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Phil Denny informed me that there was a report of Test Lab LCW flow lower than normal. Supply pressure was confirmed significantly lower than normal (95 versus 130 PSIG). I checked the basement pump and piping. The bypass valve around the pressure control
valve was cracked a little which resulted in an increase of about 15 PSIG when closed or supply pressure of 110 PSIG. I then determine a little flow is leaking pass the control valve which if corrected could increase supply pressure about 4 PSIG, I will
have troubleshot by our controls subcontractor. The 4 PSIG will not restore the system to normal operating supply pressure so I continued looking at the system and valve configuration in the highbay area. I found the bypass between supply and return piping
south of the klystron racks on the mezzanine is fully open. I believe if the bypass valve is closed, system pressure will return to normal. I left the valve open in case it was opened for a reason that I am unaware. Recommend this valve be closed by user
supporting the klystron racks and system supply pressure checked.</div>
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For additional information or clarification, please contact me at 757-876-1778.</div>
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Sincerely,</div>
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Carroll W. Jones </div>
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