ML20011D778
| ML20011D778 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 11/11/1985 |
| From: | Cummings D SOUTHERN CALIFORNIA EDISON CO. |
| To: | |
| Shared Package | |
| ML19310C572 | List: |
| References | |
| S2754908, NUDOCS 8912280417 | |
| Download: ML20011D778 (49) | |
Text
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POST TEST INSPECTION FOR LOSS OF COOLING TEST PERFORMED ON NOVEMBER 1, 1985 SCE P.O. S2754908 SCE TEST PROCEDURE 2PE-211-02 REY. O BWC S.O. 00Y14 BWC REPORT E12.5.146 November 11, 1985 PREPARED BY:
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, P.E.f-DAVID L. CUMMINGS BWCSR.DESIGNENGINEE7 WITNESSED BY:
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f 'SCE SR. MECHANICAL ENGINEER JOHN A. MFLDRUM, P.E.
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EDWARD G. MICHON5KI P.E.
SCE QUALITY ASSURANCE ENGINEER
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i TABLE OF C0NTENTS fagg l
1.
Introduction.....................
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!!. Operational History 1
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!!!. Disassembly and Inspection..............
1 - 13 IV.
Results and Conclusions 14 Appendix 1 - Photographs Appendix 2 - Seal Ring Check Sheets Appendix 3 - Material list and Assembly Drawing t
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Pace 1 1.
Introduction The Southern California Edison Com Bingham - Willamette Company (BWC)pany (SCE) has contracted with the to replace the rector coolant pump seals at the San Onofre Nuclear Generating Station (SONGS) Units 2 anti l
3 (SCE P.O. $2754908. BWC S.O. 00Y03/17). One of the original licensing requirements for SONGS units 2 and 3 was the capability of the reactor coolant pump seals to withstand a 30 minute loss of cooling water and to maintain function long enough to bring the plant to a safe shutdown.
Southern California Edison decided to perform a test on a scale model pump seal to satisfy this requirement.
The seal selected has a 4.50" balance diameter (the SONGS seal has a 9.50" balance diameter) installed in the Alamitos Generating Station Unit 3 - East Boiler Circulator Pump.
This report covers the disassembly inspection performed on the seal at BWC on November 4 and 5,1985 by Dave Cummings (BWC), John Meldrum (SCE),
j andEdMichonski(SCE).
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II.
Operating History 2
The seal assembly utilized to perform the loss of cooling test was originally assembled at BWC on October 9,1985.
The seal was then shipped assembled in a standard handling container to the Alamitos Plant. On October 23, 1985 the seal was installed in the Unit 3 - East Boiler Circulator Pump. The pump was started and operated with injection for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. On October 24, 1985 injection was secured and the pump operation continued until October 27, 1985 when it was stopped to complete test instrumentation.
The pump was restarted on October 31, 1985.
On November 1, 1985 the Loss of Cooling Water Test was conducted. All performance data is included in a separate report prepared by SCE SONGS 2 and 3 Startup.
!!1.
Disassembly and Inspection SEAL CARTRIDGE The overall appearance of the seal cartridge was excellent'(see photo #1).
The outer exterior surface below the lowest exterior staging sealing 0-ring was a light brown color caused by a particulate deposit. Above the staging 0-ring was generally shiny and bright.
There was no evidence of damage to any of the 0-rings or internal parts.
The backup ring (Item 411) was not in pl4ce at the top of the seal holder.
From all appearances it was not installed in that location prior to the test.
Item 402 - Seal Holder Seal holder was in good condition except for the discolorations noted in the examination above. All of the exterior fits were in good condition, t
not showing any picking up or gouge in the metal from the installation or removal of the seal (see photo #1).
The inside diameters were clean and bright and there was no evidence of picking up on any of the fits from the disassembly (see photo #8).
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Page 2
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Item 412 - Socket Head Capscr.as (Gland Retainer) i deposit of a black narticulate on the heads and shanks (see photo #9)ght The six socket head capscrews were in good condition having only a li l
Item 416 - Recirculation Impeller The recirculation impeller did not show any evidenec of contact on the wear ring surface.
Impeller was covered with a moderate deposit of black l
colored particulate but otherwise was in good overall condition (see photos #1, #2 and #10).
Item 435 Ring (Recirculation Impeller to Shaft)
The 0-ring was in excellent condition and had not taken a significant compression set on the inside or outside diameter surfaces. When stretched, the 0-ring was Resilient and returned to its original shape, item 423 - Sleeve Locking Pins (Recirculation Impeller to Lower Sleeve)
The two locking pins were in good condition showing no evidence of wear on the driving surfaces.
Item aa5 Ring (Gland Retainer to Stuffingbox) a q
0-ring was in excellent condition and had not taken a significant compression set on the inside or outside diameter surfaces. When stretched, the 0-ring was resilient and returned to its original shape.
Item 406 Ring (Seal Holder to Stuffingbox - Lower Position)
The 0-ring was in excellent condition and had not taken a significant compression set on the inside or outside diameter surfaces. When stretched, the 0-rir.g was resilient and returned to its original shape.
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'htem406-0-Ring (SealHoldertoStuffingBox-MiddleLower) 1 i.
