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5. If the test pressure drops or cannot be reached, the PosLock operator will require adjustment (see the section titled 22 PosLock Operator Adjustment on page 5-104).

6. If there is no pressure drop, continue to pump, stopping at 500 psi (34.5 bar) increments to observe the pressure gauge, until the rated working pressure of the preventer is reached.

7. If the rated working test pressure of the preventer is reached, the PosLock operators are properly adjusted and in working order.

8. If the ram rubbers are in good condition, the preventer cavity dimensions are within specification, and wellbore pressure drops during the test, the PosLock operators will require adjustment (see the section titled 22 PosLock Operator Adjustment on page 5-104).

NXT Door Locking System and Door Hydraulic

Control Panel

Except for a lock rod safety latch (see Figure 4-7 on page 4-23) that must be manually released on each 22 PosLock door assembly before it can be opened, the door locking system (opening and closing of the BOP doors) is controlled with the BOP stack-mounted Hydraulic Control Panel (HCP) (see Figure 4-6). The HCP is hydraulically powered by a rig-supplied hydraulic source. A hose bundle connects the HCP to each door being unlocked and opened (see Figure 4-6). Quick-connect fittings on the end of the hoses, for the lock drive hydraulic connections, and the quick-connect manifold assembly on the door facilitate this process (see Figure 4-10 on page 4-25). The quick-connect fittings are two different sizes and genders to prevent improper connections. The HCP can be positioned in one of several positions on the BOP stack depending on which BOP ram door is being serviced (see Figure 4-9 on page 4-25).

Figure 4-6. Manifold with 6-Hose Bundle

Hose Bundle

Hydraulic Control Panel (HCP)

NXT UltraLock II (B) and NXT 22 PosLock(subsea application)

BOP Connection

Control PanelConnections

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Door Operation Instructions

Opening and closing the 14 UltraLock II (B) doors and 22 PosLock doors requires the use of the HCP (see Figure 4-8 on page 4-24). However, doors with 22 PosLock operators do not have hydraulically operated anti-rotation bars, and they do not use the Anti-Rotation Bar function on the HCP (see Figure 4-8 on page 4-24). The 22 PosLock doors use safety latches as an anti-rotation device, which must be manually operated (see Figure 4-7 on page 4-23).The 14 UltraLock II (B) doors use all three functions on the HCP. The 22 PosLock doors only use the LockBar and Door functions on the HCP (see Figure 4-8 on page 4-24).To open and close the preventer doors, proceed as follows:

1. Before attempting to unlock and open the BOP doors for servicing, verify the following:R There is 0 psi (0 bar) wellbore pressure.R The ram operators are in the Open position.R BOP control system pressure is 0 psi (0 bar) to the operating functions of the

ram operators.2. Position the HCP such that the hose bundle will reach the BOP doors to be serviced

(see Figure 4-9 on page 4-25).

3. On the 22 PosLock (surface application) door assembly being serviced, connect the quick-disconnect fittings on the hose bundle adapter to the mating quick-disconnect fittings on the lock drive (see Figure 4-10 on page 4-25). The fittings are configured with two different sizes and genders to facilitate correct connection.

4. On the 22 PosLock (subsea application) door assembly being serviced, connect the slip ring of the hose bundle to the door manifold assembly (see Figure 4-11 on page 4-26).

5. On the lock drive of the 22 PosLock door being serviced, remove the safety pin, and then rotate the safety latch from the Lock position to the Unlock position (freeing the lock rod) as shown in Figure 4-7 on page 4-23.

6. Verify rig hydraulic power source is capable of supplying SAE 20 (or equivalent) hydraulic fluid at approximately 3,000 psi (207 bar) and 5 gpm (18.9 lpm) to NAS Class 8 cleanliness.

7. Connect rig hydraulic power supply and return hoses to 1 quick-disconnect fittings on the HCP (see Figure 4-8 on page 4-24).

8. Turn on hydraulic power source.9. Using the HCP hydraulic regulator, adjust hydraulic pressure to 3,000 psi (207 bar).

Monitor pressure on gauge (see Figure 4-8 on page 4-24).

iiBe sure to turn off the hydraulic power source to the HCPand bleed hydraulic pressure to 0 psi (0 bar) before movingthe hose bundle to the next door to be serviced.

