HEPTAFLOUROPROPANE (HFP) SYSTEM CHECK SHEET (CONT’D)

UPDATED:APRIL 2012

HEPTAFLOUROPROPANE (HFP) SYSTEM CHECK SHEET

FOR USS

DATE:

REF: (a) PMS 5553/026

(b) NSTM 555

(c) GSO 555

(d) NAVSEA DWG 5959326 REV A

(e) S6430-AE-TED-010 VOLUME 1 REV 2

(f) NSTM 505

(g) DC Book

(h) NSTM 555 V1REV13

(i) MIL-STD 777E

(j) NAVSEA DWG 803-6397405

IAW / SAT/ UNSAT / SAT/ UNSAT / SAT/ UNSAT / SAT/ UNSAT / SAT/ UNSAT / SAT/ UNSAT
COMPARTMENT NUMBER
PRIMARY OR RESERVE
A. HFP FLEXIBLE DISCHARGE HOSE AND PIPING:
  1. Are all hoses tagged with hose assembly identification tags?
/ Ref (a) A-2
Ref (e)
2. Are the hoses in good condition?
- Large areas of paint are unsat..
- Broken wire strands (20 random or 10 adjacent wires are unsat).
- Corrosion on hose (greater than 1 square inch is unsat).
- Permanent deformation or bulging is unsat. / Ref (a) A-2
Ref (e)
3. Are the HFP discharge heads and piping free of damage, dents, cracks, deterioration and corrosion?
- Are the piping supports rusted and deteriorated? / Ref (f)
4. Are the discharge nozzles obstructed? / Ref (a) M-2R
B. HFP CYLINDERS (INSTALLED AND SPARE)
1.Are the securing brackets/ fasteners short studded/loose/missing?
2. Are cylinders properly secured in brackets?
- Cylinders mounted in Grade A shock mount brackets? / Ref (d)
3. Are HFP cylinder foundations rusted and deteriorated? / Ref (a) 60M-3
4. Are the HFP cylinders and discharge heads free from damage, welds, bulges, dents, cracks, cuts, corrosion?
- No pits or cuts deeper than 1/16 inch? / Ref (a) 60M-3
5. Do the spare HFP cylinders have the large shipping caps installed and the 1 ½ inch anti-recoil caps installed? / Ref (a) S-5
6. Is there a tare weight stamped on the cylinder dome? / Ref (a) R-1
7. Are cylinder pressures IAW PMS (based on temperature of space) and results recorded in a notebook or equivalent? / Ref (a) M-2R
8. Is the HFP cylinder gross weight, HFP charge net weight and the date weighed recorded on the back of the cylinder record tag?
- Does the cylinder serial number match the serial number on the front of the cylinder record tag? / Ref (a) R-1
9. Are the HFP cylinder shipping caps properly stowed? / Ref (c)
10. Are the HFP cylinder valve actuators the same manufacture? (ANSUL with ANSUL) & (KIDDIE with KIDDIE). / Ref (a) R-1
11. Do the HFP cylinders have a large gray stripe over a black stripe near the top of the cylinder? / Ref (a) R-1
Ref (b)
a. Is the agent name “heptaflouropropane” painted vertically on the cylinder? / Ref (a) R-1
Ref (b)
12. Is there a calibrated weight scale onboard to weigh the HFP cylinders and is it in good condition? / Ref (a) R-1
C. CO2 ACTUATOR CYLINDERS:
1. Are the CO2 cylinders free from damage, welds, bulges, dents, cracks, cuts, corrosion?
- No pits or cuts deeper than 1/16 inch? / Ref (a) S-3
2. Are the weight of cylinder and the charge stamped on the cylinder or valve? / Ref (a) S-3
3. Is there a cylinder record card attached to each cylinder, listing gross weight, net weight and date weighed?
- 5 lb CO2 cylinder PMS within periodicity?
- 5 lb CO2 cylinder hydrostatic test within periodicity (5 yrs if cylinder required refilling, 12 years if cylinder is full)? / Ref (a) M-2R,
S-3
4. Are the CO2 actuating cylinders installed in proper mounting brackets? / Ref (a) S-3
5. Are the mounting brackets correctly installed? / Ref (a) S-3
6. Are the mounting brackets loose/deteriorated? / Ref (a) S-3
7. Are there sufficient mounting brackets for spare 5 lb CO2 actuator cylinders? / Ref (c)
D. ACTIVATION STATIONS:
1. Is there at least a primary, reserve and EOS activation station? / Ref (b), (d)
2. Are the primary and the reserve activation stations located outside the machinery vestibules? / Ref (d)
3. Is the filter installed correctly?
- Filter was installed backwards.
- Filter was clogged.
- Filter not installed prior to time delay device.
- Time delay filter was incorrectly installed on top of the time delay bottle (where applicable). / Ref (a)
18M-3R
4. Are actuation stations identified with the photo luminescent marking “HFP actuation”? / Ref (c)
5. Did CO2 actuating piping reveal the presence of rust and moisture? / Ref (f)
6. Are the stations clearly marked (primary/reserve) with placards and/or warning signs installed? / Ref (d)
7. Are the pressure switches clearly marked for function? / Ref (d)
8. Was ¼ inch CU-NI tubing assemblies installed in the CO2 actuation piping? / Ref (j)
