SECTION 4 Manhole Covers & Accessories Sheet Ref. CSCONTENTS
F0512, F0337, F0338, F0355, F0339 Emco Wheaton Manhole Cover Safety Features Detailed on this page are some of the important safety features that are exceptional or unique to all Emco Wheaton s manhole covers. We have manufactured manhole covers for petroleum tankers for over 50 years and these features have evolved through our experience and consultation with international oil companies, nearly all of who use the Emco Wheaton manhole cover. Emergency Venting at a massive 7000m³/hr via the pressure actuated fill cap safeguards against tank explosion in the event of a fire. All bolt holes are blind i.e. they do not break through to the underside of the manhole cover. This is to ensure that no liquid cargo can leak through. Webs cast on underside of the base plate and fill cap increases the structural integrity. Recessed centre bolt ensures that emergency venting via the spring loaded fill cap is effective even if the tanker has rolled upside down. Many competitive designs do not include this which means that the tanker could explode if on fire and overturned. Four visible, corrosion proof, plated spring emergency venting. The springs are not shrouded in a rubber sleeve, which was the cause of a major failure on another manufacturer s manhole cover due to rainwater ingress that could not dry out and consequently corroded the single spring. The corrosion was not evident, as the spring was not visible. The Health & Safety Commission identified this as a cause of failure in an official report. The fill cap includes a water drainage lip to prevent either rain or wash water dripping into the compartment and contaminating the product when the lid is opened for loading etc. 2 stage opening protects the operator against dangerous kick-back that can be experienced due to build up of residual pressure. Raised seal face prevents water dripping into tank compartment. 2 High Flow Pressure and Vacuum Vent Valve allows for a massive 7000 ft³/hr (198 m³/hr) of exhaust, and 3500 cubic feet of vacuum, ensuring that the tanker has adequate breathing in extreme climatic conditions. This vent is also designed to seal off to prevent product loss and consequent environmental damage in the event of a tanker overturning. A shield protects the P V vent from damage by loading arm drop pipe. The fill opening is 10 (254mm) diameter to allow easy insertion of the loading arm drop pipe. Sheet Ref. CSMANHOLESAFETY
Manhole Cover Orientation ORIENTATION OF All Emco Wheaton manhole covers, except the F339 oval manhole cover, can be supplied as left-hand or right-hand configuration. This enables ancillary items, such as HLCO, dip tube or mechanical top operator, to be positioned on the tanker centre line. If the ancillary ports are to the left of the fillcap, the manhole cover is designated as left-hand. If the ancillary ports are to the right of the fillcap, the manhole cover is designated as right-hand. The hinge pin should always face the front of the tanker to ensure that the manhole cover falls shut in the event of a tanker driving away with the manlid open. This will ensure that the manhole cover will close to the first latch position. Sheet Ref. CSMANHOLEORIENTATION
F0337 & F0338 16 Manhole Cover Internationally accepted, and specified, by oil companies around the world to assist with the safe conveyance of petroleum-based products, the Emco Wheaton range of manhole covers offers unrivalled safety features and operational benefits. Pressure and vacuum vent fitted as standard for tank breathing. Various ratings are available to suit operational requirements. Two vents may be fitted if required. Spring-loaded fill cap provides emergency fire engulfment venting to NTTC DOT 406, required in the event of the tank being exposed to a fire. Emergency venting capacity 7000m 3 /h air at 350mb. Automatic sealing of the P/V vent in a roll over situation prevents dangerous and costly spillage. Steel cover arm exceeds the requirements of the Australian DROP test (AS 2809-2-1990). Aluminium cover arm is also available on some variants. Self-aligning seal ensures pressure tight operation at all times. Two-stage opening allows safe release of residual compartment pressure before fully opening fill cap. Secure 24-bolt fixing. 