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-This 0-ring was in excellent condition and had not taken a significant i
compression set on either the inside or outside oiameter surfaces.
When l
stretched, the O' Ring was resilient and returned to its original shape.
htem 406 Ring (Seal Holder to Stuffingbox - Middle Upper) t This 0-ring was in excellent condition and had not taken a significant compression set on either the inside or outside diameter surfaces.
When stretched, the 0-ring was resilient and returned to its original shape.
Item 406 Ring (Seal Holder to Stuffingbox - Upper)
This 0-ring was in excellent condition and had not taken a significant compression set on either the inside or outside diameter surfaces.
When stretched, the 0-ring was resilient and returned to its original shape.
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i Page 3 Item 411 - Backup Ring (Seal Holder to Stuffingbox)
The backup ring was inadvertently omitted from the assembly of the seal and was not utilized during this test.
Item 423 - Sleeve Locking Pins (Upper, Middle and Lower Sleeves) l Sleeve locking pins were all removed at the same time and fell in to the inside of the sleeves when they were removed.
Locking pins were in excellent condition showing no evidence of wear on the driving surfaces.
NO. 4 VAPOR.(BACKUP) SEAL _ ASSEMBLY
[
4 The.exterNbsurfaces of the No. 4 Seal Assembly did not show any evidence of damage.f om the loss of cooling test. A light deposit of a brown-orange t
particulate was observed on the top of the seal gland.
Otherwise, no 1
unusual conditions were observed, p
i ltem 419 - Rotating Seal Ring (No. 4 Seal) m The sealing, face of the rotating seal ring was in excellent conditicn (see photos #17, #20 and #23). When optically inspected it was flat within one light band. The support nose on the back surface was also in excellent condition and flat within one light band.
The inside diameter of the ring l
had a packed on deposit of a brown-orange particulate.
Dimensional inspectiontshowed wear of less than.001 inch.
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Item 418' kotating Suport Ring (No. 4 Seal) i Top surface of the rotating support ring showed evidence of good contact t
with the supporting nose of the mating rotating ring (see photo #19).
Inside the,. support nose surface there was relatively heavy deposit of a brown-black. particulate. The back surface showed evidence of complete contact with the support nose on seal sleeve.
It also had a deposit of abrown-blackparticulateinsidethesupportnosesurface(seephoto#22).
The anti-rotation pin was in excellent condition and did not show any evidenceofheavyloading(seephoto#24).
i Item 413 - Seal Sleeve (No. 4 Seal)
The upper xterior surfaces of the vapor seal sleeve had a' deposit of a fine black particulate. The particulate had spots similar to what occurs when water drops dry on a surface (see photo #25).
About halfway down the deposit on the external surfaces of the sleeve turned to a brown-orange color. The support nose was in good condition.
Surfaces inside the support nose had a heavy deposit of a brown-orange particulate appearing to be iron oxide (see photo #21).
The inside diameter of the sleeve was in good condition and did not show any evidence of picking up on the shaft.
Item 432 Ring (Vapor-Rotating Seal Ring to Rotating Support Ring)
This 0-ring was in excellent condition and hac not taken a significant compression set on the inside our outside diameters. When stretched, the 0-ring was resilient and returned to its original shape.
Page 4 Item 432 Rino (Vapor-Rotating Support Ring to Seal Sleeve)
This 0-ring was in excellent condition and had not taken a significant compression set on the inside or outside diameters. When stretched, the 0-ring was resilient and returned to its original shape.
Item 433 - 0 Ring (Vapor-Centering Rotating Seal Ring)
This 0-ring had not taken a significant compression set on either the inside or outside diameters. When stretched, the 0-ring was resilient aad returned to its original shape.
During the stretching, small cracks were visible in the elastomer.
A small amount of material had flaked away from the surface around the outsice diameter of the 0-ring. The 0-ring had adhered to the rotating ring and had to be pulled off during disassembly.
Possibly this accountsyfor the removal of material from the surface, item 433 Ring (No! 4 Setil-Rotating Support Ring to Seal Sleeve)
This 0-ring was in excellent condition and had not taken a significant compression ~ set on~thFinside or outside diameters.
When stretched, the 0-ring was resiltent and returned to its original shape, item 435 Ring (No. 4 Seal Sleeve to Shaft)
This 0-ring was in excellent condition and had not taken a significant compression-set on the inside or outside diameters.
When stretched, the 0-ring was resilient and returned to its original shape.
Item 420 - Stationary Seal Ring (No. 4 Seal)
The stationary seal ring overall was in excellent condition. There was slight evidence offphonographing and a narrow area with a mat finish on the center of the sealing. face (see photos #18 and #26).
When optically,
inspected the sealing face was flat within one light band.
The matted area was difficult to read,under the optical flat.
The back supporting surface was smooth and~ polished and in the same condition as when installed.
This surface was flat within two light bands. The seal ring was difficult to remove from the carrier, apparently because the anti-rotation pin hole was pushed tightly against the anti-rotation pin in the carrier. When dimensionally inspected approximately.001 of an inch wear was observed, item 421 - Stationary Ring Carrier (No. 4 Seal)
The stationary seal ring carrier was in excellent condition overall (see photo #27). The anti-rotation lug showed light polishing on the drive surface but no evidence of wear.
