Groth 8331 - Manual (Page 3)

3
GENERAL SAFETY INSTRUCTIONS
This section is an overview of safety guidelines that should be followed during the installation, operation and maintenance of Groth
Condensate Accumulator. To understand the context of these instructions and warnings, it is necessary to completely read and
understand the contents of this manual.
The purpose of a Condensate Accumulator is to remove condensate without allowing process gas to escape. The tank must be
designed for the proper MAWP of the system. Consult API Standard 2000 for tank protection sizing procedures. An improperly
specified or functioning accumulator may result in structural damage to the tank or system, and can cause severe personal injury or
death.
SAFETY WARNINGS
DO NOT ATTEMPT TO REMOVE THE CONDENSATE ACCUMULATOR FROM THE TANK OR PROCESS VESSEL WITHOUT
FIRST BLEEDING ALL PRESSURE FROM THE SYSTEM. ALTERNATIVE MEANS OF PRESSURE RELIEF MUST BE PROVIDED
WHEN THE ACCUMULATOR IS OUT OF SERVICE.
THE ACCUMULATOR HAS BEEN EXPOSED TO PROCESS VAPORS WHILE IN SERVICE. OBSERVE ALL PLANT
PROCEDURES AND MATERIAL SAFETY DATA SHEETS (MSDS) FOR THE PRODUCTS IN THE SYSTEM WHEN INSPECTING,
ADJUSTING OR SERVICING THE VALVE. TAKE APPROPRIATE SAFETY PRECAUTIONS REGARDING EYE PROTECTION,
RESPIRATION AND SKIN CONTACT.
INSPECTION AND INSTALLATION
The Model 8331 must be installed in the upright position, preferably as near the digester as practical but must be at the lowest point of
the digester gas piping. When flange mounting, use suitable gaskets and tighten bolts uniformly. When threaded connections are
supplied, use a suitable lubricant/sealant. Note "In" and "Out" connections for proper flow direction. The elevation of the Condensate
Accumulator must be sufficient to permit installation of drip trap and/or condensate drain piping and access to the 2" NPT clean-out
port.
If a Model 8180 sight level gauge is provided, the glass will be packaged separately. Remove the packing nuts from the two valves
[11,12] and insert the glass tube [8]. Replace the nuts and packing and tighten carefully to prevent damage to the glass tube.
If a Groth Model 8450, 8460, 8470, or 8490 Drip Trap is provided, it must be connected to the condensate outlet (1" NPT connection on
the side of the housing) using 1" pipe. See drip trap instructions for correct installation procedure. If no drip trap is used, the
condensate outlet should be piped to a drain using 1" pipe and suitable valve to prevent gas escaping.
CAUTION!
Do not overtighten threaded connection. Damage or breakage may result.
Refer to assembly drawing C-94965 (or similar drawing) for parts list and dimensional information.
All valves should be installed using the three body lifting lugs. Mount the valve with the pallet assembly in the horizontal plane.
1. Begin by inspecting the gasket; make sure that the material is suitable for the service. Gasket dimensions are listed in Table 2
below:
2. Lubricate all studs and nuts with an appropriate thread lubricant. If stainless steel fasteners are used, select an anti-seize lubricant
such as moly-disulfide.
3. Align the gasket with the bolt circle.
4. Set the unit carefully on the flange, keep the gasket between the flanges. Install the studs and tighten nuts hand tight.
5. Torque all fasteners to half the recommended value (see Table 3) in a staggered, alternating pattern or follow appropriate Plant
Maintenance guidelines and standards.
*Note: Torque values are based on a gasket factor m=3.5,
gasket factor y=2000 psi, maximum pressure = 2 psi.
6. Make sure that the flanges are not distorted and that the gasket is evenly compressed.
7. Make up the final torque and check that no further nut rotation occurs.
PREVENTIVE MAINTENANCE
The Model 8331 Condensate Accumulator does not require routine lubrication or adjustments, but should be checked periodically, at
least twice a year or per the on-site maintenance schedule.