250mm (10 ) fill hole for easy drop pipe insertion when top loading. Lightweight aluminium baseplate for increased payloads. High quality die cast baseplate and fillcap, to international standards, are used for durability and performance. Low profile design minimises roll over protection requirements. Lockable options use a standard F0053 key. Two accessory ports for either dip-tube mandrel, over-spill prevention probe or an additional P/V vent. VARIANTS: F0337 Left Hand F0338 Right Hand TYPE / WEIGHT: Steel Cover Arm 9.2 kg Aluminium Cover Arm 8.4 kg APPROVALS: Steel cover arm exceeds Australian DROP test (AS 2809-2-1990) Emergency fire engulfment venting to NTTC DOT 406 When specifying F0338 Manhole Covers for your vehicle, the following points should be considered: Ensure 16" manhole covers are suitable for the orifice in the tank top, i.e. a 16" (410mm) diameter hole. Which P/V vent rating and arrangement is required? Which material of cover arm is required; plated steel or cast aluminium? Remember to specify the F0053001 Manhole Cover Key if you have specified a lockable variant. Do you require left or right hand (this refers to the orientation of the accessory ports)? Sheet Ref. CSF0337/8
F0339 Oval Manhole Cover (440mm x 384mm) Internationally accepted, and specified, by oil companies around the world to assist with the safe conveyance of petroleum based products, the Emco Wheaton range of lightweight aluminium manhole covers offers unrivalled safety features and operation benefits. Pressure and vacuum vent fitted as standard for tank breathing. Various ratings are available to suit operational requirements. Spring-loaded fill cap provides emergency fire engulfment venting to NTTC DOT 406, required in the event of the tank being exposed to a fire. Emergency venting capacity 7000m 3 /h, air at 350mb. Automatic sealing of the P/V vent in a roll over situation prevents dangerous and costly spillage. Steel cover arm exceeds the requirements of the Australian DROP tests (AS 2809-2-1990). Aluminium cover arm is also available on some variants. Self-aligning seal ensures pressure tight operation at all times. Two-stage opening allows safe release of residual compartment pressure before fully opening the fill cap. Secure tamperproof internal eyebolt and lug fixing. 250mm (10 ) fill hole for easy drop pipe insertion when top loading. Oval baseplate is advantageous if limited space is available for the manhole cover. Lightweight aluminium baseplate for increased payloads. High quality die cast baseplate and component materials, to international standards, are used for durability and performance. Low profile design minimises roll over protection requirements. Security facility for padlock, wire or plastic seal. Plated Steel Cross-Arm variant is shown for reference only TYPE / WEIGHT: Steel Cover Arm 8.9 kg Aluminium Cover Arm 8.1 kg APPROVALS: Steel cover arm exceeds Australian DROP test (AS 2809-2-1990) Emergency fire engulfment venting to NTTC DOT 406 When specifying F0339 Manhole Covers for your vehicle, the following points should be considered: Ensure 440mm x 384mm (16" x 14") manhole covers are suitable for the orifice in the tank top. Which type of locking is required; removable key or fixed key? Which P/V vent rating and arrangement is required? Which material of cover arm is required; plated steel or cast aluminium? Remember to specify the F0053 Manhole Cover Key if you have specified a lockable variant. Sheet Ref. CSF0339