The inside diameter of the carrier had a deposit of a light brown-black particulate. The anti-rotation pin wts in excellent condition. The backseat surface was flat within two light bands, Item 434 Ring (No. 4 Seal Stationary Ring to Carrier)
This 0-ring was in excellent condition and had not taken a significant compression set on the inside or outside diameters.
When stretched, the 0-ring was resilient and returned to its original shape.
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i Item 425 - Retaining Ring (No. 4 Seal)
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The retaining ring was in good condition, j
Item 427 - Ring Retainer (No. 4 Seal) j The ring retainer was in good condition.
Item 430 Ring (No. 4 Seal) - Carrier to Secondary Sleeve)
This 0-ring was in excellent condition and had not taken a significant compression set on the inside or outside diameters. When stretched, the 0-ring was resilient and returned to its original shape.
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.2 Item 431 - Backup Ring (No. 4 Seal - Carrier to Secondary Sleeve)
The backup ring was in excel}egcondition.
Item 428 - Seal Springs (No.: 4 Stal) m.
The seal springs were in excellent condition.
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Item 403 - Gland (No. 4 Seal)
The glend was in excellent condition.
There was a deposit of orange-brown j
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particulate on the top surface' The anti-rotation lug groove showed j
evidence of contact but no wear' could be detected, i
,n Item 405 Ring (No. 4 Seal - Gland to Seal Holder)
This 0-ring was in excellent condition and had not taken a significant compression set on the inside or outside diameters. When stretched, J
the 0-ring was resilient and returned to its original shape.
ue Item 404 - Backup Ring (No. 4(Seal - Gland to Seal Holder)
The gland to seal holder backup ring was inadvertently omitted from the assembly.
Item 437 - Secondary Seal Si nve (No. 4 Seal) l The secondary seal sleeve was in excellent condition (see photo #46).
There was no evidence of wear-and no indication that the surface had been damaged by the high temperatures.
Item 425 - Retaining Rings (No. 4 Seal) i The retaining rings were in excellent condition.
Item 429 Ring (No. 4 Seall This 0-ring was in excellent condition and had not taken a significant j
compression set on the inside or outside diameters. When stretched, the 0-ring was resilient and returned to its original shape.
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Page 6 NO. 3 SEAL ASSEMBLY The exterior surfaces of the No. 3 seal assembly did not show any evidence of damage from the loss of cooling test (see photo #9).
Item 419 - Rotating Seal Ring (Upper)
The sealing surface of the rotating seal ring was shiny and bright (see photos #15 and $28).
There was little evidence of phonographic marking.
When optically inspected the seal was flat within one light band. Support nose was also in excellent condition.
It also was flat within one light band. Wear was too small to measure.
' Item 418 - Rotating Support Ring (No.<'3 Seal)
The top surface of the rotating support r$ng was in excellent condition (see photo #29).
The rotating ring support nose showed complete contact o_n this surface. The back surface was alko in excellent condition and support nose on the sleeve had als6 5ade complete contact. There was
- a. slight blue-black color to this surfacei appearing like metal discolored by heat.
The anti-rotation pin was in excellent condition.
c.n b gnt Item 415 - Seal Sleeve (No. 3 Seal) xc The seal sleeve was in overall excellent condition (see photo #30).
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.The surfaces were bright and shiny.
The support nose surface was in 4
excellent condition; however, there wasia deposit in several isolated locations of a black particulate.
The'insice diameter did not show any evidence of picking up on the shaft.
item 432 Ring (No. 3 Seal - Rotating Seal Ring to Rotating Support Ring)
This0-ringwasinexcellentconditiona$dhadnottakenasignificant compression set on the inside or outside diameters.
When stretched, the 0-ring.was resilient and returned to its original shape, item 432 Ring (No. 3 Sal - Rotating Support Ring to Seal Sleeve) t, r&
This 0-ring was in excellent condition and had not taken a significant compression set on the inside or outsidetdiameters. When stretched,
-the 0-ring was resilient and returnedtto its original shape.
Item 433 - 0 Ring (No: 3 Seal - Rotating Ring Centerina)
This 0-ring was in excellent condition and had not taken a significant compression set on the inside or outside diameters. When stretched, the 0-ring was resilient and returned to its original shape.
item 433 Ring (No. 3 Seal - Support Ring Centering)
This 0-ring was in excellent condition and had not taken a significant compression set on the inside or outside diameters. When stretched, the 0-ring was resilient and returned to its original shape.
Page 7 Item 435 Ring (No. 3 Seal - Sleeve to Shaft)
This 0-ring was in excellent condition and had not taken a significant compression set on the inside or ouside diameters.
When stretched, the 0 ring was resilient and returned to its original shape.
Item 420 - Stationary Seal Ring (No. 3 Seal)
The outer half of the sealing surface of the stationary seal ring was shiny I
and bright with only minor phonographing (see photos- #16 and #31).
It did, however, have an unusual marking around the inside half of the sealing surface.
The outside one half of the sealing surface was flat within two light bands. The inside one half of the sealing surface was not readable.<~ The backside of the stationary ring was out of flatness and measured eight light bands.
When dimensionally inspected approximately J
.001 wear was measured.
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.., x Item 421 - Stationary Seal Ring Carrier (No. 3 Seal)
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i The stationary seal ring carrier was in excellent condition (see photo #32).
The anti-rotation lug did not show any evidence of wear, i
The lapped support surface was flat within one light band.
v tre Item 434 Ring (No. 3 Seal - Stationary Ringito Carrier)
This 0-ring was in excellent condition and had not taken a significant compression set on the inside or outside diameters.- When stretched, the 0-ring was; resilient and returned to its original shape.
Item 426 - Retaining Ring (No. 3 Seal) t The retaining ring was in excellent condition. 1 04
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Item 427 - Ring Retainer (No. 3 Seal)
The ring re iner was in excellent condition.
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- f5 Item 430'- DeRing (No. 3 Seal - Carrier to Secondary Seal Sleeve)
This 0-ring was in excellent condition, and had not taken a significant compression set on the inside or outside diameters'.
When stretched the 0-ring was resilient and returned to its original shape.
Item 431 - Backup Ring (No. 3 Seal - Carrier to Secondary Seal Sleeve)
The backup ring was in excellent condition.
Item 428 - Seal Springs (No. 3 Seal)
The seal springs were in excellent condition.
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i Item 409 - Gland (No. 3 Seal)
Exterior surfaces of the gland were relatively clean but did have a fine deposit of black particulates (see photo #3).
The anti-rotation lug slot was in good condition. Contact from the carrier lug was visible but no wear was apparent.
l Item 405 Ring (No. 3 Seal - Gland to Seal Holder) i The 0-ring was in excellent condition and had not taken a significant compression set on the inside or outside diameters. When stretched the 0-ring was resilient and returned to its original shape.
Item 437 - SecondarylSeal Sleeve (No. 3 Seall' The secondary seal; sleeve was in good condition. The location where the secondary seal 0-ring had sealed was visible but there-was-no evidence of wear.
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Item 429 Ring [NE. 3 Seal - Secondary Seal to Gland)
This 0-Ring was in excellent condition and had not taken a significant compression set on'the inside or outside diameters. When stretched.
the 0-ring was resilient and returned to is original shape.._
Item 425-Retaining $ing(No.3 Seal) 1 no 1
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t These retaining _ rings were in excellent condition, 1
NO. 2 SEAL ASSEMBLY on ant; The exterior surfacei.of the No. 2 seal assembly did not s ow any evidence of damage from the loss of cooling test (see photo #6).
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Item 419 - Rotating-$eal Ring (No. 2 Seal m+
The sealing surface"of the rotating ring was in excellentL,co,ndition (see photos #12 andr#33).
There were very light ph~onograph'ic markings present. The support nose surface was also in excellent condition.
The sealing face was flat within one light band.
The support nose was also flat within one bandP When dimensionally inspected the wear was too small to measure, e n a
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_ Item 418 - Rotating Support Ring (No. 2 Seal) l l
The top surface of the rotating support ring was in excellent condition I
(see photo #35). There was evidence of full contact with the rotating ring.
The backside was also in excellent condition with evidence of full contact with the seal sleeve.
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Page 9 Item 415 - Seal Sleeve (No. 2 Seal)
The seal sleeve was in excellent condition (see photo #36).
The outside surfaces had a light deposit of a black colored particulate.
The support nose was in in excellent condition.
It also had a light coating of a light black particulate.
The inside diameter did not show any indication of picking up on the shaft.
This surface was also covered with a light coating of a black colored particulate.
Item 432 - 0 Ring (No. 2 Seal - Rotating Seal Ring to Support Ring)
This 0-ring was in excellent condition and had not taken a significant -
compression set on the inside or outside diameters.
When stretched, i
the 0-ring was resilient and returned to its original shape.
Item 432 Ring (No. 2 Seal - Rotating Support Ring to Seal Sleeve)
This 0-ring was in excellent condition and had not taken a significant' compression set on the inside or outside diameters. When stretched the:
0-ring was resilient and returned to its original shape.
if item 433 Ring (No. 2 Seal - Rotating Ring Centering)
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This 0-ring was in excellent condition and had not taken a significanti i
compression set on the inside or outside diameters. When stretched the 0-ring was resilient and returned to its original shape.
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Item 433 Ring (No. 2 Seal - Support Ring Centering)
This 0-ring was in excellent condition and had not taken a significant!
compression set on the inside or outside diameters. When stretched the 0-ring was resilient and returned to its original shape.
Item 435 Ring (No. 2 Seal - Sleeve to Shaft) i This 0-ring was in excellent condition and had not taken a significant' compression set on the inside or outside diameters. When stretched the 0-ring was resilient and returned to its original shape.
Item 420 - Stationary Seal Ring (No. 2 Seal)
The stationary seal ring appeared to be in excellent condition (see photos
- 14 and 37). The sealing surface was still polished and there was a very light phonographic marking on the surface. When optically inspected the 1
sealing face was flat within two light bands. The backside was also still polished, however, when optically inspected it was not readable.
Dimensional inspection showed wear to be less than.001 of an inch.
