Event Notification Report for November 30, 2018

PART-21 - EMERGENCY DIESEL GENERATOR EMD FUEL AND SOAKBACK PUMPS LOOSE BOLTS

The following report was received via fax:

"ESI [Engine Systems, Inc.] was notified by a nuclear customer of two instances where a bolt was found loose or backed out of the cover of an EMD [Electro-Motive Diesel] engine driven fuel pump P/N 8410219. Following notification, ESI inspected remaining pumps in inventory and found instances where one or more of the pump cover bolts were loose or lightly torqued.

"EMD fuel pump, P/N 8410219, is commonly used on all 12, 16, and 20-cylinder EMD model 645E4 and E4B engines. The pump is either mechanically driven from the engine (via the scavenging tube oil pump) or motor driven (as in the case of a backup/redundant fuel pump). The pump transfers fuel oil from the day tank to the fuel injectors to support fuel combustion. Without the supply of fuel oil, the diesel engine is unable to produce power which adversely affects the safety-related operation of the emergency diesel generator set.

"ESI recommends inspecting the bolts of all pumps for proper bolt tightness. Use a torque wrench and ensure all bolts are tightened to 108 to 120 in-lbs (12 to 13 Nm).

"This activity should be performed at the earliest opportunity; however, it is more important for the inspection to be performed on newly installed pumps. It is expected that for pumps supplied with low bolt torque, if a problem were to develop it would be in the form of a fuel leak soon after installation. For pumps that have been successfully installed for several months or years with no detectable leakage, it is less likely that bolt(s) are loose and therefore the urgency of this inspection is reduced."

Points of Contact: (252) 977-2720
Dan Roberts, Quality Manager
John Kriesel, Engineering Manager

Affected Plants:
Region 1: Nine Mile Point, Fitzpatrick
Region 2: Brown's Ferry, Savannah River, Oconee, St Lucie, Surry Power Station, Turkey Point, Watts Bar
Region 3: La Salle, Point Beach, Dresden, Clinton
Region 4: Grand Gulf, River Bend, Energy Northwest,, Entergy Operations Inc - Arkansas, Omaha Public Power - Fort Calhoun

* * * UPDATE FROM DAN ROBERTS TO JEFFREY WHITED AT 1202 EST ON 12/21/18 * * *

The following was received via fax:

Revision 1 involves updates on page 2 of the 10 CFR Part 21 Report which include:

"In item (iv), added reference to F4B engine application.

Revised Item (vii):

"For all affected customers:
"ESI recommends inspecting the bolt tightness for all pumps. The recommended bolt torque is 108 to 120 in-lbs (12 to 13 Nm). After verifying bolt torque, a shaft freeness check is recommended. The pump shaft should be capable of being rotated by hand in either direction. Due to the small shaft size, this check is commonly performed with a small crescent wrench or with the coupling half installed on the shaft. Inability to rotate by hand indicates loss of end clearance and the pump should be returned to ESI for rework or replacement.

"Note: For installed pumps where it is not possible to check shaft freeness, ESI recommends using a reduced bolt torque of 60 to 70 in-lbs (7 to 8 Nm). This is sufficient to ensure the bolts are snug while safeguarding against loss of end clearance that would otherwise go undetected.

"This activity should be performed at the earliest opportunity; however, it is more important for the inspection to be performed on newly installed pumps. It is expected that for pumps supplied with low bolt torque, if a problem were to develop it would be in the form of a fuel leak soon after installation. For pumps that have been successfully installed for several months or years with no detectable leakage, it is less likely that bolt(s) are loose and therefore the urgency of this inspection is reduced.

"For ESI: The dedication procedures for these pumps have been revised or are being revised to add a step to verify proper bolt torque. This will be completed prior to any future shipments. In addition, ESI is in correspondence with the pump manufacturer to implement corrective actions to prevent reoccurrence."

Notified R1DO (Jackson), R2DO (Bonser), R3DO (Stone), R4DO (Alexander), and Part 21/50.55 Reactors (e-mail).

AGREEMENT STATE REPORT - INABILITY TO RETRACT RADIOGRAPHY SOURCE

The following report was received from the Commonwealth of Pennsylvania via fax:

"The licensee reported that on November 30, 2018, while using a Sentinel Model 880 Delta, Serial Number D-11934, containing a 39.2 Curie source of iridium-192, the guide tube had come unbound from the strapping used to hold the collimator and guide tube to the weld being inspected and fell approximately the full length of the guide tube. This left the guide tube hanging at a 90-degree angle from the exposure camera which proved too great to let the source be retracted into a shielded position inside the exposure device and left the source inside the collimator.

"The technicians secured the area by adjusting their 2 mR/hr boundaries to an unshielded source distance and immediately contacted their Operations Manager. Once on scene, the Operations Manager utilized various tools to straighten the guide tube enough for the source to be fully retracted into a shielded position.

"The device was taken back to the licensee's storage vault in Sugar Grove, PA for inspection and possible repair or disposal by the manufacturer. Direct read dosimetry showed exposures of 18 mR for the Operations Manager, 18 mR for the radiographer and 5 mR for the radiography assistant, thus no overexposures have occurred because of this event. Corrective actions include retraining on suspended exposure procedures and future discussion of this event at monthly staff meetings. The Department will perform a reactive inspection. More information will be provided upon receipt."

Pennsylvania Report ID: PA190001

OFFSITE NOTIFICATION DUE TO CONTRACTOR FATALITY

"At 2300 EST on November 29, 2018 Catawba Nuclear Station (CNS) requested offsite transport for treatment of a contractor to an offsite medical facility. Upon arrival of the offsite medical personnel, the individual was declared deceased at 2354 EST on November 29, 2018.

"The fatality was not work-related and the individual was outside of the Radiological Controlled Area.

"No news release by CNS is planned. Notifications are planned to the South Carolina Division of Occupational Safety and Health.

"This is a four hour notification, non-emergency for a notification of other government agency. This event is reportable in accordance with 10 CFR 50.72(b)(2)(xi). The NRC Resident Inspector has been notified."

LOST TRITIUM EXIT SIGNS

The following is a summary of a phone call with the licensee:

After performing an inventory of Tritium exit signs in April of this year, a Senior Health Physicist inquired about the location of two specific missing signs. The Senior Health Physicist found that the building had been under renovation in 2018 and a contractor likely removed the two exit signs in November, 2018. The licensee is currently waiting on information from the contractor regarding the exit signs.

The licensee will be notifying NRC Region III.

THIS MATERIAL EVENT CONTAINS A "LESS THAN CAT 3" LEVEL OF RADIOACTIVE MATERIAL

Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf