No.:
50-302/80-036/03L-1 Facility:
Crystal River Unit 3 Report Date:
March 10, 1981 Occurrence Date:
27 August 1980 Identification of Occurrence:
Failure to aave two (2) independent ECCS subsystems cperable contrary to Technical Specification 3.5.2.
Conditions Prior to Occurrence:
Mode 1 power operation (80%).
Description of Occurrence:
At 0300 during performance of SP-320, Operability of Boron Injection Sources and Pumps, it was discovered that DHV-lll "B" Decay Heat Pump Discharge Throttle Valve would not con-trol flow in automatic. DHV-lli did respond in manual control; maintenance actions were initiated.
Designation of Apparent Cause:
The cause is attributed to air in the sensing lines.
Analysis of Occurrence:
There was no effect upon the general public health and safety.
Redundancy was maintained by the "A" Decay Heat Loop.

==Corrective Action==
The sensing lines were vented and a functional check was com-pleted. The line was vented prior to surveillance checks for three months; it will be vented monthly until a permanent corrective action is implemented. An engineering evalcation of the control system for DHV-lli and DHV-110 is currently in prog ress.
(Reference REI 80-9-3). This revision corrects cause and corrective action of Revision 0.
Failure Data:
This is the first occurrence for DHV-lll, and the tenth report made under this Specification.
/rc
}}

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