Item 421 - Stationary Ring Carrier (No. 2 Seal)
The stationary ring carrier was in overall excellent condition (see photo #38). The anti-rotation lug had very slight polishing but no evidence of wear. The external surfaces of the carrier were covered with a light deposit of a fine black particulate. The lapped backseat surfaces was flat within two light bands. A discoloration was noted on'this surface which was black in color and not easily removable, t
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Item 434 Ring (No. 2 Seal)
This 0-ring was in excellent condition and had not taken a significant compression set on the inside or outside diameters. When stretched, the 0-ring was resilient and returned to its original shape.
Item 426 - Retaining Ring (No. 2 Seal)
The retaining ring was.in excellent condition.
Item 427 - Ring Retainer (No. 2 Seal)
The ring retainer was in excellent condition.
Item 430 Ring (No. 2 Seal - Carrier to Secondary Seal Sleeve)
This 0-Ring was in excellent condition and had not taken a significant compression set on the inside or outside diameters. When stretched, the 0-ring was resilient and returned to its original shape.
Item 431 - Backup Ring (No. 2 Seal - Carrier to Secondary Seal Sleeve)
The backup ring was in excellent condition.
Item 428 - Seal Springs (No. 2 Seal)
The seal springs were in excellent condition.
Item 408 - Gland (No. 2 Seal)
The gland was in overall excellent condition (see photo #39). There was a light deposit of a black particulate over all external surfaces of the gland.
The anti-rotation lug slot showed evidence of contact but did not show any measurable wear, item 405 Ring (No. 2 Seal - Upper Position)
This 0-ring was in excellent condition and had not taken a significant compression set on the inside or outside diameters. When stretched, the 0-ring was resilient and returned to its original shape, item 405 Ring (No. 2 Seal - 1.ower Position)
This 0-ring was in excellent condition and had not taken a significant compression set on the inside or outside diameters. When stretched, the 0-ring was resilient and returned to its original shape, item 437 - Secondary Seal Sleeve (No. 2 Seal)
The secondary seal sleeve was in overall excellent condition. The location where the 0-ring was sealing was visible because of discoloration but no wear was apparent.
Page 11 Item 425 - Retaining Ring (No. 2 Seal)
The retaining rings were in excellent condition, item 429 Ring (No. 2 Seal - Secondary Sleeve to Gland)
This 0-ring was in excellent condition and had not taken a significant compression set on the inside or outside diameters. When stretched, the 0 ring was resilient and returned to its original shape.
NO. 1_ SEAL ASSEMBLY The exterior surfaces of the No. I seal assembly did not show any evidence of damage from the loss of cooling test (see photo #7).
4 Item 419 - Rotating Seal Ring (No.1 Seal) j The sealing surface of the rotating ring was very lightly grooved and had a matted finish on the inside one half of the sealing face (see photos
- 11 and #40). The support nose was in good condition, however, there was a blue-black discoloration over about a 120' arc of the surface. The sealing face was flat within one light band. The support nose was also flat within one light band. Wear was too small to measure, item 418 - Rotating Support Ring (No.1 Seal)
The top surface of the support ring was in excellent condition (see photo #41). The rotating ring nose appeared to have 100 percent contact on the surface.
The bottom surface also was in excellent condition, appearing to have full contact with the seal sleeve, Item 415 - Seal Sleeve (No. 1 Seal)
The seal sleeve was in excellent condition (see photo #42).
There was a light coating of a black colored particulate.
The support nose was
. slightly discolored, but otherwise in excellent condition.
The inside diameter fits did not show any evidence of picking up on installation or removal, item 432 Ring (No.1 Seal - Rotating Ring to Rotating Support Ring)
This 0-ring was in excellent condition and had not taken a significant compression set on the inside or outside diametert.
When stretched, the 0-ring was resilient and returned to its original shape, item 432 Ring (No. 1 Seal - Rotating Support Ring to Sleeve)
This 0-ring was in excellent condition and had not taken a significant compression set on the inside or outside diameters. When stretched, the 0-ring was resilient and returned to its original shape.
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Page 12 Item 433 Ring (No. 1 Seai - Rotating Ring Centering)
This 0-ring was in excellent condition and had not taken a significant compression set on the inside or outside diameters.
When stretched, the 0-ring was resilient and returned to its original shape.
Item 433 - 0 Ring (No. 1 Seal - Support Ring Centering)
This 0-ring was in excellent condition and had not taken a significant compression set on the inside or outside diameters, When stretched, the 0-ring was resilient and returned to its original shape.
Item 435 Ring (No. 1 Seal - Sleeve to Shaft) i This 0-ring was in excellent condition and had not taken a significant compression set on the inside or outside diameters.
When stretched, the 0-ring was resilient and returned to its original shape.
Item 420 - Stationary Seal Ring (No. 1 Seal)
The stationary seal ring was in good condition (see photos #12 and #43).
There was a light matted finish over approximately one-third of the sealing face. On this area there was a light phonographic type marking. The rest of the sealing face was shiny and polished. The backside of the ring was in good condition and polished over its entire surface.
Both sides of this ring were flat within one light band.
When dimensionally inspected wear was too small to accurately measure.
Item 421 - Stationary Ring Carrier (No.1 Seal)
The stationary ring carrier was overall in excellent condition (see photo (44).
Exterior surfaces of the carrier were 1~ightly discolored with deposit of a black particulate.
Light polishing was present on the anti-rotation lug.but no evidence of wear could be observed. The backseat surface was slightly discolored with a black colored plating.