9. Were the bends on the CO2 actuation tubing correct?
- No bends less than 5D (5 pipe diameters)?
- No bends within 1-1/2 inches of the end or 1-1/4 inch from the swivel nut?
- Shock loops minimum 2-1/2 inches in diameter?
Note: A bend of 1/8 inch or less from being straight is acceptable. See figure 1. / Ref (h)
10. Are all threaded connections tight? / Ref (f)
11. Was ¼” check valve correctly installed and free of paint to determine direction of flow? / Ref (b)
Ref (c)
12. Were operational instructions and system diagrams posted? / Ref (d)
13. Was the correct CO2 actuation manifold vent fitting installed? / Ref (a) M-2R Ref (d)
14. Was CO2 welded-in actuation piping constructed of stainless steel? / Ref (i)
E. TIME DELAY DEVICE:
1. Does the time delay device installed match the time delay required IAW the ship’s DC book and is it properly engraved?
- Machinery space time delay should be 60 seconds.
- Gas turbine modules/diesel enclosures/RAST machinery room/towed array room/flammable liquids room/paint mixing and issue room time delay device is 30 seconds. / Ref (b), (d), (g)
2. Is the time delay manual bypass valve installed on the primary system at the actuation station outside the protected space? Is the bypass valve pinned in the closed position with a tamper seal installed, labeled, classified circle X-RAY, numbered and painted grey and white? / Ref (b), (d)
F. PRESSURE SWITCHES FOR PRE-DISCHARGE ALARMS, VENTILATION AND HALON FLOW CIRCUIT (MANUAL PULL TEST OR SYSTEM ACTIVATION):
1. Does the following occur when the primary and reserve pre-discharge pressure switches are activated?
a. Station alarm bell(s) activated?
b. All in-space audible alarms/horns activated?
c. All in-space and station bell/audible alarm cutout switches operational?
d. All in-space visual alarm(s)/beacon(s) activated? Was at least one visual beacon (or its reflection) visible from all points in the space?
e. “HFP Actuated” indicator energized at station and all remote indicator locations? Note in the remarks section any indicators with 1 or 2 of 2 indicator bulbs burned out. / Ref (a)
18M-3R
Ref (d)
2. Does the following occur when the primary and reserve ventilation shutdown pressure switches are activated?
a. All interlocked supply and exhaust ventilation fans secured? (Verify at controller) Note: Some secondary HFP system ventilation systems serving multiple spaces do not secure the ventilation. In this case, the space is isolated using motor operated dampers. (Verify all interlocked ventilation systems in DC book)
b. All supply and exhaust dampers fully shut? All damper position indicators (local mechanical and remote) correctly indicate damper position? / Ref (a)
18M-3R
Ref (d), (g)
3. Does the following occur when the primary and reserve HFP release pressure switches are activated?
a. “HFP Released” indicator energized at station and at all remote indicator locations? / Ref (a)
18M-3R
4. Are the power available lights operating at all stations? / Ref (d)
5. Do the local/remote indicators meet the following requirements?
a. Alarm status panel located outside each escape trunk exit?
b. Emergency lighting adequately provided at remote activation stations? /

Ref (d)

G. TEST TIME DELAY FOR PROPER OPERATION:
1. Are the machinery space time delay devices engraved with a time delay setting of 60 seconds? Gas turbine modules/diesel enclosures/RAST machinery room/towed array room/flammable liquids room/paint mixing and issue room, etc. time delay devices should be engraved with a time delay setting of 30 seconds. / Ref (d)
2. Did the time delay device activate within PMS time limits? Ansul/Carleton 30 second time delays = 30 +/- 5 seconds. All 60 second time delays = 60 +/– 10 seconds. / Ref (a)
18M-3R
Ref (d)
3. Did all valve actuators fully extend (approximately ¼ inch) within the time limits of the time delay [Ansul/Kidde heads]? / Ref (a)
18M-3R
4. [Ansul/Kidde Only] Did any of the o-ring seals leak in the valve actuators? / Ref (a)
18M-3R
5. Was there any CO2 leakage from the actuation system components? Was the leakage rate sufficient to affect HFP activation? / Ref (a)
18M-3R
6. Did all primary and reserve pressure switches (pre-release, vent shutdown and release) activate?
(Refer to Section F above.) / Ref (a)
18M-3R

Figure 1

REMARKS:

ASSESSOR(S):

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