F0355 16 Manhole Cover Internationally accepted, and specified, by oil companies around the world to assist with the safe conveyance of petroleum based products, the Emco Wheaton range of lightweight aluminium manhole covers offers unrivalled safety features and operational benefits. Pressure and vacuum vent fitted as standard for tank breathing. Various ratings are available to suit operational requirements. Spring-loaded fill cap provides emergency fire engulfment venting to NTTC DOT 406, required in the event of the tank being exposed to a fire. Emergency venting capacity 7000m 3 /h, air at 350mb. Automatic sealing of the P/V vent in a roll over situation prevents dangerous and costly spillage. Steel cover arm exceeds the requirements of the Australian DROP tests (AS 2809-2-1990). Aluminium cover arm is also available on some variants. Self-aligning seal ensures pressure tight operation at all times. Two-stage opening allows safe release of residual compartment pressure before fully opening fill cap. Secure 12 and 24 bolt fixing variants available. 250mm (10 ) fill cap for safe, trouble free top loading. Lightweight aluminium baseplate for increased payloads. High quality die cast baseplate and component materials, to international standards, are used for durability and performance. Low profile design minimises roll over protection requirements. Security facility for padlock, wire or plastic seal. Accessory ports for both the Emco Wheaton F0592 threaded compartment vent valve and over-spill prevention probe. Baseplate can be supplied with accessory holes for tankers that are to be converted to BLVR later. Plated steel cover arm variant is shown for reference only TYPE / WEIGHT: Steel Cover Arm 8.6 kg Aluminium Cover Arm 7.8 kg APPROVALS: Steel cover arm exceeds Australian DROP test (AS 2809-2-1990) Emergency fire engulfment venting to NTTC DOT 406 When specifying F0355 Manhole Covers for your vehicle, the following points should be considered: Which P/V vent rating and arrangement is required? Remember to specify the F0053 Manhole Cover Key if you have specified a lockable variant. Consider whether left hand or right hand orientation is required. Sheet Ref. CSF0355
F0512-500 series 20 Manhole Cover Pressed Aluminium Base-plate Internationally accepted, and specified, by oil companies around the world to assist with the safe conveyance of petroleum-based products, the Emco Wheaton range of manhole covers offers unrivalled safety features and operational benefits. This variant includes a pressed aluminium base-plate in conformance with ADR 2007 requirements. Pressure and vacuum vent fitted as standard for tank breathing. Various ratings available to suit operational requirements. Two vents may be fitted if required. Spring-loaded fill cap provides emergency fire engulfment venting to NTTC DOT 406, required in the event of the tank being exposed to a fire. Emergency venting capacity 7000m 3 /h air at 350mb. Automatic sealing of the P/V vent in a roll over situation prevents dangerous and costly spillage. 20 base-plate for access compliance with ADR. 250mm/10 fill hole for easy drop pipe insertion when top loading. Self-aligning seal ensures pressure tight operation at all times. Two-stage opening allows safe release of residual compartment pressure before fully opening fill cap. Lockable available with key lock Secure 24-bolt fixing as required by ADR. Lightweight pressed aluminium base-plate material complies with EN13094 design & construction of metallic tanks. Low profile design minimises roll over protection rail/valance requirements. Security facility for padlock, wire or plastic seal. Left hand, as shown - right hand variant available. Accessory ports, 1 x TW flange for vapour transfer vent (F0592), 2 x 4 hole flanges for additional P/V vent, dip tube, emergency unload adaptor or electronic HL sensor. Anti-leak blind bolt holes for TW accessory flange assists tank manufacturer with hydro test. Sealing washers are not required with blind holes. WEIGHT: 11.5kg COMPLIANCE/APPROVALS: AS 2809-2-1990 Australian DROP test) Emergency fire engulfment venting to NTTC DOT 406 EN13114/EN13317:2002 EN13094 ATEX - EN13463-1:2001 When specifying F0512 Manhole Covers for your vehicle, the following points should be considered: Specify the F0053 Key for lockable variant F0512 it is supplied separately. The Emco Wheaton F0592 high flow flanged vapour transfer vent valve fits to this Manhole Cover. Sheet Ref. CSF0512500 September 2007 - Revision 0