Item 434 Ring (No. 1 Seal - Stationary Ring to Carrier)
This 0-ring was in excellent condition and had not taken a significant compression set on the inside or outside diameters.
When stretched, the 0-ring was resilient and returned to its original shape..
Item 425 - Retaining Ring (No. 1 Seal)
The retaining ring was in excellent condition.
Item 427 - Ring Retainer (No. 1 Seal)
The ring retainer was in excellent condition.
Item 430 Ring (No. 1 Seal - Carrier to Secondary Seal Sleeve)
This 0-ring was in excellent condition and had not taken a significant compression set on the inside or outside diameters.
When stretched, the 0-ring was resilient and returned to its original shape.
Page 13 Item 431 - Backup Ring (No.1 Seal - Carrier to Secondary Seal Sleeve)
The carrier to secondary seal sleeve backup ring was in excellent condition.
Item 428 - Seal Springs (No.1 Seal)
The seal springs were in excellent condition.
Item 409 - Gland (No. 1 Seal)
The gland was in overall excellent condition (see photo #45).
It had a moderate coating of black colored particulate. The substance adhered to the gland and did not wipe off easily. The anti-rotation lu showed evidence of contact but there was no observable wear.g groove Item 405 Ring (No. 1 Seal - Top Position)
This 0-ring was in excellent condition and had not taken a significant compression set on the inside or outside diameters. When stretched, the 0-ring was resilient and returned to its original shape.
Item 405 Ring (No.1 Seal - Lower Position)
This 0-ring was in excellent condition and had not taken a significant compression set on the inside or outside diameters. When stretched, the 0-ring was resilient and returned to its original shape.
Item 437 - Secondary Seal Sleeve (No.1 Seal)
The secondary sleeve was in overall excellent condition. The exterior fit to the gland was plated with a black colored substance the same as the gland.
There was a light marking from where the carrier 0-ring seal was visible; however, no wear could be observed.
Item 425 - Retainino Rina (No. 1 Seal)
The retaining rings were in excellent condition.
Item 429 Ring (No. 1 Seal - Gland to Secondary Sleeve)
This 0-ring was in excellent condition and had not taken a significant compression set on the inside or outside diameters. When stretched, the 0-ring was resilient and returned to its original shape, i
i Page 14 i
IV.
Inspection Results and Concu1sions The overall condition of the seal considering the elevated temperature operation was excellent, particulates were observed in the seal but appeared to be magnetite (Fe 0,) or ordinary rust (Fe,0 Only one 0-ringlocatedinthevapors, ell (rotatingringcenteri$g).) appeared to be damaged from the heat.
The position of this 0-ring is on the low pressure side of the seal where it would have been subjected to steam or in a dry environment.
Seal ring wear was too small to consider significant. Minor phonographic marking was typical of a seal operating with suspended solids present. The lapped back supporting surfaces of the stationary rings from the number 2 and number 3 seals were no longer flat after the test. No reason for this phenomenon was detected and the front sides remained flat.
Since performance after the test, i.e. leakage and staging, were still satisfactory the flatness change is not considered significant.
The seal was in such good condition it could have continued to operate for a long period of time after the test.
No conditions were observed which were unsatisfactory.
The physical performance of the seal is considered to have surpassed all test criteria.
i s
i
J-a
.,a, b
I b
i l
f APPENDIX 1
PHOTOGRAPHS r
4 5
a 6
I I
+-
t PHOTO L0G EXPOSURE NUMBER DESCRIPTION 1
BV450B-3V Seal Assembly After Loss of Cooling Test 2
Bottom of BV450B-3V Seal Assembly Showing Gland l
Retainer and Recirculation Impeller 3
BV450B-3V Seal Stack (Seal Holder Removed)
[
4 Number 4 Seal Assembly 5
Number 3 Seal Assembly l
'6 Number 2 Seal Xssembly l
7 Number 1 Seal Assembly j
8 Seal Holder Internal Fits
[
9 Gland Retainer and Associated Fasteners t
10 Recirculation Impeller 11 Number 1 Seal Sleeve Assembly Including Rotating l
Ring l
12 Number ~1 Seal Carrier Assembly Including Stationary Ring 13 Number 2 Seal Sleeve Assembly Including Rotating Ring l
14 Number 2 Seal Carrier Assembly Including Stationary i
Ring 15 Number 3 Seal Sleeve Assembly Including Rotating Ring j
16 Number 3 Seal-Carrier Assembly Including Stationary Ring 17 Number 4 Seal. Sleeve Assembly Including Rotating Ring 18 Number 4 Seal Carrier Assembly' Including Stationary
{
Ring i
19 Number 4 Seal' Sleeve'With Support Ring.' Note Particulate Matter Deposited on Sleeve.
j 20 Number 4 Seal Rotating Ring. _ Support Side.
Note Particulate Matter Deposited Inside The= Support Nose Surface._
21 Number 4 Seal Sleeve.
Note Particulate Deposits Inside The Support ~ Nose Surface.
