ML20053D641
| ML20053D641 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 05/19/1982 |
| From: | NRC |
| To: | |
| Shared Package | |
| ML20053D642 | List: |
| References | |
| NUDOCS 8206070156 | |
| Download: ML20053D641 (2) | |
Text
. _ _ - - _.
QlJAD CITIES DP R-29 Snubber service life monitoring shall be followed by the snubber surveillance inspection records and maintenance history records. The above record retention method shall be used to prevent the snubbers from exceeding a service life.
2.
Visual inspections shall verify:
a.
There are no visible indications of damange or impaired operability, and b.
Attachments to the foundation or supporting structure are secure.
.c.
For hydraulic snubbers, the hydraulic fluid reservoir and fluid connections shall be inspected for operability.
3 Once each refueling cycle a represen-tative sample of 10% of the total of each type of snubber in use in the plant shall be functionally tested either in place or in a bench test.
For each snubber that does not meet the functional test criteria, an additional 10% of that type of snubber shall be functionally tested.
4.
The. hydraulic snubbers shall he tested for :
a.
operability, including verification of. proper piston movement, lockup, and bleed. When competitive market-able test fixtures are available, but no later than 12/31/83, the functional test shall include demonstrating snubber bleed, or release, rate is within the specified range in compression or. tension.
b.
When competitive marketable test fix-tures are available, but no later than 12/31/83, the functional test shall also damonstrate that activation (restraining action) is achieved within the specified range of aloci ty or acceleration in both tension and compression.
5 The mechanical snubber functional tests shall verify:.
kDocg o!o83y4 a.
That the breakaway force that initiates P
free movement of the snubber rod PDR Anjendment No.76
- 3. 6/4. 6-6 l
s
QUAD CITIES DPR 30 i
Snubber service life monitoring shall be followed by the snubber surveillance inspection records and maintenance history records. The above record retention method shall be used to prevent the snubbers from exceeding a service life.
2.
Visual inspections shall verify:
l a.
There are no visible indications of damange or impaired operability, and b.
Attachments to the foundation or supporting structure are secure.
.c.
For hydraulic snubbers, the hydraulic fluid reservoir and fluid connections shall be inspected for cperability.
3.
Once each refueling cycle a represen-tative sample of 10% of the total of each type of snubber in use in the plant shall be functionally tested either in place or in a bench test.
For each snubber that does not meet the functional test criteria, an additional 10% of that type of snubber shall be functionally tested.
4.
The hydraulic snubbers shall be tested for :
a.
operability, including verification of propsr piston movement, lockup, and blehd. When competitive market-able test fixtures are available, but no later 'than 12/31/83, the functional test shall include demonstrating snubber bleed, or release, rate is within the specified range in compression or tension.
b.
When competitive marketable test fix-tures are available, but no later than 12/31/83, the functional test shall also demonstrate that activation (restraining action) is achieved within the specified range of velocity or acceleration in both tension and compression.
5.
The mechanical snubber functional tests shall verify:,
a.
That the breakaway force that initiates free movement of the snubber rod Amendment No. 70 3.6/4.6-6