Suction tanks

LPCB offers certification of suction tanks to : ?LPS 1276 Requirements for suction tanks for automatic pumps. ?LPS 1254 Requirements for suction tanks for automatic pumps. (Section 13.2)   The use of LPS 1254 has been replaced by LPS 1276 for new installations in the UK and Ireland. The use of LPS 1254 in other territories should be confirmed with the relelvant Insurance or Regulatory bodies. The two standards will co-exist pending ongoing review, any changes to this position will be updated on the www.redbooklive.com website. Approval Conditions are set out in each section and take precedence over any material contained in other documentation for the purposes of LPCB recognition.

 

LPS 1276

1)  In accordance with the requirements of EN 12845, the following definitions are derived:

 

  

2) Each single-supply or multi-level take-off tank supplied under this approval scheme must not exceed a maximum capacity of 1300m3. Duplicate sub-divided tanks may have a total capacity not exceeding 2600m3, provided the dividing wall is structurally capable of supporting either compartment full whilst the other is empty, and the maximum capacity of each compartment does not exceed 1300m3.

3) It may be necessary for a current Regulations Advisory Scheme, WRAS (formerly WrC), certificate to be held by the manufacturer, specific to each tank listed.

4) Galvanised “Superior” steel tanks shall have the tank shell protected by:

(a) a coating weight of at least 610g/m2 each side, with such tank entries marked ‘g’,

or

(b) an equivalent corrosion protection system which has been specifically approved and listed by the LPCB, with such tank entries marked ‘e’.

 

5) The purchaser shall specify the required tank designation “Superior” or “Single” in accordance with the LPC Rules for Automatic Sprinkler Installations, together with the tank reference number.

6) The tank must bear a plate stating:

(i) The name and address of the manufacturer.

(ii) The date of installation.

(iii) The LPCB Reference Number, including the type suffix (“Superior” or “Single”) which has been

specified by the purchaser and agreed by the manufacturer.

(iv) The maximum capacity in cubic metres. Multi-supply tanks must indicate the capacity for the automatic sprinkler system separately.

Tanks which do not bear such a plate are not approved.

7) Specifiers of LPCB approved sprinkler suction tanks are advised to ensure that where a vortex inhibitor is used in accordance with the LPC Sprinkler Rules, that the vortex inhibitor used is listed in Part 3 Section 14 of the Red Book as LPCB approved.

8) Where “Superior” tank shell exteriors are not protected by 610g/m2 or equivalent, appropriate inspection, service and maintenance shall be specified. Exterior shell protection of 300g/m2 galvanising is set as the minimum acceptable level of exterior protection combined with specified inspection service and maintenance.

9) Immersion heaters used to prevent the ball valve and water in the vicinity from freezing shall be dual element type.

LPS 1254

1)   The BS 5306 LPC Rules for  Automatic Sprinkler Installations identifies the following types of pump suction tanks:

Note: This specification is withdrawn for all contracts delivered after 1st April 2009.

  • Type A        Not dependent on inflow, fed from a potable water supply, and suitable for sprinkler service without emptying, cleaning, maintenance or repair for a period of not less than 15 years.
  • Type B        Not dependent on inflow.
  • Type C        Dependent on inflow.
  • Type D        Dependent on inflow, fed from a potable water supply, and suitable for sprinkler service without emptying, cleaning, maintenance or repair for a period of not less than 15 years.

The type of tank approved or certificated is indicated by capital the letter A. B, C or D at the end of the LPCB Reference number in the product listing.

2) Each single-supply or multi-level take-off tank supplied under this approval scheme must not exceed a maximum capacity of 1300m3. Duplicate sub-divided tanks may have a total capacity not exceeding 2600m3, provided the dividing wall is structurally capable of supporting either compartment full whilst the other is empty, and the maximum capacity of each compartment does not exceed 1300m3

3) Continuation of approval is conditional upon a current Regulations Advisory Scheme, WRAS certificate (formerly WrC) being held by the manufacturer, specific to each tank listed.

4) 1,2 Galvanised steel tanks Type A and D shall have the tank shell protected by:

(a) a coating weight of at least 610g/m2 each side, with such tank entries marked ‘g’,

or

(b) an equivalent corrosion protection system which has been specifically approved and listed by the LPCB, with such tank entries marked ‘e’.

5) 1 Galvanised steel tanks Types B and C shall have the tank shell protected by a coating weight of at least 300g/m2 each side, or an equivalent corrosion protection system, approved and listed by the LPCB.

6) The purchaser shall specify the required tank designation A, B, C or D in accordance with the LPC Rules for Automatic Sprinkler Installations, together with the tank reference number.

7) The tank must bear a plate stating:

(i) The name and address of the manufacturer.

(ii) The date of installation.

(iii) The LPCB Reference Number, including the type suffix (A,B,C or D) which has been specified by the purchaser and agreed by the manufacturer.

(iv) The maximum capacity in cubic metres. Multi-supply tanks must indicate the capacity for the automatic sprinkler system separately.

Tanks which do not bear such a plate are not approved.

8) Specifiers of LPCB approved sprinkler suction tanks are advised to ensure that where a vortex inhibitor is used in accordance with the LPC Sprinkler Rules, that the vortex inhibitor used is listed in Part 3 Section 14 of the Red Book as LPCB approved.

Note 1. Corrosion protection systems specified should be regarded as minimum levels and additional protection may be warranted in special circumstances to achieve a design life of at least 15 years (Types A & D) or 6 years (Types B & C).

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