Hope Creek's Junk SRV's Pressure setpoint Inaccuracies

Hope Creeks Junk SRVs: Addicted to Normalization of Deviance

Update 1/16 

This excerpt is from a recent letter to me by the NRC's Mr Bower concerning Hope Creek. Is he trying to minimized the extent of the problems with Hope Creeks SRV problems or scrupulously telling us the complete story. Anyone nuclear whether nuclear employees or the NRC should be "sticklers for the details". Why was Mr Bowers Chief, Projects Branch 3, so inaccurate to me? I bet you he went to a spectacular college? Hope Creek over the years have habitually violated their "mechanical stresses on the torus and torus attached piping" (MAPI value). 

NRC official Mr. Bower: "In addition, the increase in mechanical stresses on the torus and torus attached piping due to the higher lift setpoints remained within code acceptable limits."

For some some reason Hope Creek only put a few years worth of "mechanical stresses on the torus and torus attached piping" limits in their LERS. So the red highlighted data below is the times Hope Creek's violated or challenged the "MAPI values"(mechanical stresses on the torus and torus attached piping). Does not disclosing the MAPA values constitutes a cover-up.  

First posting below

**So the last three setpoint inaccuracies LERs had 21 failures. Supposedly they tested 42 valves (3X14). It could be less as they don't often test all fourteen SRVs per outage or report. Get it, 50% failure rate over maybe six years. The tolerable legal failure is 3 over six years. This was all under the plus or minus 3% regime. What failure rate would it be at plus or minus 1%?    

LER 0000-003

*F 3.1% Ion-implanted disc
K 7.8% Disc not implanted

LER 2001-007-00

(psig) (psig) (psig)
F013P 1216 1120 1087 -1153 8.6
F013H 1169 1108 1075 - 1141 5.5
F013D 1182 1130 1096 - 1163 4.6

LER 2003-003-00

(Again erratic testing documentation. There is no more "notes" on seat leakage?) 

(psig) (psig) (psig)
*F013A* 1190 1130 1096 -1163 +5.3 

F013D** 1196 1130 1096 -1163 +5.8
F013E** 1187 1130 1096 -1163 +5
*F013G** 1204 1120 1086 -1154 +7.5 

F013J** 1165 1120 1086 -1154 +4
F013K** 1142 1108 1075 -1141 +3.1
F013L** 1191 1120 1086 -1154 +6.3
F013M* 1150 1108 1075 -1141 +3.8 

* These valves failed due to seat leakage
** These valves failed due to corrosion bonding/sticking of the pilot disc

LER 2004-009-00

(psig) (psig) (psig)
*F013A 1192 1130 1096 -1163 5.5% 

F013B 1171 1130 1096 -1163 3.6%
F013C 1207 1130 1096-1163 6.8%
F013D 1184 1130 1096 -1163 4.8%
*F013F 1156 1108 1075-1141 4.3%

LER 2006-03-00

(psig) (psig) (psig) 

*F013A 1166 1130 1096-1163 3.2%  

F013C 1166 1130 1096-1163 3.2% 

F013K 1144 1108 1075-1141 3.2% 

***This LER below is when they began publishing a value(MAPI value) on the SRV piping stresses (LIMIT). The accident is SRV pipe break between the vessel and torus. It is a very dangerous kind or LOCA or pipe break. They could very quickly heat up primarily containment threating electrical cables and vessel level instrumentations.
Licensee Event Report 2009-002-01

(psig) (psig) (psig) Actual Limit* 

*F013A 1195 1130 1096-1163 5.80% 3.00%  

F013C 1203 1130 1096-1163 6.50% 21.80% 

*F013F 1163 1108 1075-1141 5.00% 5.50%  

F013G 1156 1120 1087-1153 3.20% 8.70% 

F013K 1212 1108 1075-1141 9.40% 22.40% 

F013L 1170 1120 1087-1153 4.50% 16.30%

Licensee Event Report 2010-002-01

(psig) (psig) (psig) Actual Limit' 

*F013A 1177 1130 1096-1163 4.20% 3.00% 

F013C 1186 1130 1096-1163 5.00% 21.80% 

*F013G 1199 1120 1087-1153 7.10% 8.70%  

F013K 1172 1108 1075-1141 5.80% 22.40 

%F013L 1192 1120 1087-1153 6.40% 16.30%F013P 1157 1120 1087-1153 3.30% 27.4%

Licensee Event Report 2012-004-01

(psig) (psig) (psig) Actual Limit  

F013B 1169 1130 1096-1163 3.50% 39.4% 

*F013F 1193 1108 1075-1141 7.70% 5.5%  

F013H 1157 1108 1075-1141 4.40% 37.7% 

F013K 1202 1108 1075-1141 8.50% 22.40%

F013L 1193 1120 1087-1153 6.50% 16.30% 

F013P 1185 1120 1087 -1153 5.80% 27.4% 

(They are really erratic documenting this testing. So now this MAPI value is discontinued(LIMIT))without explanation 

Licensee Event Report 2013-007-00

So the established MAPI value limit on F013A is 3.0% on 2009-002-01 and 2010-002-01 on this LER ,but has no explanation. 

(psig) (psig) (psig) Actual

*** F013A 1170 1130 1096-1163 3.5%  

F013D 1192 1130 1096-1163 5.5% 

F013F 1178 1108 1075-1141 6.3% 

F013K 1149 1108 1075-1141 3.7% 

F013L 1175 1120 1087-1153 4.9%

 Licensee Event Report 2015-004-01

The established "MAPI value" on FO13F in is past LERs (LER 2009-002-01) is 5.0% and in this LER they are in violation on F013F with  setpoint accuracy  of 11.90%. So they are in violation in this LER on setpoint accuracy and SRV piping stress values on F013F. 

(psig) (psig) (psig) Actual 

F013C 1216 1130 1096.1 -1163.9 7.61% 

***F013F 1240 1108 1074.8 -1141.2 11.90% 

*F013G 1208 1120 1086.4 - 1153.6 7.86%F013H 1148 1108 1074.8-1141.2 3.60%
F013J 1161 1120 1086.4 -1153.6 3.66%
F013K 1161 1108 107 4.8 -1141.2 4.80%
F013 L 1165 1120 1086.4 -1153.6 4.00%
F013 M 1207 1108 1074.8 -1141.2 8.90%
F013P 1221 1120 1086.4 -1153.6 9.00%
F013R 1169 1120 1086.4 -1153.6 4.38%