22 Number 14. Seal' Support Ring Top-Side.
Note Particu-late Deposits Inside-Tho Support Nose Diameter 23 Number 4' Seal Rotating Ring Sealing Surface l
24 Number 4 Seal Support Ring Bottom Side 25 Number 4 Seal Sleeve J
h
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A L-w.,
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PHOTO L 0 G-Page 2 1
EXPOSURE
{
NUMBER DESCRIPTION 26.
Number 4 Seal Stationary Ring Sealing Surface 27 Number 4 Seal Stationary Ring Carrier j
28 Number 3 Seal Rotating Ring Sealing Surface l
29 Number 3 Seal ~ Rotating Support Ring Top Side 30' Number 3 Seal Sleeve 31-Number 3 Seal Stationary Ring Sealing Surface f
32 Number 3 Seal Stationary Ring Carrier 33 Number 3 Seal Gland Number 2 Seal Rotating Ring Sealing Surface i
34 35 Number 2 Scal Rotating Support Ring Top Side f
~
36 Number 2 Seal Sleeve 37 Number 2 Seal Stationary Ring Sealing Surface
{
38 Number 2 Seal Stationary Ring Carrier 39 Number 2 Seal + Gland 40
' Number-1 Seal Rotating Ring Sealing. Surface l
41 Number 1 Seal Rotating Support Ring Top Side 42 Number 1 Seal Sleeve f
43 Number 1 Seal Stationary Ring 44 Number 1. Seal Stationary Ring Carrier i
45 Number.1 Seal Gland 46 Number 4. Seal Secondary Seal Sleeve (Condition of f
This Sleeve is Typical ofEAll Four Positions) i
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Side. Note Particulate Deposits
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APPENDIX 2
SEAL RING CHECK SHEETS i
e 4
1 I
4 6
e
DATA SHEET "D" Rotating Seal Ring THICK NESS ( Dimension "T") Notes: 1. 8 2.
N S
BLY REV.
NUMBER NUMBER (Mfgr13 Gr.)
(if Appl.)
a HOLE 90* CW 180* CW 270* CW AVERAGE B ACK-UP ( #4 )
B-39680 e
41 x801 N/A
.376
.376
.376
.375
.376
.375
.376
.375
.375
.375 42 K801 N/A
.375
.375
.375
.375
.375 UPPER
(#3)
B-39680 8
.375
.375
.375
.375
.375 40 K801 N/A
.376
.375
.376
.376
.376 MIDDLE
.(#2)
B-39680 8
.376
.375
.376
.376
.376
~
L<0WER
(#1)
B-39680 8
39 Kao1 N/A
.377
.376
.376
.377
.377
.377
.376
.376
.377
.377 ASSIGNED LOC.
FACE FLATNESS (3)I NOSE DEPTH OF IN ASSEMBLY HELIUM CONCAVE fuM GROOVE "G" Note: 4.
LT BANDS or CONVEX LT. BANDS 4
"T".375_~ h +
"G"f.088$~$
_2 CONVEX 1
BACK-UP ( #4 )
1 CONVEX 1
//
(#3) 2_
CONVEX 1
/
UPPER 1
CONVEX 1
/'
From
(#2) 2 CONVEX 1
Nose MIDDLE i
i I#
LOWER f
CONVEX I
_ y
. NOTESJ I. THICKNESS IVIUST BE WITHIN TOLERANCE SHOWN IN "X"-SECTION
- 2. MAX. VARIATION IN THICKNESS (180* APART)
MUST NOT EXCEED.001": REJECT OR REWORK RING.
- 3. FACE FLATNESS MUST BE. LAPPED WITHIN s-er (2) LIGHT BANDS CONVEX.
DATA SHEET "C" Stationary Seal Ring DR AWING SERI AL MATERIAL BATCH N* THICKNESS (DIM."T" ) NOTES: IB2 i
N SSEMBLY REV.
NUMBER NUMBER (Mfgrt Gr. )
(if Appi.)
AT S N.
D' g.CW 180* CW 270*CW AVERAGE H
BACK-UP(g4)
B-39685 0
8 CNFJ N/A
.394
.394 394 394'
.394 N/
.393
.393 393
.393
.393 UPPER
(#3)
B-3 3 6 8 5 D
7 CNFJ N/A
.394
.394 393
.394
.394 N
.393
.393 393
.393
.393 MIDDLE
(#2)
B-39685 D
6 CNFJ N/A
.395
.395 395
.395
.395
.394
.395 395
.394
.394 N/
1
~
LOWER
(#1)
B-2 9685 D
5 CNFJ N/A
.397
.397 397
.398
.397 N/
i
.397
.397
. 396
_397
.397 ASSIGNED LOC.
FACE FLATNESS Note : 3 REFERENCE " X "- SECTION -
COMMENTS l
IN ASSEMBLY TOP SURFACE BOTTOM SURFACE CONCAVE CONCAVE Note: 4 cr. BANDS or CONVEX LT. BA NDS or CONVEX
+.030 1.005
- Top-Initial Oimensions B ACK-UP ( g4 3
_3 CON M Q
CON m 1
CONVEX 2
CONVEX
[
/ l_
f.005
,, g g
UPPER
(#3) 4
' CONVEX 2_
CONVEX
/
1 CONVEX 8
CONVEX
.T" m
f MIDDLE
(#2) 3 CONVEX 2
CONVEX 400pO0
- 9 0 2
CONVEX M M
LOWER
(#1) 4--
CON m 3_
CON M 1
CONVEX 1
CONVEX
-^.
