RP Field Test

Preparation
  1. NOTIFY CUSTOMER
  2. INSPECT AREA
  3. FLUSH TESTCOCKS (open 4, 3, 2, 1, then close 1, 2, 3, 4)
  4. INSTALL FITTINGS
  5. INSPECT TEST KIT - CLOSE ALL NEEDLE VALVES
   

Test #1 - Test Check valve #1 for tightness
  1. ATTACH HIGH HOSE TO TESTCOCK 2
  2. ATTACH LOW HOSE TO TESTCOCK 3
  3. OPEN TESTCOCK 3 SLOWLY then OPEN LOW BLEED
  4. OPEN TESTCOCK 2 SLOWLY then OPEN HIGH BLEED
  5. CLOSE OUTLET SHUT-OFF VALVE
  6. CLOSE BLEEDS - HIGH FIRST, LOW LAST
  7. OBSERVE CV 1 - (RECORD as CLOSED TIGHT or LEAKING)
If check valve #1 leaks stop test and repair
  fig6_6.gif

Test #2 - Record relief valve opening point
  1. OPEN HIGH CONTROL VALVE 1 FULL TURN
  2. PLACE HAND UNDER VENT
  3. OPEN LOW CONTROL SLIGHTLY
    - NO MORE THAN 1/4 TURN
  4. RECORD RV OPENING > or = 2.0 psi
  5. CLOSE LOW CONTROL
If relief valve will not open attach a by-pass hose
from TC #1 to TC #4
  fig6_7.gif

Test #3 - Observe whether CV 2 Leaks or closed tight
  1. BLEED VENT (BY-PASS) HOSE
  2. ATTACH VENT HOSE TO TESTCOCK 4
  3. CLOSE VENT (BY-PASS) CONTROL
  4. OPEN TESTCOCK 4
  5. RESET GAUGE - (LOW BLEED)
  6. OPEN VENT CONTROL ONE FULL TURN
  7. OBSERVE WHETHER RELIEF VALVE VENT DRIPS
    (If the Relief Valve drips, RESET GAUGE [low bleed] ,
    If Relief Valve drips a second rime, then Check Valve 2 has failed and must be repaired)

    Close Vent Control ONLY if CV 2 leaks
  8. RECORD CV2 as CLOSED TIGHT or LEAKING -Continue to Test 4
  fig6_9.gif

Test #4 - Record CV 1
  1. RESET GAUGE - (LOW BLEED)
  2. RECORD CV 1 DIFFERENTIAL (5.0 psi or greater)

    If Check Valve 2 has failed do not continue past Test 4.

  fig6_9.gif

OPTIONAL TEST
Test #5 - Record Outlet Shutoff Valve

  1. CLOSE TESTCOCK 2 WAIT & CHECK GAUGE FOR LEAKS IN OUTLET SHUTOFF VALVE
  2. (RECORD as CLOSED TIGHT or LEAKING)

    If there is NO flow through the assembly, continue to next test.
    If the shut-off valve is leaking, stop testing the RP (do not proceed to test #6)

  fig6_10.gif

THIS TEST NOT REQUIRED
Test #6 - Record differential pressure across CV 2

  1. CLOSE VENT CONTROL
  2. CLOSE TESTCOCKS 3 & 4
  3. REMOVE VENT HOSE FROM TESTCOCK 4
  4. MOVE LOW HOSE TO TESTCOCK 4
  5. MOVE HIGH HOSE TO TESTCOCK 3
  6. OPEN TESTCOCK 4 SLOWLY then OPEN LOW BLEED
  7. OPEN TESTCOCK 3 SLOWLY then OPEN HIGH BLEED
  8. CLOSE HIGH BLEED FIRST, CLOSE LOW BLEED SLOWLY
  9. RECORD CV 2 DIFFERENTIAL > or = 1.0 PSI
  fig6_11.gif

Final Steps
  1. CLOSE TESTCOCKS - REMOVE ALL EQUIPMENT
  2. OPEN OUTLET SHUT-OFF VALVE SLOWLY
  3. OPEN ALL NEEDLE VALVES ON TEST KIT
   


Mar 11, 2012
rev Dec 17, 2013
  University of Florida, TREEO Center