F0512-542 & 543 20 Manhole Cover Pressed Aluminium Base-plate Internationally accepted, and specified, by oil companies around the world to assist with the safe conveyance of petroleum-based products, the Emco Wheaton range of manhole covers offers unrivalled safety features and operational benefits. This particular variant includes a pressed aluminium base-plate in conformance with ADR 2007 requirements. Pressure and vacuum vent fitted as standard for tank breathing. Various ratings available to suit operational requirements. Two vents may be fitted if required. Spring-loaded fill cap provides emergency fire engulfment venting to NTTC DOT 406, required in the event of the tank being exposed to a fire. Emergency venting capacity 7000m 3 /h air at 350mb. Automatic sealing of the P/V vent in a roll over situation prevents dangerous and costly spillage. 20 base-plate for access compliance with ADR. 250mm/10 fill hole for easy drop pipe insertion when top loading. Self-aligning seal ensures pressure tight operation at all times. Two-stage opening allows safe release of residual compartment pressure before fully opening fill cap. Lockable available with key lock F0512543 or without F0512542. Secure 24-bolt fixing as required by ADR. Lightweight pressed aluminium base-plate material complies with EN13094 design & construction of metallic tanks. Low profile design minimises roll over protection rail/valance requirements. Security facility for padlock, wire or plastic seal. Left hand, as shown - right hand variant available. Accessory ports, 2 x TW flanges for vapour transfer vent (F0592), pneumatic high level sensor & 1 x 4 hole flange for additional P/V vent, dip tube or electronic HL sensor. Anti-leak blind bolt holes for TW accessory flanges assists tank manufacturer with hydro test. Sealing washers are not required with blind holes. WEIGHT: 11.5kg COMPLIANCE/APPROVALS: AS 2809-2-1990 Australian DROP test) Emergency fire engulfment venting to NTTC DOT 406 EN13114/EN13317:2002 EN13094 ATEX - EN13463-1:2001 When specifying F0512 Manhole Covers for your vehicle, the following points should be considered: Specify the F0053 Key for lockable variant F0512543 it is supplied separately. The Emco Wheaton F0592 high flow flanged vapour transfer vent valve fits to this Manhole Cover. Sheet Ref. CSF0512542-3 April 2007 - Revision 0
F0512 20 Manhole Cover Internationally accepted, and specified, by oil companies around the world to assist with the safe conveyance of petroleum-based products, the Emco Wheaton range of manhole covers offers unrivalled safety features and operational benefits. Pressure and vacuum vent fitted as standard for tank breathing. Various ratings are available to suit operational requirements. Two vents may be fitted if required. Spring-loaded fill cap provides emergency fire engulfment venting to NTTC DOT 406, required in the event of the tank being exposed to a fire. Emergency venting capacity 7000m 3 /h air at 350mb. Automatic sealing of the P/V vent in a roll over situation prevents dangerous and costly spillage. Cover arm available in aluminium or steel. Steel cover arm exceeds the requirements of the Australian DROP tests (AS 2809-2-1990). 20 baseplate for ease of access. 250mm (10 ) fill hole for easy drop pipe insertion when top loading. Self-aligning seal ensures pressure tight operation at all times. Two-stage opening allows safe release of residual compartment pressure before fully opening fill cap. Secure 24-bolt fixing. Lightweight aluminium baseplate for increased payloads. Low profile design minimises roll over protection requirements. Security facility for padlock, wire or plastic seal. Left hand and right hand variants available. Accessory ports for high flow compartment vent (F0592), over-spill prevention probe and additional P/V vent. Aluminium cover arm TYPE / WEIGHT: Steel Cover Arm 12.2 kg Aluminium Cover Arm 11.4 kg APPROVALS: Steel cover arm exceeds Australian DROP test (AS 2809-2-1990) Emergency fire engulfment venting to NTTC DOT 406 CEN Steel cover arm When specifying 20 Manhole Covers for your vehicle, the following points should be considered: What type of locking is required; removable key or fixed key? Which P/V vent rating and arrangement is required? Remember to specify the F0053 Manhole Cover Key if you have specified a lockable variant. Consider whether left hand or right hand orientation is required. This refers to the orientation of the accessory ports. The Emco Wheaton F0592 Flanged Vapour Vent Valve fits to this Manhole Cover. Sheet Ref. CSF0512
F0053 Manhole Cover Key The Emco Wheaton F0053 Manhole Cover Key is used in conjunction with all Emco Wheaton lockable, removable key, manhole covers. This removable key is designed to ensure security of the manhole covers on the tank to make certain that pilferage of the product is not possible. Hot brass forging gives good quality finish along with good durability. Hole for securing key to manhole cover by chain if required. Removable key can be locked inside tool cabinet or vehicle to ensure security of manhole covers. One key fits all of the Emco Wheaton lockable manhole covers. Key should be ordered separately from manhole cover, as they are not supplied automatically. WEIGHT: 0.055 kg When specifying the Manhole Cover Key for your vehicle, the following points should be considered: Do you have the Emco Wheaton lockable - removable key type Manhole Covers suitable for this key? How many keys do you require per vehicle? Sheet Ref. CSF0053
Various Pressure and Vacuum Vent Valves Incorporated in all standard Emco Wheaton manhole covers, and available separately with rain cap, the 2 High Flow Pressure and Vacuum Vent Valve provides breathing for petroleum product tankers. Aerodynamic porting facilitates extremely high throughput. Pressure: Air flow at 21 kpa = 198200 litres per hour (7000 cubic feet per hour). Vacuum: Air flow at 7 kpa = 99100 lph (3500 cubic feet per hour). Mandatory roll over seal off, as required by the U.K. Health and Safety Executive, is included. This feature has proven its effectiveness many times in tanker rollover accidents where it has protected lives, prevented dangerous and costly spillage and prevented pollution. High flow through wind tunnel tested aerodynamic porting. Seal off device prevents product spillage in tanker rollover accidents. Exceeds the requirement of petroleum spirit conveyance by road regulations. Viton seals are standard for compatibility with high-octane fuels. Tough acetal polymer construction for durability. Flame retardant stainless steel gauze covers the inlet/outlet ports. Weight: 0.49 kg Available with various pressure and vacuum settings (viton seal version listed): Part No. Pressure Vacuum 00609097 20mbs (2kPa) 4.5mbs (0.45kPa) 00607271 70mbs (7kPa) 4.5mbs (0.45kPa) 00612337 70mbs (7kPa) 20mbs (2kPa) 00619233 100mbs (10kPa) 20mbs (2kPa) 00609187 120mbs (12kPa) 4.5mbs (0.45kPa) 00616274 120mbs (12kPa) 20mbs (2kPa) Available with Rain Cap (viton seal version listed): 00615879 20mbs (2kPa) 4.5mbs (0.45kPa) 00615767 70mbs (7kPa) 4.5mbs (0.45kPa) 00619439 70mbs (7kPa) 20mbs (2kPa) 00616244 120mbs (12kPa) 20mbs (2kPa) Available with solvent compatible seals: 00618451 20mbs (2kPa) 4.5mbs (0.45kPa) 00618452 70mbs (7kPa) 4.5mbs (0.45kPa) 00618453 70mbs (7kPa) 20mbs (2kPa) 00618454 120mbs (12kPa) 4.5mbs (0.45kPa) P/V Vent with rain cap for fitting either in the manhole cover base plate or on the tanker shell. Other variations or combinations of the above are available. Sheet Ref. CSPVVENT
F00940 16 Bolted Manhole Cover Neck Ring Specifically designed for the Emco Wheaton range of 16" Manhole Covers, for easy fabrication onto the tank shell. High quality steel or aluminium fabrication, to international standards, used for durability and performance. 12 or 24 bolt fixing. 4mm wall thickness - steel. 6mm wall thickness aluminium. Welding gas holes included in design. WEIGHT: Steel Aluminium 3.97 kg 2.04 kg VARIANTS: F0094-001 16 Steel 4mm thick 24 holes F0094-002 16 Aluminium 6mm thick 24 holes F0094-011 16 Steel 4mm thick 12 holes F0094-012 16 Aluminium 6mm thick 12 holes When specifying the 16" manhole cover neck ring for your vehicle, the following points should be considered: Check that the neck ring material suits the tank material. Sheet Ref. CSF00940
F00941 20 Bolted Manhole Cover Neck Ring Specifically designed for the Emco Wheaton range of 20" Manhole Covers, for easy fabrication onto the tank shell. High quality steel or aluminium fabrication, to international standards, used for durability and performance. 24 bolt fixing. 4mm wall thickness - steel. 6mm wall thickness aluminium. Welding gas holes included in design. WEIGHT: Steel Aluminium 4.90 kg 2.52 kg VARIANTS: F0094-101 20 Steel 4mm thick 24 holes F0094-102 20 Aluminium 6mm thick 24 holes When specifying the 20" manhole cover neck ring for your vehicle, the following points should be considered: Check that the neck ring material suits the tank material. Sheet Ref. CSF00941
F0272, F0288, F0292, F0293 Dip Guide Tubes and Dip Mandrels The physical method of dipping/measuring a tank compartment s contents by inserting a stick is facilitated by use of these well-established products. A mandrel with vented quick release cap is used for quick access. A full length, gauzed aluminium, extruded tube is included with F0293 dip tube assemblies, assisting accurate measuring of product. Lightweight aluminium construction. Durability is provided by the use of 2.25mm gauge tube to British Standard 1474 HE9M. Safety provision includes a vented cap to reduce any trapped pressure and prevent liquid spray. Conductive gaskets are supplied with F0292 and F0293 for controlling static electricity. Facility for datum stamping is provided. Complies with Trading Standards Authorities requirements. Limited damage replacement costs with two piece F0292 and F0293 - top (datum) mandrel is separated. Facility for extruded tee section sticks. Minimal inventory required due to standard length of tube assembly that is cut to suit when fitting (other lengths are available). Easy installation - fits into standard Emco Wheaton manhole cover accessory ports. Security interlock facility on F0292 and F0293. MANHOLE ACCESSORIES TYPE / WEIGHT: F0272-001 1.00 kg F0288-002 1.00 kg F0292-003 1.13 kg F0293-001 5.73 kg APPROVALS: Complies with Trading Standards Authorities requirements When specifying Dip Guide Tubes and Dip Mandrels for your vehicle, the following points should be considered: Number of compartments to be fitted with Dip Guide Tubes and Dip Mandrels. Which type of Dip Guide Tubes and Dip Mandrel are required? Is there sufficient space on your Emco Wheaton Manhole cover to mount the Dip Guide Tubes and Dip Mandrels? Length of tube required when specifying the F0293 Dip Tube assembly. Sheet Ref. CSF0293
F0903 Dip Interlock Assembly Where added security is required, or where local regulations stipulate that a dip reading cannot be taken until the compartment emergency valve is open, this valve locks the dip aperture until a sequenced air signal is received from the emergency valve. Simple installation - fits between flanges of F0292 and F0293 Dip Tube Mandrels. Pneumatic operation. Simple single acting design. Lightweight aluminium construction. Viton seals fitted as standard for compatibility with high-octane fuels and additives. Robust design incorporating heavy-duty stainless steel pin. Easy to maintain. MANHOLE ACCESSORIES WEIGHT: 0.73 kg APPROVALS: Trading standards dept. NWML When specifying Dip Interlock Assemblies for your vehicle, the following points should be considered: Is a sequenced air signal available from the Emergency Valve? How many Dip Interlocks are required for your vehicle? Conductive gaskets (00611759) must be used when fitting. Sheet Ref. CSF0903
F0256 5 Emergency Vent The Emco Wheaton F0256 5" Emergency Vent is specifically designed to provide vast pressure relief in the event of a fire. The simple, easy to maintain design of this vent makes it ideal for oil companies and transporters of petroleum products who require a tough and reliable emergency vent when it has not already been provided within a manhole cover.* * All Emco Wheaton manhole covers have integral emergency venting. High quality cast aluminium body and component materials, to international standards, are used for durability and performance. Lightweight aluminium construction for increased payloads. Vent automatically opens at 210mb (3psig) internal tank pressure. MANHOLE ACCESSORIES WEIGHT: 2.15Kg When specifying 5" Emergency Vents for your vehicle, the following points should be considered: Remember to specify the F0093 Vent Mounting Ring. Sheet Ref. CSF0256