NOTESI 1. THICKNESS MUST BE WITHIN TOLERANCE SHOWN IN "X"- SECTION.
- 2. MAX VARIATION IN THICKNESS (180* APART)
MUST NOT' EXCEED.001": REJECT OR
' REWORK RING.
- 3. FACE FLATNESS MUST BE LAPPED WITHIN s
(2) LIGHT BANDS CONVEX.
"-*- 80 i
,c-
...m
__.________________.____._4__,-
y
' )
i 4
1
'I a
1 APPENDIX 3
MATERIAL L'I S T AND ASSEMBLY DRAWING s
i N
~
e...m......
PUMP:
BOILER CIRCULATOR PUMP SERIAL NO.
PO 1B539 Lf'$f TYPE:
SHEET DRAWING BV450B-3V N o.
1 ei 2 NO.
E-19448 FIND NO.
ITEM NO.
OTY.-
DESCRIPTION 402 1436856 1
HOLDER, SEAL F%TERIAL:
CA6NM-403 1263471 1
GLAND, VAPOR SEAL F%TERIAL:
410 S.S.
404 1263498 1
RING, BACKUP GLAND TO HOLDER PATERIAL:
EPR l
405 1066854 6
0-RING, GLAND TO HOLDER PATERIAL:
EPR l
406 1067206 4
0-RING. HOLDER TO STUFFINGBOX PATERIAL:
EPR 407 1263536 1
GLAND, UPPER SEAL PATERIAL:
410 S.S.
408 1263544 1
GLAND, MIDDLE SEAL 1%TERI AL:
410 S.S.
409 1263552 1
GLAND, LOWER SEAL PATERI AL:
410 S.S.
All 1263587 1
RING, BACKUP, HOLDER TO STUFFINGBOX MATERIAL:
EPR 412 1214772 6
CAPSCREW, FILTER ASSEMBLY TO HOLDER PATERIAL:
304 S.S.
413 1263587 1
SLEEVE, BACKUP SEAL PATERI AL:
410 S.S.
415 1263595 3
SLEEVE, SEAL PATERI AL:
410 S.S.
416 1263625 1
IMPELLER, RECIRCULATION PATERIAL:
CA6NM 418 1437518 3
RING, SUPPORT f%TERIAL:
K801 419 1437526 3
RING, ROTATING SEAL MATERIAL:
K801 420 1437534 3
RING, STATIONARY SEAL PATERI AL:
CNFJ 421 1437542 3
CARRIER, STATIONARY SEAL MATERIAL:
17-4 PH 423 1263684 8
PIN, SEAL SLEEVE LOCKING PATERIAL:
410 S.S.
425 1234005 8
RING, RETAINING, RS 4505 F%TERIAL:
302 S.S.
426 1234013 4
RING, RETAINING, UR 575S PATERIAL:
302 S.S.
427 1263692 4
RING, RETAINER F%TERIAL:
302 S.S.
428 1263706 80 SPRING, SEAL PATERI AL:
302 S.S.
3"*n%...*o sisf,0l'l.T.""oT.*:,'. int'.*4 !!'cU,*.%na7nUfn'i f5 n'& ;;;.
e f actories PORTL AND OREGON
- SHRE vt PORT. L OUISi AN A VAN 00UvtR. 8 c.
CAMBRIDGE. ONTARIO. CANAD A
~
s.- e..::,,
e PSNS PUMP; BOILER CIRCULATOR PUMP SERIAL NO.
2S53' lIh TYPE:
SHEET DRAWING BV450B-3V NO.
2 of 2
N O.
E-19448 FIND NO.
ITEM NO.
- OTY, DESCRIPTION 429 1066676 4
0-RING (SECONDARYSEALTOGLAND)
PATERIAL:
EPR 430 1066692 4
0-RING (SECONDARY SEAL TO GLAND)
PATERIAL:
EPR 431 1263714 4
RING, BACKUP (SECONDARY SEAL / CARRIER)
PATERIAL:
BACKUP (SECONDARYSEAL/ CARRIER) 432 1437615 8
0-RING (ROTATING & SUPPORT RING)
PATERIAL:
EPR 433 1468642 8
0-RING (ROTATING & SUPPORT RING)
PATERIAL:
VITON 434 1437623 4
0-RING (STATIONARY RING TO CARRIER)
PATERIAL:
EPR 435 1437631 5
0-RING (SLEEVE TO SHAFT)
PATERI AL:
EPR 437 1263749 4
SLEEVE, SECONDARY SEAL F%TERI AL:
410 S.S. W/LC4 438 1436805 1
GLAND RETAINER PATERIAL:
CA6NM 439 1437224 1
PIN', BACKUP SEAL SLEEVE F%TERIAL:
420 S.S.
440 1437569 1
PIN, BACKUP SEAL CARRIER PATERI AL:
302 S.S.
l l
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l be'rs Unnu Dered 5 ts an h llus a o s te in sa ea co re ponc n parts t nu e
Factories PORTL AND OREGON + SHRf vtPORT.LoulSIAN A VANCOUVER.OC + CAMBRIDGE. ONT ARIO. C AN AD A
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