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10. Check for hydraulic leaks. If any are found, stop, turn off hydraulic power source, and then repair the leak before resuming operation.

11. Using the locking bar Lock/Unlock valve handle on the HCP, unlock the locking bar. This rotates the door lock rod to the Unlock position, freeing the door to open.

12. Once the lock rod is Unlocked, adjust the HCP pressure-reducing valve to 1,000 psi (69 bar), and then use the Door Close/Open valve handle on the HCP to open the door.

A properly adjusted door should rotate smoothly between 800 and 1,000 psi(55 and 69 bar).

13. To close the 22 PosLock door assembly, reverse the preceding instructions. To prevent the door lock rods from rotating, manually move the safety latches into the Lock position, and then install the safety pins (see Figure 4-7 on page 4-23).

14. On the 14 UltraLock II (B) door assembly, remove the hose bundle adapter, and then connect the slip ring of the hose bundle to the door manifold assembly (see Figure 4-12 on page 4-26).

iiThe 22 PosLock door assemblies may require adjustmentof the HCP hydraulic regulator. DO NOT EXCEED 3,000psi (207 bar).

iiThe door should open with a slow, smooth action. Thespeed that the door opens and closes can be regulated bythe Adjustable Flow Control Valves located on the HCP(see Figure 4-8 on page 4-24).

iiMake sure the door seal is not damaged and is properlypositioned before closing the door.

iiBe sure to turn off the hydraulic power source to the HCPand bleed hydraulic pressure to 0 psi (0 bar) before movingthe hose bundle to the next door to be serviced.

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15. To open and close the 14 UltraLock II (B) door assembly, the procedure is as described for the 22 PosLock doors, except in step 5 and step 13. In step 5 and step 13, the HCP Anti-Rotation Bar Lock/Unlock hydraulic function is used to lock (engage) and unlock (disengage) the door locking rods.

16. Before opening the 14 UltraLock II (B) door assembly, the Anti-Rotation Bar valve handle must first be moved into the Unlock position (disengage lockbar) before the Locking Bar valve handle is placed in the Unlock position (rotate lockbar).

17. After closing the 14 UltraLock II (B) door assembly, the Locking Bar valve handle must first be moved into the Lock position (rotate lockbar) before the Anti-Rotation Bar valve handle is placed in the Lock position (engage lockbar).

These operational instructions are repeated for each door that is opened and closed for servicing.

Figure 4-7. 22 PosLock Door Safety Latches

Warning

After closing and locking the 14 UltraLock II (B)doors, the correct installation of the anti-rotation hingepins should be checked. Failure to do so could causeequipment damage and/or injury or death topersonnel. Refer to the section titled 14 UltraLock II(B) Door Anti-Rotation Safety on page 2-16 foradditional information.

Safety LatchHinge Pin

Safety LatchPin Hole in Base

Base

Safety Pin in Lockrod "Lock" Position

SafetyLatch

Remove Safety Pin from Lockrod "Lock"position, press Safety Latch and move to "Unlock" position, then place Safety Pin in thishole for "Unlock" position.

Press here to releaseSafety Latch afterSafety Pin is removed

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Figure 4-8. Hydraulic Control Panel (HCP)

Directional ControlValves

Adjustable FlowControl Valves

HydraulicSupply Hydraulic

Return

HydraulicRegulator

Hydraulic PressureGauge

Hose BundleConnection

Hose BundleStorage

LOCKING BARLOCK

UNLOCK OPEN

DOORCLOSE

ANTIROTATION BARLOCK

UNLOCK

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Figure 4-9. Door Control Panel Mounting Detail

Figure 4-10. 22 PosLock Door Connection (Surface Application)

Floor Stand

Mounting Point to Stand

PanelRear View

Swing Door Open1/4 Male QD

Lock Door3/8 Male QD

Unlock Door3/8 Female QD

Swing Door Close1/4 Female QD

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Figure 4-11. 22 PosLock Door Connection (Subsea Application)

Figure 4-12. 14 UltraLock II (B) Door Connection (Surface and Subsea Applications)

QD Nipple 1/4 x 3/8 (x4)(mates to hose bundle)

QD Nipple 1/4" x 3/8" (x6)(Mates to hose bundle)